Bizhub C451/550/650 - KONICA MINOLTAservice.bcn.konicaminolta.cn/inc/openFile.jsp?url...Bizhub...

bizhubC650 /550/451 (for BT distributors)

Issued by BT-CSO 1

Ver. 2

Bizhub C451/550/650 Troubleshooting Guide

2008/02/22

Ver.2.0

OP Support Department 2 Office Printing Support Division

CS Operations Konica Minolta Business Technologies, Inc.


Ver. 2 2

Bizhub C650/550/451 Troubleshooting Index

Index

Green : Revised items.

Red: Added items. 1. Trace of Exit Roll, Rib (Uneven luster in feeding direction) ........................................3 2. Image becomes rough....................................................................................................4 3. Wood graining image .....................................................................................................5 4. Leading edge dirt............................................................................................................6 5. Trailing edge dirt.............................................................................................................7 6. Foggy background .........................................................................................................8 7. Carrier adhesion .............................................................................................................9 8. Waving Image................................................................................................................ 10 9. Uneven density ............................................................................................................. 11 10. Toner is sprinkled (Fringe)......................................................................................... 12 11. Blurred image at leading edge................................................................................... 14 12. Uneven density in an oblique direction .................................................................... 15 13. Low Image Density ..................................................................................................... 16 14. Manual Double-sided Image Transfer Failure........................................................... 18 15. Lines in the CD............................................................................................................ 19 16. Paper Wrinkle.............................................................................................................. 20 17. Brush Effect ................................................................................................................ 21 18. Color Shift ................................................................................................................... 22 18 - 2. Color Shift (With Error Codes: P-14, P-21, P-22 etc.).......................................... 25 19. Exiting Failure (C550 Main-body Paper Exit)............................................................ 27 20. TC Empty Detection Error (C2551, C2553, C2555) ................................................... 28 21. P-21 (Stabilization failure) .......................................................................................... 29 22. Clack Noise from Fusing Unit (about 0.5 seconds cycle) ....................................... 30 23. TC failure (C2552, C2554, C2556) .............................................................................. 32 24. Error Code C-3102 (Fusing Roller Rotation Failure) ................................................ 33 25. C-8103 (Lift-up Mechanism Failure) .......................................................................... 34 25-2. C-8103 (lift up mechanism trouble) / Paper JAM occurs often (J6602) ............... 35 25-3. C-8103 (lift up mechanism trouble) / Abnormal noise occurs ............................. 36 26. C-8104 (glass movement failure)............................................................................... 37 27. Error Code regarding Fusing Unit (C-3921, C-3924, C-3925, C-3824, C-3825 etc).39 28. LCC Paper miss-feed Jam problem in Tray 3, 4 ....................................................... 41 29. ICP list on C550/C451/C650........................................................................................ 43 30. Jam in bypass feeding ............................................................................................... 46 31. FAX board Error (C-B003) .......................................................................................... 48 32. Upgrade Procedure to function enhancement version FW..................................... 50 33. Abnormal odor and noise from Fusing Unit ............................................................. 56 34. Noise from paper feed section (Tray1/Tray2) when feeding.................................... 58 35. Sticky paper when using OT-503 (Only C650) .......................................................... 59 36. Waved Image (C650) ................................................................................................... 60 37. The machine does not start up.................................................................................. 61 38. JAM in Tray 3............................................................................................................... 62 39. Improvement of color IU standard yield achievement............................................. 64 40. Image failure after starting up the machine first in the morning ............................ 66

Issued by BT-CSO


Ver. 2 3

1. Trace of Exit Roll, Rib (Uneven luster in feeding direction) [Symptom] Trace of exit roll: A difference appears in a luster in a part with the roll and a part without the roll. Trace of ribs: Vertical line and unevenness occur in first side of two-sided of a thick paper. [Occurrence Paper] Trace of roll: OHP, Glossy paper Trace of ribs: Thick paper (first side when duplex printing) [Presumed Cause] <Trace of roll> -A difference appears in a luster in a part with the roll and a part without the roll because heat is taken by the paper exit roller. - WAX in a toner composition adheres to the roll face and the opposite roller, and it occurs. <Trace of ribs> - A paper is pressed against ribs between the fusing unit and paper exit. [Action] <Trace of roll> -Fusing temperature is lowered. [Service Mode] [Machine1] [Fusing Temperature] Heater Roller -20° to -5° *Notice: By lowering fusing temperature, fixation falls and image separates easily. <Trace of ribs> - Fusing transport speed is lowered. [Service Mode] [Machine1] [Fusing Transport Speed] -10 to -6 steps Reference: 1step: 0.15％ Back to Index

Issued by BT-CSO


Issued by BT-CSO 4

Ver. 2

2. Image becomes rough [Symptom] Copy image becomes rough in text/photo mode (No problem in photo mode, Remarkable in a low concentration part) [Presumed Cause] One beam breaks down among two beams of PH. (Image processing takes error diffusion in text/photo mode. It is not highly visible because of screen in photo mode.) <How to check> [Service Mode] [Machine] [LD Adjustment] [LD lightness balance adjust] [For adjust] Test Printing Normal state of PH :The density of adjacent grids are the same. (e.g. The density of A and B is the same.)

A

Either A or B is low density or there is no print in abnormal state.

B

Back to Index

[Basic Action] - LD lightness balance readjustment * Please refer to the service manual about an adjustment of LD lightness balance. - Replace PH


Issued by BT-CSO 5

Ver. 2

3. Wood graining image [Symptom] Slight symptom of “2 Image becomes rough” [Presumed Cause] The way to adhesion of toner changes in beam differences (Mosel has two beams) of PH. <How to check> [Service] [Machine] [LD Adjustment] [LD lightness balance adjust] [For Adjust] Test Printing Normal state of PH :The density of adjacent grids are the same. (e.g. The density of A and B is the same.)

BA

Either A or B is low density or there is no print in abnormal state.

[Basic Action] - LD lightness balance readjustment * Please refer to the service manual about an adjustment of LD lightness balance. - Replace PH Back to Index


Ver. 2 6

4. Leading edge dirt [Symptom] (A) Trace of leading edge of the ribs (B) Both edge of an image of paper is dirty [Presumed Cause] (A) Leading edge of the paper contacts separation claws and the guide because the size of curl of the paper is too large. (B) The conveyance guide is dirty. （Toner / Smoke） (B) Separation of thin paper is bad, and since the transfer voltage becomes high when printing in color, it becomes difficult to separate the paper from the transfer belt, and the leading edge of the paper contacts the separation claw. (C) The part which is in contact with the belt of the transfer cleaning unit is dirty. [Basic Action] (A, B commonness) - Guide/2nd transfer separation claw - Adjust Transfer output timing <Procedure> [Service Mode] [Imaging Process Adjustment] [Paper Separation Position Adjustment] Adjust + side (C) - Replace Transfer Unit (Replace Cleaner) Remarks: Please adjust the amount of the edge part of erase if the edge part of solid image becomes blurred a little by adjustment. Back to Index

Issued by BT-CSO


Ver. 2 7

5. Trailing edge dirt [Symptom] (A) The trailing edge of the image becomes dirt (B) Back side of paper becomes dirt [Presumed Cause] (A) The rear edge of paper has bounded after passing roller NIP, and contacts the transfer belt and the guide etc. (B) Neutralizing cloth dirt in the 2nd transfer unit [Basic Action] (A) Speed up fusing speed <How to adjust> [Service Mode] [Machine] [Fusing Transport Speed] Shift + side (B) - Clean neutralizing cloth - Replace 2nd transfer roller Assy Back to Index

Issued by BT-CSO


Ver. 2 8

6. Foggy background [Symptom] - Image becomes dirty slightly. - It becomes dirty by remains after wiping. [Presumed Cause] - They are remains after transfer cleaner wipes [Basic Action] (A) Change Cleaning Bias <Procedure> [Service Mode] [Imaging Process Adjustment] [Transfer Belt]

[Cleaning Bias] Plus output value (collect) Adjust in -1 to + 1 (B) 2 transfer Output is lowered. <Procedure> [Service Mode] [Imaging Process Adjustment] [Transfer Output Fine Adjustment]

[2nd Transfer Fine Adjust] -1 to - 2 steps Remarks: -Cleaning Bias １step: 5 µ -Cleaning Bias - - Plus output value (collect) adjust in -1 to + 1 (It is -1 in HH environment and it is +1 in LL environment.） - - Minus output (previous drum charging) Swings only to the + side - 2nd transfer output 1 step: 100V Back to Index

Issued by BT-CSO


Issued by BT-CSO 9

Ver. 2

7. Carrier adhesion [Symptom] - Image is rough. (Carrier adhesion) [Presumed Cause] (A) The connection of harness between PRCB and HV board is not connected firmly. (B) A poor point of contact (e.g. Main-body IU etc.） (C) Charger dirt (blowout failure and it is possible that TC value is high) [Basic Action] (A) Check the connection of harness (B) Check dirt on IU connecter and contact part (C) - Clean Charger - Check TC value (Aim7% in design) [Service Mode] [State Confirmation] [Level History 1] * Need to be checked when TCR values are not 7% of aims [Service Mode] [Imaging Process Adjustment] [TCR Level Setting] Reference: 1 step: 0.5%

Confirm that this valueis design value.

Design value: 7.0％

Back to Index


Issued by BT-CSO 10

Ver. 2

8. Waving Image [Symptom] A waving image occurs <OK> <NG>

Faulty image likewaving line

[Presumed Cause] The timing error of Flip Flop inside ASIC occurs by the internal electrical power source change in ASIC (PIC3400G). [Basic Action] Please carry out Version Up of the FW after Ver.48. (Countermeasure FW is provided only for C550. It had already been provided for C451 and C650) Back to Index


Issued by BT-CSO 11

Ver. 2

9. Uneven density [Symptom] Uneven density appears in solid image. (A pattern can be seen like a rectangle with a deep part and a light part.)

<OK> <NG>

Uneven density

[Presumed Cause] - TC ratio is low. - Poor transfer [Basic Action] (A) Transfer 1st voltage is raised <Procedure> [Service Mode] [Imaging Process Adjustment] [Transfer Output Fine Adjustment]

[1 Transfer Fine Adjust] +1 to 2 steps Reference: 1 step: 100V (B) (TC is raised) *notice: If papers do not pass for a while, TC value will not change. Action (B) should be used when TC value is abnormal. <Procedure> [Service Mode] [Imaging Process Adjustment] [TCR Level Setting] It is made for TC to become 7% (design value). Reference: 1 step: 0.5% Back to Index


Issued by BT-CSO 12

Ver. 2

10. Toner is sprinkled (Fringe) [Symptom] (A) Toner is sprinkled in front of an image <Fringe> (B) Toner is sprinkled around an image <Burst>

Paper feeding direction

<Fringe> Toner is sprrinkled in feeding direction

Ｔoner is sprinkled around an image<Burst>

[Presumed Cause] (A) Charge neutralizing level is not enough. And static electricity is generated because paper is rubbed firmly by the guide of plate. As the result of the static electricity, the toner is sprinkled in the Feeding Direction. (B) Resistance becomes high because of type of paper, and 2 transfer current falls. Since the adsorption power between toner and paper fell, we presume that toner spreads easily. The guide of

the plate

Static electricity


Issued by BT-CSO 13

Ver. 2

[Basic Action] (A) - Clean neutralizing cloth and Replace 2nd transfer roller Assy - Please attach the following part on the guide of the plate. Part name: Guide Sheet Part number: A00H7034** (B) If 2nd transfer current value is raised, it will improve. <Procedure> [Service Mode] [Imaging Process Adjustment]

[Transfer Output Fine Adjustment] [2 Transfer Fine Adjust] +１to 2 steps Reference: 1 step: 100V Back to Index

The guide of plate

The guide sheet

The guide sheet

　

Guide sheet

Do not float the guide sheet.

Do not out of the guide of plate.


Issued by BT-CSO 14

Ver. 2

11. Blurred image at leading edge [Symptom] The poor transfer which the image is blurred at leading edge part. (It often appears in 2nd side of paper)

<OK> <NG>

Leading ege of paper Leading ege of papaer

[Presumed Cause] (A) Transfer output beginning is late. (B) Poor printer area adjustment [Basic Action] (A) Adjust Transfer output beginning <Procedure> [Service Mode] [Imaging Process Adjustment] [Paper Separation Adjustment] Adjust - side (B) Change Printer area <Procedure> [Service Mode] [Machine1] [Printer Area] [Print Positioning: Leading Edge] Adjust + side (B) Change an amount of Printer Erase <Procedure> [Service Mode] [Machine1] [Lead Edge Erase Adjustment] Chose an amount of Erase Remarks: When [Paper Separation Adjustment] is adjusted to - side by the Basic Action of (A), if trace of the separation claw of the transfer unit is generated in the margin of leading edge of paper, please carry out both of changing the amount of Printer Erase (4mm 5 mm or 6mm) of Basic Action (A) and (B). Back to Index


Ver. 2 15

12. Uneven density in an oblique direction [Symptom] Uneven density occurs about 40 degrees of slant. It will often see in following adjustment <Service Mode> <test pattern> <halftone> Black (1PC), 128 graduation [Presumed Cause] It appears in pitch period of magnesium roller in the developing unit. Deficiency of supply of the toner to a developing roller [Basic Action] It resolves and reduces in the short-run. Back to Index

Issued by BT-CSO


Ver. 2 16

13. Low Image Density [Symptom] By the pattern on which blue color is lapped over, transfer is bad and image density is low. (There are image lightness and image unevenness.) [Presumed Cause] (A) The 2nd transfer voltage is low. (B) Effect of the usage paper (The paper currently used in Japan has trend for electrical resistance to be high, and it is disadvantageous for transfer.) [Basic Action] The 2nd transfer voltage is increased. (The reference adjustment value of each paper is indicated to the following page.) <Procedure> [Service Mode] [Imaging Process Adjustment] [Transfer Output Fine Adjustment] [2 Transfer Fine Adjust] + 1 to 2 steps (It changes a little with papers to be used.) Reference: 1 step: 100V *Notice: If +6 steps are adjusted uniformly, there is risk that 2nd transfer voltage will become overmuch depending on the paper to be used, and an image failure, such as an image memory, will occur, please do not carry out that adjustment. *Notice: If 2nd transfer voltage is lower than the proper value, 10. Toner is sprinkled may also be generated in addition to low image density. (B) (Change papers)

Issued by BT-CSO


Issued by BT-CSO 17

Ver. 2

Secondary transfer adj .

Plain paper Thick 1First side Second side First side Second side

NRW90 -1 0 CC３２ｌB 0 0Tidal MP -1 0 CC100 -1 0CC90 0 0Original 0 0

Thick 1+ Thick 2First side Second side First side Second side

NS700 -1 -1 CC160 -0 -0CC200 +2 +2

Thick 3 Thick 4１面目２面目 First side Second side

CC250 0 0 CC300 0 0

<default>

Japan： Others：First side Second side

Plain paper +2 +1 All 0Thick 1 -2 -1Thick 1+ -1 -1Thick 2 -3 -2Thick 3 -3 -2Thick 4 0 0

Environmental dependence

・HH　：　-1・LL　： +1～+2

Back to Index


Ver. 2 18

14. Manual Double-sided Image Transfer Failure [Symptom] Image density is low when using manual double-sided [Presumed Cause] The electrical resistance of the reverse side of paper becomes high and back of paper has trend for transfer to be bad. *Since papers resistance are high and papers immediately after printing have bad transfer, please avoid it immediately. [Basic Action] The 2nd transfer voltage is increased. <Procedure> [Service Mode] [Imaging Process Adjustment] [Imaging Process Adjustment] [Transfer Output Fine Adjustment] +1 to 2 steps Reference: 1 step: 100V Remarks: Manual double-sided is a specification of only bypass. Back to Index

Issued by BT-CSO


Ver. 2 19

15. Lines in the CD [Symptom] (A) In thick papers of A4S, Lines in the Crosswise Direction at 30mm from the leading edge (B) In thick papers of A4S, Lines in the Crosswise Direction at 105mm from the leading edge (C) In A3, Lines in the Crosswise Direction at 125mm from the trailing edge (E) 0.5ｍｍ periodic unevenness (F) 3ｍｍ periodic unevenness [Presumed Cause] (A) Image failure occurs because of a shock when trailing edge of paper is passing through the timing roller. (B) Image failure occurs because of a shock when trailing edge of paper is passing through the 2nd transfer roller. (C) Image failure occurs because of a shock when papers get into the fusing unit. (D) Polygon revolution cycle of PH (F) 2nd transfer cycle [Basic Action] (A, B) Chose Image Quality in Thick Paper Mode of Service Mode <Procedure> [Service Mode] [Machine1] [Thick Paper Mode] [Image Quality] (C) There is no improvement action (E) Replace PH unit (F) Replace the transfer Unit and the 2nd transfer unit Back to Index

Issued by BT-CSO


Ver. 2 20

16. Paper Wrinkle [Symptom] - Wrinkles are generated. [Presumed Cause] (A) When using Humidity paper, since leading edge of paper becomes meandering, adjustment of paper for the fusing roller irruption cannot be performed in the guide before fusing. (The guide before fusing is usually center concave or center convex and leading edge of paper is lightly adjusted by putting into leading edge of paper in the guide before a rotation.) (B) - Paper is not parallel to the fusing roller by paper skew. - Fusing Unit is installed in incline.

- There is much gap between paper and the regulation plate in Tray. (C) - Wrinkles occur because paper skew is large before 2nd transfer. [Basic Action] (A) - Changing papers (hard papers or papers that right after unpacking) - Papers set upside-down

- The guide is cleaned before fusing (B) - Check whether regulation of paper setting is right or not. - Re-installation of Fusing Unit (C) - The side regulation plate in Tray is fixed with a screw

* Please be careful not to make a gap bigger between paper and the plate by shifting the plate. - How to adjust the amount of loop

(1) <Procedure before changing paper taken-up Unit> [Service Mode] [Machine1] [Printer Resist Loop]: Adjust to - side (2) <Procedure after changing paper taken-up Unit (Pressure is up between take-up rollers) > [Service Mode] [Machine1] [Printer Resist Loop]: Adjust to + side Please adjust it on the each mode (System speed) Remark1: the amount of printer resist loop

+: Increase loop - : decrease loop

- Replace Paper take-up Unit (Please refer to PMN: KOM070927) * PMN: In KOM070927, conveyance power of the rollers is increased. PMN: In KOM072325,

the shape of the guide has been changed in order to increase the take-up capability of thick paper.

- Change paper to Tray 2 from Tray 1. Back to Index

Issued by BT-CSO


Ver. 2 21

17. Brush Effect [Symptom] - Brushing image is generated in the paper lower half central part in feeding direction. [Presumed Cause] - Fusing R Speed is fast [Basic Action] Adjust Fusing Speed <Procedure> [Service Mode] [Machine1] [Fusing Transport Speed] Decrease Fusing Speed. Back to Index

Issued by BT-CSO


Issued by BT-CSO 22

Ver. 2

18. Color Shift <<Plain paper/Thick paper>> *TNI No: TNBT0700092JP01 abstract from TNI [Symptom] Color shift in sub scan direction <Procedure to adjust color registration> 1. Select “Machine Adjust” > ”Color Registration Adjustment” (fig.1) 2. Set A3 Paper on manual bypass tray. 3. Select paper type. 4. Print Color registration adjustment char. (fig.2) 5. Check color shift in lead edge position.(Area1: About 50mm range) 6. Select the color which is shifted to Bk and adjust with ”+/-“ key. 7. Print Color registration adjustment char again then check color shift in Area1. 8. Repeat the procedure 6&7 until color registration becomes good level. 9. Then Check color shift in trail edge position.(Area2: About 50mm range) 10. Select “Machine Adjust” > ”Color Alignment Adjustment” (fig.3) 11. Adjust the value according to following instruction. 12. Print Color registration adjustment char again then check color shift in Area2. 13. Repeat the procedure 11&12 until color registration becomes good level. <The factors which cause color shift and can be adjusted in service mode> 1. The error in auto color shift correction system due to different condition between auto correction and paper feeding. (Symptom) Color shift occurs for each color evenly in page. (Adjustment parameter) Adjust LD drive timing to match the registration. 2. Uneven drive of transfer belt due to the stress from the paper which caused

Paper feedingdirection

Lead edge Trail edge

Paper

by the different transport speed between the paper and the belt. (Symptom) Color shift occurs unevenly in page. Amount of shift is different between lead edge and trail edge and all colors are in same trend. (djustment parameter) Adjust rotation speed of register roller to make the paper feeding speed equal to the belt rotation speed.


Lead edge Trail edge


Issued by BT-CSO 23

<Procedure to adjust color registration> 1. Select “Machine Adjust” > ”Color Registration Adjustment” (fig.1) 2. Set A3 Paper on manual bypass tray. 3. Select paper type. 4. Print Color registration adjustment char. (fig.2) 5. Check color shift in lead edge position.(Area1: About 50mm range) 6. Select the color which is shifted to Bk and adjust with ”+/-“ key.

1

2

7. Print Color registration adjustment char again then check color shift in Area1. 8. Repeat the procedure 6&7 until color registration becomes good level. 9. Then Check color shift in trail edge position. (Area2:About 50mm range) 10. Select “Machine Adjust” > ”Color Alignment Adjustment” (fig.3) 11. Adjust the value according to following instruction.

In case C is laid ahead of Bk.

Adjust the color registration of Xdirection to "+".(Shift by 1/3 line -> Adjust 1dot)

In case C is laid behind Bk.

Adjust the color registration of Xdirection to "-".(Shift by 1/3 line -> Adjust 1dot)

<In case C is shifted to Bk.>

In case all Y,M,C in trail edge arelaid ahead of Bk

Adjust the color alignment to "-".

In case all Y,M,C in trail edge arelaid behind Bk

Adjust the color alignment to "+".

12. Print Color registration adjustment char again then check color shift in Area2. 13. Repeat the procedure 11&12 until color registration becomes good level.

Fig.1 Color Registration Adjustment screen

Fig.2 Color registration adjustment chart


Fig.3 Color Alignment Adjustment screen

Ver. 2


Ver. 2 24

<<Thick paper>> *TAD No: TABT0700193JP01 abstract from TAD [Symptom] Color shift may occur when a thick paper is set and fed to the 2nd tray. [Cause] In order to adjust usually skew of leading edge of paper in timing roller, vertical conveyance roller located in the upper part of the timing roller is set the paper carrier speed faster than the timing roller. But when the conditions which are thick paper and feeding from 2nd paper tray are met, the paper conveyance power of paper feeding vertical conveyance section is increased, paper is tend to push 2nd transfer. As a result, color shift occurs [Action] Please upgrade FW to Version 48 or later When only feeding thick paper from 2nd paper tray, vertical conveyance roller speed in the paper feed section becomes the same speed of timing roller, and since pushing in 2nd transfer of paper is lost, effect of color shift is decreasing. Back to Index

Issued by BT-CSO


Issued by BT-CSO 25

Ver. 2

18 - 2. Color Shift (With Error Codes: P-14, P-21, P-22 etc.) [Symptom 1]

Error Code P-22 related to color shift was indicated when setting up, and a sample of the color shift was shifted 1 mm against Bk.

Each color was shifted against Bk. As a result, Error code of P-22 occurred.

[Cause] PC axis of Bk-IU might have been shifted from specification greatly because of the impact by a falling and dropping of IU enclosed by the main body. Although a repair part of IU has the packing form that has considered transportation as a unit, we assume that the transportation examination is in the status where the main body enclosed IU. Please be careful not to fall and drop IU even if it is enclosed state of packing although we believe that the treatment with the IU unit has already been careful enough.

[Action] Replace Bk-IU Back to Index


Issued by BT-CSO 26

Ver. 2

[Symptom 2] Color shift occurs in direction of the PC drum axis. <Occurrence condition>

- Version of ＦＷ is 6B (Expansion Function 2） - Sleep mode [ON]

Leading edge of paper

The amount of each color shift comes to increase against Bk.

[Cause] The software bug of the main-frame control

[Action] Please upgrade FW to ver.6M or later. * Sleep mode [OFF] as temporary Action.

Back to Index


Ver. 2 27

19. Exiting Failure (C550 Main-body Paper Exit) [Symptom] The papers exited to the exit tray are pushed out with the paper to which papers were exited later. [Presumed Cause] - Curling of paper is large. [Basic Action] - Set papers upside-down. Back to Index

Issued by BT-CSO


Ver. 2 28

20. TC Empty Detection Error (C2551, C2553, C2555) [Symptom] In practice that Empty code is not detected without toner. [Presumed Cause] Toner adheres to Piezo element and it is judged that toner is left, even though there is no toner left in fact. [Basic Action] ・Clean the part of element (cotton-tipped swab etc.) Back to Index

Issued by BT-CSO


Ver. 2 29

21. P-21 (Stabilization failure) [Symptom] P call (P-21) occurs [Presumed Cause] (A) IDC sensor reading failure (B) IDC sensor shutter performance failure (C) IDC sensor dirt (D) Remains after wiping with cleaner (E) PH beginning position failure (skew adjustment failure) [Basic Action] Check whether the IDC sensor position leans or not. Replace IDC sensor folder unit Check whether the transfer unit is installed properly or not. (Check whether there is any backlash) 。 Replace Transfer unit (B) Check whether the performance of the sensor shutter is smooth or not. (Check whether the shutter is not being curved) (C) Clean IDC sensor (D) Change Cleaning Bias <Procedure> [Service Mode] [Imaging Process Adjustment] [Transfer Belt] [Cleaning Bias] Plus output value (collect) Adjust in -1 to + 1 (It is -1 in HH environment and it is +1 in LL environment.) (E) Replace PH Back to Index

Issued by BT-CSO


Ver. 2 30

22. Clack Noise from Fusing Unit (about 0.5 seconds cycle) [Symptom] There is the clack noise from upside of right door of the paper exit. (about 0.5 seconds cycle) [Presumed Cause] It occurs in the fusing roller rotation detection part. The sound of gears caused of the backlash which comes from a gear of the rotation detection cam of Fusing Unit, and a gear in front of that gear. The speed of the gear by the side of the cam is changed by unevenness of the cam, and Clack noise occurs in backlash of gears. (Based on the change of load) [Basic Action] Install the countermeasure part in the field TAD No: TABT0700218EN00 (Refer to the following page)

Issued by BT-CSO


Issued by BT-CSO 31

Ver. 2

Installation Manual (the countermeasure part of noise from fusing unit)

OK

NG

Insertion point

buffer material parts

buffer material parts(red part)

cam gear

The buffer material must be betweenmetal A and the cam gear

metal A(yellow part)

countermeasure part

＝NG＝There is a gap between the buffer material and the cam gear.

=OK=The buffer material collapsesand it sticks to the cam gear.

Ⅰ, Remove the fusing unit from the machine.Ⅱ, Peel off the coated paper of the double-faced tape on the countermeasure part.Ⅲ, Insert the countermeasure part so that the buffer material parts come between metal A and the cam gear of the fusing unit.　　＜Point＞　　　・Crush the buffer material of the countermeasure part with the cam gear, then insert the countermeasure part.Ⅳ. Fix the countermeasure part with the double-faced tape.Ⅴ. Confirm the cam gear doesn't move in axis direction. Push and put the part

Confirm the cam gear doesn't move axially.

Ⅰ Ⅱ、Ⅲ Ⅳ、Ⅴ

Ⅲ

Details

KMBT　CONFIDENTIAL

2007.3.27KONICAMINOLTA

BUSINESS TECHOLOGIES,INC.

countermeasure part

Back to Index


Ver. 2 32

23. TC failure (C2552, C2554, C2556) [Symptom] C2552, C2554, and C2556 occur [Presumed Cause] Toner leaks from the sub hopper. (It will leak, if toner convertibility is very high) As a result, when the state that TC ratio exceeded 12% (design value is 7%) continues for 30 seconds, C call occurs. [Basic Action] About ten solid images are printed by the color (Y/M/C) out of which C call has come immediately after the power switch is on. <TC check procedure> [Service Mode] [Machine] [Level History 1] Check the TC value Design value 7% Back to Index

Issued by BT-CSO


Issued by BT-CSO 33

Ver. 2

24. Error Code C-3102 (Fusing Roller Rotation Failure) [Symptom] C-3102 (Fusing roller rotation failure) is indicated [Presumed Cause] When installing Fusing Unit to Main-body of the machine, if fit gear tip of main-body side is hit that of Fusing Unit side each other, Fusing Unit will stop short of a proper installation position. There is a possibility that the following problem occurs when Fusing Unit fixing screws are fastened in the state. [Basic Action] Install the fusing unit to proper position Notice: For Unit generated once, please modify so that L bending part of the screw fastening part of Fusing Unit becomes right-angled. *Installation procedure of the fusing unit 1. Set Fusing Unit to main-body of the machine. (Do not fasten screws yet) 2. Push Fusing Unit rotating JAM Processing Dial. 3. Fasten the fixing screws of Fusing Unit in order from the rear side of the machine to the front side.

A side

B side

JAM Processing Dial(Rotate the dial to the arrow directionto push the fusing unit)

<OK>It is flat between A side andB side

＜OK＞ Pushing direction

＜NG＞

A side

B side

　　　　　＜NG＞It is uneven betweenA side and B side

Back to Index


Ver. 2 34

25. C-8103 (Lift-up Mechanism Failure) [Symptom] C-8103 may be indicated by opening and closing DF [Presumed Cause] (A) DF is being opened in 90 degrees or more, when the power turns off on. Paper tray (movable part) comes into a floating state. (Note 1) This is the problem which it does not return to lower position in the initial work just after the power switch is on. This is generated when Lift-up lower position sensor turns off. Note 1: Although it originally goes down downward by its own weight, if 90 degrees or more FD opens, the loading to the bottom may not be applied but it may come floating. (B) When DF is opened in standby, since 90 degrees or more FD was opened, paper feed tray comes into a floating state, and when original empty sensor turns on and off by the impact or shake, etc., this is the problem which it does not return to lower position although paper tray is dropped. This is generated when Lift-up lower position sensor turns off and empty sensor turns on/off. [Basic Action] (A, B) Set a stopper to the regular position of the stopper in the hinge section. (Defect will not be generated if it is set in regular position.) Back to Index

Issued by BT-CSO


Issued by BT-CSO 35

Ver. 2

25-2. C-8103 (lift up mechanism trouble) / Paper JAM occurs often (J6602) TNI: TNBT0700166 [Symptom] When numbers of original is about one to five, the original lifting plate descends and then original JAM (J6602) may occur frequently. [Presumed Cause] <<A>> Margin of distance in the original lifting plate is not enough.

Margin of distance of the original lifting plate to the position in which Lift-up higher position sensor (PS16) is surely activated may be unable to be secured because of the parts and assembly fluctuation of Original lifting plate lift-up mechanism component.

<<B>> The mounting mistake of Paper feed cover. (At the time of maintenance in the field)

If Paper feed cover has been fixed in the state which the backside of paper feed cover floated (The state where the space was made between paper feed cover salient and the original feed tray reentrant) when installing, PS16 becomes higher than true position and may be unable to activate.

[Basic Action]

Paper feed cover Gap NG

<<A, B>> Check whether Paper feed cover is fixed by true position. If Paper feed cover is fixed and floated, screw is fastened pushing the cover in order to not make a space between the paper feed cover salient and the original feed tray reentrant. If Paper feed cover is on true position, Spacer A and B (thickness: 1 mm) are affixed on the

original lifting plate so that the original lifting plate may rise up to a required quantity.

Back to Index

部品B部品

Spacer A Spacer B

Ｓｅｔｔｏｔｈｅｅｄｇｅｏｆｒｉｂ

Ｓｅｔｔｏｔｈｅｅｄｇｅ

ｏｆｒｉｂＳｅｔｔｏｔｈｅ

ｅｄｇｅｏｆｒｉｂ

No gap


Issued by BT-CSO 36

Ver. 2

25-3. C-8103 (lift up mechanism trouble) / Abnormal noise occurs TABT0700548JP** [Symptom]

When many originals are put on DF original lifting plate and load is large to lift up mechanism of original lifting plate, the trouble code “C-8103 / Noise” may occur.

[Presumed Cause] The worm gear cogs are out of alignment. A backlash of the part fixing the motor becomes large because of the variation of the part fixing the motor. The backlash makes distance between the worm gear installed on the motor and the next cog larger, which causes skip of the cogs to occur.

[Action] Backlash of the motor is taken away by sticking a spacer on the motor mounting plate.

Back to Index

Motor

Backlash

Mounting Plate

Cogs are out of alignment

Rib

Standard

Standard

Spacer is wedged in Rib

Mounting plate (lift up)

Spacer


Issued by BT-CSO 37

Ver. 2

26. C-8104 (glass movement failure) <Symptom> C-8104 occurs <Presumed Cause>

(A) DF original glass moving in IR unit does not move properly. A part of the dustproof seal used for DF original glass moving unit turned over, as it is possible to contact with surrounding parts. The sliding load of the glass movement up if a part of the dustproof seal contact with surrounding parts, and C-8104 is displayed. (Please refer to the TAD No: TABT0700179EN00)

(B) When JAM occurs in DF, if paper remained in the scanning 1st reverse section, when Jam is able to be canceled by operations of turning the power off and on or removing another jammed paper and raising paper tray, since the scanning 1st reverse section does not have paper detection sensor, it does not detect remaining paper. For this reason, although the machine will start normally, the glass moves by the initial operation, since trailing edge of the remaining original got stuck into the clearance between the scooping guide and the scanning glass, the glass was not able to return to home position.

Edge of scanning glass

Trailing edge of original jammed

Trailing edge of original jammed is caughtin the edge of scanning glass and the movement of scanning glass is prevented.

<Basic Action> (A) Cleaning the area, where the dustproof seal turned over contact ,with alcohol. And fix the edge cover on the dustproof seal.


Issued by BT-CSO 38

Ver. 2

＜Position＞

fixed place

＜Procedure＞

＜Ⅰ＞＜Ⅱ＞Insert the edge of cover to the concavity area, Fix the edge cover so that it cover ruggednessand fix edge cover along the sheet.

＜Detail＞

countermeasure part

A00J2890

reference：under 1mm

Do not out of theedge of A00J2883

A00J2881

A00J2883

Do not run aground in the edge of A00J2883.

base of fix　edge of glass

＝wrong＝Do not run aground in the glass.

Insert the edge of countermeasure part.

Insert the edge of countermeasure part to the concavity area, and fix countermeasure part along the sheet metal.

paste side of seal

glass

glass

the dustproof seal

no ruggedness

base of fixedge of A00J2890

(B) Get rid of remains paper. Back to Index


Ver. 2 39

27. Error Code regarding Fusing Unit (C-3921, C-3924, C-3925, C-3824, C-3825 etc) [Symptom] The following error code related to Fusing Unit is displayed. 1, When main/sub switch is turned on,

C-3921 Fusing sensor wire breaks detection. (Center of the heating roller) C-3924 Fusing sensor wire breaks detection. (soaking side) C-3925 Fusing sensor wire breaks detection. (NC sensor)

2, After the trouble reset for above trouble code or while machine is working.

C-3824 Fusing abnormally low temperature detection (soaking side) C-3825 Fusing abnormally low temperature detection (NC sensor)

3, When new unit is installed

The machine does not recognize the new unit. [Presumed Cause]

There is a possibility that the drawer connector is not connected firmly in the fusing unit.

[Basic Action] Please refer to following page. -->If it doesn't recover. Please confirm the connection of PRCB. -->If it doesn't recover. Please replace the Fusing unit.

<Notice>

Due to safety reasons, disassemble of the fusing unit is prohibited. Do not remove any other parts, except the parts mentioned in this instruction. Be careful to operate the connector so as not to give the damage to the harness.

Issued by BT-CSO


Issued by BT-CSO 40

Ver. 2

Confirmation of connection

<Procedure>１，Remove the Fusing unit from the machine. ２，Remove the front side cover of the Fusing unit. ３，Suppress by the finger and confirm whether there is half-lock of the connector. ＊Caution）Be careful to operate the connector so as not to give the damage to the harness.４，Put the front cover on the unit, and install it in the main body.

＜detail＞2, Remove the three screws , and remove the front cover.

３, Suppress by the finger and confirm whether there is half-lock of the connector.

front cover

screw

screw

screw

Drawer-ConnectorPlease confirm whether a blue and white connectorare surely inserted in the socket.

KMBT　CONFIDENTIAL

2007/5/7KONICAMINOLTA

BUSINESS TECHNOLOGIES,INCCS Operations

Due to safety reasons, disassemble of the Fusing unit is prohibited.

= Caution =

Do not remove any other parts, except the parts mentioned in th is instruction.

Back to Index


Issued by BT-CSO 41

Ver. 2

28. LCC Paper miss-feed Jam problem in Tray 3, 4 [Symptom] Paper Jam occurs by the paper-feeding mistake in 3rd and 4th tray. (LCC) [Presumed Cause]

(A) Regulation of paper has not been performed according to backlash of paper edge guide being large. Or, there is no backlash oppositely, the paper-feeding resistance increases according to regulation being tight, and it becomes a paper-feeding mistake. (B) Last paper Jam occurs (miss-feed) because adhesion of Packing tape remains to the bottom. (C) Paper-feeding pressure is insufficient by Type of paper (e. g. Curling thick paper etc.), and it becomes a paper-feeding mistake.

[Basic Action]

(A) Adjust the paper edge guide (B) Remove remains of packing tape and then clean it with alcohol (C) Add Plate in Paper take-up Assy and adjust pressure of paper take-up (TAD No: TABT0700075EN00)

Auxiliary Part: Parts name: Plate Parts No.: A00JP001-00A

Notice: Please note to use the longer screw when some parts are added. When adding one piece: no change (V116030803 (M3*8mm)) When adding two piece: V116030803 (M3*8mm) * 2 V116031003 (M3*10m) * 2 <Position of Additional parts> Paper take-up Assy


Issued by BT-CSO 42

Ver. 2

DetailsWhen adding one piece

Initial condition

When adding two piece A00JP001 is added（A red part is additional parts.)

Change the screw.V116030803(M3×8mm) -> V116031003(M3×10)

A00JP001 is added (A red part isadditional parts)

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Issued by BT-CSO 43

Ver. 2

29. ICP list on C550/C451/C650 [Reference material - Cause clarification] In order to enhance the safety of the product, ICP is implemented in C550/C451/C650. ICP is element which protects IC, wire, and coil(winding wire). It works as fuse. If current to board, motor or the other device exceeds rated value, ICP is blown to protect IC. Below table is ICP list showing related device and different symptom when each ICP gets open. If you face the below symptom, please check if the corresponding ICP is open or not. （TNI: TNBT0700108EN00） < Paper feed transport drive board>

ICP No. Rate Symbol Device Symptom Trouble Code

ICP1 5A M25 Transport motor Tray 3/4 feeder transportation motor failsto turn. C-0104

ICP2 2A M6 Tray 1 lift-up motor Abnormal Tray 1 feeder up/down C-0202M8 Tray 2 lift-up motor Abnormal Tray 2 feeder up/down C-0204

ICP3 2A M23 Tray 3 lift-up motor Abnormal Tray 3 feeder up/down C-0206M24 Tray 4 lift-up motor Abnormal Tray 4 feeder up/down C-0208

ICP4 2.5A M4 Exit motor Paper Jam at exit sectionICP5 2.5A M22 Take-up motor Paper Jam at 1st/2nd paper feedingICP6 2.5A M2 Transfer belt motor Paper Jam at vertical transport sectionICP7 2.5A M5 Tray 1 vertical transport motor Paper Jam at vertical transport sectionICP8 2.5A M7 Tray 2 vertical transport motor Paper Jam at vertical transport sectionICP9 2.5A M27 Bypass paper feed motor Paper Jam at bypass feed sectionICP10 2.5A M33 Switchback Motor Paper Jam at bypass duplex sectionICP11 2.5A M31 ADU transport motor/1 Paper Jam at bypass duplex sectionICP12 2.5A M32 ADU transport motor/2 Paper Jam at bypass duplex sectionICP13 2.5A M26 Vertical transport motor Paper Jam at vertical transport sectionICP14 2A PS4 Tray 1 vertical transport Paper Jam at 1st paper feeding section

PS5 Tray 1 paper feed sensor Paper Jam at 1st paper feeding sectionPS12 Tray 2 vertical transport Paper Jam at 2nd paper feeding sectionPS13 Tray 2 paper feed sensor Paper Jam at 2nd paper feeding section

PS28 Intermediate Transport rollersensor

Paper Jam at 3rd/4th paper feedingsection

PS3 Paper feed sensor of LU Paper Jam at LUICP15 2A CL1 Tray 1 paper feed clutch Paper Jam at 1st paper feeding section

CL2 Tray 2 paper feed clutch Paper Jam at 2nd paper feeding sectionICP16 2A CL3 Horizontal transport clutch 1 Paper Jam at 3rd/4th paper feeding

CL4 Horizontal transport clutch 2 Paper Jam at 3rd/4th paper feedingCL6 Tray 3 transport clutch Paper Jam at 3rd/4th paper feeding

ICP17 2A CL5 Tray 3 paper feed clutch Paper Jam at 3rd paper feeding sectionCL7 Tray 4 paper feed clutch Paper Jam at 4th paper feeding section

ICP18 2A M28 Bypass tray up down motor Abnormal Manual feed up/down C-0211SD Gate switch solenoid Paper Jam at exit section

ICP Info. Related device Symptom when the ICP is blown.


Issued by BT-CSO 44

Ver. 2

< Printer control board>

ICP No. Rate Symbol Device Symptom Trouble CodeICP1 2A FM10 IH cooling fan motor/1 IH cooling fan motor/1 fails to turn. C-5304

FM11 IH cooling fan motor/2 IH cooling fan motor/2 fails to turn. C-5305FM12 IH cooling fan motor/3 IH cooling fan motor/3 fails to turn. C-5306

ICP2 2A F3 Fusing unit fuse Not possible to detect new fusing unit.ICP3 2A FM2 Fusing cooling fan motor/1 Fusing cooling fan motor/1 fails to turn. C-3303

FM6 Ozone ventilation fan motor Ozone ventilation fan motor fails to turn. C-5354ICP4 2.5A REDB PWB-RL（relay board） Dehumidity heater keeps on.

FM3 Cooling fan motor Cooling fan motor fails to turn. C-5356FM7 Color toner suction fan motor Color toner suction fan motor fails to turn. C-2352FM8 Bk toner suction fan motor Bk toner suction fan motor fails to turn. C-2351FM13 Paper cooling fan motor Paper cooling fan motor faols to turn. C-0351

ICP5 2A M3 Transfer rollerengagement/retraction motor Transfer roller fails to engage/retract. C-2151

FM1 Suction fan motor Suction fan motor fails to turn. C-0301FM4 Fusing cooling fan motor/2 Fusing cooling fan motor/2 fails to turn. C-3304FM5 Fusing cooling fan motor/3 Fusing cooling fan motor/3 fails to turn. C-3305

ICP6 2A M9 Toner supply motor/Y C-2555/C-255B

M10 Toner supply motor/M C-2553/C-255A

ICP7 2A M11 Toner supply motor/C C-2551/C-2559

M12 Toner supply motor/K C-2557/C-255CICP8 2A M20 Waste toner box motor Waste toner box motor fails to turn. C-2204

ICP9 2A M21 Transfer beltengagement/retraction motor Transfer belt fails to engage/retract. C-2152

ICP10 2A M13 Toner cartridge motor Y/M Not possible to reset toner empty on Y/M.M14 Toner cartridge motor C/K Not possible to reset toner empty on C/K.

ICP11 2A EL_Y Main erase lamp/YEL_M Main erase lamp/MEL_C Main erase lamp/CEL_K Main erase lamp/K

ICP12 2A FM16 Rear side cooling fan motor Rear side cooling fan motor fails to turn. C-2354ICP14 2A M29 Fusing roller separation motor Fusing roller fails to engage/retract. C-3101

ICP15 2A M15 Charge cleaning motor/K PC charge cleaning trouble (P-16) or PCcharge cleaning malfunction P16 or C-2101

ICP16 4A M30 Fusing motor Fusing motor turns at abnormal timing. C-3201ICP17 5A M16 Color PC drum motor Color PC drum motor fails to turn. C-2253

M17 Color developing motor Color developing motor fails to turn. C-2255ICP18 5A M38 Cleaner motor Cleaner motor fails to turn. C-2257ICP19 5A M18 Bk PC drum motor Bk PC drum motor fails to turn. C-225B

M19 Bk developing motor Bk developing motor fails to turn. C-2259ICP20 5A M1 Transfer belt motor Transfer belt motor fails to turn. C-5104ICP21 1.5A PS45 Bk PC encoder sensor/1 P31 or obvious color shift may occur. P31

PS46 Bk PC encoder sensor/2 P31 or obvious color shift may occur. P31ICP22 1.5A INDEXB PWB-I（Index board） Laser malfunction C-4501

REYB/PH PWB-J（REYB/PH） P14 or obvious color shift may occur. （P14）

ICP23 2A F2 Transfer belt unit fuse Not possible to detect new transfer beltunit.

ICP24 1.5A TEM/HUMS temprature/humidity sensor abnormal value will be displayed in service

mode.ICP25 1.5A PZS_Y Toner empty sensor/Y Not possible to reset toner empty on Y.

PZS_M Toner empty sensor/M Not possible to reset toner empty on M.PZS_C Toner empty sensor/C Not possible to reset toner empty on C.PZS_K Toner empty sensor/K Not possible to reset toner empty on K.

ICP26 2A TCRS_Y TCR sensor_Y C-2556/C-255BTCRS_ TCR sensor_M C-2554/C-255ATCRS_ TCR sensor_C C-2552/C-2559TCRS_ TCR sensor_K C-2558/C-255C

Abnormally high toner density/ TCR sensoradjustment failure is detected on TCRsensor.


Abnormally low toner density/ TCR sensoradjustment failure is detected on Y/M TCRsensor .Abnormally low toner density/ TCR sensoradjustment failure is detected on C/K TCRsensor .

Image memorry with 94mm interval mayoccur.


Issued by BT-CSO 45

Ver. 2

< PH relay board>

ICP No. Rate Symbol Device Symptom Trouble CodeICP1 2A FM14 PH cooling fan motor PH cooling fan locks. C-4301

FM15 IU cooling fan motor IU cooling fan motor fails to turn. C-2353ICP2 2A M34 Polygon motor Polygon motor rotation trouble C-4101ICP3 2A M37 PH skew correction motor_C P14 or obvious color shift may occur. （P14）ICP4 2A M36 PH skew correction motor_M P14 or obvious color shift may occur. （P14）ICP5 2A M35 PH skew correction motor_Y P14 or obvious color shift may occur. （P14）ICP6 2A PCB14 PWB-F（LD drive_Y） Laser malfunction C-4501

PCB15 PWB-F（LD drive_M） Laser malfunction C-4501PCB16 PWB-F（LD drive_C） Laser malfunction C-4501PCB17 PWB-F（LD drive_K） Laser malfunction C-4501


< FAN unit drive board>

ICP No. Rate Symbol Device Symptom Trouble CodeICP1 2A FM101 Exit paper cooling fun motor/1 Exit paper cooling fun motor/1 fails to turn.

FM102 Exit paper cooling fun motor/2 Exit paper cooling fun motor/2 fails to turn.FM103 Exit paper cooling fun motor/3 Exit paper cooling fun motor/3 fails to turn.


< LU drive board>

ICP No. Rate Symbol Device Symptom Trouble CodeICP2 2A M1 LU Lift-up motor Abnormal LCT up/down C-0216ICP3 2A M3 LU transport motor Paper Jam at LUICP4 2A M2 LU paper feed motor Paper Jam at LUICP5 1.5A PS3 LU paper feed sensor Paper Jam at LU


< High voltage unit/1>


IP101 1.5A － 24V-G（Grid）Abnormal image （image stabilizationfailure）

P-6/7/8/9

IP301 1.5A － 24V-C（charging） Abnormal image （black print） P-6/7/8/9

IP501 1.5A －24V-B12（Development biasY/M）

Abnormal image （Starter consumpton） P-7/8

IP601 1.5A －24V-B34（Development biasC/K）

Abnormal image （Starter consumpton） P-6/9


< High voltage unit/2>

ICP No. Rate Symbol Device Symptom Trouble CodeP1 2A － 24V（transfer bias） Abnormal image（white print, ATVC failure） P-27


< DC power supply>


IP701 2A FM9Power supply cooling fanmotor

Power supply cooling fan motor fails toturn. C-5351


Back to Index


Issued by BT-CSO 46

Ver. 2

30. Jam in bypass feeding [Symptom] Jam in bypass [Presumed Cause]

(A) The conveyance resistance between PC sheet (Separation sheet: A00J5871) and paper becomes large, and it cannot stop to a definite period of time (Time's over) which is causes to generate Jam. (B) Leading edge of paper is caught and Jam is generated because Bypass feed conveyance section (Bypass holder: A00J5965) has burrs.

[Basic Action]

(A) Please peel off PC sheet (Separation sheet: A00J5871), and carry out alcoholic cleaning up so that the adhesion of PC sheet does not remain in conveyance path.

Bypass holder: A00J5965 PC sheet (Pink in left figure) (Separation sheet : A00J5871)


Issued by BT-CSO 47

Ver. 2

(B) Get rid of burrs with a cutter and smooth it with sandpaper of #1000. (Be careful not to delete more than needed)

Burrs

Feedingdirection

Especially, condition is bad inburrs

Parts with burrs

Notice: In order to get rid of burrs, move a cutter horizontally to delete burrs in a state that the blade of the cutter is standing.

　　　　 OKThe blade of a cutter is standing

　　　　 NGThe blade of a cutter is not standing

The direction wherea cutter is moved

The direction wherea cutter is moved

Back to Index


Issued by BT-CSO 48

Ver. 2

31. FAX board Error (C-B003) [Symptom] FAX board error (C-B003 etc.) is indicated after installing FK-502 [Presumed Cause] Connection between FAX board and PCI relay board is bad. [Basic Action] Notice: Please be sure to do the following work that FAX Board is fixed to the main body.

1. Remove two covers which are upper rear side of the machine and 2nd FAXsection.

2. Remove the cover of 2nd FAX on the rear side of the sheild BOX

Exterior of upper rear side cover

Exterior cover of 2nd FAX section

2nd FAX cover


Issued by BT-CSO 49

Ver. 2

3. FAX board is being connected.(1) Tighten three screws as left figure.(2) Bring the screws to the left side and tighten the screws. Check whether the connection is enough to tight looking from the opening of 2nd FAX(3) If the connection is not enough, PCI relay board is directly brought to the left side to use the opening of 2nd FAX and fasten screws.

*** Notice ***- Be careful about steel plate edge to not get injured.- Be careful about working to not damage the substrate.

Tightenthree screws

PCI relay board

FAX board side

4. Reinstall the covers that was removed.

- End

Back to Index


Ver. 2 50

32. Upgrade Procedure to function enhancement version FW When upgrading the firmware of C550/C451 to function enhancement version, be sure to follow the procedure explained in this document.

Note: This procedure is necessary only for upgrading the FW to function enhancement version. For upgrading the FW to Maintenance release version (MR), this procedure is not required.

< Function Enhancement version >

C550: Ver. 58 C451: Ver. 58

< Supported firmware version for upgrading> It is possible to upgrade the firmware to function enhancement version from following version

C550: Ver.25 (initial version), Ver.49 (MR version) C451: Ver.39 (initial version), Ver.49 (MR version)

<Contents> Following procedures are explained in this document.

1. Data conversion up procedure to function enhancement version (see page2) 2. HDD conversion up procedure to support XPS printing (see page3)

Caution: The second procedure is necessary only when the customer is working with Windows Vista environment and intends to print XPS format document.

3. Version down procedure from Function Enhancement version (see page4)

Issued by BT-CSO


Issued by BT-CSO 51

Ver. 2

[Data conversion up procedure to function enhancement version] 1. Download the firmware with using Compact Flash Card. 2. When first time you turn on the MFP after upgrade, C-CC00 is shown on the control panel.

3. Convert the data in accordance with function enhancement.

Convert the data format, select the key as follows. Select Service Mode State Confirmation Memory HDD Adj. Conversion Up

4. Press the start key to start conversion. 5. Message “Please turn the main switch off and on” will be displayed then turn off/on the MFP.


Issued by BT-CSO 52

Ver. 2

[HDD conversion up procedure to support XPS printing] This procedure is necessary only when the customer is working with Windows Vista environment and intends to print XPS format document. With this procedure, the part of HDD, which Emperon is using, will be formatted. Once HDD conversion is done, the font /macro stored in HDD will be lost. Please carry out this procedure according to the customer’s demand. 1. Convert the HDD for supporting XPS printing.

Convert HDD, select the key as follows. Select Service Mode State Confirmation Memory HDD Adj. XPS Enable Format

2. Press the start key to start conversion. 3. Message “Please turn the main switch off and on” will be displayed then turn off/on the MFP.


Issued by BT-CSO 53

Ver. 2

[Version down procedure from Function Enhancement version] If XPS adaptation format has been done please do procedure 1-2 first. If not, please start from procedure 4. 1. Convert the HDD from XPS format.

Convert HDD, select the key as follows. Select Service Mode State Confirmation Memory HDD Adj. XPS disenable Format

2. Press the start key to start conversion. 3. Message “Please turn the main switch off and on” will be displayed then turn off/on the MFP. 4. Conversion down the Data format.

Convert the data format, select the key as follows. Select Service Mode State Confirmation Memory HDD Adj. Conversion down

5. Press the start key to start conversion. 6. Message “Please turn the main switch off and on” will be displayed then turn off/on the MFP. Back to Index


Ver. 2 54

[Firmware updating procedure to Function Enhancement 2] TNBT0700193** 1-1. Firmware updating procedure from Function Enhancement 1 1-1. Firmware updating procedure from Function Enhancement 1 1. Download the firmware with using Compact Flash Card. 2. Turn OFF/ON the main power of MFP. 3. When first time you turn on the MFP after upgrade, "C-E002" is shown on the control panel. 4. [Up Ver.] To convert the data format, select the key as follows.

Select Service Mode State Confirmation Memory HDD Adj. Up Ver. 5. Press "Start" key to start "Up Ver". 6. Message "Please turn the main switch off and on" will be displayed then turn OFF/ON the main power of MFP. 7. It is all set when starting up the machine. 1-2. Firmware updating procedure from Initial Function Version (ONLY C550/C451) 1. Download the firmware with using Compact Flash Card. 2. Turn OFF/ON the main power of MFP. 3. When first time you turn on the MFP after upgrade, "C-E002" is shown on the control panel. 4. [Up Ver.] To convert the data format, select the key as follows.

Select Service Mode State Confirmation Memory HDD Adj. Up Ver. 5. Press "Start" key to start "Up Ver". 6. Message "Please turn the main switch off and on" will be displayed then turn OFF/ON the maim power of MFP. 7. "C-CC00" is shown on the control panel after turn on the main power. 8. [Conversion Up] To convert the data format, select the key as follows.

Select Service Mode > State Confirmation > Memory HDD Adj. > Conversion Up. 9. Press "Start" key to start "Conversion Up". 10. Message "Please turn the main switch off and on" will be displayed then turn OFF/ON the main power of MFP. 11. It is all set when starting up the machine. 2. HDD conversion up procedure to support XPS printing (ONLY C550/C451) In this procedure, printer controller (Emperon) area in HDD is expanded for SPS printing This procedure is necessary only when the customer is working with Windows Vista environment and intends to print XPS format document. Important:（Please be sure to confirm before carrying out the procedure. ） - With this procedure, the part of HDD, which Emperon is using, will be formatted. Once HDD conversion is done, the

font /macro stored in HDD will be lost. Please carry out this procedure according to the customer’s demand. - There is no compatibility between "XPS Enable Format" and "XPS disable format".

Therefore, if the HDD backup data created by HDD Backup Utility before performing the "XPS Enable Format" is restored to HDD that was formatted with "XPS enable format", MFP does not work correctly.

1. To enable the XPS, select the key as follows.

Service Mode > State Confirmation Memory HDD Adj. XPS Enable Format 2. Press "Start" key to start "XPS Enable Format". 3. Message "Please turn the main switch off and on" will be displayed then turn OFF/ON the main power of MFP. 4. It is all set when starting up the machine. 3. Version down procedure from Function Enhancement 2 (Version 6B) to Function Enhancement 1 (Version 58/5U) Important: In Function Enhancement 2, new functions such as "Scan to WebDAV" or "Scan to USB" are supported. And the format to manage the job (image data) is extended in Box section of HDD. When updating the firmware from previous version to Function Enhancement 2, this format extension is executed automatically. When performing the version down, you must do either of following operation (A or B) in the version down procedure to perform inverse conversion of this format. A. HDD Logical Format. (All HDD data will be lost.)

Please refer to the A. Version down procedure when performing HDD Logical Format. B. Delete all Public User Boxes and all Personal User Boxes manually. And delete all of data that was stored in the

System User Boxes manually. (The data that was stored in Public User Boxes, Personal User Boxes and System User Boxes will be lost.)

Please refer to the B. Version down procedure when performing all Boxes deletion.

Issued by BT-CSO


Ver. 2 55

A. Version down procedure when performing HDD Logical Format 1. Convert HDD, select the key as follows.

Select Service Mode State Confirmation Memory HDD Adj. Down Version 2. Press "Start" key to start "Down Version". 3. "OK" will be displayed then turn OFF the main power of MFP. 4. Perform the FW version down (rewrite to v58/ 5U) using compact flash. 5. "C-E002" is displayed on the panel after turning OFF/ON the main power. 6. Select Service Mode System Input State Confirmation Memory HDD Adj. DD Format 7. Select "Logical Format" and press "Start" key. 8. Message "Please turn the main switch off and on" will be displayed then turn OFF/ON the main power of MFP. 9. It is all set when starting up the machine. B. Version down Procedure when performing to delete all Boxes which are Public User Boxes, Personal User Boxes, and System Boxes 1. Delete all Public User Boxes and all Personal User Boxes. 2. Delete all data stored in System User Boxes (e.g. Secure Print User Box, Memory RX User Box etc.). 3. Convert HDD, select the key as follows. Select Service Mode State Confirmation Memory HDD Adj. Down Version 4. Press "Start" key to start "Down Version". 5. "OK" will be displayed then turn OFF the main power of MFP. 6. Perform the FW version down (rewrite to v58/ 5U) using compact flash. 7. If "C-E002" is displayed on the panel after turning OFF/ON the main power, please perform "System Error Clear". 8. Select Service Mode > System Input > Initialization 9. Select "System Error Clear" and press start key. 10. "OK" will be displayed then turn OFF/ON the main power of MFP. * When "C-E002" is displayed even if you turn OFF/ON the main power, you need to perform "HDD Logical Format". 11. It is all set when starting up the machine. Back to Index

Issued by BT-CSO


Issued by BT-CSO 56

Ver. 2

33. Abnormal odor and noise from Fusing Unit TAD:TABT0700333 [Symptom 1]

Metallic noise from Fusing Unit (creaking sound)

[Presumed Cause] It is assumed that since Bushing which holds Brush roller in Fusing Unit leaned little to the roller shaft, the edge part of the bushing has vibrated and Noise has been generated.

[Occurrence Place] [Occurrence cause]It is assumed that as the bushing was held in the state where it leaned

[Basic Action]

Heat-resistant conductive grease (SANKOL ECG25) is applied to an occurrence part. *Notice: The grease to be used should use Heat-resistant conductive grease at any cost. *Notice: Please do not disassemble except the specified part. *Notice: Be careful of a bite lump of a harness enough at the time of attachment. *Please be careful not put grease on Brush roller.

Brush roller

to the shaft, the edge part of the bushing vibrated and Noise was generated.

Bushing (Occurrence place）

Bushing

Brush roller shaft

Edge of Bushing

Screw

Screw

Screw

Cover 1

Cover ２

Screw

<Application part> In the state (Do not disassemble Unit anymore.) where Cover 1 and 2 were removed, please apply Heat-resistant conductive grease (SANKOL ECG25) between Brush roller and Bush.


Issued by BT-CSO 57

Ver. 2

[Symptom 2]

Abnormal odor with noise from Fusing Unit (Noise: creaking and rattling sound)

[Presumed Cause] The rotation failure of the bearing used in retentive portion of the averaged heat roller makes twisting to the plastic bush between the averaged heat roller and the roller bearing. There is no need to worry about a igniting or a smoking from the bush made from heat resisting materials, and a rattling sound is generated at this time. [Occurrence Place]

[Basic Action]

Replace Fusing Unit. Back to Index

Averaged heat roller

Averaged heat Roller

Bearing

Bushing (Plastic)

The rotation failure of the bearing used in retentive portion of the averaged heat roller makes twisting to the plastic bush between the averaged heat roller and the roller bearing.

Bearing


Issued by BT-CSO 58

Ver. 2

34. Noise from paper feed section (Tray1/Tray2) when feeding [Symptom]

Noise is generated when feeding papers from Tray1 and Tray2.

[Presumed Cause] Noise might be generated because of an interference between the clutch cover part in paper feed section and the edge of the gear next to the clutch cover.

[Action] *Temporary Action Please stick one OHP sheet of 8 (mm) x8 (mm) / thickness 0.1 (mm) to the following indicated place of "Paper Take-up Unit with noise" (right under a circular screw hole: red-color part ) with a double-stick tape. (It is only the back side of attachment hole for Paper Take-up Unit.) * It is the purpose to prevent an interference with the cover part of clutch and the gear by extending a little distance of Clutch of Paper Take-up Unit and the gear of main body side. Please be careful not to extend the distance too much because the transfer of the drive becomes unstable. It is an aim which is extended 0.2mm. (It spreads about 0.2mm in OHP sheet+(0.1mm) double-stick tape (0.1mm).）

* Permanent Action: Replace the clutch (Please refer to PMN: KOM072223) Back to Index

The cover part of the clutch （Blue part）

The gear on the main body

There is a possibility that the cover part of the clutch part used for the paper feed unit comes in contact with the gear on the main body side because the outline of the cover part is higher than the dedendum circle due to the backlash of the clutch when the clutch moves.

The gear of the clutch

（White part）

*1st Paper Take-up Unit *2nd Paper Take-up Unit

[Notice 1] Please be careful of the alignment of dowel when installing. (because it is afloat by the thickness of OHP sheet.)

[Notice 2] Please do not stick OHP sheet on the main body side. （The exchange time of Paper Take-up Unit is taken into consideration. ）


Ver. 2 59

35. Sticky paper when using OT-503 (Only C650) TAD:TABT0700331 [Symptom] Sticky papers occur in the combination of C650 and OT-503.

*This is the phenomenon in which exited paper toner melts with heat, and exited papers stick each other.

[Presumed Cause] It is easy to generate sticky papers due to the following conditions overlapped.

- Heat-and-high-humidity environment - Duplex printing continuously prints. - Stack many papers exited on Exit tray. - High Density Image (An image with much toner using for print) prints. [Action]

Please equip with the following unit which is only for spare part instead of OT-503. (The installation method and appearance are the same as these of OT-503.) Name : Motor Assy. Product number : A092R70000 Back to Index

Issued by BT-CSO


Issued by BT-CSO 60

Ver. 2

36. Waved Image (C650) [Symptom] With regard to Image in C650 after changing faster mode (for instance Monochrome mode just after Color mode), it may be waved. (Case example was confirmed is maximum 15 sheets)

[Presumed Cause]

It is likely that the resonant condition occurs due to the temperature condition, and fluctuation of the polygon motor of PH. As a result, the waved image is generated.

[Action] Replace PH.

Back to Index

Waved Image at a constant frequency


Issued by BT-CSO 61

Ver. 2

37. The machine does not start up [Symptom]

<<A>> The machine freezes at KM logo / Hourglass mark. <<B>> The machine seems like it shut down after KM logo / Hourglass mark appear. Nothing is on the display panel (It keeps black screen.）

KM logo Hourglass mark

[Presumed Cause] <<A>> Connection of Fiery interface is unstable. <<B>> Connection of DIMM boards on the MFP board is unstable.

[Basic Action]

<<A>> Connect Fiery interface firmly. <<B>> Demount and remount DIMM boards.

Fiery Interface DIMM boards

Back to Index


Issued by BT-CSO 62

38. JAM in Tray 3 TABT0700528** [Symptom]

Non-feed JAM in the third tray

[Cause] When papers are added on the papers which remain in the tray, the border, between the remained papers in the tray and the added papers, has extreme low friction coefficient depending on the kind of the moisture-proof wax used for package paper of papers. As a result, the bunch of papers thrusts into the transfer guide section at the front of the paper feed roller in the third tray, and the bunch of papers jammed into the transfer guide, the non-feed jam may be generated infrequently.

Ver. 2

[Action] Install the following part in the paper feed section of the third tray. * Notice: This part is not free.

Part Name: Paper feed guide Part Number: A00JP002**

(plastic)

(metal)


Issued by BT-CSO 63

Ver. 2

Back to Index

<Tray 3 (the state the pick roller flipped up) >


Ver. 2 64

39. Improvement of color IU standard yield achievement TNBT0700191**

As explained in the service manual/ training material, color IU life is defined by the life count. Life count is added up by the hours which IU is running. And standard yield is indicated as the number of prints which IU can produce until life count reaches “life value” in standard condition listed below. Due to this system, the color IU tends to reach life end before achieving standard yield if the print volume, the number of the prints per job and/or color print ratio is low because the ratio of the hours, which IU is working for printing indirectly, increase.

Standard condition on which the standard yield is calculated based

The factors which is influence with the IU page yield

C650 C550 C451 Job mode BW

Color 7 P/J 5 P/J

6 P/J 5 P/J

5 P/J 5 P/J

Color mode “Color” or “BW” (other than “Auto”) Paper size A4LEF/LETTER LEF Color ratio Black to Color = 4:1 Average print volume per month BW

Color 23,1005,775

15,000 3,750

8,550 2,250

The number of image stabilization – the number of turning on MFP – the number of returning from sleep mode– temperature/ humidity change

– 20 times per month

– no case – no change

In order to improve the achievement to standard yield for color IU installed in low print volume / low P/J / low color ratio machine, following three functions will be implemented in the new FW.

< Measures> 1. Reduce image stabilization when returning from sleep mode 2. Implement the choice to suspend color IU life stop 3. Implement the choice for new ACS mode

< Applicable FW version> C550/C451/C650 Ver. ６B (Function Enhancement 2)

These measures save the lifetime of IU in case… the users are mainly printing in monochrome. the users do not print many.(low print volume) in case ACS is chosen for default copy mode. In case timer setting of sleep is short. (Detail of measures) 1. Reduce image stabilization when returning from sleep mode

When installing applicable FW, the image stabilization will not be carried out when the MFP returns from sleep mode in case less than eight hours has passed from last Image stabilization. However, within eight hours, only auto color registration correction process is carried out if temperature in P/H changes at two degrees or more. This process is a part of image stabilization and it is done in 4 seconds, the detail of behavior of MFP shows following table.

Issued by BT-CSO


Issued by BT-CSO 65

Ver. 2

Condition Behavior of MFP

MFP state The passed time after the last image stabilization

Temperature change in P/H

Old FW New FW

eight hours or more

Image stabilization

two degrees or more

Auto color registration correction

Return from sleep mode

less than eight hours

less than two degrees

Image stabilization

No process

two degrees or more



Return from power save mode

less than two degrees

No process No process

2. Implement the choice to suspend color IU life stop

Life counter value, which the MFP stops running, can be suspended by the choice in service mode. IU replacement massage is suspended to be displayed as well. Life value

(message displayed) Maximum print

(Life stop) Normal 3610M 3776M Suspend 5415M 5581M

Notice: * Even if “Suspend” is chosen, the number of the prints will not exceed the standard yield. * This function is offered to use IU as long as it may possibly use by extensively using of the

quality margin area. Therefore in case extend lifetime is set, print quality will not guaranteed if life counter exceed determined value (3610M). So it is necessary to understand of this function and utilize this function under control of service organization.

3. Implement the choice for new ACS mode

Behavior of MFP under ACS mode can be changed by the software setting “Service Mode” “System Setting 2” “Software SW setting”: “Switch Number 50”, HEX 00 01, and main SW OFF/ON When it is chosen, the MFP works as doing for BW copying at the beginning of Job without driving color IU. <REMARK>

* In case that color original is copied, first copy time takes extra a few seconds in order to make the IU ready for color print.

* In case, mixed original (ex. monochrome, color, monochrome and color), machine works as color print from the first color original.

Back to Index


Issued by BT-CSO 66

Ver. 2

40. Image failure after starting up the machine first in the morning TABT0700553**

[Symptom]

The following image failure is generated first in the morning. 1) Carrier adhesion (Black, Magenta) 2) Low image density / images are almost not printed. 3) Uneven image density


Issued by BT-CSO 67

Ver. 2

[Cause] The conduction failure of contact part between the main body and Bk-IU

[Action]

Either rubber or harder urethane foam is stuck on the fixed lever control part of Bk-IU, and it is pressed down to the back side of Bk-IU.

Back to Index

Bizhub C451/550/650 - KONICA MINOLTAservice.bcn.konicaminolta.cn/inc/openFile.jsp?url...Bizhub...

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