M134C+29185 Serv. Manual

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Alignment Procedure

MODEL 27F230T/24FS210T V3.0

PREPARED BY : Jenny DATE: 2004-5-13

File No.YF-Fk07-2002

Page 1 8 pages in total

Serial number TS-00

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No.YF-Fk07-2002 Page 2,9pages in total

Alignment Procedure

Summarize

27F230T/24FS210T chassisAlignment Procedure

29185N6/25185N6is NTSC only system model developed for NAFTA market

specially. In trial run, burn the software A27V01-TO to TMPA8809 or TMPA8827 IC by

OTP method. after the trial run, make the maskplease take care in production.

To solve the probable problems in production, for the workers participatein alignment, please be familiar with the Alignment Procedure, and be master of thefeatures.

There are 2 operation modesuser mode and factory mode. You can use the

Remote control or buttons on the panel to operate in user mode, but only Remotecontrol works in factory mode.

The way to enter factory modePress D-MODEbutton on RC pressOK

andCH+ CH-to select the parameter you want to adjust. PressVOL+ VOL-to change the parameters. To quit factory modepressD-MODEbutton

on the right of SURR buttonthe factory data changed will be memorized.

A few special modes

Aging mode used before the aging before alignment. The aging could

start in factory mode.

Vertical stop modeused to confirm the screen voltage. Press INPUTbutton in factory mode to enter Vertical stop mode. Then press

INPUT button again to exit.

White balance alignment modeused for white balance auto alignment.PressBUS OFFbutton near the left of MTS button toenter White balance alignment mode.

Factory mode To initialize the set. Press SURR button in factory modeto enter Factory modethe screen displaysWAITafter the

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Alignment procedure

Al ignment contents1. Adjustment of B+ voltage

Receive Philips standard testing pattern to RF input.

Adjust VR821 in STANDARD mode until voltage at B130V0.5V

2. RF AGC adjustment Observe monitor the collector waveform of Q101 with the probe of Oscilloscope as

illustration below. Select channel 2 (>70dB) from the antenna input. Enter D-mode,select menu6 to adjust RFAGC item until the monitor peak value to 0.8Vp-p.

IN603Pf

outpuinput

3. Screen & Focus voltage adjustment

Apply pattern signal in normal status, enter Factory modepressINPUTbutton

to stop vertical scan.

Notethe RC/GC/BC is preset to be 80GD/BD is 40

Adjust the SCRREEN switch on the flyback transformer to make a horizontalshining line just visible on the screen.

Turn on the vertical output, adjust the FOCUS on the flyback transformer toobtain the optimum focus.

4. White balance adjustment(NORMAL:X=285+8, Y=294+8)1) Apply the black and white pattern in normal status;2) Alignment of normal color temperature

Change Color Temperature to normal status

Use a color analyzer to measure the black side of the screen. By changing thevalue of RC, GC and BC, set the reading of the color analyzer to X=285+8,Y=294+8.

Use a color analyzer to measure the white side of the screen. By changing the

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6. picture geometric adjustment1) Apply the Philips standard testing pattern in normal status, then enter

menu 3, adjusting the following data to get the min-distortion.

HPOS6Horizontal Center PARA6 Level TRAP6 Trapezia

HSIZE6Horizontal Size CNRT6 Top CNRB6 Bottom

2) Apply the Philips standard testing pattern in normal status, then entermenu 3, adjusting the following data to get the min-distortion.

HIGH6 (Height) VP60Vertical Center

VLIN6Linearity VSC6Vertical-S Correction7 EHT/HEW ratio testtest with PC programInstrumentsEHT test meterEHT test bar(1000:1)adjustable power supplyvirtual

DY( the same L value with CRT in production ).

Test means Measure the EHT value V when Ib=0HEW voltage value is V1(DCvoltage at 2 ends of C249).

Check means apply PC test meansV/V1 should satisfy the requiments below

EHT/HEW ratio

44-29RFLW-TS2A 1245 3% ( 1207 1282)29185N6

(27F230T)

A60LVY196X15(O) 12563% ( 1218 1293 )25185N6

(24F210T)

8X rays over voltage protecting circui t test:TV enter working modeapply more than 27V DC voltage between two ends of

C249the set should enter protecting modeor check X rays protecting circui t.

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9PS line polarities testConnect follow the graphic below

DX 2.2k

PS socket M

TO F801

Plug the PS line onto the PS socket M, then touch any pin of F801 with theprobe, the LED DX will shine at the moment, with sound reminder, or it isdisqualification.

10PS power test(Random test)

Instruments Power meter.

Input signal pattern Color barSound 1KHZ 100% modulation.

Input signal intensity 60dBuv (1 mV rms)

Test points find the graphic below

Test means Set the Brightness, CR to the highest, adjust the volume to make

the sound output to be 0.5W. Connect the power meter to testthe power consumption. Transfer the set to be standby, and testthe power consumption at the moment, which should meet the

requirements below

Model Power Standby power (120V)

29185N6 114 W 10% < 1W

DC PS

9V

- + Sound reminder

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11High voltage and Ib value limi t test( random test )Instruments High voltage meter Ib meter.

Input signal pattern White verticalInput signal intensity 60dBuv (1 mV rms)

Test means Connect High voltage meter and Ib meter. Test voltage of different

Ib separately, It

should meet the requirements below

Anode high voltage (kV)Ib

25 29

Ib = 50A 30.0 1.0 30.0 1.0

Ib = 50A & 1200A Diff. < 2 Diff. < 2

12Heater voltage test ( random test )Instruments RMS voltage meter

Input signal pattern Philips test graphic

Input signal intensity 1 mVrms60dBuVto 50 mVrms

Connect the RMS voltage meter to the 2 ends of CRT glowerstest the heater

voltage of highest CR and Brightness, It should meet6.30.3Vrms

13BTSC/SAP function testBTSC/SAP do not need testbut BTSC/SAP decoder function should be tested

normal or not.

14CCD and VOL-CHIP function testVOL-CHIP and CCDfunction testplease find the service manual in detail.

15InitializationUnder the factory modepressSURRbuttonthe screen displaysWAIT

when the screen displays OK, the initialization finished,

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EEPROM DATA:

FAC 01 FAC 02 FAC 02 FAC 03

Item Data Item Data Item Data Item Data

RC * 80 HIGH5 1B/0D HIGH6* 1A/0E HPOS5 0C/0F

GC * 80 VP50 03/01 VP60 * 04/05 PARA5 10/11

BC * 80 VLIN5 0A/0B VLIN6* 0A/0B TRAP5 29/27

GD * 40 VSC5 0C/07 VSC6 * 0B/08 HSIZE5 1F/16

BD * 40 VBLK5 00/00 VBLK6 00/00 CNRT5 0A/08

VCEN5 32/33 VCEN6 33/35 CNRB5 06/08VEHT5 03/03

HEHT5 03/03


Item Data Item Data Item Data Item DataHPOS6* 10/14 CNTX 7F BRTC 40 ST3 20

PARA6* 0F/16 CNTN 08 COLC 2C SV3 20

TRAP6* 27/25 BRTX 20 COLP 00 SV4 19

HSIZE6* 20/16 BRTN 20 SCOL 07 SVD 19

CNRT6* 0B/09 COLX 35 SCNT 0C ASSH 07

CNRB6 * 07/0D COLN 00 CNTC 51/4C SHPN 10VEHT6 03/03 TNTX 28 TNTCT 40 SHPN 2A

HEHT6 03/03 TNTN 28 TNTCV 40



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MPB-STR 43 SVM 05 CLTM 4B HAFC 09

MPB-HMC 0D SVM1 05 CLVO 4B AGCC 1C

MPB-HP 07 OSD2 20 CLVS 53 NOIS 01

MPB-LP 11 OSDF2 64 ABL 27 ONTM 08

MPB-LIM 00 PYNX 28 DCBS 14 NSHP 1A

SUB-FRE 28 PYNN 18 FLG0 82 PVLVL 80

SUB-HP 02 PYXS 22 FLG1 0D PLMT 80VOL-MAI 00 PYNS 10



RC-C 0 RC-W 0 D-COL 32 S-COL 32

GC-C 0 GC-W 0 D-BRI 32 S-BRI 32

BC-C 0 BC-W 0 D-CON 5A S-CON 32

GD-C 00 GD-W 00 D-SHP 32 S-SHP 32

BD-C 00 BD-W 00

YUVGC 03

YUVBC 03


D t

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Notethe items with * are adjustableother items are notpls do not adjust them

FAC 23 FAC 24

Item Data Item Data

B-Hz120-BAS 14 COMB1 00

B-Hz500-TRE 14 COMB2 05

B-Hz1K5 0C COMB3 00

B-Hz5K 0C AV GAIN 19

B-Hz10K 0C

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Figure3 No Raster, +B OK

No raster, +B ok

Is the +9V, +5Vresistance to earth?

Check/Replace

the load of the

abnormal branch

NO

Y

Is there a output

waveform Pin13

of IC101?

No

Is the drive

circuit ok?

No

Check\replace

the drive circuit

No

Is Pin2 of IC101 low

voltage level?

Yes

Is B of Q202 low

voltage level?

Yes Is there the waveat C of 411?

Increase

VG2

NG

Replace FBT

ReplaceR461

Yes Is R461ok?

YesNo

Yes

Check horizontal scan circuit, such

as C412, C413, C419, etc

NoYes

Is both +14V and -14V ok?

Is the wave ok at Pin6 of IC301?

No

Yes

No

Check vertical scan circuit

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No picture, dense noise

dots

Is the antenna feed line

or the adapter broken

or unsoldered?

Handing the antenna

fault

Yes

No

Is the signal at

Pin41, Pin42 of

IC101 ok?

No

Is the signal at IF

pin of the tuner ok?

No

Is the signal at Pin SCL,

SDA of tuner ok?

No

Check signal at P5, P57, P58, P59,

and P60 of IC101 and replace the

abnormal relative circuit

Yes

Check EEPROM

Yes Check/Replace

IC101

Yes Is the supply voltage

of tuner ok?

No

Check/Replace

IC201, IC202, D101.

Yes Check/Replace

Tuner

YesCheck the relative

circuit of Q101,Z141 etc

Figure 4 No Picture dense noise dots

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Symptom: raster ok, no

picture, no sound, sparse

noise dots

Apply the pointer of

multimeter at R X 1 K ,connect one probe to GND,

use another to touch Pin42 of

IC101. Are there interference

particles flashing on the

screen?

Unsolder a pin of C107, apply the

pointer of multimeter at R X 1 K

, connect the red probe to GND,use the black probe to touch B of

Q101. Are there interferenceparticles flashing on the screen?

Yes

Yes

Replace the Tuner

NoIs the voltage

at Pin29, P36

of IC101 ok?

NoCheck and repair

the +9V power

supply

No

Bridge a capacitor of 1000pF between

the input and output of Z141. Apply

the pointer of multimeter at R X 1 K,connect the red probe to GND, and use

the black probe to touch B of Q101 Are

there interference particles flashing on

the screen

Yes

Replace Z141 (SAW)

Does the IF

pre-amplifier

work

normally?

YesCheck &

repair the IF

pre-amplifier

circuit

No

Figure 5 Sparse noise dots

No

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No sound

Is the speaker ok? No Replace the speaker

Yes

Apply the pointer of multimeter at

RX1K connect one probe to GND,use another to touch Pin4, Pin12 of

IC602, Is there interference noise

from the speaker.

No Check power

supply of IC602

Yes

Is the waveform

at Pin47 of

IC1001 ok?

YesCheck/Replace the power

supply of IC1001. Then

RESET

NG Is the BUS

ok?Check IC101 and

the relative circuit

No

No

Check/Replace

Q203, X202 etc.

NG Is the waveform at

Pin30 of IC101 ok? Replace IC101No

YesIs it mute at P6

of IC602?

Replace

IC602

Check/Replace

Q601, Q602

and Q603 etc.

Yes

No

Figure 6 No Sound

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No Picture

TV&AVhavent

Picture

Is RGB signal

ok?

Is +9V,

+200V ok?

Ok

Check

Q501~Q506Check R516 ~ R521

etc.

No Check Pin20,

Pin24 of IC101

Yes

Check P25, P49

of IC101 and the

relative circuit

NGReplace

IC101

Check P13 of IC901

NoCheck Q917 and

Video alleyway CircuitNGTV has

Picture. AV

hasnt

Picture.

Is the waveform at

Pin12, Pin14 of

IC901 ok?

YesIs the logic at P9,

P10 of IC901 ok?No

Check P1 of IC101,

P4 of IC1001 and

the relative circuit

Check Q901 ~Q904 alleyway

circuit

No

Replace IC901

Yes

AV has

Picture. TV

hasnt

Is the waveform

at P15 of IC901

ok?

Is the logic atP9, P10 of

IC901 ok?

YesYes

Is the waveform atNo

Replace

IC901

No

Check P1 of IC101, P4 of

IC1001 and the relative

circuit

Figure 7 no Picture

Yes Yes

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Is both +14V and -14V ok?Yes No

Is the signal at P1 of IC301

ok?

Check/Replace IC301 Check signal at P16 of

IC101

No

Check/Replace IC101

Yes

Check/Replace R245,

R311, R313.

Yes

Check/Replace R431,

R433 D431 D432 etc

No

Figure 8 No Vertical Scanning

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M134C+29185 Serv. Manual

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