DTV2760C-1

SERVICE MANUAL

DTV2760C

S/M CODE NO. M33A02SASMDATE OF ISSUE 01/2008

27" MTS STEREO COLOR TELEVISION

WITH DIGITAL TUNER

ORIGINALVERSION (A)

All the specifications and features are subject to change without notice.

IMPORTANT SERVICE SAFETY INFORMATION

Operating the receiver outside of its cabinet or with itsback removed involves a shock hazard. Work onthese models should only be performed by those whoare thoroughly familiar with precautions necessarywhen working on high voltage equipment.

Exercise care when servicing this chassis with powerapplied. Many B plus and high voltage RF terminals areexposed which, if carelessly contacted, can causeserious shock or result in damage to the chassis.Maintain interconnecting ground lead connectionsbetween chassis, escutcheon, picture tube dag andtuner cluster when operating the chassis.

These receivers have a "polarized" AC line cord. The ACplug is designed to fit into standard AC outlets in onedirection only. The wide blade connects to the "groundside" and the narrow blade connects to the "hot side" ofthe AC line. This assures that the TV receiver is properlygrounded to the house wiring. If an extension cord mustbe used, make sure it is of the "polarized" type.

Since the chassis of this receiver is connected to oneside of the AC supply during operation, service shouldnot be attempted by anyone not familiar with theprecautions necessary when working on these typesof equipment.

When it is necessary to make measurements or tests withAC power applied to the receiver chassis, an IsolationTransformer must be used as a safety precaution and toprevent possible damage to transistors. The IsolationTransformer should be connected between the TV linecord plug and the AC power outlet.

Certain HV failures can increase X-ray radiation.Receivers should not be operated with HV levelsexceeding the specified rating for their chassis type. Themaximum operating HV specified for the chassis used inthese receivers is 33.0kV±2.0kV at zero beam currentwith a line voltage of 120V AC. Higher voltage may alsoincrease the possibility of failure in the HV supply.

It is important to maintain specified values of allcomponents in the horizontal and high voltage circuitsand anywhere else in the receiver that could cause a risein high voltage, or operating supply voltages. No changesshould be made to the original design of the receiver.

Components shown in the shaded areas on theschematic diagram and/or identified by in thereplacement parts list should be replaced only withexact factory recommended replacement parts. Theuse of unauthorized substitute parts may createshock, fire, X-ray radiation, or other hazards.

To determine the presence of high voltage, use anaccurate high impedance HV meter connectedbetween the second anode lead and the CRT daggrounding device. When servicing the High VoltageSystem, remove static charges from it by connecting a10k ohm resistor in series with an insulated wire (suchas a test probe) between the picture tube dag and 2ndanode lead (have AC line cord disconnected from ACsupply).

The picture tube used in this receiver employs integralimplosion protection. Replace with a tube of the sametype number for continued safety. Do not lift picturetube by the neck. Handle the picture tube only whenwearing shatterproof goggles and after discharging thehigh voltage completely. Keep others withoutshatterproof goggles away.

When removing springs or spring mounted parts from thetuner, tuner cluster or chassis, shatterproof goggles mustbe worn. Keep others without shatterproof goggles away.

Before returning the receiver to the user, perform thefollowing safety checks:1.

2.

3.

Inspect all lead dress to make certain that leads arenot pinched or that hardware is not lodged betweenthe chassis and other metal parts in the receiver.Replace all protective devices such as nonmetalliccontrol knobs, insulating fishpapers, cabinet backs,adjustment and compartment covers or shields,isolation resistor-capacitor networks, mechanicalinsulators, etc.To be sure that no shock hazard exists, a check forthe presence of leakage current should be made ateach exposed metal part having a return path to thechassis (antenna, cabinet metal, screw heads,knobs and/or shafts, escutcheon, etc.) in thefollowing manner.

Plug the AC line cord directly into a 120V AC receptacle.(Do not use an Isolation Transformer during thesechecks.) All checks must be repeated with the AC linecord plug connection reversed. (If necessary, anonpolarized adapter plug must be used only for thepurpose of completing these checks.)

If available, measure current using an accurate leakagecurrent tester. Any reading of 0.35mA or more isexcessive and indicates a potential shock hazard whichmust be corrected before returning the receiver to theowner.

If a reliable leakage current tester is not available, thisalternate method of measurement should be used.Using two clip leads, connect a 1500 ohm, 10 wattresistor paralleled by a 0.15µF capacitor in series witha known earth ground, such as a water pipe or conduitand the metal part to be checked. Use a VTVM orVOM with 1000 ohms per volt, or higher, sensitivity tomeasure this AC voltage drop across the resistor. Anyreading of 0.35 volt RMS or more is excessive andindicates a potential shock hazard which must becorrected before returning the receiver to the owner.

TO EXPOSEDMETAL PARTS

TO KNOWNEARTH GROUND

AC SCALEVT VM

1.5K OHMS10W

15µ FTEST PROBE

A1-1

PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.

(Please refer to figures.)

Caution:Pb free solder has a higher melting point than standard solder;

Typically the melting point is 86°F~104°F(30°C~40°C) higher.

Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C).

In case of using high temperature soldering iron, please be careful not to heat too long.

Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).

All products with the printed circuit board with PbF printing must be serviced with lead free solder.

When soldering or unsoldering, completely remove all of the solder from the pins or solder area,

and be sure to heat the soldering points with the lead free solder until it melts sufficiently.

Distinction of PbF PCB:

Recommendations

Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.

ABOUT LEAD FREE SOLDER (PbF)

•

••

A1-2

A1-1

A1-2

A2-1

A3-1~A3-5

B1-1

B2-1, B2-2

C-1

C-1, C-2

D-1~D-6

E-1~E-5

F-1, F-2

G-1

H-1, H-2

H-3, H-4

I-1~I-4

I-5

J-1, J-2

J-3, J-4

J-5, J-6

J-7, J-8

J-9, J-10

J-11, J-12

J-13, J-14

J-15, J-16

J-17, J-18

J-19, J-20

J-21, J-22

J-23, J-24

K-1, K-2

L-1

M1-1

M1-1

M2-1~M2-7

TABLE OF CONTENTS

A2-1

IMPORTANT SERVICE SAFETY INFORMATION ..........................................................................................

ABOUT LEAD FREE SOLDER (PbF) ..............................................................................................................

TABLE OF CONENTS ......................................................................................................................................

GENERAL SPECIFICATIONS ..........................................................................................................................

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF ANODE CAP ...................................................................................................................

2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ....................................................................

SERVICE MODE LIST .......................................................................................................................................

WHEN REPLACING EEPROM (MEMORY) IC ................................................................................................

ELECTRICAL ADJUSTMENTS ........................................................................................................................

TROUBLESHOOTING GUIDE ..........................................................................................................................

IC DESCRIPION ................................................................................................................................................

SEMICONDUCTOR BASE CONNECTIONS .....................................................................................................

BLOCK DIAGRAM

MICON/CHROMA/DEFLECTION/TUNER/IF/AV SWITCH/SOUND AMP/CRT ..........................................

DIGITAL .........................................................................................................................................................

PRINTED CIRCUIT BOARDS

TV MT/CRT ...................................................................................................................................................

DIGITAL .........................................................................................................................................................

SCHEMATIC DIAGRAMS

MICON............................................................................................................................................... ......

CHROMA .......................................................................................................................................................

DEFLECTION ................................................................................................................................................

POWER .........................................................................................................................................................

TUNER/IF ......................................................................................................................................................

AV SWITCH/SOUND AMP ............................................................................................................ ...............

CRT..........................................................................................................................................................

POWER2 .......................................................................................................................................................

SDRAM.....................................................................................................................................................

FLASH......................................................................................................................................................

ADC&DAC .....................................................................................................................................................

AV OUT....................................................................................................................................................

WAVEFORMS ....................................................................................................................................................

MECHANICAL EXPLODED VIEW ....................................................................................................................

MECHANICAL REPLACEMENT PARTS LIST ................................................................................................

ACCESSORY REPLACEMENT PARTS LIST ...................................................................................................

ELECTRICAL REPLACEMENT PARTS LIST ..................................................................................................

GENERAL SPECIFICATIONSG-1 TV CRT CRT Size / Visual Size 27 inch / 676.0mmV

System CRT Type NormalMagnetic Field BV/BH +0.45G/0.18G

Color System NTSCDisplay Capability 480iSpeaker 2Speaker

Position FrontSize 2.0 x 3.5 InchImpedance 8 ohm

Sound Output MAX 1.0 + 1.0 W10%(Typical) - W

NTSC3.58+4.43 /PAL60Hz NoG-2 Tuning Broadcasting System Analog US System M

System Digital ATSC(8VSB)/QAMTuner and System 1Tuner Receive CH Destination USA(W/ CABLE)CH Coverage 2 - 69, 4A, A-5 - A-1,

A - I, J - W, W+1 - W+84Intermediate Digital 44.00MHzFrequency Analog Picture(FP) 45.75MHz

Sound(FS) 41.25MHzFP-FS 4.50MHz

Preset CH NoStereo/Dual TV Sound YesTuner Sound Muting Yes

G-3 Power Power Source AC 120V AC 60HzDC

Power Consumption at AC 110 W at AC 120 V 60 Hz

Stand by (at AC) 3 W at AC 120 V 60 HzPer Year -- kWh/Year

Energy Star NoProtector Power Fuse Yes

Safety Circuit YesIC Protector(Micro Fuse) No

G-4 Regulation Safety UL(UL1492)Radiation FCCX-Radiation DHHS

G-5 Temperature Operation +5oC ~ +40oCStorage -20oC ~ +60oC

G-6 Operating Humidity Less than 80% RHG-7 OSD Language English French SpanishG-8 Clock and Clock Yes

Timer Clock Display 12HCalendar YesSleep Timer Max Time 120 Min

Step 10 Min On Timer/Off Timer Program NoGame Timer NoWake Up Timer NoTimer Back-up (at Power Off Mode) more than -- Min Sec

A3-1

GENERAL SPECIFICATIONSG-9 Remote Unit RC-NJ

Control Glow in Dark Remocon NoFormat NEC Remocon Format OrionCustom Code 86-05 hPower Source Voltage(D.C) 3V

UM size x pcs UM-4 x 2 pcs Total Keys 26 KeysKeys Power Yes

1 Yes2 Yes3 Yes4 Yes5 Yes6 Yes7 Yes8 Yes9 Yes0 Yes100 NoCH Up/MENU Cursor Up YesCH Down/MENU Cursor Down YesVolume Up/MENU Cursor Right YesVolume Down/MENU Cursor Left YesClosed Caption YesCH1/CH2 NoTV/Video(TV/AV) YesCH RTN(Quick View) YesSleep YesDisplay(Call) / - YesReset NoMenu NoEnter NoMenu/Enter YesMute YesExit YesAudio Select YesSet + NoSet - NoPicture Size YesAnalog/Digital Yes

A3-2

GENERAL SPECIFICATIONSG-10 Features Picture Brightness, Contrast, Color, Tint, Sharpness Yes

Mode (Picture preference) NoColor Temperature No

Audio SAP YesTone Control (Bass, Treble, Balance) NoStable Sound NoBBE NoSRS WOW(SRS 3D/Focus/Tru Bass) NoVariable Audio Out No

Tuning TV/CABLE YesCH Program YesAdd/ Delete Yes

Label CH Label NoVideo Label No

Favorite CH NoLock Hotel Lock No

Channel Lock NoVideo Lock NoPanel Lock No

Auto Shut Off YesAuto Setup NoPower On Memory YesV-Chip Yes

Type USA, ORION TypeRRT YesImage Tilt NoSVM Circuit NoComb Filter No

Cable Clear NoCinema Mode NoDisplay Format NoAspect NoClosed Caption YesCC Advance YesCC Setting YesSignal Meter NoAudio Language YesPicture Size YesZoom YesPicture Scroll NoFBT Leak Test Protect NoMenu=Volume Up+Volume Down YesPOD (Point Of Deployment) NoTV Guide (EPG) NoDigital Out Dolby Digital No

MPEG NoPCM NoDTS No

HDMI Input NoComponent Input Yes

720×480i (4:3) Yes (60Hz)720×480i (16:9) Yes (60Hz)720×480p (4:3) No720×480p (16:9) No720×576i (4:3) No720×576i (16:9) No720×576p (4:3) No720×576p (16:9) No1280×720p No1920×1080i No

A3-3

GENERAL SPECIFICATIONSG-11 Accessories Owner's Manual Language English

W/ Warranty YesRemote Control Unit YesRod Antenna No

PolesTerminal

Loop Antenna NoTerminal

U/V Mixer NoDC Car Cord (Center+) NoGuarantee Card NoWarning Sheet NoCircuit Diagram NoAntenna Change Plug NoService Station List NoImportant Safety Instruction NoDew/AHC Caution Sheet NoAC Plug Adapter NoQuick Set-up Sheet NoBattery No

UM size x pcsOEM Brand No

AC Cord NoAV Cord (2Pin-1Pin) NoRegistration Card (NDL Card) NoPTB Sheet NoESP Card No300 ohm to 75 ohm Antenna Adapter NoInformation Sheet(for HDMI) NoInformation Sheet(RETURN) YesInformation Sheet(Channel) NoInformation Sheet(RRT) No

G-12 Interface Switch Front Power YesChannel Up/Menu Up YesChannel Down/Menu Down YesVolume Up/Menu Right YesVolume Down/Menu Left Yes

Indicator Power No Stand-by No On Timer No

Terminals Front Video Input = VIDEO2 RCA Audio Input = VIDEO2 RCA x 2 (L/MONO,R)S Input NoOther Terminal No

Rear Video Input(Rear1) = VIDEO1 RCA Video Input(Rear2) = VIDEO3 NoS Input = VIDEO1 YesS Input = VIDEO3 NoAudio Input(Rear1) = VIDEO1 RCA x 2 (L/MONO,R)Audio Input(Rear2) = VIDEO3/Component NoVideo Output NoAudio Output RCA x 2(L,R)Component Input1 RCA x 3Component Input2 NoHDMI Input1(w/ Analog Audio L/R) NoHDMI Input2(w/ Analog Audio L/R) NoDigital Audio Out NoCable Card Slot No IR Blaster No VHF/UHF Antenna Input F TypeAC Outlet No

A3-4

GENERAL SPECIFICATIONSG-13 Set Size Approx. W x D x H (mm) 650 x 500.5 x 571.5 G-14 Weight Net (Approx.) 32.6kg (71.9lbs)

Gross (Approx.) 36.3kg (80.0lbs)G-15 Carton Master Carton No

Content ---- SetsMaterial -- /--Dimensions W x D x H(mm) -- x -- x -- Description of Origin No

Gift Box Material Double/White Dimensions W x D x H(mm) 731 x 580 x 665 Description of Origin Yes

Drop TestNatural Dropping At 1 Corner / 3 Edges / 6

SurfacesHeight (cm) 31

Container Stuffing 192 Sets/40' containerG-16 Material Cabinet Cabinet Front PS 94V0 DECABROM

Cabinet Rear PS 94V0 DECABROM PCB Non-Halogen Demand No

Eyelet Demand YesG-17 Environment Environmental standard requirement Green procurement of ORION

Pb- Free Phase3(PHASE3A)Measures for Whisker Yes

A3-5

1. REMOVAL OF ANODE CAPRead the following NOTED items before starting work.

After turning the power off there might still be a potentialvoltage that is very dangerous. When removing theAnode Cap, make sure to discharge the Anode Cap'spotential voltage.Do not use pliers to loosen or tighten the Anode Capterminal, this may cause the spring to be damaged.

REMOVAL

1. Follow the steps as follows to discharge the Anode Cap.(Refer to Fig. 1-1.)Connect one end of an Alligator Clip to the metal part ofa flat-blade screwdriver and the other end to ground.While holding the plastic part of the insulated screwdriver,touch the support of the Anode with the tip of thescrewdriver.A cracking noise will be heard as the voltage is discharged.

Flip up the sides of the Rubber Cap in the direction of thearrow and remove one side of the support.(Refer to Fig. 1-2.)

2.

GND on the CRT

Screwdriver

Alligator Clip

SupportCRT

GND on the CRT

Rubber Cap

CRT Support

Fig. 1-2

3. After one side is removed, pull in the opposite direction toremove the other.

NOTE

Take care not to damage the Rubber Cap.

INSTALLATION

1. Clean the spot where the cap was located with a smallamount of alcohol. (Refer to Fig. 1-3.)

Location of Anode Cap

NOTE

Confirm that there is no dirt, dust, etc. at the spot wherethe cap was located.

2.

3.

Arrange the wire of the Anode Cap and make sure thewire is not twisted.Turn over the Rubber Cap. (Refer to Fig. 1-4.)

4. Insert one end of the Anode Support into the anode button,then the other as shown in Fig. 1-5 .

5.6.

Confirm that the Support is securely connected.Put on the Rubber Cap without moving any parts.

CRTSupport


Fig. 1-3

Fig. 1-4

Fig. 1-5

*

*

Fig. 1-1

B1-1

B2-1

Masking Tape(Cotton Tape)


2.

REMOVAL

IC

Put Masking Tape (cotton tape) around the Flat PackageIC to protect other parts from any damage.(Refer to Fig. 2-1.)

1.

Fig. 2-1

NOTE

REMOVAL AND INSTALLATION OFFLAT PACKAGE IC

Some ICs on the PCB are affixed with glue, so becareful not to break or damage the foil of each ICleads or solder lands under the IC when removing it.

NOTE

Masking is carried out on all the parts located within10 mm distance from IC leads.

Blower type ICdesoldering machine

IC

Heat the IC leads using a blower type IC desolderingmachine. (Refer to Fig. 2-2.)

2.

Fig. 2-2

NOTE

Do not rotate or move the IC back and forth until ICcan move back and forth easily after desoldering theleads completely.

When IC starts moving back and forth easily afterdesoldering completely, pickup the corner of the IC usingtweezers and remove the IC by moving with the ICdesoldering machine. (Refer to Fig. 2-3.)

3.

Blower type ICdesolderingmachine

IC

Fig. 2-3

Tweezers

Peel off the Masking Tape.4.

Absorb the solder left on the pattern using the BraidedShield Wire. (Refer to Fig. 2-4.)

5.

NOTE

Do not move the Braided Shield Wire in the verticaldirection towards the IC pattern.

Braided Shield Wire

Soldering Iron

Fig. 2-4IC pattern

B2-2


Supply solderingfrom upper positionto lower position

IC

Supply the solder from the upper position of IC leadssliding to the lower position of the IC leads. (Refer to Fig. 2-6.)

2.

Fig. 2-6

Soldering IronSolder

IC

Absorb the solder left on the lead using the BraidedShield Wire. (Refer to Fig. 2-7.)

3.

Fig. 2-7

Soldering Iron

Braided Shield Wire

NOTE

Do not absorb the solder to excess.

IC

When bridge-soldering between terminals and/or thesoldering amount are not enough, resolder using a Thin-tip Soldering Iron. (Refer to Fig. 2-8.)

4.

Fig. 2-8

Thin-tip Soldering Iron

NOTE

When the IC leads are bent during soldering and/orrepairing, do not repair the bending of leads. If thebending of leads are repaired, the pattern may bedamaged. So, always be sure to replace the IC in thiscase.

Finally, confirm the soldering status on four sides of theIC using a magnifying glass.Confirm that no abnormality is found on the solderingposition and installation position of the parts around theIC. If some abnormality is found, correct by resoldering.

5.Solder temporarily

Soldering Iron

INSTALLATION

Take care of the polarity of new IC and then install thenew IC fitting on the printed circuit pattern. Then soldereach lead on the diagonal positions of IC temporarily.(Refer to Fig. 2-5.)

1.

Fig. 2-5

Solder temporarily

C-1

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.To enter the Service Mode, press both set key and remote control key for more than 2 seconds.

Set Key Remocon Key Operations

VOL. (-) MIN 0 Releasing of V-CHIP PASSWORD.

VOL. (-) MIN 1

Initialization of factory data.NOTE: Do not use this for normal servicing.

If you set factory initialization, the memories are reset such as the channelsetting, and the POWER ON total hours.

VOL. (-) MIN 6Check for the firmware version.Can be checked of the INITIAL DATA of MEMORY IC.Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

Check of the SUM DATA and MICON VERSION on the screen.Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

8VOL. (-) MIN

VOL. (-) MIN Display of the Adjustment MENU on the screen.Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).9

ADDRESS DATA

POWER ON total hours. = (16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)

1.2.3.4.

Turn on the POWER, and set to the TV mode.Set the VOLUME to minimum.Press both VOL. DOWN button on the set and Channel button (8) on the remote control for more than 2 seconds.After the confirmation of each check sum, power on total hours, digital tv micon firware and micon version, turn off thepower.

Initial total of MEMORY IC, POWER ON total hours, MICON VERSION and Digital TV MICON Firmware VERSION can bechecked on the screen. Total hours are displayed in 16 system of notation.

NOTE:

WHEN REPLACING EEPROM (MEMORY) IC

If you set a factory initialization, the total hours is reset to "0".Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.

FIG. 1

INIT 00 40

CRT ON @@@@

OEC7180A_12

DTV CA02E77061

INIT 1F6C

ROM: 3757

MICON Version

Initial setting data check sum.

Rom correction data check sum.

Digital TV MICON Firmware

CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS, MICON VERSION ANDDIGITAL TV MICON FIRMWARE VERSION

Initial setting content of MEMORY IC.

NOTE: The each item value might be different according to each set.

C-2

WHEN REPLACING EEPROM (MEMORY) IC

If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken toensure correct data settings while making reference to TABLE 1.

Table 1

FIG. 2

1.2.

3.

4.5.6.7.8.

9.10.11.The unit will now have the correct DATA for the new MEMORY IC.

Enter DATA SET mode by setting VOLUME to minimum.Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.ADDRESS and DATA should appear as FIG 2.ADDRESS is now selected and should "blink". Using the CH. UP/DOWN button on the remote, step through theADDRESS until required ADDRESS to be changed is reached.Press VOL. LEFT/RIGHT button to select DATA. When DATA is selected, it will "blink".Again, step through the DATA using CH. UP/DOWN button until required DATA value has been selected.Pressing VOL. LEFT/RIGHT button will take you back to ADDRESS for further selection if necessary.Repeat steps 3 to 6 until all data has been checked.When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.

After the data input, set to the initializing of shipping.Turn on the POWER.Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.After the finishing of the initializing of shipping, the unit will turn off automatically.

CONFIRMATION OF INITIAL DATA

INIT +0 +1 +2 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F

00 40 00 00 00 09 25 24 0D 49 80 00 00 FA 00 00 00

10 00 00 00 65 78 14 00 A1 00 00 00 00 60 00 09 00

20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08

+3

30 88 00 00 00 00 09 72 0F 02 00 00 00 87 03 F7 21

40 02 32 00 00 04 23 20 28 00 40 20 40 40 40 00 00

50 00 64 00 00 00 00 00 00 0A 45 A0 00 00 00 00 00

60 00 97 00 00 00 00 00 00 00 00 00 00 00 00 00 00

70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

80 00 00 00 00 00 00 00 00 00 03 00 00 00 00 00 00

90 00 00 00 00 00 00 00 00 00 00 00 01 99 01 00 84

A0 04 11 00 00 00 04 00 00 00 00 00 00 00 00 04 00

B0 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00

C0 05 08 0C 0E 10 13 16 18 1B 1D 20 22 25 27 2A 2C

D0 2F 31 34 36 39 3B 3E 40 42 45 47 49 4C 4E 51 53

E0 55 56 5A 5C 5E 60 62 64 66 67 69 6A 6C 6D 6F 70

F0 72 73 74 75 76 77 78 78 79 79 7A 7B 7C 7D 7E 7F

ADDRESS DATA

INIT 00 40CRT ON @@@@OEC7180A_12DTV CA02E77061INIT 1F6CROM: 3757

ELECTRICAL ADJUSTMENTS

D-1

1. ADJUSTMENT PROCEDURERead and perform these adjustments when repairing thecircuits or replacing electrical parts or PCB assemblies.

Prepare the following measurement tools for electricaladjustments.

1. Oscilloscope2. Digital Voltmeter3. Multi-sound Generator4. Pattern Generator5. AFC Oscillator

CAUTION

Use an isolation transformer when performing any serviceon this chassis.Before removing the anode cap, discharge electricitybecause it contains high voltage.When removing a PCB or related component, afterunfastening or changing a wire, be sure to put the wireback in its original position.When you exchange IC and Transistor with a heat sink,apply silicon grease (YG6260M) on the contact sectionof the heat sink. Before applying new silicon grease,remove all the old silicon grease. (Old grease may causedamages to the IC and Transistor.)

•

•

•

•

Fig. 1-2

FUNCTIONOSD HOSD CCUT OFFH.POSIH BLK LH BLK RV. SIZEV. POSIV. LINVS CORRV COMPR.BIASG.BIASB.BIASR.DRVG.DRVB.DRVBRI.CENTBRI.MAXBRI.MIN

NO.0001020304050607080910111213141516293031

NO.3233343536373839404142434445464748

FUNCTIONCONT.CENTCONT.MAXCONT.MINCOL.CENTCOL.MAXCOL.MINTINT CENTSHARP.CENTSHARP.MAXSHARP.MINSUB BIASH.SIZEPARABOLATRAPEZIUMCOR TOPCOR BTMTEST STEREO

2. BASIC ADJUSTMENTS

2-1: CONSTANT VOLTAGE

1.2.3.

Place the set in AV MODE without signal.Connect the digital voltmeter to the TP003.Adjust the VR502 until the digital voltmeter is 130 ± 0.5V.

2-3: CUT OFF

1.2.3.

4.

5.

Place the set in Aging Test for more than 15 minutes.Place the set in AV MODE without signal.Using the remote control, set the brightness andcontrast to normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (02) on the remote control toselect “CUT OFF”.Adjust the Screen Volume until a dim raster is obtained.

2-4: FOCUS

1.2.3.

Receive the monoscope pattern.Turn the Focus Volume fully counterclockwise once.Adjust the Focus Volume until picture is distinct.

2-5: WHITE BALANCE

NOTE: Adjust after performing CUT OFF adjustment.

Place the set in Aging Test for more than 15 minutes.Receive the white 100% signal from the PatternGenerator.Using the adjustment control, set the brightness andcontrast to normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (11) on the remote control toselect "R.BIAS".Using the VOL. UP/DOWN button on the remote control,adjust the R.BIAS.Press the CH. UP/DOWN button on the remote control toselect the "R.DRV", "B.DRV", "G.BIAS" or "B.BIAS".Using the VOL. UP/DOWN button on the remote control,adjust the R.DRV, B.DRV, G.BIAS or B.BIAS.Perform the above adjustments 6 and 7 until the whitecolor is achieved.

1.2.

3.

4.

5.

6.

7.

8.

2-2: AFT

1.2.3.4.

Place the set in Aging Test for more than 15 minutes.Connect the AFC Oscillator 45.75MHz to the TP002.Connect the digital voltmeter to the TP001.Adjust the L205 until the digital voltmeter is 2.3 ± 0.1V.

On-Screen Display Adjustment

1. In the condition of NO indication on the screen.Press the VOL. DOWN button on the set and the Channelbutton (9) on the remote control for more than 2 secondsto appear the adjustment mode on the screen as shownin Fig. 1-1 .

Fig. 1-1

2.

3.

4.

Use the Channel UP/DOWN button or Channel button(0-9) on the remote control to select the options shownin Fig. 1-2 .Press the MENU button on the remote control to endthe adjustments.To display the adjustment screen for TV-A, TV-D, AVand YUV mode, press the TV/AV button on the remotecontrol. Press the VOL.DOWN button on the set andthe channel (9) on the remote control for more than 2seconds.

TV-A

00 OSD H

4:3

10


2-6: TINT

1.2.

3.4.

5.

6.7.

8.9.

10.

11.12.

13.

14.15.

Receive the color bar pattern. (RF Input)Using the remote control, set the brightness, contrast,color and tint to normal position.Connect the oscilloscope to TP024.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (38) on the remote control toselect "TINT".Press the VOL. UP/DOWN button on the remote controluntil the section A1 and A2 becomes as straight line.(Refer to Fig. 2-1)Receive the monoscope pattern. (Audio Video Input)Press the TV/AV button on the remote control to set to theAV mode. Then perform the above adjustments 2~5.Receive the monoscope pattern.Press the TV/AV button on the remote control to set to theYUV mode.Using the remote control, set the brightness, contrast,color and tint to normal position.Connect the oscilloscope to TP024.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (38) on the remote control toselect "TINT".Press the VOL. UP/DOWN button on the remote controluntil the section A1 and A2 becomes as straight line.(Refer to Fig. 2-2)Receive the monoscope pattern.Press the TV/AV button on the remote control to set to theDIGITAL mode.Then perform the above adjustments 2~5.

2-7: COLOR CENT

1.2.

3.4.

5.

6.

7.8.

9.10.

11.12.

13.

14.15.

16.

17.

Receive the color bar pattern. (RF Input)Using the remote control, set the brightness, contrast,color and tint to normal position.Connect the oscilloscope to TP022.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (35) on the remote control toselect "COL.CENT".Adjust the VOLTS RANGE VARIABLE knob of theoscilloscope until the range between white 100% and 0%is set to 5 scales on the screen of the oscilloscope.Press the VOL. UP/DOWN button on the remote controluntil the red color level is adjusted to 105 ± 5% of thewhite level. (Refer to Fig. 2-3)Receive the video color bar pattern. (Audio Video Input)Press the button on the remote control to set to theAV mode. Then perform the above adjustments 2~6.Receive the color bar pattern.Press the TV/AV button on the remote control to set to theYUV mode.Then perform the above adjustments 2~6.Receive the Digital color bar pattern.Press the TV/AV button on the remote control to set to theDIGITAL mode.Using the remote control, set the brightness, contrast,color and tint to normal position.Connect the oscilloscope to TP022.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (35) on the remote control toselect "COL.CENT".Adjust the VOLTS RANGE VARIABLE knob of theoscilloscope until the range between white 100% and 0%is set to 5 scales on the screen of the oscilloscope.Press the VOL. UP/DOWN button on the remote controluntil the red color level is adjusted to 95 ± 5% of thewhite level. (Refer to Fig. 2-4)

D-2

Fig. 2-1

A1 A21 2 3 4 1 2 3

Fig. 2-2A1 A2

1 2 3 4 1

Fig. 2-3

105 %

white 100%

Fig. 2-4

95 %

white 100%


D-3

2-8: OSD POSITION

1.

2.

3.

4.

Receive the monoscope pattern from the PatternGenerator.Using the remote control, set the brightness andcontrast to normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (00) on the remote control toselect "OSD H".Press the VOL. UP/DOWN button on the remote controluntil the difference of A and B becomes minimum. (Refer to Fig. 2-5)

2-15: TRAPEZIUM

1.2.

3.

4.

Receive the crosshatch signal from the Pattern Generator.Using the remote control, set the brightness and contrastto normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (45) on the remote control toselect "TRAPEZIUM".Press the VOL. UP/DOWN button on the remote controluntil both ends of the right and left vertical lines of the 4thlength lines screen become parallel.

2-14: PALABOLA

1.2.

3.

4.

Receive the crosshatch pattern.Using the remote control, set the brightness and contrastto normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (44) on the remote control toselect "PARABOLA".Press the VOL. UP/DOWN button on the remote control,so that the line becomes straight from the outside of theright and left.

2-12: VERTICAL POSITION

1.2.

3.

Receive the monoscope pattern.Using the remote control, set the brightness and contrastto normal position.Adjust the VR401 until the horizontal line becomes fit tothe notch of the shadow mask.(Refer to Fig. 2-6)

Fig. 2-6

Shadow mask

Notch

horizontal line

��

�

2-13: VERTICAL SIZE

1.2.

3.

4.

Receive the monoscope pattern.Using the remote control, set the brightness and contrastto normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (06) on the remote control toselect "V. SIZE".Press the VOL. UP/DOWN button on the remote controluntil the SHIFT quantity of the OVER SCAN on upsideand downside becomes 9± 2%.

2-9: HORIZONTAL POSITION

1.2.

3.

4.

5.6.

Receive the Analog monoscope pattern.Using the remote control, set the brightness and contrastto normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (03) on the remote control toselect “H.POSI”.Press the VOL. UP/DOWN button on the remote controluntil the SHIFT quantity of the OVER SCAN on right andleft becomes minimum.Receive the Digital monoscope pattern.Press the TV/AV button on the remote control to set to theDIGITAL mode.Then perform the above adjustments 2~4.

2-10: HORIZONTAL SIZE

1.2.

3.

4.

Receive the monoscope pattern.Using the remote control, set the brightness andcontrast to normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (43) on the remote control toselect "H.SIZE".Press the VOL. UP/DOWN button on the remote controluntil the SHIFT quantity of the OVER SCAN on the rightand left becomes 10± 3%.

2-11: VERTICAL LINEARITY

Receive the monoscope pattern.Using the remote control, set the brightness, contrast,to normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (08) on the remote control toselect "V.LIN".Press the VOL. UP/DOWN button on the remote controluntil the SHIFT quantity of the OVER SCAN on upsideand downside becomes minimum.

1.2.

3.

4.

Fig. 2-5

TV-A

00 OSD H

4:3

10

A B


2-16: COR TOP/BTM

1.2.3.

4.

5.

6.

7.

Receive the crosshatch signal from the Pattern Generator.Set the screen mode to FULL.Using the remote control, set the brightness and contrastto normal position.Activate the adjustment mode display of Fig. 1-1 and pressthe channel button (46) on the remote control to select"COR. TOP".Press the VOL. UP/DOWN button on the remote controluntil both ends of the vertical lines become parallel.Activate the adjustment mode display of Fig. 1-1 and pressthe channel button (47) on the remote control to select"COR. BTM".Press the VOL. UP/DOWN button on the remote controluntil both ends of the vertical lines of the screen becomeparallel.

2-17: BRIGHT CENT

1.2.3.

4.

5.

6.7.

8.9.

Receive the monoscope pattern. (RF Input)Set the screen mode to FULL.Using the remote control, set the brightness and contrastto normal position.Activate the adjustment mode display of Fig. 1-1 andpress the channel button (29) on the remote control toselect "BRI. CENT".Press the VOL. UP/DOWN button on the remote controluntil the white 10% is starting to be visibleReceive the monoscope pattern. (Audio Video Input)Press the TV/AV button on the remote control to set to theAV mode. Then perform the above adjustments 2~5.Receive the monoscope pattern.Press the TV/AV button on the remote control to set to theYUV mode.Then perform the above adjustments 2~5.

1.2.

3.

4.5.6.

7.8.

2-18: CONTRAST MAX

Receive the color bar pattern. (RF Input)Activate the adjustment mode display of Fig. 1-1 andpress the channel button (33) on the remote controlto select "CONT.MAX".Press the VOL. UP/DOWN button on the remotecontrol until the contrast step No. becomes "95".Receive a broadcast and check if the picture is normal.Receive the color bar pattern. (Audio Video Input)Press the TV/AV button on the remote control to set tothe AV mode. Then perform the above adjustments 2~4.Receive the monoscope pattern.Press the TV/AV button on the remote control to set tothe YUV mode.Then perform the above adjustments 2~4.

2-19: Confirmation of Fixed Value (Step No.)

Please check if the fixed values of each adjustment itemis set correctly referring below.

FUNCTIONOSD CH BLK LH BLK RV.POSIVS CORRV COMPBRI.MAXBRI.MINCONT.CENTCONT.MINCOL.MAXCOL.MINSHARP.CENTSHARP.MAXSHARP.MINSUB BIASTEST STEREO

NO.0104050709103031323436373940414248

RF01020001140365105510

127002763050000

CS01020001140365105510

127002763050000

AV01020001140365105510

127002763050000

DIGITAL01020001140365105010

127002763050000

D-4


D-5

3.

1.

2.

3.

1.

2.

3.

4.

5.

6.

7.

8.

1.

2.

3.

4.5.

Receive the green raster pattern from color bargenerator.Adjust the pair of purity magnets to center thecolor on the screen.Adjust the pair of purity magnets so the color at theends are equally wide.Move the deflection yoke backward (to neck side)slowly, and stop it at the position when the wholescreen is green.Confirm red and blue colors.Adjust the slant of the deflection yoke while watching thescreen, then tighten the fixing screw.

DEFLECTION YOKEDEFLECTION YOKE SCREWMAGNET SCREW

6 POLE MAGNETS4 POLE MAGNETSPURITY MAGNETS

Fig. 3-1

PURITY AND CONVERGENCEADJUSTMENTS

3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)

Turn the unit on and let it warm up for at least 30minutes before performing the following adjustments.Place the CRT surface facing east or west to reduce theterrestrial magnetism.Turn ON the unit and demagnetize with a Degauss Coil.

Adjust after performing adjustments in section 3-1.

Tighten the screw for the magnet. Refer to the adjustedCRT for the position. (Refer to Fig. 3-1)If the deflection yoke and magnet are in one body,untighten the screw for the body.Receive the green raster pattern from the color bargenerator.Slide the deflection yoke until it touches the funnelside of the CRT.Adjust center of screen to green, with red and blue onthe sides, using the pair of purity magnets.Switch the color bar generator from the green rasterpattern to the crosshatch pattern.Combine red and blue of the 3 color crosshatch patternon the center of the screen by adjusting the pair of4 pole magnets.Combine red/blue (magenta) and green by adjustingthe pair of 6 pole magnets.Adjust the crosshatch pattern to change to whiteby repeating steps 6 and 7.

NOTE

NOTE

3-3: STATIC CONVERGENCE

1.

2.

3.

3-4: DYNAMIC CONVERGENCE

Adjust after performing adjustments in section 3-3.

1.

2.

Adjust the differences around the screen by movingthe deflection yoke upward/downward and right/left.(Refer to Fig. 3-2-a)Insert three wedges between the deflection yokeandCRT funnel to fix the deflection yoke.(Refer to Fig. 3-2-b)

R G B

RGB

Fig. 3-2-a

WEDGE WEDGE

WEDGE

WEDGE POSITION

Fig. 3-2-b

R G B

RGB

Receive the crosshatch pattern from the color bargenerator.Combine red and blue of the 3 color crosshatch patternon the center of the screen by adjusting the pair of4 pole magnets.Combine red/blue (magenta) and green by adjusting thepair of 6 pole magnets.

UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT

Adjust after performing adjustments in section 3-2.NOTE

NOTE

ELECTRICAL ADJUSTMENTS4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)

D-6

SPEAKER

CP1001

CD1001

CRT

CP401

VR502

J704 J701 J702 DIG

ITA

L P

CB

CP502

DEGAUSS COIL

L503

OS101

CP101CP801A

S502

S501

CD501AC IN

J801

TP024

TP022

R805

CP802B CP801B

CD801

S801

TV MT PCB

CRT PCB

CD802

FB401

TU

001

VR401

J707J706J705

CP802A

L205W801

TP001

W855

J703

W860

R803

TP002

TP003

CRT

CP804

TROUBLESHOOTING GUIDE

NO POWER

YesIs the voltage at the point (A)in the Figure DC159.4V ?

E-1

Is the voltage at pin Gof Q502 DC5V ?

Yes

No

Broken wire of R501 or short circuiton GND.

Check the rectifying circuit.

Yes

No

Yes

No

Is the voltage at the point (B)in the Figure DC166V ?

Is the voltage at the point (C)in the Figure AC120V ?

Yes

No

Broken wire of L501.

Is the voltage on bothends of S502 AC120V ?

Broken wire of F501.Yes

No

Broken wire of AC cord or checkS502.

Is the voltage at the point (E)in the Figure AC120V ?

Check Q514 and associated circuit.

Check Q502 and associated circuit.

No

T501

5

R540

8A

D

S

G

3

Q514

Q502

IC504

R539 R501

B

D501~D504

L501

C

E

F501

S502

CD501


Is the heater voltage atpin 10 of J801 AC6.4V ?

Is the high voltage ofANODE 27KV~28KV ?

No

NO RASTER

Does the RASTERappear at maximumBRIGHT/CONTRAST ?

Yes

No

Is the voltage of pin 1 ofCP801 DC180V ?

Yes

No

Check the output circuit andassociated circuit.

Check the 180V line.

Yes Yes

No

Contact defects of CRT or CRTSocket.

Check the HEATER circuit.

Yes

No

Is collector voltagesof Q405 DC115V andQ402 DC17.3V ?

Check FB401 and associated circuit.

No

YesIs the waveform at baseof Q405 normal ?

No

YesIs the waveform at pin23 of IC601 normal ?

Check the circuit from pin 23 ofIC601 to Q402.

Check IC601 and associated circuit.

E-2

Broken wire at pin 2 of T401.


NO COLOR

Are the waveform at pins 6,8 and 11 of J801 normal ?

Yes

No

Defect of CRT or contact defectsof J801.

Are the waveform at pins 3,4 and 5 of CP802 normal ?

Yes

No

Check the output circuit andassociated circuit.

Are the waveform atpins 14, 15 and 16 ofIC601 normal ?

Yes

No

Are the waveforms at theinput of Q801~Q805 andQ806 normal ?

Yes

No

Check Q801~Q806 andassociated circuit.

Check IC601 and associated circuit.

Is the pulse of crystalX601 normal ?

No

YesCheck the associated circuit of IC601.

Change X601.

E-3


NO VERTICAL

Is the waveform at pin6 of CP401 normal ?

Yes

No

Check DY.

Is the waveform at pin2 of IC401 normal ?

Yes

No

Check the circuit from pin 2 ofIC401 to CP401.

Is the waveform at pin 5of IC401 normal ?

Yes

No

Is the voltage at pin 6of IC401 25V ?

Yes

No

Check IC401 and check associatedcircuit.

Check the 25V line.

Is the waveform at pin19 of IC601 normal ?

No

Yes

Check the associated circuit of IC601.

Check the circuit from pin 19 ofIC601 to pin 5 of IC401.

E-4


NO SOUND

Yes

Is sound setting appropriate ?

Yes

No

Check speaker.

Is the AUDIO signal atpins 11 and 15 of IC701?

Yes

No

Check IC701 and associated circuit .

Check J701, J703, J706, J707 andat pins 17, 18 of CP001 and

associated circuit.

E-5

No

Yes Check the pins 2, 4 of IC701 andassociated circuit .

Is the waveform at pins 2,4,10 and 12 of IC1001?

Is the AUDIO signal inputat pins 1, 3 , 5 , 6 , 7 , 8 , 9and 13 of IC701 ?

OEC7180A (IC101)No. Pin name I/O Function

1 NC O Not used.

2 NC O Not used.

3 NC O Not used.

4 NC O Not used.

5 NC O Not used.

6 NC O Not used.

7 AFT_S_CURVE I Input terminal of AFT.

8 X-RAY I Input terminal of X-RAY detection.

9 KEY 1 I Main unit key input.

10 KEY 2 I Main unit key input.

11 NC O Not used.

12 NC O Not used.

13 NC O Not used.

14 REMOCON IN I Receive the remote control signal.

15 NC O Not used.

16 NC O Not used.

17 NC O Not used.

18 NC O Not used.

19 NC O Not used.

20 NC O Not used.

21 DIGITAL_SELECT-H O Video sw output.

22 DEGAUSS-H O Degauss control output.

23 STANDBY-L O Output LOW at a television power off.

24 H.CONTROL O Output terminal for H_CTL.

25 PROTECT 0 Output HIGH at turning off a television.

26 DTV_POWER_ON-H O Control of power of DTV.

27 NC O Not used.

28 CNT1 O Audio sw output 1.

29 CNT2 O Audio sw output 2.

30 TV_POWER_ON-H O Output HIGH at a television power off.

31 DTV_RESET O Control of reset of DTV.

32 CHROMA_POWER-H O Control of power of CHROMA.

33 NC O Not used.

34 RESET I Reset will be done when the voltage goes to LOW.

35 XCIN I Connect the clock count crystal. (32kHz)

36 XCOUT O Connect the clock count crystal. (32kHz)

37 VCC - 5V.

38 XIN I Connect the main crystal. (12MHz)

39 XOUT O Connect the main crystal. (12MHz)

40 VSS - Ground.

41 NC O Not used.

42 NC O Not used.

43 CLKSEL I Connect to VCC.

44 OSC IN I Input clock for OSD output.

45 OSC OUT O Output clock for OSD output.

46 NUB - Ground.

47 NC O Not used.

48 NC O Not used.

49 OSD VSS - Ground.

50 S IN I Input terminal of S-Jack connection detection.

IC DESCRIPTION

F-1

OEC7180A (IC101)No. Pin name I/O Function

51 Unused I Not used.


53 OSD VCC - 5V.

54 HLF - Condenser connection for HLT.

55 VHOLD - Condenser connection for V.HOLD.

56 CVIN I Video input terminal for data slicer.

57 NUA - Ground.

58 H SYNC I Input terminal for H-SYNC.

59 V SYNC I Input terminal for V-SYNC.

60 OSD OUT O OSD Blancking output.

61 OSD_BLK_L O Output LOW at OSD Blancking output.

62 B O OSD Color signal blue output.

63 G O OSD Color signal green output.

64 R O OSD Color signal red output.

65 NC O Not used.

66 NC O Not used.

67 NC O Not used.

68 DTV_DATA_OUT O Data output terminal for Serial communication.

69 DTV_DATA_IN I Data input terminal for Serial communication.

70 DTV_CLOCK O Clock output terminal for Serial communication.

71 IIC_CLK O Clock terminal for I2CBUS communication.

72 IIC_DATA I/O Data terminal for I2CBUS communication.

73 IIC_BUS_SW O IIC_BUS sw output.

74 NC O Not used.

75 VOLUME PWM O PWM output of volume control.

76 NC O Not used.

77 NC O Not used.

78 NC O Not used.

79 NC O Not used.

80 NC O Not used.

81 EXT_MUTE O External volume muting output.

82 TV_A_MUTE O Volume muting output.

83 SPDIF_MUTE-H O SPDIF volume muting output.

84 NC O Not used.

85 POWER FAIL I Input for the detection of power interruption.

86 IIC OFF I When input LOW the I2CBUS communication is stopped.


88 AMP VSS - Ground.

89 DTV_CS I Chip select input terminal for Serial communication.


91 Unused O Not used.



94 Unused I/O Not used.

95 Unused I/O Not used.

96 Unused - Not used.

97 Unused O Not used.

98 AMP VCC - 5V.

99 ANALOG VCC - 5V.

100 E0_LEAK I Input terminal of E0-LEAK detection.

IC DESCRIPTION

F-2

SEMICONDUCTOR BASE CONNECTIONSDIODE IC

1N4937-F 11E1-EIC 1N4005-EIC 1SS355 TE-17 LA72700V-TLM-E1SS133T-77 30PRA60-FC 21DQ09MTZJ10B T-77 RM11C-EICMTZJ11B T-77 SB140-EICMTZJ15B T-77MTZJ18B T-77MTZJ3.3B T-77MTZJ3.9B T-77MTZJ33B T-77MTZJ4.7B T-77MTZJ5.6B T-77RS-4FSSR290

LA76327M-B-MPB-E HY5DU561622ETP-D43-C AT24C08AN-10SU-2.7 BA00HC5WF-E2 PST3245NRR8A66953FP LA75676V-S CS4348-CZZR

NJM2283M(TE1) NJM4580V(TE1)NJM2750M(TE1)SN74LV4053APWR

LA7847-E OEC7180A AN17822A K8D3216UTC-PI07 PS2561AL1-1-V(W)

TRANSISTOR

BA33E00WHFP-TR 2SA1371-E (GP) KTA1281_Y KTC4217-Y-BRK(GP) KRA102SRTK2SC2909-R (GP) KTC3199_Y-AT KRA103SRTKKTA1266-AT(Y,GR) KTC3209-Y(GP) KRC102SRTKKTA1271_Y-AT KTC3227_Y-AT KRC103SRTKKTC3198-AT-GR-BRK(GP) KRC104SRTKKTC3203-Y-BRK(GP) KTA1504S_Y_RTK

KTC3875S_Y_RTK

2SD2499(LBOEC1) KTD1691Y STF10NK50Z KTK5132E-RTK/P

1

1 1 1

8

1 1

5

11

11 1

17

EC B EC

BBC

E

E

C B

ECB E

CB

GD S

S

D G

G-1

MICON/CHROMA/DEFLECTION/TUNER/IF/AV SWITCH/SOUND AMP/CRT BLOCK DIAGRAM

33

12

5

USE STEREO IC(MONITOR)IC901 LA72700V-TLM-E

11

26

H-1 H-2

CHROMA IC

IC601 LA76327M-B-MPB-E

1 VIDEO IN1

9 VIDEO IN2

S.VIDEO Y44

30 Y IN

29 V IN

28 U IN

S.VIDEO C40

FRONT-AUDIO LJ706

FRONT-AUDIO RJ707

2

2

AUDIO OUT

J703

AV1_IN

J701

6

4

2

3S-JACKJ702 4

FRONT -VIDEO

J7052

5

YUV_INJ704

2

3

3

2

X6013.579545MHz

35 XTAL 3.58

32 FSC OUTAUDIO SW ICIC701 NJM2750M(TE1)

3.3V,2.5V REG ICIC001 BA33E00WHFP-TR

1

6

VIF/SIF ICIC201 LA75676V-S

42 A TUNER_CVBS

13

5

22

J801

6

11

8

F

7

DY23

19V OUT

H OUT

V-DRIVE ICIC401 LA7847-E

CRTV801

15

16

14

B OUT

G OUT

R OUT

Q802, Q806

BLUE OUTQ803, Q805

Q801, Q804

RED OUT

FB401

25

F

S

HV

Q405Q402

1GREEN OUT

H.DRIVE H.OUT

57OSD_R

MICON ICIC101 OEC7180A

55

63 OSD_G

62 OSD_B

56

64 OSD_R

54 60 OSD OUT1

51

SCL1 50

SDA1

59 V_SYNC

58 H/C_SYNC

71 SCL1

72 SDA1

59HD

60VD

OSD_G

OSD_B

MESSERGE_

REG._IN

AT+5V 7

MICON_DATACP101

IIC_OFF 4

RESET-L

POWER

SDA 3

SCL 2

86IIC_OFF

28 AUDIO CNT1

29 AUDIO CNT2

6

5

EEP ROM IC 8K

IC199

AT24C08AN-10SU-2.7

SCL

SDA

TU001

4 10985

TUNER_I2C_CLOCK 28

DTV_RESET 12

AUDIO OUT R 18

AUDIO OUT L 17

SIF/(2nD_CVBS) 16

Pb OUT (C) 15

Y OUT 14

Pr OUT 13

+3.3V 7

MESSAGE_REG 6

ASIC+1.09V 5

+5V 2

D_P.CON+2.5V 1

6

8

12

SOUND AMP ICIC1001 AN17822A

10SPEAKER R

2

4

SPEAKER L

SP1001

SP10029

51

50

59

60

15

9

13

7

3

11

1

5

8

4

2

6

5

6

3YUV SW ICIC602NJM2283M(TE1)11

8

16

63 56 CVINCVIN

OSD_BLK

TV BLOCKCP001

70SCLK

68IIC_OFF

69IIC_OFF

I2C0CLK 11

27TUNER_I2C_DATA

2C0DATA 10

TX(DTV-MAN) 9

89

RX(DTV-MAN) 8

31DTV_RESET

IF OUT2 25

IF OUT 1 24

IF_AGC 22

19AVCC+9V

43TV-POWER_H 30 TV-POWER

9 141

NC

21 TUNER DIGITAL-L

82 TV_A_MUTE

26 DTV_P.NO_H

25

73 IIC_BUS_SW

1

13

BUS_SW ICIC005 SN74LV4053APWR

1512 2 11

7 AFT(MONI)

NC

NC AFT 21

SPDIF OUT 2014

P.CON+9V

NC

X101

12MHz

38X.IN

39X.OUT

1

OS101

9KEY A

14REMOCON

10KEY B

34

RESET IC IC102 PST3245NR

OUT

1

VOL UP

VOL DOWN

CH DOWN

CH UP

X102

32.768KHz

35XC.IN

36XC.OUT

31P.CON+9V

R. SIGNAL

B. SIGNAL

G. SIGNAL

DEFLECTION SIGNALAUDIO SIGNAL

LUMINANCE SIGNAL

COLOR SIGNAL

VIDEO SIGNAL

DIGITAL BLOCK DIAGRAM

DTV_ ASIC ICIC2401

R8A66953FP

AD

AT

AO

BC

KO

LRC

KO

AC

LK

H-3 H-4

TU

NE

R_1

2C_C

LK28

TU

NE

R_1

2C_D

AT

A27

IF_N

25

IF_P

24

IF_A

GC

22

AF

T1(

740_

INT

)21

SP

DIF

20

AV

CC

+9V

19

AU

DIO

-R18

AU

DIO

-L17

SIF

/2N

D_C

VB

S16

Pb

OU

T(A

FT

0)15

Y O

UT

14

Pr

OU

T13

DT

V_R

ES

ET

12 11

I2C

_DA

TA

10

TX

(SIO

_DA

TA

_OU

T)

9 8 7

MS

G_R

EQ

6

1V05

_D5

5V_D

2

2V5_

D1TV

BLO

CK

CP

2401

3V3_

D

NC

NC

RX

(SIO

_DA

TA

_EN

AB

LE)

AUDIO DAC ICIC2405

CS4348-CZZR

1 2 3 4

8

3 5

1 7

NC

NC

SDA

DQ

13

16

+2.5V +2.5V

256Mbit DDR SDRAM ICIC2402

HY5DU561622ETP-D43-C

OPE AMP ICIC2406

NJM4580V(TE1)

2Mx16 NOR FLASH ICIC2403

K8D3216UTC-PI07

AA

21

MD

16

IF_N

IF_P

IF_A

GC

SIC

LO

SID

AO

PB

OU

T

Y O

UT

PR

OU

T

RE

SE

T_N

+3.

3V

SIO

_CLK

SIO

_DA

TA

_IN

SIO

_DA

TA

_OU

T

SIO

_DA

TA

_EN

AB

LE

+3.

3V

10 74712 6

+5V

83

REGULATOR ICIC2408

BA00HC5WF-E2

143

144

174

178

140

182

186

187

14 155

154

135

153

204

RE

SE

T_N

CLK

IN

159

162

161

158

I2C

_CLK

TU

NE

R_1

2C_D

AT

A

J703

D412

C430

C405

J702

J704J701

C733

C715

C71

4

W12

1

C10

4

R132

R452

C503

C50

2

F501

CP

502 R

500

L501

C52

7

C50

1

C40

8

CP401

D409

C42

6

HS402

CP801A

FB401

T401

R50

2

R542R434

R41

0

Q405

D510C521

C50

7

R501

C50

5

IC401

C51

3

C51

9

R438_1

R541

C50

6

B405B504

C401

C40

2

C40

3

C40

6

C407

C423

C504

C51

2

C51

5C520

C522

C53

4

D40

1

D40

2

D403

D405

D406

D41

0

D41

4

D41

5

D50

7

D511

D516

D523

D52

5

D53

2

FH

501

FH502

Q402

Q505

Q50

8

Q509

Q514

R40

6

R41

3R41

6

R41

8

R420

R422

R426

R427

R42

8

R43

0

R43

7

R44

3

R505

R51

9

R52

0

R525

R526

R53

9

R54

0

R54

4

R546

VR502

W00

3

W00

4

W00

5

W00

7

W01

4

W01

6

W02

1

W854

W82

2

W836

R51

3

R530

R521

D40

7

R408

R41

4

D404

R432

B50

1_1

C425

VR401

R421

C43

2

R522

W82

3

Q503

C42

1

RY501

TH

501

R506

Q507

D52

8

D53

5

R51

0

D508

Q504R54

7

D51

4

T501D506C541

C50

9

R508

R504

R55

2

C55

4

C54

9

IC504

D517

D524

R545

R52

9 D50

9

R543

C51

0

Q50

2

HS501

C508

C516

D515

R507

D53

3

R40

1

C517

C41

8

C417

B402

L40

2

R43

9

L403

B401

R459

C42

0

W80

9

C524

C537

D416

SW105R120SW102

W856

SW101SW103 SW104

D51

3

J705J706J707

R74

6

R74

5

W87

4W156

R603

C44

2

OS

101

D40

8

R44

1

C43

3R

524

W027

C51

8

W873

S50

2S

501

W00

6

R54

9

R122

R118

C10

5

C10

6

R10

3

C11

5

C11

9

C12

3

D10

4

C10

2_1

L101

W11

4

W11

2

X10

2

X101R13

0

W11

3

W85

3

R10

16

C802

L801

R803

R805

CP802BR824

R806

R804

R802

Q803

Q802Q801

D812

D811

D810

D80

3D802D801

S801

J801

CP

804

Q806Q804Q805

R807

CP801B

TP024

TP022

TP023

W12

2

W12

3

W008

W11

1

R10

8

W11

5

W84

5

D53

9

W01

9

C120

W81

3

R528

W052

R40

7

W053

W15

8

W04

8

W04

2

W84

8W

849

R512W106

W16

6

W076

R640

Q611

R411_1

W84

2

D411

W862

W04

5

W04

6

W011

W012

C65

0

C65

3

W86

3

W155

W15

7

C41

3_1

D53

6

D529

D505

D512

D50

4

D50

1

D50

3

D502

W14

2

W04

7

W04

3

W028

W033W036

W022

R515

W09

1

Q501

W084

W087

W16

1

W16

0

W16

2

W159

C62

4

C635

C63

8

Q602

R60

4

R612

R613

R61

6

R61

8

R62

7

X60

1

W81

4

D61

2

R61

9

R622

C61

1

W14

8

CP802A

L60

1

R629R601

C141

W149

R636

W16

4 W16

7 R606

R648

R628

Q607

W16

5

Q603

D611

R645

C63

2

W150

W023

W031W030

R123

R119

D530

C65

2

C61

5

W02

6

TU

001

W147 W086

W146

W097

W130

D004

C02

3

W131W

118

W11

7

R016

D003

R00

6

D00

1

C01

4C

010

CF204

W010

R605

W063

W03

9

W04

0

L005

L004

W074

W02

4

W020

W072

IC1001R1002

CP1001

R10

01

W101

W105

W128

W129

W127

W08

2

C92

7

C91

0

C915C

909

C93

2

C921

C902

C92

0

W884

W051

W055

W062

W08

1

W151

W088

W066W069

W070

W071

W100

W08

9

W108

W094

C02

6

R02

8

CF

203

W13

8

W13

9

W14

0

W14

1

L206

W096

W135

R014

W03

4W103W104

W102

W133

W134

W083

W090W093

W068

W095

W107

R650

C64

9

C64

8R

632

R62

3

L205

CF

201

C20

5

L20

4

W13

7

C00

2

L208

D005 D53

1

W050

R608

R65

4W

120

W11

9

W092

C72

2

W846

C41

0

W018

W02

5

W80

8

W831W824

W82

9

W833

W834

W841

W844

W847

W132

W085

R553R554 W803

W07

7

W07

8

L60

3

L207

L901

C422

C42

7

C535

C90

1

C90

7

Q001

C61

2

CP101

W009

W032

W067

W09

9

W09

8

W14

5

W001

C419

W049

W038

W065

W064

W04

1

W037

CP

001

C00

8

W125

W14

4

B60

1

Q609

W01

7

W075

W08

0

W11

6

W002

W058

W060

W061

W850

W05

6

Q608

W14

3

W86

0W85

9

W86

4

W85

8

W07

3

W054

W12

4

W16

9

W03

5W

171

C438

C51

4

S82

5X

S825Y

TP001

TP002

TP003

D105

R12

4

W838

W881

W818

W88

6

C43

7

W880

W826

W857

W835

R70

5

C11

8_2

C10

1_1

C65

1_1

C60

9_1

C60

3_1

C65

5_1

L00

1_1

C71

7_1

C65

6_1

C412_

1

C43

6_1

C01

2_1

C10

06_1

C10

05_1

W85

5

W801

CD

501

PRINTED CIRCUIT BOARDSTV MT/CRT (INSERTED PARTS)

SOLDER SIDE

I-1 I-2

IF

AFT

+B

RISK OF FIRE- REPLACE AS MARKED.

SE

RV

ICE

FO

RIN

FO

RM

AT

ION

AB

OU

TC

RIT

ICA

LC

OM

PO

NE

NT

SS

EE

INS

IDE

BA

CK

CO

VE

R.

CA

UT

ION

,

AT

TE

NT

ION

INF

OR

MA

TIO

N PO

UR

SE

RV

ICE

DE

SP

IEC

EC

RIT

IQU

EV

OIR

AU

VE

RS

O.

,

CMG117B

CCG080B

DTV2760C-1

Documents

Transcript of DTV2760C-1