Service Manual
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website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : LA61A MODEL : 42LB1DR-UA / 42LB1DRA-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : LA61A MODEL : 42LB1DR-UA / 42LB1DRA-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Service Manual
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... AC plug prongs tied together and touch other ohm-meter lead in the Schematic Diagram and Replacement Parts List. Connect 1.5K/10watt resistor in this TV receiver is corresponds to the customer. Any voltage measured must be infinite. General Guidance An isolation Transformer should be used during the servicing of electrical...
... AC plug prongs tied together and touch other ohm-meter lead in the Schematic Diagram and Replacement Parts List. Connect 1.5K/10watt resistor in this TV receiver is corresponds to the customer. Any voltage measured must be infinite. General Guidance An isolation Transformer should be used during the servicing of electrical...
Service Manual
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...308mm FVS 100 program FS 1) Temp : 0 ~ 40 deg 2) Humidity : 10~90 % 3) Temp : -20 ~ 50 deg 4) Humidity : 10~90 % LCD Module Remark (ZE/TE) EU/Non-EU (PAL Market) 6),7) South America Market 7) Except South America NTSC Market (ME) PAL FRANCE NTSC JAPAN... 42.02inch(42LB1R) PAL, 200 PR.(Option) NTSC LPL -6- SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1.General Specification(TV) No Item 1. Receivable Broadcasting System 3. Video input applicable system 2. Input...
...308mm FVS 100 program FS 1) Temp : 0 ~ 40 deg 2) Humidity : 10~90 % 3) Temp : -20 ~ 50 deg 4) Humidity : 10~90 % LCD Module Remark (ZE/TE) EU/Non-EU (PAL Market) 6),7) South America Market 7) Except South America NTSC Market (ME) PAL FRANCE NTSC JAPAN... 42.02inch(42LB1R) PAL, 200 PR.(Option) NTSC LPL -6- SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1.General Specification(TV) No Item 1. Receivable Broadcasting System 3. Video input applicable system 2. Input...
Service Manual
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...output (Composite) 20 Video input (Composite) 21 Common ground (Shield) Signal Level 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.7 V High (9.5 - 12V) - AV Mode Mid (5 - 8V) - TV Mode - 0.7 V 0.7 V High (1 - 3V) - Wide Screen Low (0 - 2V) - Wide Screen Low (0 - 2V) - Signal Level 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.5 Vrms High ...(9.5 - 12V) - Impedance < 1 > 10 < 1 > 10 75 > 10 - 75 75 75 - 75 75 - AV Mode Mid (5 - 8V) - TV Mode - - - 1V including sync 1V including sync - - 10 - Impedance < 1 > 10 < 1 > 10 - > 10 - - - 75 75 - Composite 1V including sync 1V including...
...output (Composite) 20 Video input (Composite) 21 Common ground (Shield) Signal Level 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.7 V High (9.5 - 12V) - AV Mode Mid (5 - 8V) - TV Mode - 0.7 V 0.7 V High (1 - 3V) - Wide Screen Low (0 - 2V) - Wide Screen Low (0 - 2V) - Signal Level 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.5 Vrms High ...(9.5 - 12V) - Impedance < 1 > 10 < 1 > 10 75 > 10 - 75 75 75 - 75 75 - AV Mode Mid (5 - 8V) - TV Mode - - - 1V including sync 1V including sync - - 10 - Impedance < 1 > 10 < 1 > 10 - > 10 - - - 75 75 - Composite 1V including sync 1V including...
Service Manual
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... GND Data Test Pattern 2min 30sec Test Pattern 30sec Connect the RS-232 or USB Cable Connect the MPLAB ICD2 and connector of the PDP TV, PA61A. O Preliminary action is applied to use of isolation transformer will help protect test equipment. (2) Adjustments must be done in the correct order. (3) The adjustments...
... GND Data Test Pattern 2min 30sec Test Pattern 30sec Connect the RS-232 or USB Cable Connect the MPLAB ICD2 and connector of the PDP TV, PA61A. O Preliminary action is applied to use of isolation transformer will help protect test equipment. (2) Adjustments must be done in the correct order. (3) The adjustments...
Service Manual
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... Equipment [ In case of without the VBI Inserter(TES3), a VCR may be set quantity. (2) Enter the EZ adjust menu by pressing Adjust on the TV and run Factory Test Program of PC. [ Program only needs to run once, regardless of with Factory Test Program (2) VBI Inserter (Norpak TES3) -... 6-3. RS-232C (5) After clicking ENTER, the 'opens Private key' window appears and select the Private key applied to number 1 Gemstar and press Enter. (4) TV set as below . Input Signal (2) In case of without VBI Inserter(TES3): VCR uses Cable input and set as below . [ Factory Test S/W must be...
... Equipment [ In case of without the VBI Inserter(TES3), a VCR may be set quantity. (2) Enter the EZ adjust menu by pressing Adjust on the TV and run Factory Test Program of PC. [ Program only needs to run once, regardless of with Factory Test Program (2) VBI Inserter (Norpak TES3) -... 6-3. RS-232C (5) After clicking ENTER, the 'opens Private key' window appears and select the Private key applied to number 1 Gemstar and press Enter. (4) TV set as below . Input Signal (2) In case of without VBI Inserter(TES3): VCR uses Cable input and set as below . [ Factory Test S/W must be...
Service Manual
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.... POWER PCB Assy Voltage Adjustment (Va, Vs Voltage Adjustment) 8-1. Vs DMM + - GND Va GND 5V P805 P804 VR 95 Vs AD Va AD VR90 PDP TV SET (or Digital Board) CN1 P800 1 P803 P802 1 1 Connection Diagram of Device 1) Set devices as below . Name Descrambler Check CableCARD OOB Path FDC_SNR Video Signal...
.... POWER PCB Assy Voltage Adjustment (Va, Vs Voltage Adjustment) 8-1. Vs DMM + - GND Va GND 5V P805 P804 VR 95 Vs AD Va AD VR90 PDP TV SET (or Digital Board) CN1 P800 1 P803 P802 1 1 Connection Diagram of Device 1) Set devices as below . Name Descrambler Check CableCARD OOB Path FDC_SNR Video Signal...
Service Manual
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... 'Ez - Video(UPD)-Set' and enter the adjustment mode by pressing the right key (G ). (3) When enter the adjustment mode, displayed the TV 2CH SPLIT Screen automatic at least 30 minutes by pressing the ADJ KEY. Adjustment of White Balance O Operate the Zero-calibration of RF or Video...12-1. Select '5. O Manual adjustment is also possible by pressing the ADJ Key on the Service Remote Control and adjust. (2) After attaching sensor to the TV AV Input terminal. This time white pattern is displayed. - 16 - And Enter the 'EZ-ADJUST' by the following sequence. (1) HEAT RUN at...
... 'Ez - Video(UPD)-Set' and enter the adjustment mode by pressing the right key (G ). (3) When enter the adjustment mode, displayed the TV 2CH SPLIT Screen automatic at least 30 minutes by pressing the ADJ KEY. Adjustment of White Balance O Operate the Zero-calibration of RF or Video...12-1. Select '5. O Manual adjustment is also possible by pressing the ADJ Key on the Service Remote Control and adjust. (2) After attaching sensor to the TV AV Input terminal. This time white pattern is displayed. - 16 - And Enter the 'EZ-ADJUST' by the following sequence. (1) HEAT RUN at...
Service Manual
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... keys Shortcut keys 22 ENTER To set . To set the delivery condition status after manufacturing the TV set a specific function or complete setting. 23 PIP CH-(OP1) To move the channel in the...screen at the PIP screen. To adjust horizontal line and sub-brightness. Shortcut keys 5 S-CHECK To check TV screen sound easily Shortcut keys 6 ARC To select size of the main screen (Normal, Spectacle, Wide ...To adjust the screen voltage (automatic): key to select a function displayed on the screen. To check TV screen image easily. To use as a red key in the teletext mode 24 PIP CH+(OP2) ...
... keys Shortcut keys 22 ENTER To set . To set the delivery condition status after manufacturing the TV set a specific function or complete setting. 23 PIP CH-(OP1) To move the channel in the...screen at the PIP screen. To adjust horizontal line and sub-brightness. Shortcut keys 5 S-CHECK To check TV screen sound easily Shortcut keys 6 ARC To select size of the main screen (Normal, Spectacle, Wide ...To adjust the screen voltage (automatic): key to select a function displayed on the screen. To check TV screen image easily. To use as a red key in the teletext mode 24 PIP CH+(OP2) ...
Service Manual
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YES Is it 5V #6 ou tp ut of TUNER(TU1302) ? (TV/CATV mode does not display) Replace th e TUNER(TU1302) - 28 - NO Replace th e TUNER(TU1302) . • DCR RF MODE(Detailed) 1. YES Is n ormal #16 o utput ...(TU1302) ? Check f ollo w 1-1. YES Is it 5V #12 ou tp ut of TUNER(TU1302) ? YES Is it 33V #8 o utp ut of D/ W MODE when you e xecution TV/DTV mo de ? YES Is it 33V #9 o utp ut ofTUNER(TU1302) ? Execu tion PIP or D/W mo de...
YES Is it 5V #6 ou tp ut of TUNER(TU1302) ? (TV/CATV mode does not display) Replace th e TUNER(TU1302) - 28 - NO Replace th e TUNER(TU1302) . • DCR RF MODE(Detailed) 1. YES Is n ormal #16 o utput ...(TU1302) ? Check f ollo w 1-1. YES Is it 5V #12 ou tp ut of TUNER(TU1302) ? YES Is it 33V #8 o utp ut of D/ W MODE when you e xecution TV/DTV mo de ? YES Is it 33V #9 o utp ut ofTUNER(TU1302) ? Execu tion PIP or D/W mo de...
Service Manual
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... cab le Is n ormal o utpu of D/W MODE? • DCR DVR RF MODE 1. Is it 9V #42 of CXA2069(IC101) ? FIG1 - 29 - Digita l Output Y(10bit),C(10bit),H/V,FID Is it 9V #42 of CXA2069(IC101) ? FIG1 FIG1 FIG2 (TV/CATV mode does not display) Is no rmal the su b of FMS6400(IC704)? Digita l Output Y(10bit...
... cab le Is n ormal o utpu of D/W MODE? • DCR DVR RF MODE 1. Is it 9V #42 of CXA2069(IC101) ? FIG1 - 29 - Digita l Output Y(10bit),C(10bit),H/V,FID Is it 9V #42 of CXA2069(IC101) ? FIG1 FIG1 FIG2 (TV/CATV mode does not display) Is no rmal the su b of FMS6400(IC704)? Digita l Output Y(10bit...
Service Manual
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... Y 5 Check C PLD (IC301) V-Sync, H-Sync O utput #95(VD), #96(HD) Y 6 Check C Y2309 (IC203) REF(#1), CLKA4(#15) 1 : _Check HDCP Error _Retr y po wer off and on (TV or STB/DVD...) N Check HDCP Power Pin (IC604), MST3361(IC603) IIC(#69,#70) 2 Vid eo is same (abo ve) Power o ff and on... (TV or S TB/DVD...) _Check MST3361(IC603) HDCP IIC line (#69,#70) SCL : SDA : Freq. : 50KHz~400KHz 2 : _Check EDID Download 3 : _ MST3361(IC603) inputs (RX0C-,RX0C+) : (RX1C-,...
... Y 5 Check C PLD (IC301) V-Sync, H-Sync O utput #95(VD), #96(HD) Y 6 Check C Y2309 (IC203) REF(#1), CLKA4(#15) 1 : _Check HDCP Error _Retr y po wer off and on (TV or STB/DVD...) N Check HDCP Power Pin (IC604), MST3361(IC603) IIC(#69,#70) 2 Vid eo is same (abo ve) Power o ff and on... (TV or S TB/DVD...) _Check MST3361(IC603) HDCP IIC line (#69,#70) SCL : SDA : Freq. : 50KHz~400KHz 2 : _Check EDID Download 3 : _ MST3361(IC603) inputs (RX0C-,RX0C+) : (RX1C-,...
Service Manual
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NO Replace PIC18F1220 ( IC1103 ) and Re- YES Re- download PIC18F1220(IC1103 ) Normal? download No Video ? • Power On-Off repetition(Automatically) Symptom : TV set po wers on ( LED :White ) and off ( LED :R ed ) repeatedl y of its elf. ( No video ) Check X1100 (10MHz) Normal? YES Check CPL D LED and Redownload - 37 -
NO Replace PIC18F1220 ( IC1103 ) and Re- YES Re- download PIC18F1220(IC1103 ) Normal? download No Video ? • Power On-Off repetition(Automatically) Symptom : TV set po wers on ( LED :White ) and off ( LED :R ed ) repeatedl y of its elf. ( No video ) Check X1100 (10MHz) Normal? YES Check CPL D LED and Redownload - 37 -
Service Manual
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YES 5V MNT(P1604 #6) is 5V HIGH ? NO Replace A/V boa rd or digital bo ard Replace p ower board Norm al? • Protect Mode Symptom : When TV set powers on, LED i s blin ki ng in secon ds. NO Check A/V bo ard Mic om NO Check A/V bo ard Mic om Norm al? NO ... board Norm al? No Replace Fans and recheck - 38 - And po wer off(LED is red) Check Fa ns Fan(P1606), upper /sid e ( 50" : 1EA, 42" : No FAN ) Fan op erate norm ally ? Check P1603 (power) Power lin es and GND sh ort?
YES 5V MNT(P1604 #6) is 5V HIGH ? NO Replace A/V boa rd or digital bo ard Replace p ower board Norm al? • Protect Mode Symptom : When TV set powers on, LED i s blin ki ng in secon ds. NO Check A/V bo ard Mic om NO Check A/V bo ard Mic om Norm al? NO ... board Norm al? No Replace Fans and recheck - 38 - And po wer off(LED is red) Check Fa ns Fan(P1606), upper /sid e ( 50" : 1EA, 42" : No FAN ) Fan op erate norm ally ? Check P1603 (power) Power lin es and GND sh ort?
Service Manual
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... again. encrypted analog and digital content. (The DCR must not receive RF signal via a STB or accessory RF modulator.) This will eliminate basic TV circuitry as a possible problem. 4. Verify RF from Cable System Tap: The installer can pull up the User Interface screen, the technician should look... referred to reset the DCR) then try another CableCARD. a. When inserting cable card push carefully but firmly until you feel the card click into a DCR TV( Host) to enable premium services, also called "Card" and "Point of the DCR and reconnecting it (to as MMI screen) within 5 - 7 ...
... again. encrypted analog and digital content. (The DCR must not receive RF signal via a STB or accessory RF modulator.) This will eliminate basic TV circuitry as a possible problem. 4. Verify RF from Cable System Tap: The installer can pull up the User Interface screen, the technician should look... referred to reset the DCR) then try another CableCARD. a. When inserting cable card push carefully but firmly until you feel the card click into a DCR TV( Host) to enable premium services, also called "Card" and "Point of the DCR and reconnecting it (to as MMI screen) within 5 - 7 ...
Service Manual
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...- The MMI screens should check the status of copy protection directive. a. Cabl eCARD Mfg ALL - usually involving either item 2a or 3b above status in LG DCR TV. - 40 - com, 1-847- 941- 8828) VicePresident, Zenith R& D center. If the cable company dispatcher (head end personnel) has completely checked their... before copy protected programming can leave a box in the customer's home until the customer resolves the issue with a or more other DCR TVs at the customer's home. SNR( Signal to the Host before it was purchased or The customer should start by contacting the CE manufacturer ...
...- The MMI screens should check the status of copy protection directive. a. Cabl eCARD Mfg ALL - usually involving either item 2a or 3b above status in LG DCR TV. - 40 - com, 1-847- 941- 8828) VicePresident, Zenith R& D center. If the cable company dispatcher (head end personnel) has completely checked their... before copy protected programming can leave a box in the customer's home until the customer resolves the issue with a or more other DCR TVs at the customer's home. SNR( Signal to the Host before it was purchased or The customer should start by contacting the CE manufacturer ...
Service Manual
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- 43 - • TV RF NO Sound NT Tun er AT/NT Tuner SIF SIF Main Audi o Process or (MSP4450K) L/R Buffer (MC33078) I2S ADC (CS5331A) I2S PWM Modulator (NSP2100A) AMP (TAS5122) Front Speaker Monitor Out I2S HD-2 SPDIF System CPLD (EPM570T144) SPDIF Out (Optical )
- 43 - • TV RF NO Sound NT Tun er AT/NT Tuner SIF SIF Main Audi o Process or (MSP4450K) L/R Buffer (MC33078) I2S ADC (CS5331A) I2S PWM Modulator (NSP2100A) AMP (TAS5122) Front Speaker Monitor Out I2S HD-2 SPDIF System CPLD (EPM570T144) SPDIF Out (Optical )
