LG 32LP1D-UA Service Manual
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LG 32LP1D-UA Service Manual

LG 32LP1D-UA Service Manual

Chassis: al-04da
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LCD TV

SERVICE MANUAL

CHASSIS : AL-04DA
MODEL : 32LP1D-UA
37LP1D-UA
42LP1D-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

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  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : AL-04DA MODEL : 32LP1D-UA 37LP1D-UA 42LP1D-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION..............11 SVC REMOCON ..................13 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................17 WIRING DIAGRAM ..................19 EXPLODED VIEW .................. 20 EXPLODED VIEW PARTS LIST ..............21 REPLACEMENT PARTS LIST ............... 24 SVC. SHEET ....................- 2 -...

  • Page 3: Product Safety

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    4) CATV : 01~135 5) CADTV : 01~135 Input Voltage 1) AC 100 ~ 260V 50/60Hz Market NORTH AMERICA Screen Size 32 inch Wide For 32LP1D-UA 37 inch Wide For 37LP1D-UA 42 inch Wide For 42LP1D-UA Aspect Ratio 16:9 Tuning System...
  • Page 7 5. Optical Characteristics (Condition : EZ-Picture "Daylight) 5-1. For 32LP1D-UA / 37LP1D-UA Item Unit Remark Brightness cd/m Contrast Ratio 500:1 600:1 Luminance Variation Viewing Angle(Left, Right, Up, Down) Degree 5-2. For 42LP1D-UA Item Unit Remark Brightness cd/m Contrast Ratio 500:1...
  • Page 8 59.94 74.25 HDTV 1080I EDID data (HDMI) for 32LP1D-UA EDID data (RGB) for 32LP1D-UA 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F...
  • Page 9 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 7. General spec(Module) 7-1. For 32LP1D-UA Item Unit...
  • Page 10 7-2. For 37LP1D-UA Item Unit Remark Active Screen Size 940.3(diagonal) 37.02 inches Outline Dimension 877(H) x 516.8(V) x 55.5(D) Typ. Pixel Pitch 200 x600 x RGB Pixel Format 1366(H)x768(V) RGB stripe arrangement Color Depth 8bit 16.7 Mbit Luminance ,White cd/m2 Center 1 point Viewing Angle (CR>10) R/L 176(Typ),U/P 176(Typ)

  • Page 11: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Applicability 3. Full assembly process adjustment These specifications are applicable for all LCD TV models with an AL-04DA chassis that are manufactured by the <Precaution> Manufacturing Group of the Display Business Division, or Each PCB assembly must be checked using the check jig set any of its related manufacturers.
  • Page 12 3.2.4. Adjustment method 3.3.3. Manual White Balance Adjustment A) When entering the component, input 100% When adjusting after carrying out zero calibration for Horizontal Color Bar Pattern (HozTV30Bar) of the CA-100, the sensor should be tightly fixed on the supportable 720P mode, and select Component 1 LCD module surface.

  • Page 13: Svc Remocon

    SVC REMOCON FUNTION REAMARK To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function.

  • Page 14: Troubleshooting

    TROUBLESHOOTING No power Check the condition of power Connect the connectors Related connectors. FAIL PASS Check the Measure the power board stand_by voltage : Digital ref. voltage : D_board P1401 5 th pin FAIL Power board CN804 ST_ 6V 1th pin 24V FAIL PASS Replace Power_board...
  • Page 15 No raster Standby Check No power voltage check : Replace D_board (Go to No power) D_board P1401 FAIL PASS 5th 6V PASS Measure Check No power Standby voltage : Replace A_board (Go to No power) A_board P804 7th 6V PASS FAIL PASS Measure...
  • Page 16 No sound Measure Check Sound supply : A_power board trans output: Replace power board A_board P804 #1 18V 18V at power_board FAIL FAIL CN803 #1 PASS Check If A_board 18V is short-circuited. Replace A_board Resistance btween A_board PASS P821 Pin No.2 and 3 infnity? Check output to the Speaker :...

  • Page 17: Block Diagram

    BLOCK DIAGRAM - 17 -...
  • Page 18 BLOCK DIAGRAM DESCRIPTION In this system there are 2 tuners - ATSC/NTSC tuner(TDVS-H701P) and NTSC-only tuner.(TAFM-H103P) So it is impossible to have a digital (main)/digital (sub) PIP. CXA2181Q is the AV switch for the component signals and CXA2069Q is the AV switch for the composite signals. The audio signals which separated by CXA2069 are sent to MSP4440.

  • Page 19: Wiring Diagram

    - 19 -...

  • Page 20: Exploded View

    - 20 -...

  • Page 21: Exploded View Parts List

    CABINET ASSEMBLY, 32LP10 BRAND 3090TKE019 BLACK, FOR DU 3091TKE023G CABINET ASSEMBLY, 32LP1D-UA BRAND 3090TKE019 BLACK, FOR CKD 6304FLP290A LCD(LIQUID CRYSTAL DISPLAY), LC320W01-A6K6 LG PHILPS TFT COLOR WXGA AIODC or 6304FLP181A LCD(LIQUID CRYSTAL DISPLAY), LC320W01-A6K3 LG PHILPS TFT COLOR AI ODC 3809TKE022D...

  • Page 22: Exploded View Parts List

    CABINET ASSEMBLY, 37LP1D-UA BRAND . CABINET ASSY(C/SKD) 6304FLP291A LCD(LIQUID CRYSTAL DISPLAY), LC370W01-C6K1 LG PHILPS TFT COLOR ODC or 6304FLP178A LCD(LIQUID CRYSTAL DISPLAY), LC370W01-C6 LG PHILPS TFT COLOR P6 PLANT, ODC 3809TKE026A BACK COVER ASSEMBLY, 37LP10 . BACK COVER ASSY 3809TKE026D BACK COVER ASSEMBLY, 37LP10 .
  • Page 23 CABINET ASSEMBLY, 42LP10 BRAND 3090TKE023A (UA) 3091TKE031F CABINET ASSEMBLY, 42LP10 BRAND 3090TKE023A (UA-SKD) 6304FLP286A LCD(LIQUID CRYSTAL DISPLAY), LC420W02-B4K4 LG PHILPS TFT COLOR B4K3 REV. or 6304FLP216A LCD(LIQUID CRYSTAL DISPLAY), LC420W02-B4K3 LG PHILPS TFT COLOR LEAD FREE 6304FLP295A LCD(LIQUID CRYSTAL DISPLAY), LC420W02-B6K1 LG PHILPS TFT COLOR B6+STATUS PIN...

  • Page 24: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)
  • Page 25 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) L821 6210TCE001G HH-1M3216-501 CERATEC 3216M C838 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) L823 6210TCE001G "HH-1M3216-501 CERATEC 3216M-32LP1D-UA C840 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD) L826 6210TCE001G HH-1M3216-501 CERATEC 3216M C841 0CE106SF6DC 10UF MVG 16V 20% R/TP(SMD)
  • Page 26 0RH3300D622 330 OHM 1 / 10 W 2012 5.00% L706 6210TCE001G HH-1M3216-501 CERATEC 3216M R122 0RH0000D622 "0 OHM 1 / 10 W 2012 5.00% D-32LP1D-UA L707 6210TCE001G HH-1M3216-501 CERATEC 3216M R123 0RH1000D622 100 OHM 1 / 10 W 2012 5.00%...
  • Page 27 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R240 0RH0822D622 82 OHM 1 / 10 W 2012 5.00% R112 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/T R241 0RH1000D622 100 OHM 1 / 10 W 2012 5.00% R113...
  • Page 28 IC101 3850TVZ003B 11X11(4-1R) BRAND MICOM EAN C1115 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP TU402 6634D00010B TASA-H301P LG INNOTEK 75 OH C1116 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP TU401 6700NF0019B TAFM-H103P LGIT NTSC FS PHO C1117 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C112 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 29 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1163 0CH3105F946 "1UF 16V 80%,-20% F(Y5V) 201" C1326 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1164 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C133...
  • Page 30 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1700 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C309 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C1701 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C310...
  • Page 31 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C431 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C512 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C432 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C513...
  • Page 32 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C687 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C798 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C696 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C799...
  • Page 33 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1103 0CK476FD67A 47UF 3225 10V 20% X5R R/TP C301 0CK103CK51A 0.01UF 1608 50V 10% R/TP B( C1105 0CK476FD67A 47UF 3225 10V 20% X5R R/TP C302...
  • Page 34 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1219 0CH6101K416 100PF 50V 5% NP0 2012 R/TP C1022 0CE226VF6DC 22UF MV 16V 20% R/TP(SMD) S C1224 0CH6101K416 100PF 50V 5% NP0 2012 R/TP C1028...
  • Page 35 IC401 0ICTMLG009C LGDT1102C HD2.3 LG IC SBGA- C701 0CE476SF6DC 47UF MVG 16V 20% SMD R/TP IC504 0ICTMLG013B LGDT1901B LG IC SSOP 24P TR C704 0CE107SF6DC 100UF MVG 16V 20% SMD R/TP IC902 0ICTMLG018B LGDP4411 IEP2 LG IC 208P LQ C705...
  • Page 36 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC1203 0IPMGNS026A LM311MX NATIONAL SEMICONDUC L302 6210TCE001G HH-1M3216-501 CERATEC 3216M IC1303 0IPMGRH001D "BA15BC0FP-E2 ROHM 3P,TO252" L401 6210TCE001G HH-1M3216-501 CERATEC 3216M IC1401...
  • Page 37 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q1101 0TR150400BA CHIP 2SA1504S(ASY) BK KEC - AR111 0RHZTCZ001F RCA SMART 4.7KOHM 1/16 W 5% Q1102 0TR387500AA CHIP 2SC3875S(ALY) BK KEC - AR112...
  • Page 38 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1023 0RH1500D622 150 OHM 1 / 10 W 2012 5.00% R1203 0RH1003D622 100K OHM 1 / 10 W 2012 5.00 R1024 0RH1002D622 10K OHM 1 / 10 W 2012 5.00% R1205...
  • Page 39 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1328 0RH4701D622 4.7K OHM 1 / 10 W 2012 5.00 R353 0RH4701D622 4.7K OHM 1 / 10 W 2012 5.00 R1329 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R354...
  • Page 40 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R629 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R828 0RH4702D622 47K OHM 1 / 10 W 2012 5.00% R630 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R829...
  • Page 41 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L815 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R1153 0RJ0332D677 33 OHM 1/10 W 5% 1608 R/TP R1012 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/T...
  • Page 42 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R134 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/T R248 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP R135 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/T...
  • Page 43 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R339 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R690 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP R340 0RJ0222D677 22 OHM 1/10 W 5% 1608 R/TP...
  • Page 44 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R851 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP X600 6202TST001H SX-1 SUNNY 27MHZ +/- 30 PPM R852 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP...
  • Page 45 DATE: 2005. 06. 13. DATE: 2005. 06. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1235 0RH4701D622 4.7K OHM 1 / 10 W 2012 5.00 SW1205 6600R00001B JTP1289 JEIL 12V DC 1MA VER R1236 0RH0392D622 39 OHM 1 / 10 W 2012 5.00% SW1206 6600R00001B...
  • Page 46 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C3115 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R IC2001 0IMCRFA010A "KA7809R, FAIRCHILD 2P D-PAK" C3116 0CK104CK56A "0.1UF 1608 50V 10% R/TP X7R-32LP1D-UA IC2002 0IMCRSH001A "PQ05DZ1U SHARP 5, SMD TYPE" C3117 0CK104CK56A "0.1UF 1608 50V 10% R/TP X7R-32LP1D-UA IC2003 0IMCRTI035A "TL592B-8DR,LF TEXAS INSTRU"...
  • Page 47 0 OHM 1/10 W 5% 1608 R/TP R3115 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R3116 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R3117 0RJ0000D677 "0 OHM 1/10 W 5% 1608 R/TP-32LP1D-UA R3120 0RJ2001D677 2K OHM 1/10 W 5% 1608 R/TP - 47 -...
  • Page 52 Jun, 2005 P/NO : 38289S0004C Printed in Korea...

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