AOC L37W861 Service Manual
AOC L37W861 Service Manual

AOC L37W861 Service Manual

37"
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37" LCD TV
Service
Service
Service
Description
Table Of Contents......................................................1
Important Safety Notice...................................................2
Revision List.........................................................3
1. General Specification...............................................4
2. Operating Instructions.........................................5
2.1. The Use Of Remote Control.................................5
2.2. To Use The Menu...............................................6
2.3. How To Connect..............................................12
2.4. Front Panel Control Knobs.................................12
3. Input/Output Specification.......................................13
4. Mechanical Instructions.........................................15
5. Repair Flow Chart ..............................................18
6. PCB Layout ....................................................23
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

TABLE OF CONTENTS

SAFETY NOTICE
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
Page Description
6.1.Main Board.............................................23
6.2.Power Board..........................................25
6.3.Key Board.............................................26
6.4.IR Board................................................26
8. Block Diagram.................................................29
9. Schematic...............................................30
9.1.Main Board..............................................30
9.2.Power Board...........................................45
9.3.Key Board..........................................46
10. Exploded View........................................47
11. BOM List...............................................48
12. Different Parts List..................................70
1
AOC L37W861
Horizontal Frequency
31~60 kHz
Page

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Summary of Contents for AOC L37W861

  • Page 1: Table Of Contents

    37” LCD TV AOC L37W861 Service Service Service Horizontal Frequency 31~60 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……......…..1 6.1.Main Board…………..…………...………..23 Important Safety Notice........……..2 6.2.Power Board……………..………….………...25 Revision List…………………………………………………3 6.3.Key Board………………………..………..26 1. General Specification......………..4 6.4.IR Board…………………………..………..26 2. Operating Instructions…………………….………..5 7.
  • Page 2 37” LCD TV AOC L37W861 Revision List Version Release Date Revision Instructions TPV Model Aug.-13-2008 Initial Release E378AZNKW8AENN Aug.-14-2008 Add New BOM E378AZNSW8A1NN Nov.-28-2008 Add New BOM E37RAZNKW8A52N...
  • Page 3: Important Safety Notice

    AOC L37W861 Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
  • Page 4: General Specification

    37” LCD TV AOC L37W861 1. General Specification Items Specification Panel Type T370XW02 VC00 SZ AUO Driving system TFT-LCD AUO Panel Active Area 16:9 Resolutions 1360 x768 Brightness 450 cd/ LCD Panel Contrast 2500:1 Pixel Pitch 0.6mm x0.6mm Display colors 16.7 million...
  • Page 5: Operating Instructions

    37” LCD TV AOC L37W861 2. Operating Instructions 2.1 The Use of Remote Control POWER PREV CH Press to power ON/OFF (standby) Press to display the previous TV . TV. (Note:1.TV is never completely power off. MTS/SAP unless physically unplugged.
  • Page 6: To Use The Menu

    37” LCD TV AOC L37W861 2.2 To Use the Menus 1 Press the MENU button. 2 Press the button repeatedly to select a menu item. 3 Press the < or > buttons to enter a sub-menu. 4 Press the ENTER or > button to confirm an adjustment or toggle a setting.
  • Page 7 37” LCD TV AOC L37W861 Color–Adjusts the overall color of the picture. (0 ~ 100) Tint–Increases the color level to add more green to skin tones. Decreases the color level to add more purple to skin tones. (R50 ~ G50) Backlight–Adjusts the backlight level (0 ~ 10).
  • Page 8 37” LCD TV AOC L37W861 USING YOUR TV To turn your TV on and off: 1 Make sure that the power cord is connected to your TV and a power outlet. 2 Press the POWER button to turn on your TV. The power indicator LED turns blue.
  • Page 9 37” LCD TV AOC L37W861 For example, if the main channel number is 8, the sub-channel number might be 8-1, 8-2, or 8-3. To select a sub-channel: 1 Press the number buttons for the main channel (for example 8). 2 Press the – button, and then press the sub-channel button (for example 1).
  • Page 10 37” LCD TV AOC L37W861 3 Press the > button to enter the sub-menu, then to highlight Time Set. The Time Set menu opens. 4 Press the button move to the different fields, then press < or >to c hange the settings.
  • Page 11: How To Connect

    37” LCD TV AOC L37W861 2.3 How to Connect HDMI S-Video Composite PC Audio in /15-pin D-Sub HDMI – Connect the primary source for digital video such as a DVD multimedia player or set top box through this all digital connector. The white color band on the rear of the TV indicates this connection.
  • Page 12: Front Panel Control Knobs

    37” LCD TV AOC L37W861 2.4 Front Panel Control Knobs VOL + VOL +: Press to increase the sound volume level. VOL - VOL - : Press to decrease the sound volume level. CH +: Press to select the next higher Program number.
  • Page 13: Input/Output Specification

    37” LCD TV AOC L37W861 3. Input/Output Specification 3.1 RGB Signal input 15 - Pin Color Display Signal Cable Pin No. Description Pin No. Description Red Video Mandatory +5V Supply for PC Bypass Green Video Sync Ground Blue Video SDA(Remote Control)
  • Page 14 37” LCD TV AOC L37W861 3.3 AV/S-Video/Component Video Inputs AV (Composite Video input) Video1 System NTSC Amplitude 1.0 V (p-p), negative sync. Impedance 75 ohm terminated S-Video (Y / C input) S-Video2 System NTSC Y signal amplitude 1.0Vpp (including sync) C signal amplitude 0.286Vpp...
  • Page 15: Mechanical Instructions

    37” LCD TV AOC L37W861 4. Mechanical Instructions 1. Remove the 4 screws to remove the stand. 2. Remove the screws to remove the rear cover. 3. Remove the main board, power board...
  • Page 16 37” LCD TV AOC L37W861 4. Remove the BKT-PCB-holder. 5. Release the speakers. 6. Release key board and IR board. 7. Remove the screws to remove the panel bkt.
  • Page 17 37” LCD TV AOC L37W861 8. Remove the 5 screws to release the panel and bezel.
  • Page 18: Repair Flow Chart

    37 LCD TV AOC L37W861 5. Repair Flow Chart 5.1. No Power (No LED indicator) Plug in power cord and interface Check power cord and board interface Replace F901 or BD901 or C907 Check F901, BD901, C907 Check IC931, Q931...
  • Page 19 37 LCD TV AOC L37W861 5.3. No display (LED indicator green) Check the source Reset source Check LVDS cable Reset LVDS cable Check Q932, IC901, Q901 Replace Q932 or IC901 or Q901 Replace IC951 or Q951 or Q952 Check IC951, Q951, Q952...
  • Page 20 37” LCD TV AOC L37W861 5.4. Abnormal display Check the source Reset source Replace the filter or inductance Check signal filter circuit TV signal Check TV system setup Replace TU201 Check TU201 ReplaceU501, U502, Check U501, U502, HDMI signal U503, U504...
  • Page 21 37” LCD TV AOC L37W861 5.5. No sound Reset source Check the source Replace the filter or inductance Check signal filter circuit Replace the Earphone jack Check Earphone jack SIF signal Check TV system setup Replace TU201 Check TU201 Check U501,...
  • Page 22 37” LCD TV AOC L37W861 5.6. Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Is Button Switch normally? Replace Button Switch Replace Key Pad Board Is Key Pad Board Normally?
  • Page 23: Pcb Layout

    37” LCD TV AOC L37W861 6. PCB Layout 6.1 Main Board...
  • Page 24 37” LCD TV AOC L37W861...
  • Page 25: Power Board

    37” LCD TV AOC L37W861 6.2 Power Board...
  • Page 26: Key Board

    37” LCD TV AOC L37W861 6.3 Key Board 6.4 IR Board...
  • Page 27: White-Balance, Luminance Adjustment

    37” LCD TV AOC L37W861 7. White Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. Before started adjust white balance, please set the Ca210 Channel to 03 Channel and set it’s mode to xyLv mode.
  • Page 28 37” LCD TV AOC L37W861 until the Ca210 show x =272, y =278. 7. Adjust item 7 to check color temperature is saturation or not: Add by 7 steps and then to adjust the item 4 and item 6 to check the color temperature is saturation or not, until is saturation.
  • Page 46: Key Board

    SOURCE-SW MENU VOL- VOL+ P-SW...
  • Page 48: Bom List

    37” LCD TV AOC L37W861 11. BOM List E378AZNKW8AENN Location Part No. Description 001T6021 1 SCREW 033T 465 1 CLIP JIONTER 040T 581 26704 SHIPPING LABEL 044T6002608 1A PAPER BOARD 044T6002608 7A PAPER BOARD 049T 51 1A ERADICATOR 050T 500 1...
  • Page 49 37” LCD TV AOC L37W861 750TVU370W2C02N000 PANEL T370XW02 VC00 SZ AUO A15T0336201 PANEL BRACKET FOR AUO VC&V4 A15T0337201 STAND BRACKET FOR V4&VC A15T0338102 PCB BRACKET A15T0340102 VESA-BKT-TOP A15T0342101 FIX BRACKET FOR V4&VC A34T0580 GM 1L0100 NECK COVER ADPC24200BB1 ADAPTER BOARD...
  • Page 50 37” LCD TV AOC L37W861 Q09T 203 8 705TQ793020 BD901 ASS'Y BD901 093T 50460 39 BRIDGE BU1006A-E3/45 10A/600V BU 0M1T1730 10120 SCREW Q90T0095 2 HEAT SINK 705TQ793021 D902 ASS'Y D902 093T 52 56 DIODE FMN-1106S 10A/600V TO-220 0M1T1730 8120 SCREW...
  • Page 51 37” LCD TV AOC L37W861 R930 061T0805513 RST CHIPR 51 KOHM +-5% 1/8W R961 061T0805513 RST CHIPR 51 KOHM +-5% 1/8W R963 061T0805513 RST CHIPR 51 KOHM +-5% 1/8W R959 061T0805514 RST CHIPR 510KOHM +-5% 1/8W R907 061T0805563 RST CHIPR 56 KOHM +-5% 1/8W...
  • Page 52 37” LCD TV AOC L37W861 ZD933 093T 39S 15 T RLZ15B D952 093T 64S901 T DIODE LS4148 D951 093T 64S901 T DIODE LS4148 D939 093T 64S901 T DIODE LS4148 D938 093T 64S901 T DIODE LS4148 D934 093T 64S901 T DIODE LS4148...
  • Page 53 37” LCD TV AOC L37W861 CN601 033T3802 4B Y CONNECTOR CN404 033T8027 24 CONN W TO B 12P*2 P*2.0 4504-2 R627 061T152M50852T 0.5OHM 5% 2W C726 067T215B221 4P CAP 105C 220UF M 25V 8*12 C720 067T215B221 4P CAP 105C 220UF M 25V 8*12...
  • Page 54 37” LCD TV AOC L37W861 C735 067T 305101 4T CAP 105 100UF M 25V C6A8 067T 305101 6T E.C 100UF M 35V 8*12 C6A1 067T 305220 3T EC 105 22UF M 16V C6A2 067T 305220 3T EC 105 22UF M 16V...
  • Page 55 37” LCD TV AOC L37W861 Q705 057T 763 3 AO4411L SO-8 BY AOS SMT Q401 057T 763 3 AO4411L SO-8 BY AOS SMT Q402 057T 765 1 2SC2412KR Q708 057T 765 1 2SC2412KR Q707 057T 765 1 2SC2412KR Q704 057T 765 1...
  • Page 56 37” LCD TV AOC L37W861 R268 061T0603101 RST CHIPR 100 OHM +-5% 1/10W R269 061T0603101 RST CHIPR 100 OHM +-5% 1/10W R270 061T0603101 RST CHIPR 100 OHM +-5% 1/10W R273 061T0603101 RST CHIPR 100 OHM +-5% 1/10W R283 061T0603101 RST CHIPR 100 OHM +-5% 1/10W...
  • Page 57 37” LCD TV AOC L37W861 R469 061T0603103 RST CHIPR 10KOHM +-5% 1/10W R730 061T0603103 RST CHIPR 10KOHM +-5% 1/10W R729 061T0603103 RST CHIPR 10KOHM +-5% 1/10W R728 061T0603103 RST CHIPR 10KOHM +-5% 1/10W R723 061T0603103 RST CHIPR 10KOHM +-5% 1/10W...
  • Page 58 37” LCD TV AOC L37W861 R225 061T0603330 CHIP 33OHM 1/16W R222 061T0603330 CHIP 33OHM 1/16W R221 061T0603330 CHIP 33OHM 1/16W R4B7 061T0603330 CHIP 33OHM 1/16W R495 061T0603330 CHIP 33OHM 1/16W R494 061T0603330 CHIP 33OHM 1/16W R2D6 061T0603330 CHIP 33OHM 1/16W...
  • Page 59 37” LCD TV AOC L37W861 R441 061T0603472 CHIP 4.7KOHM 1/16W R442 061T0603472 CHIP 4.7KOHM 1/16W R4A8 061T0603472 CHIP 4.7KOHM 1/16W R4A9 061T0603472 CHIP 4.7KOHM 1/16W R293 061T0603472 CHIP 4.7KOHM 1/16W R210 061T0603472 CHIP 4.7KOHM 1/16W R470 061T0603473 CHIP 47KOHM 1/16W...
  • Page 60 37” LCD TV AOC L37W861 R224 061T0603750 9F CHIP 75OHM 1/10W 1% R223 061T0603750 9F CHIP 75OHM 1/10W 1% R502 061T0603752 RST CHIPR 7.5 KOHM +-5% 1/10W R503 061T0603752 RST CHIPR 7.5 KOHM +-5% 1/10W R506 061T0603752 RST CHIPR 7.5 KOHM +-5% 1/10W...
  • Page 61 37” LCD TV AOC L37W861 C470 065T0402104 12 CAP CHIP 0402 0.1UF 16V X7R C471 065T0402104 12 CAP CHIP 0402 0.1UF 16V X7R C472 065T0402104 12 CAP CHIP 0402 0.1UF 16V X7R C473 065T0402104 12 CAP CHIP 0402 0.1UF 16V X7R...
  • Page 62 37” LCD TV AOC L37W861 C454 065T0603102 32 CHIP 1000PF 50V X7R C450 065T0603102 32 CHIP 1000PF 50V X7R C412 065T0603102 32 CHIP 1000PF 50V X7R C410 065T0603102 32 CHIP 1000PF 50V X7R C408 065T0603102 32 CHIP 1000PF 50V X7R...
  • Page 63 37” LCD TV AOC L37W861 C749 065T0603104 12 MLCC 0603 0.1UF K 16V X7R C750 065T0603104 12 MLCC 0603 0.1UF K 16V X7R C756 065T0603104 12 MLCC 0603 0.1UF K 16V X7R C763 065T0603104 12 MLCC 0603 0.1UF K 16V X7R...
  • Page 64 37” LCD TV AOC L37W861 C686 065T0603104 32 CHIP 0.1UF 50V X7R C4C7 065T0603104 32 CHIP 0.1UF 50V X7R C746 065T0603104 32 CHIP 0.1UF 50V X7R C744 065T0603104 32 CHIP 0.1UF 50V X7R C723 065T0603104 32 CHIP 0.1UF 50V X7R...
  • Page 65 37” LCD TV AOC L37W861 C636 065T0603270 31 CHIP 27PF 50V NPO C640 065T0603270 31 CHIP 27PF 50V NPO C641 065T0603270 31 CHIP 27PF 50V NPO C642 065T0603270 31 CHIP 27PF 50V NPO C650 065T0603270 31 CHIP 27PF 50V NPO...
  • Page 66 37” LCD TV AOC L37W861 C710 065T0805475A2K MLCC 0805 CAP 4.7UF 10V X7R C770 065T0805475A2K MLCC 0805 CAP 4.7UF 10V X7R C772 065T0805475A2K MLCC 0805 CAP 4.7UF 10V X7R C703 065T0805475A2K MLCC 0805 CAP 4.7UF 10V X7R C774 065T0805475A2K MLCC 0805 CAP 4.7UF 10V X7R...
  • Page 67 37” LCD TV AOC L37W861 FB235 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608 FB234 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608 FB206 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608 FB203 071T 59B601 EA CHIP BEAD 600OHM 0603 TB1608...
  • Page 68 37” LCD TV AOC L37W861 ZD413 093T 64 37 N V-PORT-0603-100K V05 ZD501 093T 64 37 N V-PORT-0603-100K V05 ZD502 093T 64 37 N V-PORT-0603-100K V05 ZD503 093T 64 37 N V-PORT-0603-100K V05 ZD504 093T 64 37 N V-PORT-0603-100K V05...
  • Page 69 Q40T000297624A IO LABEL Q44T3231 21 41 EVA WASHER Q44T3231 21 42 EVA WASHER Q44T9003 2 CORNER PAPER Q44TL010615 1A 37 TV AOC CARTON BOTTOM Q44TL010615 1A 37 TV AOC CARTON TOP Q44TL014101EPE Q44TL014201EPE Q44TL014301EPE Q44TL014401EPE Q45G 77 5 PE PACKING...
  • Page 70: Main Board

    U402 056G1133103 IC M25P32-VMF6P 32M S0-16 SMTF-U402 100TAZAL001KT1 MCU ASS'Y-056G1133103 CBPF-U411 100TAZAL002KT1 MCU ASS'Y-056G1125701 X Q44GL010615 7A 37 TV AOC CARTON BOTTOM Q44GL010615 7A 37 TV AOC CARTON TOP Q50G 500519 CABLE TIE Q41G7800615B93 WARRANTY CARD FOR MEXICO Q41T7800615A68 MEXICO CENTER LIST...
  • Page 71 37” LCD TV AOC L37W861 R704 061G0603472 RST CHIPR 4.7K OHM +-5% 1/10W C233 065T040210505K CAP CHIP 0402 1UF 6V3 X5R +/-10% SW05 077G 600 1GCJ TACT SWITCH TSPB-2 -NP Q45T 99609107 EPE BAG 750TVUQ0W2511V PANEL T370XW02 V500 TW AUO...

Table of Contents