Sharp LC32GD7E Service Manual
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Sharp LC32GD7E Service Manual

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In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
NOTE ON ELECTROSTATICAL SHIELDING .....................................................................................................2
SAFETY WARNINGS / REGULATIONS .............................................................................................................2
PRECAUTIONS FOR USING LEAD-FREE SOLDER .........................................................................................3
REAR PANEL REMOVAL ....................................................................................................................................4
WIRING DIAGRAM L2650 ..................................................................................................................................6
ENTER SERVICE MODE ....................................................................................................................................8
OPTION BYTES TABLE WITH SERVICE RELEVANT OPTION BITS .............................................................15
SERVICE MENU L2650 (LCD) ..........................................................................................................................17
SOFTWARE LOADING .....................................................................................................................................18
COMPONENTS CHART ...................................................................................................................................20
TECHNICAL SPECIFICATIONS ........................................................................................................................21
SPARE PARTS LIST .........................................................................................................................................22
TROUBLESHOOTING ......................................................................................................................................54
APPENDIX ........................................................................................................................................................58
SERVICE MANUAL
TELEVISION (Display)
MODEL
CONTENTS
SHARP
CORPORATION
LCD COLOUR
LC32GD7E
LC32GD7E
230-90432994

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  • Page 1: Table Of Contents

    LC32GD7E SERVICE MANUAL 230-90432994 LCD COLOUR TELEVISION (Display) LC32GD7E MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

  • Page 2: Note On Electrostatical Shielding

    Safety warnings/regulations Note on electrostatic shielding 1. The repair, modifi cation and testing of mains-op- erated electronic devices and their accessories 1. Electrostatically shielded MOS workstations must only be performed by qualifi ed persons. Components sensitive to electrostatic discharge must be handled at workstation with electrostatic shielding.

  • Page 3: Precautions For Using Lead-Free Solder

    Precautions for using lead-free solder 1. Employing lead-free solder „LCD CONT PWB“,“TMDS RX PWB“,“KEY PWB“,“R/C LED PWB“,“MOTOR PWB“,“INV PWB“,“POWER PWB“of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder. Example: Indicates lead-free solder of tin, silver and copper.

  • Page 4: Rear Panel Removal

    Rear panel removal 1. Place the set on a clean and soft base. 2. Open the 4 screws (fi g. 1). 3. Open the 18 screws (fi g. 2). 4. Mount stand for serviceposition. Fig. 1 Fig. 2...
  • Page 5 REMOVING OF MAJOR PARTS 1. Remove the 4 lock screws 1, 4 lock screws 2, 6 lock screws 3 from the LCD Panel Unit. 2. Detach the 4 hooks 4 from the B/L Chassis, and lift off the LCD Panel Unit. 3.

  • Page 6: Wiring Diagram L2650

    Wiring diagram L2650...
  • Page 7 OVERALL WIRING DIAGRAM...

  • Page 8: Enter Service Mode

    Enter service mode Pre-setup position: set is in TV mode 1. Press MENU button on top of the TV set to enter menu „direct control on tv set“ (fi g. 1, pos. 1) 2. Press button „P ^“ until „service“ is shown in menu (fi g. 1, pos. 2) 3.
  • Page 9 LC-32GA7L/GS7L ADJUSTMENT PROCEDURE The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure. 1.
  • Page 10 4. Lamp error detection 4-1. Feature description This liquid-crystal color TV incorporates a lamp error detection feature (lamp error detection) that automatically turns OFF the power for safety under abnormal lamp or lamp circuit conditions. If anything is wrong with the lamp or lamp circuit or when the lamp error detection feature is activated for some reason, the following will result.
  • Page 13 First layer Page Item Setting range Initial value Table of contents CSLEVEL 0 ~ 128 COM BIAS 0 ~ 1024 ERR STBY 0 ~ Z L ERR RESET 0 clear PWM CTRL 0 ~ 7 PWM FREQ 0 ~ 4095 1289 PWM DUTY 0 ~ 4095...
  • Page 14 (*3) Initial value is different depending on mode setting (50 Hz or 60 Hz) and panel size. (PC has the same initial value as with 60 Hz.) 37" 32" 26" 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz QS D1 QS D2 QS D3 QS D4 QS D5...

  • Page 15: Option Bytes Table With Service Relevant Option Bits

    Option Bytes table with service relevant option bits Please do not change others!
  • Page 16 Option Bytes table with service relevant option bits Please do not change others!

  • Page 17: Service Menu L2650 (Lcd)

    Service menu L2650 (LCD)

  • Page 18: Software Loading

    Software loading Update of the main software (operating soft- ware) ...and select the new software version (see fi g. 4). To update the software you need the „Programmer“ (Article number 87933.050) and the update pro- gram „Flasher“. Please act according the following procedure: - Switch off the TV set with the mains switch.
  • Page 19 2. Update of the DVB Bootload- / Application software To update the software you need the „Programmer“ Step 4 (Article number 87933.050) and the update pro- gram „Dvbpromer“. Please act according to steps 1-6 shown in the following pictures: Step 1 Step 5 Step 2 Step 6...

  • Page 20: Components Chart

    Components Chart L2650 Signal Board 89445 Basic Board 89435 Connector Board 89194 IR Receiver/LED 89476 Control Unit Sharp 89477 LCD Panel Kit 89438 LC-32GS7L Tuner/IF 89222 DVB-S Frontend 89189 Remote Control 32534 Sharp GD7 DVB-S 89361...

  • Page 21: Technical Specifications

    Technical specifi cations LC-32GD7E Connections General Jack 3.5 mm Headphone 32-2000 Ohm Art. No. 65481 EXT 4 Mini-DIN Video IN Y/C (S-VHS/Hi 8) Dimensions with tablestand (mm) 795x638x307 EXT 4 (yellow) Video IN CVBS (VHS/8 mm) (WxHxD) Cinch (white/red) Audio IN Dimensions without tablestand (mm) 795x576x108 IEC socket 75 ohms (*5V/80mA) Antenna/cable/DVB-T...

  • Page 22: Spare Parts List

    IR receiver/LED complete Sharp GD7 L396-89476.050 LCD-Panel-Kit LC-32GS7L Sharp. L291-89438.002 Basic Board complete L2650 26 / 32 SH L396-89435.080 Signal Board complete. L2650H NIC/DVB-T EU Sharp L396-89445.058 Signal Board complete. L2650H NIC/DVB-T EU Sharp L396-89445.058 Signal Board complete. L2650H NIC/DVB-T EU Sharp L396-89445.058 Signal Board complete.
  • Page 23 G110 Back cover black Sharp GD7 32Z L775-89447.002 G112 Cover black Common Interface GD7E L778-89449.002 G113 Back cover black 32/37Z Sharp L778-89462.002...
  • Page 25 Retrofit Kit Digital SAT Art.-Nr. 89361.055 Item N°. Description List Part N°. Var. UNITS DVB-S Frontend complete L2650 P .C.B L396-89189.055 OPERATING INSTRUCTIONS Indicating sheet EBA DVB-S (P) Frontend L26XX L240-32237 SET SUPPLEMENT Connecting cable SAT extension 350lg. L169-89261.001 PACKING MATERIAL Protective packing 165x205 für MOS-Baugr.
  • Page 26 Connector Board Art.-No. 89194.050-051 Item N°. Description List Part N°. Var. SOCKETS W1351 Combination jack 9311A L323-32139 W1351 Combination jack 9311F L323-32139.003 W1451 Headphone socket 3,5mm horiz. L323-24591 SMD PARTS D1391 Diode BAS316 SOD323 L351-27952 D1392 Diode BAS316 SOD323 L351-27952 D1491 Diode BAS316 SOD323 L351-27952...
  • Page 27 Basic Board Art.-No. 89435.080 Item N°. Description List Part N°. Var. COILS, SPEAKERS T161 Power transformer standby EF20-5,9 L490-30875 T342 Power transformer 2652.0008C L2650 L490-32512 COMMON MECHANICAL PARTS H101 Fuseholder spring for SI 5x20 L730-20061 H102 Fuseholder spring for SI 5x20 L730-20061 INTEGRATED CIRCUITS I141...
  • Page 28 Basic Board Art.-No. 89435.080 Item N°. Description List Part N°. Var. CAPACITORS C252 Electrolytic Capacitor 180U M 450V L360-32240 C342 Capacitor 10N J 630V L359-31179 RESISTORS Resistor 0R22 J 0411 0W75 L368-31799.010 NTC Resistor 2R5 M 7R5 Y-Type WIDNT L370-31354 R191 NTC Resistor 2R5 M 7R5 Y-Type WIDNT L370-31354.Y07...
  • Page 29 Basic Board Art.-No. 89435.080 Item N°. Description List Part N°. Var. SMD PARTS Diodes D825 3,0A 40V SOD6 Schottky L351-28529 D826 BAS316 SOD323 L351-27952 D827 DIOZD 6V2 J 0W25 SOD323 L351-31062 D828 3,0A 40V SOD6 Schottky L351-28529 D863 BAS316 SOD323 L351-27952 D864 DIOZD 6V2 J 0W25 SOD323...
  • Page 30 Signal Board Art.-No. 89445.058-059 Item N°. Description List Part N°. INTEGRATED CIRCUITS I3001 ICMOS MSP4411K MQFP80 L350-32014 I3006 IC-VR 8V00 J 0A10 SO8 L78L08 L350-26953 I3041 ICMOS 74 AC157 SO16 L350-28896 I3061 TS482IST SO8 mini headphone ampl. L350-31975 I3121 MC33079 SO14 L350-28701 I3401 ICMOS ATMEGA16 TQFP44 Controller...
  • Page 31 Signal Board Art.-No. 89445.058-059 Item N°. Description List Part N°. INTEGRATED CIRCUITS I5461 LM317M TO252 L350-28700 I5471 LM 2903D SO08 L350-21674 I5551 MAX4546CSE SO16 RF/Video Switch L350-28499 I5701 ICMOS STV0700 PQFP128 CI-CONT L350-29865 I5721 ICMOS 74LVC14 SO14 L350-29881 I5771 ICMOS 74LVT245 SO20 L350-27028 I5781 ICMOS 74LVTH373 SO20...
  • Page 32 Signal Board Art.-No. 89445.058-059 Item N°. Description List Part N°. RESISTORS R4243 4x22R J 4x0603 Res. Array L374-30936 R4244 4x22R J 4x0603 Res. Array L374-30936 R4246 4x22R J 4x0603 Res. Array L374-30936 R4247 4x22R J 4x0603 Res. Array L374-30936 R4511 4x22R J 4x0603 Res.
  • Page 33 Signal Board Art.-No. 89445.058-059 Item N°. Description List Part N°. SMD PARTS Diodes D5281 BAS316 SOD323 L351-27952 D5467 1,0A 600V DO-214AC L351-20547 Transistors Q2081 BF799LK L344-17798 Q2084 BC847BW SOT323 L344-27272 Q2086 BC847BW SOT323 L344-27272 Q2088 BC857BW SOT323 L344-28404 Q2091 BF799LK L344-17798 Q2287 BC857BW SOT323...
  • Page 34 Signal Board Art.-No. 89445.058-059 Item N°. Description List Part N°. SMD PARTS Transistors Q3441 BC847BW SOT323 L344-27272 Q3443 BC847BW SOT323 L344-27272 Q3446 BC847BW SOT323 L344-27272 Q3448 BC847BW SOT323 L344-27272 Q3451 BC847BW SOT323 L344-27272 Q3456 BC847BW SOT323 L344-27272 Q3709 BC847BW SOT323 L344-27272 Q3724 BC847BW SOT323...
  • Page 35 Var. SOCKETS W6001 Contact Ledge vert. 6-pol. nat. L326-20762 DIODES D6007 Coupler LED bicolor SMD T677 red/green L353-31002 I6002 Coupler IR receiver GP1UW261RK0F Sharp L353-32616 SMD PARTS D6001 DIOZD 6V2 J 0W25 SOD323 L351-31062 D6002 Diode BAS316 SOD323 L351-27952 D6003...
  • Page 36 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE DUNTKD025VJ04 LCD Control Unit DUNTKD165VJ05 Micro Processor Unit LC32GA7L, LC32GS7L from 2142 sets DUNTKD165VJ02 Micro Processor Unit LC32GS7L 1 to 2141 sets RUNTKA144WJZZ Inverter A Unit RUNTKA145WJZZ Inverter B Unit RUNTKA146WJZZ Inverter GND Unit LCDCONTROL UNIT IC4101 VHiBD8133FV-1Y...
  • Page 37 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE D7701 VHDHSU119//-1Y Diode D7705 VHDHSU119//-1Y Diode PACKAGED CIRCUITS X4501 RCRUAA048WJZZY Crystal FILTER AND COIL FL4651 RFiLNA002WJZZY Filter FL4652 RFiLNA002WJZZY Filter FL4653 RFiLNA002WJZZY Filter FL4654 RFiLNA002WJZZY Filter L4101 RCiLPA296WJZZY Coil L4102 RCiLP0343TAZZY Coil L4103 RCiLP0343TAZZY Coil...
  • Page 38 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE C4163 RC-KZA047WJZZY Capacitor C4164 VCEASY1EN227MY 220 25V Electrolytic C4165 RC-KZA110WJZZY Capacitor C4166 RC-KZA047WJZZY Capacitor C4168 RC-KZA083WJZZY Capacitor C4176 VCKYCY1EF104ZY 0.1 25V Ceramic C4192 VCKYCY1HB152KY 1500p 50V Ceramic C4195 VCKYCY1EF104ZY 0.1 25V Ceramic C4197 VCKYCY1EF104ZY 0.1 25V Ceramic...
  • Page 39 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE C4901 VCKYCY1EF104ZY 0.1 25V Ceramic C4902 VCKYCY1EF104ZY 0.1 25V Ceramic C4903 VCCCCY1HH680JY 68p 50V Ceramic C4904 RC-KZA106WJZZY Capacitor C4905 RC-KZA109WJZZY 10 16V Ceramic C4906 RC-KZA109WJZZY 10 16V Ceramic C4907 VCKYCY1EF104ZY 0.1 25V Ceramic C4908 VCCCCY1HH680JY 68p 50V Ceramic...
  • Page 40 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE R4124 VRS-CY1JF392FY 3.9k 1/16W 1% Metal Oxide R4125 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4126 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4127 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4128 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4129 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide...
  • Page 41 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE R4274 VRS-TV1JD000JY 0 1/10W 5% Metal Oxide R4293 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R4501 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R4502 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R4503 VRS-CY1JF472JY 4.7k 1/16W 5% Metal Oxide R4504 VRS-CH1JF100JY 10 1/16W 5% Metal Oxide...
  • Page 42 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE R4937 VRS-CY1JF514JY 510k 1/16W 5% Metal Oxide R4938 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4939 VRS-CY1JF514JY 510k 1/16W 5% Metal Oxide R4940 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4941 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4942 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide...
  • Page 43 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE IC5703 VHiPQ1CZ21H-1Y Pq1Cz21H2Zp IC5704 VHiBA033FP/-1Y Ba033Fp-E2 TRANSITOR Q2301 VSDTC144EE/-1Y DTC144EE Q2302 VSDTC144EE/-1Y DTC144EE Q2303 VSDTC144EE/-1Y DTC144EE DIODE D5701 VHDSFPB54//2EY Diode PACKAGED CIRCUIT X2301 RCRSC0032TAZZY Crystal FILTER AND COIL FL2301 RFiLZ0169TAZZY Filter L5701 RCiLP0344TAZZY Coil L5702...
  • Page 44 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE R2325 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R2326 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R2327 VRS-CY1JF223JY 22k 1/16W 5% Metal Oxide R2328 VRS-CJ1JF101JY 100 1/16W 5% Metal Oxide R2329 VRS-CY1JF223JY 22k 1/16W 5% Metal Oxide R2330 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide...
  • Page 45 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE FB2304 RBLN-A005WJZZY Frrite bead FB2305 RBLN-A005WJZZY Frrite bead FB2306 RBLN-A005WJZZY Frrite bead FB2307 RBLN-A005WJZZY Frrite bead FB2308 RBLN-A005WJZZY Frrite bead FB3200 RBLN-A005WJZZY Frrite bead FB5701 RBLN-0252TAZZY Frrite bead P2301 QPLGN0057CEZZY Plug P2302 QPLGN0064CEZZY Plug P2303...
  • Page 46 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE C7506 VCKYCY1HB332K 3300pF,50V,CERAMIC C7507 VCKYCY1EB104K 0.1uF,25V,CERAMIC C7508 VCKYCY1CB224K 0.22uF,16V,CERAMIC C7509 VCKYCY1AB225K 2.2uF,10V,CERAMIC C7510 VCKYCY1AB225K 2.2uF,10V,CERAMIC C7511 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7512 VCKYCY1EB104K 0.1uF,25V,CERAMIC C7513 VCKYCY1EB104K 0.1uF,25V,CERAMIC C7514 VCKYCY1EB473K 0.047uF,25V,CERAMIC C7515 RC-E1E477HVPZ 470uF,25V, ELECTROLYTIC C7516 RC-E1E477HVPZ 470uF,25V, ELECTROLYTIC C7517...
  • Page 47 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE R7518 VRS-CY1JD221J 220 1/10W R7519 VRS-CY1JD103J 10K 1/10W R7520 VRS-CY1JD103J 10K 1/10W R7521 VRS-CY1JD393F 39K 1/10W R7522 VRS-CY1JD683F 68K 1/10W R7523 VRS-CY1JD513J 51k 1/10W R7524 VRS-CY1JD513J 51k 1/10W R7525 VRS-CY1JD104F 100K 1/10W R7526 VRS-CY1JD103J 10K 1/10W...
  • Page 48 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE C7408 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7409 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7410 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7411 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7412 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7413 VCKYTV1EB475K 4.7uF,25V,CERAMIC C7414 RC-ECC3H050PY 5pF,5kV,CERAMIC C7415 VCKYCY1HB682K 6800pF,50V,CERAMIC C7416 VCKYTV2AB473K 0.047uF,100V,CERAMIC C7417 RC-ECC3H050PY 5pF,5kV,CERAMIC C7418 VCKYCY1HB682K 6800pF,50V,CERAMIC C7419 VCKYTV2AB473K...
  • Page 49 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE THERMISTOR TH7608 VHH18XH103J03 NCP18XH103J03RB DIODE D7601 VHD1SS355//-1 1SS355 D7602 VHD1SS355//-1 1SS355 D7603 VHD1SS355//-1 1SS355 D7604 VHD1SS355//-1 1SS355 D7605 VHD1SS355//-1 1SS355 D7607 VHD1SS355//-1 1SS355 D7608 VHD1SS355//-1 1SS355 D7609 VHD1SS355//-1 1SS355 D7610 VHD1SS355//-1 1SS355 D7611 VHD1SS355//-1 1SS355...
  • Page 50 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE R4652 VRS-CY1JD155J 1.5M 1/10W R7655 VRS-CY1JD104J 100K 1/10W R7656 VRS-CY1JD102J 1k 1/10W R7657 VRS-CY1JD155J 1.5M 1/10W R7660 VRS-CY1JD104J 100K 1/10W R7661 VRS-CY1JD102J 1k 1/10W R7662 VRS-CY1JD155J 1.5M 1/10W R7665 VRS-CY1JD104J 100K 1/10W R7666 VRS-CY1JD102J 1k 1/10W...
  • Page 51 PWB ASSY REF NO. PART NUMBER DESCRIPTION NOTE KLMP-A069WJZZ Lamp, x9 LANGKA544WJFW CAB Fix Side Angle, x2 LHLDZA613WJKZ Lamp Holder, x2 LX-BZA051WJFN Screw M4X10, x4 PCOVUA059WJZZ Diffusion Panel PSHEPA325WJZZ Diffusion Sheet PSHEPA340WJZZ Prism Sheet 1-10 PSHEPA341WJZZ Reflection/Deflection Sheet 1-11 PSPAZA693WJKZ IC4101 Cool 1-12 QCNW-D529WJQZ...
  • Page 52 CABINET AND MECHANICAL PARTS 1-20 1-2-3 1-11 1-2-10 1-2-9 1-20 1-2-4 1-2-1 1-2-11 1-2-8 1-2-7 1-2-6 1-20 1-2-5 1-2-6 1-10 1-2-7 1-20 1-21 1-22 1-23 1-12 1-13 1-21 1-22 1-20 1-20 1-16 1-15 1-20 1-1-1 1-1-2 1-17 1-20 1-1-3 1-20 1-1-2 1-1-3 1-18...
  • Page 53 PARTS LIST REF. NO. PART NUMBER DESCRIPTION Not Available 32” Wide LCD Panel Unit Ass’y CANGKA518WJ01 Fixing Angle Top Ass’y 1-1-1 Not Available Fixing Angle Top 1-1-2 PSHEZA033WJZZ Spacer (L), x2 1-1-3 PSHEZA034WJZZ Spacer (S), x2 CCHSMA217WJ01 Chassis Ass’y 1-2-1 Not Available B/L Chassis 1-2-2...

  • Page 54: Troubleshooting

    TROUBLE SHOOTING TABLE No picture comes out. Check P2004 (RM) #4pin Check P2004 (RM) #8pin L and H only H and L Check the power unit. Blinking once? (At regular intervals) Check the power unit. Blinking once? To "The backlight does not go on." Blinking twice? Check the panel power supply circuit.
  • Page 55 TROUBLE SHOOTING TABLE (Continued) Data dropout (relating to gray scale) Set PATTERN1 → PATTERN1 on the adjustment process menu Check the connection between SC4651 and SC4652 and check to "2". Is the gray scale pattern displayed correctly? the peripheral circuits of IC4502. Set PATTERN1 →...
  • Page 56 LED Flash Timing Chart in Case of Errors 250ms 1sec 1) Red power LED Remarks Type of error Red power LED behavior (one cycle) Monitor microprocessor pin L_FL_ERR (pin 73): Error at L. Established when repeated continuously 5 times at 1-second intervals (detected only while the backlight is on).
  • Page 57 Error Standby Chart in Monitor Process Outline: Communication errors and power failures that the monitor microprocessor detects are put in memory. The last error status can be therefore reviewed in the monitor process. Location: 3rd line on page 0 of the monitor process: ERR STBY items. "0" is shown if there has been no error.

  • Page 58: Appendix

    Appendix DVB-S Frontend L2650...
  • Page 59 DVB-S Frontend - components side DVB-S Frontend - solder side...
  • Page 60 AV connector board L2650 Var. 050/051...
  • Page 61 Connector board P.C.B 89194A - components side Connector board P.C.B 89194A - solder side...
  • Page 62 Tuner/IF...
  • Page 63 Tuner/IF P.C.B 89222D - components side Tuner/IF P.C.B 89222D - solder side...
  • Page 64 Basicboard L 2650...
  • Page 65 Basicboard L2650 P.C.B 89435C - components side W656 F418 C552 F4,0A L L596 L555 L606 I601 C596 C606 F451 F4,0A L L536 L541 D535 D540 C542 L634 L690 D634 I511 C334 I311 R435 R436 C305 R340 L436 C431 L146 T161 C407 C862 C437...
  • Page 66 Basicboard L2650 P.C.B 89435C - solder side Q536 Q537 Q541 I546 I621 I671 I451 I321 C332 D331 I307 R305 I141 C163 C162 I211 Q199...
  • Page 67 Signalboard L2650...
  • Page 68 Signalboard - components side...
  • Page 69 Signalboard - solder side...
  • Page 70 IR receiver/LED GD7e 89476A - components side...
  • Page 71 IR receiver L2650...
  • Page 72 Control unit Sharp GD7E P.C.B 89477(0) Components side Solder side Q6002 Q6001...
  • Page 73 Operation L2650...
  • Page 74 Block diagram basicboard W101 W102 Mainfilter & Rectification W103 Main in Mainswitch Stand By Active PFC ICE2A0565G MC33262 390V 15V / 24V Resonant Converter L6598 W652 BL supply W651 W450 ext. Control / Prot. Audio supply W661 Audio in Mute Class D audio amplifier W811 MPS7731...
  • Page 75 Block diagram signalboard...
  • Page 76 Service interface TXD2 RXD2 Service Bootload 50mA max. protected Connect 1 100R 200R TXD1 RXD1 R330 680R...
  • Page 77 Signal path audio...
  • Page 78 Signal path video...
  • Page 80 DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
  • Page 93 LC-32GA7L/GS7L PRINTED WIRING BOARD ASSEMBLIES LCD CONTROL Unit (Side-A)
  • Page 94 P7704 LUG7704 LUG7703 P7701 C4926 R4943 C4920 C4914 D4905 R4937 R4931 D4903 D4901 C4934 R4950 Q4915 C4933 R4951 R4953 R4952 R7707 D4908 C4935 R4954 Q4916 R7708 C4932 C4936 C4937 R4956 R4958 Q4917 C4940 R4960 R4957 R4959 D4910 C4941 Q4918 C4939 C4942 FL4651 R4102...
  • Page 95 LCD CONTROL Unit (Side-B)
  • Page 96 C4905 R4923 R4924 Q4903 Q4904 C4902 R4925 C4906 Q4901 Q4902 D7707 D7705 C7725 R7723 C7704 C4904 D7701 C4911 R4928 Q4907 Q4908 R4927 C4907 R4929 C4910 Q4905 Q4906 C4909 R4506 R4610 R4611 R4536 X4501 R4606 R4537 R4535 C4603 FB4603 C4536 C4526 C4605 R4504 C4602...
  • Page 97 MICRO PROCESSOR Unit (Component Parts Side) TL2313 TL2317 TL2321 TL2311 TL2319 TL2323 TL3221 TL2312 TL2325 TL2318 TL2322 TL2310 TL2314 TL2316 TL2320 TL2324 TL5710 TL5708 TL5711 TL5719 TL5712 TL5713 TL5714 TL5715 TL5716 TL5717 TL5718 TP2301 TL5701 TL5702 TL5703 TL5720 TL5704 TL5705 TL5706 TL5707 TL3238...
  • Page 98 INVERTER-1 Unit INVERTER-1 Unit (Component Parts Side) (Wiring Side)
  • Page 99 LC-32GA7L/GS7L INVERTER-2 Unit INVERTER-2 Unit (Component Parts Side) (Wiring Side)
  • Page 100 INVERTER GND Unit (Component Parts Side)

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