Sharp LC37GD7E Service Manual

Operation manual (42 pages)

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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 ....................................................................................................................................7

OPTION BYTES TABLE WITH SERVICE RELEVANT OPTION BITS .............................................................14

SERVICE MENU L2650 (LCD) ..........................................................................................................................16

SOFTWARE LOADING .....................................................................................................................................17

COMPONENTS CHART ...................................................................................................................................19

TECHNICAL SPECIFICATIONS ........................................................................................................................20

SPARE PARTS LIST .........................................................................................................................................21

TROUBLESHOOTING ......................................................................................................................................55

APPENDIX ........................................................................................................................................................58

SERVICE MANUAL

TELEVISION (Display)

MODEL

CONTENTS

SHARP

CORPORATION

LCD COLOUR

LC37GD7E

230-90433927

Table of Contents

Summary of Contents for Sharp LC37GD7E

Page 1: Table Of Contents
LC37GD7E SERVICE MANUAL 230-90433927 LCD COLOUR TELEVISION (Display) LC37GD7E 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 screws (ﬁ g. 1 and 2). 3. Mount stand for serviceposition. Fig. 1 Fig. 2...
Page 5 REMOVING OF MAJOR PARTS 1. Remove the 4 lock screws , 13 lock screws from the LCD Panel Unit, and detach the LCD Panel Unit. 2. Detach the Reflection/Deflection Sheet, Prism Sheet, Diffusion Sheet, and Diffusion Panel. 3. Remove the 6 lock screws from the Lamp Holder, and detach the Lamp Holder.
Page 6: Wiring Diagram L2650
Wiring diagram L2650...
Page 7: 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 8 ADJUSTMENT PROCEDURES 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. Display adjustment procedure 1.
Page 9 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 10 5.List of process adjustment modes (Display) (Examples) Table of contents of adjustment process mode Page 0...
Page 12 Process adjustment list 1st level Page Item Setting range Initial value Contents CSLEVEL 0~128 COM BIAS 0~1024 ERR STBY L ERR RESET Zero clear PWM CTRL PWM FREQ 0~4095 1289 PWM DUTY 0~4095 OSC FREQ 0~4095 OSC DUTY 0~4095 PMCG MODE PMCG SSC DAT DRV CLK DRV...
Page 13 Monitoring process ERR STBY table Outline: Communication and power failures detected by the monitoring microcomputer are saved to EEPROM, and the final states of the errors can be checked in the monitoring process. Location: Line 3 in page 0 of the monitoring process, ERR STBY field If there is no error, 0 appears.
Page 14: Option Bytes Table With Service Relevant Option Bits
Option Bytes table with service relevant option bits Please do not change others!
Page 15 Option Bytes table with service relevant option bits Please do not change others!
Page 16: Service Menu L2650 (Lcd)
Service menu L2650 (LCD)
Page 17: 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 18 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 19: Components Chart
Components Chart L2650 LC-GD7 Signal Board 89445 Basic Board 89435 Connector Board 89194 IR Receiver/LED 89476 Control Unit Sharp 89477 LCD Panel Kit 89439 LC-37GS7L Tuner/IF 89222 DVB-S Frontend 89189 Remote Control 32534 Sharp GD7 DVB-S 89361...
Page 20: Technical Specifications
Technical speciﬁ cations LC-37GD7E Connections General Jack 3.5 mm Headphone 32-2000 Ohm Art. No. 65482 EXT 4 Mini-DIN Video IN Y/C (S-VHS/Hi 8) Dimensions with tablestand (mm) 917x707x307 EXT 4 (yellow) Video IN CVBS (VHS/8 mm) (WxHxD) Cinch (white/red) Audio IN Dimensions without tablestand (mm) 917x645x108 IEC socket 75 ohms (*5V/80mA) Antenna/cable/DVB-T...
Page 21: Spare Parts List
LCD-Panel-Kit LC-37GS7L SHARP L291-89439.002 Basic-Board P .C.B L2650 37 SHARP L396-89435.081 Signal-Board P .C.B L2650H NIC/DVB-T EU 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. L2650H NIC/DVB-T EU Sharp L396-89445.058 Signal Board complete.
Page 22 G104 Mask dark met. L703-32524 G110 Backcover black L775-89448.002 G112 Cover (Common Interface GD7E) L778-89449.002 G113 Rear Cover SHARP L778-89462.002 32524 89439.002 Front Cabinet (Mask) LCD Panel Kit Dark Met. 37Z LC-37GS7L 32453...
Page 23 89448.002 Backcover black 89435.081...
Page 24 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 25 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 26 Basic Board Art.-No. 89435.081 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 27 Basic Board Art.-No. 89435.081 Item N°. Description List Part N°. Var. CAPACITORS C252 Electrolytic Capacitor 180U M 450V L360-32708 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 28 Basic Board Art.-No. 89435.081 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 29 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 30 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 31 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 32 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 33 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 34 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 35 REF NO. PART NUMBER DESCRIPTION PWB ASSY DUNTKD025VJ05 LCD Control Unit DUNTKD165VJ06 Micro Processor Unit RUNTKA147WJZZ Inverter A Unit RUNTKA148WJZZ Inverter B Unit RUNTKA149WJZZ Inverter A GND Unit RUNTKA150WJZZ Inverter B GND Unit LCDCONTROL UNIT IC4101 VHiBD8133FV-1Y Bd8133Fv-E2 IC4102 VHiNJM4580V-1Y Njm4580V IC4104 RH-iXB332WJZZY...
Page 36 REF NO. PART NUMBER DESCRIPTION D4908 VHDRB521S30-1Y Diode D4909 VHDRB521S30-1Y Diode D4910 VHDRB521S30-1Y Diode 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...
Page 37 REF NO. PART NUMBER DESCRIPTION C4157 VCKYCY1HB102KY 1000p 50V Ceramic C4158 VCKYCY1CF474ZY 0.47 16V Ceramic C4159 RC-KZ0053TAZZY Capacitor C4160 VCEASY1HN106MY 10 50V Electrolytic C4161 RC-KZA047WJZZY Capacitor C4162 RC-KZ0070TAZZY Capacitor C4163 RC-KZA047WJZZY Capacitor C4164 VCEASY1EN227MY 220 25V Electrolytic C4165 RC-KZA110WJZZY Capacitor C4166 RC-KZA047WJZZY Capacitor...
Page 38 REF NO. PART NUMBER DESCRIPTION C4654 VCKYCY1EF104ZY 0.1 25V Ceramic C4655 VCAAPF0JJ107MY 100 6.3V Electrolytic C4656 VCKYCY1EF104ZY 0.1 25V Ceramic C4657 VCAAPC1DJ226MY 22 20V Electrolytic C4658 VCKYCY1EF104ZY 0.1 25V Ceramic C4659 RC-KZ0070TAZZY Capacitor C4660 RC-KZA110WJZZY Capacitor C4661 RC-KZ0070TAZZY Capacitor C4662 RC-KZA110WJZZY Capacitor C4901...
Page 39 REF NO. PART NUMBER DESCRIPTION R4110 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R4111 VRS-CY1JF103JY 10k 1/16W 5% Metal Oxide R4112 VRS-CY1JF153FY 15k 1/16W 1% Metal Oxide R4113 VRS-CY1JF330JY 33 1/16W 5% Metal Oxide R4114 VRS-CY1JF000JY 0 1/16W 5% Metal Oxide R4116 VRS-CY1JF103JY 10k 1/16W 5% Metal Oxide...
Page 40 REF NO. PART NUMBER DESCRIPTION R4237 VRS-CY1JF163FY 16k 1/16W 1% Metal Oxide R4238 VRS-CY1JF511FY 510 1/16W 1% Metal Oxide R4239 VRS-CY1JF244FY 240k 1/16W 1% Metal Oxide R4240 VRS-CY1JF243FY 24k 1/16W 1% Metal Oxide R4241 VRS-TV1JD101JY 100 1/10W 5% Metal Oxide R4243 VRS-CY1JF104JY 100k 1/16W 5% Metal Oxide...
Page 41 REF NO. PART NUMBER DESCRIPTION R4905 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R4907 VRS-CY1JF101JY 100 1/16W 5% Metal Oxide R4909 VRS-CY1JF103JY 10k 1/16W 5% Metal Oxide R4916 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4917 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide R4918 VRS-CY1JF100JY 10 1/16W 5% Metal Oxide...
Page 42 REF NO. PART NUMBER DESCRIPTION P7701 QPLGNA176WJZZY Plug P7703 QPLGNA174WJZZY Plug SC4601 QSOCNA426WJZZY Socket SC4651 QSOCNA222WJZZY Socket SC4652 QSOCNA222WJZZY Socket LUG7702 QLUGHA006WJZZY LUG7703 QLUGHA006WJZZY LUG7704 QLUGHA006WJZZY LUG7705 QLUGHA006WJZZY LUG7706 QLUGHA006WJZZY Micro Processor Unit IC2301 RH-iXB345WJZZQ Hd64F36049Hv IC2302 VHiBD4729G+-1Y Bd4729G-Tr IC2303 VHiBR24L08F-1Y Br24L08F-We2 IC2305...
Page 43 REF NO. PART NUMBER DESCRIPTION C5712 VCEASY1CN107MY 100 16V Electrolytic C5713 VCKYCY1EF104ZY 0.1 25V Ceramic C5727 VCAAPF1DJ826MY 82 20V Electrolytic C5734 VCKYCY1EF104ZY 0.1 25V Ceramic RESISTOR R2302 VRS-CY1JF223JY 22k 1/16W 5% Metal Oxide R2303 VRS-CY1JF223JY 22k 1/16W 5% Metal Oxide R2305 VRS-CY1JF394JY 390k 1/16W 5% Metal Oxide...
Page 44 REF NO. PART NUMBER DESCRIPTION R2375 VRS-CY1JF223JY 22k 1/16W 5% Metal Oxide R2376 VRS-CY1JF103JY 10k 1/16W 5% Metal Oxide R2377 VRS-CY1JF103JY 10k 1/16W 5% Metal Oxide R2380 VRS-CY1JF102JY 1.0k 1/16W 5% Metal Oxide R2381 VRS-CY1JF102JY 1.0k 1/16W 5% Metal Oxide R2382 VRS-CY1JF104JY 100k 1/16W 5% Metal Oxide...
Page 45 REF NO. PART NUMBER DESCRIPTION D7502 VHDDAN217U/-1 DAN217U D7503 VHDDAN217U/-1 DAN217U D7504 VHDDAN217U/-1 DAN217U D7505 VHDDAN217U/-1 DAN217U D7506 VHDDAN217U/-1 DAN217U D7507 VHDDAN217U/-1 DAN217U D7508 VHDDAN217U/-1 DAN217U D7509 VHDDAN217U/-1 DAN217U D7510 VHDDAN217U/-1 DAN217U D7511 VHDRSX30130P1 RSX301LA-30 D7512 VHDRSX30130P1 RSX301LA-30 D7513 VHDRSX30130P1 RSX301LA-30 D7514 VHDRSX30130P1...
Page 46 REF NO. PART NUMBER DESCRIPTION C7536 RC-E1E477HVPZ 470uF 25V ELECTROLYTIC C7537 RC-E1E477HVPZ 470uF 25V ELECTROLYTIC C7538 RC-E1E477HVPZ 470uF 25V ELECTROLYTIC C7539 RC-E1E477HVPZ 470uF 25V ELECTROLYTIC C7540 RC-E1E477HVPZ 470uF 25V ELECTROLYTIC C7541 VCKYTQ1EB475K 4.7uF 25V CERAMIC C7542 VCKYCY1AB225K 2.2uF 10V CERAMIC C7543 VCKYCY1AB225K 2.2uF 10V CERAMIC...
Page 47 REF NO. PART NUMBER DESCRIPTION P7503 QCNCM1821SNEZ 1717823-1 P7504 QCNCM1821SNEZ 1717823-1 P7505 QCNCM1821SNEZ 1717823-1 P7506 QCNCM1828SNEZ B3PS-VH P7507 QCNCM1819SNEZ B12B-PASK-1 P7508 QCNCM1826SNEZ 12PL-FJ INVERTER B UNIT IC7402 VHIBD9766FV-1 BD9766FV TRANSITOR Q7401 VSRSS075P03-1 RSS075P03 Q7402 VSRSS100N03-1 RSS100N03 Q7403 VSRSS075P03-1 RSS075P03 Q7404 VSRSS100N03-1 RSS100N03 Q7405...
Page 48 REF NO. PART NUMBER DESCRIPTION D7421 VHEUDZS8.2B-1 UDZS8.2B D7422 VHEUDZS8.2B-1 UDZS8.2B D7423 VHEUDZS8.2B-1 UDZS8.2B D7424 VHD1SS355//-1 1SS355 TRANSFORMER T7401 RTRNZ1292SNPZ CLT4123 T7402 RTRNZ1292SNPZ CLT4123 T7403 RTRNZ1292SNPZ CLT4123 T7404 RTRNZ1292SNPZ CLT4123 T7405 RTRNZ1292SNPZ CLT4123 T7406 RTRNZ1292SNPZ CLT4123 T7407 RTRNZ1292SNPZ CLT4123 T7408 RTRNZ1292SNPZ CLT4123 T7409...
Page 49 REF NO. PART NUMBER DESCRIPTION C7452 VCCCCY1HH331J 330pF 50V CERAMIC RESISTOR R7401 VRS-CY1JD333F 33K 1/10W R7402 VRS-CY1JD753F 75K 1/10W R7403 VRS-CY1JD000J 0 1/10W R7404 VRS-CY1JD333F 33K 1/10W R7405 VRS-CY1JD753F 75K 1/10W R7406 VRS-CY1JD000J 0 1/10W R7407 VRS-TS2AD000J 0 1/8W R7408 VRS-CY1JD103F 10K 1/10W R7409...
Page 50 REF NO. PART NUMBER DESCRIPTION Q7608 VSUM6K1N///-1 UM6K1N DIODE D7601 VHD1SS355//-1 1SS355 D7602 VHD1SS355//-1 1SS355 D7603 VHD1SS355//-1 1SS355 D7604 VHD1SS355//-1 1SS355 D7605 VHD1SS355//-1 1SS355 D7606 VHD1SS355//-1 1SS355 D7607 VHD1SS355//-1 1SS355 D7608 VHD1SS355//-1 1SS355 D7610 VHDDAN217U/-1 DAN217U D7619 VHDDAN217U/-1 DAN217U CAPACITOR C7601 VCKYCY1CB224K 0.22uF 16V CERAMIC...
Page 51 REF NO. PART NUMBER DESCRIPTION JP7608 VRS-TS2AD000J 0 1/8W JP7609 VRS-TS2AD000J 0 1/8W INVERTER B GND TRANSITOR Q7651 VSUM6K1N///-1 UM6K1N Q7652 VSUM6K1N///-1 UM6K1N Q7653 VSUM6K1N///-1 UM6K1N Q7654 VSUM6K1N///-1 UM6K1N Q7655 VSUM6K1N///-1 UM6K1N Q7656 VSUM6K1N///-1 UM6K1N Q7657 VSUM6K1N///-1 UM6K1N Q7658 VSUM6K1N///-1 UM6K1N THERMISTOR TH7650...
Page 52 REF NO. PART NUMBER DESCRIPTION P7652 QCNCM1821SNEZ 1717823-1 P7653 QCNCM1821SNEZ 1717823-1 P7654 QCNCM1821SNEZ 1717823-1 P7655 QCNCM1841SNEZ SM05B-PASS-TBT JP7650 VRS-TS2AD000J 0 1/8W JP7651 VRS-TS2AD000J 0 1/8W JP7652 VRS-TS2AD000J 0 1/8W JP7653 VRS-TS2AD000J 0 1/8W JP7654 VRS-TS2AD000J 0 1/8W JP7655 VRS-TS2AD000J 0 1/8W JP7656 VRS-TS2AD000J 0 1/8W...
Page 53 CABINET AND MECHANICAL PARTS 1-11 1-2-11 1-2-3 1-22 1-2-10 1-2-9 1-2-11 1-2-4 1-2-4 1-2-11 1-2-8 1-2-2 1-2-7 1-2-11 1-2-6 1-23 1-2-3 1-2-5 1-2-5 1-2-6 1-10 1-2-6 1-2-1 1-2-11 1-2-7 1-24 1-23 1-17 1-22 1-18 1-22 1-2-11 1-16 1-15 1-1-2 1-22 1-1-3 1-22 1-1-1...
Page 54 PARTS LIST REF NO. PART NUMBER DESCRIPTION 37”Wide LCD Panel Unit Ass’y Not Available CANGKA519WJ01 Center Angle Ass’y 1-1-1 Not Available Center Angle 1-1-2 PSHEZA037WJZZ Spacer, x2 1-1-3 PSHEZA038WJZZ Spacer, x2 CCHSMA218WJ01 Chassis Ass’y 1-2-1 B/L Chassis Not Available 1-2-2 LANGKA522WJFW Fixing Metal Bottom 1-2-3...
Page 55: 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. CCKM and D5V line are not defective. Blinking once? To "The backlight does not go on."...
Page 56 TROUBLE SHOOTING TABLE (Continued)
Page 57 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 IC4501. Set PATTERN1 PATTERN3 on the adjustment process menu Check IC4702, IC4902 and their peripheral circuits.
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 79 DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. When the exclusive-use AC adapter is used, the colour bar signal of colour bar generator for service is input to get the normal screen. When the audio is minimized, Ω the voltage value is measured with the 20 k /V tester. WAVEFORM MEASUREMENT CONDITION: 1.

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