LC-32G4U/G4D LC-37G4U/G4D SERVICE MANUAL S44S4LC-37G4U LCD COLOR TELEVISION (Display) LC-32G4U/G4D LC-32G4U/G4D LC-37G4U/G4D MODELS LC-37G4U/G4D 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.
LC-32G4U/G4D LC-37G4U/G4D IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thor- oughly familiar with all safety checks and the servicing guidelines which follow: » Use an AC voltmeter having with 5000 ohm per volt,...
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LC-32G4U/G4D LC-37G4U/G4D PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ë Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. conduite électrique ou une prise de terre branchée à la AVERTISSEMENT terre.
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LC-32G4U/G4D LC-37G4U/G4D Precautions for using lead-free solder 1 Employing lead-free solder "PWBs" 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.
LC-32G4U/G4D LC-37G4U/G4D REMOVING OF MAJOR PARTS LC-32G4U/G4D 1. Remove the terminal covers 1 and 2. 2. Remove the 2 SP terminal rubber covers 3 to disconnect each SP wires. 3. Remove the 2 SP bracket cover mounting screws 4 to detach the SP bracket covers.
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LC-32G4U/G4D LC-37G4U/G4D 8.Remove the Earth Plate and the 13 Shielding Plate mounting screws q to detach the Earth Plate, the Shielding Plate and the wire holder. 9.Remove the 2 top operation section assembly mounting screws w. 10.Remove the FPC. (with ferrite core) 11.
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LC-32G4U/G4D LC-37G4U/G4D 14. Remove the LCD CONT PWB mounting screw y to detach the LCD CONT PWB. 15. Remove the 6 POWER SUPPLY PWB mounting screws u to detach the POWER SUPPLY PWB. 16. Remove the 2 R/C LED PWB mounting screws i to detach the R/C LED PWB.
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LC-32G4U/G4D LC-37G4U/G4D • Precautions in handling the LCD panel 1. Handle the liquid crystal panel in a clean room (Humidity: 50% or more). 2. Be sure to wear an earth wristband. 3. Be careful not to drop and shock the liquid crystal panel.
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LC-32G4U/G4D LC-37G4U/G4D LC-37G4U/G4D 1. Remove the terminal covers 1 and 2. 2. Remove the SP terminal rubber covers 3 to disconnect each SP wires. 3. Remove the 2 SP bracket cover mounting screws 4 to detach the SP bracket covers.
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LC-32G4U/G4D LC-37G4U/G4D 8. Remove the Earth Plate and the 13 Shielding Plate mounting screws q to detach the Earth Plate and the Shielding Plate. 9. Remove the 2 top operation section assembly mounting screws w. 10. Remove the FPC. (with ferrite core) 11.
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LC-32G4U/G4D LC-37G4U/G4D 14. Remove the LCD CONT PWB mounting screw y to detach the LCD CONT PWB. 15. Remove the 6 POWER SUPPLY PWB mounting screws u to detach the POWER SUPPLY PWB. 16. Remove the 2 R/C LED PWB mounting screws i to detach the R/C LED PWB.
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LC-32G4U/G4D LC-37G4U/G4D • Precautions in handling the LCD panel 1. Handle the liquid crystal panel in a clean room (Humidity: 50% or more). 2. Be sure to wear an earth wristband. 3. Be careful not to drop and shock the liquid crystal panel.
LC-32G4U/G4D LC-37G4U/G4D 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.
LC-32G4U/G4D LC-37G4U/G4D 5. Adjustment 5-1.COM BIAS adjustment Shift to the "COM BIAS" item with the cursor UP/DOWN key and select a numeric value with the cursor RIGHT/LEFT key. Changing the numeric value with the cursor UP/DOWN key will make appear the test pattern. Make an adjustment so that the flicker near the center of the screen is minimized.
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LC-32G4U/G4D LC-37G4U/G4D Lamp error detection 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 the lamp error detection feature is activated for some reason, the following will result.
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LC-32G4U/G4D LC-37G4U/G4D •List of process adjustment modes...
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LC-32G4U/G4D LC-37G4U/G4D Process adjustment list 1st level Page Item Setting range Initial value Contents GRAYLEVEL 0~255 COMBIAS 0~255 VLSBIAS 0~255 L ERR RESET Zero clear MODE 50Hz, 60Hz, PC 60Hz PWMCTRL PWMFREQ 0~4095 1289 PWMDUTY1 0~4095 PWMDUTY2 0~4095 PHASEDIF 0~255...
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LC-32G4U/G4D LC-37G4U/G4D 1st level Page Item Setting range Initial value PATTERN PATTERN 1 0~14 PATTERN 2 0~12 PATTERN 3 PATTERN 4 PATTERN R 0~255 PATTERN G 0~255 PATTERN B 0~255 PATTERN A 0~255 R GAMMA L 0~255 G GAMMA L...
LC-32G4U/G4D LC-37G4U/G4D MAJOR IC INFORMATIONS •IC2004 (IXA870WJ) This is a microcomputer monitor. It controls the OSD on the monitor, the panel temperature detected by a thermistor, the temperature parameter setting for the QS driver, the timing for a liquid crystal controller, dimmer control data settings, power on the monitor, and it monitors each power line, decodes the remote control, and the OPC control.
LC-32G4U/G4D LC-32G4U/G4D LC-37G4U/G4D LC-37G4U/G4D BLOCK DIAGRAM System connector Monitor microcomputer Power supply control Remote control Various detection power supply control Gradation power supply buffer Main communication UART FLASH Writing control Various detection Power supply control Receiver Connector Controller Audio connector...
LC-32G4U/G4D LC-37G4U/G4D DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. The voltage of each part is the value on operation of the monitor only. It is measured using a 20 kΩ/V tester. INDICATION OF RESISTOR & CAPACITOR: RESISTOR 1. The unit of resistance “Ω” is omitted.
USA: Contact your nearest SHARP Parts Distributor to order. 3. NO. DE PIECE 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll- in CANADA: Contact SHARP Electronics of Canada Limited Free; 1-800-BE-SHARP Phone (416) 890-2100 MARK: SPARE PARTS-DELIVERY SECTION MARQUE: SECTION LIVRAISON DES PIECES DE RECHANGE Ref.
AC Cord Cable Clamp (Large) (1 pc) Polyethylene Bag (SSAKA0170CEZZ) Buffer Material (Bottom) Buffer Material (Top) (SPAKXA502WJZZ) (SPAKXA502WJZZ) Two dimensions Bar Code Label (TLABKA013TAZZ) Bar Code Label Packing Case (TLABK0001TAZZ) (SPAKCB577WJZZ (LC-32G4U)) (SPAKCB596WJZZ (LC-32G4D)) Joint Packing Case(Bottom) (SPAKCB578WJZZ) Joint (SPAKL0023CEZZ)
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LC-32G4U/G4D LC-37G4U/G4D LC-37G4U/G4D Wrapping Pape (Display Side) (SPAKPA324WJZZ(LC-37G4U)) (SPAKPA394WJZZ(LC-37G4D)) Wrapping Paper (Stand Side) (SPAKPA251WJZZ(LC-37G4U)) (SPAKPA393WJZZ(LC-37G4D)) Buffer Material (Bottom) (SPAKXA465WJZZ(LC-37G4U)) (SPAKXA590WJZZ(LC-37G4D) Packing Material SPAKFA558WJZZ AC Cord Cable Clamp (Large) (1 pc) Polyethylene Bag Wrapping Paper(Speaker)(Right) (SSAKA0170CEZZ) (SPAKPA336WJZZ(LC-37G4U)) (SPAKPA407WJZZ(LC-37G4D)) Buffer Material (Top)