Toshiba 52XV645U Service Manual
Lcd color television
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Also See for 52XV645U:
- Specifications (2 pages) ,
- Owner's manual (70 pages) ,
- Owner's manual (77 pages)
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Table of Contents
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Summary of Contents for Toshiba 52XV645U
- Page 1 SERVICE MANUAL LCD Color Television 52XV645U Ver. 1.00...
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Page 2: Lead-Free Solder
LEAD-FREE SOLDER This product is manufactured using lead-free solder as a part of a movement within the consumer products industry at large to be environmentally responsible. Lead-free solder must be used in the servicing and repair of this product. WARNING: This product is manufactured using lead free solder. - Page 3 SAFETY INSTRUCTION WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW. Safety Precaution WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER. THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED BEFORE SERVICING THIS CHASSIS. 1.
- Page 4 9. NEVER remodel the product in any way. Remodeling can result in improper operation, malfunction, or electrical leakage and flame, which may be hazardous. 10. Always perform an AC leakage current checking on the exposed metallic parts of the cabinet such as antennas, terminals, screw heads, metal overlays, control shafts and etc. to be sure that the set is safe to operate without any dangerous of electrical shocks before returning the set to the customer.
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Page 5: Safety Instruction
SAFETY INSTRUCTION Product Safety Notice Many electrical and mechanical parts in this chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. -
Page 6: Handling The Lcd Module
SAFETY INSTRUCTION Handling the LCD Module Safety Precaution In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in or drink this fluid. Also, never touch this fluid. Such actions could cause toxicity or skin irritation. If this fluid should enter the mouth, rinse the mouth thoroughly with water. - Page 7 3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not remove the soiling, breathe on the surface and then wipe again. If the panel surface is extremely solied, use a CRT cleaner as a cleaner. Wipe off the panel surface by drop the cleaner on the cloth.
- Page 8 7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an extended period of time. 8. Do not store the LCD module below the temperature conditions described in the specifications. Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage.
- Page 9 PANEL TCON PE0720 KEY PJ730 1 POWER-KEY 2 ADC-IN2 3 GND 4 ADC-IN1 CN730 CN651 CN652 CN860 P860 P861 (OPEN) CN503 1 POWER-KEY 1 VLCD 1 GND 1 VON (5V) 10 GND INV 10 GND INV (OPEN) 2 ADC-IN2 2 VLCD 2 GND 2 GND 9 GND INV...
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Page 10: Power Supply Pcb
T-Con CN651 CN652 LVDS LVDS CN730 CN653 P860 P861 Plug positioning and orientation PJ90 on the power supply PCB may vary slightly from model to model but CN91 pin outs and plug numbers will PJ91 remain the same. CN90 CN30 CN720 CN740 P801A... -
Page 11: Power Supply
Interconnect - Inverter(s) Slave not used on some models 7. NU 6. GND Inv. Master P860 1. 24V 5. BL Det. 0V< CN653 2. 24V CN730 CN652 CN651 4. NU 3. 24V Slave 3. PWM> P861 To Inv. 4. 24V 1. - Page 12 Dead Set No Sound/ No Picture 5 VDC present at pin13 of CN90 on the main module when AC is applied? Does a 3.3 volt DC level appear at pin 2 of CN91 when the on/ Suspect a problem with off button is the power supply module.
- Page 13 Examples If the LCD Control No or distorted Board is available, try it. video If this does not help, replace the LCD display panel. *** Is the Does screen discolored the back light function or have streaks as normally when the unit shown in the example or is turned on? are dark areas...
- Page 14 Backlight Troubleshooting Does the back light function and then turn off or is there a dark horizontal area on the screen? If it is 24 VDC available , try one or both at pins 1 through 5 inverters. If this does not of P860 and 12VDC at help, replace the LCD pins 7 and 8 of CN91...
- Page 15 No Audio Using the remote or the manual keyboard, access the audio menu to assure the speakers are on and the input selection is a known good source. Will this restore audio? Problem solved. Does the power supply generate the audio supply voltages (18 VDC) at pins 3 and 4 of CN90 when the...
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Page 16: Entering To Service Mode
ADJUSTMENT Service Mode Entering to Service Mode 1. Press MUTE button twice on the Remote Control. ↓ 2. Press MUTE button again and hold button down. ↓ Service Mode display 3. While holding the MUTE button, press MENU button on the TV. - Page 17 ADJUSTMENT Service Mode Displaying Adjustment Menu Press MENU button on the TV. Service Mode Press ↑ ↓ Press Adjustment Mode...
- Page 18 ADJUSTMENT Service Mode Key Function in Service Mode The following key entry during display of adjustment menu provides special functions. Test signal selection button (on Remote) Selection of the adjustment items Channel (on TV or Remote) Change of the data value Volume +/- (on TV or Remote) Adjustment menu mode ON/OFF MENU button (on TV)
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Page 19: Setting & Adjusting Data
SETTING & ADJUSTING DATA [ SERVICE MODE ] ADJUSTING ITEMS AND DATA IN SERVICE MODE: Data Item Name of adjustment 40XV645U 46XV645U 52XV645U R-CUT R CUTOFF G-CUT G CUTOFF B-CUT B CUTOFF R-DRV R DRIVE G-DRV G DRIVE B-DRV B DRIVE... - Page 20 ADJUSTMENT Service Mode Adjusting the Data Pressing of VOLUME +/- button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item. Service Mode Setting Panel Option and Model-ID Data Panel Maker OPT4 Model...
- Page 21 ADJUSTMENT Service Mode Flow Chart of Replacing Main Board...
- Page 22 ADJUSTMENT Service Mode INITIALIZATION OF MEMORY DATA After replacing Main board, the following initialization is required. 1. Enter Service Mode. 2. Select "SET-ID" by pressing CHANNEL or CHANNEL button during display of adjustment menu in Service Mode. 3. Change the data to Model ID of the TV set by pressing VOLUME + or 4.
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Page 23: Self-Diagnostic Function
ADJUSTMENT Service Mode Self Diagnostic Function 1. Press "9" button on Remote Control during display of adjustment menu in Service Mode. The diagnosis will begin to check if interface among IC's is executed properly. 2. During diagnosis, the following displays are shown. Explanation Data Format 1 Version information of TV-MICRO... - Page 24 ADJUSTMENT Service Mode Version Check Mode 1. Press "9" button twice on Remote Control during display of adjustment menu in Service Mode. Press cursor button and then the version of main MPU will begin to check. 2. During Version Check, the following displays are shown. Explanation Data Format 1 TV model name...
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Page 25: Led Indication
ADJUSTMENT Service Mode LED Indication The green and red LED lights on the TV indicate the TV's status, as described below: LED1 LED2 PowerOn/Standby OnTimer TV Conditions Combinations Green/Red/ Green/Red/ Orange (G+R) Orange (G+R) Power ON Mode3 OnTimer is set Green Green Program Timer is NOT set... - Page 26 Green Blink Booting (Transition from Standby to Mode18 (3 Times) For Service Mode19 Green Blink IIC BUS Error For Service Mode20 Red Blink Power Protect Error For Service Mode21 Green Blink Fan Stop Error For Service Mode22 Orange Blink Back Light Error For Service Mode23 Orange...
- Page 27 ADJUSTMENT Service Mode Update of SEINE SOFTWARE 1. Turn off power of the TV. 2. Prepare a USB memory storing the update software data. 3. Insert the USB device into the USB terminal at the right side of the TV. 4.