Related Manuals for Insignia NS-LCD32
Summary of Contents for Insignia NS-LCD32
- Page 1 LCD TELEVISION C u s t o m e r # : N S - L C D 3 2 F a c t o r y # : L C - 3 2 H A 3 7...
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Page 2: Table Of Contents
CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………………… Method of software upgrading……………….…….……………………………………….……. Working principle analysis of the unit……………………………….………….…………. Block diagram…………………………………..………………………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………………………. Identification criteria for the bright spot and dark spot of the LCD screen………….. Troubleshooting guide ………………………………………………………………..…… Schematic diagram…………………………………………………………………………... -
Page 3: Safety Precautions
Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety precautions 1. Instructions Be sure to switch off the power supply before replacing or welding any components inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production process!): a) Do not touch here and there by hand at will;... - Page 4 would be unable to work and no way to get it repaired. If the connection wires, connectors or components fixed by the thernotropic glue need to disengage when service, please soak the thermotropic glue into the alcohol and then pull them out in case of damage.
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Page 5: Alignment Instructions
Alignment instructions 1. Test equipment PM5515 (video signal generator) MK8258 (YUV, VGA signal generator) CA210 (white balancer) 2. The alignment flow chart (see below figure) Check DDC and FLASH To produce signal board on the line All testing Auto correction Connect with central signal source, then check each function of TV such as station missing, analog control etc., check the output of headphone and speaker Input AV/SVIDEO signal, then check each function of all the terminals... - Page 6 “VOL-“ and “VOL+” to adjust. Press “MENU” exit to the level one factory menu; press “EXIT” to exit from the factory menu at any situation. Note: channel switch isn’t available at adjustment menu, only after return to level one factory menu, you can switch channel.
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Page 7: Trouble Shooting
640 X 480 37.861 72.809 31.5 VESA 640 X 480 37.5 31.5 VESA 640 X 480 43.269 85.008 VESA 800 X 600 35.156 56.25 VESA 800 X 600 37.879 60.317 VESA 800 X 600 48.077 72.188 VESA 800 X 600 46.875 49.5 VESA... - Page 8 shaped bright spots voltage transmission line, neon lamp etc. Maybe there is interference between antenna and power supply line. Please try to separate them in a longer distance. Maybe the shielded-layer of signal wire is not connected properly to the connector. There appear streaks or light color Check if interfered by other equipment and if interfered on the screen...
- Page 9 Symptoms Possible cause “outside the receivable scope) not correctly identified and VGA format is beyond the specified scope. Remote control cannot work Check if the batteries are installed in the reverse order. properly Check if the battery is effective. Check the distance or angle from the monitor. Check if there is any obstruct between the remote control and the TV set.
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Page 10: Method Of Software Upgrading
Method of software upgrading 1. Connect computer serial port and TV parallel port with serial wire 665.D0002-645. 2. Open iDev.exe 3. Click , enter the setting interface. Set Serial Port to the current COM port, set the Baud Rate to 1152000, Image Path to the path of the new software. - Page 11 5. Turn on the TV, the software begins to be written. 6. After the software written, Press the power key (local keypad) and holding for several second to force power off TV set, 7. Turn on the TV again and enter the factory menu initialization setting.
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Page 12: Working Principle Analysis Of The Unit
Working principle analysis of the unit 1. NTSC signal flow: Antenna reception NTSC signal send to the integrative tuner TDQDU4-508A, which contains HF and IF amplifier circuit and video decoding circuit. It is controlled by main IC ZR39760 (integrate CPU) through I2C bus. The NTSC signal via frequency tuning, HF amplification, IF amplification, system switching and decoding, output video signal TV-CVBS of 1Vpp and sound IF signal (SIF). -
Page 13: Block Diagram
Block diagram... -
Page 14: Ic Block Diagram
IC block diagram 1. ZR39760... - Page 15 2. MST9883 MST9883 is a Triple Video A/D Converter with Clamps & Pixel Clock Synthesizer. The triple ADC support 12 - 110 MHz Sampling Rate. It integrated 5-bit pixel clock phase adjustment for precise sample timing control. Its Output support 4:2:2 Format Mode and it can Pin Compatible with AD9883A.
- Page 17 Pin configuration of MST9883: Pin descriptions of MST9883: 54: Red analog input 48: Green analog input 43: Blue analog input 49: Sync on Green analog input 38: External Clamp Input 30: Horizontal SYNC Input 31: Vertical SYNC Input 29: Hold PLL Frequency, do not track HSYNC 56: Serial Interface clock 57: Serial Interface data pin 55: Serial interface address pin...
- Page 18 26,27,34,35: PLL Power 11, 22, 23, 69,78,79: Digital Output Power 1,10,20,21,24,25,28,32,36,40,41,44,47,50,53,60,61,63,68,80:Ground 3. R2S15903SP R2S15903SP is an audio signal processor. It has MUTE and Volume/Tone control. It can support 5 input selector. Pin descriptions of R2S15903SP: 5, 28: AV OUT INPUT L/R 2, 31: other channels 17, 18:I2C SDA/SCL 32: Power Supply...
- Page 19 4. RS15102 RS15102 is the high effective D type of power amplifier. The output power can reach 20W (10% THD+N) with 8- speakers, +18V power supply, eliminating the need for heat sinks. Pin description: 1: audio-out, left audio output 15: audio-out, right audio output 11: audio-in, left audio input 5: audio-in, right audio input 14: mute1...
- Page 20 5. M52797SP AV switch with I2C bus control Pin description: VCC 9V VIDEO OUT 2, 4 AV2 L R IN 19, 21 L R OUT AV2 VIDEO IN AV CVBS OUT TV-CVBS IN TUNER_IN 5, 7 Y Pr Pb1 L R IN 22, 24 TV L R IN 8, 10 Y Pr Pb2 L R IN 11, 12...
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Page 21: Wiring Diagram
Wiring diagram... -
Page 22: Identification Criteria For The Bright Spot And Dark Spot Of The Lcd Screen
Identification criteria for the bright spot and dark spot of the LCD screen Quantity allowed Distance between two spots Category Criteria 15" 20" 22" 30" 40" 15" 20" 22" 30" 40" One single spot Bright 15mm spot neighboring spots Total No. 15mm One single spot... -
Page 23: Troubleshooting Guide
Troubleshooting guide Begin Check if XP1 9# on the main board is 3.3V, Turn on the TV? if it’s 0V, check the power supply of the power board. Check if the pin3 of XP1 on the main board A green indicator is high level(+5V)? if not, check the power lights? board and NP2. - Page 24 (2) no picture, no sound No picture, no sound Check the color of indicator light Blue If XP1 9# is 3.3V? Check power Check the output voltage of board sockets XP1, XV2 No sound No picture Power board problem Refer to (3) checking Refer to (4) checking procedure procedure...
- Page 25 (4) with sound but no picture With sound but no picture Display OSD MENU? Display LOGO? Check if the crystal in data processing board starts, If there is no picture DDR clock and DDR SDRAM are normal? in all channels? Check N100 Refer to (6), (7), (8), (9), (10),...
- Page 26 (6) NTSC channel no picture Check if pin4 of TUN1 output signals? Check if CB154 outputs Check TUN1 power supply and signals? the peripheral circuit. Check N100 periphery circuit (7) ATSC channel no picture Check if pin20/21 of TUN1 output signals? Check if the crystal is Check TUN1 power supply and normal? If output signal?
- Page 27 Troubleshooting guide of power supply board a. No power supply No power supply Check if X501 FU501 is Does AC voltage at C502 properly inserted? Does DC voltage at C514 (300~385V) Check D501, R513, D502 Check if the 15V DC of Check N503 or peripheral N503 (pin12) circuit...
- Page 39 APPENDIX-A: Main assembly Model Part name LC-32HA37 Key board 667.26HA37-05 IR receiver board 667.26HA37-09 Interface board 667.26HA37-29 Digital processing board 667.26HA37-69 Power board 667.32HA37-20 Remote control 301.D26HA37-12A Panel 335.32017-00...
- Page 40 603-L32HA37-10 Ver.1.0...