Related Manuals for Sanyo LCD-42XR2
Summary of Contents for Sanyo LCD-42XR2
- Page 1 FILE NO. SERVICE MANUAL LCD-42XR2 PRODUCT CODE No. PRODUCT CODE No. LCD TV 1 682 342 80: PAL/SECAM/NTSC REFERENCE No.:SM0915069...
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Page 2: Table Of Contents
CONTENTS Safety Precautions………………………………………………………………………..… Alignment instructions. ………………………………….…………………………….… Software upgrade method…………………………………………….…………………… Working principle analysis of the unit……………………..……………………….…… Block diagram……………………………………………………………………………… IC block diagram……………………………………………………………..……………. Wiring diagram……………………………………………………………………………..… Troubleshooting………………………………………………………..…………….……. Schematic diagram………………………………………………………………………….. APPENDIX-A: Assembly list APPENDIX-B: Exploded view... -
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. 2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling.
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Page 5: Alignment Instructions
Alignment instructions (LC-37T25& LC-42T17&LC-47T17) 1. Test equipment Digital multimeter, signal generator (54200) VG849 (HDMI signal generator) CA210 (White balancer) 2. The alignment flow chart (see below Fig.1) Write N105, N403, N607, N70, N606 To produce main board, TV board and other board Check the TV board Check accessories and then packing Check the MAIN board... - Page 6 the indicator of the infrared receive board is red light. b. Press the POWER button; the indicator change to blue light, the LED1 of main board is flicker of slow. c. Write program to N102 d. Check if various channels are normal. 3.2 The TV board adjustment a.
- Page 7 283). n. Repeat the L and M step, until the third and the seventh level color coordinate (270, 283). 3.5.3 high definition channel a. Input the 720P SMPTE COLOR BAR signal (TIMING: 976, PATTERN: 984). b. Brightness to 50, contrast to 50. c.
- Page 8 e. Enter the color temperature setup menu. Adjust the RED OFFSET, GREEN OFFSET, BLUE OFFSET, until the third level color coordinate (284, 299). g. Adjust the RED GAIN, GREEN GAIN, BLUE GAIN, until the seventh level color coordinate (284, 299). h.
- Page 9 table 2, check the picture and sound. Table 2 Component format signal H-frequency(kHz) V-frequency(Hz) signal 15.735 SDTV 480i 15.625 SDTV 576i 31.47 SDTV 483p 45.00 HDTV 720p 33.75 HDTV 1080i 28.13 HDTV 1080i 67.50 HDTV 1080p 56.25 HDTV 1080p 4.5 HDMI terminal Input the DHMI signal source (VG849 signal generator), separate input format signal in table of table 3, check the picture and sound.
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Page 10: Software Upgrade Method
Method of software upgrading Steps of software upgrading are as follows: 1. Select a serial connection wire and a VGA connection wire and then connect them by means of a patch panel; 2. Use a serial wire to connect the PC to the patch panel and set TV set to off state; Open the software upgrade file holder and double click FlashUpgrader.exe (window 2000/XP/NT) -
Page 11: Working Principle Analysis Of The Unit
Working principle analysis of the unit The unit has two MCU, the main MCU is PW218 (N601): it is used to control all the chips’ working status on the main board (including image processing, channel switch, sound processing, image display etc.), sub CPU, OSD, searching channels, image effect adjustment, buttons control, infrared remote control etc.;... - Page 12 Chief functions: High definition 1080P LCD 16:9 wide screen Support several kinds of HDTV wide voltage range, low standby power consumption (less than 1W) One group of D-SUB, S-VSH (Y/C), RS232, AVOUT, HEADPHONE, HDMI, two groups of YPbPr/YCbCr, AV.
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Page 13: Block Diagram
Block diagram YPbPr1 PC Audio HDMI Audio RF Audio TPA3008D2 LA72700V Tuner STERO/SAP decoder SRS processor MEGAL8 M62494 RF Video NJW1109 N400 Earphone M52797SP R2S15900 socket of Audio and video YPbPr2 with switch switch AV Audio Out Flash YPbPr1 PW2300 V port PW2300 YPbPr2... -
Page 14: Ic Block Diagram
IC block diagram 1. AD9880 and AD9398 AD9880 have HDMI digital and analog terminal of working frequency 165Hz, it support 1080P (non-interlaced scanning) and UXGA (1600 x 1200/60Hz) video format, also it support eight audio channel of 192KHz. AD9398 without analog terminal. Internal Block Diagram... - Page 15 PIN configuration AD9880 (AD9398) PINS FUNCTIONS Name Function Pin Name Function GGE(0-7) Converter output RXC+ DVI input 12-19 GBE(0-7) Converter output DDC_CLK HDCP Slave Serial Port Data Clock 92-99 GRE(0-7) Converter output DDC_DATA HDCP Slave Serial Port Data 20, 21 MCLK Control clock output HDCP Master Serial Port Data Clock...
- Page 16 I2S_SD Bus audio data output SDA_1 Serial Port Data I/O RX0- DVI input G_FIEL0 Odd/Even Field Output RX0+ DVI input G_VS VSYNC Output Clock RX1- DVI input G_VHS Sync Green Slicer Output RX1+ DVI input G_HS HSYNC Output Clock RX2- DVI input G_DE Data Enable...
- Page 17 I2Cbus clock AV2 blue input VGA-R1 VGA(red) CVBS_1 TV composite video signal input VGA-G1 VGA(greed) S-VHS brightness signal input VGA-SOG1 VGA(greed sync signal) CVBS_SOG1 TV composite video signal greed sync input VGA-B1 VGA(blue) S-VHS chrominance signal input VGA_H VGA(H-sync signal) GVBI Vertical blanking blank VGA_V...
- Page 18 4. TPA3008 TPA3008 is double channel 10W stereo D class audio amplifier. Internal Block Diagram PINS FUNCTION Name Function Name Function SHUTDOWN Shut down control signal LOUTN Negative audio output for left channel RINP Positive audio input for right channel LOUTP Positive audio output for left channel V2P5...
- Page 19 sent during blanking intervals. At a maximum dual pixel rate of 112MHz, LVDS data line speed is 672Mbps, providing a total throughput of 5.38Gbps (672 Megabytes per second). Two other modes are also supported. 24-bit color data (single pixel) can be clocked into the transmitter at a maximum rate of 170MHz.
- Page 20 Pin Diagram 6. M62494 (SRS 3D Stereo + SRS 3D Mono processor) M62494 has SRS 3D STEREO and SRS 3D MONO. There are three modes, those are SRS 3D stereo SRS 3D mono and bypass. Each mode can be set by terminals. Pin Description Name Description...
- Page 21 Internal Block Diagram...
- Page 22 7. L72700 Internal Block Diagram Pin description Name Description Name Description PISIF Sound R OUT Right channel of audio output input I2C bus LOUT Left channel of audio output I2C clock 9V supply power...
- Page 23 8. R2SI5900SP Internal Block Diagram...
- Page 24 PIN description 2, 27 right/left channel of audio 3, 26 HDMI(right/left channel of audio) 4, 25 VGA(right/left channel of audio) 5, 24 YpbPr1(right/left channel of audio) 11, 19 output the power amplifier(right/left channel of audio) 9. M52797D Internal Block Diagram...
- Page 25 Pin description Name Description Name Description HD2_L Audio input HD2_R Audio input AV1_L Audio input AV1_R Audio input AV2_L Audio input AV2_R Audio input TV_L Audio input TV_R Audio input Left audio channel output Right audio channel output 10.CM2006 Internal Block Diagram Pin description Name Description...
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Page 26: Wiring Diagram
Wiring diagram 782-LYT25-0100 RS-232C CNF1 HDMI LCD PANEL KEYS BOARD VGA AUDIO IN X3 (12) X603 REMOTE RECEIVER SPEAKER X500 X604 X602 X603 YPBPR 782-LYT25-5500 YPBPR AUDION IN SUPPLY POWER S-VIDEO AV IN AV OUT TUNER HEADPHONE AC220... -
Page 27: Troubleshooting
Trouble shooting 1. Fault clearance Before servicing please check to find the possible causes of the troubles according to the table below. 1.1 Antenna (signal): Picture is out of focus or jumping Bad status in signal receiving Poor signal Check if there are failures with the electrical connector or the antenna. - Page 28 signal types. Picture too bright and there is Check if the contrast setting is too high. distortion in the brightest area Possibly the output quality of DVD broadcaster is set too high. It maybe also due to improper terminal connection of the video frequency signal in a certain position of the system.
- Page 29 2. 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 ≤5 ≤2 ≤5 ≤2 ≤3 spot Bright ≥15mm spot...
- Page 30 3. Troubleshooting guide 3.1 No raster, no picture and no sound Check if the indicator is light Check supply Check 5V-STBY power D3.3V Abnormal Normal Cut off between the power board and signal processing, Short circuit the pin 1 (STANDBY) Check N501 and check the 5V-STB of X604 to 5V, then check the...
- Page 31 2.With sound but no picture: With sound but no picture Display LOGO? Check if no image for all other channels Check if the X3, signal wave? Check if the white Check program balance of the factory menu is normal? Unfix X3 and X4, turn on the unit display the white screen Normal Abnormal...
- Page 32 3.With picture but no sound. With picture but no sound If there is output from X700 of sound power amplification board Check if input signal in pin 2 of sound Sound box damaged power amplification Sound power amp. or other peripheral circuit Measure if the sound input of the have problem.
- Page 33 5. High frequency board overhaul flow 5.1 with picture but no sound Check if other channel is normal Check if the earphone is normal Check the connection cable Normal Check if the sound channel Check if the connection of N400 is normal cable and power cable is speaker normal...
- Page 34 5.2 A certain channel without picture of TV/AV YPBPR Check if the VGA and HDMI has same problem Check the main board Check the connection cable and signal source is normal Normal YPBPR channel Check if the X600 socket is Check if the supply power normal (5v, 9v and 12v) is normal...
- Page 40 analog board...
- Page 41 analog board...
- Page 42 IR / KEY board...
- Page 43 POWER board...
- Page 44 APPENDIX-A: Main assembly Model Part name 203.L42T170-26 Button board 667.L42T17-05 Main board 667.L37T7-01C IR receiver board 667.L42T17-09 High frequency board 667.L42T17-55 Power board 667.L42W17-20 Remote control 301.IL37T25-04 Panel 335.42022-00...
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Page 45: Appendix-B: Exploded View
APPENDIX-B: Exploded View... - Page 46 PART LIST OF EXPLODED VIEW No. PART NO. DESCRIPTIONRE 740-10331-01 Glass panel 803-30262-00 Fixed bar(upper ) 803-30261-00 Fixed bar(right) 803-30260-00 Fixed bar(left) 803-30263-00 Fixed bar(bottom ) 615-10519-7B1 Front frame assy Button board assy 700-60266-00 LED column Infrared receiving board assy 360-30042-00 Power switch 803-30266-00...
- Page 47 Parts list Ref. No. Parts No. Description XI5Q218W2020 FRONT CABINET ASSY XI67218WK02A BACK CABINET XI5203428502 PANEL XI6LT00901C0 DIGITAL PROCESSING BOARD XI6LW0192010 POWER BOARD XI6LT0030510 KEY BOARD XI6LT0140910 IR BAORD XI6010I00402 XI6151064820 STAND XI594401575A USER MANUAL XI60Z0000238 LOGIC BOARD XI60Z0000022 BACKLIGHT BOARD...
- Page 48 July/2009...