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Related Manuals for Sanyo PDP-50XR7
Summary of Contents for Sanyo PDP-50XR7
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Page 2: Table Of Contents
CONTENTS Safety instructions………………………………………………………………………..… Alignment instruction …………………………….…….………………………………… Method of software upgrading…………………………………………………………….. Working principle analysis………………………………………….………….…………. Block diagram…………………………………..………………………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………………………. Troubleshooting guide ………………………………………………………………..…… Schematic diagram………………………………………………………………………… APPENDIX-A: Assembly list APPENDIX-B: Exploded View... -
Page 3: Safety Instructions
Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety precautions Please read the “Points for attention for the Maintenance & Repair of PDP” and “Criterion for Identifying the Defects on Screen” as below, before inspecting and adjusting the TV set. 1. - Page 4 where the space is narrow and in bad ventilation. 1.10 There are quite a number of circuits in PDP that are integrated ones. Please be on guard against static electricity. During maintenance operation be sure to cover yourself with anti-static bag and before operation make sure to have it sufficiently grounded.
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Page 5: Alignment Instruction
too big screw. 1.20 Care must be taken to guard against dust during assembling or dismantling, especially to avoid dirt from falling in between the screen and the glass lest it should harm the receiving and viewing effect. 1.21 There is piece of insulator stuck on the rear chassis corresponding to the power supply board. It is used to isolate the cool part from the hot part. - Page 6 3.1 Initialization Enter factory menu, select “OPTION” and “HOTEL OPTION” sub-menu, adjustment of items to see table1. Table1 sub-menu adjustment Items Preset Introduce HOTEL 1: HOTEL OPTION of factory menu is optional 0: HOTEL OPTION of factory menu is not optional LOGO 1: display LOGO in no signal or turn on 0: no LOGO display...
- Page 7 adjust to full screen, then input PAT948 black/white signal, enter factory menu ADC ADJ, select AUTOTUNE and wait for OK display. Input PAT920(8 gray levels), check if the white balance is normal, if not, set ALL COLOR to 0 and fine adjust according the method of 3.3.1 b.
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Page 8: Method Of Software Upgrading
Method of software upgrading 1. The tools and software demanded 1) Please confirm that PC has the software of ISP_TOOL and install the parallel interface drive program Port95nt. 2) ISP_TOOL icon is bellow: 3) One serial cable (25 pins) and one VGA cable (15 pins), the serial cable connects the PC and the upgrade instrument, the VGA cable connects the TV and the upgrade instrument. - Page 9 Note: if it appears error, check the connection wires and check if ISP item of the factory menu is set to 1, if not, please set it to 1. 4) After connection is done, it needs to read the Binary document. Press “Read” as shown below: 5) Search the document needed to write in the “Read”...
- Page 10 Select 6) Select the document then the window will appear as shown below:...
- Page 11 7) Press “Auto” to select the writing function. Select the items shown in the picture above: (a) Read File...
- Page 12 (b) Program (c) Exit ISP (d) Erase Device (e) File Area 8) Press “Run” to begin the writing program, wait till the blue bar is complete. After writing, it will display OK: If there is error appeared (shown as below), press “Run” again to rewrite the program till it is success.
- Page 13 Note1: keep the connection well and don’t cut off the power during the writing process. Note2: the writing speed can be adjusted as shown below. Select “Config” then adjust Speed BAR, the value is bigger the speed is faster. But it is easier to appear error when increase the speed, so it need to select a suitable speed according the PC.
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Page 14: Working Principle Analysis
Working principle analysis of the unit The RF signal received by antenna will be sent to tuner TUN401, then IF signal will be obtained through high amplifier and mixed frequency, through pre-intermediate amplified by V408, then it will be sent to acoustic surface-wave Z407 to do IF filter and get better IF characteristics, then it will be sent to N404 (TDA4470) to do intermediate amplification, phase-locked loop VCO and synchronous wave detection to get video signal TV-V;... -
Page 15: Block Diagram
Block diagram POWER MEG. ATMEG8L EDID EDID 24C02 24C02 HDMI FLASH HDTV SW. YPbPr PI5V330 (DTV) EEPROM LCD TV SCART1-RGB CONTROLLER SCART1-AV HDCP KEY SCART1-L/R AUDIO SW. MST9X88LD HEF4052 SCART2-L/R PANEL SCART2-Y SCART2-C Y/AV1 AUDIO AMP. MP7722 TUNER SPEAKER TV-V IF AMP TV-SIF TDA4470... -
Page 16: Ic Block Diagram
IC block diagram 1. MST9E88L The MST9E88L is a high performance and fully integrated IC for multi-function LCD monitor/TV with resolutions up to SXGA/WXGA. It is configured with an integrated triple-ADC/PLL, an integrated DVI/HDCP/HDMI receiver, a multi-standard TV video and audio decoder, a video de-interlacer, a scaling engine, the MStarACE-3 color engine, an on-screen display controller, an 8-bit MCU and a built-in output panel interface. - Page 17 2. MP7722DF The MP7722 is a stereo 20W Class D Audio Amplifier. It is one of MPS’second generation of fully integrated audio amplifiers which dramatically reduces solution size by integrating the following: 180mΩ power MOSFETs Startup / Shutdown pop elimination Short circuit protection Mute / Standby The MP7722 utilizes a single ended output structure capable of delivering 2 x 20W into 4Ωspeakers.
- Page 19 3. TDA4470 The TDA4470 is an integrated bipolar circuit for multi-standard video/sound IF(VIF/SIF) signal processing in TV/VCR and multimedia applications. The circuit processed all TV video IF signals with negative modulation (e.g., B/G standard), positive modulation (e.g., L standard) and the AM, FM/NICAM sound IF signals.
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Page 21: Wiring Diagram
Wiring diagram... -
Page 22: Troubleshooting Guide
Trouble shooting 1. No raster Turn-on power supply, check if the red indicator is light in the STANDBY? Check if PIN3(5V) of main Press POWER button in the board is normal? unit or sensor control and check the indicator. blue Check if the PIN27 of X304 in Check STANDBY circuit of 01 board is high-level? - Page 23 2. Raster, but no picture Check if the unit button Does display remote control menu in screen when operation? press menu button? Check channels have signal? HDMI/VGA/YPRPB Enter factory-menu, Which is no signal initialization EEPROM, of channels Replace then turn off the TV, main board turn on again, display Replace...
- Page 24 3.no sound Check if PIN2, 8,13 and Check PIN3 18 voltage of N405 is PIN7 output wave of Replace N405 normal? N405 Check power supply Check PIN62 wave of Replace NS4 Replace Z406 Check PIN11 wave of TUNER1 Replace TUNER1...
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Page 25: Schematic Diagram
page 1 of 4... - Page 26 page 2 of 4...
- Page 27 page 3of 4...
- Page 28 page 4 of 4...
- Page 29 interface connector...
- Page 30 KEY board...
- Page 31 IR receiver board...
- Page 32 TV board...
- Page 35 APPENDIX-A: Main assembly PDP-50XR7 MAIN COMPONENT AND IT'S NO. NAME N404 TDA4470MFL (5274470001) Analog board XI6HU0515310 N405 MP7722DF (5277722001) Main board XI6HU0580110 MST9E88L (5270988002) XI6LT0251410 Indicator light board Interface connection board XI6HU0512910 Key board XI6HU0530510 Power filter board XI6FK0105110 Power board...
- Page 37 PART LIST OF EXPLODED VIEW DESCRIPTION Indicator light board Front cabinet Key board Panel Stand Speaker Interface connection board Main board Back cabinet Analog board Power filter board Power board User manual Remote control...
- Page 38 PART LIST PDP-50XR7 ver. REF.No. PARTS No. DESCRIPION Q'TY REMARK XI6LT0251410 Indicator light board XI66S18R032E Front cabinet XI6HU0530510 Key board Panel 1 LG PDP50X4P Stand XI6371285020 Speaker XI6170712020 Interface connection board XI6HU0512910 XI6HU0580110 Main board XI5HS31RI010 Back cabinet Analog board...