Advertisement
Quick Links
Advertisement
Related Manuals for XOCECO PH-50HU31S
Summary of Contents for XOCECO PH-50HU31S
- Page 1 PDP TELEVISION PH-50HU31S...
- Page 2 CONTENTS Safety instructions………………………………………………………………………..… Adjustment instruction …………………………….…….…………………………….… working principle analysis……………………………….………….……………………. block diagram…………………………………..……………………….…………………. IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………..……………... Troubleshooting guide ………………………………………………………………..…… Schematic diagram………………………………………………………………………….. APPENDIX-A: Assembly list APPENDIX-B: Exploded view...
- Page 3 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.
- Page 5 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.
- Page 8 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 9 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 10 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 11 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 13 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.
- Page 15 Wiring diagram...
- Page 16 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 17 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 18 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...
- Page 19 page 1 of 4...
- Page 20 page 2 of 4...
- Page 21 page 3of 4...
- Page 22 page 4 of 4...
- Page 23 interface connector...
- Page 24 KEY board...
- Page 25 IR receiver board...
- Page 26 TV board...
- Page 29 APPENDIX-A: Main assembly 9350HU3111 MAIN COMPONENT AND IT'S NO. NAME N404 TDA4470MFL (5274470001) Analog board 6HU0515310 N405 MP7722DF (5277722001) Main board 6HU0580110 MST9E88L (5270988002) Interface board 6HU0512910 Key board 6HU0670510 IR board 6HU0670910 Power filter board 6FK0105110 Power board 6HU0592010 RC-Y35-0A Remote control 6010Y03502...
- Page 30 APPENDIX: EXPLODED VIEW PH50X31...
- Page 31 PART LIST OF EXPLODED VIEW DESCRIPTION front cabinet panel filter glass upsh board (left) upsh board (upper1) upsh board (upper2) push board (right) connection of panel analog board CPU board power switch bracket key board wall mounting bracket back cabinet back baffle speaker back cover (left) speaker back cover (right)
- Page 32 9350HU3111 Ver.1.0...
Need help?
Do you have a question about the PH-50HU31S and is the answer not in the manual?
Questions and answers