Note: This maintenance manual is intended only for the reference of the maintenance people. Please pay attention to the following points before carrying out the maintenance work. Safety Precautions Please read the “Points for attention for the Maintenance & Repair of PDP” and “Criterion for Identifying the Defects on Screen”...
Page 4
static electricity. During maintenance operation be sure to cover yourself with anti-static bag and before operation make sure to have it sufficiently grounded. 1.11 There are a big number of connection wires distributed around the screen. Please take care not to touch or scuff them during maintenance or removing the screen, because once they are damaged the screen will fail to work and it’s not possible to repair it.
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. Please take care to keep it intact lest it should become a potential safety trouble.
Factory initialization setup IF channel voltage of TV and AGC voltage adjustment White balance adjustment Performance check Preset ex-factory Fig-1 adjustment flow-chart 4. Adjustment instruction 4.1 Unit adjustments Connect all the boards according to wiring diagram, then power on and observe the display. Method for entering factory menu: press “INPUT”, “2”, “5”, ”8”...
Page 7
4.3 Adjustment for AFT voltage and AGC voltage of IF channel in TV 4.3.1 IF AFC adjustment Disconnect J1(B face), input 38.9MHz PAL signal of 80dB to the pole of J1 near L11, Adjust L5 to value 1.25V of TP2. Enter factory menu, adjust TDA4470 from BG to LL, input 33.9MHz SECAM signal of 80dB, adjust R71 to value 1.25V of TP2 then solder J1.
5.6 presetting before ex-factory Item Setting Item Setting Item Setting PICTURE MODE STANDARD BALANCE OSD LANGUAGE English COLOR MODE NORMAL VOLUME OSD HPOSITION WEAK SLEEP TIMER OSD VPOSITION ZOOM FULL TTX LANGUAGE WEST OSD HALFTONE SOUND MODE STANDARD BLUE SCREEN OSD DURATION 6.
Page 9
3) Press “Connect“ to connect TV, if the connection is done successfully as shown below, then press “enter”. 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.
Page 10
5) Search the document needed to write in the “Read” check box.
Page 11
Select 6) Select the document then the window will appear as shown below: 7) Press “Auto” to select the writing function.
Page 12
Select the items shown in the picture above: (a) Read File (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.
Page 13
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. 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.
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. Step 1 Step 2 Working principle analysis of the unit The RF signal received by antenna will be sent to tuner TUNER101, then IF signal will be obtained through high amplifier and mixed frequency, through pre-intermediate amplified by V15, then it will be sent to acoustic surface-wave Z17 to do IF filter and get better IF characteristics, then...
IC block diagram 1. MST9E19A The MST9E19A is a high performance and fully integrated IC for multi-function LDC monitor/TV with resolutions up to SXGA (1280X1024)/WXGA+(1440X900). 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 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.
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 23
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.
2. Troubleshooting guide 2.1. No raster Turn-on power supply, check if the red indicator is light in the STANDBY? Check if PIN9(5V) of XS15 Press POWER button in the on main board is normal? unit or sensor control and check the indicator. blue Check the power board and Check STANDBY circuit of...
Page 25
2.2. Raster, but no picture Check if the unit button Does display remote control menu in screen when operation? press menu button? Check if all channels have no signal? VGA/SCART(CVBS)/HDMI Enter factory-menu, Which is no signal initialization EEPROM, of channels Replace then turn off the TV, Replace...
Page 26
2.3.no sound Check if PIN2, 9,10 and Check the wave of 14 voltage of NV4 is PIN5,11 of NV4 Check NV4 and its normal? periphery Check power supply Check PIN24 wave of Check NS2 and its periphery Check N3 and its Check PIN11 wave of periphery TUNER101...
Page 32
APPENDIX-A: Main assembly 9432HU3522 MAIN COMPONENT AND IT'S NO. NAME TDA4470M (5274470001) Main board 6HU06801G0 R2S15102 (5271510201) MST9E19B (5270919002) IR board 6HU0660910 Key board 6HU0660510 Remote control 6010Y03507 RC-Y35-0F PDP32F1X031 Panel 5205321202...
Page 34
PART LIST OF EXPLODED VIEW EDSCRIPTION front cabinet fiter glass panel push board main frame push board main board socket wall mounting bracket back cabinet speaker connection right speaker stand speaker back cover back baffle left speaker connection bracket push board power socket push board decorative bar...
Need help?
Do you have a question about the PS-32HU35S and is the answer not in the manual?
Questions and answers