Philips 33I-32V-STEREO LARGE MX3291C - Service Manual

LCD TELEVISION SERVICE MANUAL Chassis LS07 Please read this manual carefully before service.

2 TDA15021H introduction: The third-generation super integrated circuit UOC III which designed by Philips company recently integrates with

4 VDDA3 +3.3V 5 VREF_POS_LSL +3.3V 6 VREF_NEG_LSL+HPL 0V 7 VREF_POS_LSR+HPR +3.3V 8 VREF_NEG_HPL+HPR 0V 9 VREF_POS_HPR +3.3V 10 XTALIN crystal os

control 47 VP2 +5V 48 IFVO The video output of Choose channel 49 AUDIOIN4L HD signal left track audio output 50 AUDIOIN4R HD signal right t

88 VDD3 +3.3V 89 VREFAD_NEG 0V 90 VREFAD_POS +3.3V 91 VREFAD Audio ADC reference voltage 92 GNDA grounding 93 VDDA +1.8V 94 VDD3A +3.3V 95 VSS

3、TDA9178 brief TDA9178 is a analog signal processor with standard YUV input and output interface .It provide three main process function: luminan

7 address selection input I2C address choose input terminal 8 U signal input U input 9 V signal input V input 10 test pin Grounding 11 serial cloc

4、TDA1517ATW brief: The TDA1517ATW is an double channel class-AB power amplifier contained in a plastic heat sink thin shrink small outline package

PartⅢ: Signal Processing Flow chart This chapter mainly introduces analog signals process、video intensify process、TV system control process、TV suppl

z +34V:RF tuner tune voltage z VCC5: stable and constant +5V power supply z VCC5A: +5V power supply software can turn off z V3_3D:UOC digital pa

A 13 2 4 5 6 7 10 12 13 14 15 16 17 18 19 20 21 22 23 24 25 C B J K D E FI HG LMNO

CONTENTS Part :Ⅰ Specification , feature and Composition …………………………………………1 1.1 Technical specification……………………………………………………...

Socket definition number name Connect object Function description 1 JP1 Connect inside power supply board module 2 JP2 Connect outside power ada

A A1 RF tuner TAF5-E2I21RW2 RF input, IF output B U2 UOC(TDA15021H) Video decode and MCU control C U3 MST518 AD converter and format transform

PartⅣ: Typical troubleshooting processing flowchart and Example Ⅰ. Typical troubleshooting flowchart 1、No anything(haven’t sound ,haven’t picture,

indicator light work,but black screen when pressing down the power supply key Observe back lamp is on or offNOYESU13、 U22 output voltage is normal

4、 Picture abnormal、color abnormal 、short of color switch signal source,Observe if the picture is a bnormal in some mode condition C he c k U

ok, PC (in VGA mode) is no picture, but have state icon. The process of maintenance: first check the signal source, signal socket、plug are ok or not

operate ,each function is ok. use AV、PC audio input ,is still no sound output. The process of maintenance: measure the waveform from 60th pin of UOC

PartⅤ: Spare part lists Spare part lists: 20 inch LCD TV Material name type（module NO.） Material code remark Mainboard module JUJ6.690.033 8669000

12 3 4 5 6ABCD654321DCBATitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.D

TitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.DDBDrawn By:R3210KHD_AUD_

PartⅠ: Specification , feature and Composition Ⅰ、 Technical Specification: 20 inch LCD TV Physical resolution :640*480(VGA), Audio power output:2*

12 3 4 5 6ABCD654321DCBATitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.D

12 3 4ABCD4321DCBATitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.DDBDraw

12 3 4ABCD4321DCBATitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.DDBDraw

12 3 4 5 6ABCD654321DCBATitleNumberRevisionSizeOrcad BDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_2005

12 3 4 5 6ABCD654321DCBATitleNumberRevisionSizeOrcad BDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_2005

12 3 4 5 6ABCD654321DCBATitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.D

12 3 4ABCD4321DCBATitleNumberRevisionSizeBDate:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.DDBDraw

12 3 4ABCD4321DCBATitleNumberRevisionSizeA4Date:1-Nov-2006 Sheet of File:C:\Documents and Settings\LK\Lb\LS07_MPCB_PH6.1_EU_for_MP_20051221.DDBDra

Annex 3 Final Assembly diagram

Annex 4 Final Wire Connection diagram

terminal display. 13、Automatic picture’s quality adjustment 14、No flicker, no radiation, greenness and health 15、Auto on as time is set 16、Zoom mod

Ⅳ. PCB assembly introduction The Constitution of the PCB is easier than LP03 chassis, all the Signal Processing are in Main board. 1、 Main board

4、 Earphone output board assembly It is composed of a earphone outlet, user can Listen by earphone conveniently. 5、 Inverter board assemb

PartⅡ: Function introduction about the main integrated circuit Ⅰ. Main ICs and components serial number Name model Main function 1 A1 TAF5-E2I21RW

MST518 pin function: And CPU interface Pin Pin name Pin function 33 HWRESET Hardware reset，high voltage enable 82 CS Chip select signal of three

143 LHSYNC Horizontal sync output 138 LVA0M LVDS output 0－ 137 LVA0P LVDS output 0+ 136 LVA1M LVDS output 1－ 135 LVA1P LVDS output 1+ 134 LVA2M LVDS