Philips-FWD-872-Service-Manual(1) 电路图 维修手册.pdf
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1、FWD872/55/98 Copyright 2006 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior
2、permission of Philips. Published by SL-ET 0650 Service Audio Printed in The Netherlands Subject to modification DVD Mini System Version 1.1 CLASS 1 LASER PRODUCT 3141 785 31181 TABLE OF CONTENTS Page Location of PC Boards .1-2 Specifi cations .1-3 Measurement Setup .1-4 Service Aids, Safety Instruct
3、ion, etc .1-5 to 1-7 Repair Instructions.2 Disassembly Instructions fr Reparaturen sind Original-Ersatzteile zu verwenden. Sicherheitsbauteile sind durch das Symbol ! markiert. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di
4、 ricambio identici a quelli specificati. Componenty di sicurezza sono marcati con ! GB After servicing and before returning set to customer perform a leakage current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5
5、mA. 1-7 2 - 12 - 1 REPAIR INSTRUCTION ACEGI K MAIN UNIT REPAIR CHART 1/3 ALL FUNCTION VFD DISPLAY AND KEY POWERSUPPLY AUDIO LINE DIGITAL LINE DVD NO VIDEO A All function No working Checkall syste m all cable is loos e or ba d INT Pan el stanby LED show working or Not RE-insert and fix the cabl e Che
6、ckback power PCB F901 ba d cau se da mage Change F901 CheckCN953 5V if right Checkrepair control PCB Stan dby circuit Check+5V power supply ci rcuit CheckRB102 Pin5=5V Checkrepair switch power circuit (about B) Checkall Voltage 3.3V and 1.5V give circuit VCC=5V VCC33=3. 3V VDD=1.5V CheckIC106 Pin203
7、 Pin186( osc freque ncy 27MHz) Repairmain pcb betw een U107 to IC106 circuit B VFD display No show and ke y function Checkcontrol pcb RB300, RB301cable loose or ba d INT ChecktestRB300 Pin4=-24V Pin5=5V Pin9,8= AC3.5V Checktest RB301 Pin3/CLK,Pin4/DATA and pin2/CE CheckVFD control PCB section ba d c
8、au se da mage RE-insert and fix the cabl e Checkback power PCB power supply circuit CheckIC106 AND IC300 C Power suppl y No working All voltage No output CheckF901 ba d Cause Damage Change F901 +12V No output +5V No output -27V No output CheckD959 a nd its conjoint pa rt CheckD960 a nd its conjoint
9、pa rt CheckD963 a nd its conjoint pa rt YES NO NO BAD NO YES YES WORK NO CHECK CORRECT YES YES YES NO NO NO NO YES NO YES YES B NO WORKING NO SHOW FUNCTION NO WORKING NO OUTPUT NO OUTPUT DFHJ USB FUNCTION NO WORKING MIC FUNCTION NO WORKING TUNER FUNCTION NO WORKING AUX IN NO SOUND TAPE FUNCTION NO W
10、ORKING 2 - 12 - 1 REPAIR INSTRUCTION ACEGI K MAIN UNIT REPAIR CHART 1/3 ALL FUNCTION VFD DISPLAY AND KEY POWERSUPPLY AUDIO LINE DIGITAL LINE DVD NO VIDEO A All function No working Checkall syste m all cable is loos e or ba d INT Pan el stanby LED show working or Not RE-insert and fix the cabl e Chec
11、kback power PCB F901 ba d cau se da mage Change F901 CheckCN953 5V if right Checkrepair control PCB Stan dby circuit Check+5V power supply ci rcuit CheckRB102 Pin5=5V Checkrepair switch power circuit (about B) Checkall Voltage 3.3V and 1.5V give circuit VCC=5V VCC33=3. 3V VDD=1.5V CheckIC106 Pin203
12、Pin186( osc freque ncy 27MHz) Repairmain pcb betw een U107 to IC106 circuit B VFD display No show and ke y function Checkcontrol pcb RB300, RB301cable loose or ba d INT ChecktestRB300 Pin4=-24V Pin5=5V Pin9,8= AC3.5V Checktest RB301 Pin3/CLK,Pin4/DATA and pin2/CE CheckVFD control PCB section ba d ca
13、u se da mage RE-insert and fix the cabl e Checkback power PCB power supply circuit CheckIC106 AND IC300 C Power suppl y No working All voltage No output CheckF901 ba d Cause Damage Change F901 +12V No output +5V No output -27V No output CheckD959 a nd its conjoint pa rt CheckD960 a nd its conjoint p
14、a rt CheckD963 a nd its conjoint pa rt YES NO NO BAD NO YES YES WORK NO CHECK CORRECT YES YES YES NO NO NO NO YES NO YES YES B NO WORKING NO SHOW FUNCTION NO WORKING NO OUTPUT NO OUTPUT DFHJ USB FUNCTION NO WORKING MIC FUNCTION NO WORKING TUNER FUNCTION NO WORKING AUX IN NO SOUND TAPE FUNCTION NO WO
15、RKING 2 - 22 - 2 D Audio line No output Check JK700 is good or bad Check IC500 pin4=-12V CheckIC500 to Check12V and IC106 ciruit Check IC106 and its conjaint part Repair between and IC106 ciruit IC500 to JK700 Change JK700 supply circuit E Digital line No output check IC109 Check 5V Check between su
16、pply ci rcuit IC106 Pin95 circuit pin14=5V JK201 TO Check IC106 circuit F DVD No Video Check JK102 is good or bad ChangeJK102 CheckJK100 is good or bad Change JK100 Check between IC106 circuit JK100 TO Repairbetween IC106 circuit JK100 TO CheckIC106 and its around part pin8=12V MAIN UNIT REPAIR CHAR
17、T 2/3 BAD NO YES YES NO OK OK BAD NO YES YES BAD OK OK NO G USB FUNCTION NO WORKING Check USB pcb CN104 cable loose or bad INT RE-insert and fix the cable YES Checktest CN104 Pin1=5V CheckUSB JK& PCB section bad cause damage Check back power PCB power supply circuit NO NO YES JK700 IC301,IC500 2 - 3
18、2 - 3 H MIC Function No working MAIN UNIT REPAIR CHART 3/3 I Tuner function No sound J AUX IN No SOUND K TAPE FUNCTION No WORKING CheckMIC pcb RB2 2 cable loose or ba d INT RE-insert and fix the cable YES Check test IC701& Pin4=5V Checkback power PCB power supply circuit YES NO IC700pin8=12V Check t
19、est JK200 YES IC200& MIC PCB Check TUNER pcb CN4 cable loose or bad INT RE-insert and fix the cable YES Check test CN4Check back power PCB power supply circuit YES NO pin9=9V Check TUNER PART YES Check JK700 IS GOOD OR BAD Change JK700 BAD NO Check IC7 2 and its Check TAPE pcb RB802 &CN800 cable loo
20、se or ba d INT RE-insert and fix the cable YES Check test IC804 Check back power PCB power supply circuit YES NO IC803 pin16=12V Check IC804 & IC803 YES OK Check between IC702 circuit JK700 TO Repair between IC702 circuit JK700 TO OK around part Pin15,16=5V its around part & 3-13-1 DISASSEMBLY INSTR
21、UCTIONS Figure 5 Dismantling of the Main Board 1) Release 1 screw E at the side of main board as figure 5. 2) Loosen 1 screw F at the main heat sink board as figure 6. Dismantling of the Power Board 1) Loosen 4 screws G to remove the Power Board as figure 7. 2) Remove the catch H using cutter as sho
22、wn in figure 8. Figure 1 Figure 6 Figure 2 Dismantling of the back panel & DVD Module 1) Loosen 6 screws at both slide cover A shown as figure 1 and 8 screws at back panel to take out the top cover. 2) Loosen 18 screws B at the back panel as figure 2. 3) Loosen 4 screws C to take out DVD module cove
23、r as figure 3. 4) Loosen 4 screws D to take out DVD module as figure 4. Figure 4 Figure 7Figure 8 Figure 3 A B C F E G H D 3-23-2 SERVICE POSITIONS Service position A Service position B Figure 12 Figure 11 Note: In some service positions the components or copper patterns of one board may risk touchi
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