Philips-MRD-300-Service-Manual(1) 电路图 维修手册.pdf

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1、CLASS 1 LASER PRODUCT Service ServiceService ServiceService MRD300/37 Copyright 2003 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,

2、mechanical, photocopying, or otherwise without the prior permission of Philips. Published by KC-ET0332 Service AudioPrinted in The NetherlandsSubject to modification GB 3139 785 30450 DVD Receiver Version 1.0 TABLE OF CONTENTS Page Location of PC Boards.1-2 Versions Variation fr Reparaturen sind Ori

3、ginal-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricambio identici a quelli specificati. After servicing and before returning set to customer perform a leakage current measurement test from all

4、 exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5mA. CLASS 1 LASER PRODUCT 3122 110 03420 GB Warning ! Invisible laser radiation when open. Avoid direct exposure to beam. SVarning ! Osynlig laserstrlning nr apparaten r ppnad och sprren r ur

5、kopplad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen! DK Advarse ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. 1) System Reset a) Press SETU

6、P button on R/C. TV show setup menu b) Select the menu using the 1 / 2 / 3 / 4 buttons on R/C c) Go Preference setup page to do system reset d) Press OK or SETUP to confirm or exit setup menu System, Region code, Tuner, etc. setting procedure 2) Region Code Change a) Put the player in stop mode and

7、no disc loaded. b) Press the following key on remote control: c) The current region code is displayed on OSD. d) Then press 4 to select the region code you want. e) Press OK to confirm your selection. * After the Region Code is changed it is necessary to reset the system so that the new Region Code

8、will be fully effective. All customer setting will be lost. * On top of the maximum number of times allowed for changing the region code is changed to 25. * When the counter reach 25, you will not be able to further change the code until you reset the timer by the Region Code timer reset procedure 4

9、) Video out change a) Press SETUP on R/C button b) Select the menu using the 1 / 2 / 3 / 4 buttons on R/C c) Go General setup page select Video out item d) Press OK or SETUP to confirm or exit setup menu 5) Password Change a) Press SETUP on R/C button b) Select the menu using the 1 / 2 / 3 / 4 butto

10、ns on R/C c) Go Preference setup page select PASSWORD, press 2 to select CHANGE, Press OK. d) Press the old password (1234) button on R/C. e) Using the numeric keys (09) to enter the new password f) Press OK or SETUP to confirm or exit setup menu 6) Set Parental Control Level a) Press SETUP on R/C b

11、utton b) Select the menu using the 1 / 2 / 3 / 4 buttons on R/C c) Go Preference setup page select PARENAL, press 2 to select 8 ADULT d) Enter PASSWORD (1234) * 1234 is the default password supplied. e) Press OK or SETUP to confirm or exit setup menu 7) Checking on the Software version a) In no disc

12、 mode, NO DISC will be shown on OSD b) Press DISC NO, then press 1, 2, 3, OK on the remote control c) TV will show the current software version Number on scree . MCU 0.6 . VER 0721 1 US 0 8) Upgrading new software a) Open the CD-door, then insert the CD-R program disc. b) Close the CD-door. c) TV wi

13、ll show:- . disc loading . bank30.rom . writing about 6 seconds. . Done CAUTION ! This information is confidencial and may not be distributed. Only a qualified service person should reprogram the Region Code. 3) Tuner area change a) Put the player in stop mode and no disc loaded. b) Press the follow

14、ing key on remote control: c) The current region code is displayed on OSD. d) Then press 4 to select the region code you want. e) Press OK to confirm your selection, the system will remain original status if no any button is pressed within 5 seconds. * Please refer to the above different tuner area.

15、 2-1 AM 530K 1710K 10K AM 531K 1620K 9K AM 531K 1620K 9K AM 530K 1710K 10K N/Z AM 531K 1620K 9K AREA BAND FREQUENCY (Hz) STEP (Hz) USA FM 87.5M 108M 100K APAC FM 87.5M 108M 50K EUROPE FM 87.5M 108M 50K LATAM FM 87.5M 108M 50K AUSTRALIA FM 87.5M 108M 50K 2-1 2-2 REPAIR INSTRUCTIONS 2-2 PILIPS MRD300

16、REPAIR CHART MAIN UNIT REPAIR CHART ABCDEFGHIJ ALL FUNCTION NO WORKING VFD DISPLAY NO SHOW AND KEY FUNCTION DVD NO SOUND POWER SUPPLY NO WORKING AUDIO OUTPUT NO SOUND AUX/TV IN NO SOUND TUNER NO SOUND EAR HEAD PHONE NO SOUND AUDIO LINE NO OUTPUPT DIGITAL LINE NO SOUND A ALL FUNCTION NO WORKING CHECK

17、 ALL SYSTEM ALL CABLE IS LOOSE NO OR BAD INT PANEL STANDBY LED SHOW WORKING NO RE-INSERT AND FIX THE CABLE YES OR NOT CHECK BACK POWER PCB F901 BAD CAUSE YES CHANGE F901 BAD DAMAGE CHECK CN900 12V +5V RIGHT YES CHECK REPAIR CONTROL PCB IC206 YES STANDBY CIRCUIT REPAIR BETWEEN NO RB906 TO CN 900 AND

18、CN201 CIRCUIT CN201 PIN13(PVCC) CHECK IC902 PIN3=+5V CHECK IC904 PIN 3=3.3V CHECK REPAIR NO CHECKALL VOLTAGE CIRCUIT CORRECT REPAIR MAIN PCB BETWEEN IC100 TO IC107/IC108 CIRCUIT SHECK IC100 pin2 NO pin3(osc frequency 27MHz) pin51(121MHz) 3.3V AND 5VGIVE NO WORK SWITCH POWER SUPPLY CIRCUIT(see B) B r

19、b201 and rb202CABLE LOOSE OR BAD INT CHECK CONTROL PCB RB201 pin5=+5V NO RE-INSERT AND FIX THE CABLE YES PCB POWER SUPPLY NO CIRCUIT YES CHECK IC100 IC400 NO CHECK +5V POWER CHECK TEST CN201 pin4/DATA SCHECK VFD CONTROL PCB SECTION BAD CAUSE CHECK TEST CN201 pin6=-24v pin7,8=AC2V pin5=5V pin2/CE pin

20、3/CLK YES SUPPLY CIRCUIT VFD DISPLAY NO SHOW AND KEY FUNCTION YESYES DAMAGE NO 2-3 REPAIR INSTRUCTIONS 2-3 C C DVD NO VIDEO CHECK JK301 OK DVD NO READING OR BAD CHECK CN805 CN806 TO DVD LOADER CABLE LOOSEOR BAD INT CHECK IC900 pin3=8V IC905 pin3=3.3V YES CHECK SPIN-M SLED-M IS RUN YES NO IC903 IC901

21、 pin1=5V CHECK pickup if light up Cant OPEN CLES NO CHECK Q808 Q807 OK check IC100 OF IC804 TO CN805 SHECK CN805 PIN1 NO RF OUT Q803,Q804 TO CN805 DVD NO SOUND CHECK L300L304 CHECK IC100 AND ITS AROUND PART CHAGE JK301 CHECK BAD ZD300ZD309 BAD OK 0K CN300 RE-INSERT AND FIX THE CABLE NO CHECK NO IC90

22、0/IC903/IC901 IC905 CHECK CN802 TO CHECK CN802 pin1,2 YES CHECK OPEN-M YES DVD LOADER CABLE LOOSEOR BAD INT CHECK IC801 pin1,pin7 BAD NO RE-INSERT AND FIX THE CABLE is HI or LO NO is HI or LO CHECK IC801/pin4,5 The disc changer cant run CHECK CN803 CHECK CN803 pin1,2 YES CHECK OPEN-M YES DVD LOADER

23、CABLE LOOSEOR BAD INT is HI or LO CHECK IC800 pin1,pin7 BAD NO RE-INSERT AND FIX THE CABLE CHECK IC800 pin4,5 NO is HI or LO is HI or LO YES CHECK IC800 YES CHECK CN803 YES CHECK YES CN802 Cant LOAD UP DOWIN CHECK CN804 TO CHECK CN804 pin1,2 YES loda up down-M YES DVD LOADER CABLE LOOSEOR BAD INT CH

24、ECK IC802 pin1,pin7 BAD NO RE-INSERT AND FIX THE CABLE is HI or LO NO is HI or LO CHECK IC802/pin4,5 CHECK YES CN802 YES YES CHECK IC803 pin20,21 (11.0582MHz)CIRCUIT YES CHECK IC805 OK CHECK LOADER OK CHECK LOADER OK CIRCUIT CIRCUIT CN805 pin2,5,6,7,9,10,11,12 CIRCUIT CHECK LOADER REPAIR INSTRUCTION

25、S 2-42-4 D ALL VOITAGE NO OUTPUT CHECK F901 BAD CAUSE DAMAGE YES NO Check RL901 working or not Check T903 pin3 approx if +28v Voltage CHECK D905 AND Check BR901 no +30V Voltage No Output and RT901 its conjoint part E Check IC402,IC502,IC503 Pin4,7,12,15 Voltage=30V Check IC500 their Voltage correct

26、is 3.3V 2.5V YES Check RL901 and its conn circuti YES Check T903,IC903,IC904, SN901,D902.D906,D907, NO D905and their conjoint part YES Repair Between IC1000 IC402 IC502 IC503 to Check IC100 and its Check Between IC500 to Check CN500 and its conjoint part IC100 Circuit NO conjoint part Audio Output N

27、o Sound YES POWER SUPPLY NO WORKING +6V Voltage No Output +12V Voltage No Output -24V Voltage No Output CHECK D906 AND its conjoint part CHECK D907 AND its conjoint part CHECK D908 AND its conjoint part yes Check repair in 3.3V 2.5V net its conjoint part NO NO and IC403 circuit Repair Between IC503

28、L/R channel No Sound to JK500 and IC500 RS/center channel No Sound LS/SUB channel No Sound circuit Repair Between IC502 to JK500 and IC500 circuit Repair Between IC402 to JK500 and IC500 circuit F Check JK400 loose bad INT Check IC 401 pin16=+7V pin7=-7V offirm correct NO Aux/Tv in No Sound Check +7

29、v and -7v give circuit NO Check Repair Between IC401 to JK300 and IC403 Check Repair IC403 to IC100 tata NO YES Circuit 2-52-5 REPAIR INSTRUCTIONS G Tuner No Output Check CN701pin 11=5V NO NO Check T105 OK YES VT section circuit see F Ceck IC152 data From pin5/CL,pin6/DO NO Check Repair Between RB10

30、1 to main pcb IC400 NO and IC400 Circuit Check tuner vt From c161 NO low Frequency=1.5-2.0v High Frequency=8.0-9.0V RB101pin3/ce,pin4DI, A:Repair AM osc stion(T003)or (Between IC101Pin30 to IC152 pin13 circuit) Check IC152 osc input VT No Change NO CCheck AM IF (T102/CF103) Check IC101audio ooutput

31、IC101 pin16 to RB101 pin13(R-CH) IC101pin17 to RB101pin15(L-CH) NO pin13=-AM input pin14-FM input H Check Between RB501 to CN400 Cable loose or INT Check Between IC412 to IC410 and NO RE-INSERT AND FIX THE CABLE YES Check IC403 and its around NO Check IC412 circuit Ear Head phone No sound YES pin12=

32、12V Check CN702 pin1,3 its audio output B:Repair FM osc section (Between EF001 Pin8 to IC152 pin14 circuit) Check IC152 OK Check main pcb of Tuner input Circuit (Between IC401pin4 and pin11) OK yes Check FM IF output Q101,Q102 NO FM function IC408 Circuit I Check IC403 to IC404 IC405,IC406 Circuit C

33、heck IC404,IC405 IC406 to IC407 Circuit OK Check Q402,Q405,Q404 Audio Line No sound YES Circuit J At DVD mode Check Q288C=5V Check Between cn300 to Av pcb cn300 and IC100 OK Check IC100 circuit Digital Line No sound ok 3-1 DISASSEMBLY INSTRUCTIONS 1) Open the DVD Tray by using the Open/Close Button

34、while the Set is ON and disconnect the mains supply after removing the Tray Cover. (Figure 1) Note: If this is not possible, the DVD Tray has to be open manually. Take a mini screw driver about 2mm diameter and make a marking 24mm from the tip as shown in figure 2. 2) Remove the tray cover as shown

35、in Figure 1 and close the tray manually by pushing it back in. 3) Loosen 9 screws and remove the Top Cover by lifting the rear portion upwards before sliding it out towards the rear. - 5 screws on the back - 2 screws each on the left & right side 4) Loosen 16 screws & lift up the top edge of Front P

36、anel assembly to free some catches before sliding it out towards the front. - 3 screws on the bottom in figure 3 (A) - 1 screw each on the left & right side in figure 3 (A) - 11 screws in figure 4 (B) & (C) Dismantling of the Key Board Assembly 3-1 Dismantling of the Main Board (include servo & ampl

37、ifier & MPEG) 1) At first, Should loosen 8 screws (D) on the back panel as shown in figure 6. 2) Loosen 5 screws (E) on the back panel as shown in figure 6. 3) Loosen 6 screws (F) on main board as shown in figure 5. 4) Remove the space support on main board (G) as shown in figure 5. 5) Remove connec

38、tor at main board. Figure 1 Figure 3 A B Figure 4 C Dismantling of the Tuner Board & YUV Board 1) Loosen 3 screws (J) on the back panel and tuner board as shown in figure 6. 2) Loosen 4 screws (H) on the back panel as shown in figure 6. D E J H Figure 6 Figure 5 F G 24mm 2mm Figure 2 IMPORTANT! To a

39、void of laser diode damage during repairing, please make sure short circuit the protect point first. 3-2 3-2 Figure 7 Figure 8 Dismantling of the Power board. 1) Loosen 4 screws (K) on power board as shown in figure 7. 2) Remove 2 spacer support in power board. Dismantling of the Main Board & Power

40、Board on the Bracket 1) Loosen 3 screws (M) as shown in figure 9. 2) Loosen 5 screws (B) as shown in figure 4. Dismantling of the DVD Moudle 1) Loosen 7 screws (L) as shown in figure 8. L K M Figure 9 4-1 BLOCK DIAGRAM 4-1 ESS6628 AC3/DTS Deckde TV ENCODE Servo DSP 78E52BESS6603 5 DISK Cortrol DVD S

41、ervo AFE Dtat Sheet u-com 5disk FR FL C SR SL SUB WM8772 6CH AUDIO D/AFILTER LT/RT LO/RO FL FR C SL SR SUB FL FR C SL SR SUB FL FR C SL SR SUB PT2259 LO RO LO RO TP2258 LT RT 2CH AUDIO A/DA/D TATA 2CH VOL EARPHONE LINE PUT TUNER FM AM LA1837 PLL:LA72131 AUDIO INPUT SELECT CD4052 AUX TV OUTPUT PCB Y

42、PB PR COAXIAL OPTICAL POWER BOARD PANNEL BOARD PIC16C54C PT6311 VFD memory flash 8M sdram 64M EXPAND I/O PORT 74LS374*2 TDA308 TDA505TDA505TDA505 CVBS S-V 4-24-2 WIRING DIAGRAM SUB?SL? SR? C? FL? FR? CN801?CN804? CN803? CN800?CN802?CN806? CN805? CN300? CN702? JK301?JK400? JK500? CN701? CN902? CN900?

43、CN500? CN201?CN400? FM ANT? AM ANT? SUB? SL? SR? C?FL?FR? TV? AUX?TV? AUDIO OUT? AC120V /60Hz IN? MAIN PCB? POWER PCB? CONTROL PCB? KEY PCB? VFD? RB108? CON2? CON1? RB201?RB501? TUNER PCB? CN902? CONTROL / EARPHONE / YUV / KEY BOARD TABLE OF CONTENTS FTD Display Pin Assignment .5-1 Pin Connection .5

44、-1 Circuit Diagram .5-2 PCB Layout Top View .5-3 PCB Layout Top & Bottom View .5-4 Parts List .5-5 5-15-1 FTD DISPLAY PIN ASSIGNMENT Pin Connection Pin No. 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 Connection F2 F2 NP NP P16 P15 P14 P13 P12 P11 P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 NX

45、Pin No. 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Connection NX NX NX NX NX NX 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G NP NP F1 F1 Note: Fn: Filament pin nG: Grid pin Pn: Anode pin NP: No pin NX: No extended pin a? b? h?j? k?f? g? m? e? r?p? n? c? d? (?2? G? -?1? 1? G? )? D? p? C?o?l?

46、P? 1? P? 2? P? 3? P? 4? P? 5? P? 6? P? 7? P? 8? P? 9? P? 1? 0? P? 1? 1? 1? G? 1? G? 2? G? 2? G? 3? G? 3? G? 4? G? 4? G? 5? G? 5? G? 6? G? 6? G? 7? G? 7? G? 8? G? 8? G? 9? G? 9? G? 1? 0? G? 1? 0? G? 1? 2? G? 1? 2? G? 1? 1? G? 1? 1? G? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b?

47、k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? h? j? a? b? k? f? g? m? c? P? 1? 2? P? 1? 3? P? 1? 4? P? 1? 5? P? 1? 6? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p? n? d? e? r? p?