Philips-MX-2500-D-Service-Manual(1) 电路图 维修手册.pdf

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1、CLASS 1 LASER PRODUCT Service ServiceService ServiceService MX2500D/78 Copyright 2004 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 BB- ET0423 Service Audio Printed in The Netherlands Subject to modification GB 3139 785 30760 DVD RECEIVER Version 1.0 TABLE OF CONTENTS Page Location of PC Boards fr Reparaturen sind Original- Ersatzteile

3、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 ricambio identici a quelli specificati. Componenty di sicurezza sono marcati con ! . GB After servicing and

4、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 0.5mA. CLASS 1 LASER PRODUCT 3122 110 03420 GBWarning ! Invisible laser radiation when open. Avoid direct expo

5、sure to beam. SVarning ! Osynlig laserstrlning nr apparaten r ppnad och sprren r urkopplad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen! GBWARNING All ICs and many other semi- conductors are susceptib

6、le to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential. F ATTENTION Tous les

7、IC et beaucoup dautres semi- conducteurs sont sensibles aux dcharges statiques (ESD). Leur longvit pourrait tre considrablement courte par le fait quaucune prcaution nest prise leur manipulation. Lors de rparations, sassurer de bien tre reli au mme potentiel que la masse de lappareil et enfiler le b

8、racelet serti dune rsistance de scurit. Veiller ce que les composants ainsi que les outils que lon utilise soient galement ce potentiel. ESD DWARNUNG Alle ICs und viele andere Halbleiter sind empfindlich gegenber elektrostatischen Entladungen (ESD). Unsorgfltige Behandlung im Reparaturfall kan die L

9、ebensdauer drastisch reduzieren. Veranlassen Sie, dass Sie im Reparaturfall ber ein Pulsarmband mit Widerstand verbunden sind mit dem gleichen Potential wie die Masse des Gertes. Bauteile und Hilfsmittel auch auf dieses gleiche Potential halten. DKAdvarse ! Usynlig laserstrling ved bning nr sikkerhe

10、dsafbrydere er ude af funktion. Undg udsaettelse for strling. F Pour votre scurit, ces documents doivent tre utiliss par des spcialistes agrs, seuls habilits rparer votre appareil en panne. GB ESD PROTECTION EQUIPMENT Complete Kit ESD3 (small tablemat, wristband, connection box, estention cable and

11、earth cable .4822 310 10671 Wristband tester .4822 344 13999 1) System Reset a) Press SYSTEM button on R/C. TV show SETUP b) Select the menu using the and button on R/C c) Go feature setup page to do system reset 2) Region Code Change 2- 1 System, Region code, Tuner, etc. setting procedure After rep

12、lacement / repair of the MPEG board, the customer setting and the region code may lost. Changing the Region code will put the player back in the state which it has left the factory. Region Code 1USA 2EU 3AP 4Australia, NZ, Latam 5RUSSIA, INDIA 6CHINA TV System 1NTSC 2PAL 3AUTO Menu/ Audio Subtitle (

13、AS) Language 1English 2English 3English 4English AFS 001LX3000D/LX3500D /MX2500D 002MX3600D/MX3800 003LX3700D/LX3750W oem derivative 08 . region code = 1 digit . tv system = 1 digit . as/menu lang = 1 digit . AFS = architechture Feature Set = 3 digits This field is used to define the architecture /

14、features sets for each product. . oem derivative = 2 digit This field is use to define the OEM set. This will affect the background display. 3) Region code change timer reset Press below key to reset the timer : a) In DISC source, stop mode and no disc in tray. b) Press R/C Play - 159- PLAY to reset

15、 timer to 25 4) Tuner area change a) Press the OPEN/CLOSE button to open the sets door b) Press 1 5 9 button by using R/C. c) TV Show TUNER AREA d) Select the tuner area you want by using the and button on R/C, then press OK to confirm. TV show TUNER AREA CHANGED If you didnt press it in five second

16、s, the system will remain original status. 87.5M 108M 50K /100K Note :- Please refer to the above different tuner area. 2- 1 Hence in total, reprograming will be done by way of the remote control. It should run as below :- a) Put the player in stop mode. No disc loaded. b) Press the following key on

17、 remote control: For MX2500D/78 (LATAM) : After the Region Code is changed it is necessary to reset the system so that the new Region Code 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

18、 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 CAUTION ! This information is confidencial and may not be distributed. Only a qualified service person should reprogram the Region Code. 5. Video Out Change a) Press

19、SYSTEM on R/C button b) Select the menu using the and button on R/C c) Go picture setup page select Video out item. 6. Password Change a) Press SYSTEM on R/C button b) Select the menu using the and button on R/C c) Go feature setup page select PASSWORD. TV show ENTER CODE.Press 4 times of STOP butto

20、n on R/C. d) Select PARENTAL 8 ADULT on TV. e) Enter PASSWORD to 1234. 1234 is a default password supplied. 7. Checking on the Software version a) Open the CD door. b) Press 123 and OK on the remote control. c) TV will show the version on screen. 8. Upgrading new software a) Open the door, then inse

21、rt the CD- R program disc. b) Close the door. c) TV will show:- . disc loading . bank30.rom . writing about 6 seconds. . Done The latest upgraded is in version VER0610. AREA BAND FREQUENCY (Hz) STEP (Hz) 531K1602K9K 530K1710K 10K FM LATAM MW (78) 2- 2 REPAIR INSTRUCTIONS (1 of 2) 2- 2 2- 3 REPAIR IN

22、STRUCTIONS (2 of 2) 2- 3 3- 1 DISASSEMBLY INSTRUCTIONS 1) Open the DVD Tray by using the Open/Close Button while the Set is ON and disconnect the mains supply after removing the Tray Cover. Note: If this is not possible, the DVD Tray has to be open manually. Take a mini screw driver about 2mm diamet

23、er and make a marking 24mm from the tip as shown in figure 2. place the set on its side, insert the mini screw driver till the marking and slide it towards the right as shown in figure 1 until the Tray moves out of the Front Panel. Dismantling of the Front Panel Assembly 2) Return the set to its upr

24、ight position and remove the Tray Cover as shown in Figure 3 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) L

25、oosen 7 screws & lift up the top edge of Front Panel assembly to free some catches before sliding it out towards the front. - 4 screws on the bottom - 1 screw E on the inside as indicated in Figure 8. - 1 screw each on the left & right side 3- 1 Figure 5 Dismantling of the Power Board Figure 4 Figur

26、e 3 Figure 2 Figure 1 1) Loosen 4 screws A to remove the DVD Module as shown in figure 4. Dismantling of the DVD Module A? 1) Loosen 4 screws B at the top of the Power Board as shown in figure 5 Repeat Marking just outside the? slot on the rear cabinet 24mm? 2mm? B? 3- 2 SERVICE POSITIONS Service po

27、sition A Service position B Note: In some service positions the components or copper patterns of one board may risk touching its neighbouring pc boards or metallic parts. To prevent such short- circuit use a piece of hard paper or other insulating material between them. 3- 2 Dismantling of the Tuner

28、 PCB 1) Loosen 10 screw C at the back panel as shown in figure 7. 2) Loosen 6 screw D on the top of main board as shown in figure 8. Figure 7 Figure 8 D C? 4-1 BLOCK DIAGRAM 4-1 4-2 WIRING DIAGRAM 4-2 KEY (CONTROL / STANDBY / VOL) BOARD TABLE OF CONTENTS FTD Display Pin Assignment.5- 1 Pin Connectio

29、n .5- 1 Circuit Diagram .5- 2 PCB Layout Top & Bottom View .5- 3 Electrical Parts List & Voltages .5- 4 5- 1 FTD DISPLAY PIN ASSIGNMENT PIN CONNECTION # Note # 1. Fn:Filament pin 2. NP :No Pin 3. NX :No Extended Pin 4. nG :Grid Pin 5. PN :Anode Pin 5- 1 PIN NO. CONNECTION 123456789101112131415161718

30、19202122312332333435 F1F2NPP1P2P3P4P5P6P7P8P9P10P11P13P12P14P15P16P17P18NX9G8G7G6G5G4G3G2G1GF2F1NPNP 36373839404142434445 NP10G a b c d e f g hk pr sm n j (2G - 10G) Dp? 1G?2G?3G?4G?5G?6G?7G?8G?9G?10G?1G? P2 P1 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 10G9G8G7G6G5G4G3G2G1G a b c d e

31、f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s ColDpCol 5- 25- 2 CIRCUIT DIAGRAM - KEY

32、BOARD ? 1?2?3?4?5?6? 1?2?3?4?5?6? A? B? C? D? E? A? B? C? D? E? C228 104 C226 C227 104 104 1623 C225 C224 104 104 C201?E1? C202?E1? C204?E1? C205?D1? C206?D2? C207?D2? C208?D4? C209?D4? C212?D6? C214?A6? C215?A6? C216?A1? C217?A1? C218?B2? C219?B2? C220?B2? C221?A3? C222?A5? C223?B2? C224?E2? C225?E

33、2? C226?A3? C227?A3? C228?A2? D201?C3? D202?C3? DP201?A4? IC201?E2? IC202?B3? LD201?D6? Q201?D2? Q202?D3? Q203?C4? Q204?D5? Q205?E5? R201?D3? R202?D3? R203?D3? R204?D3? R205?D3? R207?D3? R208?D3? R210?D2? R211?D2? R212?D2? R213?D2? R214?E1? R215?D2? R216?E1? R217?D2? R218?D4? R219?D4? R221?D5? R222?

34、C5? R223?D5? R224?D4? R225?C5? R226?B5? R227?B5? R228?D5? R231?D2 R232?D2 R233?D3 R234?D3 R235?D4 R236?D3 R237?D1 R238?D1 R239?D1 R240?A2? R241?A2? R242?D1 R243?D1 R244?D1 R245?A1? R246?B1? R247?B1? R248?B1? R249?B2? R250?B2? R251?B2? R252?B2? R253?E4? R254?E5? R255?C6 RB201?C6 RB202?B6? RB202A?D5 R

35、B202B?D5 RB203A?A6? RB203B?A6? SN201?C6 TA201?D2 TA202?C2 TA203?C2 TA204?C2 TA205?C2 TA206?D3 TA207?D3 TA208?E6? VR201?A6? XL201?E1? ZD201?D3 ZD202?D4 ZD203?D4 ZD204?C5 PCB LAYOUT - KEY BOARD (BOTTOM) 5- 35- 3 PCB LAYOUT - KEY BOARD (TOP) A B A B 1 23 4 5 1 23 4 5 C201?A2? C202?A2? C205?B2? C206?A2?

36、 C209?A3? C212?B4 C214?A5? C215?A5? C216?A3? C218?A3? C219?A3? C220?A3 C221?A2? C222?A3? C224?B1? C225?A2? C226?A3? C227?B3 C228?B3? IC201?B2? IC202?A3? Q201?A4? Q202?B1? Q203?B5 Q204?B5? Q205?A1? R201?B1? R202?B1? R203?B1? R204?A1 R205?A1? R207?A1? R208?A1? R210?B2? R211?B2? R212?B2 R213?A2? R214?A

37、2? R215?A2? R216?A2? R217?B1? R218?B1 R219?A4? R221?B4? R222?A4? R223?B4? R224?B4? R225?B3 R226?A5? R227?A5? R231?A4? R232?A4? R233?B1? R234?B1 R235?B5? R236?B5? R237?A2? R238?B2? R239?B2? R240?B2 R241?B3? R242?B2? R243?A2? R244?B2? R245?A2? R246?A2 R247?B2? R248?B2? R249?B4? R250?A4? R251?A5? R252?

38、B5 R253?A1? R254?A1? R255?B2 A B A B 1234 5 1234 5 ZD204?A2C204?A2? C207?B1? C208?A3? C217?A2? C223?B3? D201?A4 D202?A4? DP201?B3? LD201?A1? R228?B2? RB201?B2? RB202?B2 RB202A?B1? RB202B?B1? RB203A?A5? RB203B?A5? SN201?A4? TA201?A4 TA202?A5? TA203?B4? TA204?B4? TA205?A4? TA206?B1? TA207?B5 TA208?B1?

39、 VR201?A5? XL201?A2? ZD201?B1? ZD202?A3? ZD203?A4 5-45-4 MISCELLANEOUS ELECTRICAL PARTS LIST - KEY (CONTROL/STANDBY/VOL) BOARD VOLTAGES 5.105.15.15.105.1004.94.95.2000000 PIN12345678910111213141516 VOLTAGE 1718 IC2201 (HT480051) PIN123 VOLTAGE Q2201 (2SA733) 550 550 PIN123 VOLTAGE Q2204 (2SC1623) 55

40、0550 PIN123 VOLTAGE Q2202 (2SA733) PIN123 VOLTAGE Q2203 (2SA733) 4.64.24.2 PIN123 VOLTAGE Q2205 (2SA733) PIN1234567891011121314151617181920 VOLTAGE04.804.83.93.9054.60000-27.8-23.4 18.5 -30.5-30.5-30.5-13.5 PIN2122232425262728293031323334353637383940 VOLTAGE-28.8-23.3-28.2-30.5-28.2-23.3 -22 -16.1 -

41、17 -25.8-29.3 -29-29-29-29-29-29 -28.9 -29-28.9 PIN414243444546474849505152 VOLTAGE -29 -28.9-29.3 29.6 4.804.804.8002.6 IC2202 (PT6311) DP22019965 000 18031VFD 100 x25mm LD22019965 000 17400LED 3 DIA RED ROUND SN22019965 000 23591IRT RECEIV IRM-2038F4 TA22014822 276 13648AI TACT SW SKHVBE3520 ALPS

42、TA22024822 276 13648AI TACT SW SKHVBE3520 ALPS TA22034822 276 13648AI TACT SW SKHVBE3520 ALPS TA22044822 276 13648AI TACT SW SKHVBE3520 ALPS TA22054822 276 13648AI TACT SW SKHVBE3520 ALPS TA22064822 276 13648AI TACT SW SKHVBE3520 ALPS TA22074822 276 13648AI TACT SW SKHVBE3520 ALPS TA22084822 276 136

43、48AI TACT SW SKHVBE3520 ALPS VR22019965 000 23589ENCODER L20 a=12 WITHOUT CC XL22019965 000 23590CRYSTAL 4MHz HC-49US +/-15PPM DIODES D22014822 130 306211N4148 D22024822 130 306211N4148 ZD22014822 130 34233BZX79-B5V1 ZD22029965 000 19397CHIP ZENER 5.6V 5% 0.5W ZD22039965 000 19397CHIP ZENER 5.6V 5%

44、0.5W TRANSISTORS & INTEGRATED CIRCUITS Q22019965 000 141752SA733Q,P Q22029965 000 141752SA733Q,P Q22039965 000 141752SA733Q,P Q22049965 000 20268XISTR NPN SMT TYPE (2SC1623) Q22059965 000 141752SA733Q,P IC22019965 000 23592IC 18 PIN HT48R05A-1 SOP HOLTEK IC22029965 000 20647IC 52 PIN TP6311QH QFP TO

45、PRO Note :Only the parts mentioned in this list are normal service spare parts. TUNER BOARD TABLE OF CONTENTS Tuner adjustment table.6- 1 Voltages List .6- 2 Circuit Diagram.6- 3 PCB Layout View.6- 4 Electrical Parts List & Voltage List .6- 5 6- 1 TUNER ADJUSTMENT TABLE WaverangeInput frequencyInput

46、Tuned toAdjustOutputScope/Voltmeter VARICAP ALIGNMENT AM IF AM RF 3) 108MHz 87.5MHzcheck 6.5V ? 1.2V 1.0V ? 0.5V ? T002 FM 87.5 - 108MHz (50kHz grid) 1602KHz 531KHzT005 1.1V ? 0.5V ? ? ? ? ? ? FM ? 612kHz576kHz 1404kHz T006 1404kHzVC001 AM FM - IF No need ? to adjust FM 10.7MHz, 50mV continuous wave

47、 ? ? 1) If sensitivity of frequency counter is too low adjust to max. channel separation (input signal: stereo left 90% + 9%, adjust output on right channel to minimum) 2) RC network serves for damping the IF- filter while ? adjusting the other one. 3)For AM RF adjustments the original frame antenna has to be used! max. symmetric fo max. symmetric fo f = ? 30kHz VRF as low as possible 200P short circuit to block A