Philips-MRD-120-Service-Manual(1) 电路图 维修手册.pdf

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1、CLASS 1 LASER PRODUCT Service ServiceService ServiceService MRD120/17 /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, electron

2、ic, mechanical, photocopying, or otherwise without the prior permission of Philips. Published by BB- ET0409 Service Audio Printed in The Netherlands Subject to modification. GB 3139 785 30590 DVD Receiver Version 1.0 TABLE OF CONTENTS Page Location of PC Boards.1- 2 Versions Variation fr Reparaturen

3、 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 ricambio identici a quelli specificati. Componenty di sicurezza sono marcati co

4、n !? . 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 0.5mA. CLASS 1 LASER PRODUCT 3122 110 03420 GBWarning ! Invisible laser radiatio

5、n when open. Avoid direct exposure 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

6、semi- conductors are susceptible 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 po

7、tential. F ATTENTION Tous les 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 mass

8、e de lappareil et enfiler le bracelet 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 Behandl

9、ung im Reparaturfall kan die Lebensdauer 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 lase

10、rstrling ved bning nr sikkerhedsafbrydere 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, connec

11、tion box, estention cable and 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, et

12、c. setting procedure After replacement / 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 2PA

13、L 3AUTO Menu/ Audio Subtitle (AS) Language 1English 2English 3English 4English AFS 001LX3000D/LX3500D /MRD200 002MX3600D/MX3800 003LX3700D/LX3750W 005MRD210 006MX3660D 008FW- D550 010MRD120/MX6050 oem derivative 08 . region code = 1 digit . tv system = 1 digit . as/menu lang = 1 digit . AFS = archit

14、echture Feature Set = 3 digits This field is used to define the architecture / 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 DIS

15、C source, stop mode and no disc in tray. b) Press R/C Play - 159- PLAY to reset 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

16、 OK to confirm. TV show TUNER AREA CHANGED If you didnt press it in five seconds, the system will remain original status. 87.5M 108M 50K 87.5M 108M 50K 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 a

17、s below :- a) Put the player in stop mode. No disc loaded. b) Press the following key on remote control: For MRD120 /17 (US) : For MRD120 /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

18、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 CAUTION ! This information is confidencial and may not b

19、e distributed. Only a qualified service person should reprogram the Region Code. 5. Video Out Change a) Press 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

20、the and button on R/C c) Go feature setup page select PASSWORD. TV show ENTER CODE.Press 4 times of STOP button 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 th

21、e remote control. c) TV will show the version on screen. 8. Upgrading new software a) Open the door, then insert 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 VER0226. AREA BAND FREQUENCY (

22、Hz) STEP(Hz) 531K1602K9K 530K1710K 10K MW 531K 1602K 9K 530K 1710K 10K FM FM LATAM (78) USA (17) AM 2- 2 REPAIR INSTRUCTIONS (1 of 2) 2- 2 2- 3 REPAIR INSTRUCTIONS (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 m

23、ains 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 diameter 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

24、 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 upright 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 T

25、op 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 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 botto

26、m - 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 Figure 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 24mm? 2mm? Repeat Marking j

27、ust outside the? slot on the rear cabinet A? B 1) Loosen 4 screws B at the top of the Power Board as shown in figure 5 3- 2 SERVICE POSITIONS Service position A Service position B Note: In some service positions the components or copper patterns of one board may risk touching its neighbouring pc boa

28、rds 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 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

29、 8 C D 4- 1 BLOCK DIAGRAM 4- 1 4- 2 WIRING DIAGRAM 4- 2 JK501 KEY (CONTROL / STANDBY / VOL) BOARD TABLE OF CONTENTS FTD Display Pin Assignment.5- 1 Pin Connection .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

30、 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 12345678910111213141516171819202122312332333435 F1F2NPP1P2P3P4P5P6P7P8P9P10P11P13P12P14P15P16P17P18NX9G8G7G6G5G4G3G2G1GF2F1NPNP 36373839404142434445 NP10G a b c d e f

31、 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 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

32、 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 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

33、? 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?E2? 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?D

34、3? 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?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?

35、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 RB202B?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?

36、D3 ZD202?D4 ZD203?D4 ZD204?C5 PCB LAYOUT - KEY BOARD (BOTTOM) 5- 35- 3 PCB LAYOUT - KEY BOARD (TOP) 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?

37、A4 TA202?A5? TA203?B4? TA204?B4? TA205?A4? TA206?B1? TA207?B5 TA208?B1? VR201?A5? XL201?A2? ZD201?B1? ZD202?A3? ZD203?A4 A B A B 1 23 4 5 1 23 4 5 C201?A2? C202?A2? C205?B2? C206?A2? 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? C2

38、27?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?A2? 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?

39、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?B5 R253?A1? R254?A1? R255?B2 5-45-4 MISCELLANEOUS ELECTRICAL PARTS LIST - KEY (CONTROL/STANDBY/VOL) BOARD DP2019965 00

40、0 18031VFD 100X25MM LD2019965 000 17400LED 3 DIA RED ROUND TA2014822 276 13648AI TACT SW TA2024822 276 13648AI TACT SW TA2034822 276 13648AI TACT SW TA2044822 276 13648AI TACT SW TA2054822 276 13648AI TACT SW TA2064822 276 13648AI TACT SW TA2074822 276 13648AI TACT SW TA2084822 276 13648AI TACT SW V

41、R2019965 000 23589ENCODER L20 A=12 WITHOUT CC XL2019965 000 23590CRYSTAL 4MHZ HC-49US +/-15PPM DIODES D2014822 130 306211N4148 D2024822 130 306211N4148 SN2019965 000 23591IRT RECEIV IRM-2038F4 ZD2014822 130 34233BZX79-B5V1 ZD2024822 130 34233BZX79-B5V1 ZD2034822 130 34233BZX79-B5V1 ZD2044822 130 342

42、33BZX79-B5V1 TRANSISTORS & INTEGRATED CIRCUITS Q2019965 000 141752SA733Q,P Q2029965 000 141752SA733Q,P Q2039965 000 141752SA733Q,P Q2049965 000 20268XISTR NPN SMT TYPE (2SC1623) Q2059965 000 141752SA733Q,P IC2019965 000 23592IC 18PIN HT48R05A-1 SOP HOLTEK IC2029965 000 23593IC 52PIN HT16511 QFP HOLT

43、EK Note :Only the parts mentioned in this list are normal service spare parts. VOLTAGES 00003.83.803.83.70000 019.7-22.2-22-11.2-19.9 -17.8 -21 -15.6 -13.4 -20 -13.4 -20-22.4 -18-20.3 -13.6 -15.8 -11.4 -4.6 -22.6 -20.4 004.6 5.10 -20.4 -20.4 -20.4 -20.4 -20.4 -20.4-20.4-20.4-20.54.64.64.64.64.6 5.15

44、.15.105.1004.94.95.2000000 PIN1234567891011121314151617181920 VOLTAGE PIN2122232425262728293031323334353637383940 VOLTAGE PIN414243444546474849505152 VOLTAGE PIN12345678910111213141516 VOLTAGE 1718 IC2202 (PT16511) IC201 (HT480051) PIN123 VOLTAGE Q2201 (2SA733) 550 550 PIN123 VOLTAGE Q2204 (2SC1623)

45、 550550 PIN123 VOLTAGE Q2202 (2SA733) PIN123 VOLTAGE Q2203 (2SA733) 4.64.24.2 PIN123 VOLTAGE Q2205 (2SA733) 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 W

46、averangeInput frequencyInputTuned 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

47、, 50mV continuous wave ? ? 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. symme