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Philips MMX450/37 Service Manual
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Philips MMX450/37 Service Manual

Digitale a/v surround receiver
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DIGITALE A/V SURROUND RECEIVER
Service Manual
Safety regulations require that the set be restored to its original
condition and that parts which are indentical with those specified
be used.
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, mechanical, photocopying,
or otherwise without the prior permission of Philips.
Published by MD 0309 Service Audio
TABLE OF CONTENTS
Location Boards / System info ................................................... 1-2
Technical Specification .............................................................
Service Tool / Measurement setup / Safety ..............................
Warning / Handling Chip components ......................................
Abbreviations ............................................................................
Block diagram ............................................................................
Dismantling hints / Service positions .........................................
Wiring diagram ..........................................................................
Service Test program .................................................................
Front Board ...............................................................................
ECO 5 Tuner diagram ...............................................................
Multi-Channel Decoding Module ................................................
Mains Board ..............................................................................
Mono Board ...............................................................................
Exploded view ...........................................................................
Exploded view partslist ..............................................................
Electrical partslist Mono Board .................................................
Printed in the Netherlands
Subject to modification
MMX450
MFX450
Page
1-3
1-4
1-5
2
3
4-1
4-3
5
6
7
8
9
10
11
12
13
3104 215 50220
/37
/17

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Summary of Contents for Philips MMX450/37

  • Page 1 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, mechanical, photocopying, or otherwise without the prior permission of Philips.
  • Page 2 LOCATION OF PRINTED CIRCUIT BOARDS Screw Terminal Tuner Board MDM Board Mains Board P50 & Subw. & Video Selector Board Secondary Trafo Board Mono Board Headphone Board Front Board...
  • Page 3 SPECIFICATION General Tone controle Mains voltage : 120V Loudness (volume ≤ -30dB Ref: 1kHz=0dB) : 100Hz +6 dB Mains frequency : 60Hz : 10kHz +2,5 dB Tone control (Ref: 1kHz=0dB) : ≤ 2W at stby Power concumption : Bass 100Hz -9dB +9dB Dimension.
  • Page 4 SERVICE TOOL Audio Signals Test Disc 1 ......... 4822 397 30184 MEASUREMENT SETUP Tuner FM Bandpass LF Voltmeter 250Hz-15kHz e.g. PM2534 e.g. 7122 707 48001 RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Tuner AM (MW,LW) Bandpass LF Voltmeter...
  • Page 5 WARNING GB WARNING NL WAARSCHUWING All ICs and many other semiconductors are susceptible to Alle IC´s en vele andere halfgeleiders zijn gevoelig voor electrostatic discharges (ESD). Careless handling during electrostatische ontladingen (ESD). repair can reduce life drastically. Onzorgvuldig behandelen tijdens reparatie kan de levensduur When repairing, make sure that you are connected with the drastisch doen vermindern.

  • Page 6: Abbreviations

    ABBREVIATIONS ac 0VA AC 0 Voltage p gnd P50 ground ac 10VB AC 10 Voltage p p50 Cinema link P50 code ac 110VB AC 110 Voltage ac 120VB AC 120 Voltage ac gnd AC ground s gnd Surround ground ac h1 AC high voltage 1 sofac scl Sofac...

  • Page 7: Block Diagram

    BLOCKDIAGRAM +12sel Tuner 7501 7621/7622 control ECO5 Headphone Mute 1424 7503 3301 7601 Headphone 7301 +5mute 7641 CDR/Tape 7651/7652 Left 7657 BASS -12V +6 only in /00 SPKR GAIN LOUD MUTE TREBLE L/R in 7572-b Sofac LOGIC CONTROL 7504 control MDM 2000 Right SDA1...

  • Page 8: Dismantling Of Mainstrafo

    DISMANTLING HINTS Dismantling of Front Dismantling of mono board Service position monoboard 1) Remove front . See picture 1 2) Remove whole front (disconnect the wires on the mono 1) Bring front in position as shown in picture 6 board coming from front) 2) Snap nok of front in bottom to make front stable .
  • Page 9 DISMANTLING HINTS WIRING DIAGRAM TUNER MAINS Dismantling of MDM module 4 XH 6 XH 4 XH relay 1) Remove all the screws mentionned in the arial . See picture 11 tu_stereo gnd_s tu_l tu_clk tu_gnd 12/JQ tu_da 1523 1521 0051 tu_r tu_en tu_rds...

  • Page 10: Service Test Program

    SERVICE TEST PROGRAM To start service test program hold Bass & Treble depressed while switching the mains on stands for Service Testprogram Display shows the following message stands for Software Version "S-9xx-Vzz" version number counted from 01 upwards DISPLAY TUNER TEMP.

  • Page 11: Front Board

    FRONT BOARD TABLE OF CONTENTS FTD Display pin connections........Headphone & Led board layout ......Circuit diagram Part A ..........Circuit diagram Part B ..........Component layout ............. Partslist ...............
  • Page 12 FTD DISPLAY PIN CONNECTIONS DIGITAL SURROUND PRESET SENS HILO STEREO NEWS COAX 12 OPT 12 MENU SMART SOUND HALL MATRIX NIGHT DOWNMIX LOUDNESS CINEMA LINK 4G~11G 13G ,14G 15G MATRIX DOWNMIX COAX NIGHT (coax) (coax) CINEMA LINK (opt) HALL (opt) LOUDNESS NEWS PRESET...
  • Page 13 HEADPHONE BOARD - COMPONENT VIEW U1 C1 1424 A1 1425 A1 1427 A1 1428 C1 HEADPHONE BOARD - COPPER SIDE VIEW 2427 A1 2430 D1 2445 A1 2447 A1 2448 C1 2449 C1 2450 C1 2451 D1 3471 A1 3477 D1 4450 D1 LED BOARD - COMPONENT VIEW...
  • Page 14 FRONT PART FR965 - FR975 - MFX450 Part A Part A 2441 2440 1401 1433 3403 3405 220p 220p 7402 7415 3499 stereo PDTA144ET TMP87CS71F stereo 470E 5403 3392 3498 µ tu clk 1400 tu clk 470E 3391 amp stby 3497 AT-5I tu de...
  • Page 15 1400 3418 7404 1401 3419 7405 Part B FRONT PART FR965 - FR975 - MFX450 Part B 1424 1402 3420 7406 HEADPHONE 1403 3421 7407 1404 3422 7408 1405 3423 7409 1406 3424 7411 1439 1437 1436 1425 1407 3426 7412 7415 TMP87CS71F...
  • Page 16 This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic diagram respectively partslist. This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic diagram respectively partslist.
  • Page 17 ELECTRICAL PARTSLIST - FRONT BOARD 3449 4822 117 10837 100K 0.1W 3777 4822 051 20333 33K00 0,1W 2461 5322 122 32654 CER2 0805 X7R 63V 22N PM10 R MISCELLANEOUS 2462 5322 122 31647 1NF10%X7R 3451 4822 117 10833 0,1W 3778 4822 051 20333 33K00 0,1W...
  • Page 18 TUNER BOARD ECO5 TABLE OF CONTENTS Adjustmanttable ............Blockdiagram ............Circuit diagram ............Component layout ........... Partslist ..............
  • Page 19 TUNER ADJUSTMENT TABLE ( ECO5 FM/MW- and FM/MW/LW - versions with AM-frame aerial ) Waverange Input frequency Input Tuned to Adjust Output Scope/Voltmeter VARICAP ALIGNMENT 8V ±0.2V 108MHz 5130 87.5 - 108MHz 4.3V ±0.5V 87.5MHz (65.81 - 74, 87.5 - 108MHz) check (1.2V ±0.5V) (65.81MHz)
  • Page 20 BLOCKDIAGRAM TUNER BOARD ECO 5 systems buffer ampl. Vcc1 Stab Stab Discriminator Vcc2 FM-RF (MPX) 1101 Loop 1124 (1102) LF filter 10,7 MHz 10,7 MHz 10,7 MHz right right Stereo left left Decoder Det. frontend Mixer stereo Version FM-Osc. RADIO IC Pre- Osc.
  • Page 21 TUNER BOARD ECO5 / Systems 1101 A 1 1102 B 2 1103 D 2 VERSION PROGRAMMING COMPONENTS 1121 E20 AM-IF1 AM-IF2 1124 G20 5111 5112 1126 E20 T046 1101 1130 I20 T001 6120 3156 3157 3170 remark 9128 1131 I20 450 kHz 450 kHz 2101 C 6...
  • Page 22 2101 C4 1101 A 1 2106 C2 2137 C5 3149 C5 3173 A 5 5114 C4 5130 A 3 7104 C2 9117 B 2 9129 B 3 2118 B 4 2139 B 2 2153 C3 2166 B 2 3112 A 3 3123 A 3 3143 C2 3175 A 2...
  • Page 23 ELECTRICAL PARTSLIST - ECO5 TUNER BOARD MISCELLANEOUS RESISTORS 1101 482226731505 Antenna Socket 300R only in /17 3101 482205120333 33K00 0,1W 5121 482224210261 Quartz 75kHz 1102 482226710283 Antenna Socket 75R only in /01 3102 482205120104 100K00 0,1W 5123 482215760517 Osc Coil MW 3103 482211710965 0,1W...

  • Page 24: Multi-Channel Decoding Module

    MULTI-CHANNEL DECODING MODULE TABLE OF CONTENTS Troubleshooting ............8-2 Block-diagram ............Partslist ..............8-4...
  • Page 25 *Audio SignalsTest Disc 1 Replace MDM Can sound be heard on ALL module Channels ? SPDIF - Sony Philips Digital Inter Face Does a valid SPDIF -signal, Replace MDM *Audio Signals Test Disc 1 = SBC429 containing a sine-wave of 1kHz...
  • Page 26 BLOCK-DIAGRAM...
  • Page 27 ELECTRICAL PARTSLIST - MDM MODULE 1003 3104 217 06780 MDM MODULE for FR965 2702 4822 123 14025 16V 2200U 20% 1701 4822 252 51172 FUSE 0,315A 1702 4822 252 51172 FUSE 0,315A 6800 4822 218 11487 CONN. FIBER-GLASS GP1F32R 1704 2422 543 01118 CRYSTAL 16MHZ 1705 2422 543 01132 CRYSTAL 12MH28...

  • Page 28: Mains Board

    MAINS BOARD TABLE OF CONTENTS Circuit diagram .............. 9-2 Component layout ............Component Layout Trafo board ........ Partslist .................

  • Page 29: Mono Board

    0051 D9 1051 B1 1052 D1 MAINS BOARD 1053 C1 1054 D1 1055 B5 Stand by Relais 1056 A2 1062 1057 D9 1061 A1 1062 A3 1061 1056 1063 B6 9053 9055 1064 C6 LIVE 1065 B6 not for /21 9056 9052 NEUTRAL...
  • Page 30 Mainsboard Copperside view Mainsboard Componentside view Transistor pinning This assembly drawing shows a summary Transistor pinning This assembly drawing shows a summary of all possible versions. of all possible versions. For components used in a specific version For components used in a specific version see schematic diagram respectively partslist.
  • Page 31 TRAFO BOARD Copperside view Componentside view Interconnection Board Interconnection Board Transformer secondary Transformer secondary Interconnection Board Interconnection Board Transformer primary Transformer primary...
  • Page 32 ELECTRICAL PARTSLIST - MAINS BOARD MISCELLANEOUS 1052 4822 265 11605 MAINS OUTLET 1056 4822 276 13224 MAINS SWITCH 1061 4822 265 20723 MAINS INLET 1062 4822 280 10391 RELAY 1064 4822 265 20723 B2P3-VH 1066 4822 253 10126 FUSE 4A 1069 4822 071 53151 FUSE 315mA...
  • Page 33 MONO2 BOARD TABLE OF CONTENTS Measurement hint ..........10-1 10-2 Circuit diagram Supply ..........10-3 Circuit diagram Amplifier .......... 10-4 Circuit diagram Source selector ......10-5 Circuit diagram Volume controle Part A ....10-6 Circuit diagram Volume controle Part B ....10-7 P50/Speaker/Video Selector layout ......
  • Page 34 10-1 MEASUREMENT REFERENCES TO LAYOUT ON PAGE 10-9 IC7643 IC 7643 Can be measure via Test point Funtionality on component side monoboard TP 47 MDM Surround L in TP 48 6 CH Surround L in TP 50 MDM Surround R in TP 51 6 CH Surround R in TP 52...
  • Page 35 10-2 MEASUREMENT REFERENCES TO LAYOUT ON PAGE 10-9 IC7641 IC7642 IC 7641 Can be measure via Test point Can be measure via Test point IC 7642 Funtionality Funtionality on component side monoboard on component side monoboard TP 24 4,7V TP 1 Left in TP 25 MDM Center in...
  • Page 36 10-3 1252 1258 2257 2269 2276 2283 3257 3269 3291 6255 6261 6274 7252 7910 1253 1260 2259 2270 2277 2287 3258 3270 3292 6256 6262 6275 7253 9251 1254 1261 2260 2271 2278 2290 3261 3271 3293 6257 6263 6276 7254 9252...
  • Page 37 10-4 10-4 1301 3359 1302 3360 LEFT & RIGHT & CENTER AMPLIFIER FR965 - MFX450 1305 3361 1901 3362 +39,5V 2313 1902 3363 3310 9304 Left in 2280 3901 220p 7301 from Left out +40V 2297 3902 STK496-270 2307 2315 IN_LR 2298 3903...
  • Page 38 10-5 10-5 1511 3557 1512 3566 SOURCE SELECTOR PART FR965 - FR975 - MFX450 1513 3567 1514 3571 1511 1515b K1 3572 3950 Tuner L 1516 3573 +12V +12sel 2508 3574 +12V 7501 2509 3575 2511 +..V 3513 LC7821 2510 3576 Tuner 100p...
  • Page 39 10-6 10-6 1502 2694 3664 6650 2871 3883 2877 2533 1503 2695 3665 6801 Left 1515a A23 2696 3666 6802 VOLUME CONTROL PART FR965 - FR975 - MFX450 - Part A µ 100n 1520 2697 3667 6803 2695 3871 3873 3659 3671 1521...
  • Page 40 10-7 10-7 VOLUME CONTROL PART FR965 - FR975 - MFX450 - Part B 1502 2694 3664 6650 3673 Left 1503 2695 3665 6801 Left 1515a A23 2696 3666 6802 +9V Voltage Regulator 7651 1520 2697 3667 6803 HEADPHONE AMPLIFIER 3891 BC817-40 3629 Left...
  • Page 41 10-8 SPEAKER BOARD - COMPONENT VIEW & COPPER SIDE VIEW P50/RC5 / VIDEO SELECTOR BOARD - COMPONENT VIEW & COPPER SIDE VIEW This assembly drawing shows a summary of all versions. For components used in a specific version see schematic diagram and respective partslist.
  • Page 42 10-9 10-9 MONO2 BOARD - COMPONENT SIDE VIEW This assembly drawing shows a summary of all versions. For components used in a specific version see shematic diagram and respective partslist.
  • Page 43 10-10 10-10 MONO2 BOARD - MAPPING COMPONENT SIDE VIEW MONO2 BOARD - MAPPING COPPER SIDE VIEW 9619 D4 1251 E8 2306 G7 2643 C6 3271 E4 5306 F4 9272 F8 9536 C1 2257 G2 2550 C5 2862 B3 3295 G1 3546 C5 3644 C3 3879 A3...
  • Page 44 10-11 10-11 MONO2 BOARD - COPPER SIDE VIEW This assembly drawing shows a summary of all versions. For components used in a specific version see shematic diagram and respective partslist.
  • Page 45 11-1 11-1 Mains 8020 board Tuner Front Video Selector MDM module Mono board FR965 - MFX450...
  • Page 46 12-1 PARTSLIST - EXPLODED VIEW MECHANICAL PARTS 3104 217 53421 FRONT CABINET ASSY 4822 410 12442 BUTTON HINGE ASSY SURR. 4822 410 12435 BUTTONS HINGE TUNER 4822 410 12443 BUTTON HINGE ASSY MENU 4822 410 12436 BUTTONS HINGE BT 4822 410 12437 BUTTONS EASY LINK 4822 380 10274 LIGHT GUIDE SURROUND...
  • Page 47 13-1 ELECTRICAL PARTSLIST - MONO2 BOARD MISCELLANEOUS CAPACITORS 2315 4822 124 40433 47UF20% 1256 4822 252 51173 FUSE 1A 2316 4822 124 40248 10UF20% 1258 4822 071 51602 FUSE 1.6A 2317 5322 126 10223 4,7NF10%X7R 63V 1260 4822 252 51123 FUSE 6,3A 2319 5322 122 32268...
  • Page 48 13-2 ELECTRICAL PARTSLIST - MONO2 BOARD CAPACITORS CAPACITORS 2534 4822 124 81151 22UF 2605 4822 126 13692 47PF 1% NP0 63V 2535 4822 124 81151 22UF 2606 4822 126 13692 47PF 1% NP0 63V 2536 4822 124 81151 22UF 2607 4822 124 41751 47UF 20% 2537...
  • Page 49 13-3 ELECTRICAL PARTSLIST - MONO2 BOARD CAPACITORS CAPACITORS 2668 4822 121 43526 47NF 5% 250V 2851 5322 122 32658 22PF 5% 50V 2669 4822 121 43526 47NF 5% 250V 2852 5322 122 32658 22PF 5% 50V 2670 4822 121 43526 47NF 5% 250V 2853...
  • Page 50 13-4 ELECTRICAL PARTSLIST - MONO2 BOARD CAPACITORS RESISTORS 2931 5322 122 32531 100PF 5%NP0 50V 3328 4822 052 10479 47R00 5% 0,33W 2932 5322 122 32531 100PF 5%NP0 50V 3329 4822 117 10837 100K 1% 0.1W 2933 5322 122 32531 100PF 5%NP0 50V 3330 4822 117 10833...
  • Page 51 13-5 ELECTRICAL PARTSLIST - MONO2 BOARD RESISTORS RESISTORS 3612 4822 117 10834 1% 0,1W 3539 4822 051 20822 8K20 5% 0,1W 3613 4822 051 20471 470R00 5% 0,1W 3540 4822 051 20822 8K20 5% 0,1W 3614 4822 051 20471 470R00 5% 0,1W 3541 4822 051 20393 39K00 5% 0,1W...
  • Page 52 13-6 ELECTRICAL PARTSLIST - MONO2 BOARD RESISTORS RESISTORS 3682 4822 117 11373 100R 1% RC12H 0805 3880 4822 051 20332 3K30 5% 0,1W 3683 4822 117 10834 1% 0,1W 3881 4822 051 10102 1K00 2% 0,25W 3684 4822 117 10834 1% 0,1W 3882 4822 051 10102...
  • Page 53 13-7 ELECTRICAL PARTSLIST - MONO2 BOARD RESISTORS RESISTORS 3952 4822 117 11373 100R 1% RC12H 0805 4642 4822 051 20008 0R00 JUMP. (0805) 3953 4822 117 11373 100R 1% RC12H 0805 4644 4822 051 20008 0R00 JUMP. (0805) 3954 4822 117 11373 100R 1% RC12H 0805 4651 4822 051 20008...
  • Page 54 13-8 ELECTRICAL PARTSLIST - MONO2 BOARD TRANSISTORS & ICs DIODES 6641 4822 130 83757 MCL4148 7655 4822 130 42615 BC817-40 6642 4822 130 30621 1N4148 7656 4822 130 42615 BC817-40 6643 4822 130 30621 1N4148 7657 4822 130 60373 BC856B 6644 4822 130 30621 1N4148...

This manual is also suitable for:

Mfx450/17