Philips MX-975-D Service Manual
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Philips MX-975-D Service Manual

Philips MX-975-D Service Manual

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Download this manual See also: User Manual
Color Television
Service
Service
Service
ServiceManual
Contents
4. Mechanical Instructions
6. Block Diagrams and Testpoints
7. Electrical Diagrams and PWB's
WIRING DIAGRAM
FRONT PANEL & HEADPHONE BOARD SCHEMATIC
FTD DISPLAY PIN CONNECTIONS
TUNER BOARD SCHEMATIC - EC05 TUNER
MULTI-CHANNEL DECODER MODULE
MAINS SUPPLY BOARD SCHEMATIC
MAINS TRANSFORMER SCHEMATIC
MONO BD - VOLUME CONTROL PART SCHEMATIC
MONO BD - SUPPLY PART SCHEMATIC
MONO BD. - SOURCE SELECTOR PART SCHEMATIC
MONO BD. - L&R CENTER AMP PART SCHEMATIC (FR960)
MONO BD. - L&R CENTER AMP PART SCHEMATIC (FR970, MX975D) 12
FRONT PANEL PCB (TOP VIEW)
FRONT PANEL PCB (BOTTOM VIEW)
HEADPHONE/FRONT AV/LED PCBs (BOTH VIEWS)
MAINS SUPPLY PCB (TOP VIEW)
MAINS SUPPLY PCB (BOTTOM VIEW)
MAINS TRANSFORMER PCBs (BOTH VIEWS)
SCREW TERMINAL PCB (BOTH VIEWS)
P50/RC5/VIDEO SELECTOR PCBs (BOTH VIEWS)
MONO BOARD PCB (TOP VIEW)
MONO BOARD PCB (BOTTOM VIEW)
8. Adjustments
10. Spare Parts List
©
Copyright 2001 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 means, electronic, mechanical,
photographic, or otherwise without the prior permission of Philips.
Published by Philips Consumer Electronics
Contents
00
00
Diagram PWB
1
0
2
7
3
13
4
101
5
0
6
16
7
18
8
0
9
21
10
21
11
0
0
13
0
14
15
16
17
18
19
20
21
22
00
00
Subject to modification
Chassis
FR970/17
1931
2005 Nov 10

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Summary of Contents for Philips MX-975-D

  • Page 1 10. Spare Parts List © Copyright 2001 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 means, electronic, mechanical, photographic, or otherwise without the prior permission of Philips.

  • Page 2: Safety Checks

    GENERAL SAFETY NOTES IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** equipment. The service procedures recommended by Philips and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose.

  • Page 3: Fire And Shock Hazard

    PICTURE TUBE REPLACEMENT PARTS REPLACEMENT FIRE AND SHOCK HAZARD 1. Be sure all components are positioned in such a way as to avoid the possibility of adjacent component shorts. This is especially important on those chassis which are transported to and from the service shop.

  • Page 4: Leakage Current Cold Check

    X-RADIATION 1. Be sure procedures and instructions to all your service personnel cover the subject of X-radiation. Potential sources of X-rays in TV receivers are the picture tube and the high voltage circuits. The basic precaution which must be exercised is to keep the high voltage at the factory recommended level. 2.

  • Page 5: Leakage Current Hot Check

    jumper from the ac line cord. LEAKAGE CURRENT HOT CHECK 1. Do not use an isolation transformer for this test. Plug the completely reassembled receiver directly into the ac outlet. 1.5k, 1OW resistor 0.15uF. capacitor 2. Connect a paralleled by a between each exposed good earth ground metallic cabinet part and a...

  • Page 6: Picture Tube Replacement

    The use of a substitute part which does not have the same safety characteristics as the Philips recommended replacement part shown in this service manual may create shock, fire, or other hazards...

  • Page 7: Important Safety Precautions

    IMPLOSION X-RADIATION PICTURE TUBE REPLACEMENT PARTS REPLACEMENT WARNING Before removing the CRT anode cap, turn the unit OFF and short the HIGH VOLTAGE to the CRT DAG ground. SERVICE NOTE: The CRT DAG is not at chassis ground. TV-VCR COMBI SAFETY NOTES IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold.
  • Page 8 OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES. d. X-Radiation and High Voltage Limits - Because the picture tube is the primary potential source of X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions. For continued X-radiation protection, the replacement picture tube must be the same type as the original.

  • Page 9: Precautions During Service

    6. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts - be sure that leads and components do not touch thermally hot parts, c. the ac supply, d. high voltage, and e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring.

  • Page 10: Safety Check After Servicing

    Replacement procedure 1) Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector (discard it). 2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.
  • Page 11 LEAKAGE CURRENT CHECKS VCR SAFETY NOTES FIRE & SHOCK HAZARD (VCR) 1. Be sure that all components are positioned in such a way to avoid possibility of shorts to adjacent components. This is especially important on those chassis which are transported to and from the repair shop.

  • Page 12: Important Notice

    Power Supply-This receiver is designed for operation on 120 Volts, 6OHz alternating current (ac) only. Never connect to a supply having a different frequency or voltage. IMPORTANT NOTICE This device employs many circuits, components, and mechanical parts designed for protection against fire, shock and RF interference.
  • Page 13 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION : Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
  • Page 40 MAIN SYSTEM EXPLODED VIEW...

  • Page 41: General Information

    General Information Manual 1931 – FR960, FR970, & MX975D Display FR970 Product View System Information Note: USA Version - MX975D/37 utilizes the FR970/17 Receiver Front Speaker Center Box Surround Box Subwoofer MX975D/21 include: FR970/01B 2 x MX975D MX975D MX975D FB201V/01 MX975D/37 include: FR970/17 2 x MX975D...

  • Page 42: Handling Chip Components

    Display FM Tuner Setup Display AM Tuner Setup Handling Chip Components Display Chip Handling Procedures Abbreviations ac 0VA AC 0 Voltage ac 10VB AC 10 Voltage ac 110VB AC 110 Voltage ac 120VB AC 120 Voltage ac gnd AC ground ac h1 AC high voltage 1 ac h2...
  • Page 43 ls l Loudspeaker Left ls r Loudspeaker Right Multi channel Decoding Module mdm c out --- Center out mdm gnd --- ground mdm l dmix --- Downmix Left mdm l in --- Left in mdm l out --- Left out mdm r dmix --- Downmix Right mdm r in...
  • Page 44 Display FR960Product Specifications...
  • Page 45 Display FR970Product Specifications...
  • Page 46 Display FM Tuner Setup...
  • Page 47 Display AM Tuner Setup...
  • Page 48 Display Chip Handling Procedures...

  • Page 49: Adjustment Procedures

    ADJUSTMENT PROCEDURES Display Location of Printed Circuit Boards Safety & ESD Notices SAFETY Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified be used. Safety components are marked by the symbol WARNING WARNING All ICs and many other semiconductors are susceptible to...
  • Page 50 Display Overall Block Diagram...
  • Page 51 Display ECO 5 Tuner Board Block Diagram...
  • Page 52 Display Multi-Channel Decoder Block Diagram...
  • Page 53 Display Service Test Program...
  • Page 54 Display ECO 5 Tuner Adjustment Table...
  • Page 55 Dislay MDM Troubleshooting Chart...
  • Page 56 All Models (1931) - WIRING DIAGRAM...

  • Page 57: Front Panel & Headphone Board Schematic 2

    All Models (1931) - FRONT PANEL & HEADPHONE BOARD SCHEMATIC...

  • Page 58: Ftd Display Pin Connections 3

    All Models (1931) - FTD DISPLAY PIN CONNECTIONS...

  • Page 59: Tuner Board Schematic - Ec05 Tuner 4

    All Models (1931) - TUNER BOARD SCHEMATIC - EC05 TUNER...

  • Page 60: Multi-Channel Decoder Module 5

    All Models (1931) - MULTI-CHANNEL DECODER MODULE...

  • Page 61: Mains Supply Board Schematic 6

    All Models (1931) - MAINS SUPPLY BOARD SCHEMATIC...

  • Page 62: Mains Transformer Schematic 7

    All Models (1931) - MAINS TRANSFORMER SCHEMATIC...

  • Page 63: Mono Bd - Volume Control Part Schematic 8

    All Models (1931) - MONO BD - VOLUME CONTROL PART SCHEMATIC...

  • Page 64: Mono Bd - Supply Part Schematic 9

    All Models (1931) - MONO BD - SUPPLY PART SCHEMATIC...
  • Page 65 All Models (1931) - MONO BD. - SOURCE SELECTOR PART SCHEMATIC...
  • Page 66 All Models (1931) - MONO BD. - L&R CENTER AMP PART SCHEMATIC (FR960)
  • Page 67 All Models (1931) - MONO BD. - L&R CENTER AMP PART SCHEMATIC (FR970, MX975D)
  • Page 68 All Models (1931) - FRONT PANEL PCB (TOP VIEW)

  • Page 69: Front Panel Pcb (Bottom View)

    All Models (1931) - FRONT PANEL PCB (BOTTOM VIEW)

  • Page 70: Headphone/Front Av/Led Pcbs (Both Views)

    All Models (1931) - HEADPHONE/FRONT AV/LED PCBs (BOTH VIEWS)

  • Page 71: Mains Supply Pcb (Top View)

    All Models (1931) - MAINS SUPPLY PCB (TOP VIEW)

  • Page 72: Mains Supply Pcb (Bottom View)

    All Models (1931) - MAINS SUPPLY PCB (BOTTOM VIEW)

  • Page 73: Mains Transformer Pcbs (Both Views)

    All Models (1931) - MAINS TRANSFORMER PCBs (BOTH VIEWS)

  • Page 74: Screw Terminal Pcb (Both Views)

    All Models (1931) - SCREW TERMINAL PCB (BOTH VIEWS)

  • Page 75: P50/Rc5/Video Selector Pcbs (Both Views)

    All Models (1931) - P50/RC5/VIDEO SELECTOR PCBs (BOTH VIEWS)

  • Page 76: Mono Board Pcb (Top View)

    All Models (1931) - MONO BOARD PCB (TOP VIEW)

  • Page 77: Mono Board Pcb (Bottom View)

    All Models (1931) - MONO BOARD PCB (BOTTOM VIEW)
  • Page 78 FR960PBK - Manual no. 1931 FRONT BOARD ELECTRICAL PARTS LIST 2470 100pF 5% NP0 50V ..5322 122 32531 2471 100pF 5% NP0 50V ..5322 122 32531 FRONT BOARD ELECTRICAL PARTS LIST 2472...
  • Page 79 FR960PBK (continued) 3484 0,25W... . 4822 051 10102 7403 IC, GP1U28XP ... . 4822 130 10165 3485 0R0 JUMP. (0805) ..4822 051 20008 7404 IC, SAA6579T .
  • Page 80 FR960PBK (continued) 3128 2k2 1% 0,1W, for LW version..4822 117 11449 MISCELLANEOUS 3132 47R 5% 0,5W... . . 4822 116 52195 S 1051 MAINS OUTLET ... . 4822 267 31994 3134 220k 5% 0,1W .
  • Page 81 FR960PBK (continued) 2274 470nF 10% 16V... . 4822 126 14583 2555 100nF Y5V 50V P80M20..4822 126 13838 2275 1000uF 16V... . . 4822 124 81144 2556 100nF Y5V 50V P80M20 .
  • Page 82 FR960PBK (continued) 2668 47nF 5% 250V... . 4822 121 43526 2912 22uF 50V....4822 124 81151 2669 47nF 5% 250V.
  • Page 83 FR960PBK (continued) 3517 0,1W... . 4822 051 20393 S 3629 0,33W ... 4822 052 10109 3519 0,1W... . 4822 117 10965 3630 0,4W .
  • Page 84 FR960PBK (continued) 3877 0,25W... . 4822 051 10102 4524 0R0 JUMP. (0805) ..4822 051 20008 3878 0,25W... . 4822 051 10102 4526 0R0 JUMP.
  • Page 85 FR960PBK (continued) 6644 DIODE, 1N4148... . 4822 130 30621 2256 47nF 5% 250V... . 4822 121 43526 6645 DIODE, 1N4148... . 4822 130 30621 2259 4700uF...
  • Page 86 FR960PBK (continued) 2536 10uF 20% 63V... . 4822 124 40248 2643 1uF 20% 63V ... . 4822 124 21913 2537 10uF 20% 63V.
  • Page 87 FR960PBK (continued) 2881 100nF 5% 63V... . 5322 121 42386 3339 0,1W... . 4822 117 11139 2882 100nF 5% 63V... . 5322 121 42386 3340 0,1W.
  • Page 88 FR960PBK (continued) 3593 0,1W... . 4822 117 11449 3805 0,25W... . 4822 051 10102 3594 0,1W... . 4822 117 11449 3806 0,25W.
  • Page 89 FR960PBK (continued) 4255 0R0 JUMP. (0805) ..4822 051 20008 6263 DIODE, 1N4003G ... 4822 130 31878 4256 0R0 JUMP. (0805) ..4822 051 20008 6265 DIODE, 7805CP.
  • Page 90 KNOB MENU NAV (BL) ..4822 410 12441 BADGE PHILIPS... . 4822 459 10887 LEG SILVER ... . .
  • Page 91 FR970 - Manual no. 1931 FRONT BOARD ELECTRICAL PARTS LIST 2470 100pF 5% NP0 50V ..5322 122 32531 2471 100pF 5% NP0 50V ..5322 122 32531 FRONT BOARD ELECTRICAL PARTS LIST 2472...
  • Page 92 FR970 (continued) 3484 0,25W... . 4822 051 10102 7403 IC, GP1U28XP ... . 4822 130 10165 3485 0R0 JUMP. (0805) ..4822 051 20008 7404 IC, SAA6579T .
  • Page 93 FR970 (continued) 3128 2k2 1% 0,1W, for LW version..4822 117 11449 MISCELLANEOUS 3132 47R 5% 0,5W... . . 4822 116 52195 S 1051 MAINS OUTLET ... . 4822 267 31994 3134 220k 5% 0,1W .
  • Page 94 FR970 (continued) 2274 470nF 10% 16V... . 4822 126 14583 2555 100nF Y5V 50V P80M20..4822 126 13838 2275 1000uF 16V... . . 4822 124 81144 2556 100nF Y5V 50V P80M20 .
  • Page 95 FR970 (continued) 2668 47nF 5% 250V... . 4822 121 43526 2912 22uF 50V....4822 124 81151 2669 47nF 5% 250V.
  • Page 96 FR970 (continued) 3517 0,1W... . 4822 051 20393 S 3629 0,33W ... 4822 052 10109 3519 0,1W... . 4822 117 10965 3630 0,4W .
  • Page 97 FR970 (continued) 3877 0,25W... . 4822 051 10102 4524 0R0 JUMP. (0805) ..4822 051 20008 3878 0,25W... . 4822 051 10102 4526 0R0 JUMP.
  • Page 98 FR970 (continued) 6644 DIODE, 1N4148... . 4822 130 30621 2256 47nF 5% 250V... . 4822 121 43526 6645 DIODE, 1N4148... . 4822 130 30621 2259 4700uF...
  • Page 99 FR970 (continued) 2536 10uF 20% 63V... . 4822 124 40248 2643 1uF 20% 63V ... . 4822 124 21913 2537 10uF 20% 63V.
  • Page 100 FR970 (continued) 2881 100nF 5% 63V... . 5322 121 42386 3339 0,1W... . 4822 117 11139 2882 100nF 5% 63V... . 5322 121 42386 3340 0,1W.
  • Page 101 FR970 (continued) 3593 0,1W... . 4822 117 11449 3805 0,25W... . 4822 051 10102 3594 0,1W... . 4822 117 11449 3806 0,25W.
  • Page 102 FR970 (continued) 4255 0R0 JUMP. (0805) ..4822 051 20008 6263 DIODE, 1N4003G ... 4822 130 31878 4256 0R0 JUMP. (0805) ..4822 051 20008 6265 DIODE, 7805CP.
  • Page 103 KNOB MENU NAV (BL) ..4822 410 12441 BADGE PHILIPS... . 4822 459 10887 LEG SILVER ... . .
  • Page 104 MX975D - Manual no. 1931 FRONT BOARD ELECTRICAL PARTS LIST 2470 100pF 5% NP0 50V ..5322 122 32531 2471 100pF 5% NP0 50V ..5322 122 32531 FRONT BOARD ELECTRICAL PARTS LIST 2472...
  • Page 105 MX975D (continued) 3484 0,25W... . 4822 051 10102 7403 IC, GP1U28XP ... . 4822 130 10165 3485 0R0 JUMP. (0805) ..4822 051 20008 7404 IC, SAA6579T .
  • Page 106 MX975D (continued) 3128 2k2 1% 0,1W, for LW version..4822 117 11449 MISCELLANEOUS 3132 47R 5% 0,5W... . . 4822 116 52195 S 1051 MAINS OUTLET ... . 4822 267 31994 3134 220k 5% 0,1W .
  • Page 107 MX975D (continued) 2274 470nF 10% 16V... . 4822 126 14583 2555 100nF Y5V 50V P80M20..4822 126 13838 2275 1000uF 16V... . . 4822 124 81144 2556 100nF Y5V 50V P80M20 .
  • Page 108 MX975D (continued) 2668 47nF 5% 250V... . 4822 121 43526 2912 22uF 50V....4822 124 81151 2669 47nF 5% 250V.
  • Page 109 MX975D (continued) 3517 0,1W... . 4822 051 20393 S 3629 0,33W ... 4822 052 10109 3519 0,1W... . 4822 117 10965 3630 0,4W .
  • Page 110 MX975D (continued) 3877 0,25W... . 4822 051 10102 4524 0R0 JUMP. (0805) ..4822 051 20008 3878 0,25W... . 4822 051 10102 4526 0R0 JUMP.
  • Page 111 MX975D (continued) 6644 DIODE, 1N4148... . 4822 130 30621 2256 47nF 5% 250V... . 4822 121 43526 6645 DIODE, 1N4148... . 4822 130 30621 2259 4700uF...
  • Page 112 MX975D (continued) 2536 10uF 20% 63V... . 4822 124 40248 2643 1uF 20% 63V ... . 4822 124 21913 2537 10uF 20% 63V.
  • Page 113 MX975D (continued) 2881 100nF 5% 63V... . 5322 121 42386 3339 0,1W... . 4822 117 11139 2882 100nF 5% 63V... . 5322 121 42386 3340 0,1W.
  • Page 114 MX975D (continued) 3593 0,1W... . 4822 117 11449 3805 0,25W... . 4822 051 10102 3594 0,1W... . 4822 117 11449 3806 0,25W.
  • Page 115 MX975D (continued) 4255 0R0 JUMP. (0805) ..4822 051 20008 6263 DIODE, 1N4003G ... 4822 130 31878 4256 0R0 JUMP. (0805) ..4822 051 20008 6265 DIODE, 7805CP.
  • Page 116 KNOB MENU NAV (BL) ..4822 410 12441 BADGE PHILIPS... . 4822 459 10887 LEG SILVER ... . .

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