Philips MCM390 Schematic

Micro System

MCM390

All Versions

From week 621 onwards, the CD & MP3 sound solution was changed to C MusIC solution. New CD & MCU Board and Display Board and Main Board Assy are used to match with the new solution.

Please refer chapter 1 to 13 for sets produced before week 620 and chapter 14 to 18 for sets produced in or after week 621.

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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 SL 0644 Service Audio Printed in The Netherlands Subject to modification

Version 1.1

CLASS 1

LASER PRODUCT

HANDLING CHIP COMPONENTS

1 - 1

1 - 2

2 - 1

SERVICE MEASUREMENT

2 - 2

Tuner FW

RF Generator

e.g. PM5326

DUT

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

½

Ri=50

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)

RF Generator

e.g. PM5326

½

Ri=50

DUT

Frame aerial

e.g. 7122 707 89001

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

S/N and distortion meter

e.g. Sound Technology ST1700B

To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage. Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).

CD RECORDER

Use Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3)

DUT

L

R

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

Use Universal Test Cassette Fe SBC420 4822 397 30071

LF Generator

e.g. PM5110

DUT

½

Ri=50

L

R

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

CONNECTION AND CONTROLS

3 - 1

CONNECTION AND CONTROLS

3 - 2

For more information onoperation instruction please visit Philips

Audio internet site :

http://www.audio.philips.com

DISASSEMBLY DIADRAMS

STEP A : Remove Back Cabinet

- A1 : Remove 2 screws (SP3x10)

- A2 : Remove 7 screws (SP3x10)

- A3 : Remove 2 screws (K3x10)

- A4 : Remove 2 screws (K3x10)

xx4 - 1

A1

A3

A2

A4

STEP B : Remove Power Transformer and Mains board

- Remove 4 screws (SP3x12)

B

DISASSEMBLY DIADRAMS

STEP C : Remove AC Cord Cover

- Remove 3 screws (SP3x10)

C

xx

4 - 2

STEP D : Remove Main PCB from CD Tray

- Remove 3 screws (SP3x10)

STEP E : Remove CD Tray from Front Cabinet

- E1 : Remove 2 screws (SP3x10)

- E2 : Remove 2 screws (SP3x10)

D

E1

E2

DISASSEMBLY DIADRAMS

STEP F : Remove CD Tray Cover

- Remove 4 screws (SP3x10)

4 - 3

xx

F

STEP G : Remove LCD PCB from Front Cabinet

- G1 : Remove 2 screws (SP2.6x8)

- G2 : Remove 6 screws (SP2.6x10)

STEP H : Remove Tape Deck (M -> H)

- H : Remove 4 screws (SP3x10)

G1

G2

H

SERVICE TEST PROGRAM

5 - 1

DISPLAY TEST

PLAY button

N

pressed?

Y

Display shows all

segments and flags

for checking open circuits.

see figure 1

IS - LED is switched on.

N

PLAY button

pressed?

Y

BLANK

STOP button

N

pressed?

Y

CD SERVO TEST

NEXT button

N

pressed?

Display shows

N N

ALBUM UP

pressed?

FOCUS search

Display shows

Enter focus test

FOCUS found?

Display shows

disc motor turns

STOP button pressed in any step returns to begin of Service Testprogram.

Y

SLIDE MOTOR test

Y

N

Y

To enter Service

Testprogram hold

PLAY & DISPLAY buttons

depressed while

plugging mainscord in.

Display shows version number of the µP - software.

ALBUM DN

pressed?

Y

Display shows

Enter sledge test

NEXT button

pressed?

Y

Slide moves outwards as

long as

button

is held

depressed.

Door switch is ignored mCD door can be opened.

*

Tuner test the sound settings Volume up/down,

*

DSC, IS and DBB function as in normal mode, but flags will not be indicated on the display in all steps.

stands for Service mode,

is software version, eg. S 4.15

FORMAT EEPROM

DISPLAY

Display shows

button

pressed?

Y

KEY TEST

N

SOURCE

pressed?

Y

button

N

Press every buttons,

TAPE TEST

Display shows

REC button

pressed?

Y

N

Display shows

skip to

if it is fail,

skip to

EEPROM is cleared and

default values are stored.

N

PREV button

pressed?

Y

Slide moves

inwards as

long as

button

is held

depressed.

N

This test should be done at the end of the production process so that every set is customised before leaving factory.

(See table 1)

PLAY/DISPLAY button

pressed?

Y

This test should be done at the end of the production process so that every set is customised before leaving factory.

Solenoids of the deck

are activated for 2s and

deactivated for 3s.

N

PLAY/DISPLAY button

pressed?

Y

Switch all actions off

SOURCE TEST

PRESET UP

Display shows version

of tuner board as long as

PROGRAM

e.g.

Tuner is normal working except for the PROGRAM button.

switched off?

Exit Service Testprogram

pressed?

N

key will be

pressed.

POWER

Y

N

KEY TEST

N

PLAY button

pressed?

Y

Slide stops

moving

PLAY button

pressed?

Slide stops

moving

N

Y

TUNER VERSIONS

TUN EUR

REGION

&

SET VERSIONS

1)

To toggle frequency grid press BAND button for more than 5s in normal tuner mode (not in service testmode).

EUROPE

FM/MW

/22/25

TUN USA

USA

FM/MW

/37 /21/21M/30

table 2

TUN OSE

OVERSEAS

FM/MW

1) Grid switchable

100/10kHz - 50/9kHz

Display will show either or , and show or

when button released.

Button Display

Power

Clock set

Program

Band

Play

.

-







RECORD

SOURCE

IS

DSS

VOL DOWN

Table1

5 - 2

5 - 3

BLOCK DIAGRAM OF INTEGRATED CIRCUIT

IC 7400 TMP86CS25F

PINS DESCRIPTION OF IC 7400 TMP86CS25F

PIN FUNCTION

SET BLOCK DIAGRAM

6 - 16 - 1

SET WIRING DIAGRAM

6 - 2 6 - 2

CIRCUIT DIAGRAM - DISPLAY AND MCU BOARD

7 - 17 - 1