Philips fwm 37 service manual

Page 1

Mini System FWM37/21/22/25/37

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Sew/gee
Servuce

ervice Manua

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TABLE OF CONTENTS

Page COMPACT MPB-CD PLAYBACK

Location of pc boards & Version variations
Technical Specifications
Measurement setup ....... ..
Service Aids, Safety Instruction, etc. . 1-5 to 1-7
Preparations & Controls ................ 1-8 to 1-10
Maintenance & Troubleshooting ............................... 1-11
Disassembly Instructions & Service positions ..
Service Test Program & DEMO Mode ...............
Set Block diagram ..
Set Wiring diagram .
Front Board .............
E006 Tuner Board : Systems Non-Cenelec..
E006 Tuner Board : Systems Cenelec...
ETF7 Tape Board ..................................
3CDC-LC-MPSCD2002 Module
Power Module (30-70W Version) .. .
AF9 Board .................................................................... 12

DIGITAL AUDIO

.. 11

Set Mechanical Exploded view & parts list ................. 13
CLASS 1
© Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands LASER PRODUCT

All rights reserved. No pan of this publication may be reproduced, stored in a retrieval system or
transmitted, in any Iorm or by any means, electronic, mechanical, photocopying, or otherwise
without the prior permission of Philips.

Published by SL0512 Service Audio Printed in The Netherlands Subject to modification. 3141 785 30160

Version 1.0

($9 PHILIPS

Page 2

SERVICE TEST PROGRAM

1 To start service test program l

hold >1 5. AUX
depressed while
plugging in the mains oord

Display shows the
ROM version '

5 refers to Service Mode.

V refers to Version.

DEMO Mode

ACTION
To Switch off Hold the l button down for 5 seconds during the DEMO display,
the set will confirm with "DEMO OFF" and switch to Standby.
To Switch on Hold the l button down for 5 seconds during Standby, DEMO

will begin.

TLIN ER
Button pressed?

TLIN ER
Button pressed?

Service frequencies are
copied to the RAM (see Table1)

except:

Tuner works normally

PROGRAM button

Disconnect

STANDBY-ON
Button pressed?

Set is in Service PLAY Made.

In case of lailures. error
codes according to table 2
will be displayed.

The Service Play Mode is intended to

detect and identify the failures in the CD Mode.

In this mode the electronics will still function

even when an error is detected so that
repair activities can be carried out.

nnnn
l
9

@l

Fig. 2

Fig. 1
All LEDs are on except ECO POWER.

note 1 : note 2: Only DISC 2, 3, AUX, ALB, TITLE,

MUTE, FM, DBBlZ, TECHNO, JAZZ,

CONCERT 8t R.C. are on.

Error Description

Focus Error
Triggered when the focus could not be found within a certain time when starting up the CD
or when the focus is lost for a certain time during play.

Radial Error
Triggered when the radial servo is off-track for a certain time during play.

Sledge In Error
The sledge did not reach its inner position (inner-switch is still close) before approximately
6 Sec. have passed by. Inner-switch or sledge motor problem.

Sledge Out Error
The sledge did not come out of its inner position (inner-switch is still open) before approximately
250 mSec. have passed by. Inner-switch or sledge motor problem.

Jump-offlrack error

Triggered in normal play when the jump destination could not be found within a certain time.
When this error occurred, software will try to recover by initiating the jump command again.
If it is recoverable, the disc will continue to play.

Subcode Error
Triggered when a new subcode was missing for a certain time during play.

PLL Error
The Phase Lock Loop could not lock within a certain time.

Turntable Motor Error
Generated when the CD could not reached 75% of speed during startup within a certain time.
Discmotor problem.

Focus Search Error
The focus point has not been found within a cenain time.

Mains oord ? Em), oode
Y E1000
v
E1002
E1003
Europe East Eur. Extended-band East Eur. USA Oversea
PRESET "EUR" "EAS" "EAS" "USA" "OSE"
E1005
4 875MHz 65.81 MHZ 87.5MHZ 87.5MHZ 87.5MHz
A 108MHz 108MHz 108MHz 108MHz 108MHz
a 531kHz 74MHZ 531kHZ 53DkHZ 530/531kHZ E1006
A 1602kHZ 87.5MHZ 1602kHZ 1700kHZ 1700/1 SOZKHZ
E 558kHz 531 kHz 558kHz 560kHz 560/558kHz 51007
1494kHZ 1602kHZ 1494kHZ 1500kHZ 1500/1494kHZ
E1008
153kHz 558kHZ 87.5MHZ QSMHZ 98187.5MHZ'
279kHz 1494kHz 875MHz 87.5MHz 875MHz E1020
198kHz 98MHZ 875MHz 87.5MHZ 87.5MHZ
o
98MHz 70.01MHz 875MHz 87.5MHZ 87.5MHz "' '
at
875MHz 65-81 MHZ gaMHz 875MHz 87.5/98MHZ 51°71
11
E1079
Table 1
Note: Depending on the selected grid frequency (9 or 10kHz)
By holding the TUNER and DH buttons depressed while switching on the Mains supply, one
of the undermentioned features will be activated:
- the tuning grid frequency is toggled between 9kHz and 10kHz for the Oversea (/21)version.
- the extended FM1 (65.81 MHZ - 74MHZ) is toggled on and off for East Eur. (/34) version.

This happens when the carousel switch is defective and closed all the time, or when the
carousel is blocked when it is located exactly at a disc position.

This happens when the carousel switch is defective and does not closed electrically, or when
the carousel is blocked in between two disc positions. The time-out is approximately 5 Sec.

The drawer could not open or enter the inside position and is opening again. This happen when
the drawer is blocked and cannot go fully inside or when the drawer switch is defective and does
not close.

Table 2

..S_ .
[Mainvrrylie/nu) yy refers to Software version number of uProcessor.
(Counting up lrorn 01 to 99)
SERVICE DISPLAY
PLAVMODE TEST

Button pressed?

Display shows Fig. 1
and selected LEDs on
(see note 1)

Button pressed?

I
Display shows Fig.2
and selected LEDs on
(see note 2)

Button pressed?

Various

other Tests

TEST Activated with ACTION
EEPROM TEST Dbl A test pattern will be sent to the EEPROM.
"PASS" is displayed if the uProcessor read
back the test pattern correctly, otherwise
I to Exit "FAIL" will be displayed.
EEPROM FORMAT K4 Load default data. Display shows "NEW"
for 1 second.
Caution!
All presets from the customer will be Iostll
ROTARY Volume Knob Display shows value for 2 seconds.
ENCODER TEST or Values increases or decreases in steps of 1
J09 Shume km" until 0 (Min.) or 40 (Max.) is reached.
LEAVE SERVICE Disconnect
TESTPROGRAM mains cord