Philips CEM-3000 Service Manual

Car audio system

CEM3000/00/51/98

CEM3000X/78

CONTENTS

Technical specification ..................................................................1-2

Version variation ...........................................................................1-2

Service measurement setup..........................................................1-3

Service aids .................................................................................1-4

Instructions on CD playability ................................................2-1..2-2

Block diagram................................................................................3-1

Wiring diagram...............................................................................4-1

Disassembly diagram............ ........................................................5-1

Main board Circuit diagram Layout diagram

Servo board Circuit diagram

Layout diagram .........................................................................7-2

Exploded view diagram .................................................................8-1

.........................................................................6-1

..................................................................6-2..6-3

.........................................................................7-1

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 LX 1046 Service Audio Subject to modification

Version 1.2

3141 785 35332

Display

• Type: High contrast LCD, 32K color illuminations (11 characters)

• Key illumination: White

Audio Playback

• Playback Media: CD, CD-R, CD-RW, MP3-CD, WMA, WMA-CD

• Compression format: MP3, WMA

• Disc Playback Modes: Fas

t Forward/Backward, Introscan, Next/Previous Album Search, Next/ Previous Track Search

• MP3 bit rates: 32-320kbps and variable bit rate

• ID3 Tag support: Song title, artist, a bum

• USB Direct Modes: Fast Backward/Fast Forward, Play/Pause, Previou

s/Next, Repeat, Shuffle

Tuner/Reception/Transmission

• Tuner Bands: AM, FM Stereo

• Auto digital tuning

• No. of preset stations: 18(FM), 12(AM)

• Tuner Enhancements: Auto search and store

• RDS: Station Name, Station

Information, Radio Text, Program Type, News, News & Traffic, RDS Clock Set

Sound

• Output power (MAX): 50Wx4 channels

• Output power (RMS): 24Wx4 channels (4 ohms, 10% T.H.D.)

• Equalizer: 3-bands

• Equalizer settings: Classic,

Jazz, Pop, Rock, Flat,

Optimal, Techno, User defined

• Sound Enhancement: Dynamic Bass Boost, MAX Sound

Connectivity

• USB: USB 2.0 Host

• MP3-Link: For portable MP3 music playback

• Sub-woofer preamp output: With gain control

• Preamp output: 2 pairs RCA(L/R)

Security/Anti-thief

• Front panel: Detachable

• Display blackout: 10/20 sec selectable

Accessories

• Remote control: Slim remote with battery

• Quick start guide: English, Traditional Chinese, Brazillian, Portuguese, Spanish

• User Manual: Brazilian Portuguese, Spanish

Power

• Power supply: 12V DC

Dimensions

• Product dimensions (W x H x D): 188 x 58 x 190 mm

• Chassis: 1 Din

TECHNICAL SPECIFICATION

1 - 2

VERSION VARIATION

Type /Versions:

Board in used:

SERVO BOARD MAIN BOARD

Features

RDS VOLTAGE SELECTOR ECO STANDBY - DARK

* TIPS : C -- Component Lever Repair.

M -- Module Lever Repair

-- Used

Service policy

Type /Versions:

Feature diffrence

/05 /00

C/M C/M

/05 /12

CEM3000

/51

M M

CEM3000

/51

/16/85/

C/M C/M

/16/85/

MEASUREMENT SETUP

Tuner FM

1-3

Bandpass

LF Voltmeter

e.g. PM2534

RF Generator

e.g. PM5326

DUT

250Hz 15kHz

e.g. 7122 707 48001

R =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

R =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 250Hz) to eliminate hum (50Hz, 100Hz).

Use Audio Signal Disc (replaces test disc 3)

DUT

SBC429 4822 397 30184

S/N and distortion meter

e.g. Sound Technology ST1700B

LEVEL METER

e.g. Sennheiser UPM550

Recorder

Use Universal Test Cassette CrO2 SBC419 4822 397 30069

or Universal Test Cassette

LF Generator

e.g. PM5110

Fe SBC420 4822 397 30071

DUT

S/N and distortion met

e.g. Sound Technology ST170

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

SERVICE AIDS

1-4

All ICs and many other 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 potential.

WARNING

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

ESD

CLASS 1

LASER PRODUCT

Lead free

INSTRUCTIONS ON CD PLAYABILITY

Customer complaint

"CD related problem"

Set remains closed!

check playability

2 - 1

playability

ok ?

Play a CD

for at least 10 minutes

check playability

playability

ok ?

"fast" lens cleaning

check playability

playability

ok ?

For flap loaders (= access to CD drive possible) cleaning method

4 is recommended

add Info for customer

"SET OK"

return set

1 - 4 For description - see following pages

Exchange CDM

+ 10 hidden pages