Philips CEM-220 Service Manual

Car Entertainment System

CEM220/51/55/98

CEM220X/78

TABLE OF CONTENTS

Page

PCBs Location ......................................................................1-1

Speciﬁ cations .......................................................................1-2

Measurement Setup .............................................................1-3

Service Aids, Safety Instruction, etc .....................................1-4

Instructures on CD Playability ....................................1-5 to 1-6

Disassembly Diagrams ...............................................2-1 to 2-2

Software Version Check & Upgrade .....................................3-1

Malfunction Check Chart ......................................................3-2

Set Block Diagram ................................................................4-1

Set Wiring Diagram ..............................................................5-1

Main Board ..............................................................................6

Servo Board.............................................................................7

FB/USB Board ......................................................................... 8

SD Board ................................................................................. 9

Key Board ..............................................................................10

Set Mechanical Exploded View & Parts List .......................... 11

Revision List .......................................................................... 12

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 JZ-SL 0948 Service Audio Printed in The Netherlands Subject to modification

Version 1.3

CLASS 1

LASER PRODUCT

3141 785 33213

FRONT

/98

KEY

/51

FRONT

KEY

CONNECTION (CB BOARD)

C C

C/M

C/M C/M

/98

C C

C/M

C C/M C/M

SPECIFICATIONS

1-2

General

Power supply:

Fuse: Suitable speake r im pe dance: Maximum power out pu t: Continuous powe r ou tp ut:

Pre-Amp output vo lt ag e:

Subwoofer outpu t vo lt age:

Aux-in level: Dimensions(W×H×D) :

Wight:

Radio

Frequency range

-FM Frequency range

-AM(MW) Usable sensitiv it y

-FM Usable sensitiv it y

-AM(MW)(S/N =2 0d B) Frequency respo ns e Stereo separati on Signal/noise ra ti o

12V DC(11V- 16 -) , negative ground

15V 4-8Ω 45W×4channels 22W×4channels(4Ω1 0% T. H.D )

2. 0V(USB p la y mo de; 1kHz,0dB ,10kΩ load)

2. 0V(USB p la y mo de; 61kHz, 0d B, 10kΩ load) ≥500mV 188×58×128MM

1. 0kg

87.5-108 .0MHz(Eur)

87.5-107 .9MHz(Ame)

522-1620kHz(E ur )

530-1710MHz(A me )

8uV

30uV

30Hz-15kHz

30db(1kHz) ＞55dB

Components

Car audio system Remote control Rubber cushion Disassembly too l Front panel Carrying case for f ro nt p anel Tri m pl ate

Screw User manual Quick start guide

Note: Specifications and design are subject to change without notice for product improvements.

MEASUREMENT SETUP

Tuner FM

1-3

Bandp as s

25 0Hz -1 5kH z

e.g . 7122 70 7 48001

LF Voltm et er

e.g . PM253 4

RF Gene ra tor

e.g . PM532 6

DUT

Ri=50Ω

S/N and d is torti on mete r

e.g . Sound Tec hnolo gy ST17 00B

Use a ban dp ass fil ter to el imina te h um(50 Hz,10 0Hz) an d di sturb ance fr om the pi lo ttone (19kH z, 38k Hz ).

Tuner AM (MW,LW)

RF Gene ra tor

e.g . PM532 6

Ri=50Ω

DUT

Frame a er ial

e.g . 7122 70 7 89001

Bandp as s

25 0Hz -1 5kH z

e.g . 7122 70 7 48001

LF Voltm et er

e.g . PM253 4

S/N and d is torti on mete r

e.g . Sound Tec hnolo gy ST17 00B

To avoid at mo spher ic inte rfere nc e all AM-m easur ement s ha ve to be ca rried o ut in a Far ad ay s c age. Use a ban dp ass fil ter ( or at l east a hi gh p ass fil ter wit h 250Hz ) to e limin ate hum ( 5 0Hz,1 00 Hz ).

Use Audi o Si gnal Di sc SBC4 29 4822 3 97 3 0184 (repl ac es test d isc 3)

DUT

Cassette

Use Uni ve rsal Test Cass et te Cr O2 S BC419 4 822 397 3 00 69

or Univ er sal Test Cas sette F e SB C42 0 48 22 397 30 071

LF Gene ra tor

e.g . PM5110

DUT

S/N and d is torti on mete r

e.g . Sound Tec hnolo gy ST17 00B

LEVEL METE R

e.g . Sennh eiser U PM550

wit h FF-fi lter

S/N and d is torti on mete r

e.g . Sound Tec hnolo gy ST17 00B

LEVEL METE R

e.g . Sennh eiser U PM550

wit h FF-fi lter

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 compla in t "CD relate d pr ob lem"

Set remains closed!

Check playabili ty

①

1-5

playability

ok?

Play a CD

for at le ast 10 mi nutes

check playability

playability

ok?

"fast" lens cleaning

check playability

playability

ok?

③

For flap loaders( =a cc ess to CD drive possi bl e) clesning method④i s re co mmended

ann lnf o fo r custo mer

"SET O K"

return set

①-④For description -s ee f ollowing pages

②

Exchange CDM

1-6

Disassembly Diagram

2-1 2-1

1. Remove the mounti ng sleeve with the remova l keys. Press key and r emove the front panel.

4. Remove the screw 3 as shown.

2. Remove the two screws on the back side of

3. Remove the upper co ver with a tool.

the unit with a screw driver.

5. Remove the bottom cover with a tool.

6. Remove the screws 4 with a screw driver.

7. Remove the screw 5 wi th a screw driver.

8. Remove the connec tors 6, and then remove

9. Remove the adhesi ve tapes 7.

the mechani sm core.

Disassembly Diagram

10. Remove the screw 8 . 11. Remove the scr ew 9 . 12. Remove the screw 1 0 .

2-2 2-2

13. Remove the conne ctors 11, and then remove the bracket with a tool.

14. Remove the screw s 12.

3-1 3-1

Software version check & upgrade Upgrade software

1、Check Servo software version

In USB/SD/D isc mode, press DISP + 6 simuta liously for 2 sec, LCD display i s as below:

VS-104

102 is the servo software version

2、Check MCU software version

In tuner mode, press DISP + 6 simutaliously for 2 sec, LCD display is as belo w:

VM-103

101 is the MCU software version

3、Check BT software version

In tuner mode, press DISP + 5 simutaliously for 2 sec, LCD display is as belo w:

1、 C opy se rvo software "BOOT.ALI" and "nemo.bin" into USB memory, plug th e USB mem ory int o USB socket.D evice u pgrade servo s oftwa re automatic ally, Don't power off or dis connect power during the upgra de, LCD show:

SERVO UPGRADI NG,,,DON'T PWR OFF

Around 1 minute, servo soft ware upgrade complete d and device change to radio mode automa tically

2、 Delete the servo software in the US B and copy the MCU software "CEM250MCU" (for C EM250) into USB memory, p lug the USB memory into USB so cket. D evice upgra de MB software software automatically Don't power off or disconnect power during the upgrade, LCD show:

MCU UPG

VBT-177

177 is the MCU software version

Around 1 minute, MB softwar e upgrade completed and d evice power off automatic ally, d isconnect the USB memory.

Malfunction check chart

3-2 3-2

CD no sound

Check power wirt,

speaker wire is

fasten or not

Powe

Fix the wire

TDA73 86 o f AMP

Chang e th e r

compo ne nts

Check C D ou tput

Check tuner circu it and is conjoin part

is good or bad

Components

Chang e th e tuner

Check C D co ntrol

circu it i s good or b ad

Check the related

components of CD si gn al

channel, ca bl e, socket is

good or bad

Change componen ts

of CD circuit

CD display

Check 5673 ALI

circuit and its

conjoint part

Check cd whether ra nd disc,and i ts f un ctions whether connect t o US B

+ 23 hidden pages