Philips CE120X/78CE120/55 User manual

CE120/55
©Copyright 2008 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 any means, electronic, mechanical, photocopying, or otherwise without
the prior permission of Philips.
Published by JZ-SL 0847 Service Audio Printed in The Netherlands Subject to modification
Car Entertainment System
Version 1.2
CLASS 1
LASER PRODUCT
©3141 785 33182
TABLE OF CONTENTS Page
PCBs Location......................................................................1-1
Specifications .......................................................................1-2
Measurement Setup.............................................................1-3
Service Aids, Safety Instruction, etc.....................................1-4
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
SD Board.................................................................................8
Key Board................................................................................9
Set Mechanical Exploded View & Parts List..........................10
CE120X/78
Revision List...........................................................................11

1-1
Location of PCBS
Service policy
SERVO BOARD
SD/USB BOARD
KEY BOARD
/55
/55
C
C
C
CE120
VERSION VARIATIONS:
Type/Versions
Type/Versions
Board in used:
CE120
MAIN BOARD
Feature diffrence
Features
* TIPS:C--Component Lever Repair.
M--Module Lever Repair
--Used
C
MAIN BOARD SERVO BOARD KB BOARD SD BOARD

SPECIFICATIONS
1-2
USB/SD card Player
System:
Frequency response:
Signal/noise ratio:
Total harmonic distortion:
Channel separation:
Disc digital audio system
20 Hz - 20KHz
>80 dB
Less than 0.20%(1KHz)
>60 dB
General
Power supply:
Maximum power output:
Suitable speaker impedance:
Pre-Amp output voltage:
12V DC(11V-16V)
Test voltage 14.4V, negative ground
45Wx4 channels
4-8 ohm
Fuse:
Dimensions(WxHxD)
Weight:
15A
178x50x155mm
1.64kg
2.0V
Components
Mounting collar
Tapping screws M5x6 mm 4
M4x6 mm 4
Mounting bolt (50 mm) 1
Wire connector
Trim plate 1
T-key 2
1
Rubber cushion 1
1
1
1
User manual
Case for removable control panel
Note: Specifications and design are subject to change
without notice for product improvements.
AM Radio
Frequency range:
Sensitivity(S/N=20dB):
530-170 KHz
30 dBμ
FM Stereo Radio
Frequency range:
Sensitivity:
Frequency response:
Stereo separation:
Image response ratio:
IF response ratio:
Signal/noise ratio
10 dBμ
30Hz-15KHz
30dB(1KHz)
50dB
70dB
55dB
87.5 - 107.9MHz

MEASUREMENT SETUP
Tuner FM
DUT
RF Generator
Bandpass
LF Voltmeter
e.g. PM5326
250Hz-1 5kHz
e.g. 7122 707 48001 e.g. PM2534
S/N and distortion meter
e.g. Sound Technology ST1700B
Ri=50Ω
Use a bandpass filter to eliminate hum(50Hz,100Hz) and disturbance from the pilottone(19kHz,38kHz).
Tuner AM (MW,LW)
DUT
RF Generator
Bandpass
LF Voltmeter
e.g. PM5326
250Hz-1 5kHz
e.g. 7122 707 48001 e.g. PM2534
S/N and distortion meter
e.g. Sound Technology ST1700B
Ri=50Ω
Frame aerial
e.g. 7122 707 89001
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 ).
'
1-3

1-4
SERVICE AIDS
GB
GB
WARNING
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.
ESD
CLASS 1
LASER PRODUCT
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 !.
Lead free

Disassembly Diagram
2-1 2-1
1、pull out the mounting collar from the
main set with two L-keys.
2、Press the release key and take out the panel 3、Take out the top cover with a forceps.
4、Take out the bottom cover with a forceps. 11 5、loosen and take out the five bolts
① with a screw-driver.
6、loosen and take out the three bolts
② with a screw-driver,
then pull out the two connection-pegs
③ carefully .
44
7、pull out the connection-peg ④ carefully
5566
77
22
33
8、loosen and take out the bolt ⑤ with
a screw-driver.
9、loosen and take out the bolt ⑥ with
a screw-driver.
10、loosen and take out the bolt ⑦ with
a screw-driver.
4

Disassembly Diagram
2-2 2-2
88
11、Seperate the panel housing with fingers first.
Then pull out the connection-peg ⑧.
99
12、Take out the knob from panel. 13、Take out the six bolts ⑨with a screwdriver.

3-1 3-1
Software version check & upgrade Upgrade software
Upgrade software Upgrade software
VS-104
Check Servo software version
Check MCU software version
VM-103
1. In USB/SD/Disc mode, press DISP + 6 simutaliously
for 2 sec, LCD display is as below:
1. In tuner mode, press DISP + 6 simutaliously for 2 sec,
LCD display is as below:
102 is the servo software version
103 is the MCU software version
1、Copy servo software "BOOT.ALI" and "nemo.bin" into USB memory,
plug the USB memory into USB socket.Device upgrade servo software
automatically,Don't power off or disconnect power during the upgrade,
LCD show:
SERVO UPGRADING,,,DON'T PWR OFF
Around 1 minute,servo software upgrade completed and device change
to radio mode automatically
2、Delete the servo software in the USB and copy the MCU software
"CE120MCU" (for CE120) into USB memory, plug the USB memory
into USB socket.Device upgrade MB software software automatically
Don't power off or disconnect power during the upgrade, LCD show:
Around 1 minute,MB software upgrade completed and device power
off automatically,disconnect the USB memory.
MCU UPG

3-2 3-2
Malfunction check chart
TDA7388 of AMP
Power components
NO
NO
NO
Power
NO
NO
NO
NO
NO
Check USB/SD output
Components
Check tuner circuit and
its conjoint part is
good or bad
Change the tuner
NO
NO
USB/SD
USB/SD
Check USB/SD control
USB/SD circuit
Check the related
components of USB/SD
signal channel,cable,
socket is good or bad
Check whether read
SD card,and its functions
Fix the wire

4-1 4-1
SET BLOCK DIAGRAM