Philips CE138 User manual

TROUBLE SHOOTING...................................................................12-13
SET EXPLODER VIEW DRAWING................................................11
PANEL PCB COMPONENT LAYOUT.........................................9-10
MAIN PCB COMPONENT LAYOUT............................................7-8
CIRCUIT DIAGRAM PANEL BOARD..........................................6
CIRCUIT DIAGRAM MAIN BOARD.............................................5
2012-5-30
CE138/all version
WIRING DIAGRAM......................................................................4
BLOCK DIAGRAM........................................................................3
DISMANTLING INSTRUCTIONS.................................................2 Service Manual
RECORDABLEREWRITABLE
Mini SystemServiceServiceVersion1.0TABLE OF CONTENTS

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main board
0(7+2'2)',6$66(0%/,1*&(ϔǃThe procedure of disassembling the unit
ѠǃThe procedure of disassembling the panel
1.˅ Remove A, B screws in the back cover as below picture showed; Use tweezer to prize up top cover as the blue arrow direction which showed as below picture and remove the
top cover A
B
5HPRYHWKHIRXUVFUHZVLQWKHKHDWVLQN5HPRYHWKH*VFUHZLQOHIWVLGHRIWKHXQLWC
D
E
F
G
5HPRYH$%VFUHZVLQWKHEDFNFRYHU8VHWZHH]HUWRSUL]HXSWRSFRYHU5HPRYHWKHWRSFRYHU5HPRYHWKHWZRVFUHZVZKLFKZHUHIRUIL[LQJWKHPDLQERDUGH
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3

Wiring Diagram
4

CIRCUIT DIAGRAM -MAIN BOARD
5

86%'186%83
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5.5.
5.5.
55.
796796
SW901
MENU
SW912
M1/PAU
R911180R
R921180R
SW902
T-DN
SW909
DISP
R912220R
R922220R
SW903
EQ/AUDIO
SW914
M3/RPT
R913330R
R923330R
SW904
MAX/SOUND/DBB
SW915
M4/RDM
R914470R
R924470R
SW905
T-UP
SW916
M5/ST
R915680R
R925680R
SW906
BAND
R9161
R9261
SW907
SOURCE
SW917
M6/PROG
5
1 5
SW908
RETURN
R9182 2 R9193 3
SW910
ZONE
SW913
M2/INT
51&51&5555555555555
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6666666666666
666666
666666666666666666666666666666666666666666666666666666666666666666666666666666666666666
&(&/.6'2*1'*1'
CIRCUIT DIAGRAM -PANEL BOARD
6

PCB LAYOUT-MAIN BOARD TOP SIDE VIEW
7

PCB LAYOUT-MAIN BOARD BOTTOM SIDE VIEW
8

PCB LAYOUT-PANEL BOARD TOP SIDE VIEW
9

PCB LAYOUT-PANEL BOARD BOTTOM SIDE VIEW
10

SET EXPLODER VIEW DRAWING
11

CE138 Date2012-5-28
NO.
3
NO
audio
output
45DGLRDEQRUPDOd. To check the oscillation frequence of crystal XL130 of the tuner IC,shuold be 32.768MHz
b. To check whether the strength of then input signal of the tuner is too weak.
c. To check the voltage of the 12 pinǃ13 pin of the U131 of the tuner IC, should be +3V3.
a. To check the antenna of the AM/FM tuner.
a. To check whether the volume knob is turn to the minimum position.
b. To check whether the unit is at MUTE mode, press SOURCE button and check whether it is effective of the input sound
source.
c. To check whether the connection of audio output wire of ISO connector is correct; wrong connection or short circuit to the
ground will caused the protection of the power amplifier( no voltage output).
e. To check the voltage of 22 PIN(MUTE) of power amplifier U501(7388 IC) , normally should be +4V0.
d . To check the circuit of power amplifier U501(7388 IC) and VOLUME U301(7313 IC).
a. To check whether the CN501(ISO) connector of the tail of the unit is connect well , Whether it is loose of the 15A fuse of the
ISO, or insert non in place. 7URXEOHVKRRWLQJ7URXEOHVKRRWLQJ7URXEOHVKRRWLQJ7URXEOHVKRRWLQJfailure
phenomena failure cause remark
Product Model $UHD$UHD$UHD$UHD$OODUHDNO Power
1
b. To check whether there is any contamination and bad contact on the 22Pin male/female connector on the panel and main
board.
e. To check the oscillation frequence of crystal CF202 shuold be 32.768KHz .
d. At the unit ACC ON, To check the 36 pin voltage of the U201(MCU) should be low level .
c. To check the U602 of voltage regulator IC,the output pin should be +3V3ǃthe input pin should be +11V0.
LCD
abnormal
2
a.To check whether there is any contamination and bad contact on the 22Pin male/female connector of the panel and main
board. If necessary, can exchange the panel to test whether the defective is occurred by the unit or panel.
c.To check the voltage of the L303 of the MAIN board,should be +5V0.
b.To Check the voltage of the 56 pin of the IC901(75823) ,should be +5V0.
12

NO.
5 USB defective
AUX defective6
b. To check the MP3-LINK input signal.
c. To check whether there is any contamination and bad contact on the 22Pin male/female connector of the panel and
main board. If necessary, can exchange the panel to test whether the defective is occurred by the unit or panel.
c. To check whether there is any wearing and scratch of the shrapnel and pin of the panel USB.
failure
phenomena failure cause remark
a. To check whether the USB/SD signal format is correspond to the request of the unit.
b. To check the voltage of the the uppermost pin of the USB connector, should be +5V0.
d.To check whether there is any contamination and bad contact on the 22Pin male/female connector of the panel and
main board. If necessary, can exchange the panel to test whether the defective is occurred by the unit or panel.
a. To check the SOURCE shoule be in MP3-LINK mode.
13