Trouble Shooting Guide
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9
1
Front Section
2
3
4
5
6
7
8
9
Yes
no
1.Check CW703: 2pin,4pin,8pin,9pin,10pin,
11pin,12pin,13pin.
2.Check IC701: 5pin,7pin,71pin,81pin,94pin,
95pin,96pin,97pin.
no
Yes
1.Check IC701: 24pin,25pin,26pin.
2.Check IC701: 85pin,87pin.
Yes
no
1.Check HQ723,HQ724
2.Check LD703,LD704,LD705,LD706,LD713,
LD714,LD715,LD716,LD717,LD718,LD719,
LD720.
3.Check HQ711,HQ712,HQ713,HQ714,HQ715,
HQ716.
4. Check IC701: 73pin,74pin,75pin,76pin,77pin,
78pin.
no
1.Check CN701 of 7 pin: 4V.
2.Check IC701 of VCC 17 pin,72 pin,90 pin
voltage:3.3V.
3.Check -VPP voltage:-31.9(IC701 of 51pin).
4.Check between FIL1 and FIL2 AC
voltage:5.6V(FD701 of 1 pin and 33 pin).
5.Check XC701: 12MHZ.
Yes
no
1.Check CW702:16pin,17pin, 18pin,19pin,20pin.
2.Check CW702:13pin,14pin(only RDS).
3.Check IC704 VCC 14pin voltage: 3.3V.
4.Check IC704: 1pin,4pin,10pin,11pin.
5.Check IC701:3pin,64pin,66pin,85pin,86pin.
6.Check IC701: 27pin,65pin(only RDS
）
AC cord in
VFD display
Yes
CD initial
Function command
Tuner function
Function LED
Yes
Summary of Contents for EKE
Page 1: ...Service Manual Mini Component Sound System 9CD8308000 May 2009...
Page 18: ...Exploded View and Mechanical Parts List 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 9...
Page 27: ...1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 9 Title P C B Pattern Layout FRONT Section Top View...
Page 28: ...FRONT Section Bottom View 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 9 Title P C B Pattern Layout...
Page 30: ...Title P C B Pattern Layout MP3 CD Section Top View 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 9...
Page 31: ...Title P C B Pattern Layout MP3 CD Section Bottom View 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 9...
