Daewoo EKE Service Manual page 17

Trouble Shooting Guide
1
POWER &AUDIO &AMP Section
2
AC cord in
3
Yes
4
VFD display(stand_by)
5
Yes
6
Power on
7
Yes
8
Tuner/CD/AUX /GAME
speaker sound
9
1.Check PT901
2.Check PT992(only PSM)
3.IC991 2pin and 4pin voltage:4V
4
.Check F902
5
.Check RF901,RF902
no
6.Check HQ905 emitter voltage:-31.9V
7.Check between FIL1 and FIL2
voltage: normal AC 5.6V
8. Check CW901 of 2/6/7/8 pin.
1.Check CW901 of 1 pin voltage:3.0V .
no
2.Check IC903 of 2 pin voltage:9V.
1.Check F903,F904
2.Check Tuner/CD/AUX /GAME input signal
3. Check IC601(BD3401) of 20 pin voltage:
no
5.1V and 22 pin voltage:5.0V
4.Check IC601(BD3401)32, 33 pin Output
Signal.
5.Check IC451(NJM4558) Vcc (4, 8 Pin)
6.Check IC AUDIO PROCESSOR:
IC801(S1A0071_401).
7. Check IC FET DRIVER:IC802(S1A0051X)
8
.Check J801.
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