Daewoo NC-8011 - Page 15

TroubleShootingGuide
SMPS&AMP Section
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(only NC-8015/8016DE Model)
AC cord in
no
Tuner/AUX/CD/USB Speaker
sound
no
Phones sound
no
Power ON/OFF ON
Yes
1.Check F901
2.Check PT901
3.Check CN902 of 6pin:5V
4.Check CN902 of 7pin:(main power on)
5.Check IC911 of 3pin:9V.
6.Check IC704 of 2pin:3.3V
7.Check IC701 of 22pin:3.3V
no
LCD Display and back
light
1.Check LC701
2.Check IC701
3.Check X701(32.768KHZ)
4.Check LD701 and LD702
1.Check J701
2.Check IC702(IL4560D)
3.Check CN700
Yes
Yes
1.Check PT902
2.Check IC800(TDA7498):
Voltage of 6pin and 13pin :30.5V(NC-8015DE)/
37.5V(NC-8016DE)
3.Check IC800(TDA7498):Voltage of 20pin and
21pin :3.3V
4.Check IC801(SA1117BH-3.3):Voltage of
2pin :3.3V
5.Check IC400(SC7314S):
Voltage of 1pin: normal DC(8.5V).
6.Check TUNER/AUX/CD input signal
7.Check output signal pin of IC800(TDA7498)
2/3pin, 8/9pin and 10/11pin,16/17pin.
8.Check output signal terminals(J800).
Yes