Daewoo NC-8011, Руководство по обслуживанию

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Trouble Shooting Guide
POWER & AMP Section
1
3
3
4
5
6
7
8
9
1
3
3
4
5
6
7
8
9
(only NC-8011DE Model)
AC cord in
no
Tuner/AUX/CD/USB Speaker
sound
no
Phones sound
no
Power ON/OFF ON
Yes
1.Check F980，F981
2.Check PT903
3.Check RF982，RF983
4.Check CN902,CW902
5.Check CW401 of 4pin(main power on)
6.Check IC900 of 3pin:9V
7.Check Q902 collector:9V
8.Check IC704 of 2pin:3.3V
9.Check IC701 of 22pin:3.3V
no
LCD Display and back
light
1.Check LC701
2.Check IC701
3.Check X701(32.768KH
Z
)
4.Check LD701 and LD702
1.Check J701
2.Check IC702(IL4560D)
3.Check CN700
Yes
Yes
1.Check IC800(CD7269ACZ):
Voltage of 3pin, 6pin and 1pin :more than DC
(18,-18V).
2.Check IC400(SC7314S):
Voltage of 1pin: normal DC(8.5V).
3.Check TUNER/AUX/CD input signal
4.Check output signal pin of IC800/( pin2,pin4).
5.Check output signal terminals(J800).
Yes