Daewoo NC-8913 - Front Section Troubleshooting

TroubleShootingGuide
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Front Section
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Change to tuner function
AC cord in
Yes
no
Power ON/OFF ON
Yes
Yes
no
ST. LED on
1.Check IC101(TA2111N) of 11pin.
2.Check IC701(CA6808F) of 43pin
no
1.Check F980，F981
2.Check PT903
3.Check RF982，RF983
4.Check CN902,CN701
5.Check IC900 of 3pin:9V ,
IC704 of 2pin:3.3V
6.IC701 of 22pin:3.3V
LCD Display and back
light
1.Check LC701
2.Check IC701
3.Check LD701 and LD702
4.Check X701(32.768KHZ)
Yes
Tuner LCD Display
no
1.Check IC102 of 2pin Voltage:3.3V
2.Check IC700(CS9255)
3.Check Q002(S9018) and
Q003(S9018).
4.Check IC701 (CA6808F) of 40pin and
41pin.
5.Check X702(32.768KHZ)
Yes
Yes
Function command
no
Yes
1.Check IC701 of 7pin /8pin /9pin/10pin
2.Check SW701/SW702/SW703/SW704/
SW705/SW706/SW707/SW708/SW709/
SW710/SW711/SW712.
.