4-9
9. TUNER FUNCTION CHECK
Check TUNER
module(TU601) is working.
Check TUNER MODUEL
power(Check 2PIN 9V)
Check IC200(BU4052)
16PIN VDD,8PIN VSS power
Replace the related parts
Replace the related parts
Check IC801(MC4580) 4PIN
VSS,8PIN VDD power
Check IC200(BU4052)
1, 12PIN input waveform.
Check IC200(BU4052)
3,13PIN output waveform.
Check IC601(BU 4502)
2, 15PIN Check 25 PIN:5.6V
Check IC801(MC4580)
2,6PIN input waveform.
OK
YES
YES
YES
YES
YES
YES
NO
NO
NO
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