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IC905 Troubleshooting
FUNC CLOCK DATA 19,20PIN CHECK
YES
21 PIN VOLT CHECK
YES
EACH FUNC MODE (INPUT SIGNAL CHECK)
YES
EACH FUNC MODE (INPUT SIGNAL CHECK)
YES
17,22 Pin OUTPUT SIGNAL CHECK
FM(TUN600)CHECK
TUN600 2PIN 9V CHECK
YES
TUN600 7,8,9PIN CLOCK DATA CHECK
YES
TUN600 3,5PIN OUTPUT CHECK
YES
OK
NO
VOLTAGE CHECK LIST
NO
FUNC Troubleshooting
NO
SPK Relay SECTION CHECK
NO
VOLTAGE CHECK LIST
NO
IC301 7,8,9 PIN CLOCK DATA CHECK
IC301 Troubleshooting
NO
TUN600 CHANGE
- 2-19 -
YES
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