Troubleshooting
Key Operation or
Remote Control Error
Is the measurement ofNO
power with in normal value?Check power and front connector
YES
XT602 8MHzNO
Check the circuit around the clockoscillation is normal?
YES
Check the circuitCheck the circuit aroundNO
around IC601 reset?IC601 reset
YES
Check the solderingNOCheck the soldering around the
around IC601 good?IC601
YES
Check the circuit around the swith.
NOcheck the condition of commmunication
Key operatious such
as STOP,PLAY,OPEN with Main Micom
are normal?(IC601,52,66,11,42,44,RRQ,SRQ,SCLK,
DATA-IN,DATA-OUT)
YES
End repairsSTOP,PLAY,OPEN
Keyoperations are
normal?
YES
Change IC701
6-2 |