Sony RDR-VX555 Service Manual page 96

Key Operation or
Remote Control Error
Voltage on the Function Display Ass'y?
YES
XT601 14.318MHz
oscillation
YES
Check the circuit
around IC601 reset?
YES
Key operation such
as STOP,PLAY,OPEN
YES
Check RM701 (Remocon module)
and IC601 (Pin 5)
NO
Check power of front connector
(CN704 Pin 12)
NO
Check the circuit around the clock
NO
Check the circuit around
IC601 reset
Check the circuit around the swith.
check the condition of commmunication
NO
with Main Micom
(IC601 83~86, VFD STB, CLOCK
DATA-IN,DATA-OUT)
STOP,PLAY,OPEN
Key operation are
NO
normal?
YES
End
7-2
Change IC701