Sony RDR-VX500 (RDRVX500), Руководство по обслуживанию

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7-1
RDR-VX500
7. TROUBLESHOOTING
Check power and front connector
Check the circuity around the clock
Check the circuity around
IC601 reset
Check the soldering around the
IC601
Change IC701
NO
NO
Check the circuity around the swith.
check the condition of commmunication
with Main Micom
(IC601 83~86, VFD STB, CLOCK
DATA-IN,DATA-OUT)
NO
YES
YES
NO
YES
NO
YES
YES
STOP,PLAY,OPEN
Key operatious are
normal?
YES
Key Operation or
Remote Control Error
Is the measurement of
power with in normal value?
End repairs
Key operatious such
as STOP,PLAY,OPEN
are normal?
Check the circuity
around IC601 reset?
Check the soldering
around IC601 good?
XT601 14.318MHz
oscillation is normal?
F1S01 is normal?
BD01~04, ZD1S01~2
SHORT and OPEN
are normal?
Check feedback IC1S01
Change short circuited or
opened parts
Change fuse
Check 2'st Voltage
Replace Q1S01
NO
NO
Is there voltage at
Collector of
Q1S01
NO
YES
YES
YES
Operation of
Q1S01 is
normal?
NO
YES
No Power Detected
(stand by LED OFF)