Sony RDR-VX511 Service Manual page 99

QQ
3 7 6 3 1 5 1 5 0
No Power Detected
(stand by LED OFF)
NO
F1S01 is normal?
YES
NO
BD01~04, ZD1S01~2 Change short circuited or
SHORT and OPEN
are normal?
YES
NO
T E
L 1 3 9 4 2 2 9 6 5 1 3
Is there voltage at
Collector of
Q1S01
YES
NO
Operation of
Q1S01 is
normal?
YES
Check feedback IC1S01
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Change fuse
opened parts
Check 2'st Voltage
Replace Q1S01
x a o
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8
Key Operation or
Remote Control Error
Is the measurement of
power with in normal value?
YES
NO
XT601 14.318MHz
oscillation is normal?
YES
Q Q
3 7 6 3 NO 1
Check the circuity
around IC601 reset?
YES
NO
Check the soldering
around IC601 good?
YES
NO
Key operatious such
as STOP,PLAY,OPEN
are normal?
YES
End repairs
u 1 6 3
.
2 4
9 9 8
NO
Check power and front connector
Check the circuity around the clock
5 1 5 0 8 9 2 4 9
Check the circuity around
IC601 reset
Check the soldering around the
IC601
Check the circuity around the swith.
check the condition of commmunication
with Main Micom
(IC601 83~86, VFD STB, CLOCK
DATA-IN,DATA-OUT)
m
STOP,PLAY,OPEN
Key operatious are
normal?
c o
YES
Change IC701
2
9 9
8 2 9 9