Sony RDR-GX257 Servise Manual page 53

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9. NO DV (IEEE 1394) INPUT (VIDEO/AUDIO) SIGNAL
Check DV_Jack connection
DV-mode switching?
IC1601 power 3.3V
IC1601 pin37 : "High"
X1601 oscillated?
IC1601 pin15 : "High"
TE
L 13942296513
Is there a signal?
IC1601
pin1,27,28,29,30 :
Is there a signal?
IC1601 pin2,3 :
Is there a signal?
Check MPEG IC
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.
http://www.xiaoyu163.com
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
x
ao
u163
y
i
2 9
8
Change to DV-mode.
Using remote control
Check power 3.3V on I/O board
Check RESET circuit
Q Q
3
6 7
1 3
1 5
co
.
6-
RDR-GX257/GX380
9 4
2 8
Check DV cable
0 5
8
2 9
9 4
2 8
Replace IC1601
m
9 9
9 9

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