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Hitachi VK-S274R Service Manual page 20

Color & b/w video camera
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Troubleshooting > Trouble Diagnosis
2
NG
NG
I C 1 3 0 2 - 1 0 , 1 5 : 7 . 2 V
OK
NG
T L 1 3 1 2 : P u l s e
OK
NG
I C 1 3 0 2 - 2 3 : P u l s e
OK
NG
I C 1 3 0 2 - 2 0 : P u l s e
OK
NG
I C 1 3 0 2 - 5 : P u l s e
OK
I C 1 3 0 2 f a u l t y .
(5) Subject is greatly out-of-focus when zoomed
NG
Check the Zoom
switch unit.
OK
NG
IC1201-49:
1.2-1.6V
OK
Note: For the item marked
Data Initialize and
adjust auto focus.
NG
Does autofocus
operate normally?
OK
END
C h e c k t h e 7 . 2 V ( V M )
l i n e .
I C 1 2 0 1 f a u l t y .
I C 1 2 0 1 f a u l t y .
I C 1 2 0 1 f a u l t y .
I C 1 2 0 1 f a u l t y .
The test lands and components of circuit no. 1000-1099 are
on the SP circuit board.
Zoom switch faulty.
The test lands and components of circuit no. 1100-1499 are
on the PC circuit board.
The test lands and components of circuit no. 1500 and higher
are on the CSR circuit board.
D1201,C1207,R1205
faulty.
, perform all
the adjustments required when the
unit is data initialized, before
adjusting auto focus.
IC1201 faulty.
4 - 6

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