Subject Is Greatly Out-Of-Focus When Zoomed - Hitachi VK-S274 Service Manual

Color & b/w video camera
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2
OK
TL1347-TL1350:PULSES
NG
NG
IC1302-2,10,29:5V
OK
NG
IC1302-12,20:9V
OK
NG
IC1302-28 (TL1312):
PULSE
OK
NG
IC1302-3:PULSE
OK
NG
IC1302-30:PULSE
OK
IC1302 faulty.
Lens block faulty.
Check the 5V line
Check the +B line
IC1201 faulty.
IC1201 faulty.
IC1201 faulty.

(5) SUBJECT IS GREATLY OUT-OF-FOCUS WHEN ZOOMED.

NG
Check the Zoom switch
unit.
OK
NO
IC1201-49:1.2-1.6V
YES
Note: For the item marked
Initialize the unit and
adjust autofocus
Does autofocus
NO
operate normally?
YES
END
Zoom switch faulty.
D1201,C1207,R1205
faulty.
, perform all
the adjustments required when the
unit is initialized, before
adjusting autofocus.
IC1201 faulty.

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