Sharp 15JF-25S Service Manual page 30

CIRCUIT TO BE CHECKED:
Sync. Separator Circuit.
Normal
Check C502 and C514.
Check IC801,R801,R802,
R803,D804,D805,D806
and Q801.
The picture colour is cyan.
Check Q870,Q885 and
their adjacent circuits.
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
Check pin33 and 34
of IC801.
DEFECTIVE VERTICEL AMP.
AND VERTICAL LINEARITY
Readjusted vertical size.
(Bass Data)
Vertical linearity and size
is abnormal.
Check R502,R505
NO VERTICAL SCAN
Check IC501 bias.
NO SPECIFIC COLOUR
NO
Is some colour produced in
B/W broadcast reception?
The picture colour is magenta.
Check Q871,Q883 and
their adjacent circuits.
35
Abnormal
Check IC501.
YES
YES
Is the white balance
properly adjusted?
NO
Readjusted the white
balance.
The picture colour is yellow.
Check Q872,Q887 and
their adjacent circuits.
15JF-25S