Sharp 20U250 Manuel d'entretien - Page 20

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Sharp 20U250 Manuel d'entretien
TROUBLE SHOOTING TABLE
20-1
(Continued)
Check IC801, R801, R802,
R803, D804, D805, D806
and Q801.
The picture colour is cyan.
Check Q871, Q883 and its
adjacent circuits.
TROUBLE SHOOTING TABLE
NO SPECIFIC COLOUR
NO
Is some colour produced in
B/W broadcast reception ?
The picture colour is magenta.
Check Q870, Q885 and its
adjacent circuits.
NO SPECIFIC COLOUR
"PAL/SECAM"
(NO COLOUR SYNCHRONIZATION)
Check IC801 and bias
control circuit.
Normal
Check X1001(12 MHz).
20-2
(Continued)
YES
YES
Is the white balance properly
adjusted ?
NO
Readjust the white balance.
The picture colour is yellow.
Check Q872, Q887 and its
adjacent circuits.