Sharp 14A1-RU, Service Manual

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20
14A1-RU
14A2-RU
20-2
20-1
TROUBLE SHOOTING TABLE
(Continued)
NO SPECIFIC COLOUR
Is some colour produced in B/W broadcast reception ?
Is the white balance properly adjusted ?
Readjust the white balance.
The picture colour is yellow.
The picture colour is magenta.
The picture colour is cyan.
Check Q871, Q883 and their adjacent circuits.
Check Q870, Q885 and their adjacent circuits.
Check Q872, Q887 and their adjacent circuits.
Check IC801 and bias control circuit.
NO SPECIFIC COLOUR
“PAL”/“SECAM”
(NO COLOUR SYNCHRONIZATION)
Check IC801, R801, R802, R803, D804, D805, D806 and Q801.
Check X1001.(12MHz)
TROUBLE SHOOTING TABLE
(Continued)
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED:
»
Sync. Separator Circuit.
NO VERTICAL SCAN
Vertical linearity and size is abnormal.
Check pins(16), (17) and (34) of IC801.
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
Readjust vertical size. (Bas Data)
Check IC501.
Check C503 and C507.
Check IC501.
Check R504, R503, R506, R513, C517 and D501.