17
17-1 17-2
CX51N3/N4
TROUBLE SHOOTING TABLE
(Continued)
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED:
» Sync. Separator Circuit.
NO VERTICAL SCAN
Vertical linearity and size
abnormal.
Check pins(16), (17) and
(34) of IC801.
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
Readjust vertical size.
(Bus Data)
Check IC501.Check C505 and C509.
Check IC501 bias.
Check R501, R521, R503,
R512, R533 and C533.
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 (Q870, Q885) and
its adjacent circuits.
Check (Q871, Q883) and
its adjacent circuits.
Check (Q872, Q887) and
its adjacent circuits.
Check IC801 and bias
control circuit.
NO SPECIFIC COLOUR
“PAL”
(NO COLOUR SYNCHRONIZATION)
Check IC801, R801, R802,
R803, D804, D805, D806
and Q801.
Check X1001(12MHz).
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