Defective Vertical Amp. And Vertical Linearity; No Specific Colour; No Colour - Sharp 21F-PA18 Service Manual

TROUBLE SHOOTING FLOWCHART (Continued)
Check IC801.
The picture colour is cyan.
Check Q855 and its adjacent
circuits.
DEFECTIVE VERTICAL AMP.
AND VERTICAL LINEARITY
Re-adjust vertical size.
(Bus Data)
Vertical linearity and size are
abnormal.
Check R503, R506, R513,
R520 and C515.

NO SPECIFIC COLOUR

Is some colour produced in
B/W broadcast reception ?
The picture colour is magenta.
Check Q854 and its adjacent
circuits.

NO COLOUR

"PAL"
(NO COLOUR SYNCHRONIZATION)
Check IC801 and bias
control circuit.
Check X801 (4.43MHz)
5 – 3
21F-PD250 / 21F-PT220 / 21F-PA18 / 21F-PA18(B)
Is the white balance properly
adjusted ?
Re-adjust the white balance.
The picture colour is yellow.
Check Q853 and its adjacent
circuits.