Lack Of Stable Horizontal Synchronization - Tatung OMNISCAN SERIES Service Manual

6.26 LACK OF STABLE HORIZONTAL SYNCHRONIZATION
HORIZONTAL
CHECK INPUT FREOUENCY-
I
- - - - - - - - - - >
28KHz TO
65KH~
I
I
CHECK SIGNAL SYNC. TYPE
----------------->
G+SYNC., H+V, HjV
I
I
I
CHECK SYNC. SW.
SOOl
I
I
I
I
>
G+SYNC.
H+V
HjV
CONNECTOR
(SW. OFF)
(SW. ON)
(SW. on)
P003 (PWB-1697)
CHECK SYNC. AMP
----------------------->
0407, R436, R429
I .
R426, R427, C403
I
CONNECTOR P401 (PWB-1701)
I
CHECK SYNC.
SEPARATOR
I
I
I
G+SYNC.
r-------------------------
>
0052, 0053, 0556, 0551
(PWB-1697-2)
I
I
I
H+V
~--------------------------------->
0562a, 0555, 0505, 0562b
I
(PWB-1697)
I
I
I
I
I
I
I
HjV
--------------->
0553, 0552
(PWB-1697)
READJUST HOR. OSC - - - - . - -
>
R422, R414, R420
(PWB-1701)
I
I
I
CHECK HOR. OSC - - -
I
I
I
CHECK H. F jV CIRCUIT
I
I
I
END
SEE ALIGNMENT
----.----------->
0403 (PWB-1701)
=
6-24 =