Atari SM124

VIDEO CHART
Check the connection
between
Monitor and
PC.
Faulty
•
Adjust
V -Hold
(VR601)
H
-Center
(VR701)
Sub
-Bright
(VR702)
To the
main
chart
No
Check
Video circuit
Check
Hor. circuit.
Check
Vert. ircuit.
Trouble in FBT.
Check #3 of
P301
1.6Vp-p?
Yes
Check #5 or #9 of IC302
SVP - Pi
. Yes
Trouble in
Signal
Cable.
Check 48 or #6
of IC302
Check
cathode of
CRT
PCB.
Trouble in
IC301 or
Q304.
d i
Trouble in
IC302 or
Q301
Check FBT
circuit.
Ye
Trouble in CRT.
Check
Q303
and Q302.
Trouble in
Q303
or
Q302.