E-6
TROUBLESHOOTING GUIDE
No
Yes
No
Yes
No
No
Yes
No
An only horizontal line appears
Investigate CRT, IC401 and a
peripheral circuit.
Whether does a video
signal appear for IC601
42th pin or not?
Investigate IC601.
OSD screen doesn't appear
The wave form of the
D1014 , D1015 and D1016
normal?
Investigate the circuit of IC601
from IC1006.
Is the voltage DC 25V for
IC401 6th pin or not?
Is the voltage DC 25V for
IC401 2nd pin or not?
The wave form of the 99th
pin, the 100th pin, the
101th pin, and also the
96th pin of IC1006
normal?
Investigate C429, D411 .
investigate Q1015 and Q1016