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TROUBLESHOOTING
1. No Raster and No Power (REPAIR METHOD)
Red LED “ON”?
No
I
Yes
PROTECT line
Connector PYI ,
D964 (Al 2V)
Check
A12V line
1910, Q926,
1001,1102,
IYOl, IYO2,
HMO1 etc.
PROTECTION
No
Yes
How to check DIAGNOSIS LED’s.
1. Turn OFF power SW.
2. Turn ON again after several seconds, and carefully observe 9 green LED’s
No
turn OFF same time?
1
D940(+B)
Check
+B 120V line
Find which LED’s is going to dark or OFF
) E994, Q777,
(Other LED’s are going to OFF little bit later same time.)
T702, C701
etc.
v v
D939 (TV5V)
Check
TV5V line
1913, Q905
D938, L911
L114, D116
etc.
I
+
I
D946 (TVSV)
D966 (+27V)
Check
Check
TVSV line
+27V line
1912, Q905
E995, Q902
D928, L909
IK04, IK05
L922 etc.
etc.
I
+
D967 (-23V)
Check
-23V line
E996, 1909
IK04, IK05
etc.
D947 (32V)
Check
Audio32V
line
E992, E997
1401 etc.
D977 (22V)
Check
Audio22V
line
E993, E998
1402, IS11
etc.
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