Hitachi 61HDX98B Service Manual page 76

DP-8 5 CHASSIS TROUBLESHOOTING
1.) No Raster and No Power (GREEN LED's going OFF)
(Power)
Find which LED is going Dark and OFF
4
One LED Going OFF a little
(Other LED's are going OFF a little later)
before the others.
(Power)
D924 is Dark
II .I-\
I I 1 I
(LIutlJ 1 1 alsconnecr
Bright
Check DM-1
(Power)
D943 is Dark
(+5VS) disconnect
(Power)
Check +5VS line
1909, D942, etc.
Check DM-1
(Power)
0928 is Dark
(-5VS)
PMQ1
+ PMQ2, PhQ3
disconnect
Check DM-1
(Power)
D947 is Dark
(D+3.3VS)
Check Standby
D+3.3VS line
1911, D946, etc
Check DM-1
,
I
(Power) (Power)
D971 (TV5V)
D930 (TVSV)
Check D970, Check D929,
1914, Q914, etc. 1908, Q914, etc.
I I
I
* w
(Power) (Power)
D920
D919
(Audio R+ZtV) (Audio F+28V)
Check +21V line
Check +28V line
E995, D912, E994, D911,
1402, etc. 1401, 1403, etc.
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