Hitachi 61HDX98B Manual page 93

T R O U B L E S H O O TING (NO R A S T E R N O P O W E R
DP-85 CHASSIS TROUBLESHOOTING
1.) No Raster and No Power (How to check Diagnosis LED's)
No
Raster
B
No
(Deflection PWB)
Is Red LED
"Blinking"?
Protection
Yes
(Deflection PWB)
1. Trun OFF Power SW.
2. Turn ON again after several
minutes and carefull observe
ALL green LED's
(Deflection PWB)
Did 5 green LED's
turn OFF
same Time?
D
(Control PWB)
Is Power
Indicator Red LED
"on"? DM09
Yes
(Power PWB)
Is Click shound of
relay heard?
S901
Yes
(Deflection PWB)
Check Diagnosis
Red LED
No
Yes
F
DP-8 X S eries Chassis.
(Power PWB)
Check
DIAGNOSIS
No
Red LED
A
No
(Power PWB)
Is Red LED "OFF"?
Protection
No means ON but
NOT Blinking.
If Blinking, go to
"B"
(Deflection PWB)
1. Trun OFF Power SW.
2. Turn ON again after several
minutes and carefull observe
ALL green LED's
(Deflection PWB)
Did 5 green LED's
turn OFF
same Time?
No
Yes
G E
Yes
C
No
Didn't
Light at
ALL
R
P A G E 0 9 - 0 1