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1. No raster and no power (How to check Diagnosis LED)
No raster
Is Red LED "BLINK"?
B
NO
PROTECTION
1. Turn OFF power SW.
2. Wait for 3 seconds.
3. Turn ON again after several seconds,
and carefully observe green LED's.
turn OFF same time?
Find which LED's going to dark or OFF.
(Other LED's are going to OFF little bit later or
same time.)
(DEF)
DP23 (+115V)
Check
FP05, DP15
Q777, QH01
FP04, DP12,
TH01, T701,
etc.
TROUBLE SHOOTING FLOWCHART
A
NO
DP06 (DEF.)
YES
Did green LED
YES
D
(DEFLECTION PWB)
(DEF)
(DEF)
DP35
DP11
+28V line
SW+9V line
Check
Check
FP03, DP11,
etc.
Is Power Indicator
Red LED "ON"?
DM03 (CONTROL)
YES
Is click sound of
relay heard?
S901
YES
Check
DIAGNOSIS
Red LED
(DEFLECTION)
NO
(POWER SUPPLY PWB)
(DEFLECTION PWB)
(DEF)
DP37
SW+5V line
Check
FP07, DP07,
IP05,
IP04,
etc.
etc.
64
64
NO
Is Voltage at (+) and (-)
of C936 5.1V?
YES
E
(POWER PWB)
Find which LED's going to dark or OFF.
(Other LED's are going to OFF little bit later or
same time.)
(POW)
D912
Audio
Check
D910, IA05,
etc.
C
NO
(POW)
D913
Audio (AC3)
Check
D911,
IJ01, IJ02,
etc.
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