52
TROUBLE SHOOTING
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
1. No raster and no power (How to check Diagnosis LED)
No raster
Is Power Indicator
Red LED "ON"?
DM03 (CONTROL)
Check
DIAGNOSIS
Red LED
(POWER)
Is click sound of
relay heard?
Is Red LED "BLINK"?
PROTECTION
DP37 (DEF.)
Is Red LED "BLINK"?
PROTECTION
D903 (POW.)
Did green LED
turn OFF same time?
(DEF)
DP29(+120V)
Check
EP98, DP11,
Q777,QH01
TH01,DH11
etc.
(POW)
D912
Audio(F)
Check
E992, D910
IC01
etc.
(POW)
D913
Audio(Re)(C)
Check
E993,D911,
IS15, IS16
etc.
(POW)
D927
SBY +7V line
Check
D918, I905,
I008, I010
etc.
(POW)
D949
SBY+11V line
Check
D918, I906,
I007, I009
etc.
(POW)
D931,
SW+5V line
Check
D918, I907,
I011, I012
etc.
Did 5 green LED’s
turn OFF same time?
Check
DIAGNOSIS
Red LED
(DEFLECTION)
1. Turn OFF power SW.
2. Wait for 3 seconds.
3. Turn ON again after several seconds,
and carefully observe green LED’s.
1. Turn OFF power SW.
2. Wait for 3 seconds.
3. Turn ON again after several seconds,
and carefully observe green LED’s.
Find which LED’s going to dark or OFF.
(Other LED’s are going to OFF little bit later or
same time.)
A
D
E
C
B
NO
NO
(POWER PWB)
(POWER SUPPLY PWB)
Содержание 50NP4
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Страница 64: ...PRINTED CIRCUIT BOARD 61 2H Video Terminal P W B ...
Страница 65: ...PRINTED CIRCUIT BOARD DEFLECTION P W B 62 ...
Страница 66: ...PRINTED CIRCUIT BOARD SIGNAL P W B 63 ...
Страница 67: ...PRINTED CIRCUIT BOARD VM SENSOR 2 64 ...
Страница 68: ...PRINTED CIRCUIT BOARD POWER SUPPLY P W B 65 ...
Страница 69: ...PRINTED CIRCUIT BOARD SRS P W B 66 ...
Страница 70: ...67 WIRING DRESS DRAWING ...
Страница 71: ...68 50NP4 WIRING DRAWING ...
Страница 72: ...69 60NP4 WIRING DRAWING ...
Страница 73: ...70 50NP4 WIRING DRAWING ...
Страница 74: ...71 60NP4 WIRING DRAWING ...
Страница 75: ...72 BLOCK DIAGRAM ...
Страница 76: ...73 WIRING DRAWING ...
Страница 90: ...88 ...