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BLOCK DIAGRAM
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TROUBLE SHOOTING GUIDE
NO PICTURE APPEAR (NO POWER)
NO
[..
Check power cord and switch ~f-----------
I
YES
C
F701 Fuse open
]
NO
-
-Failure C705, 0701-,
--l
0702, 0703, D704
I
Does 16.2V OC appear
betwee~
C705 and GND?
~f---------------I
I
YES
NO
~_~_~_:_~_~_~_o_~_g~~_~_p;_a_r_on
____
~~f--
_ _ _ . _ _ _ _ _ _
~~L_ ~~ffiQml,~ml
.~
Check signal input and turn
NO
I
~
"brightness control"
Signal cable loose
clockwise to maximum.
YES
NO
I
Failure IC202,0302,T3011
. Check horizontal driver
.....J
YES
NO
Check horizontal output
I
Failure
0303,T302,H-D~
YES
NO
Check video pre-amp and
Failure 0503,IC501
video processing circuit
YES
NO
Does VDC appear
Check video output
between collector of
0801 and GND ?
1
NO
YES
- - - ,
Failure D403,0801
I
J
Qheck G2(630V DC) voltage
NO
- j
Failure D402,D404
I
YES
l
Failure of CRT,CRT socket
~
18
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