NEC Multisync Plus JC-1501VMA Service Manual page 42

C. Abnormal White Balance
Check R/G/B
output voltage
of IC701
NG
( Measure the output Vp-p by N6. N8 and N10)
on the INTERFACE PWB PWE-176. ,
Normally. the voltage is approx.1.0Vp-p.
OK.---------------------------------------.-----------------~
Check R/G/B video
output voltage
NG
OK
TR901-TR903
TR905-TR907
and ambient circuit
Failure
(
Measure the video signal
1
output Vp-p by R1. G1. B1
on the VIDEO PWB PWE-179
Normally. 40Vp-p except
at ABL working.
-41-
TTL
IC802
TR814-TR822
TR804"'TR806
and their
ambient circuit
Failure
• IC701 and ambient
circuit Failure
• TR701-TR715
0701-0706 and
ambient circuit
Failure
ANALOG
TR801-TR803
Failure (BNC INPUT)
TR804-TR806
Failure (O:Sub INPUT)