JVC HR-S5000U Service Manual page 43

Note : Un less otherwise noted, a l l test points and adjustments are located on the M A I N board.
No. Item Check Point
CO L COMB TP33
4
o
® o
(JD
® ® I§
0 1§0
0
0 0 0
0 0
0
@�
0®
5 Y COM B 1 TP34
and 2
6 PR OCESSOR TP39
input level
Adjustment Parts
• S-VHS mode
R246
• SP mode
(C COM B ADJ)
• E- E
• Color bars
R160
TP34
0
0
0
0 o o
®
0 0 0
R251 • N mode
• SP mode
R254
• E- E
(Y COM B ADJ)
• Color bars
R 1 60 • S-VHS mode
• SP mode
( P R OCESS
I N PUT • E-E
• Color bars
L EV E L)
&
Signal Mode
1 . Connect an osci l loscope to TP33 and apply
a color bar signa l to V I D EO I N .
2 . Adj ust R246 so t hat the signa l center-lines
overlap each other ( less than 50 mVp-p). in
the SP mode.
C ORRE C T
1 . Connect an oscil loscope to TP34 and suppty
a color bar signal to V I DEO I N .
2 . Adj ust R251 a nd R254 a lternately for mini­
mum chromatic level ( l ess than 50 mVp-p of
the magenta portion .
1 . Connect an oscil loscope to TP39 and apply
a color bars signa l to V I D EO I N .
2 . Adjust R 1 60 for 400 ± 20 mVp-p signa l
level, in the SP mode.
Description
IN C ORRE C T
Fig. 2-4-2
Fig. 2-4-3
400mVp-p±
20 mVp-p
Fig. 2-4-4
2-5