Sharp VC-90ET

VC-90ET
b) Adjust R5813 (record chroma control) so @ Test points Layout
that the red level should be 20mVp-p as
shown in Figure 2-18.
Note:
Reco".
=
R5813
is
located
in
the
system
control,
servo
”
GAT)
ADJ
baa
6
aseis
|
[Retno.5723)
PWB.
|
1§
TPS7O2
1
CYAN
oa
00
at
FLS702
:
O
Mo
ts7o
oO
of
O
ORs
yarn
FLS707
10
[ser]
o__[xso2]
1
eed |
Figure 2-20. SUB CHROMA PWB
Figure 2-18.
Adjustment of playback equalizer
Measuring Oscilloscope
Mode selection Playback mode
Input signal Alignment tape
(VROCSSV)
Measuring point | TP5702
Adjusting
control
|
T5701
(playback
equalizer)
Specified
value
|
1. Set the unit in the playback mode, and
playback an alignment tape.
2. Observe the output of TP5702 with an
osilloscope, and using T5701 make the
oscillating width match with the flat portion of
the red and blue test pattern.
TP5702
<
m
&
ia
O°
=
Adjust the level.
Figure 2-19.