No. 52076
21
AV-20N83
AV-21D83
VC (VIDEO/CHROMA) CIRCUIT ADJUSTMENTS
The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
•
Do not change the initial setting values of the setting (adjustment) items not listed in “ADJUSTMENT”.
[SUB MENU 2. VC]
: Do not adjust.
Setting (Adjustment)
Variable range
Initial setting value
item
PAL
SECAM
NTSC3.58
NTSC4.43 COMPONENT (V-2)
Item
Measuring
instrument
Test point
Adjustment part
Description
Adjustment
of WHITE
BALANCE
(Low light)
1. CUTOFF (R)
CUTOFF (G)
SCREEN VR
[In HVT]
Note:
• Set PICTURE MODE (VSM) to “BRIGHT”.
1. Receive a PAL black and white signal (colour off).
2. Select
2. VC
from the SERVICE MENU.
3. Select
1. CUTOFF (R)
and
(G)
with MENU
&
/
^
key, and set each
value to initial setting value with the
4
and
7
keys, or
5
and
8
keys on
the remote control unit.
4. Press the
1
key on the remote control unit to produce a single hori-
zontal line.
5. Turn the SCREEN VR fully counterclockwise, then slowly turn it clock-
wise to where a red, blue or green colour is faintly visible.
6. Use the keys
4
and
7
or
5
and
8
on the remote control unit and
adjust the other 2 colours to where the single horizontal line ap-
pears white.
7. Turn the SCREEN VR to where the single horizontal line glows faintly.
8. Press the
2
key to return to
1. CUTOFF
screen.
9. Press the DISPLAY key twice to return to the normal screen.
Setting (Adjustment)
Variable
Initial setting
Item
range
value
1. CUT OFF
R
–32 — +31
0
G
–32 — +31
0
PAL
1. CUTOFF
50 Hz
(R)
(G)
**
**
V/C
MENU
89
: SELECT
MENU - / + : OPERATE
DISPLAY : EXIT
Signal
generator
Remote
control unit
G. CUTOFF (
8
)
H.LINE OFF
H.LINE ON
1
2
3
4
7
8
9
5
6
R. CUTOFF (
8
)
R. CUTOFF (
9
)
G.CUTOFF (
9
)
REMOTE CONTROL UNIT
1
CUT-OFF (R/G)
-32 – +31
0/0
2
DRIVE (R/G/B)
-32 – +31
0/0/0
3
BRIGHT (TV/V-1/V-2/V-3)
-32 – +31
-18/-1/-1/-1
—/—/-2/—
4
CONT
-32 – +31
-20
—
5
COLOUR
-32 – +31
-5
-3
-12
-2
+10
TINT (TV/VIDEO) *1
—
—
-15/+2
+1/+1
—
6
TINT (TV/VIDEO) *2
-32 – +31
—
—
-15/-4
+1/+1
—
SHARP (TV/VIDEO) *3
-15/+5
—/0
7
SHARP (TV/VIDEO) *4
-32 – +31
-10/+5
—/0
8
Y DELAY (TV/VIDEO)
-8 – +7
-7/+1
+5/+1
0/+1
-7/0
—
9
AMP T. SHARP
-32 – +31
0
*1: AV-20N83
/BK
, AV-21D83
/VT
, AV-20N83
/VT
*2: AV-21D83
/BK
*3: AV-20N83
/BK
, AV-21D83
/BK
, AV-20N83
/VT
*4: AV-21D83
/VT
