JVC AV-20N8(BK) Service Manual page 15

Measuring
Item
instrument
Adjustment Remote
of DELAY control unit
POINT
Setting
(Adjustment)
item
DELAY POINT
(AGC TAKE-OVER)
V/C (VIDEO/CHROMA) CIRCUIT ADJUSTMENT
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. V/C (1. CUT OFF (R / G / B) ~ 9. TEXT (RGB) CONT. and 15. AMP T. SHARP)]
Colour system
Setting item
1. CUT OFF (R / G / B)
2. DRIVE (R / B)
3. BRIGHT
4. CONT.
5. COLOUR
6. TINT TV / VIDEO
7. BLACK OFFSET (R-Y / B-Y)
8. SHARP TV / VIDEO
9. TEXT (RGB) CONT.
15. AMP T. SHARP
: Do not adjust.
Test point Adjustment part
DELAY POINT
(AGC TAKE-OVER)
Variable Initial setting
range value
0 ~ 63 20
Variable
range PAL
−128 ~ +127
−128 ~ +127
−64 ~ +63
−58 ~ +28
−60 ~ +67
−64 ~ +63
−8 ~ +7
−32 ~ +31
−128 ~ +127
−128 ~ +127
1. Receive a black and white signal (colour off).
2. Select 1. IF from the SERVICE MENU.
3. Select 2. DELAY POINT by pressing the 2 key on the remote
control.
4. Adjust the MENU − or + key until video noise disappears.
5. Press the DISPLAY key three times to return to the normal
screen.
6. Turn to other channels and make sure that there are no irregu-
larities.
Initial setting value
SECAM
b
0
b
0
−11
b
−10
b
+7 +11
0 / 0
+5 / +3
b
b
+15
−15
b
No. 56030
AV-20N8
Description
NTSC 3.58 NTSC 4.43
b b
b b
b b
b b
+12 −2
+5 / 0 −2 / 0
b b
b b
b b
15