JVC AV-20N3 Service Manual page 24

AV-20N3
AV-20NMG3
AV-20NMG3B
Measuring
Item
instrument
Ad justment Signal
gener ator
of SUB
COLOUR Ⅱ Ⅱ Ⅱ Ⅱ
Oscillo-
scope
Remote
control unit
W
Y
Cy
24
Test point Ad justment part
TP-47G/R 5. COLOUR
PAL COLOUR
TP-E (# # # # )
[CRT SOCKET
PWB]
B
R
Mg
(－)
0V
(A)
(＋)
G
SECAM COLOUR
NT SC 3.58 COLOUR
NT SC 4.43 COLOUR
[Method of adjustm ent using measur ing instrument]
1. Input a PAL full field colour bar signal (75% white).
2. Enter the SERVICE MENU.
3. Select 2. V/C from SERVICE MENU.
4. Select 5. COLOUR with the MENU ▼ / ▲ key.
5. Set the initial setting value of PAL COLOUR with the MENU
- / + key.
6. Connect the osc illosc ope between TP-47G and TP-E (#).
7. Adjust PAL COLOUR to bring the value of
to the voltage as shown given billow.
(Voltage differenc e between (W) and (G))
Model
AV-20N3
AV-20N3
/D
AV-20NMG3
AV-20NMG3B
AV-20NMG3
1. Input a SECAM full field colour bar signal (75% white).
2. Set the initial setting value of SECAM COLOUR with the MENU
- or + key.
3. Adjust SECAM COLOUR to bring the value of
illustration to the voltage as shown given billow.
(Voltage differenc e between (W) and (G))
Model
AV-20N3
AV-20N3
/D
AV-20NMG3
AV-20NMGB
AV-20NMG3
/-A
1. Input a NTSC 3.58 full field colour bar signal (75% white).
2. Set the initial s etting value of NTSC 3.58 COLOUR with the
MENU - / + key.
3. Adjust NTSC 3.58 COLOUR to bring the value of
illustration to the voltage as shown given billow.
(Voltage differenc e between (W) and (G))
Model
AV-20N3
AV-20N3
/D
AV-20NMG3
AV-20NMG3B
AV-20NMG3
/-A
When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the
respective values .
No. 52025
Description
(A)
in the illustration
Voltage(W-G)
+14V
+10V
/-A
Voltage(W-G)
+8V
+10V
Voltage(W-G)
+11V
+10V
(A)
in the
(A)
in the