JVC AV-21L91-BK Service Manual page 26

AV-21L91
AV-25L91
AV-29L91
Measuring
Item
instrument
Adjustment Remote
control unit
of
SUB TINT-I
Signal
Adjustment
of generator
SUB TINT-II
Oscilloscope
Remote
control unit
(B)
Cy
W
Y
AV-21L91-BK
AV-25L91-BK
AV-29L91-BK
Table 2
26
Test point Adjustment part
6. TINT
TP-47G 6. TINT
TP-E (H)
[CRT
SOCKET
PWB]
B
Mg
R
(–)
0V
G
(+)
B (V - )
W Cy
+6V
+3V
0V
No. 51898
Description
[Method of adjustment without measuring instrument]
Notes:
• Proceed to the following this adjustment after having completed the
adjustment of SUB CONT.
• Set PICTURE MODE (VSM) to "BRIGHT".
– NTSC 3.58 TINT –
1. Receive a NTSC 3.58 colour bar signal (full field colour bar 75%
white).
2. Press the COLOUR SYSTEM button on the remote control unit to
select the NTSC 3.58 colour system.
3. Select 2. VC from the SERVICE MENU.
4. Select 6. TINT with the MENU &/^ key.
5. Set the initial setting value of NTSC 3.58 with the MENU –/+ key.
6. If you cannot get the best tint with the initial setting value, make fine
adjustment until you get the best tint.
7. Press the DISPLAY key twice to return to the normal screen.
– NTSC 4.43 TINT –
When adjustment is done for NTSC 3.58 TINT, appropriate values are
automatically set for NTSC 4.43 TINT.
[Method of adjustment using measuring instrument]
Notes:
• Proceed to the following this adjustment after having completed the
adjustment of SUB CONT.
• Set PICTURE MODE (VSM) to "BRIGHT".
– NTSC 3.58 TINT –
1. Receive a NTSC 3.58 colour bar signal (full field colour bar 75%
white).
2. Press the COLOUR SYSTEM button on the remote control unit to
select the NTSC 3.58 colour system.
3. Select 2. VC from the SERVICE MENU.
4. Select 6. TINT with the MENU &/^ key.
5. Set the initial setting value of NTSC 3.58 with the MENU –/+ key.
6. Connect the oscilloscope between TP-47G and TP-E.
7. Adjust NTSC 3.58 TINT to set the value (B) in the figure to the voltage
shown in the Table 2.
8. Press the DISPLAY key twice to return to the normal screen.
– NTSC 4.43 TINT –
When adjustment is done for NTSC 3.58 TINT, appropriate values are
automatically set for NTSC 4.43 TINT.