JVC AV-32230 Service Manual page 29

ADJUSTMENT OF CHROMA
Measuring
Item
instrument
SUB COLOR Signal
adjustment generator
Oscilloscope
Remote
control unit
Y
G
Cy
W
AV-32260
AV-32260
AV-32260
SUB TINT Signal
adjustment generator
Oscilloscope
Remote
control unit
Y
G
Cy
W
AV-32260
AV-32260
AV-32260
Test point Adjustment part
TP-B No.3 COLOR
TP-E ( )
[CRT SOCKET
PWB]
R
(A)
(–)
0V
(+)
B
Mg
A (Vw- )
B
, AV-32230 +8V
/G /G
, AV-32230 +6V
/H /H
, AV-32230 +7V
/M /M
Table 1
TP-B No.4 TINT
TP-E( )
[CRT SOCKET
PWB]
R
(–)
0V
(+)
Mg B
(B)
B (Vw- )
Mg
, AV-32230 +8V
/G /G
, AV-32230 +8V
/H /H
, AV-32230 +11V
/M /M
Table 2
Notes:
• Proceed to the following this adjustment after having completed the
adjustment of CONTRAST.
• Set VIDEO STATUS to "STANDARD".
[ Method of adjustment without measuring instrument ]
1. Receive a broadcast.
2. Select the No.3 COLOR of the PICTURE MODE.
3. Set the initial setting value of the No.3 COLOR with the LEFT/RIGHT
key of the remote control unit.
4. If the color is not the best with the Initial setting value, make fine
adjustment of the No.3 COLOR until you get the optimum color.
Notes:
• Proceed to the following this adjustment after having completed the
adjustment of CONTRAST.
• Set VIDEO STATUS to "STANDARD".
[ Method of adjustment using measuring instrument ]
1. Input the full field color bar signal (75% white).
2. Select the No.3 COLOR of the PICTURE MODE.
3. Set the initial setting value of the No.3. COLOR with the LEFT/RIGHT
key of the remote control unit.
4. Connect the oscilloscope between TP-B and TP-E.
5. Adjust COLOR and bring the value of (A) in the illustration to the
voltage shown in the table 1.
Notes:
• Proceed to the following this adjustment after having completed the
adjustment of CONTRAST.
• Set VIDEO STATUS to "STANDARD".
[ Method of adjustment without measuring instrument ]
1. Receive a broadcast.
2. Select the No.4 TINT of the PICTURE MODE.
3. Set the initial setting value of the No.4 TINT with the LEFT/RIGHT
key of the remote control unit.
4. If the tint is not the best with the initial setting value, make fine ad-
justment of the No.4 TINT until you get the optimum tint.
Notes:
• Proceed to the following this adjustment after having completed the
adjustment of CONTRAST.
• Set VIDEO STATUS to "STANDARD".
[ Method of adjustment using measuring instrument ]
1. Input the full field color bar signal (75% white).
2. Select the No.4 TINT of the PICTURE MODE.
3. Set the initial setting value of the No.4 TINT with the LEFT/RIGHT
key to the remote control unit.
4. Connect the oscilloscope between TP-B and TP-E.
5. Adjust TINT and bring the value of (B) in the illustration to the
voltvoltage shown in the table 2.
No. 51802
AV-32230
AV-32260
Description
29