JVC AV-21MT16/Z Service Manual page 27

Measuring
Item
instrument
SUB COLOUR 2 Signal
adjustment generator
Oscilloscope
Remote
control unit
W W Y W Y W W Y W
SUB TINT 1 Signal
adjustment generator
Remote
control unit
Test point Adjustment part
TP-47B [2. V/C]
TP-E 6. COLOUR
[CRT SOCKET
PWB]
(A) (A) (A)
( ) ( ) ( )
0V 0V 0V
C G C G C G M R B M R B M R B
(+) (+) (+)
[2. V/C]
7. TINT
Description
[Method of adjustment using measuring instrument]
Notes:
• Proceed to the following adjustment after having
completed the SUB CONTRAST adjustment.
• Set PICTURE MODE (VSM) to "BRIGHT".
- PAL M COLOUR -
(1) Receive a PAL M colour bar signal (full field colour
bar 75% white).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 6. COLOUR.
(4) Set the initial setting value of PAL M COLOUR.
(5) Connect the oscilloscope to TP-47B and TP-E.
(6) Adjust PAL COLOUR to set the value (A) in the
figure to +24V [AV-29MT16/Z, AV-29MT36/Z], +34V
[AV-25MT16/Z] or +30V [AV-21MT16/Z, AV-
21MT36/Z].
- PAL N COLOUR -
(1) Receive a PAL N colour bar signal (full field color
bar 75% white).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 6. COLOUR.
(4) Set the initial setting value of PAL N COLOUR.
(5) Connect the oscilloscope to TP-47B and TP-E.
(6) Adjust PAL COLOUR to set the value (A) in the figure
to +25V [AV-29MT16/Z, AV-29MT36/Z], +15V
[AV-25MT16/Z] or +17V [AV-21MT16/Z, AV-
21MT36/Z].
- NTSC 3.58 COLOUR -
(1) Receive a NTSC 3.58 colour bar signal (full field
colour bar 75% white).
(2) Press the [COLOUR SYSTEM] key to select the
NTSC 3.58 colour system.
(3) Set the initial setting value of NTSC 3.58 COLOUR.
(4) Adjust NTSC 3.58 COLOUR to set the value (A) in
the figure to +35V [AV-29MT16/Z, AV-29MT36/
Z], +25V [AV-25MT16/Z] or +26V [AV-21MT16/Z,
AV-21MT36/Z].
[Method of adjustment without measuring instrument]
Notes:
• Proceed to the following adjustment after having
completed the SUB CONTRAST adjustment.
• 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] key to select the
NTSC 3.58 colour system.
(3) Select 2. V/C from the SERVICE MENU.
(4) Select 7. TINT.
(5) Set the initial setting value of NTSC 3.58.
(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.
(No.YA405)1-27