JVC PD-42DX, Service Manual

Page: 44 / 48

PD-42DX
1-44 (No.52088)
PAL/SECAM/
NTSC
SUB-SCREEN
COLOUR Remote control
unit
Signal generator
[2. V/C]
16. TWN COL
(Sub-screen
colour)
- SUB-SCREEN PAL COLOUR -
(1) Receive a PAL colour bar signal (full field colour
bar).
(2) Select "2. V/C" from the SERVICE MENU.
(3) Adjust <16. TWN COL> (Sub-screen colour) to set
the red colour of the colour bar signal in the sub
screen to be the reddest. (See Fig.7)
If noise is not completely deleted, adjust <16. TWN
COL> so that the red colour has the minimum noise.
NOTE:
If you select an adjustment item <16.TWN COL>,
then the screen automatically turns to twin
pictures mode.
(4) Press the [OK] key to save the value.
(5) Press the [INFORMATION] key twice to the normal
screen.
- SUB-SCREEN SECAM COLOUR -
(6) Receive a SECAM colour bar signal (half colour
bar).
(7) Select "2. V/C" from the SERVICE MENU.
(8) Make similar adjustment of SECAM COLOUR in the
same way as for "SUB-SCREEN PAL COLOUR".
(See Fig.8)
- SUB-SCREEN NTSC COLOUR -
(9) Input a NTSC 3.58 composite colour bar signal (full
field colour bar 75% white).
(10) Select "2. V/C" from the SERVICE MENU.
(11) Make similar adjustment of NTSC COLOUR in the
same way as for "SUB-SCREEN PAL COLOUR".
(See Fig.7)
(12) Input NTSC 4.43 colour bar signal (full field colour
bar 75% white), and then check the red colour of the
colour bar signal and confirm that there is no noise
or the minimum noise.
Fig.7
Fig.8
Item
Measuring
instrument
Test point Adjustment part Description
W Y CY G MG R B W Y CY G MG R B
Set the red colour of the colour bar to be the deepest.
W Y CY G MG R B W Y CY G MG R B
Set the red colour of the colour bar to be the deepest.