JVC AV-32S565 Series Service Manual page 37

4.8.5 VIDEO CIRCUIT
Measuring
Item
instrument
WHITE Signal
BALANCE generator
(LOW LIGHT)
Remote
control unit
REMOTE CONTROL UNIT
H.LINE ON
H.LINE OFF
G CUTOFF
G CUTOFF
WHITE Signal
BALANCE generator
(HIGH LIGHT)
Remote
control unit
REMOTE CONTROL UNIT
1-36 (No.YA093)
Test point Adjustment part
[1.PICTURE/SOUND]
S14: CUTOFR
S16: CUTOFG
S18: CUTOFB
[3.WHITE BALANCE]
SCREEN VR
[FBT]
R CUTOFF B CUTOFF
R CUTOFF B CUTOFF
[1.PICTURE/SOUND]
S10: DRIVE R
S12: DRIVE B
[3.WHITE BALANCE]
R DRIVE B DRIVE
R DRIVE B DRIVE
Description
(1) Input the black and white signal ( color off ).
(2) Set the VIDEO STATUS to STANDARD.
(3) Set the COLOR TEMPERATURE to LOW.
(4) Select 1.PICTURE/SOUND from the SERVICE
MODE.
(5) Set the initial setting values of the < S14 > (CUTOFF
R), < S16 > (CUTOFF G), < S18 > (CUTOFF B).
(6) Return to the main menu in SERVICE MODE.
(7) Select the 3.WHITE BALANCE from SERVICE
MODE.
(8) Display the horizontal line by pressing the [1] key.
(9) Turn the SCREEN VR all the way to the left, then
turn it gradually clockwise until either one of the red,
blue or green color is faintly visible.
(10) Adjust the two colors which did not appear until the
single horizontal line that is displayed becomes
white using the [7], [8], [9], [TUNE] and [RETURAN+]
keys.
(11) Press the [MUTING] key to memorize the set value.
(12) Press the [4] key to release the horizontal line mode.
(13) If there is a gap with the setting values, repeat the
steps 7. to 12. for readjustment.
(14) Input the 480i component video signal.
(15) Repeat the steps 7. to 13. as above.
(16) Input the 1080i component video signal.
(17) Repeat the steps 7. to 13. as above.
(1) Input the black and white signal (color off).
(2) Set the VIDEO STATUS to STANDARD.
(3) Set the COLOR TEMPERATURE to LOW.
(4) Select 1.PICTURE/SOUND from the SERVICE
MODE.
(5) Set the initial setting values of the < S10 > (DRIVE R)
and < S12 > (DRIVE B).
(6) Return to the main menu in SERVICE MODE.
(7) Select the 3.WHITE BALANCE from SERVICE
MODE.
(8) Adjust the screen until it becomes white using the
[2] ,[3], [5] and [6] keys.
(9) Press the [MUTING] key to memorize the set value.
(10) Make sure that the WHITE BALANCE tracking from
the LOW-LIGHT through the HIGH-LIGHT has been
properly done. [When the black and white signal
(color off) is received, the natural white should be
visible.]
(11) Input the 480i component
COMPONENT VIDEO terminal.
(12) Repeat the steps 7. to 9. as above.
(13) Input the 1080i component video signal to
COMPONENT VIDEO terminal.
(14) Repeat the steps 7. to 9. as above.
(15) If there is a gap with the initial setting values, repeat
the steps 7. to 9. for readjustment.
video signal to