JVC HD-Z56RF7/A Service Manual page 33

4.7.2 DRIVE CIRCUIT
Measuring
Item
instrument
DRIVE Remote
CONVERGENCE control unit
[Hprizontal adjustment]
R
Adjustment colour
DRIVE CENTRE Remote
POSITION control unit
Signal
generator
(B=B")
B
A
A"
RGB
(A=A")
Adjustment colour
Test point Adjustment part
[9.RGB BOX PATTERN]
[9.RGB BOX PATTERN]
B"
Description
(1) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE
MODE.
(2) Press the [9] key, to select "RGB BOX
PATTERN MODE" from the SERVICE MODE.
(3) Set the adjustment colour mode to "R" to set
the red colour adjustment mode.
(4) At Horizontal RGB box pattern, adjust the top
edge position as same or less than 0.5 pixel
hight as green.
(5) At Vertical RGB box pattern, adjust the right
edge position as same or less than 0.5 pixel
hight as green.
(6) Set the adjustment colour mode to "B" to set
the blue colour adjustment mode.
(7) At Horizontal RGB box pattern, adjust the top
edge position as same or less than 0.5 pixel
hight as green.
(8) At Vertical RGB box pattern, adjust the right
edge position as same or less than 0.5 pixel
hight as green.
(9) Check to see that the cross pattern is white. If
the cross pattern is not white, repeat the step
3. to 8. as abobe.
NOTE:
• Green is fixed. (It can not be removed.)
• With this adjustment mode, the changed data is
written in the MEMORY instantly.
(1) Receive a centre cross (or crosshatch) pattern.
(2) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE
MODE.
(3) Press the [9] key, to select "RGB BOX
PATTERN MODE" from the SERVICE MODE.
(4) Set the adjustment colour mode to "RGB" to
set the display position adjustment mode.
(5) Adjust the top and the bottom width to make A
and A" even.
(6) Adjust the left and the right width to make B
and B" even.
NOTE:
• With this adjustment mode, the changed data is
written in the MEMORY instantly.
(No.YA460)1-33