No. 51957
GM-P421U
GM-P420UG
44
Item
Test equipment
Test points
Ad justment
locations
Ad justment procedure
*
Carry out aging for more than 20 minutes. When the AC is input
again, wait for more than 5 minutes before mak ing adjustments.
*
The PICTURE ADJ. in the MAIN MENU should be initialized.
*
This adjustment should be c arried out after making RGB offset
adjustment and the adjustment should be done in the step of
HIGH
→
LOW, in turn.
*
480i video signal : W indow pattern, (illumination intensity :
70%)
WHITE
BALANCE
(480i)
adjustment
Video signal
generator
Color
Temperature
WE01
(R DRIVE)
WE02
(G DRIVE)
WE03
(B DRIVE)
WF01
(R DRIVE)
WF02
(G DRIVE)
WF03
(B DRIVE)
1. Input the 480i video signal window pattern to the COMPONENT
terminal.
2. Select the HIGH with the steps of
<
MAIN MENU
> → <
FUNCTION SELECT
>→
COLOR TEMP.
3. Adjust the values in the
<
SERVICE MENU
>
WE01 (R
DRIVE) and WE02 (G DRIVE) so that the c olor temperature
becomes the HIGH adjusting point given the table. Keep the
value in the WE03 (B DRIVE) at “255”.
4. If the adjustment cannot be done according to the step 3.
above, return the values in the WE01 (R DRIVE) and W E02
(G DRIVE) to "255" temporarily and fixe the value in the W E02
(G DRIVE) to "255". Then adjust the values in the W E01
(R DRIVE) and WE03 (B DRIVE).
5. Select the LOW with the steps of
<
MAIN MENU
> →
<
FUNCTION SELECT
>→
COLOR TEMP.
6. Adjust the values in the
<
SERVICE MENU
>
WF02 (G
DRIVE) and W F03 (B DRIVE) so that the c olor temperature
becomes the LOW adjusting point given the table. Keep the
value in the WF01 (R DRIVE) intact.
7. If the adjustment cannot be done according to the step 6.
above, return the values in the WF02 (G DRIVE) and WF03
(B DRIVE) to "255" temporarily and fixe the value in the WF02
(G DRIVE) to "255". T hen adjust the values in the WF01
(R DRIVE) and WF03 (B DRIVE).
Color T emp.
Color T emp. adjusting point
HIGH (equivalent D93)
x = 0.283
y = 0.291
LOW (equivalent to D65)
x = 0.313
y = 0.329