No. 51957
GM-P421U
GM-P420UG
45
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.
*
1080i video signal : Window pattern, (illumination intensity :
70%)
WHITE
BALANCE
(1080i)
adjustment
Video signal
generator
Color
Temperature
WG01
(R DRIVE)
WG02
(G DRIVE)
WG03
(B DRIVE)
WH01
(R DRIVE)
WH02
(G DRIVE)
WH03
(B DRIVE)
1. Input the 1080i 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
>
WG01 (R
DRIVE) and WG02 (G DRIVE) so that the c olor temperature
becomes the HIGH adjusting point given the table. Keep the
value in the WG03 (B DRIVE) at "255".
4. If the adjustment cannot be done according to the step 3.
above, return the values in the WG01 (R DRIVE) and WG02
(G DRIVE) to "255" temporarily and fixe the value in the WG02
(G DRIVE) to "255". Then adjust the values in the WG01
(R DRIVE) and WG03 (B DRIVE).
5. Select the LOW with the steps of
<
MAIN MENU
> →
<
FUNCTION SELECT
>→
COLOR TEMP
6. Adjust the values in the
<
SERVICE MENU
>
WH02 (G
DRIVE) and WH03 (B DRIVE) so that the color temperature
becomes the LOW adjusting point given the table. Keep the
value in the WH01 (R DRIVE) intact.
7. If the adjustment cannot be done according to the step 6.
above, return the values in the WH02 (G DRIVE) and WH03
(B DRIVE) to "255" temporarily and fixe the value in the WH02
(G DRIVE) to "255". Then adjust the values in the WH01
(R DRIVE) and WH03 (B DRIVE).
Color Temp.
Color Temp. adjusting point
HIGH (equivalent D93)
x = 0.283
y = 0.291
LOW (equivalent to D65)
x = 0.313
y = 0.329