White Balance Adjustment - FUNAI F42PDME Service Manual

1. Auto Calibration (Black & White)
1. Operate the unit more than 20 minutes.
2. Input black raster signal from only Component AV In-
put (2) video/Y jack (green). Do not input any signal
to Component AV Input (2) video/Pb or Pr jack.
3. Enter the service mode.
4. To enter the Auto Calibration (Black) adjustment
mode, press "2" button on the service remote con-
trol unit. If no signal, "No signal" appears on the
screen.
5. To start auto adjustment, press "CH o" button on
the service remote control unit.
6. Input white raster signal (100% or 110%) from only
Component AV Input (2) video/Y jack (green). Do not
input any signal to Component AV Input (2) video/Pb
or Pr jack.
7. To enter the Auto Calibration (White) adjustment
mode, press "3" button on the service remote con-
trol unit. If no signal, "No signal" appears on the
screen.
8. To start auto adjustment, press "CH o" button on
the service remote control unit.
9. Upon completion, wait for at least 5 seconds.
10. Unplug AC cord and plug it in AC outlet again to reset
then enter the service mode again.
11. Confirm that both the "Black Calibration : Complete"
and "White Calibration : Complete" are displayed
on the screen as shown in Fig. 4. If "Yet" is dis-
played instead of "Complete", repeat above steps.
MAIN UCOM Ver. : ********
SUB UCOM Ver. : ********
MEMORY SIZE : 32
CHKSUM : Push 0 key
Black Calibration : Complete
White Calibration : Complete

2. White Balance Adjustment

Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test
Point
CH o / p
Screen
buttons
Pattern Generator,
Color analyzer
Notes:
- Use service remote control unit.
- This adjustment should be performed in both Com-
ponent 2 mode and Video 1 mode. Adjustment in
Component 2 mode should be performed after com-
pletion of ADC calibration adjustment.
1. Operate the unit more than 20 minutes.
2. Input the gray scale pattern signal (5 scales) from
Component AV Input (2) video/Y jack.
3. Set the color analyzer to the CHROMA mode and
after zero point calibration, for high light adjust-
ment, bring the optical receptor to the 2nd scale as
shown below.
Fig. 4
4. Enter the Service mode.
1-6-2
Adj.
Mode
Point
Video 1 &
Component 2
M. EQ.
Figure
Color Analyzer
2nd gray scale
Input
Gray scale
pattern signal
(5 scales)
Spec.
See below
Fig. 5
Fig. 6
L0605EA