White Balance Adjustment - Christie LX1750C Service Manual

Electrical Adjustment

11. White balance adjustment

Input mode Adjusted input mode (for checking)
Signal pattern 16-step gray scale
Advanced color Auto and Off
Lamp mode 4-Lamps and 2-Lamps
1. Enter the service mode.
2. Select Group and No. of white balance adjustment
items referring to the table below. For example, when
adjusting the white balance in the Standard PC mode
with Advanced color : Auto, select Group - No. "982 -
1 (X value)" or "982 - 2 (Y value)".
3. Change the Data value.
4. Select Group "980", No. "0". When the Data value
is changed "0" to "10", the adjustment is performed
automatically. The Data value is returned from 10 to 0
after finishing the adjustment. It takes for 2-3 minutes
to complete the adjustment.
5. Check proper white balance and gray scale are ob-
tained in the selected input mode.
❉ This white balance adjustment can be done in each
lamp mode of "4-Lamps" and "2-Lamps". To switch the
lamp mode, follow to the below table.
Group-No. Data value
930 - 0 10
930 - 1 10
930 - 2 10
* The lamp mode will change when the value of data is
set to 10.
6. Select Group "930", if the value of each lamp mode is
set "1" as shown in the figure below, the white balance
adjustment is performed correctly, if "0", adjustment is
not done or failed. Readjust again.
Service mode
Input Input 1
Image Standard
Group No. Data
930 0 0
Ver 1.00
4L
Ye Auto 1
Ye Off 1
* Ye Auto: Advanced color Auto
LX1750 Service Manual
020-000643-01 Rev.1 (01-2014)
Selected lamp mode
4-Lamps
2-Lamps 1 (Lamp 1,4 on)
2-Lamps 2 (Lamp 2,3 on)
99: on changing the
lamp mode
11: present lamp mode
Gamma
2L-1 2L-2
1 1
1 1
0: not done or failure
1: done
Advanced color mode:
Group-No.
Input Adjustment Mode (X, Y)
982 - 1 Advanced color-Auto: PC Standard -X
982 - 2 Advanced color-Auto: PC Standard -Y
982 - 11 Advanced color-Auto: PC Real -X
982 - 12 Advanced color-Auto: PC Real -Y
982 - 21 Advanced color-Auto: PC Dynamic -X
982 - 22 Advanced color-Auto: PC Dynamic -Y
982 - 31 Advanced color-Auto: AV Standard -X
982 - 32 Advanced color-Auto: AV Standard -Y
982 - 41 Advanced color-Auto: AV Cinema -X
982 - 42 Advanced color-Auto: AV Cinema -Y
982 - 51 Advanced color-Auto: AV Dynamic -X
982 - 52 Advanced color-Auto: AV Dynamic -Y
983 - 1 Advanced color-Off: PC Standard -X
983 - 2 Advanced color-Off: PC Standard -Y
983 - 11 Advanced color-Off: PC Real -X
983 - 12 Advanced color-Off: PC Real -Y
983 - 21 Advanced color-Off: PC Dynamic -X
983 - 22 Advanced color-Off: PC Dynamic -Y
983 - 31 Advanced color-Off: AV Standard -X
983 - 32 Advanced color-Off: AV Standard -Y
983 - 41 Advanced color-Off: AV Cinema -X
983 - 42 Advanced color-Off: AV Cinema -Y
983 - 51 Advanced color-Off: AV Dynamic -X
983 - 52 Advanced color-Off: AV Dynamic -Y
12. Wind sensor calibration
1. Enter the service mode.
2. Select Group "240" and No. "2". Confirm the Data val-
ue is "1".
0: Wind sensor function Disable
1: Wind sensor function Enable
3. Select Group "240" and No. "0".
4. To start the adjustment, change the Data value from
"0" to "1". After the auto-calibration completed, "OK"
will appear on the screen.
IMPORTANT
Before taking this adjustment, you need to replace the
air filter with new one, and the cabinet top, filter unit,
projection lens, etc. are securely installed.
-77-
Data (Initial value)
310
330
315
340
300
320
310
330
319
333
300
320
295
325
300
330
285
315
300
330
313
329
295
325