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Electrical Adjustments
c Panel Type Check and Setting
* Before setting, you need to check which type of LCD pan-
el is placed on the projector according to the item "LCD
Panel/Prism Ass'y removal" in the chapter "Optical Parts
Disassembly".
1. Enter the service mode.
2. Panel Type Check
Select group no. “290”, item no. “0”. Check the data
value as follows;
Data value: 0 For L-Type of LCD Panel
Data value: 20 For R-Type of LCD panel
If the mounted LCD panel type and set Panel mode
are differ, take the step below.
3. Panel Type Mode Setting
Select group no. “290”, item no. “1” and change data
value from 10 to 0 or 20 depending on your LCD Panel
type. When the data value reaches 0 or 20, it returns
to 10 quickly. The gamma-characteristics changes ac-
cording to your selection.
Note:
Be careful to take this adjustment. The value of gamma
adjustment data will be reset and cannot be restored if
you change the mode of LCD panel type
b
Component Auto calibration
Input mode Computer 1 (Component) mode
Input signal 100% color bar signal (480i)
1. Enter the service mode.
2.
Select Group "260", No. "0" and set data value "0" to
"1".
The projector begins auto-calibration and then "OK"
will appear on the screen.
n Video Auto calibration
Input mode Video (Video) mode
Input signal 16-step gray scale composite video
signal
1. Enter the service mode.
2.
Select Group "260", No. "0" and set data value "0" to
"1".
After the auto-calibration completed, "OK" will appear
on the screen.
Adjustments item no. [4] to [6] are carried out at the
spare parts shipment in the factory, therefore they are
not required when the main board is replaced with
new one.
z Fan Voltages adjustment
Equipment Digital voltmeter
1. Enter the service mode.
2. Connect the Digital voltmeter to the test point listed
below.
3. Adjust the voltage on each test point by changing the
data values of the Group - No.
Group No. Test Point Adjustment value
250 - 0 TPFANA 4.5 ±0.1Vdc
250 - 1 TPFANA 13.5 ±0.1Vdc
250 - 2 TPFANB 5.0 ±0.1Vdc
250 - 3 TPFANB 13.5 ±0.1Vdc
250 - 4 TPFANC 5.0 ±0.1Vdc
250 - 5 TPFANC 13.5 ±0.1Vdc
v PC Auto calibration
Input mode Computer 1 (RGB) mode
Input signal 16-step gray scale computer signal
1. Enter the service mode.
2.
Select Group "260", No. "0" and set data value "0" to
"1".
The projector begins auto-calibration and then "OK"
will appear on the screen.
x Black Level adjustment
Input mode Computer 1 (RGB) mode
Input signal 16-step gray scale computer signal
Equipment Digital voltmeter
1. Enter the service mode.
2. Connect the Digital voltmeter to the test point listed
below.
3. Adjust the voltage by changing the data values of the
Group - No.
Group No. Test Point Adjustment value
101 - 16 TP_VREF 10.0 ±0.01Vdc
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