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Electrical Adjustments
1. Fan voltage adjustment
Equipment Digital voltmeter
1. Enter the service mode.
2. Adjust the voltage on each test point by changing the
data values of Group - No.
Group - No. Test Points Adjustment value
250 - 0 TPFANA 4.0 ±0.1Vdc
250 - 1
TPFANA 13.5 ±0.1Vdc
250 - 2
TPFANB 5.2 ±0.1Vdc
250 - 3
TPFANB 13.5 ±0.1Vdc
250 - 4
TPFANC 3.5 ±0.1Vdc
250 - 5
TPFANC 12.0 ±0.1Vdc
2. Auto calibration adjustment [PC]
Input mode Computer 1 (RGB)
Input signal XGA Computer signal
Signal pattern 16-step gray scale
1. Enter the service mode.
2. Select Group “260”, No. “0” and set the data value
to “1”.
The projector begins auto-calibration and then "OK"
will appear on the screen.
Below adjustments are performed when the above auto
calibration is failed.
Gain adjustment [PC]
Equipment Oscilloscope
1. Enter the service mode.
2. Adjust the amplitude “a” of waveform at each test
point to be minimum by changing the data value of
Group - No.
Group - No. Test Points
0 - 3 TP35G
0 - 4 TP35R
0 - 5 TP35B
Pedestal adjustment [PC]
Equipment Oscilloscope
1. Enter the service mode.
2. Adjust the black level on each test point to be minimum
by changing the data value of Group - No.
Group - No. Test Points
0 - 0 TP35G
0 - 1 TP35R
0 - 2 TP35B
Adjustments item no. [2] and [4] are carried out
at the spare parts shipment in the factory, there-
fore they are not required when the main board is
replaced with new one.
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