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Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the following
adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance
and product safety. Before taking these adjustments, turn the projector for more than 10 minutes to sta-
bilize the operation.
[Adjustment Condition]
● Input signal
Analog Computer signal ..... 0.7Vp-p/75W terminated (XGA)
Composite Video signal ...
1.0Vp-p/75W terminated (NTSC / PAL)
Component Video signal .... 0.7Vp-p/75W terminated (480i, 480p, 720p, 1080i)
● Picture control mode ..........
“STANDARD” mode unless otherwise noted.
● Lamp control .......................
“Normal” mode unless otherwise noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering the service mode and adjusting the service data.
16 steps gray scale pattern
100% full color bar pattern
z Fan Voltages adjustment
Equipment Digital voltmeter
1. Enter the service mode.
2. Adjust the voltage on each test point by changing the
data values of the Group - No.
Group No. Fan Test Point Adjustment value
250 - 0 FN901 TP_FN1 4.5 +0.06 -0Vdc
250 - 1 FN901 TP_FN1 13.8 +0 -0.06Vdc
250 - 2 FN902 TP_FN2
4.5 +0.06 -0Vdc
250 - 3 FN902 TP_FN2
13.8 +0 -0.06Vdc
250 - 4 FN903 TP_FN3 4.5 +0.06 -0Vdc
250 - 5 FN903 TP_FN3 13.8 +0 -0.06Vdc
250 - 6 FN904 TP_FN4 3.0 +0.06 -0Vdc
250 - 7 FN904 TP_FN4 13.8 +0 -0.06Vdc
250 - 8 FN905 TP_FN5
3.0 +0.06 -0Vdc
250 - 9 FN905 TP_FN5 13.8 +0 -0.06Vdc
250 - 10 FN906 TPFN6 12.0 ±0.05Vdc
250 - 11 FN907 TPFN7 12.0 ±0.05Vdc
250 - 12 FN908 TPFN8 12.0 ±0.05Vdc
x Video center adjustment
Equipment Digital voltmeter
Input mode Computer mode
Input signal 16-step gray scale computer signal
1. Enter the service mode.
2. Adjust the voltage on each test point by changing the
data values of the Group - No.
Group No. Test Point Adjustment value
106 - 0 TP_VMIDG
7.0 ±0.03Vdc
106 - 1 TP_VREFR
9.5 ±0.03Vdc
106 - 2 TP_VREFG 9.5 ±0.03Vdc
106 - 3 TP_VREFB 9.5 ±0.03Vdc
Electrical Adjustments