-41-
Electrical Adjustment
[Adjustment Condition]
● Input signal
Video signal ......................
1.0Vp-p/75W terminated, 16 steps gray scale
(Composite video signal)
Computer signal ................. 0.7Vp-p/75W terminated, 16 steps gray scale
pattern
Component Video signal .... 0.7Vp-p/75W terminated, 16 steps gray scale
(Component video signal with 480p, 575p,
720p or 1080i format)
● Picture control mode ......
“STANDARD” mode unless otherwise noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering the service mode and adjusting the service
data.
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.
16 steps gray scale pattern
x Fan Voltages adjustment
1. Enter the service mode.
2. Connect a digital voltmeter to test point
A (+) and
chassis ground (-). (7 test points are provided for this
adjustment, perform all the voltage adjustments in
the table below.)
3. Select group no. “140”. Select item no. B and
change data value to adjust the voltage to be C - 0.1V
+ 0V, and select item no. D and change data value
to adjust the voltage to be E ±0.1V.
4. Repeat step 2 to 3 for the remaining test points in
the table below.
Test Point A Item B Voltage C Item D Voltage E
TPFN5 0 13.8 1 5.0
TPFN3 2 13.8 3 5.0
TPFN4 2 13.8 3 5.0
TPFN2
4 13.8 5 5.0
TPFN1 6 13.8 7 5.0
TPFN7 8 13.8 9 5.0
TPFN6 10 13.8 11 5.0
* 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
3. Panel Type 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 is reset 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.
z Panel Type Check and Setting
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