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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
pattern
● 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
WARNING : USE UV RADIATION EYE AND SKIN
PROTECTION DURING SERVICING.
CAUTION:
To prevent suffer of UV radiation, those adjustments
must be completed within 25 minutes.
z Fan Voltages adjustment
1. Enter the service mode.
2. Connect a digital voltmeter to test point
A (+) and
chassis ground (-). (3 test points are provided for this
adjustment, perform all the voltage adjustments in
the table below.)
3. Select group no. “250”. Select item no. B and
change data value to adjust the voltage to be 4.5 ±
0.05V.
4. Select group no. “250”. Select item no. C and
change data value to adjust the voltage to be 13.8 ±
0.05V.
5. Repeat step 2 to 4 for the remaining test points in
the table below.
Test Point A Item No. B Item No. C
K66D-1 0 1
K66E-1 2 3
K66F-1 4 5
* 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 changes ac-
cording to your selection.
x Panel Type Check and Setting
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.
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