Eiki LC-XT6, Service Manual

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Electrical Adjustment
c
LCD panel L/R setting
There are two type( Type L, Type R) for the LCD/Prism
Assy. The adjustment data is stored in the memory IC on
the main board.
As the used type is indicated on the optical unit and
LCD/Prism assy, perform this adjustment to match to its
type indication.
1. Enter the service mode.
2. Check the data value. (140 - 0)
Group No.
Value Panel type
140 - 0 0 L
140 - 0 20 R
3. To change the set panel type, select 140-1.
Group No.
Value Panel type
140 - 1 0 L
140 - 1 10 Initial
140 - 1 20 R
The initial data of 140 -1 is "10". To set the value for Type
L, set the value to "0". To set the value for Type R, set the
value to "20". When the value set "0" or "20", it automati-
cally returns to initial data "10" after the setup.
x
Power supply adjustment
Equipment Digital voltmeter
Test points K6F-1(+) and K6F-5(-) on AC-DC
board
Input AC Voltage 230V
Adjust the volumes to be specified voltage as follow;
Volume Voltage
VR631 24.5 ±0.1Vdc
This adjustment is not required even if the AC-DC
board is replaced because this adjustment is carried
out before parts shipment.
Equipment Digital voltmeter
Input AC Voltage 230V
Connect a digital voltmeter to test points and adjust the
volumes to be specified voltage as follow;
Test Points on PFC board Volume Voltage
K16B1 (+) K16B2 (-) VR1601 390Vdc
K16C1 (+) K16C2 (-) VR1651 390Vdc
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
z
Output voltage adjustment
This adjustment is not required even if the PFC board
is replaced because this adjustment is carried out be-
fore parts shipment.
v
Auto calibration (PC)
Input mode Input 1 [RGB (PC Analog)]
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
" 0 " to " 1 ". The projector begins auto-calibration and
then "OK" will appear on the screen.
b
Auto calibration (Video)
Input mode Input 2 [Video]
Input signal Composite video signal
Signal pattern 8-color bar
1. Enter the service mode.
2. Select Group "
260
", No. "
0
" and set the Data value
"
0
" to "
1
". The projector begins auto-calibration and
then "OK" will appear on the screen.