Panasonic PT-TW231RE, Руководство по обслуживанию

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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
K6W-4
4.5±0.1Vdc
250 - 1
K6W-4
13.5±0.1Vdc
250 - 2
K6W-3
5.0±0.1Vdc
250 - 3
K6W-3
13.5±0.1Vdc
250 - 4
K6W-2
5.0±0.1Vdc
250 - 5
K6W-2
13.5±0.1Vdc
3. 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.
Adjustments item no. [3] and [5] 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.
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
(a)
White Level
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
Black Lebel
2. Panel type check and setting
* Before setting, you need to check which type of LCD
panel is placed on the projector according to the item
"LCD panel/prism assy removal" in the chapter "Optical
Parts Disassembly".
1. Enter the service mode.
2. Panel Type Check
Select Group “
290
”, 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
If the mounted LCD panel type and set Panel mode are
differ, take the step below.
3. Panel Type Mode Setting
Select Group “
290
”, No. “
1
” and change the 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 accord-
ing to your selection.