- 43 -
Service Adjustment
Pedestal adjustment [PC]
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Com-
puter1 [RGB]
mode.
3. Connect an oscilloscope to test point “
TP35G
” (+) and
chassis ground (-).
4. Select group no. “
0
”, item no. “
0
” and change data value
to adjust the pedestal level and black level to be the same
level.
5. Connect an oscilloscope to test point “
TP35R
” (+) and
chassis ground (-).
6. Select item no. “
1
” and change data value to adjust the
pedestal level and black level to be the same level.
7. Connect an oscilloscope to test point “
TP35B
” (+) and
chassis ground (-).
8. Select item no. “
2
” and change data value to adjust the
pedestal level and black level to be the same level.
P
edestal Lebel
Blac
k Lebel
Gain adjustment [PC]
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Com-
puter1 [RGB]
mode.
3. Connect an oscilloscope to test point “
TP35G
” (+) and
chassis ground (-).
4. Select group no. “
0
”, item no. “
3
” and adjust the amplitude
“
a
” to be minimum by changing the Data value.
5. Connect an oscilloscope to test point “
TP35R
” (+) and
chassis ground (-).
6. Select group no. “
0
”, item no. “
4
” and adjust the amplitude
“
a
” to be minimum by changing the Data value.
7. Connect an oscilloscope to test point “
TP35B
” (+) and
chassis ground (-).
8. Select group no. “
0
”, item no. “
5
” and adjust the amplitude
“
a
” to be minimum by changing the Data value.
(a)
White Level
1. Enter the service mode.
2. Receive the 16-step grey scale computer signal with
Com-
puter1 [RGB]
mode.
Lamp control
High
mode.
G-sync Off
3. To start the auto-calibration for PC adjustment, select
group no. “
260
”, item no. “
0
” and then change data value
from “
0
” to “
1
”. After the auto-calibration completed, "OK"
will appear on the screen.
3. Auto Calibration adjustment [PC]
* Before setting, you need to check which type of LCD panel 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 val-
ue from 10 to 0 or 20 depending on your LCD Panel type.
When the data value reaches 0 or 20, it returns to 10 quick-
ly. The gamma-characteristics changes according to your
selection.
2. Panel Type Check and Setting
Below adjustments are performed when the above auto
calibration is failed.
White 100%
Black 100%
Summary of Contents for PLC-XE50
Page 79: ... 79 IC Block Diagrams BA7078 Sync Separator IC5301 AN5870 Signal Switch IC5201 ...
Page 80: ... FA5502 P F Control IC601 HIN202EIB RS 232C Driver IC3801 80 IC Block disgrams ...
Page 82: ... L3E01060 Level Shift IC2501 IC2531 IC2561 M62334 DAC IC3501 82 IC Block disgrams ...
Page 83: ... NJW1141 Audio Control IC5001 PW190 Scaler IC301 83 IC Block disgrams ...
Page 84: ... STR Z2156 Power OSC IC651 84 IC Block disgrams ...
Page 106: ...Integrator Lens In 109 102 106 Mechanical Parts List ...
Page 107: ...103 113 104 111 117 118 108 112 112 107 105 106 107 Mechanical Parts List ...
Page 109: ... 109 ...
Page 110: ... 110 ...
Page 111: ... 111 ...
Page 112: ...SM5110899 00 PLC XE50 Nov 2007 DC 350 Printed in Japan ...