Panasonic PT-TW230E

-38-
Electrical Adjustments
4. Auto calibration adjustment [Component]
Input mode Computer 1 (Component)
Input signal 480i component signal
Signal pattern 8 color bar
1. Enter the service mode
2. Select Group "260", No. "0" and then change data
value from "0" to "1". After the auto-calibration com
pleted, "OK" will appear on the screen.
Below adjustments are performed when the above auto
calibration is failed.
Gain adjustment [Component]
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
(a)
White Level
5. Auto calibration adjustment [Video]
Input mode Video
Input signal Composite video signal
Signal pattern 16-step gray scale
1. Enter the service mode.
2. Select Group "260", No. "0" and then change data
value from "0" to "1". After the auto-calibration com-
pleted, "OK" will appear on the screen.
Below adjustment is performed when the above auto
calibration is failed.
Pedestal adjustment [Component]
Input signal 480i component signal
Signal pattern 16-step gray scale
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
Gain adjustment [Video]
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
20 - 0 TP35G
(a)
White Level