MITSUBISHI ELECTRIC WS-48513 - Manual (Page 44)

Page 44
Purpose:
Measuring
Instrument
Test Point
Measuring
Range
Input Signal
Ext. Trigger
Input Terminal
Symptom:
Purpose
Measuring
Instrument
Test Point
Measuring
Range
Input Signal
Ext. Trigger
Input Terminal
Symptom:
MODELS: WS-48513 / WS-48613 / WS-55513 / WS-55613 / WS-55813 / WS-65513 / WS-65613 / WS-65713 /
WS-65813 / WS-73513 / WS-73713
DC ma meter
------
------
------
NTSC White Raster
RF or Video
[CRT Circuit]
5. White Balance (NTSC)
To set the CRTs white level in the NTSC mode.
Monochrome has a color tint.
Note: Use the “FORMAT” button to activate the Expand mode (full screen).
1. Supply a full White Raster Signal
2. Activate the Service Mode, VC function.
3. Adjust Items “4 RDRH” and “6 BDRH” for optimum white at the center of
the screen.
4. Reduce the input luminance level to 25%.
5. Adjust Items “7 CTRH” and “9 CTBH” for optimum white.
6. Insert a Milliammeter in series with each CRT Cathode. The maximum
allowable current for each CRT is given in the table below.
7. Set the white raster to 100% and adjust Items “10 RDRL” and “12 BDRL” for
optimum white at the center of the screen.
8. Reduce the luminance level to 25%.
9. Adjust Item “13 CTRL” and “15 CTBL” for optimum white.
10. Set the data for Item “19 COL” back to 31.
CIRCUIT ADJUST MODE
Activate …….. MENU-0-3-5-7
Function …...………..AUDIO
Item No. ……….…….VIDEO
Adjus t Data ….…….ADJUST
Save Data …. ………ENTER
Exit …………..MENU (twice)
To set the CRTs white level in the HD mode.
Monchrome pictures have a color tint.
[CRT Circuit]
6. White Balance (HD)
-----
-----
------
-----
HD White Raster
DTV Inputs
1. Supply an HD Full White Raster signal to the DTV Inputs.
2. Select the DTV Inputs (Input button)
3. Activate the Adjustment mode, VC Function.
4. Set Item “19 COL” to 0.
5. Adjust Items “4 RDRH” and “6 BDRH” for optimum white at the center of the
screen.
6. Reduce the input signal luminance to 25%.
7. Adjust Items “7 CTRH” and “9 CTBH” for optimum white.
8. Set the data for Item “19 COL” back to 31.
CIRCUIT ADJUST MODE
Activate …….. MENU-0-3-5-7
Function …...………..AUDIO
Item No. ……….…….VIDEO
Adjus t Data ….…….ADJUST
Save Data …. ………ENTER
Exit …………..MENU (twice)
Maximum CRT Current
CRT
WS-48513 WS-55613 WS-65613
WS-48613 WS-55813 WS-65713
WS-55513 WS-65513 WS-65813
WS-73513
WS-73713
RED 580ua 900ua
GREEN 580ua 900ua
BLUE 580ua 900ua