Specifications

Page 37
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: WT-46809 / WS-55809 / WS-55819 / WS-65809 / WS-65819
To improve edge focus.
Poor focus at the edges of the screen.
[Focus Circuit]
13. Dynamic Focus Preset
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Monoscope
Video Input
1. Supply a Monoscope signal to a Video Input
2. Activate the Convergence Mode.
3. Select the DF Function under the Conv. Coarse Mode.
4. Set Items “0 DFH” and “1 DFV” to the data values given in the DF Table.
5. Press “6” to activate CONV-MISC
6. Set “0 FPHS” and “1 DPHS” to data values given in the CONV-MISC Table.
5. Exit the Conv. Mode.
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Monscope & Crosshatch
Video Input
[CRT Circuit]
14. Electrostatic Focus &
(Alignment Magnet)
To set electrostatic focus to the optimum point.
Poor focus.
Note: This adjustment must be performed after the Sub Contrast adjustment.
Alignment Magnet Adjustment (WS-55819 and WS-65819 Only)
This adjustment must be performed before Static Focus Adjustment
1. Supply a Crosshatch with Center Dot signal to a Video Input.
2. Select a Green raster using the table below.
3. Roughly adjust Green Focus VR.
4. Rotate Green Focus VR CCW so the center dot is about 10mm diameter.
5. Adjust the Green 4 Pole Magnet for the roundest center dot.
6. Set the Green Focus VR for optimum focus.
7. Repeat the procedure with a Red raster and adjust the Red 4 Pole Magnet.
8. Use silicon to lock the magnets in place.
Static Focus Adjustment (All Models)
1. Supply a Monoscope signal to a Video Input
2. Activate A/V Reset
3. Select Red, Green or Blue rasters using the table below.
3. Set the Red, Green and Blue Focus VRs for optimum focus at the top center of
the picture..
Raster Color Selection
Color Raster Activation Code
Red MENU-0-1-5-9-1
Green MENU-0-1-5-9-2
Blue MENU-0-1-5-9-3
CIRCUIT ADJUST MODE
Activate …….. MENU-0-1-5-7
Function …...………..AUDIO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Save Data …. ………ENTER
Exit …………..MENU (twice)
DF
(MENU-0-1-5-9 then "AUDIO"
)
ITEM ABBR. DATA
0 DFH 235
1 DFV 100
CONV MISC
(MENU-0-1-5-9-6)
ITEM ABBR. DATA
0 FPHS 200
1 DPHS 245