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[Focus Adjustment]
1. Input the dot signal or cross hatch signal.
2. Set the following OF adjustment data to the center value
(128).
DF SIDE
DF CORNER
DF SIDE PHASE
DF T&B PHASE
DFT&B
Note:The above adjustment menu is under the E BOARD
menu of the MAINTENANCE menu.
3. Adjust the center of the screen to the optimum focus using
the FOCUS
1
YR (venical focus adjustment) and FOCUS
2
VR (horizontal focus adjustment).
4. Input the cross hatch signal.
5.
Adjust the following OF adjustment data so that the cross
hatch lines at the ends of the screen become the same
thickness as those at the center of the screen.
DF SIDE
DF CORNER
DF SIDE PHASE
DF T&B PHASE
DFT&B
6. Adjust the DF data in the same way in the following modes.
4 : 3
UNDERSCAN mode
16 : 9 NORMAL SCAN mode
16 : 9 UNDER SCAN mode
FOCUS 1
Fig. 1-1.
4-2
[Landing Adjustment]
I. Input the white signal.
2. Press the BRIGHTNESS YR and CONTRAST YR buttons
to the preset condition. (The LEDs (green) on the buttons go
off.)
3. Face the CRT screen towards the east (west) and press the
DEGAUSS button.
4. Set the Purity knob to the mechanical center.
Purity control
14-inch model
Purity knob
20-inch model
4-pole magnet
(fixation)
6-pole magnet
(fixation)
6-pole magnet
Fig. 1-2.
Purity control
5. Push the DY (deflection
york)
to
the front as much as
possible.
6. Secure the neck assembly in the position shown in Fig. 1-3.
20-inch model
I
Neck assembly
I
I
I
14-inch model
I I
Neck assem11y
Fig. 1-3.
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