3-1
VPH-G90E/G90U/G90M
SECTION 3
SET-UP ADJUSTMENTS
3-1. PRECAUTIONS UPON
ADJUSTMENT
1. When the CRT (a cathode-ray tube) has been replaced,
fix the DY (deflection yoke) to the funnel and decide
the position of the neck assembly before beginning
adjustments.
2. When the power is turn off, the service mode is
canceled.
3-2. ATTACHING THE NECK ASSEMBLY
1. Fix DY to the CRT funnel, then fix the Magnet Focus
Coil.
2. Tentatively secure the 2-pole and 4-pole magnet
assembly in contact with the Magnet Focus Coil.
3. Attach the CB board.
3-3. ADJUSTING CONDITIONS
3-3-1. Projecting System
Place the unit on a table which satisfies the projection
conditions as shown in the figure.
Basic Optical System
Inclination Angle at Top and Bottom
Left and Right Tilt of the Unit
0
d
+
_
Unit
(Top view)
Within 0
±
0.5
d
VPS-120F
Center
Lens center
3,278
VPH-G90
3,373
Unite: mm
1,071
Specifictions:
0
d
0
+
+
0.2
d
_
0.5
d
_
(Side view)
Within
Fannel
Main DY
Sub DY
Mg focus
2-pole and 4-pole
magnet
Wedge
Spacer (DY)
Summary of Contents for VPH-G90E
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