1-75
VPH-G90E/G90U/G90M
88
Adjustments
Adjustments
4
Repeat steps
2
and
3
so that the core of a spot is located at the
center of the flare.
5
Select ALL again, then set the value to –80 so that the spot is
focused.
6
Select 4PA, then correct the vertical and horizontal distortion of the
spot.
7
Select 4PD, then correct the diagonal distortion of the spot.
8
Select 6PA and correct the vertical triangular-form distortion of the
spot.
9
Select 6PD and correct the diagonal triangular-form distortion of
the spot.
0
Repeat steps
6
to
9
so that the spot becomes a correct circle.
!¡
Select ALL, display the ME-pattern by pressing the PATTERN key,
and adjust so that the spot is in focus.
4
Adjust the AHP/DHP at corners of the screen. (in expert mode only)
For details, see “AHP/DHP adjustment” on page 89.
5
Press the PATTERN key repeatedly to display the ME-pattern.
6
Press the PO key once to enter the focus adjustment mode
for the upper parts (position No.2).
When you press the PO key, the part to be adjusted cycles
through the order as illustrated on the left. The position number is
displayed at the upper right corner.
If you press the POSITION – key, the part cycles through the reverse
order.
F O C U S A D J P O S I T I O N
- G - M G - V N o . 2
M G : [ 1 2 8 ]
A Q P : 1 2 8
D Q P : 1 2 8
SEL:
ADJ:
NEXT:
+ –
7
Adjust the focus and AQP/DQP for the upper part of the screen
(position No.2).
1
Press the
B
or
b
key so that the upper part of the screen is in focus.
2
Select AQP with the
v
or
V
key, and press the
B
or
b
key so that
the letters ME are clearly visible. (AQP adjustment)
3
Select DQP with the
v
or
V
key, and press the
B
or
b
key so that
the letters ME are clearly visible. (DQP adjustment)
4
Repeat steps
1
to
3
until the letters ME are in best focus.
Adjusting the Magnetic Focus
1
2
3
5
6
,
7
8
,
9
0
7
6
2
8
5
1
4
3
9
Adjustments
89
Adjustments
b
b
8
Perform the magnetic focus, AQP and DQP for every part of the screen
(positions No.3 to No.9) in numeric order.
1
Press the PO key to select the part to be adjusted.
2
Press the
v
or
V
key to select the adjustment item.
3
Press the
B
or
b
key to adjust.
Repeat steps
2
and
3
for each adjustment item.
Proceed to adjust the red magnetic focus
(page 90)
if the green
adjustments are completed.
If the green adjustments are not complete, repeat from the
green lens focus again.
AHP/DHP adjustment (in expert mode only)
To adjust the spot at the corner of the screen more precisely, the unit is
provided with the AHP (Axis Hexapole)/DHP (Diagonal Hexapole)
adjustment in expert mode only. The AHP/DHP adjustment corrects the
astigmatic distortion which cannot be corrected with the AQP/DQP
adjustment.
Perform the AHP/DHP adjustment before adjusting the magnetic focus and
AQP/DQP adjustment at the corners of the screen.
What is the AHP/DHP adjustment?
1
Press the NORMAL key on the remote commander to turn off the test
pattern.
2
Press the keys in the following order:
ENTER
n
ENTER
n
B
n
b
n
ENTER
Press the keys one after another within 2 seconds.
The following display appears.
D o y o u w i s h t o e n t e r
i n t o t h e E X P E R T
C O N T R O L M O D E ?
Y E S
N O
SEL:
SET:
ENTER
EXIT:
MENU
3
Press the
v
or
V
key to select YES, then press the ENTER key.
The unit enters the expert mode, and “E” appears at the top-left of the
screen when the menu is displayed.
4
Press the FUNCTION key once.
“Spot Shape” is displayed on the screen and the spots become large for
easier adjustment.
(continued)
DHP adjustment
AHP adjustment
Correct the triangular-form distortion.
Summary of Contents for VPH-G90E
Page 10: ......
Page 120: ......
Page 122: ...2 2 VPH G90E G90U G90M 2 1 3 Location 3 ME MB MC PB M L MA BA F BC NA BB ...
Page 190: ......
Page 204: ......
Page 210: ......
Page 224: ......
Page 337: ...9 1 9 1 VPH G90E G90U G90M SECTION 9 BLOCK DIAGRAMS ...
Page 363: ...2 3 4 5 A B C D E F G H 1 10 1 10 1 VPH G90J G90E G90U G90M SECTION 10 DIAGRAMS ...
Page 437: ...2 3 4 5 A B C D E F G H 1 10 75 10 75 VPH G90J G90E G90U G90M ...
Page 474: ...2 3 4 5 A B C D E F G H 1 10 112 10 112 VPH G90J G90E G90U G90M ...