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Model
XG-XV2E (serv.man2)
Pages
47
Size
659.12 KB
Type
PDF
Document
Service Manual
Brand
Device
Projector / Service manual part one
File
xg-xv2e-sm2.pdf
Date

Sharp XG-XV2E (serv.man2) Service Manual ▷ View online

17
XG-XV2E/M/A
CONVERGENCE AND FOCUS ADJUSTMENT
»
Start the convergence and focus adjustments with the top cabinet and the signal
shield removed but the power on. Use the remote control to adjust the image. Take the
following procedures.
1. Focusing the projection lens
(A) Replacing all the 3 LCD panels
1. Before replacing all the 3 LCD panels, project an image on the screen and bring it into focus.
2. Replace the panels with new ones.  But until the focus has been completely readjusted, be careful not to
change the distance between the set and the screen, nor to move the projection lens focus and zoom
rings.
If the focus is readjusted with a different positional relation, the relation between the projection distance
and the screen size is affected. In other words, a short-distance image (40 WIDE, for example) may
get out of the focus range, or a long-distance image (300 WIDE, for example) may come out of focus.
(B) Replacing 1 or 2 of the 3 LCD panels
1. In adjusting the focus after replacement of one or two LCD panels, project an image on the screen and
turn the projection lens focus ring to get the non-replaced LCD panel into focus.
2. But until the focus has been completely adjusted for the new LCD panels, be careful not to change the
distance between the set and the screen, nor to move the projection lens focus and zoom rings.
(If the distance has been changed or the projection lens readjusted, repeat the above steps 1 and 2.)
2. Adjusting the G-LCD panel
(A) Focus adjustment. (Make this adjustment on the white-only screen.)
1. Right-and-left focus adjustment (
θ
Y direction) .
Loosen the lock screws "b" and "c" and insert the eccentric screwdriver into the notch and hole "b" or "c".
Turn the screwdriver until the right and left halves on the screen get into focus.
First get the right and left halves in balance.  Then improve the accuracy while making the adjustment
2 below.
2. Top-center-bottom focus adjustment (
θ
X and Z directions).
Loosen the lock screws "a" and "c" and insert the eccentric screwdriver into the notch and hole "a" and
"c". Turn the screwdriver until the top, center and bottom on the screen get into focus.  In adjusting this
top-to-bottom focus, temporarily tighten the lock screw "b" to fix the 
θ
Y direction adjustment.
3. Repeat the above steps 1 and 2 to finely adjust the focus.  Finally tighten up all the lock screws.
Notes :
1
Carefully proceed with the focus adjustment because the adjusting directions are correlated.
2
In adjusting the convergence and focus, do not move the projection lens zoom and focus rings until the
end of all the adjustments.
(B) Convergence adjustment
»
The G-LCD panel has no convergence adjustment mechanism. Use this panel as convergence adjustment
reference.
3. B-LCD panel adjustment (the same for the R-LCD panel)
(A) Focus adjustment
»
Take the same procedure as for the G-LCD panel focus adjustment. Note that the adjustment range is
small in the Z direction. If the convergence is quite different between the B-LCD and G-LCD panels,
roughly adjust the convergence first and then the focus.
(B) Convergence adjustment
»
Use a crosshatch pattern signal for this adjustment.
Make the adjustment just for the G-colour and the relevant colour.
(1) Loosen the convergence lock screw "d".
(2) With the G-LCD panel’s screen center as reference, adjust the B-LCD panel in the X, Y and 
θ
Z directions.
(3) Finally tighten up the convergence lock screw "d".
)
(
)
(
18
XG-XV2E/M/A
Convergence and Focus Adjustments Mechanism
Notes :
1
The eccentric cam is used for convergence adjustment. This means that the cam’s turning and the linear
movement are not always uniform.
2
This model is not equipped with the LCD image adjustment mechanism. This is because the dichroic
prism is used for image formation. When the LCD panels all get into the best focus, the images are
almost completely converged.
X
Z
θ
Y
G-LCD
X
Z
θ
Y
Notch and hole "c"
Notches and holes "b"
Notch and hole "c"
Lock screws "c"
Lock screws "b"
Lock screws "a"
TOP VIEW
SIDE VIEW
FRONT
R-LCD
B-LCD
G-LCD panel
mounting screws
 G adjusting plate
G-LCD
X
Y
θ
Z
Eccentric cam
(X direction adjustment)
Eccentric cam
(Y direction adjustment)
Eccentric cam
(
θ
Z direction adjustment)
Lock screws "d"
(convergence adjustment)
R•B adjusting plate
R•B-LCD
R•B-LCD panel
mounting screws
SIDE VIEW
Notch and
hole "a"
19
XG-XV2E/M/A
X direction
LCD right and left
Convergence Y direction
LCD top and bottom
θ
Z direction
Rotation around Z axis
LCD turning axis
Z direction
LCD optical axis
Focus
θ
X direction
Rotation around X axis
LCD top-to-bottom flapping
θ
Y direction
Rotation around Y axis
LCD right-to-left flapping
Tool
Specific or General
Tool code
Configuration
Eccentric cam
Specific
9DASPN-XGNV1U
adjusting wrench
Eccentric screwdriver Specific
9EQDRiVER-NV1A
Hex wrench
General (redesigned)
9EQLNC-XGNV1U
Phillips screwdriver
General
           —
For M2.6 pan-head machine screw
2
5
16
R2
50
CUT
100
80
Focus Adjustments the Other Way
a
Notch and hole "a"
Z and 
θ
X directions
b
Notch and hole "b"
θ
Y direction
c
Notch and hole "c"
Z, 
θ
X and 
θ
Y directions
Convergence and Focus Adjusting and Tightening Tools
X direction
±
1mm
Eccentric cam
Eccentric cam adjusting wrench
d
Hex wrench
Convergence
Y direction
±
1mm
Eccentric cam
Eccentric cam adjusting wrench
d
Hex wrench
R/B
θ
Z direction
±
2
°
Eccentric cam
Eccentric cam adjusting wrench
d
Hex wrench
colours
Z direction
±
1.65mm Notch and hole "a" & "c"
Eccentric screwdriver,
a, c
Phillips
Focus
θ
X direction
±
2
°
Notch and hole "a" & "c"
a, c
 screwdriver
θ
Y direction
±
2
°
Notch and hole "b" & "c"
b, c
Z direction
±
0.5mm
G colour
Focus
θ
X direction
±
2
°
Same as for R and B colours
θ
Y direction
±
2
°
Colour
Adjustment
Direction
Movement
Position
Adjusting tool
Lock screw
Tightening tool
Convergence and Focus Adjustments at a Glance
Adjustment directions
Lock screw
Position
Related direction
Adjustment
Direction
Definition
Direction of LCD panel
Convergence and Focus Adjustment for the Optical Mechanism
20
XG-XV2E/M/A
Replacing the LCDs
With the top cabinet removed
(1) Remove three screws off the output shield.
(2) Disconnect the LCD flat cable from the output PWB connector.
(3) Remove the lock screws "b" and "c". Detach the R/B adjusting plate or the G adjusting plate together with the
LCD panel.
(4) Separate the LCD panel from the adjusting plate.
(5) Mount a new LCD panel in the reverse order of the above steps (1), (2), (3) and (4).
~
Readjust the convergence and focus. Note that the G LCD panel needs no convergence adjustment and has
a small adjustment range in the Z direction.
X
Z
θ
Y
TOP VIEW
X
Z
θ
Y
Lock screws "c"
Lock screws "c"
Lock 
screws "c"
Lock 
screws "b"
FRONT
R-LCD
B-LCD
G-LCD
2
2
3
3
3
3
1
1
2
SIDE VIEW
SIDE VIEW
X
Y
θ
Z
R•B adjusting plate
R•B-LCD
R•B-LCD panel
mounting screws
4
G-LCD panel
mounting screws
4
 G adjusting plate
G-LCD
1
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