Panasonic PT-AE900U / PT-AE900E Service Manual ▷ View online
6.17. Replacement of Incidence
Polarizer
·
The procedure is described as an example of incidence
polarizer (G).
polarizer (G).
1. Remove the A-P.C.Board block according to the steps 1
through 3 in the section 6.3. "Removal of A-P.C.Board".
2. Mark positions of the incidence polarizer.
Note:
·
Mark accurately as possible because the marks will
be
be
used
for
resetting
the
incidence
polarizer
position.
3. Unscrew the 1 screw and remove the incidence polarizer.
4. Attach a new incidence polarizer and align it with the mark.
5. Tighten the 1 screw polarizer with care not to move the
incidence polarizer position.
6.18. Replacement of PBS Array
(Analysis Block)
1. Remove the A-P.C.Board block according to the steps 1
through 3 in the section 6.3. "Removal of A-P.C.Board".
2. Unscrew the 2 screws and remove the lamp unit terminal.
3. Unscrew
the
1
screw
and
remove
the
thermofuse
attachment.
4. Unscrew the 3 screws and remove the lamphouse.
5. Unscrew the 2 screws and remove the LCD block.
6. Unscrew the 2 screws.
7. Remove the analysis case (upper) while expanding the
hook of it outside.
Notes:
·
Because the hook is damaged easily, be careful not
to expand it excessively.
to expand it excessively.
·
The incidence polarizer (R, G and B) is installed in
the analysis case (upper). Handle it with care.
the analysis case (upper). Handle it with care.
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PT-AE900U / PT-AE900E
8. Remove the PBS array .
9. Install new PBS array.
Notes:
·
Be
careful
not
to
mistake
the
direction
(inside/outside, upper/lower).
·
Be careful not to touch the surface of PBS array.
6.19. Removal of Iris Unit
1. Remove the analysis block according to the steps 1 through
7 in the section 6.10. "Removal of Analysis Block ".
2. Unscrew the 2 screws.
3. Remove the analysis case (upper) while expanding the
hook of it outside.
Notes:
·
Because the hook is damaged easily, be careful not
to expand it excessively.
to expand it excessively.
·
The incidence polarizer (R, G and B) is installed in
the analysis case (upper). Handle it with care.
the analysis case (upper). Handle it with care.
4. Unscrew the 2 screws and remove the iris unit .
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PT-AE900U / PT-AE900E
7.2. Cautions for Adjustment
·
Never turn off the MAIN POWER switch until every fan
completely stops.
completely stops.
·
To maintain and ensure safety, always
use the
designated components for replacement parts.
·
If removing any clamps, lead wires or connectors,
always place them back in their proper locations.
always place them back in their proper locations.
·
Be careful not to damage the lead wires or components
when using a soldering iron or similar tool.
when using a soldering iron or similar tool.
7.3. Setting Before Adjustment
·
Set up the projector to obtain the projection distance below.
·
Turn the zoom ring of the projector to obtain the largest size
of the picture.
of the picture.
7.4. Convergence Adjustment
Execute this adjustment when replacing the LCD panel.
7.4.1. Tools to be used
Service Kit (Part No. TZSH07018): This kit is composed of 3
extension flexible cables and 3 connector extension cables.
Note:
·
Consult your dealer or Authorized Service Center for the
service kit.
service kit.
7.4.2. Preparation
1. Loosen 2 screws fixing the panel adjuster and 3 screws
fixing the panel attachment, then tighten the 5 screws
temporarily just until the LCD panel can be shifted by your
fingers.
temporarily just until the LCD panel can be shifted by your
fingers.
Note:
·
See figures in the section 6.13. "Replacement of
LCD Panel" for 2 screws fixing the panel adjuster
and 3 screws fixing the panel attachment.
LCD Panel" for 2 screws fixing the panel adjuster
and 3 screws fixing the panel attachment.
2. Reassemble
the
projector
in
the
reverse
order
of
disassembling, but leave the upper case and the screws
fixing the A-P.C.Board block as they are removed.
fixing the A-P.C.Board block as they are removed.
3. Connect the service kit (extension cables).
·
Each flexible cable of LCD Panels (R/G/B) - Connectors
(A1/A2/A3) on A-P.C.Board
(A1/A2/A3) on A-P.C.Board
·
Connector (K2) on K-P.C.Board - Connector (A9) on A-
P.C.Board
P.C.Board
·
Thermosensor (Intake air) connector - Connector (A7)
on A-P.C.Board
on A-P.C.Board
·
Intake fan connector - Connector (A15) on A-P.C.Board
4. Covering with an insulator (cloth or the like) to prevent a
short circuit, set the A-P.C.Board block on the main unit.
Note:
·
Handle with care not to apply external force to
connecting parts which connect the main unit and A-
P.C.Board.
connecting parts which connect the main unit and A-
P.C.Board.
7 Measurement and Adjustments
7.1. Adjustment Procedure Flowchart
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PT-AE900U / PT-AE900E
7.4.3. Adjustment Procedure
Prepare 2 pieces of thick black paper (23 mm × 100 mm) that
can be shaded.
can be shaded.
·
Cover and shade LCD panels with the paper except the
panel for adjustment.
panel for adjustment.
7.4.3.1. When replacing single LCD panel
(R, G or B)
·
The procedure is described as an example when LCD panel
(B) is replaced.
(B) is replaced.
1. Display the green crosshatch pattern and adjust the lens
focus.
2. Display green and blue crosshatch patterns.
3. Adjust focus by shifting the panel adjuster for LCD panel (B)
back and forth, then tighten the 2 screws.
4. Adjust the LCD panel (B) position so that the vertical center
of blue crosshatch pattern is overlapped with the vertical
center of green crosshatch pattern.
center of green crosshatch pattern.
5. Adjust the LCD panel (B) position so that the horizontal
center of blue crosshatch pattern is overlapped with the
horizontal center of green crosshatch pattern.
horizontal center of green crosshatch pattern.
6. Correct the tilt of the blue crosshatch pattern by adjusting
the LCD panel (B) position.
7. Display green, red and blue crosshatch patterns and
confirm the convergence. If it is necessary, fine adjust the
convergence so that the red and/or blue crosshatch pattern
is overlapped with green one.
convergence so that the red and/or blue crosshatch pattern
is overlapped with green one.
Repeat steps (1) to (3) until the green and blue crosshatch
patterns merge into a cyan pattern.
patterns merge into a cyan pattern.
8. After the adjustment, reassemble the projector according to
the section 6.13. "Replacement of LCD Panel".
7.5. Lighting Area Adjustment
7.5.1. Tools to be used
Service Kit (Part No. TZSH07018): This kit is composed of 3
extension flexible cables and 3 connector extension cables.
extension flexible cables and 3 connector extension cables.
Note:
·
Consult your dealer or Authorized Service Center for the
service kit.
service kit.
7.5.2. Preparation
1. Remove the upper case and the connector cover according
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PT-AE900U / PT-AE900E
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