Sanyo Xp 55 Manual

							-11-
1Remove 2 screws Ato take the Prism Base ass’y
upward off.
2Remove 2 screws Bto take the Lens Shift Motor and
Sensor SW Holder from the Base. Mechanical Disassemblies
1Remove 3 screws Ato take the Power Board off.
2Remove 4 screws Bto take Holder off from the cabinet
bottom.
Fig.8
Fig.7 Prism Base removal
7
Power Board removal8
Prism Base Ass’y
Motor and
Sensor Holder
B B A A
Power Board
Power Board
Holder B BA
A
B B A 
						

							1Remove 1 screw A to take Interlock Switch(SW902).
2Remove 2 screws B to take Filter Board Holder and
remove 2 screws 
Cto take Filter Board from the Holder.
3Remove 1 screw D to take Thermal Switch(SW905).
-12- Mechanical Disassemblies
Fig.9 Filter Board & Interlock SW & Thermal SW
removal
9
D
Interlock Switch
(SW902)
Filter Board
C
C
A BB
Holder
Thermal Switch
(SW905)
1Remove 4 screws Ato take Air-duct Top off.
2Remove 1 screw B(small) and 1 screw C(big) to take
Duct Cover-A.
3Remove 2 screws Dto take Fan (FN901) off.
4Remove 1 screw E(small) and 2 screws F(big) to take
Air-duct-A and Fan (FN902) off.
Fig.10 Fans (FN901, FN902) removal
10A
A AA
BC
D
D EF
F
F
Duct
Cover
-A
FN901
FN902
Air-duct-A
Air-duct
To p
Duct
Cover-B 
						

							-13-
■Optical Parts Disassemblies
Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassemblies”.
Disassembly requires a 2.0mm or 2.5mm hex wrench and a slot screwdriver.
1Remove each hex screw and pull the Polarized Glass-In ass’y upward.
2Remove a stopper and take the glass off upward.
Polarized Glass-In removal
Fig.2-1
Fig.2-2
Stopper
polarized glass
*Glass should be placed as the
printed marker comes to the
upper left corner.
Phase Sheet
Part No. is printed on
upper side.
Lens attachment
4.0mm hex wrench
Fig.1-2Fig.1-1
B
B
B
B
A
1Shift the Projection lens to the low end by the LENS SHIFT function.
2 Remove Cabinet Front-Top following to the chapter “Mechanical
Disassemblies”.
3Slide the lens lock lever Aon the projector to UNLOCK(UPPER) posi-
tion and remove the Projection Lens ass’y off.
Note : When making unlocking, attach your hand to prevent the lens fall.
4 Disconnect the connector and remove 4 screws B and take the
Projection lens from the lens attachment.
Projection Lens removal
Connector 
						

							-14-
1Remove 4 hex screws Aand take the LCD/Prism ass’y off upward.
2Remove 3 screws B and take the Glass Holder, and then pull the polarized
Glass-Out and the wide view glass upwards off. These glasses are mount-
ed for R, G and B LCD panels respectively.
Note:
To avoid the CG and focus alignments slipping off, please be careful to
handle the LCD/Prism assy. 
LCD Panel/Prism Ass’y
Note:
Do not replace the LCD panel
separately otherwise it can
not obtain proper picture.
Fig.4-1
Polarized Glass-Out and Wide view Glass removal
A A
A
Optical Pats Disassemblies
1Remove 2 hex screws Aand pull the Relay Lens ass’y upward.
2 Remove 2 screws Bto take the Lens off from the holder.
Note:
There is no mounting direction of the lens.
A
Fig.3-2Fig.3-1B B
Holder
Relay Lens
A
Relay Lens disassembly
*2 Glasses should be placed as the
sheet attached side comes to
the LCD panel side.
Fig.4-2 BB B
Pre-Polarized
Glass-Out (
*1)
Phase Sheet
Wide view Glass
Phase Sheet
Polarized Glass-
Out
*1 Pre-polarized Glass-
Out should be placed
into  the Green and
Blue LCD panels.
Phase Sheet (*1) 
						

							-15-
Optical Parts Disassemblies
1Remove 7 screws to take the Optical Unit Top off upward.
Optical Unit Top removal
1Remove 2 hex screws Aand take the Condenser Lens ass’y.
2Release 4 hooks B to  take the Lens off from the holder.
A
Fig.6-2
Fig.6-1B
Holder
Condenser Lens A
Condenser Lens disassembly
*Lens should be placed
as the flat surface side
comes to the holder
side.
Condenser Lens
Fig.5 
						

							-16-
Optical Parts Disassemblies
When the optical parts in the optical unit mounting or assembling,
the parts must be mounted in the specified location and direction as
shown in figure below.
14
12
8
Fig.7
3141
24
9
Locations and Directions
13
6
1Condenser lens (R)
2Condenser lens
3Condenser lens
4Mirror (B)
5Optical filter (UV cut)
6Dichroic mirror (B
7Dichroic mirror (G)
8Mirror (W)
9Condenser lens (IN)
10 PBS (prism beam splitter)
11 Integrator lens (OUT)
12 Integrator lens (IN)
13 Relay lens (IN)
14 Mirror (R)
Key No. Description
7
10
11
5
The printed marker
comes this side.
The cutting corner
comes to this side up.
Place the lens as the both
rugged surface sides in the
same direction.
The printed marker
comes this side. 
						

							-17-
■LCD Panel/Prism Ass’y Replacement
1Remove the cabinet top and main board following to
“Mechanical Disassemblies”.
2Remove 4 screws by using the 2.0 mm hex driver and
take the LCD Panel/Prism ass’y off upward from the
optical unit.
LCD Panel/Prism
Ass’y
After replacing or installing the LCD Panel/Prism assy,
please make sure to obtain the best focus in both TELE
and WIDE zoom. If the focus adjustment is required,
please adjust the positioning of LCD Panel/Prism Ass’y by
following the below procedure.
Mounting Procedure:
1 Loosen 4 screws Aon the LCD Panel/Prism assy with
2.0 mm hex driver.
2Turn the projector on and project the image with WIDE
zoom, and adjust the FOCUS control to obtain the best
focus.
3Turn the ZOOM control to the TELE position.
4Move the LCD Panel/Prism Ass’y backward or forward
(about 0mm ~ 0.8mm) to obtain the proper focus.
Confirm the focus at TELE and WIDE zoom.
5Tighten 4 screws Ato fix the LCD Panel/Prism assy.
Top ViewAA
AA
LCD Panel/Prism Ass’y
Note:
Do not replace the LCD
panel separately otherwise
it can not obtain proper pic-
ture.
IMPORTANT NOTICE on LCD Panel/Prism Assy Replacement
LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y.
These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced
whole of the LCD panels and prism ass’y at once. 
After replacing LCD Panel/Prism ass’y, please check the following adjustments.
- Check the “Condenser Lens Adjustment” and “Relay Lens Adjustment” following to chapter “Optical
Adjustment”.
- Check the “White Balance Adjustment” and “Common Centre Adjustment” following to chapter
“Electrical Adjustment”.
- Check the white uniformity on the screen. 
If you find the color shading, please adjust the white uniformity by using the proper computer and
“Color Shading Correction” software supplied separately. The software can be ordered as follows;
COLOR SHADING CORRECTION SOFTWARE
Service Parts No.
645 056 6288
LCD Panel/Prism Ass’y removal
Note on LCD Panel/Prism Ass’y Mounting 
						

							-18-
WARNING:
- For continued safety, replace with a lamp assembly of the same type. 
- Allow the projector to cool for at least 45 minutes before you open the
lamp cover. The inside of the projector can become very hot.
- Do not drop the lamp module or touch the glass bulb! The glass can
shatter and cause injury.
Pr
ocedure
1Turn off the projector and disconnect the AC cord. Allow the projector to
cool for at least 45 minutes.
2Loosen 2 screws with a screwdriver and open the lamp cover.
3Loosen 2 screws and pull out the lamp assembly by grasping the handle.
4Replace the lamp assembly securely and tighten 2 screws.
5Close the lamp cover and tighten 2 screws.
6Connect the AC cord to the projector and turn on.
Note:
- Do not reset the Lamp Replace Counter, except after lamp is replaced.
- The projector can not be turned-on with lamp cover removed, because
when the lamp cover is removed, the interlock switch is also released to
switch off the mains power for safety.
7Reset the Lamp Replace Counter, see below explanation.
■Lamp Replacement
1Turn the projector on, and press the MENUbutton
and the on-screen menu will appear. Press the POINT
LEFT/RIGHTbuttons to move a red frame pointer to
SETTING menu icon. 
2Press the POINT DOWNbutton to move a red frame
pointer to “Lamp counter reset” and then press the
SELECTbutton. The message “Lamp replace count-
er reset?” is displayed. Move the pointer to [Yes] and
the press the SELECTbutton.
3Another confirmation dialog box appears and select
[Yes] to reset Lamp Replace Counter .
Please refer to the owners manual for further informa-
tion.
Recommendation
Should the air filter become clogged with dust particles,
it will reduce the cooling fan’s effectiveness and may
result in internal heat build up and short lamp life. We
recommend cleaning the air filter after the projection
lamp is replaced.
Refer to “Air Filter Cleaning”. 
The LAMP REPLACEMENT indicator will illuminate
when the Lamp Replace Counter reaches 1500
hours. This is to indicate that lamp replacement is
required.
You can check the lamp replace counter  following to
below procedure.
1Press and hold the POWERbutton on the projector or
the remote control unit for more than 20 seconds.
2 The  Lamp replace Counter service menu appears
on the center of the screen briefly. Remark : 
The upper display Projector Counter is not reset by
resetting Lamp Replace Counter.
Lamp cover
Lamp replace counter data
ORDER REPLACEMENT LAMP
T
ype No.        Service Parts No.
POA-LMP67 610 306 5977
How to reset Lamp Replace Counter
How to check Lamp Replace Counter
Screws
HandleLamp Assembly 
						

							-19-
B-Polarized Glass
Mounting Assy
and Base
R-Polarized Glass
Mounting Assy
and Base
G-Polarized Glass
Mounting Assy
and Base
A
A
A
Fig.1-2
■Optical Adjustments
Main Board
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a 2.0mm hex wrench and a slot screwdriver. 
Note: Do not disconnect connectors K8L, K8X, K8D, K8G and K8E on the main board, because the projector can
not turn on due to operate the power failure protection.
Fig.1-1
Polarizedglass
mounting base
A
Polarizedglass
mounting assy
[Before Adjustment]
- Input a 100% of black raster signal.
[R/G/B-CONTRAST ADJUSTMENT]
1
Loosen a screw A(Fig.1-1/1-2) on the polarized glass mounting
base which you intend to adjust.
2Turn the polarized glass mounting assy and the polarized glass
mounting base at the same time as shown in Fig.1-1to obtain the
darkest brightness on the screen.
Note:  Both of them should be moved at the same time and in the
same direction.
3Tighten the screw Ato fix the polarized glass mounting base.
Repeat steps 1 to 3 for remaining polarized glasses.
Contrast adjustment 
						

							-20-
Optical Adjustments
Fig.2-2
1 Turn the projector on by a state of without FPC cables.
2 Adjust the adjustment base of condenser lens ass’y to make color
uniformity in white.
1) If the shading appears on the left or right of the screen as
shown in Fig.2-1, loosen 2 screws 
Awith the 2.0mm hex driv-
er, and adjust the slot 
Bto make color uniformity in green by
using a slot screwdriver.
2) If the shading appears on the top or bottom of the screen as
shown in Fig.2-2, loosen 1 screw 
Cwith the 2.0mm hex driver,
and adjust the slot 
Dto make color uniformity in green by using
a slot screwdriver
3 Tighten screws Aand Cto fix the Condenser lens unit.
Note:
The relay lens adjustment must be carried out after completing this
adjustment.
y
x
Moving of Slot D
Slot D
ab
a
b
Moving of slot B
Fig.2-1
Slot B
A
C
y
x
White
White
Condenser Lens adjustment
A