Eiki LC-X71L User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
LC-X71 1 122 340 01 (KE6B)
LC-X71 1 122 341 01 (LE6B)
LC-X71L 1 122 340 21 (KE6BL)
LC-X71L 1 122 341 21 (LE6BL)
ORIGINAL VERSION
Chassis No. KE6-X7100
KE6-X71L00
REFERENCE NO. SM5110788-00
Model No. LC-X71
LC-X71L
(U.S.A., Canada, Europe)
Give complete “Chassis No.” for parts
order or servicing, it is shown on the
rating sheet on the cabinet on the pro-
jector.
FOREWORD
For your convenience, all service parts, identified in this manual are available through Eiki’s normal distribution chan-
nels.
In addition to service part number, the generic descriptions have been given, where possible, to allow your serv-
ice technicians to substitute equivalent components which might be available from other sources.
All orders for service parts will be honored. However, in instances where generic components are considered to
be available from several common sources, as would be the case with an industry standard fuse, resistor, or semi-
conductor, it may be more economical and expeditious to purchase the part locally.
LC-X71
LC-X71L (LENSLESS)

- 2 -
Contents
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Circuit Protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Mechanical Disassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Optical Parts Disassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
LCD Panel/Prism Ass’y Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Lamp Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Adjustments after Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Optical Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Electrical Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Service Adjustment Menu Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Circuit Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Test Points and Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Service Adjustment Data Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Chassis Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Chassis block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
LED indication and projector condition . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Power failure detection system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Power failure detection tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Diagnosis of power failure with RS-232C port . . . . . . . . . . . . . . . . . . . . .50
Error history log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Control Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Optical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Drawings & Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-A17
Parts description and reading in schematic diagram . . . . . . . . . . . . . . . . . . . . . A2
Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3-A10
Printed wiring board diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A11-A16
Pins description of ICs, transistors, diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . A17

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Safety Instructions
WARNING:
The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side of
the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is iden-
tified with the line ( ) in the schematic diagram. For continued product safety and protection of personnel
injury, servicing should be made with qualified personnel.
The following precautions must be observed.
SAFETY PRECAUTIONS
1: An isolation transformer should be connected in the
power line between the projector and the AC line
before any service is performed on the projector.
2: Comply with all caution and safety-related notes pro-
vided on the cabinet back, cabinet bottom, inside the
cabinet or on the chassis.
3: When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers
or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT
THE PROTECTIVE SHIELD IN POSITION AND
PROPERLY SECURED.
4: Before replacing the cabinet cover, thoroughly
inspect the inside of the cabinet to see that no stray
parts or tools have been left inside.
Before returning any projector to the customer, the
service personnel must be sure it is completely safe to
operate without danger of electric shock.
SERVICE PERSONNEL WARNING
Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always turn
off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.
Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer
generates high voltages (about 8kV) at its starts.
Since the lamp is very high temperature during units operation, replacement of the lamp should be done at least
45 minutes after the power has been turned off, to allow the lamp cool-off.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of the projector.
Components indicated by mark in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is, therefore, particularly recommended that the replacement of there parts
must be made by exactly the same parts.
DO NOT ATTEMPT TO SERVICING THE
REMOTE CONTROL UNIT.
Laser Beam may be leaked out when in disassemble
the Unit. As the Laser Beam used in this Remote con-
trol unit is harmful to the eyes.

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Specifications
Owner’s Manual (CD-ROM)
Quick Reference Guide
AC Power Cord
Wireless/Wired Remote Control Transmitter and Batteries
VGA Cable
USB Cable
Control Cable for Serial Port
Lens Cap (LC-X71)
Lens Attachment
Lens Replacement And Installation Manual
PIN Code Label
Multi-media Projector
Accessories
1.3” TFT Active Matrix type, 3 panels
19.8 lbs (9.0 kg) LC-X71, 18.0 lbs (8.2 kg) LC-X71L
12.6” x 6.6” x 16.8” (319 mm x 170.8 mm x 435.5 mm)
1024 x 768 dots
2,359,296 (1024 x 768 x 3 panels)
PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N
Up and Down
800 TV lines (HDTV)
INT. SP. Stereo (R and L), 3 watt RMS (T.H.D. 10%)
41 ˚F ~ 95 ˚F (5 ˚C ~ 35 ˚C)
14 ˚F ~ 140 ˚F (-10 ˚C ~ 60 ˚C)
Projector Type
Net Weight
Dimensions (W x H x D)
Panel Resolution
Number of Pixels
Color System
Scanning Frequency
Horizontal Resolution
Built-in Speakers
Operating Temperature
Storage Temperature
LCD Panel System
300 watt type
Projection Lamp
0˚ to 10.5˚
Feet Adjustment
Power Source : AA or LR6 ALKALINE Type x 2
Operating Range : 16.4’ (5 m)/±30˚
Dimensions : 2.0” x 1.4” x 7.6” (50 mm x 36 mm x 193 mm)
Net Weight : 0.35 lbs (160 g) (including batteries)
Laser Pointer : Class II Laser (Max. Output: 1mW/Wave length: 650±20nm)
Remote Control Transmitter
480i, 480p, 575i, 575p, 720p, 1035i, and 1080i
High Definition TV Signal
H-sync. 15 kHz ~ 100 kHz, V-sync. 48 ~ 100 Hz
Motorized Lens Shift
DVI Terminal (Digital) HDCP Compatible, HDB 15-pin Terminal (Analog)
and Stereo Mini Type Jack (Audio)
Input 1 Jacks
BNC Type x 5 (G or VIDEO/Y, B or Cb/Pb, R or Cr/Pr, H/V, and V),
Stereo Mini Type Jack (Audio)
Input 2 Jacks
RCA Type x 3 (VIDEO/Y, Cb/Pb and Cr/Pr), RCA Type x 2 (Audio R and L)
and DIN 4-pin (S-Video)
Input 3 Jacks
DIN 8-pin (Control port), USB port (Series B receptacle), Wired Remote Jack
and Pj-to NetDirector Connector
Other Jacks
Adjustable from 31” to 400”
Projection Image Size (Diagonal)
F1.8 ~ 2.1 lens with f=48.4 mm ~ 62.8 mm Motor zoom and focus (LC-X71)
Projection Lens
4.6’ (1.4 m) ~ 48.3’ (14.7 m)
Throw distance
AC 100 ~ 120 V (5.7 A Max. Ampere), 50/60 Hz (The U.S.A and Canada)
AC 200 ~ 240 V (2.7 A Max. Ampere), 50/60 Hz
(Continental Europe)
Voltage and Power
Consumption
●Specifications are subject to change without notice.
●LCD panels are manufactured to the highest possible standards. Even though 99.99% of the pixels are effective, a tiny fraction of the pixels (0.01% or
less) may be ineffective by the characteristics of the LCD panels.
●Each projector has its own characteristics.
When projecting with several projectors on the same screen or side by side, you may recognize different white balance and color uniformity on each
projector.

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●Interlock switch
The interlock switch (SW902) cuts off the AC mains power supply
when the lamp cover is removed. After opening the lamp cover for
replacing the lamp ass’y, place the lamp cover correctly otherwise
the projector can not turn on.
●Thermal switch
There is the thermal switch (SW905) inside of the projector to pre-
vent the internal temperature from rising abnormally. When the
internal temperature reaches near 90˚C, turn off the AC main
power supply automatically.
The thermal switch is not reset to normal automatically even if the
internal temperature becomes normal. Reset the thermal switch
following procedure.
Check the resistance between terminals of thermal switch by
using the tester. If it has high impedance, thermal switch may be
in operative.
How to reset the thermal switch
1. Loosen 2 screws and open the lamp cover.
2. Press the reset button on the thermal switch with a sharp-
pointed tool.
CAUTION:
Before press the reset button, disconnect the AC cord from the
projector.
Circuit Protections
This projector is equipped with the following circuit protections to operate in safety. If the abnormality occurs inside
the projector, it will automatically turn off by operating one of the following protection circuits.
●Fuse
The fuse is located inside of the projector. When either the LAMP
indicator or the READY indicator is not illuminated, fuse may be
opened. Check the fuse as following steps.
It should be used the specified fuse as follows;
How to replace the fuse
1. Remove the cabinet top following to “Mechanical
Disassemblies”.
2. Remove the fuse from fuse holder.
To install the fuse, take reversed step in the above.
Fuse Part No.: 423 025 1201
TYPE T8AH 250V FUSE
LITTEL FUSE INC. TYPE 215008
Interlock switch
Thermal switch
Lamp cover
Fuse Filter Board

- 6 -
Circuit Protections
●Warning temperature and power failure protection
The WARNING TEMP. indicator flashes red and the projector will automatically turn off when the internal tempera-
ture of the projector exceeds the normal temperature or when stopping cooling fans or when the internal power sup-
ply lines are failed.
Check the following possible causes and wait until stopping the TEMP WARNING indicator flashing.
Possible causes
- Air filter is clogged with dust particles. Remove dust from the air filter by following instructions in the “Air filter care
and cleaning” below.
- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are
not obstructed.
- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)
If the WARNING TEMP. indicator still continues to flash, there may be defects on cooling fans or power supply cir-
cuits. Please check fan operation and power supply lines referring to the “Power Supply Lines Chart”.
Air filter care and cleaning
The removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror.
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 reduce the life of the projector.
To clean up the air filters, follow the cleaning procedure
below:
1. Turn the power off, and disconnect the AC power cord
from the AC outlet.
2. Turn the projector up side down and remove the air filters
by pulling the latches of them upward.
3. Clean the air filters with brush or wash out the dust and
particles.
4. Replace each air filter properly. Make sure that the air fil-
ters are fully inserted.
CAUTION:
Do not operate the projector with the air filter removed. The
dust is stuck on the LCD panel and the mirror, and it may
spoil the fine picture image.
Do not put the small parts into the air intake vents. It may
result in the malfunction of the projector. The air filter is
small parts. Take care that children don’t eat or swallow it.
RECOMMENDATION
We recommend to avoid dusty, smoky place for operating the projector. Using in dusty place may cause the picture
of poor quality.
When using under the dusty or smoky conditions, dust may accumulate on the LCD panel and lens inside it, and
may resultantly be projected on the screen together with the picture.
When the above symptoms are noticed, please clean up the LCD panel and lens following to the “Cleaning Method”.
Air filters

- 7 -
1Remove 5 screws A, 2 screws B, and loosen 2 screws
C, and then take the Cabinet Top upward off.
Note: If you want to remove the Cabinet Front-Top only,
you do not need to remove screws A.Remove 2 screws
B.
Mechanical Disassemblies
Mechanical disassemble should be made following procedures in numerical order.
Following steps show the basic procedures, therefore unnecessary step may be ignored.
Caution:
The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of
performance and product safety.
Fig.1
1Remove the Cabinet Front-Top, Lens Cover Holder and
Lens Cover upward off.
2Remove 2 screws Dto take the Cabinet Front off.
3Remove Terminal Boards, SW Board, RC Front Board,
and speakers on the Cabinet Front.
Fig.2--1
Cabinet Top removal
1
Cabinet Front removal
2
C
B
A
A
A
A
B
A
D
D
Cabinet Front-Top
Lens Cover Holder
Cabinet Front
Lens Cover
C
Fig.2-2
SW
Board
Speaker
RC
Front
Board
Ter m inal
Board

- 8 -
Mechanical Disassemblies
1Remove 6 screws to take the Main Board upward.
Fig.3
Fig.4
1Remove 1 screw A and take the Rear Panel ass’y
upward off.
2Remove 4 screws Bto take the fan (FN905) off.
3Remove 5 screws Cand 1 screw Dto take AV Board
from the Rear Panel ass’y off.
4Remove 2 screws Eand grounding leads and then pull
up the I/F Board and Holder assy from the bottom cabi-
net.
5Remove 4 screws Fto take the I/F Board.
Main Board removal
3
AV, I/F Board & Rear Panel removal
4
Main Board
A
B
B
B
B
C
D
Rear Panel Ass’y
FN905
AV Board
I/F Board
F
F
F
FEE

- 9 -
Mechanical Disassemblies
1Remove 4 screws Ato take the Ballast Cover upward
off.
2Remove 3 screws Bto take the Fan (FN904) and the
Fan mounting base off.
3Remove 2 screws Cto take the Fan (FN904) off from
the Fan mounting base.
4Remove the Sub Power Board and Drive Board by
pulling them upward.
Fig.5
Lamp Ballast Unit removal
5
A
Ballast Board
FN904
Sub Power
Board
Drive Board
A
A
A
CC
Ballast Cover
1Remove 1 screw Aand then remove the holder.
2Remove 2 screws Band 4 screws C(small) and pull the
Optical Unit upward off.
3Remove 4 screws Dto take the Fan (FN906) off.
4Remove 1 screws Eto take the Fan (FN903) off and 2
screws Fto take the air duct off.
5Remove 3 screws Gto take the Fan (FN907) off.
Fig.6
Optical Unit removal
6
FN906
FN903
Optical Unit
B
B
CC
CC
D
D
D
E
F
F
A
FN907
G
G
G
B
B
B

- 10 -
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 removal
8
Prism Base Ass’y
Motor and
Sensor Holder
B
B
A
A
Power Board
Power Board
Holder
B
B
A
A
B
B
A

- 11 -
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).
Mechanical Disassemblies
Fig.9
Filter Board & Interlock SW & Thermal SW
removal
9
D
Interlock Switch
(SW902)
Filter Board
C
C
A
B
B
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.
5Remove 2 screws Gto take R-net Board off.
Fig.10
Fans (FN901, FN902) removal
10 A
A
AA
BC
D
D
EF
F
FDuct
Cover
-A
FN901
FN902
Air-duct-A
Air-duct
Top
Duct
Cover-B
R-net Board
G
G

- 12 -
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.
Lens attachment
2.5mm 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
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.2-2
Fig.2-1
B
B
Holder
Relay Lens
A
Relay Lens disassembly

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Optical Pats Disassemblies
1Remove each hex screw Aand pull the Polarized Glass-In ass’y upward.
2Remove each hex screw Band pull the Optical Filter (HCP) ass'y upward.
3Remove the stoppers and take the polarized glasses and optical filters off
upward.
Polarized Glass-In removal
Fig.3-1
Polarized glass
Optical filter (HCP)
There are 2 types combination of the polarized
glass and the optical filter linked with the LCD/
Panel Prism Ass'y.
Type-L (LCD/Panel Prism Ass'y)
R: Black or green marking and 1 gap
G: Red marking and 2 gaps
B: Black or green marking and 1 gap
Type-R (LCD/Panel Prism Ass'y)
R: Red or blue marking and 2 gaps
G: Black marking and 1 gap
B: Red or blue marking and 2 gaps
* See Fig.3-2 for the mounting direction of the
parts.
A
B
Optical filter (HCP)
Film sheet(*1) Marking(*2)
Gap(*2)
*1 The Polarized
Glass-In should be
placed as the film
sheet comes to
LCD panel side.
Fig.3-2
Stopper
Stopper
*2 The Optical Filter (HCP) should be placed
as the colored marking comes to upper
side and the gap comes to the Polarized
Glass-In.

- 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 han-
dle the LCD/Prism ass'y.
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
BB
BPolarized Glass-Out
* The polarized glass-out for green panel have
2 green marking on top of the glass, and
should be placed as in Fig.4-2.
Pre-polarized Glass-Out
* The pre-polarized glass-out should be placed
for green and blue panels, not for red panel.
* The pre-polarized glass-out have 1 marking
on top of the glass, and should be placed as
in Fig.4-2.
Marking(*)
Fig.4-2
Polarized Glass-
Out
Pre-Polarized
Glass-Out (*1)
* Glasses should be placed as the
sheet attached side comes to the
LCD panel side.
Optical Pats Disassemblies

- 15 -
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.6-1
B
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
Optical Pats Disassemblies

- 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.
13
11
7
Fig.7
3
13 1
24
8
Locations and Directions
12
5
1Condenser lens (R)
2Condenser lens
3Condenser lens
4Mirror (B)
5Dichroic mirror (B
6Dichroic mirror (G)
7Mirror (W)
8Condenser lens (IN)
9PBS (prism beam splitter)
10 Integrator lens (OUT)
11 Integrator lens (IN)
12 Relay lens (IN)
13 Mirror (R)
Key No. Description
6
9
10
The printed marker
comes this side.
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 ass'y,
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 ass'y 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 ass'y.
Top ViewA
A
A
A
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 Ass'y 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.
LCD Panel/Prism Ass’y removal
Note on LCD Panel/Prism Ass’y Mounting

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R
R
L
L
LCD Panel/Prism Ass'y Type-R LCD Panel/Prism Ass'y Type-L
NOTE:
LCD panel/prism assembly should be used with the same type of the optical unit.
Confirm that both marking "R" is matched. Confirm that both marking "L" is matched.
There are 2 types combination of the LCD panel/prism
assembly and the optical unit, named Type-R and Type-L.
Since both have no compatibility, each type should be com-
bined with the same type, and the specific parts should be
used. If not, the poor optical characteristics may degrade
the quality of a projected image.
Confirm the "R" label or "L" label on top of the LCD panel/
prism assembly and the optical unit.
Note on LCD Panel/Prism Ass’y
LCD Panel/Prism Ass'y Replacement

The LAMP REPLACE indicator will light when the total
lamp used time (corresponding value) reaches 2,500
hours. This is to indicate that lamp replacement is
required. The total lamp used time is calculated by
using the below expression;
Total lamp used time =Teco +Tnormal x (1.666)
Teco:used time in Eco mode
Tnormal:used time in Normal and Auto mode
You can check the lamp counter following procedure.
1Press and hold the POWER ON-OFF button on the
projector or the remote control unit for more than 20
seconds.
2The projector used time and lamp used time will be
displayed on the screen briefly.
You can also check "Lamp Counter" in "Setting Menu".
This value is actual lamp used time.
"Lamp Time" = Teco +Tnormal
Counter
Projector 475H
Lamp
Normal 100H
Eco 375H
Corresponding value 542H
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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.
Procedure
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
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 clean-
ing the air filter after the projection
lamp is replaced.
Refer to “Air Filter Cleaning”.
Lamp cover
ORDER REPLACEMENT LAMP
T
ype No.Service Parts No.
POA-LMP101 610 328 7362
Screws
Handle
Lamp Assembly
1Turn the projector on, and press the MENU button to display the On-
Screen Menu. Press the POINT LEFT/RIGHT buttons to move a red
frame pointer to SETTING menu icon.
2Press the POINT DOWN button to move the red frame pointer to “Lamp
counter” and then press the SELECT button. The next box appears.
3Press the POINT UP/DOWN buttons to select Reset and then press the
SELECT button. The "Lamp replacement counter reset?" appears. Move
the pointer to [Yes] and the press the SELECT button.
4Another confirmation dialog box appears and select [Yes] to reset Lamp
Replace Counter .
How to reset Lamp Replace Counter
Please refer to the owners manual for further information.
How to check lamp used time
Total lamp used time (corresponding value)
Setting Menu
Lamp Counter Display Projector used time
Total lamp used time (actual)

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● :Adjustment necessary ❍ :Check necessary
Adjustments after Parts Replacement
Condenser lens adjustment ❍●
Relay lens adjustment ❍●
Contrast Adjustment
R-Contrast adjustment ●
G-Contrast adjustment ●
B-Contrast adjustment ●
Output voltage adjustment ●
+16V adjustment ❍
Fan output voltage adjustment ●●
Video center adjustment ●
PSIG adjustment ●
PC black level adjustment ●
PC input adjustment ●
AV input adjustment ●
Common center adjustment ●●
PC gamma-shift adjustment ●
PC white balance adjustment ❍●
AV gamma-shift adjustment ●
AV white balance adjustment ❍●
Color shading correction ❍❍
Disassembly / Replaced Parts
Condenser
Lens
Polarized glass
RGB
Optical Adjustments
Electrical Adjustments
Sub
Power
Board
Main
Board
Relay
Lens
Power
Board
LCD/
Prism
Ass’y