Eiki LC-WB42N User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
LC-WB42N
1 122 457 01 (KY7BC)
1 122 458 01 (LY7BC)
1 122 458 06 (LY7GC)
Original Version
Chassis No. KY7-WB42N00
REFERENCE NO. SM5111065-00
FILE NO.
Model No. LC-WB42N
U.S.A, Canada,
Europe, Hong Kong
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
service 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 semicon-
ductor, it may be more economical and expeditious to purchase the part locally.
Give complete“ Chassis No.” for parts
order or servicing, it is shown on the
rating sheet on the cabinet on the projector.

-2-
Contents
SERVICE MANUAL.......................................................1
Contents........................................................................2
Safety Instructions.........................................................3
Safety Precautions......................................................3
Product Safety Notice.................................................3
Service Personnel Warning ........................................3
Specifications ................................................................4
Circuit Protections .........................................................5
Thermal switch ...........................................................5
Lamp cover switch......................................................5
Fuse............................................................................5
Warning temperature and power failure protection.....6
Maintenance..................................................................7
Cleaning the Filter ......................................................7
Resetting the Filter Counter........................................7
Lamp Replacement ....................................................8
Resetting the Lamp Counter.......................................9
How to check Lamp Used Time..................................9
Cleaning ...................................................................10
Security Function Notice..............................................11
Security Function Disable.........................................11
Network security Function Disable..........................11
Mechanical Disassembly.............................................12
Optical Parts Disassembly...........................................16
Adjustments.................................................................22
Adjustments after Parts Replacement......................22
Optical Adjustments.....................................................23
Contrast adjustment..................................................23
Integrator lens adjustment........................................24
Relay lens-Out adjustment .......................................25
Electrical Adjustments.................................................26
Service Adjustment Menu Operation........................26
Memory IC (IC1391) Replacement...........................26
Circuit Adjustments...................................................27
Test Points and Locations.........................................32
Service Adjustment Data Table.................................33
Chassis Block Diagrams..............................................52
Chassis over view.....................................................52
System control..........................................................53
Lamp control.............................................................54
Audio circuit..............................................................55
Power supply & protection circuit..............................56
Fan control circuit .....................................................57
IIC bus control circuit................................................58
Network (MCI) circuit................................................59
Troubleshooting...........................................................60
Indicators and Projector Condition ...........................60
No Power..................................................................61
No Picture.................................................................62
No Sound..................................................................63
Control Port Functions.................................................64
Scaler I/O Port Functions (PW392) ..........................64
I/O Expander Port Functions (TE7783) ...................65
Waveform ....................................................................66
IC Block Diagrams.......................................................67
Electrical Parts List......................................................74
Electrical Parts Location...........................................75
Electrical Parts List...................................................76
Mechanical Parts List ................................................107
Cabinet Parts Location...........................................107
Optical Parts Location ............................................108
Mechanical Parts List .............................................112
Diagrams & Drawings..................................................A1
Parts description and reading in schematic diagram...A2
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams.................................A11
Pin description of diode, transistor and IC.................A17
Note on Soldering......................................................A18

-3-
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 identified with the line ( ) in the schematic diagram. For continued product safety and protection of per-
sonnel 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 projec-
tor.
2: Comply with all caution and safety-related notes
provided 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, adjust-
ment covers or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT T
HE PROTECTIVE SHIELD IN POSITION AND PROP
ERLY 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 (15kV - 25kV) 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 SERVICINGTHE REMOTE CONTROL UNIT.
Laser Beam may be leaked out when in disassemble the Unit. As the Laser Beam
used in this Remote control unit is harmful to the eyes.
If the Remote Control unit is failed, please replace it with a new one.

-4-
Specifications
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
Mechanical Information
Projector Type Multi-media Projector
Dimensions (W x H x D) 13.16" x 3.09" x 10.14" (334.2 x 78.4 x 257.5mm) (Not including protrusions)
Net Weight 7.94 lbs (3.6 kg)
Feet Adjustment 0˚ to 8.9˚
Panel Resolution
LCD Panel System 0.74" TFT Active Matrix type, 3 panels
Panel Resolution 1,280 x 800 dots
Number of Pixels 3,072,000 (1,280 x 800 x 3 panels)
Signal Compatibility
Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N
High Definition TV Signal 480i, 480p, 575i, 575p, 720p, 1035i, and 1080i
Scanning Frequency H-sync. 15 kHz–100 kHz, V-sync. 50–100 Hz
Optical Information
Projection Image Size (Diagonal) Adjustable from 40” to 300”
Throw Distance 3.3' (1.0m) - 39.7' (12.1m)
Projection Lens F1.7–2.5 lens with f=19.2 mm–30.2 mm with manual zoom and focus
Projection Lamp 275 W
Interface
Video Input Jack RCA Type x 1
S-video Input Jack Mini DIN 4 pin x 1
Audio Input Jacks RCA Type x 2
Computer 1 /Computer2 Audio Input Jacks Mini Jack x 2
Computer In 1/ Component Input Terminal Mini D-sub 15 pin x 1
Computer In 2/MONITOR OUT Terminal Mini D-sub 15 pin x 1
Control port D-sub 9 pin x 1
USB Connectors USB connector (Series A x1, Series B x 1)
Audio Output Jack Mini Jack (stereo) x 1 (variable)
LAN Connection Terminal 100 Base-TX (100Mbps)/10 Base-T (10Mbps), RJ45
HDMI x 1
Audio
Internal Audio Amp 1.0 W RMS
Built-in Speaker 1 speaker, ø1.10" (28 mm)
Power
Voltage and Power Consumption AC 100–120 V (4.0A Max. Ampere), 50/60 Hz (The U.S.A and Canada)
AC 200–240 V (2.0A Max. Ampere), 50/60 Hz (Continental Europe and The U.K.)
Operating Environment
Operating Temperature 41˚F–95˚F (5 ˚C–35 ˚C)
Storage Temperature 14˚F–140˚F (-10˚C–60 ˚C)
Remote Control
Battery AAA or LR03 Type x 2
Operating Range 5 m/±30˚
Dimensions 45 mm (W) x 23 mm (H) x 145 mm (D)
Net Weight 3.5 oz 99 g (including batteries)
Laser Pointer Class II Laser (Max. Output: 1 mW/Wave length: 640–660 nm)
●The 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.

-5-
Fuse
A fuse is located inside of the projector. When the POWER indica-
tor is not lightning, the fuse may be opened. Check the fuse as
following steps.
The fuse should be used with the following type;
Fuse Part No.: 323 025 1204
TYPE 8A 250V FUSE
LITTLE FUSE INC. TYPE 21500.8
How to replace the fuse
1. The fuse is placed on the filter board under the main board. Re-
move the cabinet top and main board.
2. Take the fuse off, and replace the new one with the specified type.
Lamp cover switch
The lamp cover switch (SW901) cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed completely.
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 (SW902) inside of the projector to de-
tect the internal temperature rising abnormally. When the internal
temperature reaches near 100˚C, the thermal switch opens to stop
the operation of the power supply circuit.
The thermal switch cannot be reset itself automatically even if the
internal temperature becomes normal. Reset the thermal switch
following to the below procedure.
How to reset the thermal switch
1. Insert the sharp tool like a screwdriver into a hole on the cabinet
from the cabinet bottom.
2. Press the reset button on the thermal switch with the screw-
driver.
CAUTION:
Before press the reset button, make sure that the AC cord must be
disconnected from the AC outlet.
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
Thermal switch (SW902)
Fuse
Circuit Protections
Lamp cover switch
(SW901)

-6-
Circuit Protections
The projector will be automatically turned off when the internal temperature of the projector is abnormally high, or
the cooling fans stop spinning, or the power supplies in the projector are failed.
- If the WARNING indicator is flashing, it may detect the abnormal temperature inside the projector. Check the follow-
ing possible causes and wait until the WARNING indicator stops flashing, and then try to turn on the projector.
- If the WARNING indicator lights red, it may defect the cooling fans or power supply circuits. Check fans operation
and power supply lines referring to the chapter “Power supply & protection circuit” in the Chassis Block Diagram
section.
Possible causes
- Air filters are clogged with dust particles. Remove dust from the air filters 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)
The projector is shut down and the WARNING
indicator lights red.
When the projector detects an abnormal condition, it is auto-
matically shut down to protect the inside of the projector and
the WARNING indicator lights red. In this case, unplug the
AC power cord and reconnect it, and then turn the projector
on once again to verify operation. If the projector cannot be
turned on and the WARNING indicator still lights red, it may
defect the cooling fans or power supply circuits.
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE AC
POWER CORD CONNECTED UNDER AN ABNOR-
MAL CONDITION. IT MAY RESULT IN FIRE OR
ELECTRIC SHOCK.
Top Control
WARNING
lights red
Warning temperature and power failure protection

-7-
Resetting the Filter Counter
Cleaning the Filter
Maintenance
Filter prevents dust from accumulating on the optical elements inside the projector. Should the filters become
clogged with dust particles, it will reduce cooling fans’ effectiveness and may result in internal heat buildup
and adversely affect the life of the projector. If a Filter warning icon appears on the screen, clean the filters
immediately. Clean the filters by following the steps below.
CAUTION
Do not operate the projector with the filters
removed. Dust may accumulate on the optical
elements degrading picture quality.
Do not put anything into the air vents. Doing so
may result in malfunction of the projector.
RECOMMENDATION
We recommend avoiding dusty/smoky environments
when you operate the projector. Usage in these
environments may cause poor image quality.
When using the projector under dusty or smoky
conditions, dust may accumulate on a lens, LCD panels, or
optical elements inside the projector degrading the quality
of a projected image. When the symptoms above are
noticed, contact your authorized dealer or service station
for proper cleaning.
Turn off the projector, and unplug the AC power cord
from the AC outlet.
Turn the projector over and remove the filters by
pulling the latches upward.
1
2
Gently clean the filters by using a brush or rinse it
softly.
3
When rinsing the filters, dry they well. Replace the
filters properly. Make sure that the filters are fully
inserted to the projector.
4
Filters
Pull up and remove.
Be sure to reset the Filter counter after cleaning or replacing
the filters.
Press the MENU button to display the On-Screen
Menu. Use the Point buttons to select Setting and
then press the Point or the SELECT button.
Use the Point buttons to select Filter counter and
then press the SELECT button. Use the Point buttons
to select Filter counter reset and then press the
SELECT button. Filter counter Reset? appears. Select
Yes to continue.
1
2
Filter counter
Filter counter Reset?
appears.
Select Yes, then
another confirmation
box appears.
Select Yes again
to reset the Filter
counter.
Another confirmation dialog box appears, select Yes to
reset the Filter counter.
3
H

-8-
When the projection lamp of the projector reaches its end of life,
the Lamp replacement icon appears on the screen and LAMP
REPLACE indicator lights yellow. Replace the lamp with a new
one promptly. The timing when the LAMP REPLACE indicator
should light is depending on the lamp mode.
Follow these steps to replace the lamp.
For continued safety, replace with a lamp of the
same type. Do not drop a lamp or touch a glass
bulb! The glass can shatter and may cause injury.
Allow a projector to cool for at least 45 minutes
before you open the Lamp cover. The inside of the
projector can become very hot.
CAUTION
Turn off the projector and unplug the AC power cord. Let
the projector cool for at least 45 minutes.
Loosen the two (2) screws that secure the lamp. Lift the
lamp out of the projector by using the handle.
1
3
Replace the lamp with a new one and secure the two
(2) screws. Make sure that the lamp is set properly.
Close the lamp cover.
4
Remove the one (1) screw on the lamp cover and open
the lamp cover.
2
Connect the AC power cord to the projector and turn on
the projector.
6Reset the lamp counter.
See “Resetting the Lamp Counter” on the next page.
5
Lamp Replacement
CAUTION
WARNING:
TURN OFF THE UV LAMP BEFORE OPEN-
ING THE LAMP COVER
Top Control
LAMP REPLACE
indicator
Lamp replacement icon
✔Note:
• The Lamp replacement icon will not appear when
the Display function is set to “Off”, during“ Freeze”,
or“ No show”.
ORDER REPLACEMENT LAMP
Type No. POA-LMP111
Service Parts No. 610 333 9740
Maintenance
Handle
Screw
Lamp Cover
Press here and pull upward.
Screw
Lamp
Screw

-9-
The LAMP REPLACE indicator will light yellow when the total lamp used time (Corresponding value) reaches 3,000
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 (Corresponding value) = Teco + (Tnormal x 1.2) + (Thigh x 1.5)
Teco: used time in the Eco mode
Tnormal : used time in the Normal mode
Thigh : used time in the High and Auto mode
You can check the lamp used time following to the below procedure.
1Press and hold the ON/STAND-BY button on the projector for more than 20 seconds.
2The projector used time and lamp used time will be displayed on the screen briefly as follows.
Counter
Projector 750 H
Lamp
High 200 H
Normal 250 H
Eco 300 H
Corresponding value 900 H
Total lamp used time
Projector used time
How to check Lamp Used Time
Be sure to reset the Lamp counter after the lamp is replaced. When the Lamp counter is reset, the LAMP RE-
PLACE indicator stops lighting and the Lamp replacement icon disappears.
Press the MENU button to display the On-Screen
Menu. Use the Point ed buttons to select Setting
and then press the Point 8or the SELECT button.
Use the Point ed buttons to select Lamp coun-
ter and then press the SELECT button. Use the
Point ed buttons to select Lamp counter reset
and then press SELECT button. Lamp counter Re-
set? appears. Select Yes to continue.
1
2
Another confirmation dialog box appears, select
Yes to reset the Lamp counter.
3
Resetting the Lamp Counter
✔Note:
• Do not reset the Lamp counter without implementing
lamp replacement. Be sure to reset the Lamp counter
only after replacing the lamp.
Lamp counter
Maintenance
Lamp counter Reset?
appears.
Select Yes, then another
confirmation box appears.
Select Yes again to reset
the Filter counter.

-10-
Cleaning
Cleaning with air spray
1. Remove the cabinet top following to “Mechanical Dis-
assemblies”.
2. Clean up the LCD panel and polarizing plate by using
the air spray from the cabinet top opening.
Caution:
Use a commercial (inert gas) air spray designed for
cleaning camera and computer equipment. Use a resin-
based nozzle only. Be vary careful not to damage optical
parts with the nozzle tip. Never use any kind of cleanser
on the unit. Also, never use abrasive materials on the
unit as this may cause irreparable damage.
After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass,
lens, etc., causing the picture to darken or color to blur. If this occurs, clean the inside of optical unit.
Remove dust and other particles using air spray. If dirt cannot be removed by air spray, disassemble and clean the
optical unit.
Disassembly Cleaning
Disassembly cleaning method should only be performed
when the unit is considerable dirty and cannot be suf-
ficiently cleaned by air spraying alone.
Be sure to readjust the optical system after perform-
ing disassembly cleaning.
1. Remove the cabinet top and main units following to
“Mechanical Disassemblies”.
2. Remove the optical base top following to “Optical
Unit Disassemblies”. If the LCD panel needs cleaning,
remove the LCD panel unit following to “LCD panel
replacement”.
3. Clean the optical parts with a soft cloth. Clean ex-
tremely dirty areas using a cloth moistened with al-
cohol.
Caution:
The surface of the optical components consists of mul-
tiple dielectric layers with varying degrees of refraction.
Never use organic solvents (thinner, etc.) or any kind of
cleanser on these components.
Since the LCD panel is equipped with an electronic cir-
cuit, never use any liquids (water, etc.) to clean the unit.
Use of liquid may cause the unit to malfunction.
Maintenance

-11-
Security Function Notice
This projector provides security functions such as "Key lock", "PIN code lock" and "Logo PIN code lock". When the pro-
jector has set these security function on, you are required to enter correct PIN code to use the projector. If you do not
know the correct PIN code to the projector, the projector can no longer be operated or started. In this case, you must
reset those function first according to the resetting procedure described below and then check up on the projector.
Resetting procedure
1Disconnect the AC power cord from the AC outlet.
2As pressing the SELECT button on the projector, connect the AC power cord into an AC outlet again. Keep
pressing the SELECT button until the POWER indicator lights continuously.
This is complete the resetting of the security function. The PIN code lock and Logo PIN code lock are reset as
the initial PIN code at the factory and the Key lock function is disabled.
Please refer to the owner's manual for further information of the security functions.
Function Description
Key lock
Locks operation of the top control or the remote con-
trol.
If the Key lock is enabled with top control lock, the
projector can no longer be started.
Initial setting: Key lock function is disabled
PIN code lock
Prevents the projector from being operated by an un-
authorized person.
Initial code: “1234”
Logo PIN code lock
Prevents an unauthorized person for changing the
start-up logo and captured image on the screen.
Initial code: “4321”
Security Function Disable
When "WPS Push Button" or "WPS PIN CODE" is selected, "Network setting (Network Security)" in the OSD menu
will be set Disable.
Please refer to the Group 202 in the "Service Adjustment Data Table" for further information of this security func-
tion.
Network security Function Disable

-12-
zCabinet Top, Front, R/C Board removal
Mechanical Disassembly
Mechanical disassembly should be made following procedures in numerical or-
der.
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.
Screws Expression
(Type Diameter x Length) mm
T type M Type
A (T3x10)x5
Cabinet front
R/C Board
Fig.1
B (M2.5x6)x2
Cabinet top
D (M2.5x6)
E (T2x6)X2
1. Remove 5 screws A(T3x10) to remove the cabinet top.
2. Remove 2 screws B(M2.5X6) and 2 screws C(T3x8) to
remove the Cabinet front.
3. Remove screw D(M2.5x6) and 2 screws E(T2x6) to
remove the Cabinet front shield.
4. Remove 2 screws F(T2x8) to remove the
Antenna board.
5. Remove screw G(T2x8) to remove the R/C Board.
6. Remove 4 screws H(T3x8) to remove the Lens cap
base and slide shutter.
Control Buttons
C (T3x8)x2
A
A
A
A
F (T2x8)x2
G (T2x8)
B
C
E
Cabinet front shield
F
Antenna Board
Decoration LED
DEC Inlay LED front
H (T3x8)x4
H
H
H
Lens cap base
Slide shutter

-13-
Mechanical Disassembly
xMain Board, AV Board, Rear Panel and Fans removal
Main board Rear panel
E(M2.5x6)
Fig.2
AV board
A (M2.5x6)x5
Side grill
F (T3x6)x2
D (T3x6)(Black)x2
1. Remove 6 screws A(M2.5x6),screw B(M2.5x6) and C(M4x4)to remove the Main board.
2. Remove 2 screws D(T3x6) to remove the AV board and the Rear panel.
3. Remove screw E(M2.5x6) to remove the Optical top shield.
4. Remove screw F to remove fans (FN901, FN902) and the Side grill.
FN901
FN902
A (T3x8)
B (M3x8)
FN907
1. Disconnect the lamp ballast socket.
2. Remove screw A(T3x8) and B(M3x8)
to remove fan (FN907)
Fig.3
cFan (FN907) removal
Trigger
Trigger Duct
* Trigger should be mounted as
the figure above.
Ballast
socket
A
A
A
A
D
F
B (M2.5x6)
C (M4x4)
Optical
top shield

-14-
Mechanical Disassembly
vOptical unit, NETWORK board, Temp., Line Filter board,Fans removal
Fig.4
Temp. board
SP901
Projection lens
Noise filter
Optical unit
D (T3x6)x2
C (T3x8)x2
(M2.5x8)x4
B (T3x8)x2
E (T3x6)
Line filter board
FN904
FN903
FN905
Duct bottom
1. Remove 5 scrws A(T3x8) to remove the Optical unit.
2. Remove 2 screws B(T3x8) to remove the NETWORK board.
3. Remove 2 screws C (T3x8) and 4 hooks on the duct and then remove the Duct top.
Remove the Line filter board.
4. Remove 2 screws D(T3x6) to remove the Noise filter and remove screw E (T3x6)
to Temp. board.
5. Remove fans (FN903, FN904, FN905) and SP901.
Duct top
NETWORK board
A(T3x8)x5
A
A
AA
B D
C

-15-
Mechanical Disassembly
Fig.5
bPower, Ballast, Lamp Cover Sw Board, Thermal Sw(SW902) removal
Isolation sheet (2 sheets)
Lamp cover
switch board
Thermal switch
(SW902)
Power board
C(T3x6)x2
E (T3x6)
G(T3x6)
F (T3x6)
Ballast board
1. Remove the 2 screws A( T3x8) (top side), remove the 2 screws B (T3x8)
(bottom side) and remove screw G(T3x6) to remove the Power board assy.
2. Remove the Isolation sheet.
3. Remove 2 screws C(T3x6) to remove the Ballast board.
4. Remove the screw E (T3x6) and remove the Lamp cover switch board.
remove the screw F (T3x6) and remove the thermal switch (SW902).
B (T3x8)x2
C
B
A
A(T3x8)x2

-16-
Optical Parts Disassembly
Before taking this procedure, remove Cabinet Top , Cabinet Front and Main Board following to the “Mechanical Disas-
sembly”.
Disassembly requires a 2.0mm hex wrench.
zIntegrator lens-in disassembly
Fig.1
xRelay lens-out disassembly
Fig.2
Note: The optical unit should be removed from the cabinet bottom before removing the projection lens.
Hooks
Integrator lens-in
Integrator Lens-In Ass'y
(M2.5x5)x2
* Rugged surface
(Behind)
Relay lens-out
Relay lens-out Ass'y
(M2.5x5)x2
Spring

-17-
Optical Parts Disassembly
Polarized glass
Polarized glass-in Ass'y
(M2.5x5)x1
Film sheet
cPolarized glass-in disassembly
Fig.3
* Mount the polarized
glass as the film at-
tached side faces the
prism side.
Hooks

-18-
Optical Parts Disassembly
LCD Panel/
Prism Ass’y
Fig.4-1
v LCD Panel/Prism Ass’y removal
(M2.5x4)x2
(M3x10)
(Bottom side)
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 points.
- Check that there is no color shading at the top, bottom, left or right of the screen. If there is, try to remove the
shading following to the chapter “Optical Adjustment”.
- Check the white balance. If it needs the adjustment, adjust the white balance following to the “White Balance
adjustment” , “Gamma adjustment” and “Common Center adjustment” in the chapter “Electrical Adjustment”.
- Check the white uniformity on the screen.
If you find the color shading at the some part of the screen, it needs to take the color shading adjustment.This ad-
justment should be performed by a computer and it also requires a special software “Color Shading Correction”.

-19-
Optical Parts Disassembly
L3D07X-85G00
1-B-1234A1
-85G00
L3D07X-86G00
1-B-1234A1
-86G00
G-LCD PANEL
There are 2 types of LCD Panel/Prism Ass'y for this model. Either L-Type or R-Type LCD Panel/Prism Ass'y is used on
the projector. Check which type of LCD Panel/Prism Ass'y is used with the figure below.
When replacing the LCD Panel/Prism Ass'y, you need to take "Panel Type Check and Setting" on the Electrical Adjust-
ment for the replaced LCD Panel/Prism Ass'y.
The gamma-characteristics is different between L-Type and R-Type LCD Panel/Prism Ass'y.
How to check the type of LCDPanel/Prism Ass'y
Check the printed number on the flat cable of the G-LCD Panel.
L-Type LCD Panel/Prism Ass'y R-Type LCD Panel/Prism Ass'y
Fig.4-2
Panel Type Check

-20-
Optical Parts Disassembly
bPolarized glass, Pre-polarized glass removal
Pre-Polarized Glass(G)
(M2x2)
Film attached faces
the Prism side
(Blue)
(Red)
(Green)
Fig.5
nOptical unit top removal
(M3x8)x2
Pre-Polarized Glass(B)
Fig.6
Polarized Glass(G)
Polarized Glass(R)
Polarized Glass(B)
(M2x2)
Optical top A
Optical top B
1. Remove the Optical top A and Optical Top B.
Film attached faces the
Prism side
*Mounting the polarized glasses as the film
attatched side faces the LCD panel side.