Eiki LC-W3 User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
1 122 318 01 (M4YB)
1 122 319 01 (P4YB) REFERENCE NO. SM5110781-00
Model No. LC-W3
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
projector.
FOREWORD
For your convenience, all service parts, identified in this manual are available through Eiki’s normal distribution
channels.
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
semiconductor, it may be more economical and expeditious to purchase the part locally.
ORIGINAL VERSION
Chassis No. M4Y-W300

-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
Fuse ............................................................................ 5
Thermal switch ........................................................... 5
Interlock switch ........................................................... 5
Warning temperature and power failure protection ..... 6
Air filter care and cleaning .......................................... 6
Lamp Replacement ....................................................... 7
How to reset Lamp Replace Counter ......................... 7
How to check Lamp use time ...................................... 7
Mechanical Disassemblies ............................................ 8
Optical Parts Disassemblies ........................................ 13
LCD Panel/Prism Ass’y Replacement ......................... 18
Adjustments ................................................................. 19
Turning On the Projector ........................................... 19
Adjustments after Parts Replacement ...................... 19
Optical Adjustments ..................................................... 20
Electrical Adjustments ................................................. 23
Service Adjustment Menu Operation ........................ 23
Memory IC Replacement (IC802) ............................. 23
Circuit Adjustments ................................................... 24
Test Points and Locations ......................................... 27
Service Adjustment Data Table ................................. 28
Chassis Description ..................................................... 45
Block Diagrams ......................................................... 45
Chassis over view ..................................................... 45
Input & video precessing stage ................................ 46
LCD panel driving stage ........................................... 47
Audio signal precessing stage .................................. 48
Lamp control stage ................................................... 49
Fan control stage ..................................................... 50
Motor control stage .................................................. 51
Serial bus control stage ........................................... 52
Power supply control & power failure detection ........ 53
LED indicators and projector condition ..................... 54
Power failure detection system ................................ 55
Power failure detection tree ...................................... 56
Error History Log ...................................................... 57
Diagnosis of Power Failure with RS-232C port ......... 58
Diagnosis procedure ................................................. 58
Error information table .............................................. 59
Control Port Functions ................................................. 60
System Control & I/O Port Table ............................... 60
Cleaning ...................................................................... 67
IC Block Diagrams ....................................................... 68
Electrical Parts List ...................................................... 77
Mechanical Parts List ................................................ 108
Cabinet Parts Location ........................................... 108
Optical Parts Location ............................................ 109
Mecanical Parts List ............................................... 113
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

-3-
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.
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 person-
nel 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
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.
Safety Instructions

-4-
Specifications
● The specifications are subject to change without notice.
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.
Projector Type Multi-media Projector
Dimensions (W x H x D) 12.6” x 6.6” x 16.8” (319mm x 168mm x 429.5mm)
Net Weight 19.2 lbs (8.7 kg)
LCD Panel System 1.21” TFT Active Matrix type, 3 panels
Panel Resolution 1366 x 768 dots
Number of Pixels 3,147,264 (1366 x 768 x 3 panels)
Color System 6 color system (PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N)
High Definition TV SIgnals 480i, 480p, 575i, 575p, 720p. 1035i and 1080i
Scanning Frequency H-sync. 15 ~ 100kHz, V-sync. 50 ~ 100Hz
Projection Image Size (diagonal) Adjustable from 30” to 400”
Horizontal Resolution 800 TV lines (HDTV)
Projection Lens F 1.8 ~2.1 lens with f=48.4mm ~ 62.8mm with motor zoom and focus
Throw Distance 5.0’ ~ 52.2' (1.5m ~ 15.9m)
Motorized Lens Shift Up and Down
Projection Lamp 300 watts
Input 1 Jacks DVI Terminal (Digital), HDB 15-pin Terminal (Analog) and Stereo Mini Type
Jack (Audio)
Input 2 Jacks BNC Type x 5 (G or VIDEO/Y, B or Cb/Pb, R or Cr/Pr, H and V), Stereo
Mini Type Jack (Audio)
Input 3 Jacks RCA Type x 3 (VIDEO/Y, Cb/Pb, Cr/Pr), RCA Type x 2 (Audio R and L) and
DIN 4-pin (S-Video)
Other Jacks DIN 8-pin (Control port), Wired Remote Jack and Network Board Connector
Jack
Built-in Speakers 2 speakers Stereo (R and L), 2 watts RMS (T.H.D. 10%)
Feet Adjustment 0˚ to 10.5˚
Voltage and AC 100 ~ 120V (3.6A Max. Ampere), 50/60Hz (The U.S.A and Canada)
Power Consumption AC 200 ~ 240V (1.8A Max. Ampere), 50/60Hz (Continental Europe)
Operating Temperature 41 ˚F ~ 95 ˚F (5˚C ~ 35˚C)
Storage Temperature 14 ˚F ~ 140 ˚F (-10˚C ~ 60˚C)

-5-
Interlock switch
The interlock switch (SW902) cuts off the AC mains power sup-
ply 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
prevent 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.
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;
Fuse Part No.: 423 025 1201
TYPE T8AH 250V FUSE
LITTEL FUSE INC. TYPE 215008
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 Line Filter Board
Interlock switch
Thermal switch
Lamp cover
Circuit Protections

-6-
Circuit Protections
Warning temperature and power failure protection
The TEMP WARNING 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
supply 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 TEMP WARNING 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 an air fil-
ters 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
filters 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-
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
1 Turn off the projector and disconnect the AC cord. Allow the projector to
cool for at least 45 minutes.
2 Loosen 2 screws with a screwdriver and open the lamp cover.
3 Loosen 2 screws and pull out the lamp assembly by grasping the han-
dle.
4 Replace the lamp assembly securely and tighten 2 screws.
5 Close the lamp cover and tighten 2 screws.
6 Connect the AC cord to the projector and turn on.
7 Reset the Lamp Replace Counter, see below explanation.
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.
Lamp Replacement
1 Turn the projector on, and press the MENU but-
ton and the on-screen menu will appear. Press the
POINT LEFT/RIGHT buttons to move a red frame
pointer to SETTING menu icon.
2 Press the POINT DOWN button to move a red frame
pointer to “Lamp counter reset” and then press the
SELECT button. The message “Lamp replace coun-
ter reset?” is displayed. Move the pointer to [Yes] and
the press the SELECT button.
3 Another confirmation dialog box appears and select
[Yes] to reset Lamp Replace Counter .
Please refer to the owners manual for further information.
Recommendation
Should the air filter become clogged with dust par-
ticles, 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 projec-
tion lamp is replaced.
Refer to “Air Filter Cleaning”.
Lamp cover
ORDER REPLACEMENT LAMP
Type No. Service Parts No.
POA-LMP98 610 325 2957
How to reset Lamp Replace Counter
Screws
Handle
Lamp Assembly
How to check Lamp use time
The LAMP REPLACE indicator will light red when the
total lamp used time (Corresponding value) reaches
2000 hours. This is to indicate that lamp replacement
is required.
The total lamp used time is calculated by using the be-
low expression,
Total lamp used time = Teco + Tnormal (1 + 1/3)
Teco: used time in the Eco mode
Tnormal : used time in the Normal mode
You can check the lamp used time following to the below
procedure.
1 Press and hold the POWER ON-OFF button on the
projector for more than 20 seconds.
2 The projector used time and lamp used time will be
displayed on the screen as follows.
Press MENU button to disappear the screen display.
Counter
Projector 525H
Lamp
Normal 150H
Eco 375H
Corresponding value 575H
Total lamp used time
Projector used time

-8-
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
Fig.2-2
1 Remove 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
and Lens Front Cover.
1 Cabinet Top removal
1 Tilt up the cabinet Front-Top slightly and remove the
Lens Front Cover off by pulling forward as shown in
Fig.2-1.
2 Remove the Cabinet Front-Top, Lens Cover Holder and
Lens Cover upward off.
3 Remove 2 screws D to take the Cabinet Front off.
4 Remove the RC Board and speakers on the Cabinet
Front.
2 Cabinet Front removal
UP
Fig.2-1
C
B
A
A
A
A
B
A
D
D
Cabinet Front-Top
Lens
Front
Cover
Lens Cover Holder
Cabinet Front
Lens Cover
C
Mechanical Disassemblies

-9-
Mechanical Disassemblies
1 Remove 6 screws to take the Main Board upward.
Fig.3
Fig.4
1 Remove 1 screw A and take the Rear Panel ass’y
upward off.
2 Remove 4 screws B to take the fan (FN905) off.
3 Remove 5 screws C and 1 screw D to take AV Board
from the Rear Panel ass’y off.
4 Remove 2 screws E and grounding leads and then pull
up the I/F Board and Holder assy from the bottom cabi-
net.
5 Remove 4 screws F to take the I/F Board.
3 Main Board removal
4 AV, I/F Board & Rear Panel removal
Main Board
A
B
B
B
B
C
D
Rear Panel Ass’y
FN905
AV Board
I/F Board
F
F
F
FEE

-10-
Mechanical Disassemblies
1 Remove 4 screws A to take the Ballast Cover upward
off.
2 Remove 2 screws B to take the Fan (FN904) off.
3 Remove the Sub Power Board and Drive Board by pull-
ing them upward.
Fig.5
5 Lamp Ballast Unit removal
A
Ballast Board
FN904
Sub Power
Board
Drive Board
A
AA
B
B
Ballast Cover
1 Remove 1 screw A and then remove the holders.
2 Remove 2 screws B and 4 screws C(small) and pull the
Optical Unit upward off.
3 Remove 4 screws D to take the Fan (FN906) off.
4 Remove 1 screws E to take the Fan (FN903) off and 2
screws F to take the air duct off.
5 Remove 3 screws G to take the Fan (FN907) off.
Fig.6
6 Optical Unit removal FN906
FN903
Optical Unit
B
B
CC
CC
D
D
D
E
F
F
A
FN907
G
G
G

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

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

-13-
1 Remove Cabinet Front-Top following to the chapter “Mechanical
Disassemblies”.
2 Loosen 2 screws A with 2.5mm hex wrench.
3 Unhook 2 hooks B on the both side of the lens and remove the Projection
Lens ass’y off.
Fig.1
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.
Projection Lens removal
Fig.1-2
1 Remove each hex screw and pull the Polarized Glass-In ass’y upward.
2 Remove the stoppers and take the glasses off.
* The B-Plolarised Glass-In ass'y does not provide the Optical filter.
Polarized Glass-In and Optical filter removal
Fig.2-1
A
A
B
B
Optical Filter(WV)
Polarized Grass
1AV4Z15***
1AV4Z15***
Part No.
Part No.
Film side
Film side
* Glasses should be placed as the
film sheet attached side comes to
LCD panels side. Fig.2-2

-14-
Optical Pats Disassemblies
1 Remove 2 hex screws A and pull the Relay Lens ass’y upward.
2 Remove 2 screws B to take the Lens off from the holder.
Note:
There is no mounting direction of the lens.
A
Fig.3-2
Fig.3-1
B
B
Holder
Relay Lens
A
Relay Lens disassembly

-15-
Note:
Do not replace the LCD panel
separately otherwise it can
not obtain proper picture.
Fig.4-1
1 Remove 4 hex screws A and take the LCD/Prism ass’y off upward.
2 Remove 3 screws B and take the Glass Holder, and then pull the
Polarized Glass-Out, Pre-polarized Glass-Out and Optical Filter(WV)
upward off. These glasses are mounted for R, G and B LCD panels
respectively. The R-panel does not provide the Pre-polarized Glass-Out.
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
Polarized Glass-Out and Optical Filter(WV) removal
A
A
A
Optical Pats Disassemblies
LCD Panel/Prism Assembly
LCD PANEL
(GREEN)
LCD PANEL
(BLUE)
LCD PANEL
(RED)
1245
2345
32 4 5
Phase Sheet
(*2)
TOP VIEW
Fig.4-3
*2 See Fig 4.3 below for the mount
direction of the parts. Fig.4-2
BB
B
Pre-Polarized
Glass-Out (* 1)
Phase Sheet
Optical Filter(WV)
Phase Sheet
Polarized Glass-
Out
Mount direction of the parts
Key No. Parts
1 Prism assembly
2 Polarized glass out
3 Pre-polarzed glass out
4 Optical Filter(WV)
5 LCD panel

-16-
* Lens should be placed
as the flat surface side
comes to the holder
side.
Optical Parts Disassemblies
1 Remove 7 screws to take the Optical Unit Top off upward.
Optical Unit Top removal
1 Remove 2 hex screws A and take the Condenser Lens ass’y.
2 Release 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
Condenser Lens
Fig.5

-17-
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.
Optical Parts Disassemblies
14
12
8
Fig.7
3
14 1
24
9
13
6
1 Condenser lens (R)
2 Condenser lens
3 Condenser lens
4 Mirror (B)
5 Optical filter (UV cut)
6 Dichroic mirror (B
7 Dichroic mirror (G)
8 Mirror (W)
9 Condenser lens (IN)
10 PBS (prism beam splitter)
11 Integrator lens (OUT)
12 Integrator lens (IN)
13 Relay lens (IN)
14 Mirror (R)
7
10
11
5
The printed marker
comes this side.
The cutting corner
comes to this side up.
Key No. Description
Locations and Directions
The printed marker
comes this side.

-18-
Note:
Do not replace the LCD
panel separately otherwise
it can not obtain proper
picture.
LCD Panel/Prism Ass’y Replacement
1 Remove the cabinet top and main board following to
“Mechanical Disassemblies”.
2 Remove 4 screws by using the 2.0 mm hex driver and
take the LCD Panel/Prism ass’y off upward from the opti-
cal 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 A on the LCD Panel/Prism ass'y with
2.0 mm hex driver.
2 Turn the projector on and project the image with WIDE
zoom, and adjust the FOCUS control to obtain the best
focus.
3 Turn the ZOOM control to the TELE position.
4 Move the LCD Panel/Prism Ass’y backward or for-
ward (about 0mm ~ 0.8mm) to obtain the proper focus.
Confirm the focus at TELE and WIDE zoom.
5 Tighten 4 screws A to fix the LCD Panel/Prism ass'y.
Top View A
A
A
A
LCD Panel/Prism Ass’y
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

-19-
Adjustments
● : Adjustment necessary ❍ : Check necessary
Disassembly/Replaced Parts
LCD/Prism
Ass'y
Condenser
Lens
Relay
Lens
Polarized glass Power
Board
Sub
Power
Board
Main
Board
R G B
Mechanical
adjustment
Condenser lens adjustment ❍ ●
Relay lens adjustment ❍ ●
R-Contrast adjustment ●
G-Contrast adjustment ●
B-Contrast adjustment ●
Electrical adjustment
Output voltage adjustment ●
Fan output voltages adjustment ● ●
Video center adjustment ●
NRS adjustment ●
Reference voltages 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 ❍ ❍
Adjustments after Parts Replacement
Turning On the Projector
If the PIN code is set on the projector, you cannot use the projector. The PIN code can be reset to the factory default
setting (1234) according to the following procedure.
When you reset the PIN code, the Logo PIN code and key lock will be reset, as well.
1. Disconnect the AC power cord from the AC outlet.
2. As 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.
3. Turn the projector on with the ON-OFF button, enter the PIN code "1234" (the factory default setting).
Please refer to the owners manual for further information.

-20-
Optical Adjustments
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.
Optical Filter(WV)
Optical Filter(WV)
Polarized Glass
Polarized Glass
Fig.1-1
Polarized glass
mounting base
A
Fig.1-2
B
Fig.1-3
C
[Before Adjustment]
- Input a 100% of black raster signal.
1 Loosen a screw A (Fig.1-1/1-4) on the polarized glass mount-
ing base which you intend to adjust.
2 Turn the polarized glass mounting base with knob B as shown
in Fig.1-2 to obtain the darkest brightness on the screen. (The
polarized glass and optical filter move together.)
3 Turn the optical filter mounting base with know C as shown
in Fig.1-3 to obtain the black color uniformity on the
screen.(Move only the optical filter.)
4 Tighten the screw A to fix the polarized glass mounting base.
Repeat steps 1 to 4 for remaining R, G or B contrast adjustment.
Contrast adjustment
WARNING : USE UV RADIATION EYE AND SKIN
PROTECTION DURING SERVICING.
CAUTION:
To prevent suffer of UV radiation, those adjustments
must be completed within 25 minutes.