Eiki 1 122 511 01 User manual

* Projection lens is optional.
PRODUCT CODE
1 122 511 01 (KL8B)
1 122 512 01 (LL8B)
1 122 512 06 (LL8G)
Multimedia Projector
SERVICE MANUAL
REFERENCE NO. SM5111321-00
Model No. LC-HDT2000
U.S.A., Canada,
Europe, H.K
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 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 semicon-
ductor, it may be more economical and expeditious to purchase the part locally.
ORIGINAL VERSION
Chassis No. KL8-HDT200000

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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
Fuses (F601, F602, F603)...............................................5
Thermostats (SW903, SW904, SW905, SW906) ...........6
Temperature sensors, wind sensors ...............................7
Power failure, fan lock and filter error detection ..............8
Maintenance.................................................................. 9
Maintaining the AMC unit ................................................9
Replacing the Filters .....................................................10
Resetting the Filter counter ........................................... 11
Lamp management ....................................................... 12
Lamp replacement ........................................................ 13
Checking the projector used time and lamp used time. 14
Quick maintenance ....................................................... 15
Cleaning the optical parts.............................................. 16
Cleaning the Projection lens ......................................... 16
Cleaning the Projector cabinet ...................................... 16
Security Function Notice ............................................. 17
Lens Mounting............................................................. 18
Mechanical Disassembly............................................. 22
Mechanical disassembly flow chart...............................22
Mechanical disassembly ...............................................23
Optical Parts Disassembly .......................................... 44
Adjustments................................................................. 58
Adjustments after Parts Replacement...........................58
Note on Main board replacement..................................58
Optical Adjustments .................................................... 59
Optical adjustment location...........................................59
Before adjustment .........................................................60
1. Optical center adjustment..........................................62
2. PBS adjustment.........................................................66
3. Contrast adjustment ..................................................67
4. Back focus adjustment ..............................................68
5. Convergence adjustment ..........................................69
Adjustment ....................................................................72
Electrical Adjustments................................................. 73
Service adjustment menu operation .............................73
Circuit adjustments........................................................ 74
Test points and locations...............................................78
Service adjustment data................................................79
Chassis Description .................................................. 157
Chassis over view........................................................ 157
Boards connection ...................................................... 158
Troubleshooting......................................................... 159
No Picture.................................................................... 159
No Power..................................................................... 163
Power supplies to boards ............................................ 164
AC-DC power board ....................................................165
DC power borad .......................................................... 166
PFC-1 & PFC-2 board .................................................167
Power supply and power failure detection...................168
Power drive and power failure signals......................... 171
Fan control system ...................................................... 172
Motor control system ................................................... 173
Temperature abnormality ............................................ 174
Lamp abnormality........................................................ 175
Lamp control system ................................................... 176
Power failure detection system ...................................177
Error information table................................................. 177
Error history log ........................................................... 178
Diagnosis of power failure with RS-232C port ............ 179
Diagnosis procedure ................................................... 179
Indicators and projector condition ............................... 180
Serial Control............................................................. 183
Serial control interface ................................................183
Control Port Functions............................................... 185
IC Block Diagrams..................................................... 188
Parts Location Diagrams........................................... 194
Mechanical Parts List ................................................ 212
Electrical Parts List.................................................... 214
Diagrams & Drawings.................................................. A1
Parts description and reading in schematic diagram ..A2
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams................................. A19
Pin description of diode, transistor and IC ................A33
Note on Soldering......................................................A34

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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
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
THE PROTECTIVE SHIELD IN POSITION AND PR
OPERLY 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.

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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) 25.59” x 13.74” x 32.09” (650.0 mm x 349.0 mm x 815 mm)
Net Weight 102.5 lbs (46.5 kg)
Feet Adjustment ±3.0˚
Panel Resolution
LCD Panel System 1.64” TFT Active Matrix type, 3 panels
Panel Resolution 2,048 x 1,080 dots
Number of Pixels 6,635,520 (2,048 x 1,080 x 3 panels)
Signal Compatibility
Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N
HDTV Compatible 720p, 1035i, 1080i, 1080p and 2K
SDTV Compatible 480i, 480p, 575i and 575p
Input Scanning Frequency H-sync. 15 kHz–120 kHz, V-sync. 48 Hz–120 Hz
Optical Information
Projection Lamp 380 W NSHA lamp x 4
Interface
Input 1 DVI-D Terminal (Digital), Mini D-Sub 15-pin Terminal (Analog), HDMI (v.1.3 with Deep Color)
Input 2 BNC Type x 5 (VIDEO/Y/G, B/Pb/Cb, R/Pr/Cr, H/HV and V), S-Video
Other Jacks Serial port in (D-sub 9), Serial port out (D-sub 9), USB port, LAN port (RJ-45),
and Wired Remote Jack
Power
Voltage and Power Consumption AC 200–240 V (11.0 A Max. Ampere), 50/60 Hz
Operating Environment
Operating Temperature 41˚F–104˚F (5˚C–40˚C)
Storage Temperature 14˚F–140˚F (-10˚C–60˚C)
Remote Control
Battery AAA or LR03 Type x 2
Operating Range 16.4’ (5 m/ ±30˚)
Dimensions 1.9” (W) x 1.1” (H) x 5.7” (D) (48 mm x 27 mm x 145 mm)
Net Weight 3.6 oz (102 g) (including batteries)
●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.

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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.
Circuit Protections
Fuses are located inside of the projector. When the POW-
ER/LAMP indicators are not lighting, one of the fuses may
be opened. Check the fuses as following steps.
The fuses should be used with the following type;
Location : F601 / F603
Fuse Part No. : 323 025 1204
TYPE 8.0A 250V FUSE
215008, LITTEL
How to replace the fuses
1. Remove the cabinet top, Main board, PFC/Ballast Box1-2
following to "Mechanical disassembly".
2. Remove the fuses F601, F602 and F603 on the AC Filter
board.
To install the fuses, take reversed step in the above.
Fuses (F601, F602, F603)
F603
F602 F601
Location : F602
Fuse Part No. : 323 021 7804
TYPE 6.3A 250V FUSE
210506.3, LITTEL
AC Filter board

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Circuit Protections
There are the thermostat switches (SW903, SW904, SW905 and SW906)
inside of the projector to detect the internal temperature rising abnormally.
When the internal temperature reaches near 90˚C, the thermostat opens to
stop the operation of the power supply circuit.
The thermostat will automatically return to normal condition when the inter-
nal temperature becomes normal.
SW904
Thermostats (SW903, SW904, SW905, SW906)
SW903
SW906
SW905

-7-
The projector provides 2 temperature sensor ICs, 1 sensor on the Main board and 1 sensor on the Ex Temp board,
and 1 wind sensor on the intake duct. The sensor ICs monitor surrounding temperature of the panels/prism, and
surrounding temperature of the intake duct, and the wind sensor monitors airflow passed through the air filter in the
intake duct.
- Temperature sensor (IC8851) on the Main board for monitoring the surrounding temperature of B-panel.
- Temperature sensor (IC8811) on the Ex Temp board for monitoring the surrounding temperature of the intake
duct.
- Wind sensor (S901) on the filter box.
Circuit Protections
IC8851
(Behind)
Temperature sensors, wind sensors
S901
Wind sensor
IC8811
The projector is shut down and the WARNING TEMP. indica-
tor is blinking red.
When the temperature inside the projector reaches a certain level, the WARN-
ING TEMP. indicator starts blinking. If the temperature rises moreover, the
projector will be automatically shut down to protect the inside of the projector,
and the WARNING TEMP. indicator is blinking fast and the POWER indicator
turns off. When the projector has cooled down enough (to its normal operat-
ing temperature), the POWER indicator turns on and the projector can be
turned on again by pressing the ON/STAND-BY button.
✔Note:
• The WARNING TEMP. indicator continues to blink even after the tempera-
ture inside the projector returns to normal. When the projector is turned on
again, the WARNING TEMP. indicator stops blinking.
Indicators
WARNING TEMP.
blinking red
Check the items below
- Remove dust around the air filter.
- 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 (Norma; operating
temperature is 5 to 40 ºC or 41 to 104 ºF).

-8-
The projector provides the detection circuits of the power failure, the fan lock and the AMC filter error. When the de-
tection circuit detects an error at the power supply line, at the fan operation circuit or at the AMC filter control circuit,
the projector will turn into the standby mode to protect the other circuits defective.
Circuit Protections
Power failure, fan lock and filter error detection
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD
CONNECTED UNDER AN ABNORMAL CONDITION. IT MAY RE-
SULT IN FIRE OR ELECTRIC SHOCK.
Indicators
The projector is shut down; and the LAMP indicator is light-
ing and other indicators are blinking.
When the projector detects an abnormal condition (Power supply lines failure
, fans failure or AMC filter failure), it will be automatically shut down to protect
the inside of the projector and the LAMP indicator lights on and other indica-
tors blink. In this case, unplug the AC power cord and plug it, and then turn on
the projector once again to verify operation. If the projector cannot be turned
on and these indicators are still lighting and blinking, unplug the AC power
cord. See the troubleshooting chapter.
LAMP indicator lights on
and other indicators blink.

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Maintaining the AMC unit
AMC unit
AMC unit
Filter cleaning
unit cover
Dust collects here.
We recommend avoiding dusty/smoky environments
when operating the projector. Usage in these environ-
ments may cause a poor image quality.
When using the projector under dusty or smoky condi-
tions, dust may accumulate on a lens, liquid crystal pan-
els, or optical elements inside the projector. Such condi-
tion may degrade the quality of the projected image.
When the symptoms above are noticed, contact your au-
thorized dealer or service center for proper cleaning.
3
4
5
5
Overturn the AMC unit and loosen the 2 screws that
secure the filter cleaning unit.
Loosen the 2 screws that secure the AMC unit and
pull it out.
After opening the cover of filter cleaning unit, take out
the dust bin from the filter cleaning unit, empty the
dust bin by discarding the dust into a trash bin or care-
fully sucking up the dust with a vacuum cleaner, clean
the brush and both surface of the mesh filter, place
back the dust bin, and then close the cover with the 2
screws.
Remove the dust on the projector and air vents.
Press the ON/STAND-BY button on the side control or
the STAND-BY button on the remote control, flip the
Main On/Off Switch off, and then unplug the AC power
cord from the AC outlet.
1
2
3
4
Close the dust tray
slowly and dispose
the dust.
Screws
Screws
Dust tray
Filter cleaning unit
When you suck up
the dust with a vac-
uum cleaner, use a
crevice tool.
Dust bin
6
7
Place the AMC unit back into the projector and fix it
with the 2 screws.
Plug the power cord and power on the projector.
Brush
Maintenance
Note:
• The projector will turn off for safety, when the AMC unit is
removed during the power-on.
• When using a vacuum cleaner to remove the dust on the
mesh filter, be careful as the filter tears easily.
• When the mesh filter gets dirty extremely, replace it with
new one.
Mesh filter

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CAUTION
• After cleaning or replacing the filter, insert the AMC unit com-
pletely. If not, the projector cannot be turned on.
• Both electrostatic pleated filter and electrostatic honeycomb
filter must be replaced with new one at the same time not to
replace only one side filter.
• Do not reset the filter counter if the filters are not replaced.
• Do not wash the filters in water or any other liquid. Otherwise
the filters may be damaged.
Holder A
Holder B
Holder B Holder A
Electrostatic
pleated filter
Electrostatic
honeycomb filter
4
6
7
8
9
Slide a pair of the holders: A and B in the arrow direction
in the figure, loosen the 3 screws that secure the holders,
and remove the holders.
After inserting your fingers through the slits and lifting the
filters on the mesh filter to remove them easily, remove
the filters one by one, and suck up the dust accumulated
on the mesh filter and the frame with a vacuum cleaner.
Put the new electrostatic honeycomb filter on the mesh
filter, the new electrostatic pleated filter on the honey-
comb filter, the holders on the electrostatic pleated filter,
respectively.
Slide backward the holders until the arrow marks on the
holders are aligned with those on the AMC unit, and then
fix with the screws.
Place the AMC unit back into the projector and fix it with
the 2 screws.
Plug the power cord, power on the projector and reset
the filter counter as shown in next page.
5
4
6
Screws
Slit
Slit
5
Loosen the 2 screws that secure the AMC unit and pull
it out.
Remove the dust on the projector and air vents.
Press the ON/STAND-BY button on the side control or
the STAND-BY button on the remote control, flip the
Main On/Off Switch off, and then unplug the AC power
cord from the AC outlet.
1
2
3
AMC unit
3
Screws
Replacing the Filters
ORDER REPLACEMENT FILTER
Service Parts No. : 610 354 6902
This service parts contains one set of filters below;
- An Electrostatic Pleated Filter
- An Electrostatic Honeycomb Filter
Maintenance
Mesh filter
7
Filters prevents dust from accumulating on the optical elements inside the projector. Should the filter becomes
clogged with dust particles, it will reduce cooling fans’ effectiveness and may result in internal heat buildup and ad-
versely affect the life of the projector. Clean up around the intake vent diligently.

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Be sure to reset the filter counter after replacing the filters.
Press the MENU button to display the On-Screen Menu.
Use the Point ed buttons to select [Setting] and then
press the Point 8button or the SELECT button.
Use the Point ed buttons to select [Filter counter] and
the press the SELECT button. Use the Point ed buttons
to select [Filter counter reset] and the press the SELECT
button. Filter counter Reset? appears. Select [Yes] to
continue.
1
2
Resetting the Filter counter
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
Select “Used time” and the dia-
logue box below appears.
Maintenance
✔Note:
•Whenever the filters have been replaced, reset the Filter
counter, but if the filters were not replaced, do not reset
the filter counter, as this could cause product damage.

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Maintenance
Lamp management
This Projector is equipped with 4 Projection Lamps to en-
sure brighter image and those lamps are controlled by
the Lamp Management Function. The Lamp Management
Function detects the status of lamps and shows the status
on screen or on the LAMP REPLACE indicators. This func-
tion also automatically controls the Lamp Mode when any of
lamps is out for the end of life or malfunctions.
Projection Lamp lights normally.
LAMP REPLACE Indicator
- When the LAMP REPLACE indicator lights:
Any of the projection lamps is approaching its end
- When the LAMP REPLACE indicator flashes:
The lamp reached its end.
Yellow Lamp
Dim Lamp
X Mark on Lamp
Red Lamp
Projection Lamp is turned off.
Projection lamp is nearing its end. When the
image becomes darker or the color becomes
unnatural, replace lamp. (LAMP REPLACE in-
dicator lights)
(LAMP REPLACE indicator flashes.)
Projection lamp is defective or fails to be turned
on. Restart the projector on, and make sure
lamp is on. If this mark still appears, replace
lamp corresponding with number marked X.
Lamp Mode Changeover
The Lamp mode function automatically changes the light-
ing lamp (Lamp Mode) by detecting the status of lamp.
For example, in 4-lamps mode, if one of the 4 lamps fails,
the projector operates with the rest of the lamps, and the
lamp mode automatically switches to the 3-lamps mode. To
change the lamp mode manually, use the Lamp mode func-
tion. The illustrations shown right are the examples of on-
screen lamp status in each lamp mode.
4-LAMPS MODE 3-LAMPS MODE
Lamp Status Display
The lamp status icons as shown right appears on screen
when the projector is turned on or the input source (input 1,
input 2, Input 3 or input 4) is switched.
You can also check lamp status by using the Information
window.
When lamps 1 and 4
are approaching their
ends.
When Lamp 1 is burnt
out in 4-lamps mode.
LAMP 1/2/3/4 REPLACE Indicators
- When any of the LAMP 1/2/3/4 REPLACE indicators lights:
The corresponding lamp is approaching its end.
- When any of the LAMP 1/2/3/4 REPLACE indicators
flashes:
The corresponding lamp needs to be replaced
2-LAMPS MODE
LAMP REPLACE indicator
LAMP 1/2/3/4 REPLACE indicators

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When replacing the lamp because it has stopped illuminating, there is a possibility that the lamp may be broken.
If replacing a lamp of the projector which has been installed on the ceiling, you should always assume that the lamp
is broken, and you should stand to the side of the lamp cover, not underneath it. Remove the lamp cover gently.
Small pieces of glass may fall out when the lamp cover is opened. If pieces of glass get into your eyes or mouth,
seek medical advice immediately.
Lamp replacement
Maintenance
Check the LAMP 1/2/3/4 REPLACE indicators on top
of the projector. When any of the indicators blinks rap-
idly, wait at least 20 minutes until it blinks slowly. After
that, go to the next step. When any of the indicators
blinks slowly, go to the next step.
Loosen the two screws that securing the lamp and pull
out the lamp by using the handle. (See the right lower
figure.)
Loosen the screw on the lamp cover. Open the lamp
cover. (See the right upper figure.)
Replace the lamp with a new one and tighten the two
screws. Make sure the lamp is set properly.
Follow these steps to replace the lamp.
Close the lamp cover and tighten the screw.
SCREW
LAMP COVER
LAMP 2
LAMP 1
- For continued safety, replace with a lamp assembly of
the same type.
- Do not drop the lamp assembly or touch a glass bulb!
The glass can shatter and may cause injury.
- When replacing the lamp, do it within 30 minutes after
opening the lamp cover.
- Do not insert hand in the empty lamp compartment
after the lamp is removed.
Allow the lamp to cool for at least 20 minutes before you
open the lamp cover. The temperature inside the projec-
tor becomes very hot.
CAUTION
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. Replace the lamp with a new one after it has cooled down. The timing when
the LAMP REPLACE indicator lights up is depending on the mode that you specified for the Lamp control function.
LAMP REPLACE indicator
LAMP REPLACE indicator
LAMP 3
HANDLE
CAUTION
CAUTION
LAMP 4
LAMP 1/2/3/4 REPLACE indicators
Lamp replacement icon
SCREW
SCREW
1
2
3
4
5
TURN OFF THE UV LAMP BEFORE OPEN-
ING THE LAMP COVER.
WARNING:
ORDER REPLACEMENT LAMP
Type No. : POA-LMP147
Service Parts No. : 610 350 9051
Replacement procedure

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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 1.5)
Teco: used time in the Eco mode
Tnormal : used time in the Normal mode 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 or the ON button on the remote control for more than
20 seconds.
2The projector used time and lamp used time will be displayed on the screen briefly as follows.
Maintenance
Checking the projector used time and lamp used time
Counter
Projector 500H
Lamp Lamp 1 Lamp 2 Lamp 3 Lamp 4
Normal 200 H 100 H 200 H 100 H
Eco 300 H 300 H 300 H 300 H
Corresponding value 600 H 450 H 600 H 450 H
Projector used time
Lamp 4 Total lamp used time
Lamp 3 Total lamp used time
Lamp
control Auto Normal Eco 1 Eco 2
Normal ✔ ✔
Eco ✔ ✔
Lamp used time table in the Lamp
control - Lamp mode
If the non-standard lamp is used, the warning and confirmation messages will appear on the screen every startup.
Some of the functions are limited when the non-standard lamp is used in spite of the warning.
Warning message on the non-standard lamp used
Since the lamp is not standard,
projector failed to read lamp data.
Continue to use this lamp?
Yes
No
Lamp 2 Total lamp used time
Lamp 1 Total lamp used time

-15-
Maintenance
This projector provides a cabinet front cover and PBS cover on the cabinet top to enhance the service maintenance.
This enables service personnel to align the optical adjustment or replace the optical parts without disassembly the
cabinet top.
Quick access to the Projection lens unit, LCD panel/prism assy, Polarized glass assy.
Quick maintenance
Quick access to the PBS/Integrator lens assy
1
2
Loosen 2 screws-A, and pull the cabinet front cover-A
forward.
You can access the projection lens unit, LCD panel/
prism assy and Polarized glass assy quickly.
To remove each parts, refer to the chapter "Mechani-
cal Parts Disassembly" and "Optical Parts Disassem-
bly".
1
2
Loosen 1 screw-A on the PBS cover and take the
PBS cover.
You can access the PBS/Integrator lens assy quick-
ly.
To remove it, refer to the chapter "Optical Parts Dis-
assembly". To adjust the PBS/Integrator lens, refer
to the chapter "Optical adjustments".
Cabinet front cover-A
A
A
PBS cover

-16-
Cleaning the optical parts
Cleaning with air spray
Remove the cabinet top following to “Mechanical Disassembly”. Clean up the LCD panel and polarizing plate by us-
ing 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 very 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.
Disassembly cleaning
Disassembly cleaning method should only be performed when the unit is considerable dirty and cannot be suffi-
ciently cleaned by air spraying alone.
Be sure to readjust the optical system after performing disassembly cleaning.
1. Remove the cabinet top and main units following to “Mechanical Disassembly”.
2. Remove the optical base top following to “Optical Unit Disassembly”. 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 extremely dirty areas using a cloth moistened with alcohol.
Caution:
The surface of the optical components consists of multiple 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 circuit, never use any liquids (water, etc.) to clean the unit. Use
of liquid may cause the unit to malfunction.
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.
Maintenance
Turn off the projector, press the Main On/Off Switch to Off and unplug
the AC power cord from the AC outlet before cleaning.
Gently wipe the projection lens with a cleaning cloth that contains a
small amount of non-abrasive camera lens cleaner, or use a lens clean-
ing paper or commercially available air blower to clean the lens.
Avoid using an excessive amount of cleaner. Abrasive cleaners, sol-
vents, or other harsh chemicals might scratch the surface of the lens.
Cleaning the Projector cabinet
Turn off the projector, press the Main On/Off Switch to Off and unplug
the AC power cord from the AC outlet before cleaning.
Gently wipe the projector body with a soft dry cleaning cloth. When the
cabinet is heavily soiled, use a small amount of mild detergent and finish
with a soft dry cleaning cloth. Avoid using an excessive amount of clean-
er. Abrasive cleaners, solvents, or other harsh chemicals might scratch
the surface of the cabinet.
When the projector is not in use, put the projector in an appropriate car-
rying case to protect it from dust and scratches.
Cleaning the Projection lens

-17-
This projector provides security functions such as "Key lock", "PIN code lock" and "Logo PIN code lock". When the
projector 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.
Security Function Notice
Resetting procedure
1Turn off the projector with the Mains switch.
2As pressing the SELECT button on the projector, turn on the projector with the Mains switch. 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 side control or the remote con-
trol.
If the Key lock is enabled with side 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 on the screen.
Initial code: “4321”

-18-
Lens Mounting
- 1 -
LCD PROJECTOR Model No. LC-HDT2000 LENS REPLACEMENT AND INSTALLATION PROCEDURE
Be sure to consult with a qualified service personnel.
When installing or replacing the Projection Lens, refer to this manual. For installation of the lens, use the parts specified in this manual. Do not use the installation manual and Light-Block Plates in the optional lens package. Check the following parts supplied to this projector.
LENS INSTALLATION PRECAUTIONS
L
Lens installation and replacement should be made by a qualified service personnel.
LBe sure to install the lens by following this procedure precisely. LDo not touch or remove any parts except the lens and related parts. It may result in
malfunctions, electrical shock, fire hazard or other accidents.
LBefore installing or replacing the lens, check that the Part No. of the Projection Lens
matches to the projector.
LWhen moving or setting up the projector, be sure to replace the Lens Cover to protect
the surface. And be careful not to hold or subject the lens to strong forces. Otherwise the lens, cabinet, or mechanical parts may damage.
LFor details of the lens and installation, contact the sales dealer where you purchased
the projector.
AVAILABLE LENS
3 types of Light -Block Plates Lens Attachment 3 types of Spacers
2 types of Safety Clamps
THE OPTIONAL LENSES BELOW ARE NOT APPLICABLE FOR LC-HDT2000. LENS PART NO. : AH-32501, AH-32701 AH-21041, AH-21101, AH-21102, AH-21022, AH-21023
Part No. Code No. Type Zoom Focus
AH-21012 LNS-W01Z Wide Fixed Lens Fixed Manual
AH-21202 LNS-W02Z Wide Zoom Lens Motor Driven Motor Driven
AH-32021
AH-32022
LNS-W03 LNS-W03E On-Axis Wide Fixed Lens Fixed Manual
AH-32401 LNS-W04 Wide Zoom Lens Motor Driven Motor Driven
AH-32601 LNS-W06 Wide Zoom Lens Motor Driven Motor Driven AH-22051 LNS-S03 Standard Zoom Lens IMotor Driven Motor Driven AH-21401 LNS-S04 Standard Zoom Lens II Motor Driven Motor Driven AH-22221 LNS-M02 Semi-Long Zoom Lens Motor Driven Motor Driven AH-21031 LNS-T01
LNS-T01Z Fixed Long Throw Lens Fixed Manual
AH-21091 AH-21092
LNS-T02 LNS-T02E Long Zoom Lens Motor Driven Motor Driven
AH-32581 LNS-T03 Ultra-Long Zoom Lens Manual Manual
- 2 -
The installation procedure and needed parts for lens installation varies on Optional Lens. Check the Part No. of the Optional Lens and be sure to install or replace the lens by following the procedure below.
LENS REPLACEMENT AND INSTALLATION PROCEDURE
Fig. 3
3Remove 2 Screws A. Slide the Top Cover
forward to take off. (See Fig. 3)
Focus Lens Lock Screw
Locate the Motor on right side.
Lens Attachment
Part No. (610 275 6029)
Connector
Lens Motor Lead Fig. 2
Lens Attachment
Socket
1Remove the safety lens cap on the front and
rear of the lens (mounting side). Insert the Lens Attachment and secure with the four (4) screws (supplied). (See Fig. 1)
Screw Driver (supplied with the optional lens)
Fig. 1
Connect the Lens Motor Lead to the socket on the top right of the Lens Attachment. (Motor Driven Lens only) (See Fig. 2)
2Turn off the projector, press the Main On/Off
Switch to Off and unplug the AC power cord from the AC outlet.
AA
Top Cover

-19-
Lens Mounting
- 3 -
4Remove the Cover Plate by lifting upwards.
(See Fig. 4)
5This projector can use three (3) different types
of Light-Block Plates, use the Light-Block Plate that corresponds to the appropriate optional lens. (Refer to the list below.)
NOTE: LMake sure the shape of the Light-Block Plate is
correct.
L
Make sure the mark (UP/DOWN and FRONT/BACK) on Light-Block Plates are correct and set them properly.
L
Use two (2) Light-Block Plates for AH-32021/AH-32022.
Light-Block Plate for each Lens
Light-Block Plate
Type No. (PART No.)
Lens Part No.
Type FK2A (610 337 0064)
AH-21012, AH-32401, AH-32601, AH-22051, AH-21401, AH-22221, AH-21031 AH-32581
Type FK2B (610 337 0224)
AH-21202, AH-32021, AH-32022, AH-21091, AH-21092
(610 335 4545) AH-32021, AH-32022
6Insert the lower Light-Block Plate. (See Fig. 5.)
7Grasp (release lock) the Lens Lock Lever and
turn it fully upward. (See Fig. 6) Install the Lens into the projector. Grasp the Lens Lock Lever and turn the Lever fully downward until lever is Locked (clicked position) properly. (See Fig. 7) When installing the Motor Driven Lens, be sure to mount Lens Motor on right side. (See Fig. 1)
After installing the lens, make sure the lens is
not loose and properly installed.
Fig. 6 Fig. 7
LENS LOCK RELEASE LENS LOCK
NOTE: LThe Light-Block Plate FK2A and FK2B are separated
to the upper and lower plates.
Lower Plate
Upper Plate
DOWN
UP
Cover Plate
Fig. 4
Fig. 5
Grasp (unlock) Lens Lock Lever and pull upward.
Grasp (unlock) Lens Lock Lever and fully pull downward until it is locked (clicked).
- 4 -
Safety Clamp
Type No. (PART No.)
Lens Part No.
Type SC-A (610 322 3759)
AH-21012, AH-21202, AH-32021, AH-32022, AH-32401, AH-32601, AH-22051, AH-21401, AH-22221, AH-21091, AH-21092, AH-32581, AH-21031
Type SC-B (610 322 3742)
NONE
1
Remove the screw holding the lens. (See Fig.8-1)
2Insert the removed screw to the Safety Clamp.
3Place the Safety Clamp in the location of the
removed screw. Make sure that the Safety Clamp is mounted to hold the Lens Lock Lever in the lock position. Check the placement of the Safety Clamp. (See Fig. 8-2)
Set up the projector and project image on a
screen. Loosen the Focus Lens Lock Screw and rotate the Projection Lens to obtain proper focus. After adjusting focus, be sure to lock the Projection Lens with the Focus Lens Lock Screw securely. (See Fig. 1)
Adjust focus of the Projection Lens Part No.
AH-32021
and
AH-32022
following the Focus
Adjustment on page 6.
9
Adjust focus of the Projection Lens. (AH-21012, AH-32021 and AH-32022 only.)
Safety Clamp (SC-A) Part No. (610 322 3759)
Screw
Lens Lock Lever
Lens Lock Lever
Safety Clamp
Safety Clamp Attached Figure
Fig. 8-1
Fig. 8-2
Safety Clamp (SC-A) Part No. (610 322 3759)
9To ensure that the lens is securely fixed to the
projector when mounting, be sure to attach the provided Safety Clamp. There are two different types of Safety Clamps depending on the lens of the projector. Check the Part No. of the lens before attaching the Safety Clamp and use a Safety Clamp that matches to the lens.

-20-
Lens Mounting
- 5 -
Fig. 10
10 Install the Upper Light-Block Plate into
the guide of Lower Light-Block Plate. (See Fig. 9)
Note: LWhen installing the Upper Light-Block Plate, the
Lower Light-Block Plate should be lifted upward with your hand.
L
Make sure the mark (UP/DOWN and FRONT/BACK) on Light-Block Plate is correct and set them properly.
11
Replace and fix the Top Cover with two (2) screws A. (See Fig. 10)
When using AH-32021/AH-32022
- When installing
AH-32021
/AH-32022, use two (2)
Light-Block Plates. Make sure the figure is correct and put in proper position. (See Fig.11)
7Before mounting the Light-Block Plate (No. 610
335 4545), turn the projector on and move the projected image to the most upper left with the lens shift function. Then turn the projector off.
<Insert the Light-Block Plate (No. 610 335 4545)
in the direction shown in the figure to the right. The Light-Block Plate should encircle the lens. Rotate the Light Block Plate counter clockwise until the convex side is in a downward position.
Note: The side with "THIS SIDE BACK" must face backward.
Fig. 9
Fig. 11
NO. 610 335 4545 (On front of FK2B)
TYPE FK2B
Upper PlateLower Plate
12 Turn the projector on and operate Lens
shift, Zoom and Focus fully to check the Light-Block Plates. If Light-Block Plate interferes with those operations, check the Light-Block Plate is set properly.
CAUTION : Do not operate the projector with Light-Block Plate removed. Doing so may result in malfunction of the projector.
AA
Top Cover
- 6 -
Focus Lock Screw
Focus Lock Ring
Lmark (yellow)
FOCUS ADJUSTMENT
Set up the projector and project image on the screen. 1. Loosen the Focus Lock Screw on the lens. 2. Rotate the lens to obtain proper focus on center
area of the screen.
When the distance between the screen and lens is 1
meter, set Lmark (yellow) of the lens on Focus Lock Screw position. 3. Lock the Focus Lock Screw securely. When proper focus is not observed at outer area of the screen, proceed the following adjustments. 4. Loosen the Focus Lock Ring on the lens. (Turn the
Lock Ring counter-clockwise.)
5. Rotate the lens to obtain proper focus on outer area
of the screen.
6. Lock the Focus Lock Ring securely. (Turn the Lock
Ring clockwise.)
If proper focus is not observed over the entire screen, repeat above adjustments 1~ 6. AH-32021 and -AH32022
Adjust zoom first and then adjust focus. AH-32581
Rotate this part of the lens to obtain proper zoom.
Rotate this part of the lens to obtain proper focus.
1. Loosen the Focus Lock Screw on the lens. 2. Rotate the lens to obtain proper focus on center
area of the screen.
3. Lock the Focus Lock Screw securely.
Focus Lock Screw
Rotate this part of the lens to obtain proper focus.
AH-21012