Panasonic PT-VX400U User manual

Model No. PT-VX400U
PT-VX400E
PT-VX400EA
© Panasonic Corporation 2011. Unauthorized
copying and distribution is a violation of law.
LCD Projector
ORDER NO. VED1108403CE
D10

-2-
Contents
Contents ........................................................................ 2
Safety Instructions ......................................................... 3
Safety precautions ...................................................... 4
Specifications ................................................................ 5
Circuit Protections ......................................................... 7
Thermal fuse (SW902) ............................................... 7
Lamp cover switch (SW901)....................................... 7
Fuse (F601) ................................................................ 7
Warning temperature and power failure protection..... 8
Maintenance.................................................................. 9
Maintenance ............................................................... 9
Replacing the unit....................................................... 9
Replacing the lamp unit ............................................ 12
Warning message on the non-standard lamp used.. 13
Cleaning ................................................................... 14
Cleaning the projection lens ..................................... 14
Cleaning the projector cabinet.................................. 14
Security Function Notice.............................................. 15
Resetting procedure ................................................. 15
Standby Mode Notice .................................................. 16
Mechanical Disassembly ............................................. 17
Optical Parts Disassembly........................................... 23
Servicing Notice .......................................................... 28
Note on main board replacement ............................. 28
Adjustments................................................................. 29
Optical Adjustments..................................................... 30
Contrast adjustment.................................................. 30
Optical center adjustment......................................... 31
Electrical Adjustments ................................................. 34
Service adjustment menu operation ......................... 34
Circuit adjustments ................................................... 35
Test points and locations .......................................... 39
Service adjustment data .......................................... 40
Chassis Block Diagrams.............................................. 57
Chassis over view..................................................... 57
System control.......................................................... 58
Lamp control............................................................. 59
Audio circuit .............................................................. 60
Power supply & protection circuit.............................. 61
Fan control circuit ..................................................... 62
Troubleshooting ........................................................... 63
Indicators and projector condition............................. 63
No power .................................................................. 64
No picture ................................................................. 65
No sound .................................................................. 66
Control Port Functions................................................. 67
Scaler I/O port functions (PW190)............................ 67
IC Block Diagrams....................................................... 68
Parts Location Diagram ............................................... 74
Mechanical Parts List .................................................. 81
Electrical Parts List...................................................... 82
Schematic Diagrams ...................................................A1
Printed Wiring Board Drawings....................................A7

-3-
Safety Instructions
The service technician is required to read and follow the “Safety Precautions” and “Important Safety Notice” in this service manual.
CAUTION
Precaution
About lead free solder (PbF)
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It dose not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
WARNING : Use UV Radiation eye and skin protection during servicing
If using of this projector at high altitudes (above 1,400m), set HIGHT ALTITUDE MODE to “ON”.
(Refer to “PROJECTOR SETUP menu” in Operating Instructions.)
Failure to observe this may cause malfunctions. Never use this projector at an altitude of 2,700m or higher.
Using this projector at high altitude, consult your dealer or Authorized Service Center about preparations.
This projector is using the P.C.Board which applies lead free solder.
Use lead free solder in servicing from the standpoint of antipollution for the global environment.
Notes:
・Lead free solder: Sn-Ag-Cu (tin, silver and copper) has a higher melting point (approx. 217°C) than standard solder. Typically the melting point
・is 30~40 °C higher. When servicing, use a high temperature soldering iron with temperature limitation function and set it to 370 ± 10 °C.
・Be precautious about lead free solder. Sn-Ag-Cu (tin, silver and copper) will tend to splash when heated too high (approx. 600°C or higher).
・Use lead free solder for the P.C.Board (specified on it as “PbF”) which uses lead free solder. (When you unavoidably use lead solder, use lead
・solder after removing lead free solder. Or be sure to heat the lead free solder until it melts completely, before applying lead solder.)
Aft ld i t d bl l d P C B d h k th t id f ld hi h fl t th it id
2
For US
WARNING:
CAUTION : Any unauthorized changes or modifications to this equipment will void the users authority to operate.
There are special parts used in Panasonic LCD Projectors which are important for safety. These parts are shaded on the schematic
diagram. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or other
hazards. Do not modify the original design without permission of PANASONIC SOLUTIONS COMPANY.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment dose cause harmful interference to radio or television reception, which can be determined by turning the equipment
off and on, The user is encouraged to try to correct the interference by one or more of the following measures.
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
・After soldering to double layered P.C.Boards, check the component side for excess solder which may flow onto the opposite side.
About the identification of the lead free solder P.C.Board.
For the P.C.Board which applies lead free solder, the symbol as shown in the figure below is printed or stamped on the surface
or the back of P.C.Board.
IMPORTANT SAFETY NOTICE
2

-4-
Safety Instructions
<PT-FW430U/PT-FW430E/PT-FW430EA/PT-FX400U/PT-FX400E/PT-FX400EA>
1. Safety Precautions
1.1. General Guidelines
1.2. Leakage Current Check
1. Prepare the measuring circuit as shown in Fig.1.
Be sure to use a voltmeter having the performance described in Table 1.
2. Assemble the circuit as shown in Fig. 2. Plug the power cord in a power outlet.
3. Connect M1 to T1 according to Fig. 2 and measure the voltage.
4. Change the connection of M1 from T1 to T2 and measure the voltage again.
5. The voltmeter must read 0.375 V or lower in both of steps 3 and 4. This means that the current must be 0.75mA or less.
6. If the reading is out of the above standard, the projector must be repaired and rechecked before returning to the customer
because of a possibility of an electric shock.
- For continued safety, no modification of any circuit must be attempted.
- Unplug the power cord from the power outlet before disassembling this projector.
- Use correctly the supplied power cord and must ground it.
- It is advisable to use an isolation transformer in the AC power line before the service.
- Be careful not to touch the rotation part (cooling fan, etc.) of this projector when you service with the upper
case removed and the power supply turned ON.
- Observe the original lead dress during the service. If a short circuit is found, replace all the parts overheated
or damaged by the short circuit.
- After the service, all the protective devices such as insulation barriers, insulation papers, shields, and isolation
R-C combinations must be properly installed.
- After the service, check the leakage current to prevent the customer from getting an electric shock.
4
1.3. UV Precaution and UHM Lamp Precautions
- Be sure to unplug the power cord from the power outlet when replacing the lamp.
- Because the lamp reaches a very high temperature during its operation, wait until it cools completely when replacing
the Lamp Unit.
- The lamp emits small amounts of UV-radiation, avoid direct-eye contact with the light.
- The lamp unit has high internal pressure. If improperly handled, explosion might result.
- Because the high pressure lamp involves a risk of failure, never touch the lamp wire lead during the service.
Fig. 1 Fig. 2
Table. 2
Safety precautions

-5-
Specifications
Model No. PT-VX400U / E / EA
Power supply AC100 V - 240 V 50 Hz/60 Hz
Power consumption
100 V - 240 V 3.8 A-1.8 A 350 W
When [Standby mode] of [Setting] is set to [ECO]: 0.48W
When [Standby mode] of [Setting] is set to [Network]: 10.0W
When [Standby MIC out] of [Sound] is set to [On]: Max.26 W
LCD panel
Panel size 1.6 cm(0.63”)
(aspect ratio 4 : 3)
Display method 3 transparent LCD panels (RGB)
Drive method Active matrix method
Pixels 789 432
(1 024 x 768) x 3 panels
Lens Manual zoom (1.6x) / Manual focus
F 1.65 to 2.33, f 15.47 mm to 24.53 mm
Luminous lamp 245 W UHP lamp
Light output *1 4000 lm (ANSI)
A p p l i c a -
ble scan-
ning fre-
quency *2
for RGB signal Horizontal 15 kHz to 100 kHz, Vertical 50 Hz to 100 Hz
Dot clock frequency: 140 MHz or less
for YPBPR signal
[525i(480i)] Horizontal 15.75 kHz, Vertical 60 Hz
[525p(480p)] Horizontal 31.5 kHz, Vertical 60 Hz
[750(720)/60p] Horizontal 45 kHz, Vertical 60 Hz
[1125(1080)/60i] Horizontal 33.75 kHz, Vertical 60 Hz
[625i(576i)] Horizontal 15.63 kHz, Vertical 50 Hz
[625p(576p)] Horizontal 31.25 kHz, Vertical 50 Hz
[750(720)/50p] Horizontal 37.5 kHz, Vertical 50 Hz
[1125(1080)50i] Horizontal 28.13 kHz, Vertical 50 Hz
• HD/SYNC and V terminals are not compliant with 3 value composite SYNC
forVideo signal (in-
cluding S-Video) Horizontal 15.75 kHz / 15.63 kHz, Vertical 50 Hz / 60 Hz
for HDMI signal
525p(480p), 625p(576p), 750(720)/60p, 750(720)/50p, 1125(1080)/60p,
1125(1080)/50p, 1125(1080)/60i, 1125(1080)/50i
• Displayable resolution: VGA to WUXGA (non-interlace)
• Dot clock frequency: up to 162 MH
Color system 7 (NTSC, NTSC4.43, PAL, PAL-N, PAL-M, SECAM, PAL60)
Projection size 0.76 m-7.62 m(30”-300”)
Screen aspect ratio 4 : 3
Projection scheme Front / Rear / Mount on Ceiling / Floor (Menu setting system)
Speaker 1 (3.7 cm round-type)
Maximum usable volume out-
put 10W
Contrast ratio *1 2000 : 1 (all white / all black)
*1: Measurement, measuring conditions and method of notation all comply with ISO21118 international standards.
*2: For details of video signals that can be projected using this projector, refer to “List of compatible signals”.

-6-
Specifications
Model No. PT-VX400U / E / EA
Termi-
nals
COMPUTER IN 1
/COMPONENT IN
1 (D-sub 15 pin female)
[RGB signal] 0.7 V [p-p] 75 Ω(When G-SYNC: 1.0 [p-p] 75 Ω
HD/SYNC TTL high impedance, automatic positive/nega-
tive polarity compatible
VD TTL high impedance, automatic positive/negative polar-
ity compatible
[YPBPRsignal] Y: 1.0 V [p-p] including synchronization signal, PBPR: 0.7 V
[p-p] 75 Ω
COMPUTER IN 2
/MONITOR OUT
[RGB signal] 0.7 V [p-p] 75 Ω(When G-SYNC: 1.0 [p-p] 75 Ω
HD/SYNC TTL high impedance, automatic positive/nega-
tive polarity compatible
VD TTL high impedance, automatic positive/negative polar-
ity compatible
VIDEO IN 1 (RCA pin jack 1.0 V [p-p] 75 Ω)
S-VIDEO IN 1 (Mini DIN 4 pin, Y 1.0 V [p-p], C 0.286 V [p-p] 75 Ω, S1 signal compatible)
HDMI IN 1 (HDMI 19 pin, HDCP and Deep color compatible)
AUDIO IN 2 (M3 stereo mini jack, 0.5 V [rms], input impedance 22 kΩand more)
1 (RCA pin jack x 2 (L-R), 0.5 V [rms], input impedance 22 kΩand more)
AUDIO OUT 1 (M3 stereo mini jack, stereo monitor output compatible,
0 V [rms] to 2.0 V [rms] valuable, output impedance 2.2 kΩand less)
CONTROL PORT 1 (D-sub 9 pin, RS-232C compliant, for computer control use
LAN 1 (for RJ-45 network connection, PJLink compatible,)
Power cable length 2.0 m(78 3/4”)
Cabinet Molded plastic
Dimensions
Width: 350 mm (13.78”)
Height: 97.0 mm (3.82”) (when front adjustable feet shortened)
Depth: 276.9 mm (10.9”) (excluding protractions)
Weight Approx.3.5 kg(7.72 lbs.) *3
Operating environment Operating environment temperature : 5 °C (41 °F) to 35 °C (95 °F)
Operating environment humidity: 20 % to 80 % (no condensation)
Remote
control
Power supply DC 3 V (battery (AAA/R03) x 2)
Operating range Approx. 5 m (196.9”) (when operated directly in front of receptor)
Weight 67 g (2.36 ozs.) (including batteries)
Dimensions Width : 52 mm (2.05”), Length : 110 mm (4.33”), Height : 18 mm (0.71”)
*3: This is an average value. It may differ depending on individual product.
• The part numbers of accessories and separately sold components are subject to change without notice.

-7-
Lamp cover switch (SW901)
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 assy, place the
lamp cover correctly otherwise the projector can not turn on.
Thermal fuse (SW902)
There is a thermal fuse (SW902) inside of the projector to detect the
internal temperature rising abnormally. When the internal tempera-
ture around lamp reaches near 113˚C, the thermal fuse will open to
cut off the power supply to the lamp power circuit.
If the thermal fuse opens, the projector cannot turn on. Thermal
fuse replacement is required.
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.
Fuse
Circuit Protections
Fuse (F601)
A fuse is located inside of the projector. When the POWER indica-
tor is not lighting, the fuse may be opened. Check the fuse as fol-
lowing steps.
The fuse should be used with the following type;
Fuse Part No.: 323 021 7804
TYPE T6.3AH 250V FUSE
LITTEL FUSE INC. TYPE 21506.3
or
How to replace the fuse
1. The fuse is placed on the filter board. Remove the cabinet top
following the "Mechanical Disassembly" .
2. Take the fuse off from the fuse holder, and replace the new one
with the specified type.
Fuse Part No, : 423 034 4101
TYPE T6.3AH 250V FUSE
Hollyland Co, Ltd. TYPE 50CT063H
Thermal fuse (SW902)
Lamp cover switch
(SW901)

-8-
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.
Warning temperature and power failure protection
The projector is shut down and the WARNING indicator lights red.
When the projector detects an abnormal condition, it is automatically 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.
WARNING
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD CONNECTED UNDER AN
ABNORMAL CONDITION. IT MAY RESULT IN FIRE OR ELECTRIC SHOCK.
4 Note:
- 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” and "Fan control circuit" in the
Chassis Block Diagram section.
When the temperature inside the projector reaches a certain level, the projector will be automatically shut down to
protect the inside of the projector and the WARNING and POWER indicators start blinking. When the projector has
cooled down enough (to its normal operating temperature), the POWER indicator stops blinking and lights red, The
projector can be turned on again by pressing the ON/STAND-BY button.
4 Note:
The WARNING indicator continues to blink even after the temperature inside the projector returns to normal. When
the projector is turned on again, the WARNING indicator stops blinking.
Check items
- 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 (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)
The projector is shut down and the WARNING indicator is blinking red.
LED indicator
WARNING
indicator
POWER
indicator

-9-
Maintenance
nOuter Case
Wipe off dirt and dust using a soft dry cloth.
• If the dirt is persistent, soak the cloth with water and wring it thoroughly before wiping. Dry off the projector with a
dry cloth.
• Do not use benzene, thinner, or rubbing alcohol, other solvents, household cleaners, or chemical treated dusters.
Using them may cause deterioration of the outer case.
nFront glass surface of the lens
Wipe off the dirt and dust off the front surface of the lens with soft clean cloth.
• Do not use a cloth that has an abrasive surface or a cloth that is moist, oily, or covered with dust.
• Do not use excessive force when wiping the lens as it is fragile.
Attention
The lens is made of glass. Impacts or excessive force when wiping may scratch its surface.
Please handle with care.
nAir filters
Perform the maintenance of the air filter units in following cases. If a “Filter warning” icon appears on the screen,
replace the filters immediately.
• The filter mesh is blocked, causing the filter warning icon appears on the screen and the <WARNING Indicator>
to light in red.
• The filter mesh is blocked, causing the internal temperature to rise, the <POWER Indicator> to light, and the
power to shut off. (When the power is shut off, the <POWER Indicator> blinks in red and the <WARNING Indica-
tor> blinks faster than usual.)
Before replacing the unit
When you perform maintenance or replacement of the parts, make sure to turn off the power and disconnect the
power plug from the wall outlet.
Maintenance
Air filter units
Filter prevents dust from accumulating on the optical ele-
ments inside the projector. Should the filter 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, replace the filters immediately.
nReplacement of the air filter units
1) Remove the air filters.
• Turn over the projector and pull out the filter cover (bot-
tom); pull up the handle and take out the whole filter
(bottom.)
Press up the latches and pull out the filter cover (side);
pull out the handle and take out the side filter.
2) Replace the air filter units.
• Put new filters back into the position. Make sure that the
filters are fully inserted to the projector.
Replacing the unit
Handle (pull up)
Filter cover (bottom)
Filter cover (side)
Latches (press up)
Handle (pull up)
Air Filter set : ET-RFV100 (Side Filter and Bottom Filter)
* Distribution through commercial channel.

-10-
Maintenance
nFilter counter reset
After replacing the filter, be sure to reset the filter coun-
ter.
1) Press st to select [Filter counter reset].
2) Press the <SELECT> button.
[Filter counter Reset?] appears. Select Yes to con-
tinue. Another confirmation dialog box appears, select
Yes to reset the Filter counter.
Attention
• Turn off the power before you replace the air filter unit.
• When attaching the air filter unit, make sure that the
projector is stable, and work in an environment that is
safe, even in the event of the air filter unit dropping.
• Do not operate the projector with the filters removed.
Dust may accumulate on the optical elements degrad-
ing picture quality.
• Do not put anything into the air vents. Doing so may
result in malfunction of the projector.
• Do not wash the filters with water or any other liquid
matter. Otherwise the filters may be damaged.
nAttaching the filter cover to the projector
The supplied filter cover is designed for preventing dust accumulation on the filter when mounting the projector on
the ceiling.
1) Turn over the projector.
2) Remove the filter cover (bottom).
3) Attaching the filter cover (supplised) to the projector.
4) Attach the projector to the ceiling mount in accor-
dance with the instruction manuals which come with
the ceiling mount.
Attention
• Please keep the filter cover (bottom) for later use.
• If the Projector Mount Base (ET-PKV100B) is applied, the
supplied filter cover is unnecessary.
To ceiling mount
Filter cover
(suppiesed)

-11-
Maintenance
nLamp unit
The lamp unit is a consumable component.You can check the total usage time using Lamp runtime in the Information
menu.
It is recommended to ask an authorized engineer to replace the lamp unit. Contact your dealer.
Consult your dealer to purchase a replacement lamp unit (ET-LAV100, dealt as a service parts).
CAUTION:
nDo not replace the lamp unit when it is hot. (Wait at least 45 minutes after use.)
The inside of the cover can become very hot, take care to avoid burn injuries.
nNotes on the replacement of the lamp unit
• The luminous source of the lamp is made of glass and may burst if
you hit it against a hard surface or drop it.
Please handle with care.
• A Phillips screwdriver is required for replacement of the lamp unit.
• When replacing the lamp unit, be sure to hold it by the handle. Hold
the lamp unit horizontally while replacing it to prevent fragments of
glass from scattering, in case the lamp breaks. When the projector
is mounted on a ceiling, do not work directly under the projector or
put your face close to the projector. Pull the old lamp unit out hori-
zontally.
• The lamp contains mercury. Consult your local municipality or your
dealer about correct disposal of used lamp units.
Attention
• Do not use other than designated lamp units.
• The part numbers of accessories and separately sold components are subject to change
without notice
nWhen to replace the lamp unit
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.
On screen
Lamp replacement icon
LAMP REPLACE indicator
LAMP
Over 3000 hours
The message is displayed for 10 seconds. If
you press any button within the 10 seconds,
the message disappears. Lights in yellow (even in stand-by
mode).
Over 3200 hours After ten minutes, the projector shuts off the
power automatically
Note
• Allow a projector to cool enough before you open the lamp cover. The inside of the projector can become very hot.
• The Lamp replacement icon will not appear when the display function is set to Off, or during Freeze, or AV mute.

-12-
Replacing the lamp unit
Maintenance
CAUTION:
• When the projector is mounted on a ceiling, do not work with your face close to the projector.
• Attach the lamp unit and the lamp cover securely.
• When you experience difficulty in installing the lamp, remove it and try again. If you use force to install the lamp, the
connector may be damaged.
1) Turn off the projector. Unplug the AC power cord.
Wait at least 45 minutes and make sure the lamp unit
and surroundings are cool.
2) Use a Phillips screwdriver to loosen the lamp cover
fixing screw and remove the lamp cover.
• Remove the lamp cover by pulling it slowly toward the
direction of the arrow.
3) Use a Phillips screwdriver to loosen the lamp unit
fixing screws until the screws turn freely. Hold the
used lamp unit by its handles, and pull it gently from
the projector.
4) Insert the new lamp unit in correct direction.Tighten
the three lamp unit fixing screws securely with a
Phillips screwdriver
5) Attach the lamp cover, and tighten the lamp cover
fixing screw securely with a Phillips screwdriver.
Note
• When you replace the new lamp unit, the projector resets
the total usage time of the lamp unit automatically.
Lamp cover
Handle
Lamp unit fixiing screws
Lamp
Lamp cover
fixing screw

-13-
Maintenance
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) = Tnormal + Teco x 0.67 + Tauto x k*
Tnormal : used time in the normal mode
Teco : used time in the eco1 and eco2 mode
Tauto : used time in the auto mode
* Factor k is changed from 0.67 to 1.0 automatically depending on the input signal
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 remote control for more than 20 seconds.
2 The projector used time and lamp used time will be displayed on the screen briefly as follows.
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.
Since the lamp is not standard,
projector failed to read lamp data.
Continue to use this lamp?
Yes
No
Warning message on the non-standard lamp used
Counter
Projector 850H
Lamp
Auto 200H
Normal 150H
Eco1 250H
Eco2 250H
Corresponding value 610H
Total lamp used time
Projector used time
Cumulative
lamp operating
time in each
mode.

-14-
Maintenance
Cleaning
Cleaning the projection lens
Unplug the AC power cord 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 cleaner. 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 carrying
case to protect it from dust and scratches.
Cleaning the projector cabinet
Cleaning with air spray
Remove the cabinet top following to “Mechanical Disassembly”. 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 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
sufficiently 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.
Unplug the AC power cord 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 cleaning paper or
commercially available air blower to clean the lens.
Avoid using an excessive amount of cleaner. Abrasive cleaners, solvents, or
other harsh chemicals might scratch the surface of the lens.
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.

-15-
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
1 Disconnect the AC power cord from the AC outlet.
2. As pressing the SELECT button, connect the AC power cord into an AC outlet again.
3. Keep pressing the SELECT button and then press the ON/STAND-BY button.
4. Release the ON/STAND-BY button first and then release the SELECT button.
- The PIN code lock and Logo PIN code lock will be 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 pro-
jector 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”
Resetting procedure

-16-
Standby Mode Notice
Function Eco Network
Serial command control 4*1 4
Network Function -- 4
Monitor Out -- 4
Audio Out -- --
Mic Out (MIC Volume) -- 4 *2
Direct on 4 4
This projector provides 2 types of standby mode, Eco standby and Network standby. According to the standby mode
"Eco" or "Network", several functions are restricted as shown in the table below. To change the standby mode, use
the projector's menu "Setting".
Network ..........Supply the power to the network function even after turning off the projector.You can turn on/ off the
projector via network, modify network environment, and receive an e-mail about projector status
while the projector is powered off.
Eco .................Select “Eco” when you do not use the projector via network. The projector’s network function will
stop when turning off the projector.
When "Eco" is selected, several functions will be restricted.
Restricted Function in the standby mode
*1 Effective only power-on command.
*2 MIC volume can be output when the Standby MIC Out function is set to On.

-17-
1. Cabinet top, cabinet front 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
B
RC board
Fig.1
Cabinet top
1. Pull up two latches to take off the filter cover(side).
2. Loosen 1 screw-A to remove the lamp cover.
3. Remove 6 screws-B (M3x8) and 1 screw C-(M3x8) to remove the cabinet top.
4. Remove 4 screws-D (M3x8) and 3 screws-E (T3x8) to remove the cabinet front.
Control buttons
Lamp cover
A
B
B
D
D
D
F
Dec inlay LED
Cabinet front
B B
B
F(T3x8)x2
E
E
E
C
Filter cover(side)
Latches
D

-18-
Mechanical Disassembly
AV panel
1. Remove 3 screws-A (T3x8) to remove the fans (FN904 and FN905).
2. Remove 3 screws-B (M2.5x6) and 2 screws-C (M3x8) to remove the main
board assy.
3. Release the hooks to remove the AV panel, remove 3 screws-D (T3x6) and
2 hex screws E to remove the AV board.
Fig.2
B
C
AV board
A
Fan holder
FN904
A
A
B
B
D
DD
Main board E
EHooks
FN905
Fan shield
Label side
SW901
Stopper
C
2. Main board, AV board and fans(FN904 and FN905) removal

-19-
Mechanical Disassembly
1. Remove the 2 screws-A(T3x12) to remove the speaker holder. Remove the 2
screws-B(T3x8) to remove the speaker(SP901).
2. Loosen 3 screws-C to remove the lamp assy (LP900).
3. Remove 4 screws-D (T3x8) to remove the optical unit.
4. Remove 3 screws-E (T3x8) and 1 screw-F(M3x8) to remove the lamp holder.
Remove 2 screws-G(T3x6) to remove the ID connect board.
5. Remove 2 screws-H(T3x8) to remove the sub power board.
6. Remove 3 screws-K (M3x8) and 1 screw-J (T3x8) to remove the AC filter board.
Fig.3
Optical Unit
F
Lamp assy
(LP900)
C
ID connect board
C
E
B
Speaker holder
B
Speaker
(SP901)
C
D
D
DD
G G
H
H
K
K
K
Sub power
board
AC Filter board
Bushes
E
A
A
J
Inside light
shield
Outside
light shield
(T3x8)x2
E
Lamp
holder
Note:
When removing screws-G which is to
fix the ID connect board, the special
screwdriver is needed as the below;
Star screwdriver Size: T10
3. Speaker(SP901), lamp assy(LP900), optical unit removal

-20-
Mechanical Disassembly
4. Fan (FN906) , thermal fuse (SW902) and power board removal
Fig.4
1. Remove 2 screws-A (T3x8) to remove the cabinet front holder. Remove 1 screw-B
(T3x8) to remove the thermal fuse (SW902).
2. Remove 2 screws-C(T3x8) to remove the lamp fan duct assy.
3. Remove 1 screw-D (T3x8) and 2 screws-E (T3x8) to remove the lamp socket and
socket plug.
4. Remove 2 screws-F (T3x8) and 1 screw-G (M3x8) to remove the ballast board &
shield assy.
5. Remove 2 screws-H (T3x8) and 2 screws-J (M3x8) to remove the power board.
AAB
C
D
EE
Lamp
socket
Socket plug
Insulation sheet
Ballast board
Power board
F
FG
H
H
J
2 hooks
Ballast holder
Lamp fan holder
FN906
Lamp fan duct
Shield
Cabinet front holder Thermal fuse
(SW902)
Lamp fan duct assy
J
C
T3x8
(T3x12)x2
Ballast board &
shield assy
T3x8