Sanyo PLC-WU3800 User manual

Multimedia Projector
SERVICE MANUAL Model No.PLC-WU3800
U.S.A, Canada,
Europe, U.K, Asia
Brazil
Original Version
FILE NO.
PRODUCT CODE
PLC-WU3800
1 122 457 40 (KY7AF)
1 122 457 44 (KY7EF)
1 122 458 40 (LY7AF)
1 122 458 42 (LY7CF)
1 122 458 43 (LY7DF) REFERENCE NO. SM5111352-00
Chassis No. KY7-WU380000
Match the Chassis No. on the rating label of the projector
with the Chassis No. in the Service Manual.
If the Original Version Service Manual Chassis No. does
not match, additional Service Literature is required. You
must refer to “Notices” to the Original Service Manual
prior to servicing.

-2-
Contents
SERVICE MANUAL....................................................... 1
Contents ........................................................................ 2
Safety Instructions......................................................... 3
Safety Precautions ..................................................... 3
Product Safety Notice................................................. 3
Service Personnel Warning ........................................ 3
Specifications ................................................................ 4
Circuit Protections ......................................................... 5
Thermal switch ........................................................... 5
Lamp cover switch...................................................... 5
Fuse............................................................................ 5
Warning temperature and power failure protection .... 6
Maintenance.................................................................. 7
Cleaning the Filter ...................................................... 7
Resetting the Filter Counter........................................ 7
Lamp Replacement .................................................... 8
Resetting the Lamp Counter....................................... 9
How to check Lamp Used Time.................................. 9
Cleaning ................................................................... 10
Security Function Notice.............................................. 11
Security Function Disable......................................... 11
Resetting procedure ................................................. 11
Standby mode Notice .................................................. 12
Mechanical Disassembly............................................. 13
Optical Parts Disassembly........................................... 17
Adjustments................................................................. 23
Adjustments after Parts Replacement ...................... 23
Optical Adjustments..................................................... 24
Contrast adjustment ................................................. 24
Integrator lens adjustment ........................................ 25
Relay lens-Out adjustment ....................................... 26
Electrical Adjustments ................................................. 27
Service Adjustment Menu Operation........................ 27
Memory IC (IC1391) Replacement........................... 27
Circuit Adjustments................................................... 28
Test Points and Locations ........................................ 34
Service Adjustment Data Table ................................ 35
Chassis Block Diagrams.............................................. 53
Chassis over view..................................................... 53
System control.......................................................... 54
Lamp control............................................................. 55
Audio circuit .............................................................. 56
Power supply & protection circuit ............................. 57
Fan control circuit ..................................................... 58
IIC bus control circuit ................................................ 59
Network circuit .......................................................... 60
Troubleshooting........................................................... 61
Indicators and Projector Condition ........................... 61
No Power.................................................................. 62
No Picture................................................................. 63
No Sound.................................................................. 64
Control Port Functions................................................. 65
Scaler I/O Port Functions (PW392) .......................... 65
I/O Expander Port Functions (TE7783) ................... 66
IC Block Diagrams....................................................... 67
Parts Location Diagrams ............................................ 74
Mechanical Parts List .................................................. 80
Electrical Parts List...................................................... 82
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.................A15
Note on Soldering......................................................A16

-3-
Safety Instructions
Safety Precautions
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.
1: An isolation transformer should be connected in
the power line between the projector and the AC
line before any service is performed on the projec-
tor.
2: Comply with all caution and safety-related notes
provided on the cabinet back, cabinet bottom,
inside the cabinet or on the chassis.
3: When replacing a chassis in the cabinet, always
be certain that all the protective devices are
installed properly, such as, control knobs, adjust-
ment covers or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT T
HE PROTECTIVE SHIELD IN POSITION AND PROP
ERLY SECURED.
4: Before replacing the cabinet cover, thoroughly
inspect the inside of the cabinet to see that no
stray parts or tools have been left inside.
Before returning any projector to the customer, the
service personnel must be sure it is completely
safe to operate without danger of electric shock.
Service Personnel Warning
Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always
turn off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.
Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer
generates high voltages (15kV - 25kV) at its starts.
Since the lamp is very high temperature during units operation replacement of the lamp should be done at
least 45 minutes after the power has been turned off, to allow the lamp cool-off.
Product Safety Notice
Product safety should be considered when a component replacement is made in any area of the projector.
Components indicated by mark !in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is, therefore, particularly recommended that the replacement of these
parts must be made by exactly the same parts.

-4-
Specifications
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
Mechanical Information
Projector Type Multi-media Projector
Dimensions (W x H x D) 13.16" x 3.09" x 10.14" (334.2 x 78.4 x 257.5 mm) (Not including protrusions)
Net Weight 7.7 lbs (3.5 kg)
Feet Adjustment 0˚ to 8.9˚
Panel Resolution
LCD Panel System 0.74" TFT Active Matrix type, 3 panels
Panel Resolution 1,280 x 800 dots
Number of Pixels 3,072,000 (1,280 x 800 x 3 panels)
Signal Compatibility
Color System PAL, SECAM, NTSC, NTSC4.43, PAL -M, and PAL -N
SD/HDTV - Signal Component: 480i, 480p, 575i, 575p, 720p, 1035i, and 1080i
HDMI: 480p, 575p, 720p, 1080i, and 1080p
Scanning Frequency H-sync. 15 kHz–100 kHz, V-sync. 50–100 Hz
Optical Information
Projection Image Size (Diagonal) Adjustable from 40” to 300”
Throw Distance 3.3' (1.0m) - 39.7' (12.1m)
Projection Lens F1.7–2.5 lens with f=19.2 mm–30.2 mm with manual zoom and focus
Projection Lamp 275 W
Interface
Video Input Jack RCA Type x 1
S-video Input Jack Mini DIN 4 pin x 1
Audio Input Jacks RCA Type x 2
Computer 1 /Computer2 Audio Input Jacks Mini Jack x 2
Computer In 1/ Component Input Terminal Mini D-sub 15 pin x 1
Computer In 2/MONITOR OUT Terminal Mini D-sub 15 pin x 1
Control port D-sub 9 pin x 1
Audio Output Jack Mini Jack (stereo) x 1 (variable)
LAN Connection Terminal RJ-45
HDMI HDMI (V1.3 with Deep Color ) x 1
Audio
Internal Audio Amp 1.0 W RMS
Built-in Speaker 1 speaker, ø1.10" (28 mm)
Power
Voltage and Power Consumption AC 100–240 V (4.0A -1.8A Max.), 50/60 Hz
Operating Environment
Operating Temperature 41˚F–95˚F (5 ˚C–35 ˚C)
Storage Temperature 14˚F–140˚F (-10˚C–60 ˚C)
Remote Control
Battery AAA or LR03 1.5V Alkaline Type x 2
Operating Range 5 m/±30˚
Dimensions 2.0" (W)x 0.7"(H) x 4.3" (D) (52 mm x 18 mm x 110 mm )
Net Weight 2.37 oz (67g) (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.

-5-
Circuit Protections
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
Thermal switch
There is the thermal switch (SW902) inside of the projector to de-
tect the internal temperature rising abnormally. When the internal
temperature reaches near 100˚C, the thermal switch opens to stop
the operation of the power supply circuit.
The thermal switch cannot be reset itself automatically even if the
internal temperature becomes normal. Reset the thermal switch
following to the below procedure.
How to reset the thermal switch
1. Insert the sharp tool like a screwdriver into a hole on the cabinet
from the cabinet bottom.
2. Press the reset button on the thermal switch with the screw-
driver.
CAUTION:
Before press the reset button, make sure that the AC cord must be
disconnected from the AC outlet.
Thermal switch (SW902)
Lamp cover switch
(SW901)
Lamp cover switch
The lamp cover switch (SW901) cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed completely.
After opening the lamp cover for replacing the lamp ass’y, place the
lamp cover correctly otherwise the projector can not turn on.
Fuse
A fuse is located inside of the projector. When the POWER indicator
is not lightning, the fuse may be opened. Check the fuse as follow-
ing steps.
The fuse should be used with the following type;
Fuse Part No.: 323 025 1204
TYPE 8A 250V FUSE
LITTEL FUSE INC. TYPE 215008.
How to replace the fuse
1. The fuse is placed on the filter board under the main board. Re-
move the cabinet top and main board.
2. Take the fuse off, and replace the new one with the specified type.
Fuse

-6-
Circuit Protections
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE AC
POWER CORD CONNECTED UNDER AN ABNOR-
MAL CONDITION. IT MAY RESULT IN FIRE OR
ELECTRIC SHOCK.
LED indicator
WARNING
lights red
Warning temperature and power failure protection
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.
The projector is shut down and the WARNING indicator is blinking red.
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 nor-
mal. 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 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.
4Note:
- 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.
POWER

-7-
Resetting the Filter Counter
Cleaning the Filter
Maintenance
Be sure to reset the Filter counter after cleaning or
replacing the filters.
Press the MENU button to display the On-Screen
Menu. Use the Point ed buttons to select Setting
and then press the Point 8or the SELECT button.
Use the Point ed buttons to select Filter counter
and then press the SELECT button. Use the Point
ed buttons to select Filter counter reset and then
press the SELECT button. Filter counter Reset?
appears. Select Yes to continue.
1
2
Filter counter
Filter counter Reset?
appears.
Select Yes, then
another confirmation
box appears.
Select Yes again
to reset the Filter
counter.
Another confirmation dialog box appears, select
Yes to reset the Filter counter.
3
H
PNote:
When reinserting these filters, be sure
that the slit part is facing the outer side.
Filter prevents dust from accumulating on the optical elements inside the projector. Should the filters become
clogged with dust particles, it will reduce cooling fans’ effectiveness and may result in internal heat buildup
and adversely affect the life of the projector. If a Filter warning icon appears on the screen, clean the filters
immediately. Clean the filters by following the steps below.
CAUTION
Do not operate the projector with the filters
removed. Dust may accumulate on the optical
elements degrading picture quality.
Do not put anything into the air vents. Doing so
may result in malfunction of the projector.
Turn off the projector, and unplug the AC power cord
from the AC outlet.
Turn the projector over and remove the filters by
pulling the latches upward.
1
2
Gently clean the filters by using a brush or rinse it
softly.
3
When rinsing the filters, dry they well. Replace the
filters properly. Make sure that the filters are fully
inserted to the projector.
4
Filters
Pull up and remove.
RECOMMENDATION
We recommend avoiding dusty/smoky environments
when you operate the projector. Usage in these
environments may cause poor image quality.
When using the projector under dusty or smoky
conditions, dust may accumulate on a lens, LCD panels, or
optical elements inside the projector degrading the quality
of a projected image. When the symptoms above are
noticed, contact your authorized dealer or service station
for proper cleaning.

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

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

-10-
Maintenance
Cleaning
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.
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.
Cleaning the Projector Cabinet
Cleaning the Projection Lens
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.
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.

-11-
Security Function Notice
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.
Function Description
Key lock
Locks operation of the top control or the remote con-
trol.
If the Key lock is enabled with top control lock, the
projector can no longer be started.
Initial setting: Key lock function is disabled.
PIN code lock
Prevents the projector from being operated by an un-
authorized person.
Initial code: “1234”
Logo PIN code lock
Prevents an unauthorized person for changing the
start-up logo and captured image on the screen.
Initial code: “4321”
Security Function Disable
Resetting procedure
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.

-12-
This function is available when operating the projector via network.
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.
(Power consumption when standing by increases in the state of "Network". )
Restricted Function in the standby mode
Standby mode Notice
Function Eco Network
Serial command control - - ✔
Network Function - - ✔
Monitor Out - - ✔
Audio Out - - - -
Direct on - - ✔

-13-
zCabinet Top, Front, R/C Board removal
Mechanical Disassembly
Mechanical disassembly should be made following procedures in nu-
merical 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.
Screws Expression
(Type Diameter x Length) mm
T type M type
A (T3x10)x5
Cabinet front
R/C Board
Fig.1
B (M2.5x6)x2
Cabinet top
D (M2.5x6)
E (T2x6)X2
1. Remove 5 screws A(T3x10) to remove the cabinet top.
2. Remove 2 screws B(M2.5X6) and 2 screws C(T3x8) to
remove the Cabinet front.
3. Remove screw D(M2.5x6) and 2 screws E(T2x6) to
remove the Cabinet front shield.
4. Remove screw F(T2x8) to remove the R/C Board.
Control Buttons
C (T3x8)x2
A
A
A
A
F (T2x8)
B
C
E
Cabinet front shield
Spacer Lens
Decoration LED

-14-
Mechanical Disassembly
xMain Board, AV Board, Rear Panel and Fans removal
Main board Rear panel
E(M2.5x6)
Fig.2
AV board
A (M2.5x6)x5
Side grill
F (T3x6)x2
D (T3x6)x2
1. Remove 6 screws A(M2.5x6),screw B(M2.5x6) and C(M4x4)to remove the Main board.
2. Remove 2 screws D(T3x6) to remove the AV board and the Rear panel.
3. Remove screw E(M2.5x6) to remove the Optical top shield.
4. Remove 2 screws F(T3x6) to remove fans (FN901, FN902) and the Side grill.
FN901
FN902
A (T3x8)
B (M3x8)
FN907
1. Disconnect the fan (FN907 ).
2.Remove screw A(T3x8) and B(M3x8)
to remove lamp ballast socket.
Fig.3
cFan (FN907) removal
Trigger
Trigger Duct
* Trigger should be mounted as
the figure above.
Ballast
socket
A
A
A
A
D
F
B (M2.5x6)
C (M4x4)
Optical
top shield
A

-15-
Mechanical Disassembly
vOptical unit, NETWORK board, Filter board, Temp, Fans, SP901 removal
Fig.4
Temp board
SP901
Projection lens
Noise filter
Optical unit
D (T3x6)x2
C (T3x8)x2
(M2.5x8)x4
B (T3x8)x2
E (T3x6)
Filter board
FN904
FN903
FN905
Duct bottom
1. Remove 6 screws A(T3x8) to remove the Optical unit.
2. Remove 2 screws B(T3x8) to remove the Network board.
3. Remove 2 screws C (T3x8) and 4 hooks on the duct and then remove the Duct top.
Remove the filter board.
4. Remove 2 screws D(T3x6) to remove the Noise filter and remove screw E (T3x6)
to Temp board.
5. Remove fans (FN903, FN904, FN905) and SP901.
Duct top
Network board
A(T3x8)x6
A
A
AA
B D
C
A

-16-
Mechanical Disassembly
Fig.5
bPower, Ballast, LA Board, Thermal SW(SW902) removal
Isolation sheet (2 sheets)
LA board
Thermal switch
(SW902)
Power board
D(T3x6)x2
E (T3x6)
C(T3x6)
F (T3x6)
Ballast board
1. Remove the 2 screws A( T3x8) (top side), remove the 2 screws B (T3x8)
(bottom side) .
2. Remove the Isolation sheet and remove screw C(T3x6) to remove the
Power board assy.
3. Remove 2 screws D(T3x6) to remove the Ballast board.
4. Remove the screw E (T3x6) and remove the LA board.
remove the screw F (T3x6) and remove the thermal switch (SW902).
B (T3x8)x2
D
B
A
A(T3x8)x2

-17-
Optical Parts Disassembly
Before taking this procedure, remove Cabinet Top , Cabinet Front and Main Board following to the “Mechanical Disas-
sembly”.
Disassembly requires a 2.0mm hex wrench.
zIntegrator lens-in disassembly
Fig.1
xRelay lens-out disassembly
Fig.2
Note: The optical unit should be removed from the cabinet bottom before removing the projection lens.
Hooks
Integrator lens-in
Integrator Lens-In Ass'y
(M2.5x5)x2
* Rugged surface
(Behind)
Relay lens-out
Relay lens-out Ass'y
(M2.5x5)x2
Spring

-18-
Optical Parts Disassembly
Polarized glass
Polarized glass-in Ass'y
(M2.5x5)x1
Film sheet
cPolarized glass-in disassembly
Fig.3
* Mount the polarized
glass as the film at-
tached side faces the
prism side.
Hooks

-19-
Optical Parts Disassembly
LCD Panel/ Prism Ass’y
Fig.4-1
v LCD Panel/Prism Ass’y removal
(M2.5x4)x2
(M3x10)
(Bottom side)
Note on handling the LCD panel/prism assy
LCD panels, polarized glasses are very sensitive parts.
Never touch or wipe the surface. When removing the dust on the surface, use a commercial (inert gas) air spray
to remove them.

-20-
Optical Parts Disassembly
L3D07X-85G00
1-B-1234A1
-85G00
L3D07X-86G00
1-B-1234A1
-86G00
G-LCD Panel
There are 2 types of LCD Panel/Prism Ass'y for this model. Either L-Type or R-Type LCD Panel/Prism assy is used on
the projector. Check which type of LCD Panel/Prism assy is used with the figure below.
Since both have no compatibility, same type of the LCD panel/prism assy must be used for replacement. If not, it may
have a serious effect on the optical characteristics.
How to check the type of LCD Panel/Prism Ass'y
Check the printed number on the flat cable of the G-LCD Panel.
L-Type LCD Panel/Prism Ass'y R-Type LCD Panel/Prism Ass'y
Fig.4-2
Panel Type Check
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.
When replacing the LCD Panel/Prism assy,take the optical and electrical adjustments following to the chapter
"Adjustment"