Sanyo KG5-XU35500 User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
PLC-XU355 PLC-XU305
1 122 473 00 (KG5AC) 1 122 463 00 (KB5AC)
1 122 474 00 (LG5AC) 1 122 464 00 (LB5AC)
1 122 474 02 (LG5CC) 1 122 464 02 (LB5CC)
Original Version
REFERENCE NO. SM5111049-00
FILE NO.
Model No. PLC-XU355
PLC-XU305
U.S.A, Canada,
Europe, U.K, Asia
Chassis No. KG5-XU35500
KB5-XU30500
Match the Chassis No. on the unit's back cover with the
Chassis No. in the Service Manual.
If the Original Version Service Manual Chassis No. does not
match the unit’s, additional Service Literature is required.
You must refer to “Notices” to the Original Service Manual
prior to servicing the unit.

-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 Air Filter ................................................. 7
Resetting the Filter Counter........................................ 7
Attaching the Lens Cover............................................ 8
Cleaning the Projection Lens ...................................... 8
Cleaning the Projector Cabinet ................................... 8
Lamp Replacement ....................................................... 9
Lamp replacement...................................................... 9
How to check Lamp Used Time................................ 10
Warning Message on the non-standard lamp used .. 10
Security Function Notice ..............................................11
Resetting procedure ..................................................11
Mechanical Disassembly ............................................. 12
Cabinet Top, Front, R/C Board removal .................... 12
Main Board, AV Panel, Network Board, Antenna
Board and Fan removal..............................................13
Speaker(SP901), Fan (FN901),Lamp Unit(LP900) and
Optical Unit removal ................................................. 14
Power Board removal................................................ 15
Mounting Duct, Fan(FN903, FN904, FN905) and Filter
Board removal........................................................... 16
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 (IC1371) Replacement ........................... 27
Circuit Adjustments .................................................. 28
Test Points and Locations ......................................... 33
Service Adjustment Data Table ................................. 34
Chassis Block Diagrams .............................................. 51
Chassis over view..................................................... 51
System control.......................................................... 52
Lamp control............................................................. 53
Audio circuit .............................................................. 54
Power supply & protection circuit............................. 55
Fan control circuit ..................................................... 56
Network (MCI) circuit ............................................... 57
Troubleshooting ........................................................... 58
Indicators and Projector Condition............................ 58
No Power .................................................................. 59
No Picture ................................................................. 60
No Sound.................................................................. 61
Control Port Functions ................................................. 62
Scaler I/O Port Functions (PW190)............................ 62
I/O Expander Port Functions (TE7783) ..................... 63
Waveform .................................................................... 64
Electrical Parts List ...................................................... 71
Electrical Parts Location............................................ 72
Electrical Parts List ................................................... 73
Mechanical Parts List................................................... 98
Cabinet Parts Location.............................................. 98
Optical Parts Location............................................... 99
Mechanical Parts List.............................................. 103
Diagrams & Drawings..................................................A1
Parts description and reading in schematic diagram ...A2
Schematic Diagrams....................................................A3
Printed Wiring Board Diagrams..................................A13
Pin description of diode, transistor and IC................. A17
Note on Soldering......................................................A18

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

-4-
Specifications
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
Mechanical Information
Projector Type Multi-media Projector
Dimensions (W x H x D) 12.80" x 3.27" x 10.50" (326mm x 83.1mm x 231.6mm) (Not including protrusions)
Net Weight 2.9 kg
Feet Adjustment 0˚ to 12˚
Panel Resolution
LCD Panel System 0.63" TFT Active Matrix type, 3 panels
Panel Resolution 1,024 x 768 dots
Number of Pixels 2,359,296 (1,024 x 768 x 3 panels)
Signal Compatibility
Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N
High Definition TV Signal 480i, 480p, 575i, 575p, 720p, 1035i, and 1080i
Scanning Frequency H-sync. 15 kHz–100 kHz, V-sync. 50–100 Hz
Optical Information
Projection Image Size (Diagonal) Adjustable from 30" to 300"
Throw Distance 2.3'-23.7'(0.69m – 7.23 m)
Projection Lens F1.65-2.33 lens with f=15.5 mm–24.5 mm with manual zoom and focus
Projection Lamp 225 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/DVI-I Input DVI-I Terminal x 1
Monitor Output Terminal Mini D-sub 15 pin x 1
Control port D-sub 9 pin x 1
USB Connector USB connector (Series A x1, Series B x 1)
Audio Output Jack Mini Jack (stereo) x 1 (variable)
LAN Connection Terminal 100 Base-TX (100Mbps)/10 Base-T (10Mbps), RJ45
Audio
Internal Audio Amp 7.0 W RMS
Built-in Speaker 1 speaker, ø1.46"(37mm)
Power
Voltage and Power Consumption AC 100–120 V (3.7A Max. Ampere), 50/60 Hz (The U.S.A and Canada)
AC 200–240 V (2.0A Max. Ampere), 50/60 Hz (Continental Europe and The U.K.)
Operating Environment
Operating Temperature 41˚F–95˚F (5 ˚C–35 ˚C)
Storage Temperature 14˚F–140˚F (-10˚C–60 ˚C)
Remote Control
Battery AAA or LR03 Type x 2
Operating Range 5 m/±30˚
Dimensions 45 mm (W) x 23 mm (H) x 145 mm (D)
Net Weight 3.5 oz 99 g (including batteries)
Laser Pointer Class II Laser (Max. Output: 1 mW/Wave length: 640–660 nm)
●The specifications are subject to change without notice.
●LCD panels are manufactured to the highest possible standards. Even though 99.99% of the pixels are effective, a
tiny fraction of the pixels (0.01% or less) may be ineffective by the characteristics of the LCD panels.

-5-
Fuse
A fuse is located inside of the projector. When the POWER indica-
tor is not lightning, the fuse may be opened. Check the fuse as
following steps.
The fuse should be used with the following type;
Fuse Part No.: 323 021 7804
TYPE T6.3AH 250V FUSE
LITTLE FUSE INC. TYPE 21506.3
How to replace the fuse
1. The fuse is placed on the filter board under the main board. Re-
move the cabinet top and the main board.
2. Take the fuse off, and replace the new one with the specified type.
Lamp cover switch
The lamp cover switch (SW901) cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed completely.
After opening the lamp cover for replacing the lamp ass’y, place the
lamp cover correctly otherwise the projector can not turn on.
Thermal switch
There is the thermal switch (SW902) inside of the projector to de-
tect the internal temperature rising abnormally. When the internal
temperature reaches near 100˚C, the thermal switch opens to stop
the operation of the power supply circuit.
The thermal switch can be reset itself automatically when the in-
ternal temperature becomes normal.
When the internal temperature reaches near 70˚C, the thermal
switch returns automatically.
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
Thermal switch (SW902)
Fuse
Circuit Protections
Lamp cover switch
(SW901)

-6-
Circuit Protections
The projector will be automatically turned off when the internal temperature of the projector is abnormally high, or
the cooling fans stop spinning, or the power supplies in the projector are failed.
- If the WARNING indicator is flashing, it may detect the abnormal temperature inside the projector. Check the follow-
ing possible causes and wait until the WARNING indicator stops flashing, and then try to turn on the projector.
- If the WARNING indicator lights red, it may defect the cooling fans or power supply circuits. Check fans operation
and power supply lines referring to the chapter “Power supply & protection circuit” in the Chassis Block Diagram
section.
Possible causes
- Air filters are clogged with dust particles. Remove dust from the air filters by following instructions in the “Air filter
care and cleaning” below.
- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are
not obstructed.
- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)
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. If the
projector cannot be turned on and the WARNING indicator
still lights red, unplug the AC power cord and contact the
service station.
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE
AC POWER CORD CONNECTED UNDER AN
ABNORMAL CONDITION. IT MAY RESULT IN FIRE
OR ELECTRIC SHOCK.
Top Control
WARNING emit a
red light

-7-
Turn off the projector, and unplug the AC power cord
from the AC outlet.
Turn the projector over and remove the filters.
1
2
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.
Clean the filters softly by using a brush.
3
Replace the filters properly. Make sure that the filters
are fully inserted to the projector.
4
CAUTION
Do not operate the projector with the filters
removed. Dust may accumulate on the optical
elements degrading picture quality.
Do not put anything into the air vents. Doing so
may result in malfunction of the projector.
RECOMMENDATION
We recommend avoiding dusty/smoky environments when you operate the projector. Usage in these envi-
ronments 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.
Cleaning the Air Filter
Maintenance
Filters ✔Note:
When reinserting this
filter, be sure that the
slit part is facing the
outer side.
Be sure to reset the Filter counter after cleaning or replacing
the filters.
Press the MENU button to display the On-Screen
Menu. Use the Point buttons to select Setting and
then press the Point or SELECT button.
Use the Point buttons to select Filter counter and
then press the SELECT button. Use the Point buttons
to select Filter counter reset and then press 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
Air Filter
Filter Base

-8-
Maintenance
Attaching the Lens Cover
When moving the projector or while it is not in use, replace
the lens cap.
1
2
Thread the string through the hole on the lens cap and
then tie a knot in the string to secure it in place.
To pass the other end of the string into the hole on the
top of the projector and pull at it.
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.
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

-9-
Lamp Replacement
Lamp replacement
WARNING:
- For continued safety, replace with a lamp assembly of the same
type.
- Allow the projector to cool for at least 45 minutes before you open the
lamp cover. The inside of the projector can become very hot.
- Do not drop the lamp module or touch the glass bulb! The glass can
shatter and cause injury.
WARNING : TURN OFF THE UV LAMP BEFORE OPENING THE LAMP COVER.
USE UV RADIATION EYE AND SKIN PROTECTION DURING SERVICING.
ORDER REPLACEMENT LAMP
Type No. POA-LMP131
Service Parts No. 610 343 2069
Lamp Screw
Handles
Screw
Screw
Screw
Lamp Cover
Note
- The projector cannot be turned-on with lamp cover removed, because
when the lamp cover is removed, the lamp cover switch is also re-
leased to switch off the lamp circuit.
Unplug the AC power cord. Let the projector cool for at least 45
minutes.
Loosen the three (3) screws that secure the lamp. Lift the lamp
out of the projector by using the handles.
1
3
Replace the lamp with a new one and secure the three (3)
screws. Make sure that the lamp is set properly. Push the
lamp cover and secure the screw.
4
Loosen the screw and open the lamp cover.
2
Connect the AC power cord to the projector and turn on the
projector.
5
Procedure
For continued safety, replace with a lamp of the
same type. Do not drop a lamp or touch a glass bulb!
The glass can shatter and may cause injury.
Allow a projector to cool for at least 45 minutes
before you open the Lamp Cover. The inside of the
projector can become very hot.
CAUTION
CAUTION
CAUTION
When replacing the lamp because it has stopped illuminating, there is a possibility that the lamp may be
broken.
If replacing the lamp of a 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.

-10-
Lamp Replacement
How to check Lamp Used Time
The LAMP REPLACE indicator will light yellow when
the total lamp used time (Corresponding value) reaches
2,500 hours. This is to indicate that lamp replacement
is required.
The total lamp used time is calculated by using the be-
low expression,
Total lamp used time = Teco + Tnormal x 1.25
Teco: used time in the Eco mode
Tnormal : used time in the Normal mode.
You can check the lamp used time following to the be-
low procedure.
1Press and hold the ON/STAND-BY button on the pro-
jector for more than 20 seconds.
2 The projector used time and lamp used time will be
displayed on the screen briefly as follows.
Recommendation
Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may re-
sult in internal heat build up and short lamp life. We recommend cleaning the air filter after the projection lamp is
replaced.
Refer to “Air Filter Cleaning”.
Counter
Projector 450H
Lamp
Normal 200H
Eco 250H
Corresponding value 500H
Total lamp used time
Projector used time
Counter
Projector 450H
Lamp
Normal
Eco
Corresponding value
Note:
When non-standard lamp is used, lamp used time
should not appear.
Warning Message on the non-standard lamp used
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

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

-12-
zCabinet Top, Front, R/C Board removal
Mechanical Disassembly
Mechanical disassembly should be made following procedures in numerical or-
der.
Following steps show the basic procedures, therefore unnecessary step may
be ignored.
Caution:
The parts and screws should be placed exactly the same position as the original
otherwise it may cause loss of performance and product safety.
Screws Expression
(Type Diameter x Length) mm
T type M Type
B (M3x8)x5
R/C Board
Fig.1
Cabinet top
D (T3X8)x3
1. Loose screw A (M3x8 ) to remove the Lamp Cover.
2. Remove 5 screws B (M3x8 ) to remove the Cabinet Top.
3. Remove the Control Buttons and Dec Inlay LED.
4. Remove 3 screws C (M3x6) and screws D (T3x8 ) to re-
move the Cabinet Front.
5. Remove screw E (T3x6 ) to remove the R/C Board.
Control Buttons
Lamp Cover
A (M3x8)
B
B
B
B
D
D
C (M3X6)x3
C
CE (T3X6)
Dec Inlay LED
Cabinet Front

-13-
Mechanical Disassembly
AV Panel
1. Remove 6 screws A (M2.5x6) and 2 screws B (M4x4) to remove the Main Board.
2. Release the hooks to remove the AV Panel and remove 3 screws C (T3x6) to remove
the AV Board.
3. Remove 2 screws D (T3x8) to remove the Network Board and remove screw E
(M2x4) to remove the Antenna board.
4. Remove the Left side shield. Remove 4 screws F (T3x6) to remove the Network
Board Holder. Remove the Network Board left and right shields. Remove the Module Board.
5. Remove 3 screws G (T3X8) to remove the fans (FN902 and FN906).
Fig.2
xMain Board, AV Panel, Network Board, Antenna Board and Fan removal
A
A
A
A
A
B (M4x4)x2
B
Main Board
C (T3x6)x3
C C
AV Board
Hooks
D (T3x8)x2
D
Network Board
Module Board
Antenna Board
E (M2x4)
F (T3x6)x4
F
Left side shield
Network Board
left shield
Network Board
right shield
Network Board
Holder
G (T3x8)x3
G
G
Fan (FN902)
Fan (FN906)
SW901
A
F
F

-14-
Mechanical Disassembly
1. Remove the 4 screws A (T3x8) to remove the speaker holder and the
Speaker (SP901).
2. Remove 2 screws B (T3x8) and screw C (T3x12) to remove the fan
(FN901).
3. Remove the lamp shield-top. Remove 3 screws D(M3x7) to remove the
Lamp unit (LP900).
4. Remove the 2 screws E (T3x6) to remove the CONNECT ID board.
5. Remove the screw F (T3x8) to disconnect the Ballast socket.
6. Remove 5 screws G (T3x8) and 3 screws H(T3x8) to remove the Optical
Unit and the Lamp holder.
Fig.3
cSpeaker(SP901), Fan (FN901),Lamp Unit(LP900) and Optical Unit removal
Optical Unit
Ballast socket
Speaker
(SP901)
E (T3x6)x2
Lamp
(LP900)
D (M3x7)X3
CONNECT ID
board
Lamp holder
D
D
E
F (T3x8)
A (T3x8)X4
A
A
A
Speaker holder
G (T3x8)X5
G
GG
G
H(T3x8)X3
H
G
Lamp shield-top
H
B (T3x8)X2
B
C (T3x12)
Fan (FN901)

-15-
Mechanical Disassembly
vPower Board removal
Fig.4
Thermal switch
(SW902)
Power board
A (T3x8)x3
D (T3x8)x2
Ballast board
1. Remove 3 screws A (T3x8), screw B (M3x8) and 3 screws C (M4x4) to
remove the power board shield.
2. Remove the 2 screws D (T3x8) to remove the Ballast board.
3. Remove the power board holder. Loose the hooks to remove the Power
board.
C (M4x4)x3
A
B(M3x8)
A
Power board
shield
C
C
D
Power board
holder
Power board
holder
Hooks
Hooks

-16-
Mechanical Disassembly
Fig.5
bMounting Duct, Fan(FN903, FN904, FN905) and Filter Board removal
Filter Board
F (T3x6)
1. Remove screw A (M4x4) , 2 screws B (T3x12) and 4screws C (T3x6) to remove the Mounting duct top,
Mounting duct bottom and fan (FN904).
2. Remove 2 screws D ( T3x12) to remove the fans (FN903 and FN905).
3. Remove screw E (M3x8) and screw F (T3x6) to remove the filter board.
4. Remove the Air filters.
A M4x4)
CT(3x6)x4
FN905
FN903
FN904
Mounting duct
bottom
Mounting duct
top
Air filter
A
B (T3x12)x2
B
C
C
C
D(T3x12)x2
D
Air filter base
Filter Board spacer sheet
Air filter
E (M3x8)

-17-
Optical Parts Disassembly
Before taking this procedure, remove Cabinet Top , Main Board and the Network board following to the “Mechanical
Disassembly”.
Disassembly requires a 2.0mm hex wrench.
zProjection lens disassembly
(M2.5x6)x4 Fig.1
xIntegrator lens-in disassembly
Integrator lens-in
Integrator Lens-In Ass'y
M(2.5x6)
Fig.2
* Rugged surface
(Front)
Projection lens
Optical unit
Note: The optical unit should be removed from the cabinet bottom before re-
moving the projection lens.
(M3x14)x2
Prism Beam Splitter
(PBS)
Integrator lens-out
* Rugged surface
(Rear)

-18-
Optical Parts Disassembly
LCD Panel/
Prism Ass’y
Fig.3-1
cLCD Panel/Prism Ass’y removal
(M3x10)
(Bottom side)
IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement
LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y.
These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced
whole of the LCD panels and prism ass’y at once.
After replacing LCD Panel/Prism ass’y, please check the following points.
- Check that there is no color shading at the top, bottom, left or right of the screen. If there is, try to remove the
shading following to the chapter “Optical Adjustment”.
- Check the white balance. If it needs the adjustment, adjust the white balance following to the “White Balance
adjustment” , “Gamma adjustment” and “Common Center adjustment” in the chapter “Electrical Adjustment”.
- Check the white uniformity on the screen.
If you find the color shading at the some part of the screen, it needs to take the color shading adjustment. This
adjustment should be performed by a computer and it also requires a special software “Color Shading Correction”.
The software will be supplied separately and can be ordered as follows;
COLOR SHADING CORRECTION Ver. 4.00
Service Parts No. 645 075 9611

-19-
Optical Parts Disassembly
L3P06X-86G20
a03CA142I8
-86G20
L3P06X-85G20
a00ca146I8
-85G20
G-LCD PANEL
There are 2 types of LCD Panel/Prism Ass'y for this model. Either L-Type or R-Type LCD Panel/Prism Ass'y is used on
the projector. Check which type of LCD Panel/Prism Ass'y is used with the figure below.
When replacing the LCD Panel/Prism Ass'y, you need to take "Panel Type Check and Setting" on the Electrical Adjust-
ment for the replaced LCD Panel/Prism Ass'y.
The gamma-characteristics is different between L-Type and R-Type LCD Panel/Prism Ass'y.
How to check the type of LCDPanel/Prism Ass'y
Check the printed number on the flat cable of the G-LCD Panel.
L-Type LCD Panel/Prism Ass'y R-Type LCD Panel/Prism Ass'y
Fig.3-2
Panel Type Check

-20-
Optical Parts Disassembly
vPolarized glass-in disassembly
Polarized glass
Polarized glass-in Ass'y
(M2.5x6)x1
Fig.4
bPolarized glass, Pre-polarized glass removal
Pre-Polarized Glass(G)
* Mount the polarized glasses as the film
attached side faces the LCD panel side.
(M2x4)
Film (Blue)
(Red) (Green)
Fig.5
Polarized Glass(G)
Polarized Glass(R)
Polarized Glass(B)
(M2x4)
(M2x4)
Pre-Polarized Glass(B)
Pre-Polarized Glass(R)
* Note:
There is no Pre-Polarized Glass(R) for
KB5-XU30500.