Sanyo PLC-XR201 User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
PLC-XR201 PLC-XR251
1 122 485 20 (KR5AD) 1 122 487 20 (KS5AD)
1 122 486 20 (LR5AD) 1 122 488 20 (LS5AD)
1 122 486 22 (LR5CD) 1 122 488 22 (LS5CD)
Original Version
REFERENCE NO. SM5111143-00
FILE NO.
Model No. PLC-XR201
PLC-XR251
U.S.A, Canada,
Europe, U.K, Asia
Chassis No. KR5-XR20100
KS5-XR25100
Match the Chassis No. on the rating label of the projector
with the Chassis No. in the Service Manual.
If the Chassis No. in the Original Service Manual does
not match the projector's, additional Service Literature
is required. You must refer to "Notices" to the Original
Service Manual prior to the 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 Filters..................................................... 7
Resetting the Filter Counter........................................ 7
Attaching the Lens Cap .............................................. 8
Cleaning the Projection Lens...................................... 8
Lamp replacement...................................................... 9
Resetting the Lamp Counter..................................... 10
How to check Lamp Used Time ................................ 10
Security Function Notice.............................................. 11
Resetting procedure ................................................. 11
Mechanical Disassembly ............................................. 12
Optical Parts Disassembly........................................... 17
Adjustments................................................................. 24
Adjustments after Parts Replacement ...................... 24
Optical Adjustments..................................................... 25
Contrast adjustment.................................................. 26
Condenser Out lens adjustment ............................... 27
Relay lens-Out adjustment ....................................... 28
Electrical Adjustments ................................................. 29
Service Adjustment Menu Operation........................ 29
Memory IC (IC1371) Replacement........................... 29
Circuit Adjustments................................................... 30
Test Points and Locations......................................... 35
Service Adjustment Data Table................................. 36
Chassis Block Diagrams.............................................. 54
Chassis over view..................................................... 54
System control.......................................................... 55
Lamp control............................................................. 56
Audio circuit .............................................................. 57
Power supply & protection circuit.............................. 58
Fan control circuit ..................................................... 59
IIC bus control 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 (PW190) .......................... 65
IC Block Diagrams....................................................... 66
Electrical Parts List...................................................... 71
Electrical Parts Location ........................................... 72
Electrical Parts List ................................................... 73
Mechanical Parts List .................................................. 88
Cabinet Parts Location ............................................. 88
Optical Parts Location .............................................. 89
Mechanical Parts List ............................................... 95
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
Service Personnel Warning
Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always
turn off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.
Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer
generates high voltages (15kV - 25kV) at its starts.
Since the lamp is very high temperature during units operation replacement of the lamp should be done at least
45 minutes after the power has been turned off, to allow the lamp cool-off.
Product Safety Notice
Product safety should be considered when a component replacement is made in any area of the projector.
Components indicated by mark !in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is, therefore, particularly recommended that the replacement of there
parts must be made by exactly the same parts.
WARNING:
The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side
of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is
identified with the line ( ) in the schematic diagram. For continued product safety and protection of 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 projector.
2: Comply with all caution and safety-related notes
provided on the cabinet back, cabinet bottom, inside
the cabinet or on the chassis.
3: When replacing a chassis in the cabinet, always
be certain that all the protective devices are
installed properly, such as, control knobs, adjust-
ment covers or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT
THE PROTECTIVE SHIELD IN POSITION AND PR
OPERLY SECURED.
4: Before replacing the cabinet cover, thoroughly
inspect the inside of the cabinet to see that no stray
parts or tools have been left inside.
Before returning any projector to the customer, the
service personnel must be sure it is completely safe
to operate without danger of electric shock.

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Specifications
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
●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.
Mechanical Information
Projector Type Multi-media Projector
Dimensions (W x H x D) 13.13" x 3.35" x 9.72" (333.5mm x 85.2mm x 247.0mm) (Not including protrusions)
Net Weight 5.5 lbs (2.5 kg)
Foot Adjustment 0˚ to 10˚
Panel Resolution
LCD Panel System 0.55" 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 40” to 300”
Throw Distance 4.3' - 38.7' (1.30m - 11.80m)
Projection Lens F 2.0 ~ 2.15 lens with f 18.38 mm ~ 22.06 mm with manual zoom and focusF 2.0 ~ 2.15 lens with f 18.38 mm ~ 22.06 mm with manual zoom and focus
Projection Lamp 220 W
Interface
Video Input Jack RCA Type x 1
Audio Input Jack Mini Jack (stereo) x 1
Computer In 1/ S-video In Mini D-sub 15 pin x 1
/ Component Input Terminal
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 100 Base-TX (100Mbps)/10 Base-T (10Mbps), RJ45
Audio
Internal Audio Amp 1.0 W RMS
Built-in Speaker 1 speaker, ø1.1" (28mm)
Power
Voltage and Power Consumption PLC-XR201:
AC 100–120 V (3.3A Max. Ampere), 50/60 Hz (The U.S.A and Canada)
AC 200–240 V (1.8A Max. Ampere), 50/60 Hz (Continental Europe and The U.K.)
PLC-XR251:
AC 100–120 V (3.5A Max. Ampere), 50/60 Hz (The U.S.A and Canada)
AC 200–240 V (1.9A 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 1.5V ALKALINE TYPE x 2Battery AAA or LR03 1.5V ALKALINE TYPE x 2
Operating Range 16.4' (5 m)/±30˚Operating Range 16.4' (5 m)/±30˚
Dimensions 2.0" (W) x 0.7" (H) x 4.3" (D) (52 mm x 18 mm x 110 mm)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 (67 g) (including batteries)Net Weight 2.37 oz (67 g) (including batteries)

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Fuse
A fuse is located inside of the projector. When the POWER indicator
is not lighting, 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 power board. Remove the cabinet top ,
main board, optical engine and the fan(FN001).
2. Take the fuse off, and replace the new one with the specified type.
Lamp cover switch
The lamp cover switch (SW902) 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 (SW601) inside of the projector to detect
the internal temperature rising abnormally. When the internal tem-
perature reaches near 85˚C, the thermal switch opens to stop the
operation of the power supply circuit.
The thermal switch can be reset itself automatically when the inter-
nal temperature becomes normal.
When the internal temperature reaches near 50˚C, the thermal
switch returns automatically.
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the projec-
tor, it will automatically turn off by operating one of the following protection circuits.
Thermal switch (SW601)
Fuse
Circuit Protections
Lamp cover switch
(SW902)

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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 POWER 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
Circuit Protections

-7-
Maintenance
Turn off the projector, and unplug the AC power cord
from the AC outlet.
Remove the front air filter by pulling the latch
horizontally.
Remove the back air filter by pulling the latch
horizontally and then remove it leftward.
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 air filters with a brush or rinse them softly.
3
When cleaning the air filters by rinsing, dry it well.
Replace the air filters properly. Make sure that the air
filters are fully inserted.
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
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.
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 Point or the SELECT button. Use the
Point buttons to select Filter counter reset and then
press the SELECT button. Filter counter Reset?
appears. Select Yes to continue.
1
2
Resetting the Filter Counter
Filter counter
Filter counter
Reset? appears.
Select Yes, then
another confirmation
box appears.
Select Yes again
to reset the Filter
counter.
Another confirmation dialog box appears, select Yes to
reset the Filter counter.
3
Cleaning the Filters
Air filter (front)
Pull horizontally and remove.
Air filter (back)
Pull horizontally and then remove it leftward.
4 Note:
Please be sure to
fit this edge when
inserting this filter.

-8-
Maintenance
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.
When moving this projector or while not using it over an
extended period of time, replace the lens cap.
Attach the lens cap according to the following procedures.
Attaching 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
bottom of the projector and pull at it.

-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.
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.
ORDER REPLACEMENT LAMP
Type No. POA-LMP132
Service Parts No. 610 345 2456
Follow these steps to replace the lamp.
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.
Close 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
Reset the Lamp Replace Counter.
Refer to the next page for details.
6
Lamp
Screw
Handles
Screw
Lamp Cover
Screw
Screw

-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
3,000 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 + Thigh/normal x 1.5
Teco: used time in the Eco mode
Thigh/normal : used time in the Normal mode and
High mode.
You can check the lamp used time following to the below
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 result 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 500H
Lamp
High/Normal 200 H
Eco 300 H
Corresponding value 600 H
Total lamp used time
Projector used time
Resetting the Lamp Counter
Be sure to reset the Lamp replacement counter after the
lamp is replaced.
Press the Point ▲▼ buttons to choose the Lamp counter
function and then press the Point  or the SELECT button to
access the submenu items.
Lamp counter................This item shows the total
accumulated time of the lamp
usage.
Lamp counter reset.......Press the the SELECT button
to choose Lamp counter reset.
Select Yes in the confirmation
box if you want to reset the lamp
counter, and then choose Yes in
the second confirmation box to
reset lamp counter.
Lamp counter reset

-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
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”

-12-
zCabinet Top, 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)x4
R/C Board
Fig.1
Cabinet top
D (T3X8)x2
1. Loose screw A (M3x8 ) to remove the Lamp Cover.
2. Remove 4 screws B (M3x8 ) and 2 screws C(T3x10) to re-
move the Cabinet top.
3. Remove the Control Buttons and Dec Inlay LED.
4. Remove 2 screws D (T3x8) to remove the Dec Ring.
5. Remove the R/C Board.
Control Buttons
Lamp Cover
A (M3x8)
B
B
B
D
Dec Ring
C
Dec Inlay LED
C (T3X10)x2
Dec Inlay RC

-13-
Mechanical Disassembly
AV Panel
1. Remove 5 screws A (M3x8) and 3 screws B(M4x6) to remove the Right connect shield,
Lamp back shield and Right shield.
2. Remove 2 screws C (T3x8) to remove the Main Board.
3. Release the hooks and screw D (M2x4) to remove the AV Panel.
4. Remove the Speaker (SP901).
Fig.2
xMain Board, AV Panel and Speaker (SP901) removal
C (T3x8)x2
C
Main Board
D (M2x4)
Hooks
B (M4x6)x3
Speaker (SP901)
B
A (M3x8)x5
B
A
A A
A
Lamp back shield
Right shield
Right connect shield

-14-
Mechanical Disassembly
1. Remove the Lens spacer sheet-top. Remove 2 screws A(M3x8) to remove the
Optical back shield.
2. Remove 3 screws B(M3x7) to remove the Lamp A'ssy. Remove 4 screws
C(T3x10) to remove the Optical Unit, Remove 4 screws D(T3x8) and 2 screws
E(T3x8) to remove the Lamp holder and Ballast socket.
3. Remove the lamp cover switch(SW902).
Fig.3
cOptical Unit, Lamp A'ssy and SW902 removal
Optical Unit
Ballast socket
B (M3x7)x3
Lamp holder
C (T3x10)X4
Optical back shield
E(T3x8)x2
Lens spacer
sheet-top
A (M3x8)X2 A
C
C
C
B
D D
D (T3x8)x4 D
B
E
Lamp Ass'y
SW902

-15-
Mechanical Disassembly
vMounting Duct and fans(FN001, FN003, FN004, FN005) removal
Fig.4
FN004
1. Remove the Lens spacer sheet-left, remove 3 screws A(T3x8) and 2
screw B(T3x12) to remove the Lamp in fan duct top and bottom.
2. Remove 7 screws C(T3X8) and 3 screws D(T3x12) to remove the Mounting
duct top.
3. Remove 3 screws E(T3x12) to remove the fans(FN003, FN004 and FN005).
A (T3x8)x3
B(T3x12)x2
FN001
C
C
Lens spacer
sheet-left
A
A
Lamp in fan
duct bottom
Lamp in fan
duct top
C (T3x8)x7
D(T3x12)x3
D
D
C
C
C
C C
Mounting
duct top
E(T3x12)x3
E
E
FN005
FN003
B
Spacer sheet-R
(only for KR5-XR20100)

-16-
Mechanical Disassembly
Fig.5
bPower board, Fan(FN002) and Filter removal
Power board
spacer sheet
1. Remove the Power board spacer sheet.
2. Remove 2 screws A(M3x8) and 2 screws B(M4x6) to remove the Power shield.
3. Remove the thermal switch(SW601). Remove 6 screws C(T3x8) to remove the Power board
holder and the fan(FN002).
4. Remove screw D(T3x8) to remove the Power board.
5. Remove 3 screws E(T3x8) to remove the Lamp Ballast.
6. Remove the Panel net front and Panel net back.
FN002
Power shield
C(T3x8)x6
C
Panel net front
Power board
A (M3x8)x2
A
Power board holder
C
C
C
C
Lamp Ballast
Panel net back
D(T3x8)
E(T3x8)x3
E
E
SW601
Note:
Please pay attention to the install
direction of SW601, the side with
text facing to the projector back.
B (M4x6)x2
B
The exhaust side facing
to the screening shield.

-17-
Optical Parts Disassembly
Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassembly”.
Disassembly requires a 2.0mm hex wrench and a screwdriver.
zProjection lens disassembly
(M2.5x8)x4
Fig.1
xCondenser Out lens disassembly
Fig.2
Projection lens
Optical unit
Note: The optical unit should be removed from the cabinet bottom before re-
moving the projection lens.
M(2.5x6)x3
Condenser Out Lens Ass'y
Condenser Out Lens

-18-
Optical Parts Disassembly
cIntegrator lens-in disassembly
Integrator lens-in
Shield
Integrator Lens-In Ass'y
PBS marker
Integrator lens-out
* Rugged surface
facing to PBS
Fig.3
vCondenser Lens Ass'y disassembly (For KR5-XR20100)
Condenser Lens Ass'y
(M2.5x6)x2
Fig.4
(T3x8)x1
Optical unit top
Release the hook
to remove the lens.
Integrator lens-in
* Rugged surface
facing to PBS
Prism Beam Splitter
(PBS)
Condenser Lens(G)
Condenser Lens(B)
Release the hook
to remove the lens.

-19-
Optical Parts Disassembly
vCondenser Lens Ass'y disassembly (For KS5-XR25100)
(M2.5x6)x2
Fig.4
(T3x8)x1
Optical unit top
b Relay Out lens disassembly
Relay Out lens
Relay lens Ass'y
Fig.5
M(2.5x6)
Condenser Lens (G) Ass'y
Polarized glass (B) Ass'y
*Polarized glass is not re-
moved from the mounting
base.

-20-
Optical Parts Disassembly
LCD Panel/
Prism Ass’y
Fig.6-1
n LCD Panel/Prism Ass’y removal
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 ad-
justment” , “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
(M3x10)x2