Sanyo PLC-SW30 Service Manual
Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
1 122 223 00 (MP3A)
1 122 226 00 (PP3A)
1 122 226 02 (PP3C)
Original Version
REFERENCE NO. SM5110522
FILE NO.
Model No. PLC-SW30
U.S.A., Canada,
Europe, Asia, Africa
Chassis No. MP3-SW3000
NOTE: 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
■ Safety instructions ________________________________________________3
■ Specifications __________________________________________________ 4
■ Circuit protections ______________________________________________ 5-6
● Fuse ____________________________________________________ 5
● Thermal switch ____________________________________________ 5
● Lamp cover switch __________________________________________ 5
● Warning temperature and power failure protection ________________ 6
■ Lamp replacement ______________________________________________ 7
■ Mechanical disassemblies ______________________________________ 8-13
■ Optical parts disassemblies ____________________________________ 14-16
■ LCD panel/prism ass’y replacement ________________________________ 17
■ Adjustments after parts replacement ________________________________ 18
■ Optical adjustments __________________________________________ 19-21
● Contrast adjustment ________________________________________ 19
● Condenser lens adjustment __________________________________ 20
● Relay lens adjustment ______________________________________ 21
■ Electric adjustments __________________________________________ 22-30
● Service adjustment menu operation ____________________________ 22
● Circuit adjustments ______________________________________ 23-25
● Service adjustment data table ______________________________ 26-29
● Test points and locations ____________________________________ 30
■ Circuit block diagrams ________________________________________ 31-33
■ Power supply lines ______________________________________________ 34
■ Troubleshooting ______________________________________________ 35-38
● Indicators and Projector Condition ____________________________ 35
● No power ________________________________________________ 36
● No picture ________________________________________________ 37
● No sound ________________________________________________ 38
■ Waveforms ____________________________________________________ 39
■ Control port functions ________________________________________ 40-43
■ Cleaning ______________________________________________________ 44
■ IC block diagrams ____________________________________________ 45-48
■ Service parts lists ____________________________________________ 49-67
● Electrical parts list ______________________________________ 49-63
● Mechanical parts list ____________________________________ 64-65
● Optical parts list ________________________________________ 66-67
Drawings & Diagrams ________________________________________ A1-A9
■ Parts description and reading in schematic diagram____________________ A2
■ Schematic diagrams __________________________________________ A3-A6
■ Printed wiring board diagrams __________________________________ A7-A8
■ Pins description of ICs, transistors, diodes __________________________ A9
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 personnel
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 projector.
2: Comply with all caution and safety-related notes pro-
vided 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, adjustment covers
or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT
THE PROTECTIVE SHIELD IN POSITION AND
PROPERLY 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 - 20kV) 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.
4
■ Specifications
● The specifications are subject to change without notice.
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 standards against risk of fire, casualty and electrical hazards.
Projector Type Multi-media Projector
Dimensions (W x H x D) 10.63” x 3.07” x 7.48” (270mm x 78mm x 190mm) (not including Adjustable Feet)
Net Weight 4.6 lbs (2.1 kg)
LCD Panel System 0.5” TFT Active Matrix type, 3 panels
Panel Resolution 800 x 600 dots
Number of Pixels 1,440,000 (800 x 600 x 3 panels)
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 ~ 80 kHz, V-sync. 50 ~ 100 Hz
Projection Image Size (Diagonal) Adjustable from 34” to 200”
Projection Lens F 1.6 ~ 1.8 lens with f 18.3 mm ~ 21.9 mm with manual zoom and focus
Throw Distance 4.3’ ~ 21.2’ (1.3 m ~ 6.5 m)
Projection Lamp 160 W
Video Input Jack RCA Type x 1 (Video) and and Mini DIN 4 pin x 1 (S-Video)
AV Audio Input Jack Mini Jack (stereo) x 1
Computer Input Terminal (VGA) HDB 15 Terminal x 1
Computer Audio Input Jack Mini Jack (stereo) x 1
Control Port Connector Mini DIN 8 pin x 1
USB Connector USB Series B receptacle x 1
Internal Audio Amp 0.8 W RMS
Build-in Speaker 1 speaker, ø1.3" (32 mm)
Feet Adjustment 0˚ to 8.0˚
Voltage and AC 100 ~ 120V (2.4A Max. Ampere), 50/60Hz (The U.S.A and Canada)
Power Consumption AC 200 ~ 240V (1.2A Max. Ampere), 50/60Hz (Continental Europe and The U.K.)
Operating Temperature 41 ˚F ~ 95 ˚F (5˚C ~ 35˚C)
Storage Temperature 14 ˚F ~ 140 ˚F (-10˚C ~ 60˚C)
Remote Control Unit Wireless Remote Control, batteries AAA, SUM-04 or R03 type x 2
Presentation Remote Control, batteries AAA, SUM-04 or R03 type x 2
Presentation Remote Receiver
The CE Mark is a Directive conformity mark of the European Community (EC).
-5-
● Lamp cover switch
The lamp cover switch (SW8801) cuts off the drive signal to the
lamp circuit when the lamp cover is removed or no close 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
prevent the internal temperature rising abnormally. When the
internal temperature reaches near 100˚C, turn off the AC main
power supply automatically.
The thermal switch is not reset to normal automatically even if the
internal temperature becomes normal. Reset the thermal switch
following procedure.
Check the resistance between terminals of thermal switch by
using the tester. If it has high impedance, thermal switch may be
in operative.
How to reset the thermal switch
1.
Remove the cabinet top following to “Mechanical
Disassemblies”.
2. Press the reset button on the thermal switch with a sharp-
pointed tool.
CAUTION:
Before press the reset button, make sure that the AC cord must
be disconnected from the AC outlet.
■ Circuit Protections
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the projector, it will automatically turn off by operating one of the following protection circuits.
● 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 following steps.
The fuse should be used with the following type;
How to replace the fuse
1. Remove the cabinet top following to “Mechanical
Disassemblies”.
2. Remove the cover on the Filter Board.
3. Remove fuse from fuse holder.
To install the fuse, take reversed step in the above.
Fuse Part No.: 423 022 2102
TYPE T4.0AH 250V FUSE
LITTEL FUSE INC. TYPE 215004
Fuse
Filter Board
Thermal Switch
Lamp Cover
Lamp Cover Switch
-6-
Circuit Protections
● Warning temperature and power failure protection
The WARNING indicator flashes red and the projector will automatically turn off when the internal temperature of
the projector exceeds the normal temperature or when stopping cooling fans or when the internal power supply
lines are failed.
Check the following possible causes and wait until stopping the WARNING indicator flashing.
Possible causes
- Air filter is clogged with dust particles. Remove dust from the air filter 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)
If the WARNING indicator still continues to flash, there may be defects on cooling fans or power supply circuits.
Please check fan operation and power supply lines referring to the “Power Supply Lines Chart”.
Air filter care and cleaning
The removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror.
Should the air filters become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may
result in internal heat build up and adversely affect the life of the projector.
To clean up the air filters, follow the cleaning procedure
below:
1. Tu rn the projector off, and disconnect the AC power
cord from the AC outlet.
2. Tu rn the projector upside down and remove the air fil-
ters by pulling the latches upward.
3. Clean the air filters with a brush or wash out dust and
particles.
4. Replace each air filter properly. Make sure that the air
filters are fully inserted.
CAUTION:
Do not operate the projector with the air filters removed.
Dust may accumulate on the LCD panel and the mirror,
and it may spoil the fine picture image.
Do not put the small parts into the air intake vents. It may
result in the malfunction of the projector. The air filter is
small parts. Take care that children don’t eat or swallow it.
RECOMMENDATION
We recommend avoiding dusty, smoky environments when operating the projector. Usage in these environments
may cause poor image quality.
When using under dusty or smoky conditions, dust may accumulate on optical elements inside the projector. The
condition may degrade the quality of a projected image.
When the above symptoms are noticed, please clean up the LCD panel and lens following to the “Cleaning
Method”.
Air filters
-7-
WARNING:
- Allow a projector to cool, for at least 45 minutes before you open Lamp
Cover. The inside of a projector can become very hot.
- For continued safety, replace with a lamp assembly of the same type.
- Do not drop a lamp assembly or touch a glass bulb! The glass can
shatter and may cause injury.
Procedure
1 Tu rn off the projector and disconnect the AC plug. Allow the projector to
cool at least for 45 minutes.
2 Remove 1 screw and remove the lamp cover.
3 Remove 2 screws and pull out the lamp assembly by grasping the han-
dle.
4 Replace the lamp assembly securely and tighten 2 screws.
5 Close the lamp cover and tighten 1 screw.
6 Connect the AC Power Cord to the projector and turn on the projector.
Note:
- Do not reset the Lamp Replace Counter, except after lamp is replaced.
- The projector can not be turned-on with lamp cover removed, because
when the lamp cover is removed, the lamp cover switch is also released
to switch off the mains power for safety.
7 Reset the Lamp Replace Counter, see below explanation.
■ Lamp Replacement
1 Tu rn the projector on, and press the MENU button
and the on-screen menu will appear. Press the
POINT LEFT/RIGHT buttons to move the red frame
pointer to the Setting Menu icon.
2 Press the POINT DOWN button to move the red
frame pointer to “Lamp counter reset” and then press
the SELECT button. The message “Lamp replace
counter reset?” is displayed. Move the pointer to [Yes]
and then press the SELECT button.
3 Another confirmation dialog box appears and select
[Yes] to reset Lamp Replace Counter .
Please refer to the owners manual for further information.
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”.
The LAMP REPLACE indicator will light yellow when
the total lamp used time reaches 2000 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 = Teco + Tnomal (1+1/4)
Teco : used time in the Eco mode
Tnormal : used time in the Normal and Auto mode
You can check the lamp replace counter following to
below procedure.
1 Press and hold the POWER ON-OFF button on the
projector or the remote control unit for more than 20
seconds.
2 The projector used time and lamp used time will be
displayed on the screen briefly.
Lamp cover
Total lamp used time
ORDER REPLACEMENT LAMP
T
ype No.
Service Parts No.
POA-LMP57 610 308 3117
How to reset Lamp Replace Counter
How to check Lamp used time
Screws
Handle
Lamp Assembly
Screw
Projector used time
Counter
Projector
Lamp
Normal
Eco
130H
24H
100H
Total
130H
-8-
1 Remove the Air Filter in the side of the set at first.
(If not, the filter would be broken.)
2 Remove 4 screws A (M3x6) and 1 screw B (M3x8),
and then take the Cabinet Top upward off.
■ Mechanical Disassemblies
Mechanical disassemble should be made following procedures in numerical 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.
Fig.1
Cabinet Top removal
1
Screws Expression
(Type Diameter x Length
) mm
T type M Type
A
A
A
B
A
Air filter (Panel net_side)
Cabinet Top
-9-
Mechanical Disassemblies
1 Remove 4 screws (M3x6) to take the Main Board upward.
Fig.3
Main Board removal
3
Main Board
1 Remove 2 screws A (M3x6) and 2 screws B (M3x6
black) to take the Cabinet Front off.
2 Remove 1 screw C (T3x6) to the R/C Board on the
Cabinet Front.
Fig.2
Cabinet Front and R/C Board removal
2
C
A
A
B
B
R/C Board
Cabinet Front
-10-
Mechanical Disassemblies
1 Remove 1 screw (M3x6) to take the Thermal Switch
(SW902) and the Cover Spacer off.
Fig.5
Thermal SW removal
5
Thermal SW
Lamp Cover Spacer
Fig.4
1 Remove 1 screw A (M4x4) and take the Rear Panel
ass’y upward off.
2 Remove 2 screws B (T3x8) to take the fan (FN903) off.
3 Remove 4 screws C (T3x6) and take AV Board from the
Rear Panel ass’y off.
Rear Panel, AV Board and FN903 removal
4
A
B
C
B
C
C
C
AV Board
Rear Panel
FN903
Thermal SW Cover
-11-
Mechanical Disassemblies
1 Remove 4 screws A (T2x4) to take off the spacer sheet
and the shield plate on the Power Board.
2 Remove 1 screw B (M3x8) to take the Speaker(SP901)
off.
3 Remove 2 screws C (T3x8) and 1 screw D (M4x4) to take
the Power Unit and the Fan(FN906) off.
4 Ta ke the Fan(FN906) from the Holder by pulling it.
5 Remove 3 screws E (T3x6) to take the Power Unit off.
Notes:
You can remove the connectors on the Power Unit
after the Lamp Ballast Unit removal.
Fig.7
Power Unit, Speaker and FN906 removal
7
A
A
A
A
B
E
E
E
D
C
Spacer Sheet
Speaker Holder
Speaker (SP901)
Power Board
FN906
Holder
Fig.6
1 Remove 2 screws A (M3x8) and take the Lamp Cable
off.
2 Remove 6 screws B (T3x10) and take the Optical Unit
upward off.
Optical Unit removal
6
A
A
B
B
B
B
B
B
Optical Unit
Lamp Cable
Shield Plate
C
Cover lens sheet
-12-
Mechanical Disassemblies
1 Remove 2 screws A (T3x8) to take the Fan (FN904)
ass'y off.
2 Remove 2 screws B (M3x30) to take the Fan (FN904)
off from the Fan mounting base.
Fig.9
FN904 removal
9
A
A
B
B
FN904 Ass'y
FN904
Fig.8
1 Remove 1 screw A (M4x4) to take the Earth cable off.
2 Remove 2 screws B (T3x8) to take the Lamp Ballast
Unit and the Filter Board off.
3 Remove 2 screws C (T3x6) to take the Lamp Ballast
Unit off.
4 Remove 3 screws D (T3x6) to take the Filter Board off.
Lamp Ballast Unit and Filter Board
removal
8
A
B
B
C
C
D
D
D
Lamp ballast Board
Holder
Filter Board
Spacer Sheet
Spacer Sheet
Shield Plate
-13-
1 Remove 1 screws A (T4x4) to take the shield plate off.
2 Remove 2 screws B (T3x8) to take the Fan (FN901) and
the duct off.
3 Remove 2 screws C (T3x8) to take the SW Board and
the spring off.
Mechanical Disassemblies
Fig.11
FN901 and Lamp Cover SW removal
11
FN901
SW Board
Spring
Earth Plate
Duct
B
B
C
C
1 Remove 1 screw A (T3x8) to take the Duct under the
Panel.
2 Remove 1 screw B (T3x8) to take the Holder with the
Fans(FN902 and FN905) off.
3 Remove 2 screws C (T3x10) to take the Fans (FN902
and FN905) off.
4 Remove 1 screw D (T3x6) to take the Sensor Board off.
Fig.10
FN902, FN905 and Sensor Board removal
10
A
B
C
C
D
Sensor Board
FN902
FN905
Shield Plate
A
Spacer sheet
Spacer
■ Optical Parts Disassemblies
Before taking this procedure, remove Cabinet Top, Main Board and Optical Unit following to the “Mechanical
Disassemblies”.
Fig.2
-14-
Fig.1
1
Remove 4 screws to take the Lamp Holder off.
Lamp Holder removal
1
1 Remove 3 screws to take the Projection Lens ass'y off.
Projection Lens Ass'y removal
2
Optical Unit Box
Lamp Holder
Optical Unit Box
Projection Lens
and Panel/Prism Ass'y
-15-
Fig.4
Fig.3-1
1 Remove each screw to take the polarized glass-in R/G/B
off.
Note:
The polarized glass-in_red is sticked on the condenser
lens_red. So, it cannot be removed separately.
Polarized Glass-In removal
3
1 Remove 6 screws to take the Optical unit top off.
Optical Unit Top removal
4
Optical Unit Box
Optical Unit Base
Polarized glass_Red Polarized glass
_Green and Blue
Polarized glass sticked
on Condenser lens(R)
Polarized glass with
mounting holder
Fig.3-
2
RB
G
Screw
Polarized glass_Red
Polarized glass_Blue
Polarized glass_Green
Screw
Screw
Optical Parts Disassemblies
-16-
Optical Parts Disassemblies
When the optical parts in the optical unit mounting or assembling, the
parts must be mounted in the specified location and direction as
shown in figure below.
14
12
Fig.5
3
1
2
4
9
Locations and Directions
13
6
1 Integrator lens (IN)
2 Mirror (W)
3 Integrator lens (OUT)
4 PBS (polarizing beam splitter)
5 Condenser lens (IN)
6 Dichroic mirror (B)
7 Dichroic mirror (G)
8Relay lens (IN)
9 Mirror (R)
10 Relay lens (OUT)
11 Condenser lens (R)
12 Condenser lens (G)
13 Condenser lens (B)
14 Mirror (B)
Key No. Description
10
11
5
7 8 9
-17-
■ LCD Panel/Prism Ass’y Replacement
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 adjustments.
- Check the “Condenser Lens Adjustment” and “Relay Lens Adjustment” following to chapter “Optical
Adjustment”.
- Check the “White Balance Adjustment” and “Common Centre Adjustment” following to chapter
“Electrical Adjustment”.
- Check the white uniformity on the screen.
If you find the color shading, please adjust the white uniformity by using the proper computer and
“Color Shading Correction” software supplied separately. The software can be ordered as follows;
COLOR SHADING CORRECTION Ver. 3.0
Service Parts No. 645 056 6288
1 Remove 4 screws to take the Projection Lens off.
LCD Panel/Prism Ass'y removal
1
Projection Lens
Panel/Prism Ass'y
Fig.1
1
Tighten 4 screws to fix the Projection Lens securely,
making sure that the zoom lever is upside.
Note:
Do not replace the LCD panel separately otherwise it can
not obtain proper picture.
Do not touch the prism, the LCD panel and the electrode
of flexible cable.
LCD Panel/Prism Ass'y attachment
2
Zoom Lever
UP
-18-
● : Adjustment necessary ❍ : Check necessary
■ Adjustments after Parts Replacement
Contrast Adjustment
R-Contrast adjustment ❍●
G-Contrast Adjustment ❍●
B-Contrast adjustment ❍●
Condenser lens adjustment ❍❍
Relay lens adjustment ❍❍
PC pedestal adjustment ●
PC gain adjustment ●
Video gain adjustment ●
480p pedestal adjustment ●
480p gain adjustment ●
480i gain adjustment ●
Gamma adjustment (PC and AV) ●
Common center adjustment ●●
White balance adjustment (PC and AV) ❍❍
Disassembly / Replaced Parts
LCD/
Prism
Ass’y
Optical
Unit
Polarized glass
R(✽ ) GB
Optical Adjustments
Electrical Adjustments
Powe r
Board
Main
Board
Note(✽ ): The polarized glass(R) is sticked on the condenser lens(R).
-19-
G-Polarized Glass
Mounting Base
R-Polarized Glass
Mounting Base
B-Polarized Glass
Mounting Base
A
A
A
Fig.1-2
■ Optical Adjustments
Main Board
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a plus screwdriver, 2.0mm hex wrench and a slot screwdriver.
Note: Do not disconnect connectors K8A, K8B, K8H, K48K, K48L, K66A, K66B, K66C, K66D, K66E and K66F
on the main board, because the projector can not turn on due to operate the power failure protection.
Fig.1-1
Polarized
glass
mounting base
A
[Before Adjustment]
- Input a 100% of black raster signal.
[R/G/B-CONTRAST ADJUSTMENT]
1 Loosen a screw A (Fig.1-1/1-2) on the polarized glass mounting
base which you intend to adjust.
2 Tu rn the polarized glass mounting base as shown in Fig.1-1 to
obtain the darkest brightness on the screen.
3 Tighten the screw A to fix the polarized glass mounting base.
Repeat steps 1 to 3 for remaining polarized glasses.
Contrast adjustment
-20-
Optical Adjustments
Fig.2-2
1 Tu rn the projector on by a state of without FPC cables.
2 Adjust the adjustment base of condenser lens ass’y to make color
uniformity in white.
1) If the shading appears on the left or right of the screen as
shown in Fig.2-1, loosen 2 screws A with the 2.0mm hex driver, and adjust the slot B to make color uniformity in green by
using a slot screwdriver.
2) If the shading appears on the top or bottom of the screen as
shown in Fig.2-2, loosen 2 screws C with the 2.0mm hex driver, and adjust the slot D to make color uniformity in green by
using a slot screwdriver
3 Tighten screws A and C to fix the Condenser lens unit.
Note:
The relay lens adjustment must be carried out after completing this
adjustment.
y
x
Moving of Slot D
Slot D
a
b
b
a
Moving of slot B
Fig.2-1
Slot B
A
C
x
y
White
White
Condenser Lens adjustment
A
C
-21-
1 Tu rn the projector on by a state of without FPC cables.
2 Adjust the adjustment base of relay lens ass’y to make color unifor-
mity in white.
1) If the cyan bar appears on the left or right of the screen as shown
in Fig.4-1, loosen 2 screws A with the 2.0mm hex driver, and
adjust the slot B to make color uniformity in white by using a slot
screwdriver.
2) If the cyan bar appears on the top or bottom of the screen as
shown in Fig.4-2, loosen 2 screws C with the 2.0mm hex driver,
and adjust the slot D to make color uniformity in white by using
a slot screwdriver.
3 Tighten the screws A and C to fix the relay lens unit.
Fig.4-1
A
Slot B
b
a
a
Moving of slot B
b
White
Fig.4-2
Slot D
Moving of slot D
y
x
C
Optical Adjustments
x
y
Relay lens-Out adjustment
White
C
Cyan
Cyan
A
-22-
■ Electrical Adjustments
To enter the service mode
To enter the “Service Mode”, press and hold the MENU and INPUT button on the projector at the same time for
more than 3 seconds, or press and hold the MENU button on the remote control unit for more than 20 seconds.
The service menu appears on the screen as follows.
To adjust service data
Select the adjustment item no. by pressing the pointer UP or DOWN button, and change the data value by pressing the VOLUME – or VOLUME + button. Refer to the “Service Adjustment Data Table” for further description of
adjustment item no. and data value.
To exit the service mode
To exit the service mode, press the POWER ON-OFF button on the projector or the remote control unit.
● Service Adjustment Menu Operation
IC1841 on the main board stores the data for the service adjustments, and should not be replaced except for
the case of defective device.
If replaced, it should be performed the re-adjustments
following to the “Electrical Adjustments”.
The data of lamp replacement monitor timer is stored
in the IC1841.
Please note that the lamp replace counter is reset
when the memory IC (IC1841) is replaced.
(Lamp replace counter can not be set to the previous
value.)
● Caution to memory IC replacement
When IC1841 is replaced with new one, the CPU
writes down the default data of the service adjustments
to the replaced IC, refer to the service adjustment
table. As these data are not the same data as factory
shipped data, it should be required to perform the re-
adjustments following to the “Electrical Adjustments”.
Please note that in this case the lamp replace counter
will be reset.
● Caution of Main Board replacement (in the case
IC1841 is not defective)
When the main board is replaced, IC1841 should be
replaced with the one on previous main board. After
replacement, it should be required to perform the readjustments following to the “Electrical Adjustments”.
In this case, the lamp replace counter can be kept the
v
alue as before.
● Memory IC Replacement
Data value
Item No.
Input Mode
Version No.
Note :
This part of display is available
at the service
mode No.60 - 83.
ON- OFF
POWER
WARNING
–
E
M
U
L
O
V
SELECT
LAMP
REPLACE
V
O
L
U
M
E
+
INPUT
MENU
Service Mode
Computer
70
35
100
TempA TempB TempC
32.10
43.21 45.67
Fan1Speed Fan2Speed Fan3Speed
97 105 79
1. Receive the 16-step gray scale computer signal with
COMPUTER IN [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPR1” (+) and
chassis ground (-).
4. Select item no. “7” and change data value to adjust
waveform “a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TPG1” (+) and
chassis ground (-).
6. Select item no. “8” and change data value to adjust
waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TPB1” (+) and
chassis ground (-).
8. Select item no. “9” and change data value to adjust
waveform “a” to be minimum amplitude.
-23-
● Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance and product safety.
Electrical Adjustments
[Adjustment Condition]
● Input signal
Video signal .......................... 1.0Vp-p/75Ω terminated, 16 steps gray
scale, white 100% and white 50% pattern (Composite video signal)
Computer signal .................... 0.7Vp-p/75Ω terminated, 16 steps gray
scale pattern (SVGA)
Component Video signal ........ 0.7Vp-p/75Ω terminated, 16 steps gray
scale, white 100% and black 0% pattern (480i format and 480p format)
● Picture control mode ................ “STANDARD” mode unless otherwise
noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering to the service mode and adjusting the service
data.
x PC Gain adjustment
16 steps gray scale pattern
1. Receive the 16-step gray scale computer signal with
COMPUTER IN [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPR1” (+) and
chassis ground (-).
4. Select item no. “275” and change data value to adjust
the pedestal level and black level to be the same
level.
5. Connect an oscilloscope to test point “TPG1” (+) and
chassis ground (-).
6. Select item no. “276” and change data value to adjust
the pedestal level and black level to be the same
level.
7. Connect an oscilloscope to test point “TPB1” (+) and
chassis ground (-).
8. Select item no. “277” and change data value to adjust
the pedestal level and black level to be the same
level.
z PC Pedestal adjustment
White 100%
Black 100%
White Level
Black Lebel
Pedestal Lebel
(a)
-24-
1. Receive the 16-step gray scale component signal
(480i format) with COMPUTER IN [COMPONENT]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPR1”(+) and
chassis ground (-).
4. Select item no. “7” and change data value to adjust
waveform “a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TPG1” (+) and
chassis ground (-).
6. Select item no. “8” and change data value to adjust
waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TPB1”(+) and
chassis ground (-).
8. Select item no. “9” and change data value to adjust
waveform “a” to be minimum amplitude.
1. Receive the 16-step gray scale component signal
(480p format) with COMPUTER IN [COMPONENT]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPR1”(+) and
chassis ground (-).
4. Select item no. “7” and change data value to adjust
waveform “a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TPG1” (+) and
chassis ground (-).
6. Select item no. “8” and change data value to adjust
waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TPB1”(+) and
chassis ground (-).
8. Select item no. “9” and change data value to adjust
waveform “a” to be minimum amplitude.
1. Receive the 16-step gray scale composite video signal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPR1” (+) and
chassis ground (-).
4. Select item no. “7” and change data value to adjust
waveform “a” to be minimum amplitude.
5. Connect an oscilloscope to test point “TPG1” (+) and
chassis ground (-).
6. Select item no. “8” and change data value to adjust
waveform “a” to be minimum amplitude.
7. Connect an oscilloscope to test point “TPB1” (+) and
chassis ground (-).
8. Select item no. “9” and change data value to adjust
waveform “a” to be minimum amplitude.
c Video Gain adjustment
Electrical Adjustments
b 480p Gain adjustment
n 480i Gain adjustment
1. Receive the 16-step gray scale component signal
(480p format) with COMPUTER IN [COMPONENT]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPR1” (+) and
chassis ground (-).
4. Select item no. “275” and change data value to adjust
the pedestal level and black level to be the same
level.
5. Connect an oscilloscope to test point “TPG1” (+) and
chassis ground (-).
6. Select item no. “276” and change data value to adjust
the pedestal level and black level to be the same
level.
7. Connect an oscilloscope to test point “TPB1” (+) and
chassis ground (-).
8. Select item no. “277” and change data value to adjust
the pedestal level and black level to be the same
level.
v 480p Pedestal adjustment
White Level
(a)
White Level
(a)
White Level
Black Lebel
Pedestal Lebel
(a)
-25-
1. Receive the 16-step gray scale computer signal with
COMPUTER IN [RGB] mode.
2. Enter the service mode.
3. Project only red light component to the screen.
4. Select item no. “15” and change data value to obtain
the minimum flicker on the screen.
5. Project only green light component to the screen.
6. Select item no. “14” and change data value to obtain
the minimum flicker on the screen.
7. Project only blue light component to the screen.
8. Select item no. “13” and change data value to obtain
the minimum flicker on the screen.
, Common Center adjustment
[PC-GAMMA ADJUSTMENT]
1. Receive the 100% whole-white computer signal with
COMPUTER IN [RGB] mode.
2. Enter the service mode.
3. Measure luminance on the screen with the luminance
meter. It is A for the reading of luminance meter.
4. Change the signal source to the 50% whole-white
computer signal with COMPUTER IN [RGB] mode.
5. Select item no. “16” and change data value to make
the reading of luminance meter to be Ax23%.
[AV-GAMMA ADJUSTMENT]
1. Receive the 100% whole-white composite video signal with Video [Video] mode.
2. Enter the service mode.
3. Measure luminance on the screen with the luminance
meter. It is B for the reading of luminance meter.
4. Change the signal source to the 50% whole-white
computer signal with Video [Video] mode.
5. Select item no. “16” and change data value to make
the reading of luminance meter to be Bx22%.
m Gamma adjustment
Electrical Adjustments
[PC WHITE BALANCE ADJUSTMENT]
1. Receive the 16-step gray scale computer signal with
COMPUTER IN [RGB] mode.
2. Enter the service mode, select item no. “17” (Red) or
“18” (Blue), and change data values respectively to
make a proper white balance.
[AV WHITE BALANCE ADJUSTMENT]
3. Receive the 16-step gray scale video signal with
Video [Video] mode.
4. Enter the service mode, select item no. “17” (Red) or
“18” (Blue), and change data values respectively to
make a proper white balance.
Confirm that the same white balance is obtained in
video and computer input.
. White Balance adjustment
If you find the color shading on the screen, please
adjust the white uniformity by using the proper computer and “Color Shading Correction” software supplied
separately. The software can be ordered as follows;
COLOR SHADING CORRECTION ver.. 3.0
Service Parts No. 645 056 6288
NOTE ON WHITE UNIFORMITY
ADJUSTMENT
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