Mitsubishi Electric LC62 CHASSIS XL6500LU User manual

2008
CAUTION
Before servicing this chassis, it is important that the service person reads the “SAFETY PRECAUTIONS” and “PRODUCT
SAFETY NOTICE” in this service manual.
Copyright © 2008 Mitsubishi Electric Corporation All Rights Reserved.
MODEL
XL6500LU/
XL6500U
This model is RoHS-compliant.
Provide servicing referring to “NOTES
FOR SERVICING RoHS-COMPLIANT
PRODUCTS” described in the service
manual.
Pb Solder, Pb Joints, Pb PCA
This product uses lead-free solder
on the circuit boards. For repairing
circuit boards, see "Precautions for
resoldering" in this Service Manual.
LCD PROJECTOR
LC62 CHASSIS

- 2 -
NOTES FOR SERVICING RoHS-COMPLIANT PRODUCTS
Follow the notes and instructions below when servicing RoHS-compliant
products.
1. For RoHS-compliant products, be sure to use RoHS-compliant service parts.
2. Check the presence of <G> marking on the rating plate to distinguish RoHS-
compliant product from non-RoHS-compliant product.
<G> marking
With <G> marking: RoHS-compliant product
Without <G> marking: Non-RoHS-compliant product
<Sample>
3. Labels of RoHS-compliant service parts bear <G> marking for identification purpose.
<Sample>
4. Don’t use non-RoHS-compliant parts with RoHS-compliant products.
5. Service parts for RoHS-compliant products are listed in the parts catalog contained
in the service manual.
Parts Name
Model Name
Parts No.
E05R
Mark position
Mark position

- 3 -
SPECIFICATIONS
• Rated Voltage
•
Power Consumption
• Display Technology
• Projection Lens
•
Light Source Lamp
• Image Size
(projection distance)
• Maximum Resolution
• S-Video Input
• Video Input
• Component Video Input
• Analog Input
•
Digital Input (DVI)
• Audio Input
• Speaker
• Control Terminal/
Others
• Dimensions
(not including protrusion)
• Weight
• Operating temperatures
: AC 100 to 240V ; 50/60Hz,
: 4.4A
:
1.3 inch LCD panel ; 3 pieces (for R,G,B)
: Pixels ; 1,024 × 768 = 786,432 pixels
Total 2,359,296 pixels
:
Active pixel rate ; 99.99 % or more (each panel)
: F 1.8 - 2.1 f = 51 - 64 mm[XL6500U]
: 275 W
:60 to 300 inch[XL6500U]
(projection distance ; 2.3 to 11.6 m)
: Computer signal
Maximum resolution ; 1,600 × 1,200 dots(Compressed )
Panel resolution ; 1,024 × 768 dots
:Video signal
NTSC/PAL/SECAM/4.43NTSC/PAL-M/PAL-N/PAL-60
:Component signal
480i,480p,576i,576p,720p,1080i,1080p
Panel resolution ; 1,024 × 768 dots
:
Luminance signal ; 1.0 V(p-p) 75Ω(negative sync)
Chrominance signals ; 0.286 V(p-p) 75Ω(burst signal)
: 1.0 V(p-p) 75 Ω(negative sync)
: YCBCR;
Y ; 1.0 V(p-p) 75 Ω(negative sync)
C
BCR ;0.7 V(p-p) 75 Ω
: RGB ;
0.7 V(p-p) 75 Ω(negative sync)
: YCBCR;
Y ; 1.0 V(p-p) (negative sync)
C
BCR ;0.7 V(p-p)
: HD/CS ;
TTL level (negative or positive polarity)
: VD ; TTL level (negative or positive polarity)
: DVI-D interface (TMDS single link) with HDCP
: 350 mVrms, 10 k Ωor more
: 10 W mono Round type ø 4.5 cm × 1
: RS-232C (D-SUB 9 pin),USB,
LAN (RJ-45),REMOTE IN/OUT
: 371 (W) × 207 (H) × 434 (D) mm
(projector only)
443 (W) × 207 (H) × 434 (D) mm
(including the terminal cover)
: 9.8 kg (projector only)
: 10.5 kg (including the terminal cover)
: + 41 °F (+ 5°C) to 104 °F (+ 40 °C)
• Weight and dimensions shown are approximate.
• Design and specifications are subject to change without notice.

- 4 -
CONTENTS
– FILE “COVERPGE” –
NOTES FOR SERVICING RoHS-COMPLIANT PRODUCTS............................................................................... 2
SPECIFICATIONS................................................................................................................................................. 3
CONTENTS........................................................................................................................................................... 4
– FILE “EXPOSED” –
TRADE MARK, REGISTERED TRADEMARK...................................................................................................... 1
PRODUCT SAFETY NOTICE............................................................................................................................... 1
SAFETY PRECAUTIONS...................................................................................................................................... 2
PRECAUTIONS FOR RESOLDERING................................................................................................................. 3
PCB LOCATION.................................................................................................................................................... 4
EXPOSED VIEW................................................................................................................................................... 6
LVPASSY........................................................................................................................................................ 6
Chassis 1 ASSY............................................................................................................................................... 8
Chassis 2 ASSY............................................................................................................................................... 10
Bottom case unit.............................................................................................................................................. 12
Terminal ASSY................................................................................................................................................. 13
Optical unit 1.................................................................................................................................................... 14
Optical unit 2.................................................................................................................................................... 16
POSITION ADJUSTMENT OF MULTI LENS A ..................................................................................................... 17
DISASSEMBLY ..................................................................................................................................................... 18
1.Removal of the terminal cover ASSY............................................................................................................ 18
2.Removal of the BOO PCB ASSY and BOO SUB PCBASSY....................................................................... 18
3.Removal of the lens unit and zoom focus motor........................................................................................... 19
4.Removal of the top case unit and KEY PCBASSY...................................................................................... 20
5.Removal of the IRF PCB ASSY.................................................................................................................... 21
6.Removal of the MOTOR PCBASSY............................................................................................................. 21
7.Removal of the IRR PCB ASSY.................................................................................................................... 21
8.Removal of the speaker................................................................................................................................ 22
9.Removal of the power fan............................................................................................................................. 22
10.Removal of the MAIN PCB ASSY............................................................................................................... 23
11.Removal of the TERMINAL PCB ASSY...................................................................................................... 23
12.Removal of the DRIVE PCB ASSY and LCD block.................................................................................... 24
13.Removal of the drive fan............................................................................................................................. 25
14.Removal of the PBS fan ............................................................................................................................. 25
15.Removal of the optical unit ......................................................................................................................... 26
16.Removal of the POWER PCB ASSY.......................................................................................................... 27
17.Removal of the lamp power unit................................................................................................................. 28
18.Removal of the FILTER PCB ASSY and INLET PCBASSY....................................................................... 28
19.Removal of the POWER SUB PCB ASSY.................................................................................................. 29
20.Removal of the lamp fan............................................................................................................................. 30
21.Removal of the LCD fan ............................................................................................................................. 30
22.Removal of the exhaust fan........................................................................................................................ 31
23.Removal of the lens shift motor.................................................................................................................. 31
24.Removal of the lamp box............................................................................................................................ 32
LAMP REPLACEMENT......................................................................................................................................... 32
LEAD DRESS........................................................................................................................................................ 33
PACKING............................................................................................................................................................... 38
– FILE “MAINTENA” –
LAMP REPLACEMENT......................................................................................................................................... 1
MAINTENANCE .................................................................................................................................................... 3
HOW TO USE THE LAMP JIG.............................................................................................................................. 4
DUST ON LCD PANEL.......................................................................................................................................... 5
RESET OF THE THERMAL PROTECTOR........................................................................................................... 5
SERVICE COMMANDS ........................................................................................................................................ 6
Display the operation status screen................................................................................................................. 6
Reset to the factory settings............................................................................................................................ 6
Reset the lamp operating time......................................................................................................................... 6
LIFE TIME OF THE CONSUMABLE PARTS ........................................................................................................ 7
FUNCTION MENU(SETTING MENU ONLY FOR SERVICE)............................................................................... 8
REPLACEMENT OF THE MAIN PCB ASSY......................................................................................................... 9
REPLACEMENT OF THE TERMINAL PCBASSY................................................................................................ 10
GAMMAADJUSTMENT(WHITE BALANCE ADJUSTMENT) ............................................................................... 10
UNIFORMITY DATATRANSFER.......................................................................................................................... 12
COLOR UNIFORMITYADJUSTMENT ................................................................................................................. 13
DOWNLOAD OF THE FIRMWARE....................................................................................................................... 15
CRITERIA OF THE DEFECT PIXELON THE LCD PANEL(FOR REFERENCE PURPOSE) .............................. 16
ABOUT LASER BEAM.......................................................................................................................................... 18

- 5 -
– FILE “ELCTADJ” –
ELECTRICALADJUSTMENTS............................................................................................................................. 1
Necessary Equipment and Connecting ........................................................................................................... 1
Test Signal....................................................................................................................................................... 1
Adjustment with Microsoft®Windows®95/98/Me/XP Operating System......................................................... 2
Adjustment Procedures ................................................................................................................................... 3
– FILE “DIAGNO” –
DIAGNOSIS INFORMATION................................................................................................................................. 1
DIAGNOSTIC SOFTWARE,TO READ WARNING HISTORY(PCGC8 Ver.2)....................................................... 3
SPECIFICATION OF RGB SIGNALS IN EACH COMPUTER MODE OF THE PROJECTOR.............................. 5
– FILE “DIAGFLOW” –
DIAGNOSIS FLOW CHART.................................................................................................................................. 1
Image system .................................................................................................................................................. 1
Power source system 1 ................................................................................................................................... 2
Power source system 2 ................................................................................................................................... 3
Power source system 3 ................................................................................................................................... 4
– FILE “PCCONTRL” –
Controling the prijector using a personal computer............................................................................................... 1
– FILE “PARTSLST” –
PARTS LIST.......................................................................................................................................................... 1
PCB LOCATION .............................................................................................................................................. 2
EXPOSED VIEW............................................................................................................................................. 3
LVP ASSY .................................................................................................................................................. 3
Chassis 1 ASSY......................................................................................................................................... 4
Chassis 2 ASSY......................................................................................................................................... 5
Bottom case unit ........................................................................................................................................ 6
Terminal ASSY........................................................................................................................................... 6
Optical unit 1.............................................................................................................................................. 7
Optical unit 2.............................................................................................................................................. 8
PACKING......................................................................................................................................................... 9
ELECTRICAL PARTS AND OTHERS.............................................................................................................. 10
– FILE “SCHEMATC” –
IC BLOCK DIAGRAMS
SCHEMATIC DIAGRAMS
PRINTED CIRCUIT BOARD PARTS LAYOUT

- 1 -
DIAGNOSIS FLOW CHART
Image system
The terminal shield is used as GND when the terminal voltages and the waveforms are checked.
When replacing the PCB or the optical unit, follow the instructions in the service manual.
Is the lamp lit?
Is the indication of LEDs normal after power-on?
(POWER : Green, STATUS : Green)
Is the proper video signal supplied?
Is the image projected correctly?
NO
YES
NO
YES
NO
YES
Malfunction of the PCB-MAIN or the PCB-DRIVE.
Check the voltage waveforms of the SV, and SW
connectors on the PCB-MAIN respectively.
Check the voltage waveforms of the DR, DG,and DB
connectors on the PCB-DRIVE respectively.
* Malfunction of the LCD panel when the
above-mentioned voltage waveforms are OK.
Malfunction of the analog/digital circuit around the input
terminal of the computer.
[Analog input] (PCB-TERMINAL/PCB-MAIN)
Check the video signal circuits around J600, J603,
IC610 (PCB-TERMINAL), and IC6A0 (PCB-MAIN).
Check the sync signal circuits around J600, J603,
IC551, IC552, IC561 (PCB-TERMINAL), and IC6A0
(PCB-MAIN).
[DVI-D input]
Check the video signal circuits around J6P0, and
IC6A0.
Check the DDC interface circuits around J6P0, IC6M0,
and IC6C5.
Malfunction of the circuit around the video
input terminal.
Check the video signal circuits around J210,
J211, IC230, IC231 (PCB-TERMINAL), and
IC2A0 (PCB-MAIN).
A malfunction has occurred in the digital signal processing circuit.
Check the digital signal circuit around IC440.
(SDRAM IC400, IC401, IC402, IC403)
Images are not
projected properly.
Is the menu projected
normally?
NO
Are the full-white,
full-black, monochrome
R, G, and B test signals
projected normally?
Are images from
the computer
projected normally?
Are video images
projected normally?
!
!
!
Malfunction of the PCB-DRIVE.
Are the DR, DG, and DB connectors inserted properly?
Is the voltage at the DP connector OK?

- 2 -
Power source system 1
Has the FUSE
(F9F1) blown? YES
NO
Replace the lead wire.
Malfunction of the MAIN PCB ASSY
or KEY PCB ASSY.
Malfunction of the MAIN PCB ASSY.
Malfunction of the PREAMP PCBASSY or the KEY PCBASSY.
YES
NO
NO
YES
NO
YES
LED doesn't illuminate.
Check the STBY5.
YES
The projector does not
enter the stand-by mode.
Check for any failure on the POWER PCB ASSY,
then replace the parts.
(Check especially D900, Q900, Q901, Q902,
Q905, IC9M0 and IC900.)
Is the lead wire
PB-RB or RD-SD
broken?
Is the pin No. 3
of the SD
connector 5 V?
Remove the
SD connector
from the MAIN
PCB ASSY.
Is the pin No. 3
of the RD
connector 5 V?
Check the circuits around IC950,
IC951, and PC950, and replace them,
if necessary. (Especially check Z952. )
INLET PCB ASSY
MAIN PCB ASSY POWER PCB ASSY
Replace the
MAIN PCB ASSY and
check if the product enters
the stand-by
mode.
NO
The terminal shield can be used as GND when the terminal voltages and the waveforms on the
secondary side are checked.
(Do not use a heat dissipation board as GND.)
Is the PP,PF-RF
or RD-SD connectors
inserted properly?
NO
YES
Insert the connectors properly.

- 3 -
Power source system 2
NO
YES
NO
The terminal shield can be used as GND when the terminal voltages and the waveforms on the
secondary side are checked.
(Do not use a heat dissipation board as GND.)
Connect the lead wire correctly,
or replace it.
When diagnosed as a
STBY5 power error.
Is the RD-SD
lead wire OK?
Remove the SD connector
from the MAIN PCB ASSY.
Is the pin No. 6 of
the RD connector
-6 V or less?
YES
Malfunction of the MAIN PCB ASSY .
Check the circuits around D983 (on the
POWER
PCB ASSY ), and replace it,
if necessary.

- 4 -
Power source system 3
NO
YES
NO
YES
YES
NO
YES
Malfunction of the the MAIN PCB ASSY.
Connect the lead wires correctry,
or replace them.
The lamp does not light.
Does the lamp light?
NO
Remove the MAIN PCB ASSY and
connect the
LAMP JIG .
Turn on [FAN-ON], and [LAMP-ON] of the
LAMP JIG .
Remove the RE-CN1 lead wire and
turn on
[FAN-ON] of the LAMP JIG.
Is the voltage between
the pins No. 1 and No.
3 of the RE connector
370 V?
Malfunction of the LAMP
POWER UNIT.
Check the circuit around
Z900, IC900, and PC901.
Is the voltage of the
pin No. 10 of IC9M0
17.5 V or more?
Malfunction of the PFC circuit.
Check the circuits around
IC9M0, Q900, Q901, and Q902.
POWER PCB ASSY
Is the lead wire or
connector between the
POWER PCB ASSY and
LAMP POWER UNIT
OK?
POWER PCB ASSY
The terminal shield can be used as GND when the terminal voltages and the waveforms on the
secondary side are checked.
(Do not use a heat dissipation board as GND.)
When measuring the voltage on the primary side, use the negative (-) terminal of C903 as GND.

- 1 -
DIAGNOSIS INFORMATION
Outline of self-diagnosis function
This projector is provided with the self-diagnosis function. In case of any failure, the LED at the top of the projector will indicate
the failure. There are two ways for diagnosis.
1. Connect a personal computer to the projector. Then, input [00~CHK] from the hyper-terminal window of the personal com-
puter during stand-by.
2. Connect a personal computer and click the “diagnosis” button of PCGC, the diagnostic software to read the warning history.
Note: Diagnosis can be also carried out by turning on the main power and then turning on the power of the operation panel.
However, as the diagnosis items are different and it may cause a secondary failure, carry out the diagnosis in either of
the above-mentioned ways in most cases.
Diagnosis result indication
LED indication and failures are described in the following table. LED can be reset “automatically” or “by turning on/off of the
main power” after the failure is corrected.
LED Error Indication List --- : LED off Orange : Both Red and Green light
Preferen-
tial order
LED Indication Symptom Failure Check Point Reset
POWER STATUS PCB Reference
1 --- ---
STBY5 is not
supplied.
AC system (Primary power source)
failure INLET F9F1
Unplug and plug
the power cord.
Secondary power source failure POWER SD connector 3pin
(STBY5) , Z972
Unplug and plug
the power cord.
STBY5 is
supplied LED failure MAIN D7R0
Unplug and plug
the power cord.
2
Red / green
alternately
--- No power-on Lamp cover open MAIN SL connector
LAMP COVER Auto
Filter cover open MAIN SL connector
Filter cover Auto
3
Red / green
alternately
red
flash
No power-on
Cooling fan (exhaust) stopped MAIN SX connector
Unplug and plug
the power cord.
red
flash 2 Cooling fan (lamp) stopped POWER
SUB NR connector
Unplug and plug
the power cord.
red
flash 3 Cooling fan (power) stopped POWER
SUB NA connector
Unplug and plug
the power cord.
red
flash 4 Cooling fan (PBS) stopped POWER
SUB NB connector
Unplug and plug
the power cord.
red
flash 5 Cooling fan (intake) stopped POWER
SUB NK connector
Unplug and plug
the power cord.
red
flash 6 Cooling fan (drive) stopped POWER
SUB ND connector
Unplug and plug
the power cord.
4
Red / green
alternately
Green
No power-on
I2C bus failure of E2PROM MAIN IC445, SCL0, SDA0
Unplug and plug
the power cord
Green
flash I2C bus failure of GPIOO MAIN IC754, SCL0, SDA0
Unplug and plug
the power cord
Green
flash 6 I2C bus failure of WatchDog MAIN IC444, SCL0, SDA0
Unplug and plug
the power cord
5
Red / green
alternately
Orange No power-on NR8R power failure POWER,
MAIN SD connector 2 pin (NR8R)
Unplug and plug
the power cord
6
Red / green
alternately
Orange
flash No power-on Disconnected thermister MAIN SZ connector
Unplug and plug
the power cord
7 Red Red No power-on Power-on is prohibited because of the end of the lamp life.
(2000 hours or more)
Replace the lamp and reset the lamp
operating time. (Press and hold the
Power, , and buttons on the pro-
jector together for 3 seconds.)
Manual

- 2 -
Preferen-
tial order
LED Indication Symptom Failure Check Point Reset
POWER STATUS PCB Reference
8 Red
Orange
flash5
No power-on High temperature of the intake air
(outside air) Temperature around the top of the air inlet fan Auto
No power-on
after power-
off during
power-on
High temperature of the intake air
(outside air) Temperature around the top of the air inlet fan Auto
Orange
flash 3
No power-on
after power-
off during
power-on
High temperature around the lamp Temperature around the top of the
lamp Auto
9 Red
Green
flash
No power-on
for one minute
Lamp fails to illuminate. Auto
Green
flash2
No power-
on for one
minute
Lamp goes out. Auto
Damaged lamp Damaged lamp Manual
10 Red/ Green al-
ternately
Green
flash 3
RGB signal
isn't displayed.
I2C bus failure of A/D MAIN IC6A0, SCL1, SDA1 Auto
Green
flash 4
VIDEO signal
isn't displayed.
I2C bus failure of DECODER MAIN IC2A0, SCL1, SDA1 Auto
Green
flash 5
VIDEO sig-
nal isn't dis-
played.
I2C bus failure of Uniformity Cor-
rection IC DRIVE
IC4W3,
IC801-IC802,
IC8A1-IC8A2,
IC8M1-IC8M2,
SCL2(HSCL1),SDA2(HSDA1)
Auto
Green
flash 7
VIDEO signal
isn't displayed.
I2C bus failure of AUDIO TERMINAL IC320,AUSDA,AUSCL Auto
11
Red Red flash
Warning
indicated by the
LED during stby.
The end of the lamp life is near.
(1500 to 2000h.) Manual
Green Red/ Green al-
ternately
Warning indicated
by the LED during
power-on.
The end of the lamp life is near.
(1500 to 2000h.) Manual
12 Green
Green flash
(cycle : 1s)
No power-off
for one minute
after power-on
For protect the lamp, no power-off
for one minute after power-on Auto
13 Red Green flash
(cycle : 1s)
No power-
on for one
minute
Power-on is prohibited during the
lamp cooling time after power-off. Auto
14 Red Green flash
(cycle : 2s)
Displayed for 60
- 80 sec after
power-off. Power
on is possible
After power-off, power-on is pos-
sible during the lamp cooling time,
but only FAN rotates. Auto

- 3 -
DIAGNOSTIC SOFTWARE, TO READ WARNING HISTORY (PCGC8 Ver.2)
*Pcgc8 Ver.2 is upwardly compatible with Pcgc8 Ver.1.
1.Preparation
PCGC8 supports Microsoft®Windows®95/98/Me/XP. Use a
PC with Windows®95/98/Me/XP installed.
1. Copy the folder named “Pcgc8.2 (English)”.
2. Connect the PC with the projector by RS-232C cable (ser-
vice component).
3. Double click “Pcgc8e.exe” in the folder named “Pcgc8.2
(English)” for starting the program.
2.Operation
(1) Model name selection dialog window
Starting Pcgc8 displays the model name selection dialog
window. Select the model name you want to use and press
the [OK] button to display the main dialog window. Press the
[Cancel] button to exit the application.
(2) Main dialog window
1. The main dialog window displays the information stored
in the projector (model name, serial No., software version,
etc.) and the service menu information. Information dis-
played in this window depends on the selected models.
2. Some PCs may not be able to connect to the right COM
port. In such cases, press the Change COM PORT button
to switch the COM port. Refer to (4) Switching the COM
port.
3. Press any of the [Warning History 1], [Warning History 2],
or [Warning History 3] button to display the warning dialog
window containing the detailed error data.
4. Press the [DIAGNOSIS] button to start self-diagnosis.
(Not available during power on and when an error occurs.)
Warning Status :Present abnormal state will be displayed
.After repair, this information will disap-
pear.
Warning History1 : The latest warning history data are stored
in the Warning History 1. The data remain
after the error is corrected.
Warning History 2 : The second oldest warning history data
are stored in the Warning History 2.
Warning History 3 : The oldest warning history data are stored
in the Warning History 3.
Note: When the power is turned off because of any error,
the warning history data are saved. Or, only when
an error occurs during power on or when an error is
detected during self-diagnosis (or immediately after
pressing the DIAGNOSIS button), the warning his-
tory data are saved. (The warning history data aren’
t saved when the stand-by power fails during the
stand-by mode. In this case, LED warning indication
will appear. Check the error data by the warning sta-
tus.)
Goes to the main
dialog window. Exits this application.
Click and select a model name .
FL7000U
Exits the application.Starts self-diagnosis.
Displays the
Warning History 3.
Displays the
Warning History 2.
Displays the
Warning History 1.
Displays the information about the connected device.
The contents depend on the selected model. Displays the current date and time when the error is corrected.
Switches the COM
port.
Displays the
Warning Status
Warning Status
FL7000U
Displays the selected
model name
XL6500U
ver1.0 XL6500
Model name selection dialog window
Main dialogue window
The information to
be displayed var-
ies depending on
the model.
When use XL6500U
or XL6500LU, select
FL7000U.

- 4 -
(3) Warning dialog window
1. The warning dialog window displays the error location.
2. “ERROR TIME (SET TIME)” displays the time when the
warning history data were saved (,or the SET TIME in the
service menu). “ERROR TIME” and “SET TIME” shown in
the main dialog window are useful to know when the error
occurred.
3. Pressing the Detail button activates Notepad and opens
the file containing the information about the set and the
warning data. To prevent writing over this file, be sure
to select “Save As” from “File” of the menu in Notepad to
save the file. The name of the file being displayed should
be “DataTemp.txt.”
4. Pressing the [Warning Clear] button displays the confirma-
tion message window, which asks you whether you will
clear the warning history data. Press the [OK] button to
clear the warning history data or the [Cancel] button to
cancel clearing them.
5. Pressing the [Back] button displays the main dialog win-
dow again and carries out communication with the projec-
tor again to get information from it.
(4) Switching the COM port
1. Select the serial port to which the cable is being connect-
ed. When the selected serial port isn’t available or doesn’t
exist, an error message window is displayed.
2. Press the [OK] button to switch the COM port. When the
serial port is switched correctly, communication with the
projector is carried out again to get information from it.
COM port switching dialog window
Goes back to the
main dialog window.
Clears all the
warning history data.
Creates a
detailed report.
All the error items are
displayed in red and their
check boxes are checked.
Indicates which data of the
Warning Status 1, 2, or 3 are
displayed.
Displays the SET TIME
when the warning history
data were saved.
Warning dialog window
The information to
be displayed var-
ies depending on
the model.

- 5 -
SPECIFICATION OF RGB SIGNALS IN EACH COMPUTER MODE OF THE PROJECTOR
Specification of RGB signals in each computer mode of the projector
Signal mode Resolution
(H x V)
Horizontal
frequency (kHz)
Vertical frequency
(Hz)
Normal mode
(H x V)
Real mode
(H x V)
TV60, 480i (525i) 720 x 480 15.73 59.94 1024 x 768 640 x 480 *1
TV50, 576i (625i) 720 x 576 15.63 50.00 1024 x 768 768 x 576 *1
1080i60 (1125i60) 1920 x 1080 33.75 60.00 1024 x 576 1024 x 768 *1, *2
1080i50 (1125i50) 1920 x 1080 28.13 50.00 1024 x 576 1024 x 768 *1, *2
480p (525p) 720 x 480 31.47 59.94 1024 x 768 640 x 480 *1, *2
576p (625p) 720 x 576 31.25 50.00 1024 x 768 768 x 576 *1, *2
720p60 (750p60) 1280 x 720 45.00 60.00 1024 x 576 1024 x 720 *2, *3
720p50 (750p50) 1280 x 720 37.50 50.00 1024 x 576 1024 x 720 *2, *3
1080p60 (1125p60) 1920 x 1080 67.50 60.00 1024 x 576 1024 x 768 *2, *3
1080p50 (1125p50) 1920 x 1080 56.25 50.00 1024 x 576 1024 x 768 *2, *3
CGA70 640 x 400 31.47 70.09 1024 x 640 640 x 400
CGA84 640 x 400 37.86 84.13 1024 x 640 640 x 400
CGA85 640 x 400 37.86 85.08 1024 x 640 640 x 400
VGA60 640 x 480 31.47 59.94 1024 x 768 640 x 480 *2
VGA72 640 x 480 37.86 72.81 1024 x 768 640 x 480
VGA75 640 x 480 37.50 75.00 1024 x 768 640 x 480
VGA85 640 x 480 43.27 85.01 1024 x 768 640 x 480
SVGA56 800 x 600 35.16 56.25 1024 x 768 800 x 600
SVGA60 800 x 600 37.88 60.32 1024 x 768 800 x 600 *2
SVGA72 800 x 600 48.08 72.19 1024 x 768 800 x 600
SVGA75 800 x 600 46.88 75.00 1024 x 768 800 x 600
SVGA85 800 x 600 53.67 85.06 1024 x 768 800 x 600
SVGA95 800 x 600 59.97 94.89 1024 x 768 800 x 600
XGA60 1024 x 768 48.36 60.00 1024 x 768 1024 x 768 *2
XGA70 1024 x 768 56.48 70.07 1024 x 768 1024 x 768
XGA75 1024 x 768 60.02 75.03 1024 x 768 1024 x 768
XGA85 1024 x 768 68.68 85.00 1024 x 768 1024 x 768
SXGA70a 1152 x 864 63.85 70.01 1024 x 768 1024 x 768
SXGA75a 1152 x 864 67.50 75.00 1024 x 768 1024 x 768
SXGA85a 1152 x 864 77.49 85.06 1024 x 768 1024 x 768
WXGA60 1280 x 768 47.78 59.87 1024 x 614 1024 x 768 *2
WXGA60a 1280 x 800 49.70 59.81 1024 x 640 1024 x 768 *2
WXGA60b 1360 x 768 47.71 60.02 1024 x 578 1024 x 768
WXGA60c 1366 x 768 47.50 59.75 1024 x 576 1024 x 768
WXGA+60 1440 x 900 55.94 59.89 1024 x 640 1024 x 768
SXGA60b 1280 x 960 60.00 60.00 1024 x 768 1024 x 768
SXGA75b 1280 x 960 75.00 75.00 1024 x 768 1024 x 768
SXGA85b 1280 x 960 85.94 85.00 1024 x 768 1024 x 768
SXGA60 1280 x 1024 63.98 60.02 960 x 768 1024 x 768 *2
SXGA75 1280 x 1024 79.98 75.02 960 x 768 1024 x 768
SXGA85 1280 x 1024 91.15 85.02 960 x 768 1024 x 768
SXGA+60 1400 x 1050 63.98 60.02 1024 x 768 1024 x 768
1400 x 1050 65.32 59.98 1024 x 768 1024 x 768 *2
SXGA+75 1400 x 1050 82.28 74.87 1024 x 768 1024 x 768
WSXGA+60 1680 x 1050 65.29 59.95 1024 x 640 1024 x 768
MAC13 640 x 480 35.00 66.67 1024 x 768 640 x 480
MAC16 832 x 624 49.72 74.55 1024 x 768 832 x 624
MAC19 1024 x 768 60.24 75.02 1024 x 768 1024 x 768
HP75 1024 x 768 62.94 74.92 1024 x 768 1024 x 768
HP72 1280 x 1024 78.13 72.00 960 x 768 1024 x 768
SUN66a 1152 x 900 61.85 66.00 984 x 768 1024 x 768
SUN76a 1152 x 900 71.81 76.64 984 x 768 1024 x 768
SUN66 1280 x 1024 71.68 66.68 960 x 768 1024 x 768
SUN76 1280 x 1024 81.13 76.11 960 x 768 1024 x 768
SGI72 1280 x 1024 76.92 72.30 960 x 768 1024 x 768
SGI76 1280 x 1024 82.01 76.00 960 x 768 1024 x 768
UXGA60 1600 x 1200 75.00 60.00 1024 x 768 1024 x 768 *2
*1: The PinP mode and the MAGNIFY mode don’t function with this signal.
*2: Available with the signal for the DVI-D terminal.
*3: You can select from two adjustment modes by pressing the AUTO POSITION button. (For details, see page 16.) When the
VIDEO SIGNAL mode is selected, the PinP mode and the MAGNIFY mode don’t function.

- 1 -
Program ROM : LC6 Ver. 2.1
Program
No. Pattern
15
Every other horizontal line (Red)
16 Every other horizontal line (Green)
17 Every other horizontal line (Blue)
29 White / black signal
30 SMPTE (White) *
* Though the signal generator supplies this signal
as a green signal, the projector receives it as
Y/CB/CR signal. Therefore, this signal is pro-
jected as a full white SMPTE signal.
Timing of XGA signal (Vertical frequency 60 Hz)
DOT-CLOCK [MHz] 65.0 VP [H] 806
HP [DOT] 1344 VDISP [H] 768
HDISP [DOT] 1024 VDW [H] 6
HDW [DOT] 136 VBP [H] 29
HBP [DOT] 160 Interlace ---
Signal polarity HD :-, VD : -
Timing of NTSC (480i) signal (Vertical frequency 59.94 Hz)
DOT-CLOCK [MHz] 13.5 VP [H] 525
HP [DOT] 858 VDISP [H] 480
HDISP [DOT] 720 VDW [H] 3
HDW [DOT] 64 VBP [H] 14
HBP [DOT] 58 Interlace Interlace
Signal polarity HD :nothing VD : nothing
Sync on green : -
ELECTRICAL ADJUSTMENTS
All the electrical adjustments for this projector require the com-
munication program [Hyper Terminal] of Microsoft
®
Windows
®
95/98/Me/XP operating system.
Necessary Equipment and Connecting
Connect the following equipment as shown in the right figure.
• This projector
• Personal computer (running Microsoft®Windows®95/98/
Me/XP operating system)
• RS-232C cable
• Signal generator (equivalent to VG-812)
• PC monitor
Test Signal
• XGA signal (vertical frequency:60Hz) / NTSC signal (verti-
cal frequency:59.94Hz)
The timing and patterns for the adjustment are as follows :
HDISP
HP
HBP
HDW VDISP
VP
VBP
VDW
HD signal
H Timing V Timing
VD signal
Personal
computer
PC
monitor
COMPUTER IN
terminal
Projector
Signal
generator
RS-232C cable
RS-232C input
terminal

- 2 -
Adjustment with Microsoft®Windows®95/98/Me/XP Operating System
1. Starting
1. Start Windows®95/98/Me/XP.
2. Select [Start] - [Programs] - [Accessories] - [Communications] - [Hyper Terminal] in order.
The [Connection Description] window will open.
Note:
You can select [Start] - [Programs] - [Accessories] - [Hyper Terminal] in order and double-click [hypertrm.exe] in Windows
®
95.
2. Hyper Terminal Setting
1. Make settings on the [Connection Descrip-
tion] window referring to the table on the
right.
Item Setting
Connection Port (COM1-COM4)
Port settings : Bits per second
: Data bits
: Parity
: Stop bits
: Flow
9600
8
None
1
control
Settings : Emulation VT100
ASCII setup : ASCII Sending
: ASCII Receiving
Send line ends with line feeds
Echo typed characters locally
Line delay :
1000 milliseconds
Character delay : 10 milliseconds
Append line feeds to incoming line ends
3. Adjustment
Type the adjustment command and the adjustment value on the Hyper Terminal window in capital alphanumeric letters, and
press the [ENTER] key.
4. Writing Adjustment Value
Type the adjustment command and the adjustment value on the Hyper Terminal window in capital alphanumeric letters, and
press the [ENTER] key.
Note: This step is not necessary for “ADC offset/gain adjustment,” which is carried out automatically.
5. Closing
Click on the Close button in the upper-right corner of the window to exit the Hyper Terminal.
Close all the opening windows before exiting Windows®95/98/Me/XP.

- 3 -
[A/D Pre-Amplification Circuit]
1. ADC offset/gain adjust-
ment
To adjust the DC level and amplitude of the video signal at the time of ADC input.
Solid black, solid white, or incorrect color phase appear in the projected im-
age.
Measuring
instrument -----
Test point -----
EXT trigger -----
Measurement
range -----
Input signal Shown in the table
below
Input terminal COMPUTER 2
IN terminal
Adjustment purpose
Symptom when
incorrectly adjusted
* Enter the adjustment commands in capital alphanumeric letters.
1. Connect the projector with a PC running Microsoft®Windows®95/98/Me/XP operat-
ing system. (Refer to the figure on page 1.)
2. Start Microsoft®Windows®95/98/Me/XP.
3. Start the communication program [Hyper Terminal] on Microsoft®Windows®95/98/
Me/XP to open the Hyper Terminal window. (Refer to Hyper Terminal Setting on
page 2 for the settings.)
Offset/gain adjustment with the RGB signal supplied
4. Supply an XGA signal (White/black raster No. 29).
5. Enter [00~5] (the command for RGB input offset/gain adjustment) on the Hyper Ter-
minal window, and the adjustment proceeds automatically.
6. When the adjustment finishes, the return command [00~5111] is displayed on the
Hyper Terminal window. The last three digits of the return command indicate the
adjustment results of R, G, and B respectively from the left by 1 or 0. When the
adjustment has succeeded, 1 is displayed. When it has failed, 0 is displayed. Pos-
sible causes of failures in the adjustment are errors on the PCBs, wrong signals,
and wrong input selection.
Offset adjustment with the component video signal supplied
7. Supply an NTSC signal (SMPTE (White), No. 30).
8. Enter [00~AC1] (the command for video input clamp adjustment) on the Hyper Ter-
minal window, and the adjustment proceeds automatically.
9. When the adjustment finishes, the return command [00~AC111] is displayed on
the Hyper Terminal window. The last two digits of the return command indicate the
adjustment results of CR and CB respectively from the left by 1 or 0. When the
adjustment has succeeded, 1 is displayed. When it has failed, 0 is displayed. Pos-
sible causes of failures in the adjustment are errors on the PCBs, wrong signals,
and wrong input selection.
Adjustment Procedures
No. Pattern
29 White/black raster
30 SMPTE (White)*
* Though the signal generator sup-
plies this signal as a green signal,
the projector receives it as Y/CB/CR
signal. Therefore, this signal is pro-
jected as a full white SMPTE signal.

- 4 -
[Liquid Crystal Panel Driving
Adjustment Circuit]
2. Flicker
To remove flickers form the screen.
Flickers appear.
Measuring
instrument -----
Test point -----
EXT trigger -----
Measurement
range -----
Input signal Shown in the table
below
Input terminal COMPUTER 2
IN terminal
Adjustment purpose
Symptom when
incorrectly adjusted
* Make this adjustment only when flickers remarkably appear on the screen.
* Enter the adjustment commands and adjustment values of the hexadecimal number
in capital alphanumeric letters.
* Carry out this adjustment after running the projector for 2 minutes or more supply-
ing the specified test signal to it.
1. Connect the projector with a PC running Microsoft®Windows®95/98/Me/XP operat-
ing system. (Refer to the figure on page 1.)
2. Start Microsoft®Windows®95/98/Me/XP.
3. Start the communication program [Hyper Terminal] on Microsoft®Windows®95/98/
Me/XP to open the Hyper Terminal window. (Refer to Hyper Terminal Setting on
page 2 for the settings.)
4. Set the following items in the IMAGE menu.
CONTRAST 0
BRIGHTNESS 0
COLOR TEMP STANDARD
5. Project an image onto the screen.
6. Enter the flicker adjustment mode command [00~3100008AFC] on the Hyper Termi-
nal window to make the flickers easy to view.
Red
7. Supply an XGA signal (Every other horizontal line (Red), No. 15).
8. Enter the adjustment command [00~217 ] on the Hyper Terminal window to mini-
mize the red flickers. For ,select a value that reduces the flickers most*. (Enter a
value from [56] to [72] (HEX).)
9. Enter the writing command [00~1044 ] on the Hyper Terminal window to write the
new value into the E2PROM.
Enter the value that was entered in step 8 in .
Green
10.Supply an XGA signal (Every other horizontal line (Green), No. 16).
11. Enter the adjustment command [00~237 ] on the Hyper Terminal window to mini-
mize the green flickers. For ,select a value that reduces the flickers most*. (Enter
a value from [56] to [72] (HEX).)
12.Enter the writing command [00~1045 ] on the Hyper Terminal window to write the
new value into the E2PROM.
Enter the value that was entered in step 11 in *.
Blue
13.Supply an XGA signal (Every other horizontal line (Blue), No. 17).
14.Enter the adjustment command [00~257 ] on the Hyper Terminal window to mini-
mize the green flickers. For , select a value that reduces the flickers most*. (Enter
a value from [56] to [72] (HEX).)
15.Enter the writing command [00~1046 ] on the Hyper Terminal window to write the
new value into the E2PROM.
Enter the value that was entered in step 14 in *.
16.Enter the flicker adjustment mode cancel command [00~310000AAFC] on the Hy-
per Terminal window to go back to the regular screen.
* When the command is sent successfully, such command is returned as it is after
sending. You can check the current value by sending the command without entering
any value in .
No. Pattern
15
XGA Every other horizontal line (Red)
16 XGA Every other horizontal line (Green)
17 XGA Every other horizontal line (Blue)
Every other horizontal line pattern

- 1 -
Microsoft Windows 95/98/Me/XP are either registered trademarks or trademarks of Microsoft Corporation in the United States
and/or other countries.
Other brand or product names are trademarks or registered trademarks of their respective holders.
TRADEMARK, REGISTERED TRADEMARK
Many electrical and mechanical parts in the projector have special safety related characteristics. These characteristics are often
not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement compo-
nents rated for higher voltage, etc. Replacement parts which have these special safety characteristics are identified in this ser-
vice manual. Electrical components having such features are identified by shading on the schematic diagram and the parts list
of this service manual and by the supplementary sheet for this chassis to be issued subsequently.
PRODUCT SAFETY NOTICE

- 2 -
Europe, other than USA
NOTICE: Observe all cautions and safety related notes located inside the cabinet and on the chassis.
Warning
1. An isolation transformer should be used between the projector and the AC supply point before any test/service is performed
on a LIVE chassis projector.
2. Operation of this projector outside the cabinet or with the cover removed, involves a shock hazard from the projector power
supplies. Work on the projector should not be attempted by anyone who is not thoroughly familiar with precautions neces-
sary when working on high voltage equipment.
3. When service is required, observe the original lead dressing. Extra precaution should be given to assure correct lead dress-
ing in the high voltage area. Where a short-circuit has occurred, replace those components that indicate evidence of over-
heating.
Leakage current cold check
Before returning the projector to the customer, it is recommended that leakage current be measured according to the following
methods.
With the AC plug removed from the AC source, place a jumper across the two AC plug prongs. Turn the projector AC switch on.
Using an 500 V D.C. Insulation Tester, connect one lead to the jumpered AC plug and touch the other lead to each exposed met-
al part (screwheads, etc.), particularly any exposed metal part having a return path to the chassis. Exposed metal parts having a
return path to the chassis should have a minimum resistance reading of 4 megohm. Any resistance below this value indicates an
abnormality which requires corrective action.
V
S1
S2
GH
(grounding)
open
Grounding supply conductor B
Insulating table
Projector
A
AC milliammeter
Figure
A
C 100 to 240V
North america
NOTICE: Observe all cautions and safety related notes located inside the cabinet and on the chassis.
Warning
1. Operation of this projector outside the cabinet or with the cover removed presents a shock hazard from the projector power
supplies.
2. When a short-circuit has occurred, replace those components that indicate evidence of overheating.
3. Grounding circuit continuity is vital for safe operation of equipment. Do not remove ground connection while the power cord
is still connected to the supply. Disconnect supply before servicing.
Leakage current check
Before returning the projector to the customer, it is recommended that leakage current be measured according to the follow-
ing methods.
1. Cold check
With the AC plug removed from the AC 100 to 240 V, place a jumper across the two AC plug prongs. Turn the projector AC
switch on. Using an ohm-meter, connect one lead to the AC plug and touch the other lead to each exposed metal part (metal
cabinet, screwheads, metal overlays, etc.), particularly any exposed metal part having a return path to the chassis. Exposed
metal parts having a return path to the chassis should have a minimum resistance reading of 1 megohm. Any resistance be-
low this value indicates an abnormality which requires corrective action. Exposed metal parts not having a return path to the
chassis will indicate an open circuit.
2. Hot check
Use the circuit in figure to perform this test.
(1) With switch S1 open, connect the projector to the measuring circuit. Immediately after connection, measure the leakage
current using both positions of switch S2, and with the switching devices in the projector in all of their operating positions.
(2) Switch S1 is then closed, energizing the projector. Immediately after closing the switch, measure the leakage current us-
ing both positions of switch S2, and with the switching devices in the projector in all of their operating positions. Current
measurements of items (1) and (2) are to be repeated after the projector has reached thermal stabilization. The leakage
current must not be more than 0.5 milliampere.
SAFETY PRECAUTIONS