Mitsubishi Electric XL1550U Use and maintenance manual

1
LCD Projector
XL2550U/XL1550U
Controlling the projector using a personal computer
This projector can be controlled by connecting a personal computer with RS-232C terminal.
PC-controllable functions:
• Turning the power ON or OFF
• Changing input signals
• Inputting commands by pressing the buttons on the control panel and remote control
• Menu setting
Connection
RS-232C cable SERIAL
D-SUB 9-pin D-SUB 9-pin
To RS-232C
terminal
Important:
• Connect the computer with the projector on a one-to-one basis.
• Make sure that your computer and projector are turned off before connection.
• Boot up the computer first, and then plug the power cord of the projector.
(If you do not follow this instruction, the Com port may not function.)
• Adapters may be necessary depending on the PC connected to this projector. Contact your dealer for details.
1. Interface
1.1 Pin assignment of SERIAL terminal (D-SUB 9-pin)
Pin No. Name I/O
1 OPEN
2 RXD IN
3 TXD OUT
4 OPEN
5 GND
6 OPEN
7 OPEN
8 OPEN
9 OPEN
1.2 Communications format
PROTOCOL RS-232C
BAUD RATE 9600 [bps]
DATA LENGTH 8 [bits]
PARITY BIT NONE
STOP BIT 1 [bit]
FLOW CONTROL NONE
This projector uses RXD, TXD and GND lines for RS-232C control.
For RS-232C cable, the reverse type cable should be used.

2
2. Control command diagram
The command consists of the address code, function code, data code, and end code. The length of the command
varies among the functions.
Address code Function code Data code End code
ASCII ‘30h’ 30h’ Function Data ‘0Dh’
Character 00 Function Data
[Address code] 00 (In ASCII code, ‘30h’ ‘30h’) fixed.
[Function code] A code of each fixed control move.
[Data code] A code of each fixed control data (number) and not always indicated.
[End code] (In ASCII code, ‘0Dh’) fixed.
3. Control sequence
Computer Projecto
r
1
2
3
4
Sequence Note
1Send the command from the
personal computer to the projector.
2
The projector will send a return
command after it receives an end
code.
If the projector does not receive commands
normally, that is, if the projector is not connected
physically or unable to receive commands, it does
not send out a return command.
The projector sends out a return command within
one second at the latest.
3The personal computer checks the command and confirms if the sent
command has been received or not.
Although the projector receives the commands, it
in some cases does not execute the commands.
4
Use the check command to see
if the projector has executed the
command.
This projector sends various codes other than the
return code. When having a control sequence by
RS-232C, reject other codes from the personal
computer.
• Although the projector sends out the return command, the command may not take effect in the following
cases.
(1) During signal switching
(2) In the process of the auto position
(3) After the power is turned on.
The projector receives no commands for about 20 seconds (or for 2 minutes at the longest if the lamp
does not light up promptly as the life is expiring.)
• When sending commands successively, wait to receive the return command of the current command before
sending a next command.
• The projector may not receive a command when the splash screen is being displayed immediately after turn-
ing on the power. Use command “00r10” to cancel the splash screen.
• While using the LAN terminals, the LAN functions take precedence.
• For the LAN terminals, the same commands as those for connecting with the TCP/IP (port number 63007) are
available. Note, however, that the response becomes slightly slower than when using the RS-232C terminals.
[Example] When turning the power ON. (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘21’ ‘0D’
00!
Command for POWER ON
‘30’ ‘30’ ‘21’ ‘0D’
00!
Command receipt confirmation
(Command echo back)
• The flowchart on the next page shows the recommended operating sequence for your reference to create a
program.

3
Sending out command
Awaiting response
from projector
Awaiting response
from projector
Checking execution of
command (sending out
check command)
Sending command again
No
YesYes
Yes
1
1
Less than
10 times
Projector error
Send out “00vER” to check error details.
Recover from error state.
0–3
To normal operation 4
Enter password.
Send out “00PASS****.”
Projector is functioning.
Use “00FNCOFF” to cancel the current function.
6 5
END
No response for
1 second or longer
No response for
1 second or longer
Sending command again
Number of trials
without response
Sending “00vST”
Checking response to “00vST”
[RS-232C control flowchart]
[Method of checking state of projector]
START
Check the following.
•The projector is not supplied with AC power.
→ Check that AC power cord is connected.
→ Turn on the power. (Turn on the circuit breaker or
main switch.)
•Not connected with the projector.
→ Check that the RS-232C cable is connected.
→ Check the RS-232C cable for electrical discontinuity.
•The projector is in the state of being unable to send out
a command.
→Use command “00vST” to check if the projector
operates normally.
Note: In the following conditions, the projector
does not respond even if it operates
normally.
• Immediately after turning on the power
(for about 20 seconds to 2 minutes)
• During switching signals (about 10
seconds)
• In the process of the auto position
(about 10 seconds)
• During locking the password
10th trial

4
4. Command list
4.1 Operation commands (Not executable in stand-by mode. When the commands for input select are sent
while the splash screen is being displayed, the splash screen is only canceled.)
The operation commands are used for the basic operation setting of this projector. They may not be executed
while the signals are changed. The operation commands have no data codes.
ITEM Function Note
Character ASCII
POWER ON ! 21h This command is invalid for 1 minute after the power is turned off.
POWER OFF " 22h This command is invalid for 1 minute after the power is turned on.
INPUT COMPUTER 1 _r1 5Fh 72h 31h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT COMPUTER 2 _r2 5Fh 72h 32h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT DVI _d1 5Fh 64h 31h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT VIDEO _v1 5Fh 76h 31h This command will not be executed in Stand-by mode or when the MUTE is executed.
INPUT S-VIDEO _v2 5Fh 76h 32h This command will not be executed in Stand-by mode or when the MUTE is executed.
[Example] When setting the input signal to COMPUTER 1. (Figures and symbols enclosed in quotation marks
are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘5F’ ‘72’ ‘31’ ‘0D’
00_r1
Command for setting the input signal
to COMPUTER 1
‘30’ ‘30’ ‘5F’ ‘72’ ‘31’ ‘0D’
00_r1
Command receipt confirmation
(Command echo back)
4.2 Reading command diagram
The projectors operating status, such as POWER-ON/OFF and the currently selected input terminal, etc. can be
monitored.
ITEM Character ASCII
Function Data (Receive) Function Data (Receive)
POWER ON vP 1 76h 50h 31h
POWER OFF vP 0 76h 50h 30h
INPUT COMPUTER 1 vI r1 76h 49h 72h 31h
INPUT COMPUTER 2 vI r2 76h 49h 72h 32h
INPUT DVI vI d1 76h 49h 64h 31h
INPUT VIDEO vI v1 76h 49h 76h 31h
INPUT S-VIDEO vI v2 76h 49h 76h 32h
POWER ON/OFF IMPOSSIBLE vPK 0 76h 50h 4Bh 30h
POWER ON/OFF POSSIBLE vPK 1 76h 50h 4Bh 31h
NO SIGNAL SUPPLIED vSM 0 76h 53h 4Dh 30h
SIGNAL SUPPLIED vSM 1 76h 53h 4Dh 31h
Use the following commands to obtain the values of the items in the INFORMATION menu.
ITEM Function Data (Receive)
Character ASCII
LAMP TIME (LOW) vLE 76h 4Ch 45h hhhhmm
RESOLUTION vRESO 76h 52h 45h 53h 4Fh HHHHxVVVV
VERTICAL FREQUENCY
vVFREQ 76h 56h 46h 52h 45h 51h ***.**
HORIZONTAL FREQUENCY vHFREQ 76h 48h 46h 52h 45h 51h ***.**
SYNC. TYPE vSYNCT 76h 53h 59h 4Eh 43h 54h 0 (NO SIGNAL), 3 (3wire), 4 (4wire),
5 (5wire), 6 (SCART)
“hhhh” and “mm” represent hours and minutes respectively.
“HHHH” and “VVVV” represent the horizontal and vertical resolutions respectively.
Use the following commands to obtain other information.
ITEM Function Data (Receive)
Character ASCII
Model name vMDL 76h 4Dh 44h 4Ch ****************(within 16 characters)
Serial number vS/N 76h 53h 2Fh 4Eh *******(within 7 characters)
Input source vSOUCE
76h 53h 4Fh 55h 43h 45h r1 r2 d1 v1 v2

5
ITEM Function Data (Receive)
Character ASCII
Projector status vST 76h 53h 54h 0 (Stand-by mode),
1
(Within 1 minute after POWER-ON (warm-up mode)),
2 (POWER-ON mode (including state of warning)),
3 (Cooling mode),
4
(Abnormal state (including shutdown due to an error)),
5 (State of functioning (menu display, dialog display,
MUTE, SPLIT, FREEZE)),
6 (Awaiting password entry)
Error status vER 76h 45h 52h Reading out error data (3 digits, hexadecimal
numbers, total 9 bits)
(MSB) xb1, xb2... xb8, xb9, 0, 0, 0 (LSB)
xb1: Fan error
xb2:
Lamp error (The lamp goes out or does not light.)
xb3: Lamp warning 1 (The lamp life has expired.)
xb4: Lamp warning 2 (The lamp life is expiring.)
xb5: Temperature error
xb6: The temperature warning is being indicated.
xb7: Lamp cover open error
xb8: Filter cover open error
xb9: States of other component abnormality
The PC sends the command without attaching the data code to it. On the other hand, the projector attaches to
the received command its current operating status as the data code and send it back to the PC.
[Example] When checking the currently selected input terminal (when the INPUT VIDEO is being selected).
(Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘76’ ‘49’ ‘0D’
00vl
Command for checking the input
terminal
‘30’ ‘30’ ‘76’ ‘49’ ‘76’ ‘31’ ‘0D’
00vlv1
Check result (VIDEO)
4.3 Remote commands (Not executable in stand-by mode. When the remote commands are sent while the
splash screen is being displayed, the splash screen is only canceled.)
Some remote control operations can be achieved by the remote command codes. The remote commands have
no data codes.
Button’s name on remote Function
Character ASCII
+/VOLUME r06 72h 30h 36h
-/VOLUME r07 72h 30h 37h
KEYSTONE r43 72h 34h 33h
EXPAND r02 72h 30h 32h
PinP r04 72h 30h 34h
MUTE ra6 72h 61h 36h
r53 72h 35h 33h
r2b 72h 32h 62h
r4f 72h 34h 66h
r59 72h 35h 39h
MENU r54 72h 35h 34h
ENTER r10 72h 31h 30h
AUTO POSITION r09 72h 30h 39h
STILL ra4 72h 61h 34h
ASPECT re2 72h 65h 32h
WALL SCREEN rd7 72h 64h 37h
CE re7 72h 65h 37h
[Example] When displaying the MENU selection bar. (Figures and symbols enclosed in quotation marks are
ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘72’ ‘35’ ‘34’ ‘0D’
00r54
Command operating the same as the
MENU button
‘30’ ‘30’ ‘72’ ‘35’ ‘34’ ‘0D’
00r54
Command receipt confirmation
(Command echo back)

6
4.4 Direct commands (Not executable in stand-by mode. Possible only to read during muting.)
The direct commands are used for the keystone setting of this projector with the value.
ITEM Function Data
Character ASCII
VOLUME VL 56h 4Ch 00–31
KEYSTONE (vertical) KS 4Bh 53h ±35
KEYSTONE (horizontal) KSH 4Bh 53h 48h ±25
How to set the value
Use the character or ASCII code as shown below to set the value.
Character + - 0 1 2 3 4 5 6 7 8 9
ASCII ‘2Bh’ ‘2Dh’ ‘30h’ ‘31h’ ‘32h’ ‘33h’ ‘34h’ ‘35h’ ‘36h’ ‘37h’ ‘38h’ ‘39h’
[Example] When setting the volume to 15. (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘56’ ‘4C’ ‘31’ ‘35’ ‘0D’
00VL15
Command for setting the volume
‘30’ ‘30’ ‘56’ ‘4C’ ‘31’ ‘35’ ‘0D’
00VL15
Command receipt confirmation
(Command echo back)
4.5 Function commands (Not executable in stand-by mode. When the mute commands are sent while the splash
screen is being displayed, the splash screen is not muted but only canceled.)
The mute commands are used for the mute setting of this projector with the 0 (30h) and 1 (31h).
ITEM Function Data
Character ASCII
MUTE MUTE 4Dh 55h 54h 45h 0 (OFF), 1 (ON)
PinP PiP 50h 69h 50h 0 (OFF), 1 (ON)
EXPAND MGNFY 4Dh 47h 4Eh 46h 59h 0 (OFF), 1 (ON)
STILL FRZ 46h 52h 5Ah 0 (OFF), 1 (ON)
Function canceling FNCOFF 46h 4Eh 43h 4Fh 46h 46h
4.6 Menu setting commands (Not executable in stand-by mode. Possible only to read during muting.)
The menu setting commands are used for the menu setting of this projector. If the personal computer sends the
command without attaching the data code, the projector attaches to the received command its current setting
value as the data code and send it back to the PC.
ITEM Function Data
Character ASCII
COLOR ENHANCER CE 43h 45h 0 (AUTO), 1 (PRESENTATION), 2 (STANDARD),
3 (THEATER), 4 (sRGB), 5 (USER)
COLOR ENHANCER-
USER-GAMMA MODE
CEU1GS 43h 45h 55h 31h 47h 53h 0 (DYNAMIC), 1 (NATURAL), 2 (DETAIL)
COLOR ENHANCER-
USER-RGB-COLOR
CEU1C 43h 45h 55h 31h 43h ±10
COLOR ENHANCER-
USER-RGB-TINT
CEU1T 43h 45h 55h 31h 54h ±10
CONTRAST PP 50h 50h ±30
BRIGHTNESS QQ 51h 51h ±30
COLOR TEMP. A 41h 1 (STANDARD), 2 (HIGH), 3 (LOW), 4 (USER)
COLOR TEMP.-USER
(CONTRAST)
P 50h ±30 ±30 ±30 (R, G, B)
COLOR TEMP.-USER
(BRIGHTNESS)
Q 51h ±30 ±30 ±30 (R, G, B)
COLOR T 54h ±10
TINT S 53h ±10
SHARPNESS R 52h ±5
NOISE REDUCTION NR 4Eh 52h 0 (OFF), 1 (ON)
CTI CTI 43h 54h 49h 0 (OFF), 1 (ON)
INPUT LEVEL IPL 49h 50h 4Ch ±5,
For DVI input: +0 (NORMAL), +1 (ENHANCED)
WALL SCREEN WS 57h 53h
0 (OFF), 1 (BEIGE), 2 (LIGHT BLUE), 3 (LIGHT
GREEN), 4 (PINK), 5 (BLACK BOARD)

7
ITEM Function Data
Character ASCII
WALL SCREEN (BEIGE) WSY 57h 53h 59h 1–5
WALL SCREEN (LIGHT BLUE) WSB 57h 53h 42h 1–5
WALL SCREEN (LIGHT GREEN) WSG 57h 53h 47h 1–5
WALL SCREEN (PINK) WSP 57h 53h 50h 1–5
LAMP MODE LM 4Ch 4Dh 0 (STANDARD), 1 (LOW)
AUTO POWER ON APON 41h 50h 4Fh 4Eh 0 (OFF), 1 (ON)
AUTO POWER OFF APOF 41h 50h 4Fh 46h 00 (OFF), 05, 10, 15, 30, 60
SPLASH SCREEN SS 53h 53h 0 (OFF), 1 (ON)
BACK COLOR BB 42h 42h 0 (BLACK), 1 (BLUE), 2 (IMAGE)
MUTE MODE MM 4Dh 4Dh 0 (BLACK), 1 (IMAGE)
IMAGE REVERSE IR 49h 52h 0 (OFF), 1 (MIRROR), 2 (INVERT),
3 (MIRROR INVERT)
ASPECT SC 53h 43h 0 (AUTO), 1 (16:9), 2 (REAL), 3 (FULL)
ASPECT (Position of 16:9
image)
SCP 53h 43h 50h 0 (CENTER), 1 (UPPER), 2 (LOWER)
PASSWORD FUNCTION
PSLOCK 50h 53h 4Ch 4Fh 43h
4Bh
0**** (UNLOCK), 1**** (DISPLAY INPUT),
2**** (MENU ACCESS), 3**** (SPLASH ID SCREEN)
**** is a 4 to 8-digit password comprised of any
figures 1 to 4.
MENU POSITION MP 4Dh 50h 0 (Upper left), 1 (Lower right)
CINEMA MODE CINE 43h 49h 4Eh 45h 0 (OFF), 1 (AUTO)
VIDEO SIGNAL
(VIDEO only)
VS 56h 53h 0 (AUTO), 1 (NTSC), 2 (PAL), 3 (SECAM),
4 (4.43NTSC), 5 (PAL-M), 6 (PAL-N), 7 (PAL-60)
SET UP STU 53h 54h 55h 0 (AUTO), 1 (OFF), 2 (3.75%), 3 (7.5%)
SCART INPUT SRT 53h 52h 54h 0 (OFF), 1 (ON)
LANGUAGE LG 4Ch 47h 0 ( ), 1 (English), 2 (Español), 3 (Deutsch),
4 (Français), 5 (Italiano), 6 ( ), 7 ( ),
8 ( ), 9 (PORTUGUÊS)
RESET ALL RSTALL 52h 53h 54h 41h 4Ch 4Ch
MEMORY CALL MMC 4Dh 4Dh 43h 0 (AUTO), 1 (MEMORY1), 2 (MEMORY2)
HORIZ.POSITION HP 48h 50h + (increment), - (decrement)*1
VERT. POSITION VP 56h 50h + (increment), - (decrement)*1
FINE SYNC. FN 46h 4Eh 00–31
TRACKING TRK 54h 52h 4Bh + (increment), - (decrement)*1
COMPUTER INPUT CIN 43h 49h 4Eh 0 (RGB), 1 (YCBCR/YPBPR), 2 (AUTO)
OVER SCAN VOS 56h 4Fh 53h 00 (90%) – 10 (100%)
HOLD HLD 48h 4Ch 44h 0 (OFF), 1 (ON)
HOLD BEGIN HLB 48h 4Ch 42h 00–99
HOLD END HLE 48h 4Ch 45h 00–99
CLAMP POSITION CLP 43h 4Ch 50h 001–255
CLAMP WIDTH CLW 43h 4Ch 57h 01–63
VERT. SYNC VSC 56h 53h 43h 0 (AUTO), 1 (OFF)
LPF LPF 4Ch 50h 46h 0 (OFF), 1 (ON)
SHUTTER(U) SHU 53h 48h 55h 00–20
SHUTTER(L) SHL 53h 48h 4Ch 00–20
SHUTTER(LS) SHLS 53h 48h 4Ch 53h 00–20
SHUTTER(RS) SHRS 53h 48h 52h 53h 00–20
*1) Setting range differs depending on the input signals.
• Some commands are not executed depending on the input signal. The operational restrictions same as those
on the menu setting are applied. Refer to “Menu operation” in the User Manual for more details.
How to set the value
Use the character or ASCII code as shown below to set the value.
Character + - 0 1 2 3 4 5 6 7 8 9
ASCII ‘2Bh’ ‘2Dh’ ‘30h’ ‘31h’ ‘32h’ ‘33h’ ‘34h’ ‘35h’ ‘36h’ ‘37h’ ‘38h’ ‘39h’

8
[Example 1] When setting the AUTO POWER ON to ON. (Figures and symbols enclosed in quotation marks are
ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘41’ ‘50’ ‘4F’ ‘4E’ ‘31’ ‘0D’
00APON1
Command for setting the AUTO
POWER ON to ON
‘30’ ‘30’ ‘41’ ‘50’ ‘4F’ ‘4E’ ‘31’ ‘0D’
00APON1
Command receipt confirmation
(Command echo back)
[Example 2] When setting the CONTRAST R of the COLOR TEMP.-USER to +10, the CONTRAST G to 0, and the
CONTRAST B to -5. (Figures and symbols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘50’ ‘2B’ ‘31’ ‘30’ ‘2B’ ‘30’ ‘30’ ‘2D’ ‘30’ ‘35’ ‘0D’
00P+10+00-05
Command for setting the
picture control
‘30’ ‘30’ ‘50’ ‘2B’ ‘31’ ‘30’ ‘2B’ ‘30’ ‘30’ ‘2D’ ‘30’ ‘35’ ‘0D’
00P+10+00-05
Command receipt confirmation
(Command echo back)
[Example 3] When checking the TINT setting (when the TINT is set to +10). (Figures and symbols enclosed in
quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘53’ ‘0D’
00S
Command for checking the
TINT setting
‘30’ ‘30’ ‘53’ ‘2B’ ‘31’ ‘30’ ‘0D’
00S+10
Check result (+10)
[Example 4] When setting the GAMMA MODE of the COLOR ENHANCER-USER to DETAIL. (Figures and sym-
bols enclosed in quotation marks are ASCII codes.):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘43’ ‘45’ ‘55’ ‘31’ ‘47’ ‘53’ ‘32’ ‘0D’
00CEU1GS2
Command for setting the
picture control
‘30’ ‘30’ ‘43’ ‘45’ ‘55’ ‘31’ ‘47’ ‘53’ ‘32’ ‘0D’
00CEU1GS2
Command receipt confirmation
(Command echo back)
4.7 Password lock commands
The password lock commands control the password lock. The password lock enabling or disabling command is
sent with a 4 to 8-digit password comprised of any figures 1 to 4 added to the end of the data code. When the
password lock is enabled or disabled successfully, the projector sends a return command comprising the data
code, password, and “1” at the end. When enabling or disabling the password lock fails, it sends a return com-
mand with “0” at the end. There is no reconfirmation of the password. The password input command is for en-
abling projection of image when password lock has been set to DISPLAY INPUT. The password input command
is sent with a 4 to 8-digit password comprised of any figures 1 to 4 at the end.
ITEM Function Data
Character ASCII
Password lock enabling/
disabling
PSLOCK 50h 53h 4Ch 4Fh 43h 4Bh 0**** (Disabling), 1**** (DISPLAY INPUT),
2**** (MENU ACCESS), 3**** (SPLASH ID SCREEN)
Password input PASS 50h 41h 53h 53h ****
**** is a 4 to 8-digit password comprised of any figures 1 to 4.
[Example] When enabling the password lock of DISPLAY INPUT (in the case that the password is 123412):
Sending commands
from the PC, etc.
Status code
from the projector Description
‘30’ ‘30’ ‘50’ ‘53’ ‘4C’ ‘4F’ ‘43’ ‘4B’ ‘31’ ‘31’ ‘32’ ‘33’ ‘34’ ‘31’ ‘32’ ‘0D’
00PSLOCK1123412
Command for enabling the
password lock of DISPLAY INPUT
‘30’ ‘30’ ‘50’ ‘53’ ‘4C’ ‘4F’ ‘43’ ‘4B’ ‘31’ ‘31’ ‘32’ ‘33’ ‘34’ ‘31’ ‘32’ ‘31’ ‘0D’
00PSLOCK11234121
Response informing that the
projector succeeded in enabling the
password lock of DISPLAY INPUT