3M Multimedia Projector Mp8749 Technical Manual

Pin NoSignalPin NoSignalPin NoSignal
1Video input Red9-
15
RGB IN 1:  SCL(DDC)
2Video input Green10GroundRGB IN 2:   -
3Video input Blue11-RGB OUT:   -
4-
12
RGB IN 1: SDA(DDC)
5GroundRGB IN 2:   -
6Ground RedRGB OUT:   -
7Ground Green13H. sync./ Composite sync.
8Ground Blue14Vertical sync
TECHNICAL - 1
TECHNICAL TECHNICAL
TECHNICAL
Dimension Diagram
298
94.6
54
76.5
228
76
AC N
Unit : mm
2. Mini Din 4-pin Connector (S-VIDEO)
Pin NoSignal
1Color:0.286Vp-p (NTSC, burst signal),75Ωterminator
0.3Vp-p...

TECHNICAL - 2
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
Example of computer signal
• Some computers may have multiple display screen modes. Use of some of these modes
will not be possible with this projector.
• Be sure to check jack type, signal level, timing and resolution before connecting this projector to a
computer.
• Depending on the input signal, full-size display may not be...

TECHNICAL - 3
TECHNICAL
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
Initial set signals
The following signals are used for the initial settings.
The signal timing of some computer models may be different. In such case, refer to adjust the
V.POSIT and H.POSIT of the menu.
DATA
HSYNCDATA
VSYNCDisplay interval c
Back porch b
Sync aFront porch d
Display interval c
Back porch b
Sync aFront porch...

TECHNICAL - 4
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
Connection to the Mouse Control
1. PS/2, ADB or Serial Mouse
(1) Turn off the projector and computer, and connect the two units with the appropriate cable. For
PS/2 mouse control (for IBM and compatible), use the enclosed mouse cable. For others, consult
your dealer.
(2) Disconnect the USB cable from the projector if it is connected....

TECHNICAL - 5
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
TECHNICAL
1
2
3
4
1
2
3
4
+5V
—
DATA
+DATA
GND
+5V
—
DATA
+DATA
GND
1
234
2
1
3
4
USB jack 
(B type)
USB jack 
(A type)Projector
USB cable
Computer
ADB Mouse
2
1
4
3
6
5
2
1
4
3
8
7
10
9
12
11
14
13
15
RTS
GND+5VADB
GND+5V (
POWER ON)
D ATA
21
43
Mouse jack 
Mini DIN 4-pin Projector
Computer
123
4
5
6
78
910
11 12 13
14
15
CONTROL...

TECHNICAL - 6
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
RS-232C communication
(1) Turn off the projector and computer power supplies and connect with the RS-232C cable.
(2) Turn on the computer power supply and, after the computer has started up, turn on the projector
power supply.
1 2 3
4 5
6
7 8 910
11 12 13
14 15
Control jack
D-sub 15-pin shrink jack123456789101112131415
RD
TD GND SELO...

TECHNICAL - 7
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
TECHNICAL
Requesting projector status (Get command)
(1) Send the request code Header + Command data (‘02H’+‘00H’+ type (2 bytes) +‘00H’+‘00H’)
from the computer to the projector.
(2) The projector returns the response code ‘1DH’+ data (2 bytes) to the computer.
Changing the projector settings (Set command)
(1) Send the setting code...

TECHNICAL - 8
NamesOperation typeHeaderCommand data
CRCActionTypeSetting code
Blank ColorSet
RedBE  EF0306  003B  D301  0000  3000  00
OrangeBE  EF0306  00AB  D201  0000  3001  00
GreenBE  EF0306  005B  D201  0000  3002  00
BlueBE  EF0306  00CB  D301  0000  3003  00
PurpleBE  EF0306  00FB  D101  0000  3004  00
WhiteBE  EF0306  006B  D001  0000  3005  00
BlackBE  EF0306  009B  D001  0000  3006  00
GetBE  EF0306  0008  D302  0000  3000  00
MirrorSet
NormalBE  EF0306  00C7  D201  0001  3000  00
H InverseBE...

TECHNICAL - 9
TECHNICAL
NamesOperation typeHeaderCommand data
CRCActionTypeSetting code
Magnify
GetBE  EF0306  007C  D202  0007  3000  00
IncrementBE  EF0306  001A  D204  0007  3000  00
DecrementBE  EF0306  00CB  D305  0007  3000  00
Auto off
GetBE  EF0306  0008  8602  0010  3100  00
IncrementBE  EF0306  006E  8604  0010  3100  00
DecrementBE  EF0306  00BF  8705  0010  3100  00
Brightness ResetExecuteBE  EF0306  0058  D306  0000  7000  00
Contrast ResetExecuteBE  EF0306  00A4  D206  0001  7000  00...

TECHNICAL - 10
T T T T
E E E E
C C C C
H H H H
N N N N
I I I I
C C C C
A A A A
L L L L(
( ( (
c c c c
o o o o
n n n n
t t t t
i i i i
n n n n
u u u u
e e e e
d d d d
) ) ) )
NamesOperation typeHeaderCommand data
CRCActionTypeSetting code
MuteSetNormalBE  EF0306  0046  D301  0002  2000  00
MuteBE  EF0306  00D6  D201  0002  2001  00
GetBE  EF0306  0075  D302  0002  2000  00
Brightness
GetBE  EF0306  0089  D202  0003  2000  00
IncrementBE  EF0306  00EF  D204  0003  2000  00
DecrementBE  EF0306  003E  D305...