Dukane Imagepro 8800a Liquid Crystal Projector Operating Guide

							29
Connection to the control signal terminal (continued)
The command code configuration consists of a 2-byte command and the following data.
• The first byte of a command indicates the command type with 3 bits on the MSB side and the data length
with 4 bits on the LSB side.
Projector - computer Computer - projector
‘0xH’ : Error code ‘2xH’ : inquiry code
‘1xH’ : response code ‘3xH’ : setting code
‘70H’ : frame error code ‘4xH’ : default setting code
‘x’ indicates the data length (example: x=2 means a 2-byte command).
• The second byte of a command indicates the command contents.
Command data chart
Item Data code
MOUSE 00h=disable mouse function, 01 ~ 7Fh=start mouse function
COMMUNICATE 0Xh=8N1, 1Xh=7N1
X0h=1200bps, X1h=2400bps, X2h=4800bps, X3h=9600bps, X4h=19200bps
POWER 3Eh=power off (standby status), 3Fh=power on
ZOOM 01 ~ 3Fh=Zoom +, 41 ~ 7Fh=Zoom –
FOCUS 01 ~ 3Fh=Focus +, 41 ~ 7Fh=Focus –
MIRROR 00h=Normal, 01h=H : Invert, 02h=V : Invert, 03h=H & V : Invert
INPUT 11h=VIDEO, 21h=RGB1, 22h=RGB2
SYSTEM (VIDEO) 00h   00h=Auto,   00h   01h=NTSC,  00h   04h=NTSC4. 43
00h   02h=PAL,   00h   03h=SECAM,  00h   05h=M-PAL,  00h   06h=N-PAL
VOLUME 00h (low volume) ~ 24h (high volume)
MUTE 00h=mute off,   01h=mute on
BRIGHT 00h   00h   00h (dark) ~ 00h   00h   24h (bright)
CONTRAST 00h   00h   00h (low) ~ 00h   00h   24h (strong)
COLOR 00h   00h   00h (pale) ~ 00h   00h   24h (dense)
TINT 00h   00h   00h (reddish) ~ 00h   00h   24h (greenish)
SHARPNESS 00h   00h   00h (soft) ~ 00h   00h   24h (sharp)
H.PHASE 00h   00h   00h ~ 00h   00h   24h
H.POSIT 00h   00h   00h   01h (Right) moves one step
00h   00h   00h   7Fh (Left) moves one step
H.SIZE 00h   00h   00h   01h (Large) moves two step
00h   00h   00h   7Fh (Small) moves two step
V.POSIT 00h   00h   00h   01h (Up) moves one step
00h   00h   00h   7Fh (Down) moves one step
COLOR BALANCE R00h   00h   00h (Light red) ~ 00h   00h   24h (Dark red)
COLOR BALANCE B00h   00h   00h (Light blue) ~ 00h   00h   24h (Dark blue)
AUTO ADJUST 00h (AUTO ADJUST (Play)), 07h (AUTO ADJUST (stop))
BLANK 0Xh=blanking off, 1Xh=blanking on
X=8 Black, X=9 Blue, X=F White
MAGNIFY 00h=normal display, 01h=zoom Magnify display or Magnify ratio up.
7Fh=zoom ratio down
FREEZE 00h=normal display, 01h=still image display 
						

							30
Connection to the control signal terminal (continued)
Requesting projector status
(1) Send the request code ‘20H’ + 
‘yyH’  from the computer to the projector.
(2) The projector returns the response code ‘1xH’ + ‘yyH’ +data to the computer.
Changing the projector settings
(1) Send the setting code ‘3xH’ + ‘yyH’ +data from the computer to the projector.
(2) The projector changes the setting based on the above setting code.
(3) The projector returns the response code ‘1xH’ + ‘yyH’ +data to the computer.
Using the projector default settigns
(1) The computer sends the default setting code ‘40H’ + ‘yyH’  to the projector.
(2) The projector changes the specified setting to the default value.
(3) The projector returns the default value with the response code ‘1xH’ + ‘yyH’ =data.
When a command sent by the projector cannot be understood by the computer
(1) The computer sends the command code 
‘3xH’ ,  ‘4xH’  or ‘4xH’ + ‘yyH’ +data to the projector.
(2) When the command sent by the projector cannot be understood, the error command ‘00H’ + ‘yyH’ is
returned by the computer.
When data sent by the projector cannot be understood
(1) The computer sends the command code ‘3xH’ , ‘4xH’  or ‘4xH’ + ‘yyH’ +data to the projector.
(2) When the command sent by the projector cannot be understood, the the error code ‘0xH’ +‘yyH’ +data is
returned.
When the data length is greater than indicated by the data length code, the projector will ignore the excess data code.
Conversely, when the data length is shorter than indicated by the data length code, an error code will be
returned to the projector.
When a frame error occurs
Repeats 10 times per second until there is some sort of response to the error code 70H + 70H.
When the interval between bytes in one command is 500ms or greater
When a command or data is not sent within 500ms after the command code ‘2xH’ , ‘3xH’  or ‘4xH’  is sent by
the computer, the error command ‘70H’ +‘70H’  will be returned as soon as the 500ms elapses. After this, if
there is no response within 1 sec., a frame error will occur.
The response data in (3) above need not match the setting data in (1).
For example, when the projector cannot set the setting data in (1), the projector may set the
closest value. That value will be used as the response data in (3). Or else the projector will
return the error code ‘0xH’ + ‘yyH’ +data.Caution
• Operation cannot be guaranteed when the projector receives an undefined command or data.
• Provide an interval of at least 40ms between the response code and any other code.Caution 
						

							31
RGB  IN 12
CONTROL RGB  OUTS-VIDEO  IN
VIDEO  IN
AUDIO  IN
L
MONO
R
USB AUDIO
OUT AUDIO  IN
12
Example of system setup
Cleaning the Air filter
Turn power off to all devices before connecting.
Refer to the instruction manual of each device before connecting.Caution
AC input
Video tape recorder with S jack
Video tape recorder
Speaker (with built-in amp)
Display monitor Computer
(desktop type)Computer
(notebook type)
Clean the air filter about every 100 hours .
1Turn off the MAIN POWER switch of the projector and
pull out the power cord.
2Remove the front air filter.
Filter Model
Air FilterMU00831 
						

							32
Cleaning the Air filter (continued)
3Cleaning the air filter with a vacuum cleaner
4Installing the air filter
When the air filter becomes clogged with dust, etc., the projector power may turn off to
prevent the internal heat level rising.
Do not operate the projector with the air filter removed.Caution
Lamp
Message table
The indicator lamp will also light red when the lamp unit overheats. In such case, turn off the
main power switch, wait for a while (approx. 20 min.) and then turn the power on again. If the
indicator lamp lights red again when the power is turned on, contact your dealer or service
company.Caution
The light source lamp has a service life.
When used for an extended time, the images may become darker and the colors may deteriorate.
A malfunction could occur if the projector is used in this condition, so replace the lamp with a new one.
The following indicator or a message which appears when the power is turned on will indicate when the lamp
should be replaced.
At such time, it is necessary to replace the lamp with a new one. For lamp replacement, please contact your
dealer or service company.
The following messages are displayed on the screen.
*1 This display will disappear after 3min. but will reappear when the power is turned on again.
Screen displays
CHANGE THE LAMP“CALL
A MAINTENANCE PERSON”
“CHANGE THE LAMP”
“CALL
A MAINTENANCE PERSON”
“THE POWER WILL
TURN OFF AFTER *hr.”
Blinking of
“CHANGE THE LAMP”
NO INPUT IS DETECTED
SYNC IS OUT OF RANGEThe total lamp usage time is nearing the service life of the lamp. Replace whith a new lamp.
The lamp will turn off automatically when the lamp replacement time has been exceeded.
*1
The total lamp time is nearing the lamp replacement time. After (*) hours, the lamp will turn
off. Quickly replace with a new lamp.    *1
*Indicates the number of hours until the lamp turns off automatically.
The total lamp time has exceeded the replacement time. The lamp will blink for
approximately 10 min. and then turn off automatically. Replace with a new lamp.
There is no signal input (refer to pages 22, 23).
The current horizontal or vertical frequency cannot be used by this projector (refer to pages 23, 24). 
						

							33
Message table (continued)
Indicators
The POWER indicator, LAMP indicator and TEMP indicator light or blink in the following cases.
POWER
indicator
Lights orange
Flashes green
Lights green
Flashes orange
Lights red
Lights red
Lights red
Flashes redLAMP
indicator
Turns off
Turns off
Turns off
Turns off
Lights red
Flashes red
Turns off
Flashes redTEMP
indicator
Turns off
Turns off
Turns off
Turns off
Turns off
Turns off
Flashes red
Turns offMessage
Standby status
Warming up
Operation status 
*1
Cool down
The lamp does not light. 
*2
A lamp has not been inserted
or the lamp cover is missing.
The cooling fan is not operating.
The total lamp time has
exceeded the replacement time.
Processing
Wait some time (approx. 20 min.) before
turning the power on again. If the
indicator still lights, the lamp may have
failed and. Replace with a new lamp.
Firmly insert the lamp as far as possible
and screw the lamp cover in place.
Contact your dealer.
Contact your dealer.
When the LAMP or TEMP indicator lights or flashes, turn off the MAIN POWER switch before proceeding. If the problem still persists, contact your
dealer or service company.
*1: When the cooling fan is stopped and the interior becomes overheated, the power will turn off automatically to allow cooling (the indicator will turn
off). In such cases, turn off the projector power, allow the set to cool and then turn the projector power on again. The lamp will then light. If the lamp
does not light, contact your dealer or service company.
*2: In some cases, when the air holes becomes blocked and the interior temperature rises, the lamp will be turned off for protection and the LAMP
indicator will flash red. In such cases, turn off the MAIN POWER switch, allow the set to cool (for approx. 20 min.) and then turn the power on again.
When you think something wrong
Before requesting repair, check in accordance with the following chart. If the situation cannot be corrected, then
contact your dealer.
A bright dot may be seen in the picture.  This is a phenomenon peculiar to the liquid crystal and is not a problem.
Symptom
The power is not
turned on.
No video or audio.
Video is present but
no audio.
Audio is present but
no video.
Colors are pale and
color matching is poor.
Images are dark.
Video is blurred.
The LAMP indicator
lights red.
The TEMP indicator
lights red.Possible cause
•The main power switch is not turned on.
•The power cord is disconnected.
•The input is not correctly set.
•No signal input.
•The projector is not correctly connected.
•The volume is seet to minimum.
•Mute is turned on.
•
Audio is switched to Video when P in P is on.
•The projector is not correctly connected.
•The brightness adjustment knob is rotated
fully clockwise.
•The lens cap is still on.
Color density and color matching are not
correctly adjusted.
•
Brightness and contrast are not correctly adjusted.•The lamp is nearing the end of its service life.
Focus or H PHASE is out of adjustment.
Lamp failure.
Internal overheating.Remedy
•
Turn on the main power switch.•Plug the power cord into an AC power outlet.
•Use the projector or remote control to set.
•Connect correctly.
•Connect correctly.
•
Press VOLUME + on the remote control or display
the menu screen and adjust the volume.
•Press the MUTE button.
•Displays the Volume bar and switches the Audio input.
•Connect correctly.
•Select BRIGHT with the MENU button and then
press the (       ) key.
•Remove the lens cap.
Adjust the video.
•Adjust the video.
•Replace with a new lamp.
Adjust the focus or H PHASE.
Wait approximately 20 min. and then turn the
power on again.
•
Make sure the ventilation openings are not blocked.•Clean the air filter.
•Lower the ambient temperature to 35 degrees C or less.
Page
P.13
P.9
P.8,10,
13,19
P.9,31
P.9,31
P.10,18
P.8,10
P.10
P.9,31
P.17
P.13
P.18
P.18
P.32
P.13,18
P.33
P.31,32 
						

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Specifications
Dimensional Diagram
·ALL specifications are subject to change without notice. 
Unit: inches
Product nameLiquid crystal projector
Model28A8800A
Display methodThree liquid crystal panels, three primary color system.
Liquid crystal Panel size3.3 cm (1.3 type)
panelDrive systemTFT active matrix
Number of pixels786,432 pixels (1024 horiz ontalx  768  v e rtical)
Lens Zoom lens F=1.7~2.3   f=49~64mm
Lamp190w UHB
Speaker1.2W + 1.2W (Stereo)
Power supplyAC100 ~ 120V, 3.7A / AC220 ~ 240V, 1.5A.
Power consumption320W
Operating temperature range0 ~ 35˚C
Size11 (W) ´5 (H) 14 (D)
Weight (mass)13 lbs
S VIDEO: mini DIN 4-pin jack
VIDEO signal input jacksVIDEO: RCA jack
AUDIO: RCA jack
RGB signal input/output jacksRGB signals: D-sub 15-pin shrink jack
Audio: stereo mini-jack
CONTROL signal jackD-sub 15-pin shrink jack
14
53
11
1 
						

							LEGAL INFORMATION
FIVE-YEAR LIMITED  WARRANTY 
This Dukane LCD projector is w arranted to the or iginal purchaser f or a period of 
five (5) y ears from the or iginal purchase date - in nor mal use and service -
against defects in mater ial and workmanship . DUKANE CORPORA TION
EXPRESSLY DISCLAIMS ALL O THER WARRANTIES OF MERCHANT ABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.
Dur ing the w arranty per iod, Dukane Cor poration will repair or replace (at the
man ufacturers option) an y such defective par ts (except f or the lamp , which is 
subject to whate ver w arranties the man ufacturer ma y provide) without charge to
the purchaser f or parts or labor when the product is retur ned, prepaid and insured,
with proof-of-purchase date.  This remedy is v oid if the product has been 
damaged by accident, unreasonab le use, neglect, improper ser vice or other 
causes not arising out of def ects in material or workmanship .
Dukane Cor poration disclaims all liability f or incidental or consequential damage 
of any kind, including all damages ar ising out of any interruptions in oper ation of 
the product and all damages to softw are.
No person, fir m, or representativ e is authorized to assume an y obligation or to 
make an y warranty on behalf of the Dukane Cor poration other than as stated 
abo ve .
        THIS LIMITED  WARRANTY IS  VALID FOR U .S.A AND CANAD A.
           FOR OTHER LOCATIONS, LOCAL  WARRANTIES APPL Y.
LAMP REPLA CEMENT SER VICE & REPAIR POLICY & PR OCEDURE 
For ser vice and par ts, contact the Dukane A V Service Depar tment 
at 1 (800) 676-2487 within the USA or 1 (630) 584-2300 w orldwide . 
If y ou w ould lik e to send a f acsimile (FAX), dial 1 (630) 584-5156 w orldwide .
When requesting w arranty ser vice, please ha ve the sales receipt a vailab le along 
with the model name and ser ial number .
If it becomes necessar y to return the projector , use the original packing mater ial 
and box (if retained) or pac k securely. Dukane Cor poration will not be liab le for 
any pic k-up or deliv ery charges or an y expenses incurred f or service calls or 
service supplied b y anyone other than the Dukane A V Service Depar tment. 
						

							Dukane Corporation
Audio Visual Products Division
2900 Dukane Drive
St. Charles, IL 60174-3395
E-mail: [email protected]
Phone: (630) 584-2300
Orders: (800) 676-2485
Information: (800) 676-2486
Fax: (630) 584-5156
Parts & Service: (800) 676-2487
Fax: (630) 584-0984
Audio Visual Products
Part # 401-552-0 2