LG Dx540 User Manual

RS-232C
31
Command Reference List
* Refer to the detailed information for data with [*] mark.
❑ Communication Protocol
Command1 Command2Data(Hexadecimal)01. Power   k  a 0 ~ 1
02. Input Select  k  b *
03. Aspect Ratio  k  c 1 ~ 2
04. Screen Mute  k  d 0 ~ 1
05. Contrast k  g 0 ~ 64
06. Brightness  k  h 0 ~ 64
07. Color k  i 0 ~ 64
08. Tint  k  j 0 ~ 64
09. Sharpness k  k 0 ~ 64
10. OSD Select k  l 0 ~ 1
11. Remote Control Lock / Key Lock k  m 0 ~ 1
12. Color Temperature k u 0 ~ 3
13. Red ADC gain...

RS-232C
32
External control device setup
01. Power (Command:ka)
➜To control Power On/Off of the Projector.
T
ransmission
Data 0  : Power Off
1  : Power On 
[k] [a] [  ] [Set ID] [  ] [Data] [Cr]
[k] [a] [  ] [Set ID] [  ] [FF] [Cr]
[a] [  ] [Set ID] [  ] [OK] [Data] [x]
[a] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
Ack
Data 0  : Power Off
1  : Power On 
➜To show Power On/Off status.
T
ransmission
Data 0  : Power Off
1  : Power On
* In like manner, if other functions transmit ‘0xFF’data based 
on this...

RS-232C
33
04. Screen Mute(Command:kd)
➜To select screen mute on/off.
T
ransmission
Data 0  :  Screen Mute Off (Picture On)
1  :  Screen Mute On (Picture Off)
Data 0  :  Screen Mute Off (Picture On)
1  :  Screen Mute On (Picture Off)
[k] [d] [  ] [Set ID] [  ] [Data] [Cr]
[d] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
07. Color (Command:ki)
➜To adjust the screen color.
T
ransmission
Data Min : 0 ~ Max : 64
*Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[k] [ i ] [  ] [Set ID] [  ] [Data] [Cr]
[ i ]...

RS-232C
34
15. Blue ADC gain Adjustment (Color B)
(Command:jz)
➜Adjust the Blue gain of ADC part.(RGB)
T
ransmission
Data Min : 0 ~ Max : 64
*Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[ j ] [z] [  ] [Set ID] [  ] [Data] [Cr]
[z] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
16. Low Power (Command:jq)
➜To reduce the power consumption of the projector.
T
ransmission
Data 0 : Low Power Off
1 : Low Power On
Data 0 : Low Power Off
1 : Low Power On
[ j ] [q] [  ] [Set ID] [  ] [Data] [Cr]
[q] [  ] [Set...

Information
35
Supported Monitor Display
Component-*1 RGB(DTV)-*2 HDMI(DTV)-*3 Signal 
* Cable type
1- RCA to D-Sub Adapter
2- Computer Cable
3- DVI-D Cable
NTSC(60Hz)480i
480p
720p
1080i
PAL(50Hz)576i
576p
720p
1080iO
O
O
O
O
O
O
OX
O
O
O
X
O
O
OX
O
O
O
X
O
O
O
* The following table lists the display formats supported by the projector.
* If the projector does not support the input signal, “Out of Range” message appears on the screen.
* The projector supports DDC1/2B type as Plug & Play function. (Auto...

Information
36
Replacing the Lamp
Lamp Replacement
Be careful when replacing lamp
The change interval of lamp may depend on the use environment of Projector. You
can see the used lamp time in the CHECKING LAMP TIME section of the Menu
(page.27). You must replace the lamp when:
The projected image gets darker or starts to deteriorate.The lamp indicator is red.The message “Replace the lamp” appears on the screen when turning the
projector on.
- Press the POWER button on the control panel or remote...

Information
37
1Turn off the projector and unplug the power cable.
Carefully place on a cushioned surface.
(Allow the lamp to cool for 1 hour before
removing the used lamp from the projector.)2Unscrew the screw from the lamp cover using a
screwdriver.
Lamp case screw
3
After lifting the lamp cover off, remove the two
retaining screws on the lamp case with a screw-
driver.
4Lift the lamp up from the projector.
5
Pull out the handle slowly and remove the lamp
case.6
Insert the new lamp gently into the...

Information
38
How to fix the lens cap to the projector
How to fix the lens cap
1Prepare the lens cap and the strap supplied as
accessories.2Insert the non-knot end of the strap into the hole at
the bottom of the lens section of the projector.
3
Fix the strap at the hole of the projector into the
hole of the lens cap, and then pass the lens cap
through the strap lasso.
4
They are completely assembled as shown at
the below figure. 
Regarding the projector lamp control 
Don’t turn off the projector at...

Information
39
Specifications
Operating ConditionProjector Lamp
MODEL
Resolution
Horizontal / Vertical Ratio
DLP panel size
Screen size
(Projection distance)
Projection off-set ratio
Remote control distance
Zoom ratio
Video compatibility
Power
Height(mm/inches)
Breadth(mm/inches)
Length(mm/inches)1024(Horizontal) x 768(Vertical)pixel
4:3(horizontal:vertical)DX540 (DX540-JD)
Temperature
In operation : 32~95°F(0°C~35°C)
In storage and transit : -4~140°F(-20°C~60°C)
Humidity 
In operation : 0~ 75% relative...

DX540
OWNER’S MANUAL
LG  DLP  PROJECTOR LG  DLP  PROJECTOR
Please read this manual carefully before operating
your set. 
Retain it for future reference.
Record model number and serial number of the set. 
See the label attached on the bottom of the set and
quote this information to your dealer when you
require service.
Model number :
Serial number :
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