LG Bx401c DLP Projector User Manual

							Function
31
1. Press the MENUbutton and then use ,button to select the
menu.
2. Press the  
,button to select Horizontalitem.
3. Press the  
,button to make desired adjustments.
Horizontaladjustment range is -50 ~ 50.The variable range can be different depends on input resolutions. Press the MENUbutton twice or the EXITbutton to exit the menu screen.
1. Press the MENUbutton and then use ,button to select the
menu.
2. Press the  
,button to select Verticalitem.
3. Press the  
,button to make desired adjustments.
Verticaladjustment range is -25 ~ 25.The variable range can be different depends on input resolutions. Press the MENUbutton twice or the EXITbutton to exit the menu screen.
Using Vertical Function
Using Horizontal Function
Auto Configure  
Phase          8
Clock                    0
Horizontal               0
Vertical                    0  
MENU Prev.         Move           Adjust
Auto Configure  
Phase          8
Clock                    0
Horizontal               0
Vertical                    0   
MENU Prev.         Move           Adjust 
						

							RS-232C
32
External Control Device Setup
SET ID
How to connect external control equipment
* Connect the RS-232C input jack to an external control device (such as a computer) and control the Projector’s functions externally.
1. Press the MENUbutton and then use ,button to select the         menu.
2. Press the OKbutton and then use 
,button to selectSet IDitem.
3. Press the 
,button to select your desired number.
Press the OKbutton to save the selected number.
The adjustment range ofSet IDis 1~99. Only the projector with the specified ID number will operate from the remote control. Press the MENUbutton twice or the EXITbutton to exit the menu screen.
•Connect the serial port of the PC to the RS-232C jack on the projector back panel.
•RS-232C cable is not supplied with the projector.
2
3
4
5
6
7
8
PC
RXD
TXD
DTR
GND
DSR
RTS
CTSRXD
96
1 5 TXD
DTR
GND
DSR
RTS
CTS
Projector
* 1, 9 Pin No Connection

2
3
4
5
6
7
8
•Use the RS232C cable to control the projector externally (Refer to Fig.1).
Communication Parameter Setup
• Baud Rate : 9600 bps(UART)
• Data Length : 8 bit
• Parity : none
• Stop bit : 1 bit
• Flow Control : none
• Communication code : ASCII code
Language
Aspect Ratio
Overscan
Flip horizontal
Flip vertical
Sleep time
Auto sleep
Set ID
Presentation timer
Digital ZoomEnglish
4 : 3
1
10%
Off
Off
MENU Prev.        Move            Select 
						

							RS-232C
33
Command Reference List
* Refer to the detailed information for data with [*] mark.
❑ Communication Protocol
Command1 Command2Data(Hexadecimal)01. Power   k  a 0 ~ 1
02. Aspect Ratio  k  c 1 ~ 2
03. Screen Mute  k  d 0 ~ 1
04. Contrast k  g 0 ~ 64
05. Brightness  k  h 0 ~ 64
06. Color k  i 0 ~ 64
07. Tint  k  j 0 ~ 64
08. Sharpness k  k 0 ~ 64
09. OSD Select k  l 0 ~ 1
10. Remote Control Lock / Key Lock k  m 0 ~ 1
11. Color Temperature k u 0 ~ 3
12. Red ADC gain adjustment j w 0 ~ 64
13. Green ADC gain adjustment j y 0 ~ 64
14. Blue ADC gain adjustment j  z 0 ~ 64
15. Low Power j q 0 ~ 1
16. Auto configuration j u 1
17. Input Select x  b *
18. Key m c Key code
* Real data mapping 1
* Real data mapping 2 
						

							RS-232C
34
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 format, Acknowledgement data feed back presents 
status about each function.
02. Aspect Ratio(Command:kc)
➜To adjust the screen format.
T
ransmission
Data 1 : 4:3
2 : 16:9
Data 1 : 4:3
2 : 16:9
[k] [c] [  ] [Set ID] [  ] [Data] [Cr]
[c] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
1. Transmission
*  [Command 1] :  First command to control the set.(k, j, x, ASCII code, 1 Character)
*  [Command 2] : Second command to control the set..(ASCII code, 1 Character)
*  [Set ID] :  You can adjust the set ID to choose desired projector ID number in special menu. See previous page. 
Adjustment range is 1 ~ 99. When selecting Set ID ‘0’, every connected projector set is controlled.
Refer to ‘Real data mapping 1’.
*  [DATA] : To transmit command data. Transmit 2 character when organized ASCII code.
* Transmit ‘FF’data to read status of command.
*  [Cr] : Carriage Return
ASCII code ‘0x0D’
*  [   ] :  ASCII code character correspond to “Space Bar” which is in order to classify command, set ID and Data.
[Command1][Command2][ ][Set ID][ ][Data][Cr]
* The Projector transmits ACK (acknowledgement) based on this format when receiving normal data. At this time, if the data is 
data read mode, it indicates present status data. If the data is data write mode, it returns the data of the PC computer.
[Command2] [  ] [Set ID] [  ] [OK] [Data] [x]
[Command2] [  ] [Set ID] [  ] [NG] [Data] [x]
3. Error Acknowledgement
2. OK Acknowledgement
* The Projector transmits ACK (acknowledgement) based on this format when receiving abnormal data from non-viable 
functions or communication errors.
Data : [1] : illegal code(This command is not supported.)
[2] : not support function(This function doesn’t work.)
[3] : wait and retry(Try again a few minute later.) 
						

							RS-232C
35
03. 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
06. Color (Command:ki)
➜To adjust the screen color. (Video/Component)
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 ] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
07. Tint (Command:kj)
➜To adjust the screen tint.(Video/Component 60Hz or
NTSC signal) 
T
ransmission
Data Red : 0 ~ Green : 64
* Refer to ‘Real data mapping2’.
Data Red : 0 ~ Green : 64
[k] [ j ] [  ] [Set ID] [  ] [Data] [Cr]
[ j ] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
08. Sharpness (Command:kk)
➜To adjust the screen sharpness.(Video/Component)
T
ransmission
Data Min : 0 ~ Max : 64
* Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[k] [k] [  ] [Set ID] [  ] [Data] [Cr]
[k] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
09. OSD Select(Command:kl)
➜To select OSD On/Off.
T
ransmission
Data 0  :  OSD Select Mode Off 
1  :  OSD Select Mode On
Data 0  :  OSD Select Mode Off 
1  :  OSD Select Mode On
[k] [ l ] [  ] [Set ID] [  ] [Data] [Cr]
[ l ] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
10. Remote Control Lock/Key Lock(Command:km)
➜To lock the front panel controls on the 
projector and remote control.
T
ransmission
Data 0 : Lock Off
1 : Lock On
Data 0 : Lock Off
1 : Lock On [k] [m] [  ] [Set ID] [  ] [Data] [Cr]
[m] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
* If youre not using the remote control, use this mode.
When main power is On/Off, external control lock is released.
11. Color Temperature(Command:ku)
➜ Adjust the color temperature.
T
ransmission
Data 0 : Normal     1 : Cool     2:Warm 3 : Natural
Data 0 : Normal     1 : Cool     2:Warm 3 : Natural
[k] [u] [  ] [Set ID] [  ] [Data] [Cr]
[u] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
04. Contrast (Command:kg)
➜To adjust screen contrast. 
T
ransmission
Data Min : 0 ~ Max : 64
*Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[k] [g] [  ] [Set ID] [  ] [Data] [Cr]
[g] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
05. Brightness (Command:kh)
➜To adjust screen brightness.
T
ransmission
Data Min : 0 ~ Max : 64
*Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[k] [h] [  ] [Set ID] [  ] [Data] [Cr]
[h] [  ] [Set ID] [  ] [OK] [Data] [x]Ack 
						

							Button                   Key code  Button                  Key code 
RS-232C
36
14. 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
15. 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 ID] [  ] [OK] [Data] [x]
Ack
16. Auto Configure (Command:ju)
➜To adjust picture position and minimize image shaking 
automatically. It works only in RGB mode.
T
ransmission
Data 1 : To set
Data 1 : To set
[ j ] [u] [  ] [Set ID] [  ] [Data] [Cr]
[u] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
17. Input Select (Command:xb)
➜To select input source for the Set. 
T
ransmission
Data 20 : Video 60 : RGB1
61 : RGB2 80 : HDMI
Data 20 : Video 60 : RGB1
61 : RGB2 80 : HDMI
[x] [b] [  ] [Set ID] [  ] [Data] [Cr]
[b] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
External control device setup
18. Key (Command:mc)
➜To send Key code of IR romote control. 
T
ransmission
Data Key code
Key code
[m] [c] [  ] [Set ID] [  ] [Data] [Cr]
[b] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
12. Red ADC gain Adjustment (Color R)
(Command:jw)
➜Adjust the Red gain of ADC part.(RGB)
Transmission
Data Min : 0 ~ Max : 64
*Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[ j ] [w] [  ] [Set ID] [  ] [Data] [Cr]
[w] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
13. Green ADC gain Adjustment (Color G)
(Command:jy)
➜Adjust the Green gain of ADC part.(RGB)
T
ransmission
Data Min : 0 ~ Max : 64
*Refer to ‘Real data mapping 1’.
Data Min : 0 ~ Max : 64
[ j ] [y] [  ] [Set ID] [  ] [Data] [Cr]
[y] [  ] [Set ID] [  ] [OK] [Data] [x]
Ack
POWER
SOURCE
MENU
EXIT
OK
STILL
RATIO
BLANK
TIMER
W.PEAK
KEYSTONE
GAMMA
MODE
ZOOM
LAMP MODE
SLEEP
AUTO40
41
02
03
AD
EF
43
5B
44
BC
7984
26
69
A4
6E
4D
4F
4E
5C
68
0E
92 
						

							Information
37
Supported Monitor Display
Component-*1 HDMI(DTV)-*2 Signal 
* Cable type
1- RCA to D-Sub Adapter
2- HDMI to HDMI Cable
59.94 / 60Hz480i
480p
720p
1080i
50Hz
24/25/30Hz576i
576p
720p
1080i
1080pO
O
O
O
O
O
O
O
OX
O
O
O
X
O
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 recognition of PC monitor)
* The Synchronization input form for horizontal and vertical frequen-
cies are Separate.
* According to PC, the optimum vertical frequency may not be dis-
played up to the optimum frequency of set in ‘Registration infor-
mation (Display registration information)’. (ex, The optimum verti-
cal frequency may be displayed up to 85Hz or under in the resolu-
tion of 640X480 or 800X600.)
Maintenance
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface of it. Wipe the lens surface gently with an air spray or a soft, dry lint-free cloth.
To remove dirt or stains on the lens, moisten a soft cloth with water and a neutral detergent and wipe the lens surface gently. 
Cleaning the Projector Case
To clean the projector case, first unplug the power cable. To remove dirt or dust, wipe the casing with a soft, dry, lint-free cloth. To remove stubborn dirt or stains,
moisten a soft cloth with water and a neutral detergent and then wipe the casing.
Do not use alcohol, benzene, thinners or other chemical detergents as these can cause the casing to be warped or discolored. * The projector needs little maintenance. You should keep the lens clean because any dirt or stains may appear on the screen. If any parts need to be replaced,
contact your dealer.  When cleaning any part of the projector, always turn the power off and unplug the projector first.Sources            Format               Vertical Freq.(Hz)         Horizontal Freq.(kHz) 
						

							Information
38
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.29). 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 control to turn off power.
- If the operation indicator LED is orange and blinking, do not disconnect the main supply until the operation indicator LED 
is lit up constantly (orange).
- Allow the lamp to cool for 1 hour before replacing it.
- Replace only with the same type lamp from an LG Electronics Service Center. Using another manufacturers lamp may
cause damage to the Projector and lamp.
- Pull out the lamp only when replacing the lamp.
- Keep the lamp unit out of reach of children. Keep the Lamp away from heat sources such as radiators, stoves etc.
- To reduce the risk of fire do not expose the lamp to liquids or foreign materials.
- Do not place the lamp near any heat source.
- Make sure the new lamp is securely tightened with screws. If not, the image may be dark or there  could be an increased
risk of fire.
- Never touch the lamp unit glass otherwise image quality may be compromised or lamp life maybe reduced.
To obtain a replacement Lamp unit
Lamp model number is on page 42. Check the lamp model and then purchase it from an LG Electronics Service Center.
Using another manufacturers lamp may cause damage to the projector.
Lamp unit disposal
Dispose of the used lamp by returning it to the LG Electronics Service Center.

Lamp indicators 
						

							Information
39
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 correct position.
Make sure it is inserted correctly.
7Tighten the screws you removed in step 3.
(Make sure they are fixed firmly.)
8
Close the lamp cover and install the screws from
step 2 to install the cover.
(If the lamp cover is not installed correctly the unit will not
power on.)
Replacing the Lamp
Screws
Using another manufacturers lamp may cause damage to the projector or lamp.
Make sure the lamp cover is securely fastened. If the lamp cover is not installed correctly the unit will not power on.
If this fault persists contact an LG Authorized Service Center.
Knob 
						

							Information
40
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 least in 5 minutes after activating it. 
- The frequent On/Off changes may cause the lamp function to deteriorate.
Don’t pull out the power cord while activating the projector and the cooling fan. 
- It may cause the lamp life-span to shorten and get damaged. 
The life-span of projector may considerably depend on the use environment and treatment conditions. 
The projector uses the high pressure mercury lamp so that the serious caution is essential. The shock or abuse while using
may cause lamp to blow off with explosion. 
When you continue to use the projector after an interval of lamp replacement, the lamp may be blown off with explosion.
The following treatment should be done, in case of lamp blow-off.
- Pull off the power cord immediately.
- Let some fresh air in immediately (Ventilation).
- Check the product condition at the nearer service center and replace it with new lamp, if necessary. 
- Don’t try to disassemble the product without the authorized technician.  
WARNING