Delta Elec. Inc. BS274 & BX274 rev.

05

DATA PROJECTOR
BS274 & BX274
SERVICE MANUAL

Rev.04

Company Confidential LGE_______________________ Delta____________

1
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

CONTENTS

1.COMPLIANCE OF SAFE REPAIR.........................................................................................4

1-1. Caution During Disassembling And Assembling............................................................4
1-2. Lamp............................................................................................................................. 4
1-3. Lens...............................................................................................................................4
2.SPECIFICATIONS.................................................................................................................5
2-1. Summary Specifications................................................................................................ 5
2-2. I/O Ports Illustration.......................................................................................................6
2-3. Top view-on screen Display (OSD) buttons and LEDS.…………………………..…….. 7
2-4. Rear view……………………………………………………..…………………..…………...9
2-5. Bottom view…………………………………………………………………………………..10
2-6. Remote Control Parts………………………………………………...………………….….11
2-7. Inserting the Remote Control Batteries……………………………………………………13
2-8. Block Diagram…...................................…...................................................................14
3.TROUBLE SHOOTING........................................................................................................15
4.DISASSEMBLY AND ASSEMBLY....................................................................................... 23
5.Flash Upgrade Flow.............................................................................................................36
5-1. Projector RS-232 Drivers Installation Guide…………………………..………………….36
5-2. DLP Projector Flash-Tool (firmware) User Guide…………………...……….…………..41
5-3. Started with Download…………………………………….……..………………………....42
5-4. Starting and Shutting down the Projector………..…………………………………….....48
5-5. Setting an Access Password (Security Lock)……..………………………….…………..50
5-6. Factroy Reset……………….……………………………………………………………..…52
5-7. Status…………………………………………………………………….…………………...53
6. Calibration…………………………………………………………………………………...…….54
7. Color Border Adjustment………………………………………………………………………...58
8. Projection Lamp…………………………………………………………………………………..59
9. Cleaning………………………………………………………………..………………..………...63
10.SERVICE NOTE................................................................................................................64
10-1.Cleaning......................................................................................................................64
10-2.Power & READY LED Blink Code Message...............................................................65
10-3.Factory Preset Display Modes....................................................................................66
10-4.Projection Distance……………………………………………………………………..…..68
Company Confidential LGE_______________________ Delta____________

2
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05
11.EDID data …......................................................................................................................69
12.RS232…………………………….……………………………………………….………………75
13.Projector Dimensions ........................................................................................................84
14.Spare part list ....................................................................................................................85

Revision Description Date

rev.00 Draft 08/12/2010
rev.01 Preliminary 10/12/2010
Page 6-16, change the LG module name BS254_BX254_BX324 to
BS274_BX274; Page23, change the description “Loose these two
rev.02 screws” to “Loose the screw”; Delete page 66 “Inserting the 11/11/2010
Remote Control Batteries”; Updated the page number and the
Version
rev.03 Page23-35, follow LG’s advice, revise the error. 12/01/2010
Page85, item17, change the LVPS Board P/N from EBT61018601 to
rev.04 04/07/2011
EBT61018602
Page86, adding the THERMOSTAT ASSY is COV31208901 and
rev.07 11/21/2011
updated the photo on the page88

Company Confidential LGE_______________________ Delta____________

3
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

1. COMPLIANCE OF SAFE REPAIR

Be sure to read this Service Manual before providing services. In the projector, full
consideration is taken to ensure safety for fire, electric shock, injury, harmful radiation, and
substance. Therefore, observe the notice described in this Service Manual so that safety is
kept when providing services. Moreover, be sure to observe the notice described in the
Instruction Manual.
Pay attention to the following items during service inspection.

1.1 Cautions during disassembling and assembling

1. This equipment contains parts under high voltage. When making repairs, etc.
Be sure to pull out the power plug beforehand to insure safety.
2. Parts may be very hot immediately after use.
Make sure the equipment has cooled off sufficiently before carrying out repairs.
3. Make sure that parts and screws and wiring, etc. are returned to their original positions.
Tube, tape and other insulation materials have been used for safety reasons.
The internal wiring has been designed to avoid direct contact with hot parts or parts under
high voltage when using clamps or other tools.
4. The parts used in this device have special safety features such as flame-resistance and
anti-voltage properties. When replacing parts, always use parts supplied from the factory.
5. After finishing operations make sure that all parts and wires have been returned to their
original position and that there has been no deterioration of the area around the location that
was worked on.
6. Be sure to use a grounding strap (wrist band) during repair and inspection.

1.2 Lamp

During current conduction, the lamp is in the high-temperature state. In this case, pay
careful attention because a high voltage is used. When replacing a lamp, replace it after
confirming that the lamp has gotten cold sufficiently.

1.3 Lens

Do not look into a lens during projection. This damages your eyes.

Company Confidential LGE_______________________ Delta____________

4
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05
2. Specifications
2-1. Summary Specifications
Model BS274 BX274

Display type TI DMD 0.55-inch SVGA TI DMD 0.55-inch XGA

Resolution SVGA 800x600 Native XGA 1024x768 Native

Projection distance 1.0 meters ~ 10 meters

Projection screen size 36 to 243 inch (can overdrive 300”)

Projection lens Manual focus / Manual zoom

Zoom ratio 1.1

Vertical keystone +/- 15 degrees

Projection methods Front, Rear, Desktop/Ceiling (Rear, Front)

Data compatibility IBM PC or compatibles (VGA, SVGA, XGA, SXGA, UXGA), Mac

SDTV/EDTV/ HDTV 480i, 576i, 480p, 576p, 720p, 1080i, 1080p

Video compatibility NTSC, PAL , SECAM

H-Sync 15, 30 – 91.4 KHz, 97.6KHz

V-Sync 43 - 87 Hz, 120Hz

Weight 4.2 lbs (tpy)

Operation temperature 5° ~ 35°C

Dimensions 262 mm (W) x 89 mm (H) x 194 mm (D)

AC Input AC Universal 100 ~ 240, Typical @ 110 VAC (100~240)/±10%

Power consumption Typical 280W (Normal mode) / Typical 230W (ECO mode)

Stand By < 1 watts

Lamp Normal Mode: 215W / Eco Mode: 180W

Audio speaker 2W mono speaker

RGB in DSUB15x1

RGB out DSUB15x1

Video Composite video (RCA X 1)

Audio IN 3.5 mm stereo mini jack x 1

PC Audio out 3.5 mm stereo mini jack

Control Terminal RS-232

Security Kensington lock

Company Confidential LGE_______________________ Delta____________

5
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

2-2. Views of Projector parts

ITEM LABEL DESCRIPTION

1. IR receiver Receiver for IR signal from remote control

2. Lens cap Covers lens to protect when not in use

3. Height-adjust button Push to release height adjuster

4. Height adjuster Adjusts level of projector

5. Lens Remove lens cap before use

6. Zoom ring Enlarges the projected image

7. Focus ring Focuses the projector image

8. Function keys See Top view-on screen Display (OSD) buttons and LEDS

9. Height adjuster Adjusts level of projector

Important:
Ventilation openings on the projector allow for good air circulation, which keeps the projector
lamp cool. Do not obstruct any of ventilation openings.

Company Confidential LG ______________________ Delta____________

6
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05
2-3. Top view-on screen Display (OSD) buttons and LEDS

ITEM LABEL DESCRIPTION

1. Menu Open and Exits the OSD buttons

ON (RED) System over temperature

2. Temp LED
OFF Normal state

3. Lamp LED Flashing (ORG) Error code

Green Power on

4. Power LED Off Power off (AC Off)

Flashing Error off

5. Source Detects the input device

6. Up Cursor / Keystone Navigates and changes settings in the OSD / Quick Menu-For Keystone

7. Down Cursor / VOLUME Navigates and changes settings in the OSD / Quick Menu-For Volume

Company Confidential LG ______________________ Delta____________

7
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

8. Right Cursor Navigates and changes settings in the OSD

9. Power Turns the projector on or off

Navigates and changes settings in the OSD / Optimizes image size, position,
10. Left Cursor / Auto
and resolution

Company Confidential LG ______________________ Delta____________

8
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

2-4. Rear view

ITEM LABEL DESCRIPTION

1. Kensington Lock Secure to permanent object with a Kensington Lock system

2. AC IN Connect the POWER CABLE

3. AUDIO-IN Connect the AUDIO CEBLE from the input device

4. AUDIO-OUT Connect the AUDIO CEBLE for audio loop through

5. RGB IN Connect the RGB CABLE from a computer or components

6. RGB OUT Connect the RGB CABLE to display

7. VIDEO IN Connect the VIDEO CEBLE from a video device

8. RS-232 IN Connect the RS-232 CABLE from a computer (Control and Service)

Company Confidential LG ______________________ Delta____________

9
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

2-5. Bottom view

ITEM LABEL DESCRIPTION

1. Lamp Cover Remove when changing the lamp

2. Height adjustor Adjuster drops down when adjuster button is pushed

3. Height adjustor button Push to release adjustor

4. Lens cap hook To fasten the lens cap cover

5. Tilt adjustor Rotate adjuster level to adjust angle position

6. Ceiling support holes Contact your dealer for information on mounting the projector on a ceiling

NOTE:
When installing, ensure that you see only UL Listed ceiling mounts.
The construction of the ceiling mount must be of a suitable shape and strength. The ceiling
mount load capacity must exceed the weight of the installed equipment (not less than 5.15KG)
over a period of 60 seconds.
Company Confidential LG ______________________ Delta____________
10
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

2-6. Remote Control Parts

Important:
1. Avoid using the projector with bright fluorescent lighting turned on. Certain high-frequency
fluorescent lights can disrupt remote control operation.

2. Be sure nothing obstructs the path between the remote control and the projector. If the path
between the remote control and the projector is obstructed, you can bounce the signal off
certain reflective surfaces such as projector screens.

3. The buttons and keys on the projector have the same functions as the corresponding
buttons on the remote control. This user’s manual describes the functions based on the remote
control.
Company Confidential LG ______________________ Delta____________
11
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

ITEM LABEL DESCRIPTION

1. Up cursor Navigates and changes settings in the OSD

2. Enter Changes settings in the OSD

3. Power Turns the projector On or Off

4. Right cursor Navigates and changes settings in the OSD

5. Volume + Increase volume

6. Volume - Decrease volume

7. Mute Mutes the built-in speaker

8. Freeze Freeze/unfreezes the on-screen picture

9. Source Detects the input device

10. Auto Auto adjustment for frequency, tracking, size, position

11. Keystone top Corrects image trapezoid (wider bottom) effect

12. Keystone bottom Corrects image-trapezoid (wider top) effect

13. Down cursor Navigates and changes settings in the OSD

14. Left cursor Navigates and changes settings in the OSD

15. Menu Opens the OSD

Remote Control Operating Range

The remote control uses infrared transmission to control the projector. It is not necessary to
point the remote directly at the projector. Provided you are not holding the remote
perpendicular to the sides or the rear of the projector, the remote will function well within a
radius of about 7 meters (23 feet) and 15 degrees above or below the projector level. If the
projector does not respond to the remote control, move a little closer.

Company Confidential LG ______________________ Delta____________

12
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05
2-7. Inserting the Remote Control Batteries

Remove the battery compartment

cover by sliding the cover in the
1. direction of the arrow. (A) Pull out the
cover. (B)

Insert the battery with the positive

2. side facing up.

Replace the cover.

3.

Caution:

1. Only use a 3V lithium battery (CR2025)

2. Dispose of used batteries according to local ordinance regulations.
3. Remove the battery when not using the projector for prolonged periods.

Company Confidential LG ______________________ Delta____________

13
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05
2-8. Block Diagram

Company Confidential LG ______________________ Delta____________

14
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

3. TROUBLE SHOOTING

By checking operations during normal usage time, it is possible to carry out judgments on
malfunction to a certain extent. Carry out the following checks before disassembling the
equipment.

Connect the power cord

< Stand-by >

Yes Power: Flashing Green
Light
Temp : OFF
Lamp :OFF

No

< Power supply error > Yes • Power Supply Unit malfunction
Power: OFF • Check the connection of Power Supply (LVPS BD CON3002 to MB P301)
Temp: OFF • Check keypad connection ( MB P800 to Keypad P8100)
Lamp: OFF • Check voltage (12v, 5v, 3.3v, 2.5v,1.8v,1.2v,…etc) on Main Board.

No

< Fan error >

Power: Flashing Green Yes
Light6 • Check the system monitor & fan
Temp: OFF • Connector (P8002，P8003) on Main Board disconnected.
Lamp: Flashing Orange
（1，
Light（ ，2， ，3）
）

Company Confidential LG ______________________ Delta____________

15
2011/11/21
 Delta Elec. Inc. BS274 & BX274 rev.05

No

< System error > Yes

• Lamp Cover A’ssy is not attached
Power: Flashing Green
• Connector (P802) on Main Board disconnected.
Light 4 or 7
or
Temp: OFF
• Thermal break sensor is open.
Lamp: OFF
• Connector (P803) on Main Board disconnected.

< DMD error >

Power: Flashing Green Yes • DMD chip error.
Light 8 • Check DMD Board PWB Ass’y .
Temp: OFF
Lamp: OFF

No
Waiting
Power On

Company Confidential LG ______________________ Delta____________

16
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Turn the
power ON

< Powering up >

Power: Flashing Green
Temp: OFF
Lamp: OFF

< Normal operation >

Power: Flashing Green
Temp: OFF
Lamp: OFF

No

Ignition sound doesn’t exist.

• Power Board Ass’y malfunction (CN1101 doesn’t output 370 V)
< Lamp error > Yes • Ballast Connector (CN2204) or LVPS unit (CON3001)
Power: OFF disconnected
Temp: OFF • Main Board (P707) disconnected
Lamp: Static ORG • Main Board or Ballast Ass’y malfunction
Ignition sound exists.
• Lamp failure (Lamp is broken, damaged, or burst)
• System Change a new Lamp

No

< Color Wheel error > • Flexible cable of Color Wheel Ass’y is disconnected (P708) or broken.
Power: Flashing Green Yes • Index Board (P8101) / Main Board (P704) is disconnected
Light9 • Index Board malfunction
Temp: OFF • Color Wheel Ass’y malfunction (doesn’t rotate).
Lamp: OFF • Main Board Ass’y malfunction (Color Wheel Ass’y doesn’t rotate).

No

Image
Display

Company Confidential LG ______________________ Delta____________

17
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Image
Display

Yes No

No • CW Sensor Board Ass’y malfunction

Projector logo
• Main Board Ass’y malfunction
screen display
• DMD Set malfunction

Yes
Confirmation with none-signal state

No

• Lamp deterioration (malfunction/usage time)

Still dark after the Yes • Power Supply Unit malfunction
lamp is on for more (No change occurs even after lamp replacement.)
than 1min • DMD Set malfunction
(No change occurs even after lamp replacement.)

Yes
“No signal” Message display

No No

No • Remote controller set malfunction, Low battery, and outside

Press “Menu” key operation rang
• Main Board Ass’y malfunction
• Connector (P704)、(P8103 of IR PWB) disconnected
• IR PWB Ass’y malfunction
Yes
Input each signal

No
Yes
• Check the pattern generator setting is wrong
• Main Board Ass’y malfunction
Image display No • DMD Set malfunction
normally • Setting on PC side(external output setting, resolution, etc.)
• Cable malfunction (disconnection and pins broken)

No
Yes
• Connector (P902) disconnected
Speaker work No • Speaker Ass’y malfunction
normally • Main Board Ass’y malfunction

Yes
Check the
projection
Screen

Company Confidential LG ______________________ Delta____________

18
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Check the
projection
Screen

Check using all black/white screens with

PC connection

Yes

• Black lines on screen (horizontal and vertical)

Are abnormalities Yes → DMD Set malfunction
noticeable on
• Missing pixels (Missing white: 1 or more, missing black: 5 or more, or
projection screen?
sequence missing pixels)
→ DMD Set malfunction
• Shadows on screen
→ Dirt on DMD/projection lens surface
• Bluish shadows on corners of screen (during white screen display)
→ Shifted optical axis of Lens Base Unit

No
Does the lamp System OK
go off during Normal operation
operation?

Yes
• Connector P8003 of Fan disconnected
• Lamp fan (Fan1) malfunction
Lamp: Flashing
Orange Light 1
< Fan error >
Power: Flashing Green Yes • Connector P8002 of Fan disconnected
•Blower fan (Fan2) malfunction
Light 6 Lamp: Flashing
Temp: OFF Orange Light 2

• Connector P8003 of Fan disconnected

• Power fan (Fan3) malfunction
Lamp: Flashing
Orange Light 3
No

• Temperature protector operated due to the increase in

<Over temperature > Yes temperature based on operating environment
Power: OFF • Temperature protector operated due to blocked suction and
Temp: ON exhaust holes or dirty fan
Lamp: OFF

No
• Lamp malfunction
• Power Supply Unit malfunction

Company Confidential LG ______________________ Delta____________

19
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Common problems and solutions

These guidelines provide tips to deal with problems you may encounter while using the
projector. If the problem remains unsolved, contact your dealer for assistance.
Often after time spent troubleshooting, the problem is traced to something as simple as a loose connection.
Check the following before proceeding to the problem-specific solutions.

• Use some other electrical device to confirm that the electrical outlet is working.
• Ensure the projector is turned on.
• Ensure all connections are securely attached.
• Ensure the attached device is turned on.
• Ensure a connected PC is not in suspending mode.
Ensure a connected notebook computer is configured for an external display. (This is usually done by pressing an
Fn-key combination on the notebook.)

Image Problems

Problem: No image appears on the screen

1. Verify the settings on your notebook or desktop PC.

2. Turn off all equipment and power up again in the correct order.

Problem: The image is blurred

1. Adjust the Focus on the projector.

2. Press the Auto button on the remote control or projector.

3. Ensure the projector-to-screen distance is within the 10-meter (33-feet) specified range.

4. Check that the projector lens is clean.

Problem: The image is wider at the top or bottom (trapezoid effect)

5. Position the projector so it is as perpendicular to the screen as possible.

6. Use the Keystone button on the remote control or projector to correct the problem.

Problem: The image is reversed

Check the Projection setting on the Installation I menu of the OSD.

Company Confidential LG ______________________ Delta____________

20
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Problem: The image is streaked

7. Set the Frequency and Tracking settings on the Computer menu of the OSD to the default
settings.

8. To ensure the problem is not caused by a connected PC’s video card, connect to another
computer.

Problem: The image is flat with no contrast

Adjust the Contrast setting on the Image menu of the OSD.

Problem: The color of the projected image does not match the source image.

Adjust the Color Temperature and Gamma settings on the Image menu of the OSD.

Lamp Problems

Problem: There is no light from the projector

9. Check that the power cable is securely connected.

10. Ensure the power source is good by testing with another electrical device.

11. Restart the projector in the correct order and check that the Power LED is green.

12. If you have replaced the lamp recently, try resetting the lamp connections.

13. Replace the lamp module.

14. Put the old lamp back in the projector and have the projector serviced.

Problem: The lamp goes off

15. Power surges can cause the lamp to turn off. Re-plug power cord. When the Ready LED is
on, press the power button.

16. Replace the lamp module.

17. Put the old lamp back in the projector and have the projector serviced.

Company Confidential LG ______________________ Delta____________

21
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Remote Control Problems

Problem: The projector does not respond to the remote control

18. Direct the remote control towards remote sensor on the projector.

19. Ensure the path between remote and sensor is not obstructed.

20. Turn off any fluorescent lights in the room.

21. Check the battery polarity.

22. Replace the batteries.

23. Turn off other Infrared-enabled devices in the vicinity.

24. Have the remote control serviced.

Audio Problems

Problem: There is no sound

25. Adjust the volume on the remote control.

26. Adjust the volume of the audio source.

27. Check the audio cable connection.

28. Test the source audio output with other speakers.

29. Have the projector serviced.

Problem: The sound is distorted

30. Check the audio cable connection.

31. Test the source audio output with other speakers.

Company Confidential LG ______________________ Delta____________

22
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

4. DIS-ASSEMBLY AND ASSEMBLY

Removing the Lamp Cover and Lamp Module

S
Look the full set projector. Look at the IO side.

M
Look at the keypad of top side. Look at the keypad of top side.

Loose the screw. Review the lamp cover.

Company Confidential LG ______________________ Delta____________
23
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Lamp Cover and Lamp Module

I
Loose these three screws and note Take out the lamp module like this.
S
this connector

M
Remove the lamp modules (upward view). Look the Lamp #1.
B

Look the Lamp #2. Look the Lamp #3.

Company Confidential LG ______________________ Delta____________
24
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Top Cover

I
Look at the bottom side Remove the six screws.
S

M
Look the screws (S01). Remove the screw.

Review the screw (S02). When assembly the top cover note these
connectors.
Company Confidential LG ______________________ Delta____________
25
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Main Board Shield and Front Cover

I
Review the Top Cover Assy. Review the projector.
S

A
S01

S
S03

S
S04

M
Remove these screws. Review the screws (S01) (S03) (S04) .

Review the shield. When assembly the front cover note the
two connectors.
Company Confidential LG ______________________ Delta____________
26
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Main Board

S
Remove the four screws. Review the four screws. (S03)

M
Remove the six screws. Review the six screws. (S05)

Careful these connectors when you

assembly the M/B.

Company Confidential LG ______________________ Delta____________

27
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Main Board Review

Y
Main Board Review #Top side

Company Confidential LG ______________________ Delta____________

28
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Main Board Review

E
Main Board Review #Bottom side
M
P803 Therm P804 Ballast
P902 SPK P708 MOTOR
B

P8003 Fan3
L P704 Index/IR

P700 DMD P800 Keypad

P8002 Fan2

Company Confidential LG ______________________ Delta____________

29
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Optical Engine

I
Review the projector. Remove the three screws and careful this
shield when assembly.
S

SS

B
Review the screws (S01). Be careful these when assembly it.

Review the optical module #1. Review the optical module #2.
Company Confidential LG ______________________ Delta____________
30
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Optical Engine FAN and I/O Panel

I
Review the Projector. Remove the two screws (S01) and take
S
out the Engine FAN.

M
Review the Optical Engine FAN. Remove the three screws and careful
B
when the wire when you assembly.

Review the three screws (S06). Review the I/O panel.

Company Confidential LG ______________________ Delta____________
31
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Power & LVPS Board

I
Remove the three screws. Review the three screws (S01).
S

M Review the Power board. Remove the two screws and notice the screwdriver’s
position when you remove the screw (S01).
B

Review the two screws (S06) & (S01). Review the LVPS Board.

Company Confidential LG ______________________ Delta____________

32
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the Lamp shield/Lamp Fan/Therm/Switch

I
Remove the three screws (S01). Review the projector.
S

M
Remove the two screws (S01). Review the two LAMP FANS.

Remove the two serews (S01).

Company Confidential LG ______________________ Delta____________

33
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Removing the ADJ ASSY / Review Bottom case

S
Remove the screw (S01). Review the ADJ FOOT.
A

Review the Bottom Case.

Company Confidential LG ______________________ Delta____________

34
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

ITEM DESCRIPTION P/N Kg

S01 SCREW T φ3*1.06*8 PAN C S18C NI 3106160400 3-7
S02 SCREW M M2*0.4*4 FF C S18C ZN BLK 3105147300 2-3
S03 SCREW M M2*0.4*5 FF C S+P S20C NI 3105270500 2-3
S04 SCREW M M2*0.4*3.5 PAN C S20C NI 3105132600 2-3
S05 STAND OFF S18C HEX 4.7*4 F #4-40 M #4-40 3461431703 3-4
S06 SCREW M M3*0.5*6 FIL C EXT S20C ZN 3105469900 5-6

Company Confidential LG ______________________ Delta____________

35
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

5. Flash Upgrade Flow

5-1. Projector RS-232 Drivers Installation Guide

The document is to describe a Windows application software “DLP Composer Lite” for
projector firmware.

Its main purpose is to provide a detailed procedure of upgrading the application software of a
DLP projector.

The system requirement and the installation procedure of “DLP Composer Lite v10.0” are
also included in the document.

Note:
1.User must have administrative privileges on the target computer in order to
install the driver.
2.The installation target directory must not be write-protected.
User also required having the basic knowledge of Windows application installation.

Attention: This utility is for DLPTM DDP2000/2230/243x serial projectors.

System Requirement

1.IBM compatible PC (Desk Top).

2.Windows XP-SP2 operating system.

Company Confidential LG ______________________ Delta____________

36
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Install “DLP Composer Lite” to PC

Run the “DLP Composer Lite v10.0 Setup.exe”.

The following pictures are illustrating the process of the Driver installation.

Start-up page:

Click on the “Next” button to continue.

or
Click on the “Cancel” button to cancel the installation.

Company Confidential LG ______________________ Delta____________

37
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Click on the “I accept agree to be bound by all the terms and conditions of this License
Agreement” point to continue.

Click on the “Next” button to continue.

Click on the “Next” button to continue.

The default installation direction is C:\Program Files\DLP Composer 10.0

Company Confidential LG ______________________ Delta____________

38
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Click on the “Browse” button to change the default directory for saving the drive file
somewhere else.
or
Click on the “Back” button to return to the previous page.
or
Click on the “Cancel” button to cancel the installation.
or
Click on the “Next” button to continue.

Click on the “Back” button to return to the previous page.

or
Click on the “Next” button to continue or
Click on the “Cancel” button to cancel the installation.
Company Confidential LG ______________________ Delta____________
39
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Please wait for the installation to complete.

Installation Completed:

Click on the “Finish” button with the Installation Completed.

Replicate the program file “FlashDeviceParameters.txt” to PC under path:

“C:\Program Files\DLP Composer Lite 10.0\”

Company Confidential LG ______________________ Delta____________

40
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
5-2.

DLP Projector Composer Lite (firmware) User Guide

The document is to describe a Windows application software “DLP Composer Lite” for
projector firmware.

Its main purpose is to provide a detailed procedure of upgrading the application software of a
DLP projector.

The system requirement and the installation procedure of “DLP Composer Lite v10.0” are
also included in the document.

Note:
1.User must have administrative privileges on the target computer in order to
install the driver.
2.The installation target directory must not be write-protected.
User also required having the basic knowledge of Windows application installation.

Attention: This utility is for DLPTM DDP2000/2230/243x serial series projectors.

System Requirement

1.IBM compatible PC (Desk Top).

2.Windows XP-SP2 operating system.

Company Confidential LG ______________________ Delta____________

41
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
5-3.
Started with Download
The section is to illustrate the procedure to upgrade the application software of a DLP
projector.

Step 1: Launch the “DLP Composer Lite v10.0” from installed shortcut at
Program > DLP Composer(TM) Lite 10.0 > DLP Composer(TM) Lite 10.0.exe

Step 2: While executed, The window shall appear as the following picture.

Click on the “Edit” button to continue to the “DLP Composer Preferences” page.
Company Confidential LG ______________________ Delta____________
42
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Step 3:

Turn on the projector, press the” MENU “ button on the keypad or IR controller.
Then select “Installation II”, then press “ Down ” button and select “ Advance ” item.

Press “Down” button on the keypad to select “Low Power Mode” item,
Press the “Enter “button to set function to “Off”.

Step 4: Turn off the projector.

Step 5: Make sure that the RS-232 cable is firmly connected between projector and
computer.

Step 6: Using the remote control and press <Down>, <Up>, <Right>, <Up> keys in
sequence using buttons.
The “Power LED” shall blink twice and the download mode will be enabled.

Company Confidential LG ______________________ Delta____________

43
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Step 7:

Click on the “Communications” button to continue to the “Communications” page.

Choose the “Serial Port” item of Projector Interface.
Select “COM1: (In-use)” item.
Click on the “Configure” button to continue to the “Serial Port Configuration” page.

Step 8:

Company Confidential LG ______________________ Delta____________

44
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Set Baud Rate = “115200”

Set CTS = “Disable”
Click on the “OK” button to continue.

Step 8:

Choose the “Flash Loader” item of DLP Composer Lite.

On the Flash Image File:

Press “Browse” button to locate the new firmware which can be downloaded from PC.
(For example file name: DP2404_LG_DVT03_20091119.img).
Select the desired *.img file by either double clicking the file, or pressing the “Open” button.

Company Confidential LG ______________________ Delta____________

45
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Step 9:

Press the “Start” button to update the flash with the chosen firmware.
Step 10:

A warning message box will appear for confirmation. Press <Y> to continue.
Company Confidential LG ______________________ Delta____________
46
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Step 11:

When the last warning message box appears, this is the last chance to cancel the update.
Press “Confirm” button to start the firmware update.

Company Confidential LG ______________________ Delta____________

47
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
5-4. Starting and shutting down the Projector

1. Connect the power cord to the

projector. Connect the other end to a
wall outlet.
The POWER LED on the
projector lights.

2. Turn on the connected devices.

3. Then press the POWER button

to turn on the projector.

The projector splash screen displays

and connected devices are detected.

See Setting an Access Password

(Security Lock) if security lock is
enabled.

Company Confidential LG ______________________ Delta____________

48
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

4. If more than one input device is

connected, press the SOURCE
button and use ▲▼ to scroll among
devices.
(Component is supported through
the RGB to COMPONENT
ADAPTER.)

• RGB: Analog RGB

Component: DVD input YCbCr / YPbPr,

or HDTV input YPbPr via HD15 connector

• Composite Video: Traditional composite video

5. When the “Power Off? /Press Power

again” message appears, press the
POWER button. The projector turns
off.

Caution:

1. Be sure to remove the lens cap before starting projector.

2. Do not unplug the power cord until the POWER LED stops flashing–indicating the projector
has cooled down.

Company Confidential LG ______________________ Delta____________

49
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
5-5.

Setting an Access Password (Security Lock)

You can use the four (arrow) buttons to set a password and prevent unauthorized use of the
projector. When enabled, the password must be entered after you power on the projector.

IMPORTANT:
Keep the password in a safe place. Without the password, you will not be able to use the
projector. If you lose the password, contact your reseller for information on clearing the
password.

1. Press the MENU button to open the

OSD menu.

2. Press the cursor ◄► button to move

to the Installation I menu.

Company Confidential LG ______________________ Delta____________

50
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

3. Press the cursor ▲▼ button to select

Advanced.

Press (Enter) / ►
4.

Press the cursor ▲▼ button to select

5. Security Lock.

Press the ◄► button to enable or

disable security lock function.

You can use the cursor buttons

6. ▲▼◄►
either on keypad or IR remote control
for password entry. You can use any
combination including the same arrow
five times, but not less than five.

Press the cursor buttons in any order

to set the password. Select Menu to
exit the dialog box.

The password confirm menu appears

7. when user press the power-on key in
case the Security Lock is enabled.
Enter the password in the order you
set it at step 5.

Forget the password recovery (only used in the service center not to be in the end-user side)
8. Still pressed “MENU” key and plug the AC power cord when Power LED going to flashing=>
Phase a short time =>flash three times.

Company Confidential LG ______________________ Delta____________

51
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
5-6.
Factory Reset

Press the cursor ▲▼ button to move up and down in the Installation II menu. Select the
Factory Reset sub menu and press (Enter) / ► to reset all the menu items to the factory
default values.

Company Confidential LG ______________________ Delta____________

52
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
5-7. Status

Press the cursor ▲▼ button to move up and down in the Installation II menu. Select the
Installation II sub menu and press (Enter) / ► to enter the Status sub menu.

ITEM DESCRIPTION

Active
Display the activated source.
Source
Video Displays resolution/video information for RGB source and color standard for
Information Video source.
Lamp hour used information is displayed. ECO and Normal counter are
Lamp Hours
separated.

Company Confidential LG ______________________ Delta____________

53
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
6. Calibration

Step of into Service Mode

Step 1 : Turn on the projector, press the” MENU “ button on the keypad or IR controller,
Then select “Installation II”, then press “ Down ” botton and select “ Advance ”

Step 2： Press “Right” button on the keypad or “ Enter “button by remote controller, then select
“Lamp Hour Reset” , press “Right” button or “ Enter “button

Step 3: Press “ Enter “ button twice by remote control, then press “ (UP) (DOWN) (LEFT)
(RIGHT)” by remote control.

Company Confidential LG ______________________ Delta____________

54
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
6-1. ADC Adjust Procedure -- (Optional)
A. Function Description：
ADC Calibration – VGA ：Calibrating Analog RGB signal
ADC Calibration – YUV ：Calibrating YUV signal
Calibration Status ：Status of VGA and YUV calibrated value
B. Calibrate Analog RGB (1024 x 768 @ 60Hz XGA, WXGA), (800 x 600 @ 60Hz SVGA):
Step 1： In Service Mode select ADC Calibration - VGA In this menu input pattern with
White(240,240,240) and Black(16,16,16) for calibrate VGA Source . After input ready press
“Enter” or “Right” key to calibration。

Input Pattern

Step 2 : After complete the OSD will show the picture as follow , if not complete, just close the OSD。

Note : Offset & Gain Value

Default After ADC
Offset 511
Gain 511
Step 3 : Compare internal white pattern and RGB source white pattern, if the brightness gap ratio of these two
source is bigger than 3.5%.
Company Confidential LG ______________________ Delta____________
55
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
6-2. Calibrate Analog YUV
Equipment: VG828, must be take off H/V sync terminal from machine.
Step 1： In Service Mode select ADC Calibration - YUV. In this menu input pattern with 75﹪SMPTE
pattern for calibrate YUV Source and notice that the input source must be 480i format 。
After input ready press “Enter” or “Right” key to proceed。

Input Pattern

Step 2 : After complete the OSD will show the picture as follow, if not complete, just close the OSD。

NOTE: You can select Calibration Status – VGA or Calibration Status – YUV item to watch the calibrated
value at any time。

Company Confidential LG ______________________ Delta____________

56
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
6-3. Color Wheel Index

A. Input Source select to VGA1 then switch Timing as below.

”1024x768 @ 60HZ(XGA)” , ”800x600 @ 60HZ(SVGA)”

B. In service mode

C. Select “CW INDEX Delay Time”.

The default value is 710. The range is 0~719.

D. Switch Pattern 49 “256 Gray Scale” . Fine-tune until the gray scale still distinct. Decrease the
color to the minimum, tune off G, B channel, check the smooth in brighter level of the R 256
ramp. If not, fine tune “CW INDEX Delay Time” until R 256 ramp smooth.

Company Confidential LG ______________________ Delta____________

57
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
7. Color Border Adjustment

Step 1 : Adjust integration rod screw to eliminate color edge @ White pattern

1. Adjust the hexagonal screw in order to up and down

side color border disappeared. (Enable just disappearing
of down side color border on the full white pattern)
Screw 1

2. Adjust the hexagonal screw in order to right and lift side color
border disappeared. By the color border is margin value on the
down side of full white pattern. (Enable just disappearing of right
side color border on the full white pattern)

Screw 2

Step 2: Adjust lamp module angle to set the maximum brightness measured by CL200

=> Adjusted screw.

=> Fixed screw.

Loosed the fixed screw, CL200 is putted on the left corner of

the screen（When full set is putted upside down）, to adjust the
adjusted screw gets the highest luminance value then fixed
the screw in the moment.

Company Confidential LG ______________________ Delta____________

58
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
8. Projection Lamp

8-1.Replacing the Projection Lamp

The projection lamp should be replaced when it burns out. It should only be replaced with a
certified replacement part, which you can order from your local dealer.

1. The projection lamp used in this product contains a small amount of mercury.
2. Do not dispose this product with general household waste.
3. Disposal of this product must be carried out in accordance with the regulations of your local
authority.

Warning:
Be sure to turn off and unplug the projector at least 30 minutes before replacing the lamp.
Failure to do so could result in a severe burn.

1. Loosen the captive

screw on the lamp
compartment cover.

2. Remove the lamp

compartment cover.

Company Confidential LG ______________________ Delta____________

59
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

3 Remove the three screws

from the lamp module.

4 Lift the module handle up.

Disconnect the lamp

5 connector

Pull firmly on the module

handle to remove the lamp
module.

Company Confidential LG ______________________ Delta____________

60
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Reverse steps 1 to 5 to
6 install the new lamp module.
While installing, align the
lamp module with the
connector and ensure it is
level to avoid damage.

Note: The lamp module

must sit securely in place
and the lamp connector
must be connected properly
before tightening the
screws.

Company Confidential LG ______________________ Delta____________

61
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

8-2. Resetting the Lamp

After replacing the lamp, you should reset the lamp hour counter to zero. Refer to the following:

1. Press the MENU button to open

the OSD menu.

2. Press the cursor ◄► button to

move to the Installation II menu.

Press the cursor button to move

down to Advanced.

3. Press the cursor ▲▼ button to

move down to Lamp Hour Reset.

4. Press the cursor ►or enter button.

A message screen appears.

5. Press ▼ ▲ ◄ ► buttons to reset

the lamp hour.

Press the menu button to get back

6. to the Installation II.

Company Confidential LG ______________________ Delta____________

62
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
9. Cleaning

9-1. Cleaning the Projector

Cleaning the projector to remove dust and grime will help ensure trouble-free operation.
1. Be sure to turn off and unplug the projector at least 30 minutes before cleaning.
Failure to do so could result in a severe burn.
2. Use only a dampened cloth when cleaning.
Do not allow water to enter the ventilation openings on the projector.
3. If a little water gets into the projector interior while cleaning,
leave unplugged in a well-ventilated room for several hours before using.
4. If a lot of water gets into the projector interior when cleaning, have the projector serviced.

9-2. Cleaning the Lens

You can purchase optic lens cleaner from most camera stores. Refer to the following to clean
the projector lens.
1. Apply a little optic lens cleaner to a clean soft cloth.
(Do not apply the cleaner directly to the lens.)
2. Lightly wipe the lens in a circular motion.
Caution:
1. Do not use abrasive cleaners or solvents.
2. To prevent discoloration or fading, avoid getting cleaner on the projector case

9-3. Cleaning the Case

Refer to the following to clean the projector case.

1. Wipe off dust with a clean dampened cloth.
2. Moisten the cloth with warm water and mild detergent (such as used to wash dishes),
and then wipe the case.
3. Rinse all detergent from the cloth and wipe the projector again
Caution:
To prevent discoloration or fading of the case, do not use abrasive alcohol-based cleaners.

Company Confidential LG ______________________ Delta____________

63
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

10. SERVICE NOTE

10-1. Cleaning

Carry out cleaning of the main unit and interior when replacing
the lamp or making inspections.
The glass cleaner used with the following parts is as follows.

1)Cleaning the Projection Lens

*When dust and fingerprints, etc. are on the lens surface, use
the designated glass cleaner to remove as shown in the figure
at the right. For fingerprints and other soiling that are difficult
to remove with a dry cloth, use a designated glass cleaner
which has been moistened in water and then use a dry cloth
to dry it off.
*The projection lens surface has a special coating. Do not use
detergents or solvents on the surface.

2) Cleaning the Color Wheel Assy

*The color filter is made of thin glass. Be very careful when
handing the filter.
*In case of fingerprints, etc. on the surface, clean in the same
way as the projection lens unit as described in item 1). Do not
use detergents as this could cause peeling of the color filter.

3) Cleaning the DMD

*The DMD surface is glass and can be cleaned. However, avoid
scratches as these can have a direct influence on the image.
*In case of dust on the DMD surface use an air cleaner ( with a
device to prevent static, if possible) to clean off the surface.
*In case of fingerprints, etc., add a small amount of water to the
designated glass cleaner and wipe off in one direction. Then
use the designated dry glass cleaner to wipe off in the same
direction.
*Do not use absolute alcohol or other substances that could
leave streaks after drying.

4) Cleaning the Reflecting Mirror

*Be careful not to touch the reflecting mirror. The surface is
composed of vapor deposition silver and touching it directly
with the hands can lead to burnishing.
*Do not clean other than with air.

5) Cleaning the Main Unit

*Clean with a soft fuzz-free cloth. In case of severe soiling, use
a well-wrung cloth dipped in a neutral agent to remove soiling
and then finish with a dry cloth.
*Do not clean with thinner, benzene or similar agents as this
could lead to deterioration or peeling of paint.
*In case of dust in suction or exhaust holes or the interior,
disassemble the main unit and use air to remove the dust from
the inside.

Company Confidential LG ______________________ Delta____________

64
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

10-2. Power & READY LED Blink Code Message

LED Error Messages

POWER LED TEMP LED LAMP LED BLINK

ERROR CODE MESSAGES
BLINK (GREEN) (RED) (ORANGE)

Over temperature OFF ON OFF

Thermal break status error 4 OFF OFF

Lamp error 5 OFF OFF

Fan1 error 6 OFF 1

Fan2 error 6 OFF 2

Fan3 error 6 OFF 3

Lamp door open 7 OFF OFF

DMD error 8 OFF OFF

Color wheel error 9 OFF OFF

In the event of an error, please disconnect the AC power cord and wait for one (1) minute
before restarting the projector. If the POWER or LAMP LED are still blinking or the over temp
LED is lit, contact your service center.

Company Confidential LG ______________________ Delta____________

65
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
10-3. Factory Preset Display Modes

The projector can display several resolutions. The following table outlines the resolutions that
can be displayed by the projector.

H-Sync V-Sync Composite

Signal Resolution Component RGB
(KHz) (Hz) / S-Video

NTSC － 15.734 60.0 ○ － －

PAL/SECAM － 15.625 50.0 ○ － －

VESA 720 x 400* 37.9 85.0 － － ○

640 x 480 31.5 60.0 － － ○

640 x 480 37.9 72.8 － － ○

640 x 480 37.5 75.0 － － ○

640 x 480 43.3 85.0 － － ○

800 x 600 35.2 56.3 － － ○

800 x 600 37.9 60.3 － － ○

800 x 600 48.1 72.2 － － ○

800 x 600 46.9 75.0 － － ○

800 x 600 53.7 85.1 － － ○

1024 x 768 48.4 60.0 － － ○

1024 x 768 56.5 70.1 － － ○

1024 x 768 60.0 75.0 － － ○

1024 x 768 68.7 85.0 － － ○

1280 x 800 49.7 59.8 － － ○

1280 x 800 62.8 74.9 － － ○

1280 x 800 71.6 84.8 － － ○

Company Confidential LG ______________________ Delta____________

66
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
H-Sync V-Sync Composite
Signal Resolution Component RGB
(KHz) (Hz) / S-Video

1440 x 900 55.9 60.0 － － ○

1280 x 1024 64.0 60.0 － － ○

1280 x 1024 80.0 75.0 － － ○

1280 x 1024 91.1 85.0 － － ○

1400 x 1050 65.3 60.0 － － ○

1600 x 1200 75.0 60.0 － － ○

640 x 480 35.0 66.7 － － ○

832 x 624 49.7 74.5 － － ○

Apple Macintosh
1024 x 768 60.2 74.9 － － ○

1152 x 870 68.7 75.1 － － ○

480i 15.734 60 － ○ －
SDTV
576i 15.625 50 － ○ －

480p 31.5 60 － ○ －
EDTV
576p 31.3 50 － ○ －

720p 37.5 50 － ○ －

720p 45.0 60 － ○ －

1080i 33.8 60 － ○ －
HDTV
1080i 28.1 50 － ○ －

1080p 67.5 60 － ○ －

1080p 56.3 50 － ○ －

○: Supported frequency
－ : Frequency not supported
*: Displayable level

* The resolution of the panel for the BS274 is 800 x 600 and 1024 x 768 is for the BX274.
Resolution other than native resolution may display with uneven size of text or lines.
* HDTV timing: DVD player (main source), VG828 (secondary source).

Company Confidential LG ______________________ Delta____________

67
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
10-4. Projection Distance

ITEM TELE WIDE

Distance (m) 1.32 3.58 4.39 8.78 1.57 3.14 3.93 11.77

Diagonal (inches) 30 80 100 200 40 80 100 300

Keystone (degree) 12.5 12.5 12.5 12.5 13.9 13.9 13.9 13.9

Image Height (mm) 457 1219 1524 3048 610 1219 1524 4527

Image Width (mm) 610 1626 2032 4064 813 1626 2032 6096

A (mm) 64 171 213 427 85 171 213 640

Company Confidential LG ______________________ Delta____________

68
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
11. EDID Data
A. BS274 (DP-2411)

(08-09) ID Manufacturer Name ________________ = GSM

(11-10) Product ID Code _____________________ = 0101(Hex), 257(Dec)
(12-15) Last 5 Digits of Serial Number ______ = 16843009(Dec), 01010101(Hex)
(16) Week of Manufacture _________________ = 1
(17) Year of Manufacture _________________ = 2010
(18) EDID Version Number _________________ = 1
(19) EDID Revision Number ________________ = 3
(20) VIDEO INPUT DEFINITION :
Analog Signal
0.700V/0.300V
Separate
Composite
Sync on Green
(21) Maximum Horizontal Image Size _______ = 0 mm
(22) Maximum Vertical Image Size _________ = 0 mm
(23) Display Gamma _______________________ = 2.20
(24) DPMS and Supported Feature(s) :
Preferred Timing Mode
Active Off
RGB Color Display
(25-34) CHROMA INFO :
RedX : 0.635
Company Confidential LG ______________________ Delta____________
69
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
RedY : 0.350
GreenX : 0.343
GreenY : 0.587
BlueX : 0.146
BlueY : 0.074
WhiteX : 0.306
WhiteY : 0.333
(35) ESTABLISHED TIMING I :
720 X 400 @ 70Hz (IBM,VGA)
640 X 480 @ 60Hz (IBM,VGA)
640 X 480 @ 67Hz (Apple,Mac II)
640 X 480 @ 72Hz (VESA)
640 X 480 @ 75Hz (VESA)
800 X 600 @ 56Hz (VESA)
800 X 600 @ 60Hz (VESA)
(36) ESTABLISHED TIMING II :
800 X 600 @ 72Hz (VESA)
800 X 600 @ 75Hz (VESA)
832 X 624 @ 75Hz (Apple, Mac II)
1024 X 768 @ 60Hz (VESA)
1024 X 768 @ 70Hz (VESA)
1024 X 768 @ 75Hz (VESA)
1280 X 1024 @ 75Hz (VESA)
(37) Manufacturer's Reserved Timing :
1152 X 870 @ 75Hz (Apple, Mac II)
(38-53) Standard Timing Identification :
800 X 600 @ 85Hz
1024 X 768 @ 85Hz
1024 X 768 @ 120Hz
1280 X 800 @ 60Hz
1280 X 1024 @ 60Hz
1280 X 960 @ 60Hz
1400 X 1050 @ 60Hz
1440 X 900 @ 60Hz
( 54- 71) Detailed Timing / Descriptor Block 1 :
800 X 600 : Pixel Clock : 73 MHz
Company Confidential LG ______________________ Delta____________
70
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Horizontal Image Size : 0 mm Vertical Image Size : 0 mm
Refreshed Mode : Non-Interlaced
Horizontal :
Active Time : 800 pixels Blanking Time : 160 pixels
Sync Offset : 48 pixels Sync Pulse Width : 32 pixels
Border : 0 pixels
Vertical :
Active Time : 600 lines Blanking Time : 36 lines
Sync Offset : 3 lines Sync Pulse Width : 4 lines
Border : 0 lines
None(Normal)
Digital Separate, Horizontal Polarity (-) Vertical Polarity (-)
( 72- 89) Detailed Timing / Descriptor Block 2 :
1280 X 720 : Pixel Clock : 130 MHz
Horizontal Image Size : 0 mm Vertical Image Size : 0 mm
Refreshed Mode : Non-Interlaced
Horizontal :
Active Time : 1280 pixels Blanking Time : 160 pixels
Sync Offset : 48 pixels Sync Pulse Width : 32 pixels
Border : 0 pixels
Vertical :
Active Time : 720 lines Blanking Time : 30 lines
Sync Offset : 5 lines Sync Pulse Width : 5 lines
Border : 0 lines
None(Normal)
Digital Separate, Horizontal Polarity (-) Vertical Polarity (-)
( 90-107) Detailed Timing / Descriptor Block 3 :
Monitor Range Limits :
Horizontal Freq. : 15-100 kHz
Vertical Freq. : 47-120 Hz
Pixel Clock : 170 MHz
(108-125) Detailed Timing / Descriptor Block 4 :
Monitor Name :
BS274
(126) No Extension EDID Block(s)
(127) CheckSum is OK
Company Confidential LG ______________________ Delta____________
71
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
B. BX274 (DP-3411)

(08-09) ID Manufacturer Name ________________ = GSM

(11-10) Product ID Code _____________________ = 0101(Hex), 257(Dec)
(12-15) Last 5 Digits of Serial Number ______ = 16843009(Dec), 01010101(Hex)
(16) Week of Manufacture _________________ = 1
(17) Year of Manufacture _________________ = 2010
(18) EDID Version Number _________________ = 1
(19) EDID Revision Number ________________ = 3
(20) VIDEO INPUT DEFINITION :
Analog Signal
0.700V/0.300V
Separate
Composite
Sync on Green
(21) Maximum Horizontal Image Size _______ = 0 mm
(22) Maximum Vertical Image Size _________ = 0 mm
(23) Display Gamma _______________________ = 2.20
(24) DPMS and Supported Feature(s) :
Preferred Timing Mode
Active Off
RGB Color Display
(25-34) CHROMA INFO :
RedX : 0.635
Company Confidential LG ______________________ Delta____________
72
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
RedY : 0.350
GreenX : 0.343
GreenY : 0.587
BlueX : 0.146
BlueY : 0.074
WhiteX : 0.306
WhiteY : 0.333
(35) ESTABLISHED TIMING I :
720 X 400 @ 70Hz (IBM,VGA)
640 X 480 @ 60Hz (IBM,VGA)
640 X 480 @ 67Hz (Apple,Mac II)
640 X 480 @ 72Hz (VESA)
640 X 480 @ 75Hz (VESA)
800 X 600 @ 56Hz (VESA)
800 X 600 @ 60Hz (VESA)
(36) ESTABLISHED TIMING II :
800 X 600 @ 72Hz (VESA)
800 X 600 @ 75Hz (VESA)
832 X 624 @ 75Hz (Apple, Mac II)
1024 X 768 @ 60Hz (VESA)
1024 X 768 @ 70Hz (VESA)
1024 X 768 @ 75Hz (VESA)
1280 X 1024 @ 75Hz (VESA)
(37) Manufacturer's Reserved Timing :
1152 X 870 @ 75Hz (Apple, Mac II)
(38-53) Standard Timing Identification :
800 X 600 @ 85Hz
800 X 600 @ 120Hz
1024 X 768 @ 85Hz
1280 X 800 @ 60Hz
1280 X 1024 @ 60Hz
1280 X 960 @ 60Hz
1400 X 1050 @ 60Hz
1440 X 900 @ 60Hz
( 54- 71) Detailed Timing / Descriptor Block 1 :
1024 X 768 : Pixel Clock : 115 MHz
Company Confidential LG ______________________ Delta____________
73
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Horizontal Image Size : 0 mm Vertical Image Size : 0 mm
Refreshed Mode : Non-Interlaced
Horizontal :
Active Time : 1024 pixels Blanking Time : 160 pixels
Sync Offset : 48 pixels Sync Pulse Width : 32 pixels
Border : 0 pixels
Vertical :
Active Time : 768 lines Blanking Time : 45 lines
Sync Offset : 3 lines Sync Pulse Width : 4 lines
Border : 0 lines
None(Normal)
Digital Separate, Horizontal Polarity (-) Vertical Polarity (-)
( 72- 89) Detailed Timing / Descriptor Block 2 :
1280 X 720 : Pixel Clock : 130 MHz
Horizontal Image Size : 0 mm Vertical Image Size : 0 mm
Refreshed Mode : Non-Interlaced
Horizontal :
Active Time : 1280 pixels Blanking Time : 160 pixels
Sync Offset : 48 pixels Sync Pulse Width : 32 pixels
Border : 0 pixels
Vertical :
Active Time : 720 lines Blanking Time : 30 lines
Sync Offset : 5 lines Sync Pulse Width : 5 lines
Border : 0 lines
None(Normal)
Digital Separate, Horizontal Polarity (-) Vertical Polarity (-)
( 90-107) Detailed Timing / Descriptor Block 3 :
Monitor Range Limits :
Horizontal Freq. : 15-100 kHz
Vertical Freq. : 47-120 Hz
Pixel Clock : 170 MHz
(108-125) Detailed Timing / Descriptor Block 4 :
Monitor Name :
BX274
(126) No Extension EDID Block(s)
(127) CheckSum is OK
Company Confidential LG ______________________ Delta____________
74
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
12. RS232

RS232 Setting

Baud rate: 9600

Parity check: None
Data bit: 8
Stop bit: 1
Flow Control None
Minimum delay for next command: 1ms

Company Confidential LG ______________________ Delta____________

75
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Hyper Terminal setting guide
1 Connect the RS232 Cable between your computer and Projector.
2 Open HyperTerminal
Window2000/XP HyperTerminal path：
Start \ Programs \ Accessories \ Communications \ HyperTerminal。

：
Setting the HyperTerminal parameter：

Step 1. Type the connection name .

Company Confidential LG ______________________ Delta____________

76
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Step2. Choose the COM port for your RS232 Cable connected to.

Step3. In Bits per second choose “ 9600 ” and in Flow control choose “ None ”。

Company Confidential LG ______________________ Delta____________

77
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Step4. Click the File and choose Properties to setting Keyboard parameter。

Step5. In Setting page , choose Emulation type for your keyboard.

Company Confidential LG ______________________ Delta____________

78
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Step6. Click ASCII Setting icon to setup ASCII code parameter.

Step7. Mark Send Line ends with line feeds and Echo typed characters locally and click OK
bottom to complete setting.

Company Confidential LG ______________________ Delta____________

79
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Control Command Structure

The command is structured by the Header code, command code, data code and end code.
Most of the commands are structured except some for the compatibility issue with other
projectors.

Header code Command code Data code End code

HEX 7Eh Command Data 0Dh
ASCII ‘~’ Command Data CR

Control Sequence

The projector may send a return code after it received a command. If the command isn’t
received correctly, the projector will not send the return code

Operation Command

The operation commands execute the basic operation setting of this projector.

Operation ASCII HEX

Power On ※ ~ P N CR ※ 7Eh 50h 4Eh 0Dh
Power Off ~ P F CR 7Eh 50h 46h 0Dh
Auto Image ~ A I CR 7Eh 41h 49h 0Dh
Lamp Hour Reset ~ R L CR 7Eh 52h 4Ch 0Dh
Input Select RGB ~ S R CR 7Eh 53h 52h 0Dh
Input Select Video ~ S V CR 7Eh 53h 56h 0Dh

※ Power On command will only word at system standby.

※ CR : Carriage Return.

Company Confidential LG ______________________ Delta____________

80
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
Remote Command
The remote commands simulate the code send from IR remote handset.
Button’s name ASCII HEX
UP arrow ~ r U CR 7Eh 72h 55h 0Dh
DOWN arrow ~ r D CR 7Eh 72h 44h 0Dh
LEFT arrow ~ r L CR 7Eh 72h 4Ch 0Dh
RIGHT arrow ~ r R CR 7Eh 72h 52h 0Dh
POWER ~ r P CR 7Eh 72h 50h 0Dh
INPUT ~ r I CR 7Eh 72h 49h 0Dh
AUTO ~ r A CR 7Eh 72h 41h 0Dh
KEYSTONE+ ~ r K CR 7Eh 72h 4Bh 0Dh
KEYSTONE- ~ r J CR 7Eh 72h 4Ah 0Dh
MENU ~ r M CR 7Eh 72h 4Dh 0Dh
STATUS ~ r S CR 7Eh 72h 53h 0Dh
MUTE ~ r T CR 7Eh 72h 54h 0Dh
ZOOM+ ~ r Z CR 7Eh 72h 5Ah 0Dh
ZOOM- ~ r Y CR 7Eh 72h 59h 0Dh
BLANK ~ r B CR 7Eh 72h 42h 0Dh
FREEZE ~ r F CR 7Eh 72h 46h 0Dh
VOLUME+ ~ r V CR 7Eh 72h 56h 0Dh
VOLUME- ~ r W CR 7Eh 72h 57h 0Dh
Enter ~ r N CR 7Eh 72h 4Eh 0Dh
Set Value Command

ITEM ASCII HEX

Brightness ~ s B ? CR ※ 7Eh 73h 42h ?h 0Dh
Contrast ~ s C ? CR 7Eh 73h 43h ?h 0Dh
Color ~ s R ? CR 7Eh 73h 52h ?h 0Dh
Tint ~ s N ? CR 7Eh 73h 4Eh ?h 0Dh
Scaling ~ s A ? CR 7Eh 73h 41h ?h 0Dh
Color Temperature ~ s T ? CR 7Eh 73h 54h ?h 0Dh
Projection Mode ~ s J ? CR 7Eh 73h 4Ah ?h 0Dh
※ ? : ASCII Data

Company Confidential LG ______________________ Delta____________

81
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Data Range

ITEM Set Data Range Source

Brightness 0 ~ 100 ALL
Contrast 0 ~ 100 ALL
Color 0 ~ 100 Video
Tint 0 ~ 100 Video
Scaling 0: Fill 1: 4:3 2: 16:9 3 :Letter ALL
Box 4 :Native
Color Temperature 0:Cold 1:Normal 2:Warm ALL
Projection Mode 0:Front 1:Rear 2:Rear+Ceiling ALL
3:Ceiling

Attention: Data range may be different for different models

Example 1. Adjust Brightness value to 100

Send Command: ~sB100CR
Example 2. Adjust Color Temperature to Warm
Send Command: ~sT2CR
Query Command

ITEM ASCII HEX

Software Version ~ q V CR 7Eh 71h 56h 0Dh
Power State ~ q P CR 7Eh 71h 50h 0Dh
Input Select ~ q S CR 7Eh 71h 53h 0Dh
Lamp Hours ~ q L CR 7Eh 71h 4Ch 0Dh
Brightness ~ q B CR 7Eh 71h 42h 0Dh
Contrast ~ q C CR 7Eh 71h 43h 0Dh
Color (Video) ~ q R CR 7Eh 71h 52h 0Dh
Tint (Video) ~ q N CR 7Eh 71h 4Eh 0Dh
Scaling ~ q A CR 7Eh 71h 41h 0Dh
Color Temperature ~ q T CR 7Eh 71h 54h 0Dh
Projection Mode ~ q J CR 7Eh 71h 4Ah 0Dh

Company Confidential LG ______________________ Delta____________

82
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

Response message

ITEM Response Message examples

Software Version …..
Power State On Off
Input Select RGB Video S-Video Component
Lamp Hours 2000
Brightness 100
Contrast 100
Color (Video) 100
Tint (Video) 100
Scaling Fill 4:3 16:9 LetterBox Native
Color Temperature Cold Normal Warm
Projection Mode Front Rear+Ceiling Rear Ceiling

Example 1. Get Brightness value

Send Command: ~qBCR
Response: 100
Example 2. Get Color Temperature
Send Command: ~qTCR
Response: Warm

Company Confidential LG ______________________ Delta____________

83
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05

13. Projector Dimensions

Company Confidential LG ______________________ Delta____________

84
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
14. Spare part list

BS274 & BX274 Spare Parts List

Photo LG P/N P/N DESCRIPTION BS274 BX274

1 ACQ36734807 3392128904 TOP COVER PC 5VB BLK V

2 ACQ36734808 3392133804 TOP COVER PC 5VB BLK V

3 ABQ36744403 3392132904 BTM COVER PC 5VB GRAY V V

4 COV30606101 3392123102 IO COVER PC 5VB BLK V V

5 ACQ36744703 3392129001 FRONT COVER PC 5VB BLK V V

6 ACQ36744803 3392133001 LAMP DOOR PC 5VB GRAY V V

7 MCK42367502 3392124001 LENS CAP PC 94V0 TRANSPARENT V V

8 MDJ42498304 3797697800 COLOR WHEEL MODULE V V

9 EAL32377714 3622404311 DC FAN ASSY BUB04512HD-SM00 L70/25 45 S V V

10 EAL32377713 3622609011 DC FAN ASSY AUB0612VHD-SM00 L70/25 60 S V V

11 COV30606201 5600601621 PW B ASSY MAIN BD J5P ULTRA-07-01 V

12 COV30606301 5600601620 PW B ASSY MAIN BD J5P ULTRA-07-02 V

13 COV30606401 5600601630 PW B ASSY POWER+BALLAST V V

14 EBT61018501 5600601241 PW B ASSY DMD BD J5P ULTRA-01 V V

15 EBT61018602 5600601233 PWB ASSY LVPS BD V V

16 EBT61018701 5600601265 PW B ASSY KEYPAD BD J5P ULTRA-02 V V

17 EBT61018801 5600601239 PW B ASSY INDEX BD J5P ULTRA-01 V V

18 EBT61018901 5600601238 PW B ASSY IR BD J5P ULTRA-01 V V

19 EBT56810405 5811116362-S OPTICAL MODULE S450 SVGA REG ASSY V

20 EBT56810406 5811116361-S OPTICAL MODULE S450 XGA REG ASSY V

21 COV30606501 5811116907-SY LAMP MODULE J5P ULTRA E 215W ASSY V V

22 MAY42368104 3513710501 CARTON CRGD PAPER 325*292*185 V V

23 EAD56807701 3090208201 AC POWER CORD 3P 3G*0.75mm^2 L1800 BLK V V

24 EAD56896001 3081405002 CABLE SIGNAL D-SUB D-SUB L1800 BLK V V

25 SAC30190908 3534117301 CD SOFTWARE PACKING ASSY V V

26 MBM42961801 5010069500 MANUAL WARRANTY J5P 3LB LGE V V

Company Confidential LG ______________________ Delta____________

85
2011/11/21
 Delta Elec. Inc. BS274_BX274 rev.05
27 MAF42368002 3523502000 CARRYING CASE PLE 270*220*90 V V

28 MKJ42367902 5041819000 REMOTE CONTROLLER 15KEYS V V

29 MFA42499604 3392122800 ADJ FOOT FRONT PC+ABS 94V0 GRAY V V

30 MFA42499702 3245068400 FOOT SIRUB V-0 41.8*12.2*4.8 BLK V V

31 MFA55194901 3392057400 FOOT RING PC 94V0 BLK V V

32 MCK63607901 3245033800 FOOT RUBBER 94V0 14.4*6.1 BLK V V

Hexagonal Screw
33 MEG42520801 3461431703 V V
STAND OFF S18C HEX 4.7*4 F#4-40 M # 4-

SCREW (Fix Top cover & Bottom Case)

34 MEG42522002 3106160400 V V
SCREW T φ3*1.06*8 PAN C S18C NI

Speaker Assembly BS274&BX274 4OHM 4W 73dB

A10 COV30469401 3791151902 V V
15.5x3MM

35 COV31208901 3791149401 THERMOSTAT ASSY V V

Company Confidential LG ______________________ Delta____________

86
2011/11/21
1 3 4 5 6 7

8 9 10 11 13 14

15 16 17 18 19 21

22 23 24 25 26 27

28 29 30 31 32 A10

33 34 35