LG BX401C User manual

DLP PROJECTOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : FM84E
MODEL : BX401C BX401C-JD
website:http://biz.LGservice.com
Internal Use Only
Printed in KoreaP/NO : MFL62399103 (0909-REV00)

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
CONTENTS
CONTENTS .......................................................................................................2
SAFETY PRECAUTIONS .................................................................................3
REPLACING THE LAMP ..................................................................................4
SPECIFICATIONS.............................................................................................6
ADJUSTMENT INSTRUCTION.........................................................................9
BLOCK DIAGRAM..........................................................................................15
EXPLODED VIEW...........................................................................................20
SVC. SHEET .......................................................................................................
PRINTED CIRCUIT BOARD ...............................................................................

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An lsolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this monitor is blown, replace it
with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Due to high vacuum and large surface area of picture tube,
extreme care should be used in handling the Picture Tube. Do not
lift the Picture tube by it's Neck.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩ and 5.2MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
3.5mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
1.5 Kohm/10W
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF

1. Lamp Replacement
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.
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.
2. Be careful when replacing lamp
- 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.
3. To obtain a replacement Lamp unit
Lamp model number is on page 41. Check the lamp model and then purchase it from an LG Electronics Service Center.
Using another manufacturers lamp may cause damage to the projector.
4. Lamp unit disposal
Dispose of the used lamp by returning it to the LG Electronics Service Center.
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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
REPLACING THE LAMP
Lamp indicators
<Front panel of the Projector>

5. Replacing the Lamp
(1) Turn 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.)
(2) Unscrew the screw from the lamp cover using a screwdriver.
(3) After lifting the lamp cover off, remove the two retaining screws on the lamp case with a screwdriver.
(4) Lift 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.
(7) Tighten 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.)
[Note]
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.
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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Lamp case screw
Knob
Screw

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
NOTE: Specifications and others are subject to change without notice for improvement .
■Scope
This specification is applied all of the DLP Projector FM84E Chassis.
■Test Condition
1) Temperature: 25±5°C, CST : 40 ±2°C
2) Relative Humidity: 65±10%
3) Power Voltage: Standard input voltage (100-240V~, 50/60Hz)
* Standard Voltage of each products is marked by models.
4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with of B.O.M
5) The receiver must be operated for about 30 minutes prior to the adjustment.
■Test and Inspection Method
1) Performance: LG TV test method followed
2) Demanded other specification
SAFETY: CE specification (EN60950-1)
EMC: CE (EN55022 Class A)
■General Specification
No. Item
Video input applicable system
Power
Input Voltage
Market
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
1) NTSC M
2) NTSC 4.43
3) PAL-B, D, G, H, I
4) PAL M
5) PAL N
6) PAL 60
7) SECAM
SMPS
AC90V-240V~@ 50/60Hz
World wide
0 40 deg
75 %
-20 60 deg
85 %
3.579545 / 60Hz
4.433618 / 60Hz
4.433618 / 50Hz
3.575611 / 60Hz
3.582056 / 50Hz
4.433618 / 60Hz
4.286 / 50Hz
1
2
3
4
5
6
7
8
Specification
Min Typ Max Unit
Remark
SPECIFICATIONS

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
■Feature and Function
No. Item
REMOCON
HDMI Input
RGB Input
RGB Output
Component input
Composite input
USB Port
RS-232C Port
Local Key
Sound
OSD Language
Source
Picture Mode
Contrast
Brightness
Sharpness
Color
Tint
Color R
Color G
Color B
Color Temp
Gamma
Gamma curve shift
Brilliant Color
White Peaking
Expert Color
Black level
ARC
Overscan
NEC Code
1
2 Separate
1 Separate
1 (Y, PB,PR)
480i,480p,720p,1080i,576i,576p
1 480i, 576i
1
1
MENU, SOURCE, AUTO, OK , ), *, <, >, POWER
No
Korean/English/Deutsche/Italian/Espanol/Chinese/
France/Portugal/Svenska/Polish/Brazil-portugal(Brazil)
/Turkish /Arabic
RGB1(Component1)/ RGB2(Component2)/ HDMI/ Video
Normal, Presentation, Sports, Film, Game, Golf, Bright, User
0 100
0 100
0 100
0 100
R50 G50
0 100
0 100
0 100
Natural / Cool / Medium / Warm
Low/Middle/High/Maximum/Cinema
Gamma Curve shift R,G,B, Reset
On/Off
010
R,G,B,C,M,Y Gain
R,G,B,C,M,Y Saturation
R,G,B,C,M,Y Hue
Reset
Low / High
4:3 / 16:9
Off~10%
LGE key code
HDMI Jack
D-Sub 15 pin
D-Sub 15 pin
D-Sub 15 pin
Through RCA to D-Sub Gender
RCA Jack(Yellow)
USB Jack B type (only for download)
Control the SET w/PC
All source
Video/ component1/Component2
Video/ component1/Component2
RGB1,RGB2 only
RGB1,RGB2 only
RGB1,RGB2 only
In case of Golf Game or Bright or User in
Picture Mode, automatically the color
temp menu is disappeared.
HDMI(YCbCr input),HDMI(RGB DTV input)
Video
Component1,Component2, RGB1,
RGB2, HDMI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Specification
Min Typ Max Unit
Remark

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No. Item
Flip horizontal
Flip vertical
Sleep Time
Auto Sleep
Set ID
Time Alarm
Time Keeper
Digital Zoom
H/V keystone
Background
Keystone Reset
Blank Image
Screen Capture
Lamp Mode
Monitor Out
Auto configure
Clock
Phase
Horizontal Position
Vertical Position
Off,10,20,30,60,90,120,180,240 Min
Off,10,20,30,60,90,120,180,240 Min
199
Off, 5,10,15,20,25,30,35,40,45,50,55,60 Min
Off,
1,2,3,4,5,6,7,8,9,10,15,20,25,30,35,40,45,50,55,
60 Min
100% 250%
0 100
Signal/pattern
Black / Blue / Green / Captured Image/Logo
High bright / Economic
RGB1/RGB2
-20 20
063
-50 50
-25 25
max value can be different depends on
input resolutions. (RGB1,RGB2 only)
Left,Right,Top,Bottom Corner keystone
RGB1,RGB2 only
The Min and max value can be different
depends on input resolutions. (RGB1,
RGB2 only)
RGB1,RGB2 only
The Min and max value can be different
depends on input resolutions. (RGB1,
RGB2 only)
The Min and max value can be different
depends on input resolutions. (RGB1,
RGB2 only)
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Specification
Min Typ Max Unit
Remark

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Application Object
This instruction is for the application to the DLP Projector
(Chassis : FM84E).
2. Notes
(1) The power source insulation of this DLP Projector is not
charging type and you may not use the transformer for
insulation. It is advised to use an insulation transform
between the power supply cable and power input of the set
to protect the test equipment.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity.
(4) The set must be on for 5 minutes prior to any adjustment.
3. Composition of Adjustment Mode
(1) Pressing the adjust key on the service remote will open or
close the service menu.
(2) Press the ADJ key to exit the service menu.
(3) Preparation for Adjustment
(4) Power is connected in set to be power on.
(5) Do heat run 5minutes.
4. Folding Mirror Adjustment
4-1. Illuminator Adjustment Sequence
After putting optical engine on JIG, check the Illuminator
adjustment part.
Check the full white screen and make adjustments in the
following sequence.
(1) Up and Down Adjustment
1) Turn screw (A) up / down adjustment to the right and
mark where the image is aligned.
2) Turn screw (A) up / down adjustment to the left and
mark where the image is aligned.
3) Turn screw (A) up / down adjustment to the right / left
and mark where the image is aligned. Fix the
adjustment screw in position.
(2) Left and Right Adjustment 1
1) Turn screw (B)Left / Right adjustment to the left and
mark where the image is aligned.
2) Turn screw (B) Left / Right adjustment to the right and
mark where the image is aligned.
3) Turn screw (B)Left / Right adjustment to the right / left
and mark where the image is aligned. Fix the
adjustment screw in position.
(3) Final Adjustment
Fix the adjustment screw in position. (1), (2) adjustment
twice and find the optimum position. Check the image with
the naked eye for optimum alignment.
ADJUSTMENT INSTRUCTION
<Fig. 4-1> Illuminator Adjustment Part by Folding Mirror
Step 1 Step 2 Step 3
<Fig. 2> Illuminator Up / Down Adjustment Sequence
Step 1 Step 2 Step 3
<Fig. 4-2> Illuminator Left/Right Adjustment Sequence 1
Left and right
adjustment screw B
Left and right
adjustment screw C
Top and bottom
adjustment screw A

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4-2. Illuminator Phenomenon Adjustment
4-3. Coherent Light Source Adjustment
(1) Coherent light source specification
: 100% of center black brightness
(Refer to product specification)
=> Same specification applied for coherent light source of <Fig. 4-3> type
(2) Optical axis
: Adjust so that it is set at the center.
<Fig. 4-3> Coherent Light Source
Up/down
screw A
Right
(tighten
direction)
Adjustment
part
Screen state
Initial state State after adjusting
Screw
direction Description
At first, upside illuminator goes down
and right illuminator also goes down in
detail.
Left
(loosen
direction)
At first, downside illuminator goes
down and left illuminator also goes
down.
left/right
screw B
Right
(tighten
direction)
At first, left illuminator goes down and
downside illuminator also goes down.
Left
(loosen
direction)
At first, right illuminator goes down and
upside illuminator also goes down.
left/right
screw C
Right
(tighten
direction)
At first, left illuminator goes down and
downside illuminator also goes down.
Left
(loosen
direction)
At first, right illuminator goes down and
upside illuminator also goes down.
Illuminator goes down direction Illuminator goes down area

5. Caution for DMD
(Digital Micro-mirror Device)
5-1. Caution for DMD ESD
(1) Connector the grounding to prevent a damage of ESD
(Electrostatic Discharge) when handing the DMD.
(2) Wear a wrist strap to connect the ESD grounding in flesh
necessarily.
(3) Connect the ESD ground to workstation and an electric
conductor.
(4) Save the DMD after getting rid of a static electricity. Keep
it at an exclusive case when moving it When grounding,
open the case.
(5) Put on gloves for preventing static electricity.
(6) All work is done at static free location. Attach the tape or
remove a dust on the DMD front or DMD back pin
5-2. Caution for DMD Clean
(1) Follow the procedure and caution to prevent the screen
from being scratched.
(2) When DMD glass stains with dust, polish the front and
back DMD glass with soft cloth. Then, do it again after
rotating 180 degree the DMD. If necessary, keep under
observation.
(3) Don’t clean the DMD with the high pressure. The static
electricity and pressure will damage the DMD.
6. EDID Data input
6-1. Required Test Equipment
(1) PC, DDC adjustment Jig(PC serial to D-sub connection
machinery)
(2) DDC record S/W (EDID Data Write & Read)
(3) D-sub terminal, DVI_D
(4) Remote control
6-2. Preparation for Adjustment & Setting
of the device
(1) Set like <Fig. 6-1>, PC and JIG
(2) Press “FRONT-AV” key of the adjustment remote
controller to release EDID Write Protection.
(3) Practice of DDC record S/W(EDID Data Write & Read)
(4) Make sure that the OK signal and the checksum are equal
to the values given at the record file.
(5) When any fail is occurred at the DDC record S/W, because
the EDID Write Protection may not be released, perform
(2) ~ (4) again.
6-3. EDID Data
1) RGB 1/2
2) HDMI : BLOCK 0
3) HDMI : BLOCK 1
- 11 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PC
JI G
DLPPJTR SET
<Fig. 6-1> Device setting diagram for EDID data input
<Fig. 6-2> RGB IN1/2, RGB OUT Port
012 3 4 5 67 8 9 A BCD EF
00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 13 01 03 7E FF 8F 78 08 31 37 A0 5B 51 96 24
20 0F 4C 50 AF CF 00 31 59 45 59 61 59 71 4F 81 40
30 81 59 81 80 61 40 8F 2F 78 D0 51 1A 27 40 58 90
40 34 00 C4 34 21 00 00 1A DE 0D D0 D8 20 90 2E 10
50 24 48 13 00 D0 90 21 00 00 1C 00 00 00 FD 00 32
60 55 1A 5A 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 50 52 4F 4A 45 43 54 4F 52 0A 00 55
012 3 4 5 67 8 9 A BCD EF
00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 13 01 03 80 FF FF 78 0A 31 33 A0 5B 51 96 24
20 0F 4C 50 AF CF 00 31 59 45 59 61 59 71 4F 81 40
30 81 59 81 80 90 40 C3 1E 00 20 41 00 20 30 10 60
40 13 00 00 00 00 00 00 1A 8C 0A D0 8A 20 E0 2D 10
50 10 3E 96 00 D0 90 21 00 00 1C 00 00 00 FD 00 32
60 55 1A 5A 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 50 52 4F 4A 45 43 54 4F 52 0A 01 9C
012 3 4 5 67 8 9 A BCD EF
00 02 03 16 30 4B 22 20 01 03 84 05 10 12 13 14 1F
10 65 03 0C 00 10 00 01 1D 00 72 51 D0 1E 20 6E 28
20 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20
30 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 90 20 40
40 31 20 0C 40 55 00 C4 8E 21 00 00 18 01 1D 00 BC
50 52 D0 1E 20 B8 28 55 40 C4 8E 21 00 00 1E 01 1D
60 80 D0 72 1C 16 20 10 2C 25 80 C4 8E 21 00 00 9E
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 DA

7. Check the EDID
(1) Configure the equipment same to <Fig. 7>.
(2) Select [Read Data & Verify] of the DDC record S/W.
* Be sure that it is not [Write Data & Verify] of the substrate
adjustment.
(3) Make sure that the OK signal and the checksum are equal
to the values given at the record file.
* Because it is the process to read and check the EDID, it
is not necessary to release the EDID Write Protection.
8. ADC Gain/Offset Adjustment
(1) Required Test Equipment
1) Video Signal Generator(Master equipment) : 1EA
2) Remote control : 1EA
(2) Setting of the Device
Set the equipment as <Fig. 8-1>.
(3) Preparation for Adjustment
1) Set the output of the Video signal Generator to 720P
60Hz. (720P/60Hz)
- MSPG-925LTH/FA : Model 217
- MSPG-1025D/P, MSPG-332
2) Select the ‘8 Color 16 Gray step Pattern(Pattern:8) of
<Fig.8-2> at Video signal Generator(Master equipment).
8-1. RGB GAIN/OFFSET Adjustment
(1) Select ADJ ->RGB1 ADJUSTMENT -> ▶(Vol+) Auto Gain/
Offset Set ■(Enter) -> at the adjustment remote control.
(The actual adjustment is automatically performed by the
system Micom.)
(2) After adjusting is finished, check ‘RGB ADC Success!’
message and press ‘OK’ key at the remote controller for
adjusting to exit.
(It does not operate except the ‘OK’ Key. When it exits from
the adjustment screen, it searches for the signal again.)
(3) When it fails to adjust, ‘RGB ADC Fail!’ message is
displayed, and then press ‘OK’ key at the remote controller
to exit.
(It does not operate except the ‘OK’ Key. When it exits from
the adjustment screen, it searches for the signal again.)
(4) When the signal other than 720p 60Hz is entered and the
operation same to (1) is performed, ‘Invalid format’ OSD is
displayed and it automatically searches for the signal.
(5) When adjusting is finished, press the ADJUST key to
check from the OSD for making sure that adjusting is
finished.
If it fails, ‘Fail’ OSD is displayed at the ADJUST menu, but
if it succeeds, ‘OK’ OSD is displayed at the ADJUST menu.
* When there is no adjustment, no OSD is displayed.
* When there is no input signal, the sub-item ‘Auto Gain/
Offset Set’ of the RGB ADJUSTMENT is not displayed.
8-2. Component GAIN/OFFSET Adjustment
(1) Select ADJ -> COMPONENT1 ADJUSTMENT -> ▶(Vol+)
-> Auto Gain/Offset Set ■(Enter) -> at the adjustment
remote control.
(The actual adjustment is automatically performed by the
system Micom.)
(2) After adjusting is finished, check ‘Component ADC
Success!’ message and press ‘OK’ key at the remote
controller for adjusting to exit.
(It does not operate except the ‘OK’ Key. When it exits
from the adjustment screen, it searches for the signal
again.)
(3) When it fails to adjust, ‘Component ADC Fail!’ message is
displayed, and then press ‘OK’ key at the remote controller
to exit.
(It does not operate except the ‘OK’ Key. When it exits
from the adjustment screen, it searches for the signal
again.)
(4) When the signal other than 720p 60Hz is entered and the
operation same to (1) is performed, ‘Invalid format’ OSD is
displayed and it automatically searches for the signal.
(5) When adjusting is finished, press the ADJUST key to
check from the OSD for making sure that adjusting is
finished.
If it fails, ‘Fail’ OSD is displayed at the ADJUST menu, but
if it succeeds, ‘OK’ OSD is displayed at the ADJUST menu.
* When there is no adjustment, no OSD is displayed.
* When there is no input signal, the sub-item ‘Auto Gain/Offset
Set’ of the COMPONENT1 ADJUSTMENT is not displayed.
- 12 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
SCREEN Projector Cable Video Singal
Generator
<Fig. 8-1> Device setting diagram for RGB offset/gain Adjustment
<Fig. 8-2> 8 Color 16 Gray step Pattern

9 . CWI/White Balance Measurement
Condition
(1) CWI and White Balance is adjusted using the
measurement of color coordinate. So periodically adjust
within time set and you should provide the replacement
equipment to use the correction.
(2) Adjust the screen size to a minimum of 40 inches.
(3) Place the CL-200 on the center of projection screen.
(4) Make the measurement condition under 1Lux for CL-200
to measure the correct color coordinate.
10. CWI Adjustment
10-1. Setting of the Device
Set the equipment as <Fig. 10-1>.
10-2. Required Test Equipment
(1) Illuminometer (Model : CL-200) 1EA : Chromaticity
measurement from projection screen center.
(2) Set fixing device 1EA
(3) Remote control 1EA
10-3. Preparation for Adjustment
(1) Adjust the Center and Size for next progress.
(2) Select ADJ-> CWI -> ▶(Vol+) at the adjustment remote
control. (Default value : 270)
(3) After entering into the CWI, press ■ENTER key at the
adjustment remote control to switch to the Full Red screen
as shown at <Fig. 10-2>. At this time, read X and Y values
at the center, the color coordinates of the illuminometer.
10-4. Adjustment
(1) Adjust CWI to the left/right value by using the volume
buttons at the first adjustment value is preset to 270.
(2) Illuminometer color coordinates is changed when pressing
volume button.
(3) X coordinates usually get maximum value at X=
0.645±0.02 and Y coordinates usually get minimum value
at Y=0.345±0.02. Adjust this value by pressing volume
button on the remote control. Average value is 270.
(4) Check the red pattern whether it is entirely uniform.
(5) Press the Enter key one more time, and then you can
enter to Ramp pattern as shown <fig. 10-3>. At this time,
Check whether each color is linear.
(6) When there is no problem after checking, press ‘EXIT’ key
at the adjustment remote controller to exit.
11. White Balance(Auto CCA) adjustment
11-1. Required Test Equipment
(1) Illuminometer (Model : CL-200) 1EA
(2) RS-232C Cable 1EA
(3) Set fixing device 1EA
(4) Remote control 1EA
11-2. Equipment Composition
Use the RS232C cable to connect the set and the CL-200 as
shown at <Fig. 11-1> Device Setting Diagram.
- 13 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Equipment to monitor Lx,X,Y data
Illuminometer
Set
Set fixing device
<Fig. 9> Device Setting Diagram for CWI Adjustment
270
<Fig. 10-2> Full RED Pattern
270
<Fig. 10-3> Ramp Pattern
Equipment to monitor Lx,X,Y data
Illuminometer
Set
Set fixing device
<Fig. 12> Device Setting Diagram

11-3. Adjustment
(1) Select ADJ -> AutoCCA -> ▶(Vol +) at the adjustment
remote controller.
(2) The White Balance adjustment is automatically started.
(3) After about 45 second, check “Succuss” message (press
‘ENTER’ key at the remote controller for adjusting to exit.)
(4) When ‘Fail’ message is displayed, Perform (1)~(3) again
12. Measuring the Projector Brightness
12-1. Preparation for Adjustment
(1) Set Setting
- Input source: Default(not necessary to specify the source)
(2) Measuring the Brightness
- Remote control : Adj -> optic check -> White
12-2. Configuring the Projector Brightness
Measuring JIG Software
(1) Select the Model: BX401C-JD
(2) Screen Size: W: 813, H: 610
(3) Examination
12-3. Setting the Brightness Measuring Screen
(1) Screen size setting
- Correctly set to the screen size by model as shown at
<Fig. 12-3>.
- 14 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
(1) Select Model
(3) Examination (2) Screen Size
<Fig. 12-1> Configuring the Brightness Measuring JIG Software
<Fig. 14> Configuring the Brightness Measuring JIG
<Fig. 6-3> Brightness Measuring Screen Size

- 15 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
BLOCK DIAGRAM

- 16 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
DDP3020
(133.3Mhz ARM926)
CH_M CH_1
I2C_CHM (+3.3V)
I2C_CH1 (+3.3V)
ADC+HDMI Rx
(MST3367CMK)
0x9C0x9C
Video Decoder
(TW9910)
0x8A0x8A
DDP 3020 EEPROM
(AT24LC32AN: Microchip)
0xA00xA0
MCU
(WT61P8)
0x26(Programmable)0x26(Programmable) WT61P8 EEPROM
(AT24C02BN)
0xA00xA0
I2C_EEPROM (+3.3V)
IC1103
IC1102
IC107 IC201 IC501

- 17 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
JK1002JK102JK101JK103JK100JK200 IC1101JK500
Main Board (Bottom) Main Board (Top)
IC900
IC601 P600
IC901
IC300
IC401
IC404
IC501
IC503
X500
IC110 IC102
IC104
P1100
P800
P1102
P902
P801 P1000 P1103 P1004
P1104
P901
P1104
P501
P903
IC600
IC107
IC111
IC1002
IC1103
IC201
IC1004
IC701
IC800
IC702
IC1000
IC402
IC103
IC803
IC108
IC801
IC1102
IC1100
IC109
IC700 IC1003
X200

- 18 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
DMD Board (Top)
DMD Board (Bottom)
Keypad Board
P1
Ballast
X10
X3 5P

- 19 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Temp. Board
P901
IR Board
IC802
P804
P40
Color Wheel Index Board
Power Unit (SMPS+PFC Board)
SMPS
PFC Board
P100
P101
P102
P201
P103
P100 : Thermostat cable P101 : Ballast Power cable P102 : PFC cable P201 : Main Power cable

- 20 -
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
301
510
510
103
102
104
105
107
106
590
420
400
401
611
610
600
520
580
581
571
570
572
530
A2
310
101
402
300
410
500
601
470
440 430
450
460
EXPLODED VIEW