LG MW-60SZ12A Schematic
LCD Projection Monitor
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : RE-01JB
MODEL : MW-60SZ12
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Servicing Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrostatically Sensitive (ES) Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Description of Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Correction of Screen Tilt & Keystone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Replacing the Lamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Description of each Block Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Description of Micom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Exploded View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Exploded View Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- 2 -
Contents
Safety Precautions
- 3 -
1. Before returning an instrument to the customer, always make a safety check
of the entire instrument, including, but not limited to, the following items:
a. Be sure that no built-in protective devices are defective and/or have been
defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all
missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assemblies in the
cabinet, be sure to put back in place all protective devices, including, but
not limited to, nonmetallic control knobs, insulating fishpapers, adjustment
and compartment covers/shields, and isolation resistor/capacitor networks.
Do not operate this instrument or permit it to be operated without all
protective devices correctly installed and functioning.
b. Be sure that there are no cabinet openings through which an adult or child
might be able to insert their fingers and contact a hazardous voltage. Such
openings include, but are not limited to, (1) spacing between the picture
tube and the cabinet back, (2) excessively wide cabinet ventilation slots,
and (3) an improperly fitted and/or incorrectly secured cabinet back cover.
c. Antenna Cold Check-With the instrument AC plug removed from any AC
source, connect an electrical jumper across the two AC plug prongs. Place
the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter
lead in turn to each tuner antenna input exposed terminal screw and, if
applicable, to the coaxial connector. If the measured resistance is less than
1.0 megohm or greater than 5.2 megohm, an abnormality exists that must
be corrected before the instrument is returned to the customer. Repeat this
test with the instrument AC switch in the off position.
d. Leakage Current Hot Check-With the instrument completely reassembled,
plug the AC line cord directly into a 120 V AC outlet.
(Do not use an isolation transformer during this test.) Use a leakage current
tester or a metering system that complies with American National Standards
Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters
Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on
position and then in the off position, measure from a known earth ground
(metal waterpipe, conduit, etc.) to all exposed metal parts of the instrument
(antennas, handle bracket, metal cabinet, screwheads, metallic overlays,
control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5
milliamp. Reverse the instrument power cord plug in the outlet and repeat
the test.
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN
INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER.
e. X-Radiation and High Voltage Limits-Because the picture tube is the pri-
mary potential source of X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions. For continued X-radiation
protection, the replacement picture tube must be the same type as the original. Also, because the picture tube shields and mounting hardware perform
an X-radiation protection function, they must be correctly in place.
High voltage must be measured each time servicing is done that involves
B+, horizontal deflection, or high voltage. Correct operation of the X-radiation protection circuits also must be reconfirmed each time they are serviced. (X-radiation protection circuits also may be called “horizontal disable”
or “hold-down.”) Read and apply the high voltage limits and, if the chassis is
so equipped, the X-radiation protection circuit specifications given on instrument labels and in the Product Safety & X-radiation Warning note on the
service data chassis schematic.
High voltage is maintained within specified limits by close-tolerance safetyrelated components/adjustments in the high-voltage circuit.
If high voltage exceeds specified limits, check each component specified on
the chassis schematic and take corrective action.
2. Read and comply with all caution and safety-related notes on or inside the
receiver cabinet, on the receiver chassis, or on the picture tube.
3. Design Alteration Warning- Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions, including,
but not limited to, circuit modifications and the addition of items such as
auxiliary audio and/or video output connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will void the manufacturer’s warranty and will make you,
the servicer responsible for personal injury or property damage resulting
therefrom.
4. Picture Tube Implosion Protection Warning-The picture tube in this
receiver employs integral implosion protection. For continued implosion protection, replace the picture tube only with one of the same type and number. Do not remove, install, or otherwise handle the picture tube in any
manner without first putting on shatterproof goggles equipped with side
shields. People not so equipped must be kept safely away while picture
tubes are handled. Keep the picture tube away from your body. Do not handle the picture tube by its neck. Some “in-line” picture tubes are equipped
with a permanently attached deflection yoke; because of potential hazard,
do not try to remove such “permanently attached” yokes from the picture
tube.
5. Hot Chassis Warning-a. Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord and may be safely
serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power
source. To confirm that the AC power plug is inserted correctly, with an AC
voltmeter measure between the chassis and a known earth ground. If a
voltage reading in excess of 1.0 V is obtained, remove and reinsert the AC
power plug in the opposite polarity and again measure the voltage potential
between the chassis and a known earth ground. b. Some TV receiver chassis normally have 85 V AC (RMS) between chassis and earth ground
regardless of the AC plug polarity. These chassis can be safely serviced
only with an isolation transformer inserted in the power line between the
receiver and the AC power source, for both personnel and test equipment
protection. c. Some TV receiver chassis have a secondary ground system
in addition to the main chassis ground. This secondary ground system is
isolated from the AC power line. The two ground systems are electrically
separated by insulating material that must not be defeated or altered.
6. Observe original lead dress. Take extra care to assure correct lead dress in
the following areas: a. near sharp edges, b. near thermally hot parts- be
sure that leads and components do not touch, c. the AC supply, d. high
voltage, and e. antenna wiring. Always inspect in all areas for pinched, outof-place, or frayed wiring. Do not change spacing between components,
and between components and the printed circuit board. Check the AC
power cord for damage.
7. Components, parts, and/or wiring that appear to have overheated or are
otherwise damaged should be replaced with components, parts, or wiring
that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove
any potential safety hazard.
8. PRODUCT SAFETY NOTICE
Some electrical and mechanical parts have special safety related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components
rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by shading, by a
*
, or by on schematics and
parts lists. Use of a substitute replacement that does not have the same
safety characteristics as the recommended replacement parts might create
shock, fire, and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.
AC Leakage Test
DEVICE
UNDER
TEST
TEST ALL
EXPOSED MET AL
SURFA CES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
LEAKAGE
CURRENT
TESTER
+ -
(READING SHOULD
NO T BE ABOVE
0.5mA)
EAR TH
GROUND
Servicing Precautions
- 4 -
CAUTION: Before servicing instruments covered by this service manual and
its supplements, read and follow the SAFETY PRECAUTIONS section of this
manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the
safety precautions. Remember: Safety First.
General Servicing Precautions
1. a. Always unplug the instrument AC power cord from the AC power source
before: (1) removing or reinstalling any component, circuit board, module,
or any other instrument assembly. (2) disconnecting or reconnecting any
instrument electrical plug or other electrical connections. (3) connecting a
test substitute in parallel with an electrolytic capacitor in the instrument.
Caution: Awrong part substitution or incorrect polar-ity installation of
electrolytic capacitors may result in an explosion hazard.
b. Do not defeat any plug/socket B+ voltage interlocks with which instru-
ments covered by this service manual might be equipped.
c. Do not apply AC power to this instrument and/or any of its electrical
assemblies unless all solid-state device heat sinks are correctly installed.
d. Always connect a test instrument’s ground lead to the instrument chassis
ground before connecting the test instrument positive lead.
Always remove the test instrument ground lead last.
Note: Refer to the Safety Precautions section of this manual.
2. The service precautions are indicated or printed on the cabinet, chassis, or
components. When servicing, follow the printed or indicated service precautions and service materials.
3. The components used in the unit have a specified flame resistance and
dielectric strength. When replacing any components, use components
which have the same ratings. Components identified by shading, by
*
, or
by in the circuit diagram are important for safety or for the characteristics
of the unit. Always replace with the exact replacement components.
4. An insulation tube or tape is sometimes used and some components are
raised above the printed wiring board for safety. The internal wiring is sometimes clamped to prevent contact with heating components. Install them as
they were.
5. After servicing, always check that the removed screws, components, and
wiring have been installed correctly and that the portion around the service
part have not been damaged. Further, check the insulation between the
blades of the attachment plug and accessible conductive parts.
INSULATION CHECKING PROCEDURE
Disconnect the attachment plug from the AC outlet and turn the power on.
Connect the insulation resistance meter (500 V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment
plug and accessible conductive parts (Note 1) should be more than 1 Mohm.
Note: Accessible conductive parts include metal panels, input terminals, earphone jacks, etc.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component
or semiconductor-equipped assembly, drain off any electrostatic charge on the body by touching a known earth ground.
Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for
potential shock reasons prior to applying power to the unit
under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder
ES devices.
4. Use only an anti-static solder removal device. Some solder
removal devices not classified as “anti-static” can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charge sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install
t.(Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or
comparable conductive material.)
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will
be installed.
Caution: Be sure no power is applied to the chassis or circuit,
and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replace
ment ES devices. (Otherwise, seemingly harmless motion,
such as the brushing together of your clothing or the lifting of
your foot from a carpeted floor, can generate static electricity
sufficient to damage an ES device.)
- 5 -
Description of Controls
Main Body
Main Body
ON/OFF
ON/OFF
ON/OFF Button
SOURCE MENU VOLENTER
MENU Button
SOURCE Button ENTERA / Button
/
VOL
F, G Button
Indicators
E, D Button
* Temperature indicator, lamp Indicator and operation indicator at the front of the monitor show the user the
operating status of the monitor.
Orange Standby.
Green(flashing) Lamp cooling untill the lamp turn on.
Operation Indicator
Lamp Indicator
Temperature Indicator
“ ”
is the warning message on screen.
Green On operation.(Turn on the lamp)
Orange(flashing) Monitor lamp is cooling as power out(1 minutes)
Off Power off.
Red to be replaced with a new lamp.(over 10000 hours)
Red(flashing)
Green(flashing) The lamp cover is not closed.
Red
Red(flashing) Power has turned off due to problem with the
Green(flashing) internal cooling fans. Contact your service center.
(for 25 seconds)(Refer to P.18)
Monitor lamp is reaching the end of its life and needs
“Replace the Lamp”
The monitor has trouble in the lamp or around it.
Contact the service center.
The monitor is turned off due to its high temperature.
Contact your service center.
- 6 -
Rear Connecting Part
Rear Connecting Part
RGB IN3(DVI-I)
(12V/0.5A)
RGB IN1 RGB IN2 RGB OUT
DC OUT
RGB IN3
(DVI-I)
VIDEOS-VIDEO
RS-232C
RS-232C
PONENT
COM-
YPBPR
RL
MOUSE
MIC
RGB IN1
RGB IN2
RGB OUT
MOUSE
RS-232C
RGB IN1 RGB IN2 RGB OUT
RGB IN3(DVI-I)
(12V/0.5A)
VIDEOS-VIDEO
RS-232CRGB IN3(DVI-I)
PONENT
MOUSE
MIC
DC OUT
COM
R L
MIC
DC OUT(12V/0.5A)
*Use this jack when
connecting the
wireless receiver to
the monitor.
S-VIDEO
VIDEO
YPBPR
COMPONENT
B, PR)
(Y, P
R, L
- 7 -
POWER
SOURCE
MENU
L
R
ZOOM
MUTE
LASER
Remote Control
MOUSE DRAG
VOL.
STILL
ARC
AUTO
AVL
DASP
APC
MIC
Remote Control
POWER Button
SOURCE Button
MENU Button
MOUSE DRAG
L MOUSE Button
(Zoom-out Button)
ENTERA Button
ZOOM Button
LASER Button
R MOUSE Button
(Zoom-in Button)
POINTER Button
MUTE Button
* Switches the sound
on or off.
Button
VOL. +, - Button
STILL Button
ARC Button
AUTO Button
AVLButton
DASP Button
APC Button
MIC Button
Button
Button
Function
Function
POWER Button Selects ON/OFF of power.
SOURCE Button Switches to RGB1/2/3, Video, S-Video, Component mode.
MENU Button Displays or hides the menu.
L MOUSE Button * Corresponds to the Left - Click of PC Mouse.
(Zoom-out Button) * Downsizes the screen on the zoom function.
R MOUSE Button * Corresponds to the Right - Click of PC Mouse.
(Zoom-in Button) * Enlarges the screen size on zoom function.
POINTER Button * After selecting menus, controls selecting and adjusting
functions with the direction of up, down, left, right.
* Moves the screen with the direction of up, down, left, right
on zoom function.
* Moves and releases the selected icon on PC screen.
MOUSE DRAG Button Uses to select and drag an icon in PC mode.
ENTERA Button Checks the present mode and sets the change of functions.
ZOOM Button Refer to page 34.
MUTE Button Cuts off audio.
VOL.(+, -) Button Adjusts volume level.
STILL Button
ARC Button
AUTO Button
AVL Button
DASP Button
APC Button
MIC Button
LASER Button Projects a bright red laser point on to the screen for indication
purposes.
(Don’t look at laser beam directly as it will cause eye
damage.)
- 8 -
Accessories
Accessories
POWER
MENU
SOURCE
L
R
ZOOM
MUTE
LASER
Remote Control
1.5V
1.5V
Batteries 2 (size AA)
Audio/Video Cable
DVI cable
Computer Cable
Mouse Connecting Cables
PS/2 Mouse Cable
(IBM PC or Compatible)
Optional Extras
* Contact your dealer for buying these items.
* Contact your dealer for replacing a new lamp.
S-Video Cable
Lamp
Operating guide
MAC Serial Mouse Cable
1. Application Object
This instruction is for the application to the LCD projection Monitor.
2. Notes
(1) The power source insulation of this LCD Projection TV is
not charging type and you may not use the transformer for
insulation. But you better adjust the set after operating it
with insulation transformer between power supply cable
and input part of the set for protecting the adjusting 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 if
there is no specific designation.
(4) The input voltage of the receiver must keep 220V, 60Hz in
adjusting.
(5) The set must be operated for 5 minuets preliminarily
before adjustment if there is no specific designation.
The preliminary operation must be performed after receiving 100% white pattern, but reception of the moving picture may also be possible in unavoidable case.
3. DRIVER Voltage Adjustment
All adjustment mode are entered by pressing the IN-START
key on the remote control, after adjustment press the ENTER
key to come out.
(1) Required Test Equipment
1) Output voltage measurement Jig : 1EA
2) PC Patteren generator : 1EA
3) Aremote control for adjustment
(2) Setting of Devices
(3) Preparation for Adjustment
1) Connect the PC pattern Generator with the RE-01JB set
as Fig.1
2) Adjust the PC pattern generator to XGA60Hz.
3) Press the INPUT SELECTION key(TV/AV) to select the
RGB1 input.
4) Install the Main Board of RE-01JB to the set JIG.
(4) Sequence of Adjustment (VREF&VMID)
1) Turn the set on.
2) Use the IN-START key on the R/C for adjustment to select
'Drive LCCOM Adjust' in adjustment menu.
3) Adjust voltage of VREF and VMID for each R,G,B. ( SEE a
Table below)
4) Press the ENTER key on the R/C for adjustment to store
the adjustment value when adjustment is finished.
4. EPLD Programming
(1) Required Test Equipment
1) Byteblaster
2) PC (or Notebook): 1EA
3) EPLD Program
(2) Sequence of Adjustment
1) Connect one port of Byteblaster to the Parallel Port and
connect another port of Byteblaster to P1201 of Sound
Board.
2) Turn the SET and PC on.
3) Operate an EPLD program of PC(or Notebook).
5. Signal adjustment of LCD control
5-1. LCCOM ADJUSTMENT
(1) Required Test Equipment
1) Pattern generator which can generate each R,G,B signal
of fined horizontal bar pattern.
2) Aremote control for adjustment : 1EA
(2) Sequence of Adjustment
1) Turn on the power supply of JIG for adjustment.
2) Adjust the PC pattern generator to XGA60Hz and fined
horizontal bar pattern and then connect to the SET.
3) Press the INPUT SELECTION key on the R/C to select
RGB.
4) Press IN-START key on the R/C for adjustment to enter
adjustmet mode.
5) Select LCCOM adjustment menu.
6) Use the VOLUME key to make the fewest screen FLICKER with watching screen. (Adjust individually after
inputting each RGB input signal.)
7) Press the ENTER key to come out of adjustment mode
when adjustment is finished.
5-2. NRS ADJUSTMENT
(1) Required Test Equipment
1) PC Pattern generator : 1EA
2) Aremote control for adjustment : 1EA
(2) Sequence of Adjustment
1) Turn the Power supply on.
2) Adjust the PC pattern generator to XGA60Hz and 16Gray
pattern and then connect the PC pattern generator to SET.
3) Press the INPUT SELECTION key on the R/C to select
RGB.
Adj.Value
The minimum value which is over 9.5V
7.0V
VREF
VMID
IC1808 PIn 14
IC1808 PIn1
- 9 -
Adjustment Instructions
R G B
(fig. 1) Voltage adjustment Set
MONITOR
Voltage
measurement
JIG
RGB
Board
SET JIG
PC Pattern
Generator
4) Press the IN-START key on the R/C for adjustment to
enter adjustment mode.
5) Select NRS adjustment menu.
6) Use the VOLUME key to make the fewest vertical lines on
the screen with watching screen.
7) Press the ENTER key to come out of adjustment mode
when adjustment is finished.
6. Factory Default&RGB Gain/Offset
Adjustment
(1) Required Test Equipment
1) Pattern generator : 1EA
2) Aremote control for adjustment : 1EA
(2) Sequence of Adjustment
1) Adjust the pattern generator to white/black window as Fig.
Below and connect to RGB1 Input terminal of the set.
2) Select RGB1 as Input signal.
3)Press the IN-START key on the R/C for adjustment to enter
adjustment mode and select Factory Default in adjustment
mode.
4) Press the ENTER key to operate Factory Default and enter
adjustment mode again and then select AutoGain in
adjustment menu.
5) Press the ENTER key to operate AutoGain and press the
Enter key to store AutoGain when adjustment is finished.
7. Screen Position Adjustment
(1) Required Test Equipment
1) Pattern generator : 1EA
2) Aremote control for adjustment : 1EA
(2) Sequence of Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 5 min and over before adjustment.
3) Input the farthest outer pattern signal into pattern genera-
tor except DTV signal (Hat or Hatch pattern which has the
farthest line) and connect to RGB1 and then select Input
signal of set to RGB1.
4) Press IN-START key on the remote control to enter the
adjustment mode.
5) Select POSITION CONTROL of adjustment menu and
then select the H POSITION in SUB Menu.
6) Adjust H-Position so that the farthest line is shown and to
be symmetrical on the end of right/left screen.
7) Select the V POSITION in Menu.
8) Adjust V POSITION so that the farthest line is shown and
to be symmetrical on the end of top/bottom screen.
9) When finishing the adjustment, get out of adjustment mode
by pressing ENTER button on Remote Control.
7. White Balance &Gamma Adjustment
(1) Required Test Equipments
1) Illuminometer (name of model : CA-100) : 1EA —>
Measure color of projecting screen center
2) Pattern Generator : 1EA —> 16 step Gray Pattern, 64 step
Gray Pattern
3) Aremote control for adjustment : 1EA
(2) Setting of Devices
7-1 Sequence of Gamma manually adjustment
1) Prepare the PC Pattern Generator which is possible to output R/G/B of 16 step and 64 step Gray Pattern.
2) Equipment composition : Follow Fig. 3.
3) Turn on the Jig for adjustment.
4) Select the RGB 1 by pressing the input select button on
Remote Control.
5) Output the 16 Gray Pattern in PC Pattern Generator.
Check it with the naked eye whether Screen Gamma and
W/B is right about each Gray.
If it’s not, press the IN-START button on Remote Control
and then adjust the level data of each step manually in
sub menu of Gamma RGB.
6) Output the 64 Gray Pattern in PC Pattern Generator.
Check it with the naked eye whether Screen Gamma and
W/B is right about each Gray or whether there is Gamma
noise.
If there’s any problem, press the IN-START button on
Remote Control and then adjust the level data of each
step manually in sub menu of Gamma RGB.
7) After finishing adjustment, exit adjustment mode by using
ENTER button on Remote Control.
7-2 Sequence of Gamma Auto Adjustment
1) Display the biggest WHITE PATTERN on screen and
change the 7050 R/G/B CONTRAST ( or 16th Gamma 1
R/G/B) data value of adjustment mode so that the white
balance of illumination system or illuminometer to be
x:283, y: 297(D9300K).
2) Measure the luminance value with changed data value in
clause 1.
3) Seek the luminance of each step so that each Gamma
value of 16 step to be 2.5 curve on a basis of luminance
value measured in clause 2. ( Maximum luminance *
(n1/16)** Maximum luminance : luminance measured
in clause 2)
N 1 : Each step unit (1.2.3.4,------15) when classify the signal level to 16 step.
4) Input the Gray pattern corresponding to the first luminance
and change the first adjustment mode R/G/B data value so
that the R/G/B data value to be same white balance with
1) above and luminance with 3) above.
- 10 -
PC Pattern
Generator
MW-60SZ12
- 11 -
5) Input the Gray pattern corresponding to the second luminance and change the second adjustment mode R/G/B
data value of Gamma adjustment item so that the R/G/B
data value to be same white balance with 1) and right to
the second luminance (measured in clause 3)
6) Input pattern signal with same method above and change
the Gamma R/G/B data value of corresponding level and
make same luminance with 3) and white balance with 1).
9. Uniformity Adjustment
(1) Required Test Equipments
1) Uniformity measurement equipment
2) ARemote Control for Adjustment
3) PC Pattern Generator : 1EA
(2) Setting of Devices
(3) Sequence of Adjustment
1) Adjust the screen coordinates as shown below.
2) Output the 17th VDP Test Pattern signal(7050 MAX 640) of
No. 4 sub adjustment item maximum adjustment.
Read the white coordinates and communicate 3 line with
ET7050 IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color uniformity of max point.
At this time, make sure that deviation is +5~-5% and standard is color coordinate of center.
3) Output the 16th VDP Test Pattern signal(7050 MID 570) of
No. 4 sub adjustment item(middle adjustment).
Read the white coordinates and communicate 3 line with
ET7050 IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color uniformity of mid point.
At this time, make sure that deviation is +5~-5% and standard is color coordinate of center.
4) Output the 15th VDP Test Pattern signal(7050 MIN 360) of
No. 4 sub adjustment item(min adjustment).
Read the white coordinate and communicate with ET7050
IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color unifor-
mity of miner point.
At this time, make sure that deviation is +5~-5% and standard is color coordinate of center.
5) White the miner, middle, maximum data for each point to
confront to each MICOM address.
10. Video Gain Adjustment
(1) Required Test Equipments
1) TV
2) ARemote Control for Adjustment
(2) Sequence of Adjustment
1) Press the INPUT SELECTION key on the R/C to select
VIDEO input.
2) Input the NTSC 13CH signal into Video input.
3) Set the set input to video (AV input).
4) Press the IN-START key on R/C for adjustment to select
'2101 Color Control1' in adjustment menu.
5) Raise the 2101 picture value to the maximum(63).
6) Use the 2101 subbright value and adjust upper 3 gradation
of Gray bar not to be distinguished.
7) Set the video channel to NTSC 6CH.
8) Press the IN-START key on R/C for adjustment again to
select '2101 Color Control1' in adjustment menu.
9) Raise the Driver G Gain to the maximum(63) and then
stop the Driver G Gain when the US 6CH is visible.
10) Make the Driver B value same with Driver G value and
make the Driver R value higher(2) than Driver G.
11) Press the ENTER key on R/C for adjustment to store the
adjustment value when the adjustment is finished.
0 1 2 3 ............xx..........15 16
1
.
yy
.
11
12
Adj.Jig
Camera
MW-60SZ12
PC Pattern
Generator
Adjust 3 gradations
not to be
distinguished.
Color Bar
Gray Bar
Adjust the these
letters not to
be saturated.
US 6CH
11. Component Gain Adjustment
(1) Required Test Equipments
1) Signal(DTV Signal 31-3)
2) SET-TOP box( or an equipment which can generate YPbPr
output receiving DTV signal)
3) ARemote Control for Adjustment
(2) Sequence of Adjustment
1) Press the TV/AV key on the R/C for adjustment to select
component input.
2) Input DTV signal 31-3 into component input.
3) Press the IN-START key on the R/C for adjustment to
select '2101 color control1' in menu.
4) Raise the 2101 picture value to the maximum.
5) Use the 2101 subbright value and adjust lower 2 gradation
of Gray bar not to be distinguished.
6) Press the IN-START key on R/C for adjustment again to
select '2101 color control2' in adjustment menu.
7) Use the Driver G Gain and adjust 2101 G Gain so that all
gradation(11gradation) of upper Gray bar are distinguished.
8) Make the Driver B value same with Driver G value and
make the Driver R value higher(2) than Driver G.
9) Press the ENTER key on R/C for adjustment to store the
adjustment value when the adjustment is finished.
12. EDID Data INput
(1) Required Test Equipments
1) AJIg for adjusting PC,DDC.(PC serial to D-sub.connection
equipment)
2) SW for writing DDC(EDID data write & read)
3) D-sub terminal
4) D-sub /DVI conversion connector
(2) Setting of Devices
(3) Preparation for Adjustment
1) Set devices as above and turn the PC,jig on.
2) Put the S/W for writing DDC(EDID datawrite&read)into
operation.(Operated in DOS mode.)
(4) Sequence of Adjustment
1) Turn the set on and set the input to RGB1 and then connect D-sub to RGB1 input terminal.
2) nput the product code, production week/year, serial number (if it is not input, write "01") to the S/W for writing DDC.
3) Select '60RPM_A' out of DDC file.
4) Operate the EDID write command and check the
60RPM_A is writed well through the Read command.
5) Connect the DVI conversion connector to D-sub and
RGB3(DVI) input terminal of set.
6) Set the Input selection to RGB3.
7) Select '60RPM_D' out of DDC file.
8) Operate the EDID Write command and check the
60RPM_D is writed well through the Read command.
- 12 -
Adjust 2101 G Gain
so that all lumination
are distinguished.
Adjust subbright
so that 2 lumination
are not to be
distinguished.
PC
JIG
1. Screen Tilt and Keystone cause of occurrence
When the whole engin is leaned, Tilt occur and Keystone occur because of changing TCL
when projection angle of engine is different or Mirror angle is different.
- 13 -
Correction of Screen Tilt & Keystone
TILT-Up and down operation necessity
of the whole engine
Rotation and side angle operation necessity
of the whole engine
KEYSTONE-TLC is
shorter than down
KEYSTONE-TLC is
shorter than down
Mirror angle
Engine projection angle
Comm
-onness
TILT KEYSTONE
2. New Mechanism for Adjustment
The axis of rotation of engine sets back and the whole engine enable left and right rotation, up and down, left and right angle
movement.
When turning adjustment Knob of left/right in front, engine will move.
When moving the engine base with left and right direction in front, engine will rotate.
- 14 -
Rota
-tion
Fixing Boss
Adjustment Knob
Adjustment Knob
Locking Knob
engine
engine
supporter
engine base
engine base For calculation : When
projection lens 0.2c leans,
Keystone occurs 5mm.
engine base
The axis of rotation
The axis of rotation
Side angle
Left/Right
angle
pole
3. Working Method and Improvement for Correction Mechanism of Tilt and Keystone
3.1 Working Method
(1) Put the 3t spacer on back of down parts of Mirror to correcting the Mirror angle of down parts
- To correct difference between Mirror angle of C/Aand JIG angle of lighting parts.
(2) Looking at the screen, push the engine base for left/right direction in front of engine. At this time,
check the screen Keystone condition.
(3) Adjust engine angle by turning the adjustment Knob on the down part.
(4) If Tilt and Keystone is [MAX-MIN] # 4mm, lock the locking Knob of left/right in front part and then fix
the fixing boss with screw.
3.2 Improvement
When turning left and right rotation, because an engine construction structure is tuched a construction
structure of cabinet, shield case will be correction. When turning adjustment Knob, operation is bad
because you cann’t input a hand to turning or adjustment Knob is tight.
Continously consult with the production department for improving adjustment operation. (A special
Driber for adjustment and so on)
- 15 -
3t spacer
engine base
engine
Fixing Boss
Adjustment Knob Adjustment Knob
* Connect your dealer or LG service center for replacing of new lamp.
You must replace the lamp when:
¯ The projector image get darker or start to be deteriorated.
¯ The lamp indicator is red(red, flashing alternately).
¯ The massage “LAMP REPLACE“ appears on the screen when turning the projec-
tor lamp on.
* Replace the lamp as below sequence
1. Turn off the projector and unplug the power cable.
(Cool the lamp for more than 1 hour.)
2. Remove the four retaing screws on the lamp cover with a screwdriver of “+“ type
and then lift off the lamp cover.
3. After lifting the lamp cover off, remove the two retaing screw on lamp case with
screwdriver of “-“ type. (refer to fig.2)
4. Lift up the fixed wire handle of the lamp. (refer to fig.3)
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 screw you removed in step 3.
8. Replace the lamp cover and tighten the cover screws.(Make sure the almp cover
is securely fastend. If lamp cover is open, the lamp indicator flashes green and
the projector is not turn on.)
* Resetting the lamp time
After pressing the “?“ key on the remote control in Stand-By mode, press the “9876“
and press the “OK“ button.
And then three LED in the front is stop after flashing for a moment.
* Lamp Life Time Confirmation
1. Method1 : Enter ADJ mode with using the remote control. You can be confirmed
because “ Lamp Life Time XX hr“ is appeared.
2. Method2 : With using the remote control offerd to consumer if you press the
menu button continuously, OSD menus will disappear then press the “9876“ and
press the “OK“ button to enter ADJ mode you can see “Lamp Life Time XX hr“
- 16 -
Replacing the Lamp
< Fig. 1>
< Fig. 2>
< Fig. 3>
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