LG RT-44/48/52SZ50LP User manual

LCD Projection TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MB-03CA
MODEL : RT-44/48/52SZ50LP
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

- 2 -
CONTENTS
CONTENTS ..................................................................................................................... 2
SAFETY PRECAUTIONS ................................................................................................3
SERVICING PRECAUTIONS .......................................................................................... 4
CONTROL DESCRIPTIONS ............................................................................................6
SPECIFICATIONS ..........................................................................................................10
ADJUSTMENT INSTRUCTIONS....................................................................................14
BLOCK DIAGRAM..........................................................................................................20
PRINTED CIRCIUT BOARD...........................................................................................25
EXPLODED VIEW ......................................................................................................... 34
EXPLODED VIEW PARTS LIST.....................................................................................35
REPLACEMENT PARTS LIST .......................................................................................36
SVC. SHEET ......................................................................................................................

- 3 -
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 circuitary that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver 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.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc.,
to be sure the set is safe to operate without damage of
electrical shock.
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 positioin, 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 esposed metallic part. Any
voltage measured must not exceed 0.75 volt RMS which is
corresponds to 0.5mA.
In case any measurement is out of the limits sepcified, 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

- 4 -
CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conflict between the
following servicing precautions and any of the safety
precautions on page 3 of this publication, always follow the
safety precautions. Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC
power source before;
a. Removing or reinstalling any component, circuit board
module or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug
or other electrical connection.
c.
Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect
polarity installation of electrolytic capacitors may result
in an explosion hazard.
d. Discharging the picture tube anode.
2. Test high voltage only by measuring it with an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Discharge the picture tube anode only by (a) first connecting
one end of an insulated clip lead to the degaussing or kine
aquadag grounding system shield at the point where the
picture tube socket ground lead is connected, and then (b)
touch the other end of the insulated clip lead to the picture
tube anode button, using an insulating handle to avoid
personal contact with high voltage.
4. Do not spray chemicals on or near this receiver or any of its
assemblies.
5. Unless specified otherwise in this service manual, clean
electrical contacts only by applying the following mixture to
the contacts with a pipe cleaner, cotton-tipped stick or
comparable nonabrasive applicator; 10% (by volume)
Acetone and 90% (by volume) isopropyl alcohol (90%-99%
strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication
of contacts in not required.
6. Do not defeat any plug/socket B+ voltage interlocks with
which receivers covered by this service manual might be
equipped.
7. 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.
8. Always connect the test receiver ground lead to the
receiver chassis ground before connecting the test receiver
positive lead.
Always remove the test receiver ground lead last.
9.
Use with this receiver only the test fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture ground strap to
any heatsink in this receiver.
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 fieldeffect
transistors and semicounductor "chip" components. The
following techniques should be used to help reduce the
incidence of component damage caused by static by static
electricity.
1. Immediately before handling any semiconductor component
or semiconductor-equipped assembly, drain off any
electostatic charge on your body by touching a known earth
ground. Alternatively, obtain and wear a commercially
available discharging wrist strap device, which should be
removed to prevent 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 type solder removal device. Some
solder removal devices not classified as "anti-static" can
generate electrical charges sufficent to demage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Do not remove a repalcement ES device from its protective
package until immediately before you are ready to install it.
(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 ieads 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
replacement ES devices. (Otherwise harmless motion such
as the bruching together of your clothes fabric or the lifting
of your foot from a carpeted floor can generate static
electricity sufficient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and
appropriate tip size and shape that will maintan tip
temperature within the range or 500¡£F to 600¡£F.
2. Use an appropriate gauge of RMA resin-core solder
composed of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thorohly clean the surfaces to be soldered. Use a mall
wirebristle (0.5 inch, or 1.25cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500¡£F to 600¡£F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static,
suction-type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the
circuiboard printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal
temperature (500¡£F to 600¡£F)
b. First, hold the soldering iron tip and solder the strand
against the component lead until the solder melts.
SERVICING PRECAUTIONS

- 5 -
c. Qulckly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it
there only until the solder flows onto and around both the
component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess
or splashed solder with a small wire-bristle brush.
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following
technique should be used to remove and replace the IC. When
working with boards using the familiar round hole, use the
standard technique as outlined in parapraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by
gently prying up on the lead with the soldering iron tip as the
solder melts.
2. Draw away the melted solder with an anti-static suction-
type solder removal device (or with solder braid) before
removing the IC.
Replacement
1. Carefully insert the replacement IC in the circuit boare.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as
close as possible to the component body.
2. Bend into a "U" shape the end of each of three leads
remaining on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the
corresponding leads extending from the circuit board and
crimp the "U" with long nose pliers to insure metal to metal
contact then solder each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heatsink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the
circuit board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heatsink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicula y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them
and if necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board
hollow stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board
to prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board.
The following guidelines and procedures should be followed
whenever this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper
pattern side of the circuit board. (Use this technique only on IC
connections).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely
necessary).
2. carefully scratch away the solder resist and acrylic coating
(if used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away
copper pattern and let it overlap the previously scraped end
of the good copper pattern. Solder the overlapped area and
clip off any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper
pattern at connections other than IC Pins. This technique
involoves the installation of a jumper wire on the component
side of the circuit board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a
hazardous condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the
pattern break and locate the nearest component that is
directly connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of
the nearest component on one side of the pattern break to
the lead of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so
the it does not touch components or sharp edges.

- 6 -
CONTROL DESCRIPTIONS
All the functions can be controlled with the remote control handset.
Some functions can also be adjusted with the buttons on the front
panel of the set.
Remote control handset
Before you use the remote control handset, please install the bat-
teries. See the next page.
1. POWER
switches the set on from standby or off to standby.
2. MULTIMEDIA
selects Component 1/2, RGB-DTV or RGB-PC modes.
3. LIST
displays the program table.
4. MUTE
switches the sound on or off.
5. SWAP
returns to the previously viewed program.
6. MENU
selects a menu.
7. D/E(Program Up/Down)
selects a program or a menu item.
switches the set on from standby.
F/G(Volume Up/Down)
adjusts the volume.
adjusts menu settings.
OK
accepts your selection or displays the current mode.
8. NUMBER BUTTONS
switches the set on from standby or directly select a number.
9. PSM (Picture Status Memory)
recalls your preferred picture setting.
10. SLEEP
sets the sleep timer.
11. VCR BUTTONS
control a LG video cassette recorder.
123
456
7
PSM SSM
8
0
SLEEP
STILL
SIZE
I/II
STOP REC
P/STILL
REW FF
PLAY
9
POWER
MULTIMEDIA TV/AV
LIST ARC
MUTE PIP
PR - PR +
INPUTSWAP
MENU PR
VOL OK VOL
PR
CANCEL/EXIT
POSITION
1
2
3
4
5
6
9
10
11
8
7

- 7 -
12. TV/AV
selects the remote operating mode.
switches the set on from standby.
13. ARC (Aspect Ratio Control)
changes the picture format.
14. PIP BUTTONS
PIP
switches the sub picture on or off.
PR +/ -
selects a program for the sub picture.
SWAP
alternates between main and sub picture.
INPUT
selects the input mode for the sub picture.
SIZE
adjusts the sub picture size.
STILL
freezes motion of the sub picture.
POSITION
relocates the sub picture in clockwise direction.
15. CANCEL/EXIT
Clears all on-screen displays and returns to TV viewing from any
menu.
16. SSM (Sound Status Memory)
recalls your preferred sound setting.
17. STILL
freezes motion of the picture.
18. I/II
selects the language during dual language broadcast.
selects the sound output.
1 2 3
4 5 6
7
PSM SSM
8
0
SLEEP
STILL
SIZE
I/II
STOP REC
P/STILL
REW FF
PLAY
9
POWER
MULTIMEDIA TV/AV
LIST ARC
MUTE PIP
PR - PR +
INPUTSWAP
MENU PR
VOL OK VOL
PR
CANCEL/EXIT
POSITION
12
13
14
15
16
17
18

- 8 -
1. MAIN POWER (ON/OFF)
switches the set on or off.
2. TV/AV
selects the remote operating mode.
switches the set on from standby.
3. MENU
selects a menu.
4. OK
accepts your selection or displays the current
mode.
5. FF/GG(Volume Down/Up)
adjusts the volume.
adjusts menu settings.
6. DD/EE(Program Up/Down)
selects a program or a menu item.
switches the set on from standby.
7. OPERATION INDICATOR (Refer to p.7)
8. LAMP INDICATOR (Refer to p.7)
9. TEMPERATURE INDICATOR (Refer to p.7)
10. REMOTE CONTROL SENSOR
Note :
a. Shown is a simplified representation of front
or side panel. Here shown may be somewhat
different from your set.
b. There might be a faint white trace on the cen-
ter of the screen according to the position.
This is normal and is a characteristic of the
screen.
Front panel
TV/AV MENU OK VOL PR
2 3 4 5 6 7 8 9 1
Lamp indicator, operation indicator, and temperature indicator, located below the front panel con-
trols reveal the operating status of the set.
10

- 9 -
S-VIDEO
VIDEO
AUDIO
(R)
(L)/
MONO
AV3
P
O
R
T
U
P
G
R
A
D
E
P R
P B
Y
DTV/DVD INPUT
RGB
(XGA/
576p/
480p/
720p/
1080i)
(L)
AUDIO
(R)
V
A
U
D
I
O
O
U
T
A
A
B
L
E
R
I
(L)
AUDIO
(R)
MONO
A/V 1
INPUT
A/V 2
INPUT
MONITOR
OUT
(L)
AUDIO
(R)
(L)
AUDIO
(R)
AUDIO
CENTER
MODE IN
PC/DTV INPUT
COMPONENT
INPUT 1
576i/480i
576p/480p
720p/
1080i
576i/480i
576p/480p
720p/
1080i
COMPONENT
INPUT 2
S-VIDEO
75Ω
L L
ANT IN
P
O
R
T
U
P
G
R
A
D
E
P R
P B
Y
DTV/DVDINPUT
RGB
(XGA/
576p/
480p/
720p/
1080i)
(L)
AUDIO
(R)
V
A
U
D
I
O
O
U
T
A
A
B
L
E
R
I
(L)
AUDIO
(R)
MONO
A/V1
INPUT
A/V2
INPUT
MONITOR
OUT
(L)
AUDIO
(R)
(L)
AUDIO
(R)
AUDIO
CENTER
MODEIN
PC/DTVINPUT
COMPONENT
INPUT1
576i/480i
576p/480p
720p/
1080i
576i/480i
576p/480p
720p/
1080i
COMPONENT
INPUT2
S-VIDEO
75Ω
L L
ANTIN
Rear panel
AERIAL SOCKET
UPGRADE PORT
This port is used to
upgrade the software
version and debug
without changing the
hardware.
Be careful not to use
this port. Just contact
your dealer or service
centre.
DTV/DVD INPUT
SOCKETS
PC/DTV INPUT
SOCKETS
CENTER SPEAKER
MODE IN SOCKETS
AV1/2 / MONITOR
OUT(AUDIO/VIDEO),
S-VIDEO INPUT
SOCKETS
VARIABLE AUDIO
OUT SOCKETS
S-VIDEO INPUT
SOCKET
AV3 INPUT SOCKET
Off Power cord is not connected.
Red Power Cord is connected, unit is on standby.
Green On
Orange (flashing) Preparing operation in standby.
Orange Projection lamp is reaching the end of its life and
needs to be replaced with a new lamp.
Red (flashing) Lamp on Error
Green (flashing) The lamp cover is not closed.
Orange The set is overheating.
Red The set has shut down due to overheating.
Red (flashing) The set has shut down, check the cooling fan.
Operation Indicator
Lamp Indicator
Temperature Indicator
•Status Indicators

SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement .
VScope
This specification can be applied to the LCD Projection(RT-44SZ50LP/ RT-48SZ50LP/ RT-52SZ50LP)
VTest and Inspection Method
1) performance:Follow the Standard of LG TV test
2) Standards of Extra requirement
Safety: Follow the standard of CB
EMC : Follow the standard of CE
VTest Condition
1) Temperature :25¡5°C
2) Relative Humidity:65¡10%
3) PowerVoltage:Standard input voltage(AC 240V¡10%, 50/60Hz)
But Standard input voltage mark value is marked by model.
4) Use the parts only designated in B.O.M.,PARTS SPEC.,or drawings.
5) Follow each drawing or spec for spec and performance of parts,based upon P/N of B.O.M
6) Warm up TV set for more than 30min. before the measurement.
Specification
PAL – B/G, D/K, I
SECAM B/G, D/K
NTSC - M, 4.43
VHF/ UHF : CH1 ~ CH56
CATV : S1~ S41
AC 110~ 240V, 50H/60Hz
China
44,48,52 inch
16:9 (wide)
0
-20
- 10 -
VGeneral Specification
1
2
3
4
5
6
7
8
9
10
Only AV input signal
for NTSC - 4.43
Video input applicable
system
Available Channel
Input Voltage
Market
Screen size
Aspet ratio
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
Min Typ Max Unit
No Item Remark
deg
%
deg
%
40
85
60
85

VFeature and Function
- 11 -
No
D-Sub 15 Pin
L/R
RS-232C
On-this function operates
when only comp 480i input.
Off-no function
Tint (NTSC only)
On: Auto Boost operation
Item Specification Remark
LG Code
1 Separate
1 L/R
1
2 L/R
2 Y, PB, PR
3 (1 Side / 2Rear)
2 (1 Side / 1Rear)
1 1Rear
1
1
Power, Menu, Ok, Volume (F,G)
Channel (D, E)
Dynamic/ Standard/ Mild/ Game
On/ Off (3:2 pull down mode)
Contrast/ Brightness/ Colour/ Sharpness/ Tint
HDTV & PC : 16:9/ 4:3
SDTV&CVBS : 4:3/ 16:9/ Zoom/ Auto
Dolby Virtual/ Flat/ Music/ Movie/ Speech
A2 : B/ G, D/ K, NICAM : B/ G, D/ K, I
O
O
X
Sleep Timer/ Auto Sleep
English/ Chinese
On/ Off
At Room Temperature
At -10 °C
1
2
3
4
5
6
7
8
Power ON/OFF operation
Staring Voltage (AC INPUT)
Staring Voltage (AC INPUT)
DC Voltage, Ballast
DC Voltage, Audio AMP
DC Voltage, 3.3V, stand-by
DC Voltage, Analog 3.3V
DC Voltage, Analog 2.5V
10000
-20
-15
360
28
3.15
3.15
2.438
380
32
3.3
3.3
2.5
400
36
3.45
3.45
2.600
times
%
%
V
V
V
V
V
No Item Specification
Min Typ Max Unit Remark
VPower
Min Typ Max Unit
REMOCON
RGB Input
RGB Audio (L, R) Input
Center Speaker Mode Input
Component Audio (R, L) Input
Component Input
AV Input
S-Video Input
Monitor out
Variable Audio out
Serial Port
Local key
Picture, Status Memory(PSM)
Cinema
Picture, User Control
Display mode
Sound, Status Memory(SSM)
Sound Stereo/ Dual
PIP/ POP Mode
SSC (Split Screen) Mode
Teletext
Timer
OSD Language
Auto Boost
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

- 12 -
9
10
11
12
13
14
15
DC Voltage, Digital, 5V
DC Voltage, Tuning voltage
DC Voltage, LCD Driver, 5V
DC Voltage, LCD Driver, 17.5V
DC Voltage 3.3, SUB MICOM
DC Voltage 2.5V, SUB MICOM
DC Voltage, FAN
4.875
29
4.5
17
3.15
2.438
11.5
5
31
5
17.5
3.3
2.5
12
5.125
33
5.5
18
3.45
2.600
12.5
V
V
V
V
V
V
V
No Item Specification
Min Typ Max Unit Remark
75 ohm
75 ohm
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Video Input Level
Video Input Frequency Response
Video output S/N
S-Video Input Level (Y)
S-Video Input Level (C-Burst)
Component Video Input Level
(Y, CB/ PB, CR/ PR)
R/G/B Video Input Level
Audio Input S/N
Audio Input Distortion
Audio Input Dynamic Range
Audio Input Level
Audio Input Frequencyl Response
0.85
3
40
0.85
0.256
0.6
0.6
40
2
0.47
0.05
1
1
0.286
0.7
0.7
0.63
1.15
1.15
0.316
0.8
0.8
2
0.79
10
Vpp
MHz
dB
Vpp
Vpp
Vpp
Vpp
dB
%
V
Vrms
kHz
No Item Specification
Min Typ Max Unit Remark
VExternal Interface
SDTV, DVD 480I
SDTV, DVD 480I
EDTV 480P
SDTV, DVD 576I
EDRV 576P
HDTV 720P (60Hz)
HDTV 720P (50Hz)
HDTV 1080I (60Hz)
HDTV 1080I (50Hz)
1.
2.
3.
4.
5.
6.
7.
8.
9.
640x480
640x480
704x480
720x576
720x576
1280x720
1280x720
1920x1080
1920x1080
15.75
15.73
31.47
15.625
31.250
45.00
37.50
33.75
28.125
60
59.94
59.94
50
50
60.00
50
60.00
50
No
VComponent Video Input (Y, PB, PR)
Proposed
Specification
Resolution H-freq(kHz) V-freq(Hz) Pixel clock

- 13 -
0 : Standard
1 : Non-Standard (Southeast Asia,Central America)
0 : Support FLOP
1 : Support All (FLOP + TOP)
0 : Do not save DUAL When converting Channel
1 : Save DUAL when Converting Channel
0 : OSRAM
1 : PHILIPS
0 : Not Ready to Over-Modulation in DK Mono
1 : Ready to Over-Modulation in DK Mono
0 : BG / I /D
1 : BG / L
2 : BG / I DK / M
0 : ENG + CHINA
1 : English
0 : West EU
1 : East EU 1
2 : East EU 2
3 : Turkey EU
4 : Cyrillic 1
5 : Cyrillic 2
6 : Cyrillic 3
7 : Turk GRE 1
8 : Turk GRE 2
9 : Turk GRE 3
10 : Arab FRA
11 : Arab ENG
12 : Arab HEB 1
13 : Arab HEB 2
14 : FARS ENG
15 : FARS FRA
16 : FARS All
1
2
3
4
5
6
7
8
Volume Curve
Text Top
I_II SVC
Lamp_Type
C_Mute
system
Osd Language
Text Language
0
1
1
1
1
2
0
0
No Item Specification
Min Typ Max Unit Remark
VOption

- 14 -
1. Application Object
This instruction is for the application to the LCD Projection
2. Notes
(1) The power source insulation of this LCD Projection is not
charging type and you may not use the transformer for
insulation. But you’d better adjust the set after operating it
with insulation transformer between power supply cable
and input part of the set for protecting the adjusting
equipments.
(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 240V, 50Hz in
adjusting.
(5) The set must be operated for 5 minutes 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. Composition of Adjustment Mode
(1) All adjustment mode are entered by pressing the ADJ key
on the remore control,after adjustment pess the ADJ key to
come out.
(2) Below picture is screen composition when press the first
ADJ key.
(3) Select menu to adjust with using (CH+(D),CH-(E)) key
above screen and press Volume+(G)key to adjust on the
wanting menu.
(4) Adjust the value of adjustment with using the volume
+(F),volume -(G) key.
(5) Press the ADJ key to come out after adjustment.
(6) ex.) Composition of each adjustment mode.
1). RGB Alignment:This is the sub adjustment item by
selected Adjust key.
2) F, G(Vol +/ -): This is the key to change the data.
3) D, E (CH +/ -):This is the key to change the sub menu.
4. LCD adjustment
4-1. NRS adjustment
[When the LCD pannel load data on regular pixel using high
speed charge/ discharge with sample & holder, the drain width
of TFT gradually dicreases and the non-resistance increases,
and comes out regular noise on screen (shows vertical line by
12 pixel]
(1) Required Test Equipments
1) PC Pattern generator; 16 Gray Pattern
2) Fixation stand
3) Remote control for adjustment
4) Circuit thing Jig for adjustment (Except Driver Board Assy)
(2) Equipment composition : Refer to <Fig 2>
(3) Preparation for Adjustment
1) Connect PC PATTERN GENERATOR to JIG SET as
shown <Fig 2>.(Except drive part of a circuit block)
2) Select 16 Gray pattern of PC PATTERN GENERATOR
(4) Adjustment Sequence
1) Turn on power supply in the JIG for adjustment.
2) Press the INPUT key to select RGB_PC mode.
3) Press the ADJ key on remote control for adjustment to
enter the adjustment mode.
4) Select the ‘62352’ and press the G key. Then select 6.
RNRSH, 9.GNRSH, 11.BNRSH of ADJUST MODE to
adjust.
5) Let’s decrease vertical line Noise by using Volume button.
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, get out of adjustment mode
by pressing Adjust key.
4-2. VCOM ADJUSTMENT
(1) Required Test Equipments
1) PC PATTERN GENERATOR ; Pattern Generator which
can generator each R, G, B signal and can observe the
FLICKER best (ex : me Character Pattern)
2) <Fig.2> Equipment composition
3) Remote control
4) Circuit thing Jig for Adjustment (Except Driver Board Assy
of adjustment model)
(2) Equipment Composition
RT52SZ50LP [V*.*]
RGB Alignment
62352
Uniformity Adj
Gamma Adjust
AD9883 Adjust
Sub Micom Ver. **
Main Micom Ver. **
RGB Alignment
9.DXOUTB D
10.H_positon F0 G
E
ADJUSTMENT INSTRUCTIONS
<The first screen of adjustment mode>
Adjustment Jig
Screen
PC Pattern
Generator
Optical measuring equipment
Optical box Circuit for
Adjustment
Set stand PC
<Fig 1.Adjustment of circuit>

(3)Preparation for Adjustment
1) Connect the PC PATTERN GENERATOR, circuit for
adjustment and adjustment JIG as shown <Fig 2>.
2) Adjust output pattern of PC PATTERN GENERATOR to
possible display and then turn on the power.
(4) Adjustment Sequence
1) Turn on the adjustment Jig
2) Select RGB_PC by pressing input Select Key on Remote
control.
3) Enter to adjustment mode by pressing Adjust key on
Remote control.
4) Select the ‘62352’, then ready to adjust 4. RVCOM, 7.
GVCOM, 10.BVCOM
5) Let’s decrease flicker by using Volume key
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, get out of adjustment mode
by pressing Adjust key.
5. CPLD Download Work
(1) Required Test Equipments & Preparation for Adjustment
1) Connect the PC and memory JIG as shown <fig3>.
2) Turn on JIG MAIN POWER SW.
3) After turn on the PC and moniter, operate the device
programming.
(2) Adjustment Sequence
1) After program running, displayed [OPTION MODE
SELECTION] window.
Check the “Load configuration File(.cdf, .pdr)” in this
window and click the finish button
2) When the screen displays the open window, select the
suitable file(*.cdf) according to model.
3) IC figure is change to green by clicking it.4) Select the
program of operations.
5) Check the [Erase before programming] and [Verify] menu
as shown <Fig4> and press the OK button.
6) At this time, the download starts. The download finished
after 10 seconds.
6. Component Offset Adjustment
(1) Required Test Equipments :
A remote control for adjustment, 801GF or 802F
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV set on.
2) Do Heat-Run for 5 minutes and over before adjustment.
3) Receive the Component 1 or 2.
4) Receive the 720P/60Hz, HozTVBar Pattern of 801GF
- 15 -
<Fig 4. Program Options>
<Fig 3.How to connect the MEMORY JIG and PC>
Optical measuring equipment
TV
Set
Connector for
Adjustment RS-232C
Cable
PC
PC Pattern
Generator
Adjustment
Jig
<Fig 2.TV set status Adjustment>
<Fig 7 720P HozTVBar Pattern>

(3) Offset Adjustment
1) Press Adjust key on the remote control to enter the
adjustment mode after more than 10 seconds of receiving
the signals.
2) Press “4.AD9883 Adjust” to adjust.
3) When the OSD of “AD9883 Adjust End” appeared and
disappears,The adjustment is completed
(4) Component & RGB Mode White Balance passivity
adjustment
1) After inputting the 16 Gray pattern (RGB or Component),
check the White Balance status of Low Level (2-6 Gray
Level).
2) After Pressing the IN-START key of remote control, select
the AD9883 and press the G key. - Red Offset, Blue Offset
is able to adjust.
3) After selecting the adjustment mode with the channel key,
adjust Red Offset, Blue Offset value with the volume key to
adjust passively white Balance in Low Level.
adjustment limite : Red Offset - +/-2 step
Blue Offset - +/-4step
7. Screen Tilt & Keystone Adjustment
(1) Required Test Equipments
1) Six angles wrench and spanner for knob adjustment or
fixation
2) Remote control
(2) Preparation for Adjustment
1) Do not assemble the front pannel equipment so that you
can adjust the adjustment knob of <Fig 5>
2) Turn on TV and press EYE key on remote control.
3) 11th screen - Select the pattern of small white squares,
diagonal and a big red square.
(3) Adjustment Sequence
1) Stick the Engine of <Fig 5> to the knob poll for adjustment
and check the key stone & tilt watching TV screen.
2) Rotate left/right adjustment knob bellow and adjust engine
angle.
3) Adjust the adjustment knob of both sides so that the tilt and
keystone are to be under the spec.(The gap between max
and min : under 4mm)
4) After adjusting like 3), fix the engine with the screw for
fixation.(2EA. adjustment knob and engine fixing screw)
8. H/V Position Adjustment
(1) Required Test Equipments
A remote control of adjustment
(2) Preparation for Adjustment
1) Connect the power source with TV Set and turn TVset on
2) Do Heat Run for 5 minutes and over before adjustment.
(3) Horizontal/ Vertical Position Adjustment
1) Press EYE key on the R/C to select the pattern that has
11th white small square/ diagonal, and the red big square.
2) Horizontal position Adjustment : Adjust data with using the
F/Gkey on the remote control in order to be left/ right
semmetry screen.
3) Vertical position Adjustment : Adjust data with using the
F/Gkey on the remote control in order to be upper/down
semmetry screen.
4) Press the EYE key on remote control to get ut of EYE
pattern.
(4) Check of position ajustmet
: After adjusting, check the upper/ down, left/ riglt patten.
9. White Balance & Gamma Adjustment
(1) Required Test Equipments
1) CA100 : 1EA
-> Measure colour of projecting screen center
[CA-110(name of model) is possible to measure White
Balance and Gamma - leave it 20Cm from screen center
Follow a measurement machine manual to set CA-100and
CA-110 measurement machine.]
2) pattern Generator : 1EA -> 16 step Gray Pattern, 64 step
Gray Pattern
3) SET Fixation Stand : 1EA
4) Remote control : 1EA
5) Circuit thing Jig for adjustment (Except Drive Board Assy of
adjustment model)
--- Programmed Digital Board so that the VDP Test Pattern
can output white signal by 1 level from 0 to 255 level.
(2) Equipment composition : Follow <Fig 2>
Adjust at same condition of equipment composition diagram.
(3) Preparation for Adjustment
Compose the equipment follow Fig.2 and place the set on the
fixation stand.
- 16 -
<Fig 6> H/V screen for Position adjustment
<Fig 5>

- 17 -
1) Select the VDP Test Pattern signal to R1, G1, B1.
2) Press the Adjust key to select 62352 and then select
RVREF, GVREF, BVREF in adjust mode
3) Adjust the luminance of CA100 to be below 0.75Cd by
volume key.(Range : 196~ 202)
4) Exit adjustment mode by pressing Adjust key.
5) Press the IN-START key on the remote control and select
the 7050 RGB Set of adjustment mode and then press the
Gkey.
6) Check the data value of Rcontast, Gcontrast, Bcontrast is
515, Otherwise set the data 515 by using volume key.
(4) Adjustment Sequence
1) Output 255,255,255 signal of VDP TEST PATTERN, then
display maximum WHITE PATTERN on screen.
2) Gamma Adjust Mode is display as below when select
Gamma adjust by pressing ADJ key on remote control.
*First column : R adjustment
data display
*Second column : G adjustment
data display
*Third column : B adjustment
data display
3) Change the 16 Step RGB data to select white balance
x:283, y:297(D9300K).[48inch - X:269, Y:294;11000K]
4) Measure the luminace with chanded data.
5) Set the every Gamma data of 16 step to 2.2 on the basis of
measured luminance data in 3)clause. (Max lumenance
*(n1/16)**2.2)
--- Max luminance : measured luminance data n1 : every
step unit when separating signal level to 16 step
6) Output the 240, 240, 240 (15th data in max white output
signal level) in the VDP Test Pattern, change the 15th RGB
data value to come out white valance x=283,
y=297(D9300K) and measured step luminance in 5)clause.
7) Output the 224, 224, 224 (14th data in max white output
signal level) in the VDP Test Pattern, change the 14th RGB
data value to come out white valance x=283, y=297 and
measured step luminance in 5)clause.
8) As shown above, output the VDP Test Pattern signal
(208/192/176/160/144/128/112/96/80/64/48/32/16) and
change the RGB data value of each step to come out white
balance x=283, y=294 and measured luminance in
3)clause.
10. White Uniformity Adjustment
(1) Required Test Equipments
1) Uniformity measuring equipment : Equipment which can
measure chromatiity in the whole screen
2) Set stand : 1EA
3) Remote controller for adjustment : 1EA
4) Circuit thing Jig for Adjustment (Except Driver Board Assy
of adjustment model)
--- Programmed Digital Board so that the VDP Test Pattern
can output white signal by 1level form 0 to 255 level.
(2) Equipment composition
Compose the equipment as Fig.2
(3) Preparation for Adjustment
1) Composite the equipment as shown Fig.2, and place the
set on fixation stand.
2) After inputting company channel 13, adjust colour uniformity
like Horizontal/ Vertical position adjustment of input signal
part adjustment by using remote control for adjustment.
3) After pressing IN_START key on remote control for
adjustment, select the adjustment mode 7050 Uniformity.
<Resister Explanation about uniformity adjustment>
1. RamCtrl : s/w saving uniformity write order (Do not adjust)
2. CSHP : Horizontal start point designation --- adjustable
3. CSVP : Vertical start point designation --- adjustable
4. CEHP : Horizontal END point designation --- adjustable
5. CEVP : Vertical END point 6.designation --- adjustable
6. Mode : uniformity mode select --- adjustable if need
*** 0 : 221point & 3level ---- defalut value
*** 1 : 221point & 4level
*** 2 : 825point & 3level
*** 3 : 825point & 4level
7. KHH : Upper 2byte of horizontal line correction coefficient --
Change according to CSHP, CEHP value.
8. KHL : Upper 2byte of vertical line correction coefficient --
Change according to CSHP, CEHP value.
** How to calculate KHH, KHL value
LCD panel size = 1280 x 720
Correction Point = 221 point
--> 17 horizontal points x 13 vertical points
(16 horizontal segments x 12 vertical poins)
O H Coefficient(KHH, KHL)
--> Calculation method (CEHP-CSHP=1280, Horizontal
segment value =16)
9. KVH : Upper 2byte of vertical line correction coefficient
-- Change according to CSVP, CEVP value.
10. KVL : Upper 2byte of vertical line correction coefficient
-- Change according to CSVP, CEVP value.
OV Coefficient(KVH, KVL)
Calculation method (CEVP-CSVP=720, Vertical segment
value =12)
11. RL1H : Upper 9bit of MID2 brightness correction
coefficient in R MIN.
--- Change according to RMIN and RMID2 value.
12. RL1L : Lower 9bit of MID2 brightness correction coefficient
in R MIN.
--- Change according to RMIN and RMID2 value.
13. RL2H : Upper 9bit of MID1 brightness correction
coefficient in R MID2.
--- Change according to RMID2 and RMID1 value.
H coefficient = 1/(number of pixel intervals between setting in the horizontal
direction)
Hcoeff = 1/((1280/16)-1) = 0.012658227
hex (0.012658227 x 216) = 0 x 033D, Hcoeff (hex) = 0 x 033D + 1 = 0 x 33E
V coefficient = 1/(number of pixel intervals between setting in the vertical
direction)
Vcoeff = 1/((720/12)-1) = 0.016949152
hex (0.016949152 x 216) = 0 x 0456, Vcoeff (hex) = 0 x 0456 + 1 = 0 x 0457
Gamma Adjust
R:1 G:2 B:3
80 100 100
234 216 216
453 411 387
--------------------------
--------------------------
724 690 780

14. RL2L : Lower 9bit of MID1 brightness correction
coefficient in R MID2.
--- Change according to RMID2 and RMID1 value.
15. RL3H : Upper 9bit of MAX brightness correction coefficient
in R MID1.
--- Change according to RMID1 and RMAX value.
(use it while adjusting 4 coefficient)
16. RL3L : Lower 9bit of MAX brightness correction coefficient
in R MID1.
--- Change according to RMID1 and RMAX value.
(use it while adjusting 4 coefficient)
<L Coefficient Calculation Method>
Using 3coefficient Level
Assume that the value of R/G/B MIN, MID2,MID1 is 192, 448,
704.
R/G/B MIN = 192
R/G/B MID2 = 448
R/G/B MID1 = 704
OL Coefficient(RL1H~BL3L)
- Calculation method (L1)
- calcuate L2, L3 same with L1
17. GL1H : Upper 9bit of MID2 brightness correction
coefficient in G MIN.
--- Change according to GMIN and GMID2 value.
18. GL1L : Lower 9bit of MID2 brightness correction
coefficient in G MIN.
--- Change according to GMIN and GMID2 value.
19. GL2H : Upper 9bit of MID1 brightness correction
coefficient in G MID2.
--- Change according to GMID2 and GMID1 value.
20. GL2L : Lower 9bit of MID1 brightness correction
coefficient in G MID2.
--- Change according to GMID2 and GMID1 value.
21. GL3H : Upper 9bit of MAX brightness correction
coefficient in G MID1.
--- Change according to GMID1 and GMAX value.
(use it while adjusting 4 coefficient)
22. GL3L : Lower 9bit of MAX brightness correction coefficient
in G MID1.
--- Change according to GMID1 and GMAX value.
(use it while adjusting 4 coefficient)
23. BL1H : Upper 9bit of MID2 brightness correction
coefficient in B MIN.
--- Change according to BMIN and BMID2 value.
24. BL1L : Lower 9bit of MID2 brightness correction coefficient
in B MIN.
--- Change according to BMIN and BMID2 value.
25. BL2H : Upper 9bit of MID1 brightness correction
coefficient in B MID2.
--- Change according to BMID2 and BMID1 value.
26. BL2L : Lower 9bit of MID1 brightness correction coefficient
in B MID2.
--- Change according to BMID2 and BMID1 value.
27. BL3H : Upper 9bit of MAX brightness correction coefficient
in B MID1.
--- Change according to BMID1 and BMAX value.
(use it while adjusting 4 coefficient)
28. BL3L : Lower 9bit of MAX brightness correction coefficient
in B MID1.
--- Change according to BMID1 and BMAX value.
(use it while adjusting 4 coefficient)
29. RLMIN : Setting up the MINIUM Level of R --- Set under
200
30. RLMID2 : Setting up the MIDDLE 2nd Level of R ---Middle
level when 3coefficient
31. RLMID1 : Setting up the MIDDLE 1st Level of R --- Max
level when 3coefficient
32. RLMAX : Setting up the MAX Level of R
33. GLMIN : Setting up the MINIUM Level of G --- Set under
200
34. GLMID2 : Setting up the MIDDLE 2nd Level of G ---Middle
level when 3coefficient
35. GLMID1 : Setting up the MIDDLE 1st Level of G --- Max
level when 3coefficient
36. GLMAX : Setting up the MAX Level of G
37. BLMIN : Setting up the MINIUM Level of B --- Set under
200
38. BLMID2 : Setting up the MIDDLE 2nd Level of B --- Middle
level when 3coefficient
39. BLMID1 : Setting up the MIDDLE 1st Level of B --- Max
level when 3coefficient
40. BLMAX : Setting up the MAX Level of B
41. HVSCAN : Setting up the scan direction while adjusting
unifomity - Do not adjust
42. TestMode : uniformity adjustment test - Do not adjust
(4) Adjustment Sequence
1) Adjust the screen coordinates as shown below.
2) Output the VDP TEST PATTERN signal correspond to the
Max value.
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 VDP TEST PATTERN signal correspond to the
MID value.
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.
- 18 -
L2 coefficient =1/(brightness level(MID1) - brightness level(MID2)
L3 coefficient = 1/(brightness level(MAX) - brightness level(MID1)
: case of 4 brightness Level
0 1 2 3 ............xx..........15 16
1
.
yy
.
11
12
<Screen division diagram for uniformity adjustment>
L1 coefficient = 1/(brightness level(MID2) - brightness level(MIN))
L1 coeff = 1/(448 - 192) = 1 / 256 =0.00390625
L1 coeff(hex) =hex(0.00393625 x 218) =0 x 0400
-> L1H(high 9bit) = b’000000010 L1L(low 9bit) = b’000000000

4) Output the VDP TEST PATTERN signal correspond to the
MIN value.
Read the white coordinate and communicate with ET7050
IC through measurement equipment of optics.
Adjust screen coordinates data to adjust the color
uniformity 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.
11.Brightness Adjusment of Main/Sub
screen
Operate this adjustment when the brightness of Main/Sub
screen is different.
(1) Receive RF 06Ch. to Main/Sub screen in twin picture.
(2) Let the screen clearly.
(3) Check the “US06CH” with naked eyes in 06Ch. pattern
and if there is difference, adjust like this.
- The field and the letters are distinguished.
(4) Adjusting Main screen
1) Press the “IN Start” key on R/C for adjustment to select
VPC3230_Main.
2) Adjust to Luma Contrast of adjustment item with
Channel key. (initial value 32)
(5) Adjusting Sub screen
1) Press the “IN Start” key on R/C for adjustment to select
VPC3230_Sub.
2) Adjust to Lima Contrast of adjustment item with +/- key.
(initial value 32)
12. Lamp Replace
Use it when the Lamp time is ‘0’.
At the same time press the ‘OK’ key and ‘Mute’ key during 5
seconds.
Displaying the OSD as <Fig.8> , press the Volume +(G)
Displaying the OSD as <Fig.9>, press the ‘OK’ key to reset
the lamp use time.
Press the IN-START key on R/C for adjustment to select
Lamp replace and adjust with volume key.
- 19 -
<Fig9. Reset Confirm>
<Fig8. Lamp Use Time Reset Menu>

- 20 -
RGB_PC RGB_DTV
COMP1 COMP2
R/G/B
TV_S(V)
AV1(V) AV2(V,Y,C)
MNT_OUT(V)
VPC3230_S
(IC102)
CXA2151 YCbCr(HD)
M_V,Y,C
S_V/Y,C
SDA5550
VPC3230_M
(IC104)
TXT_R,G,B
TXT_Y,Cb,Cr
ReaeyII
D_Y,Cb,Cr
D_Y,Cb,Cr CH_A
CH-B
DTV_HS/VS LPF_CTL2
* H : 30MHz, L:6MHz
AV3(V,Y,C))
Tuner(Main)
Tuner(Sub)
CXA2119
TXT_FB
SC-R,G,B
SC-R,G,B
Component Board
Tuner/AV
Digital Board
Main Board
CX2069
Switching
LPF AD9883A
(ADC)
16
33
3 3
5
1. Video Input Path
BLOCK DIAGRAM