LG RT-42LZ30 User manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : CL-70
MODEL : RT-42LZ30
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS .........................................................................3
SVC PRECAUTIONS................................................................................4
SPECIFICATION........................................................................................6
ADJUSTMENT INSTRUCTION .................................................................9
SVC REMOCON ......................................................................................14
TROUBLE SHOOTING............................................................................15
BLOCK DIAGRAM...................................................................................23
WRING .....................................................................................................25
EXPLODED VIEW .................................................................................. 26
EXPLODED VIEW PARTS LIST..............................................................27
REPLACEMENT PARTS LIST ................................................................28
SVC. SHEET ...............................................................................................

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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 isolation 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 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.
X-RAY Radiation
Warning:
To determine the presence of high voltage, use an accurate high
impedance HV meter.
Adjust brightness, color, contrast controls to minimum.
Measure the high voltage.
The meter reading should indicate
23.5 ¡1.5KV: 14-19 inch, 26 ¡1.5KV: 19-21 inch,
29.0 ¡1.5KV: 25-29 inch, 30.0 ¡1.5KV: 32 inch
If the meter indication is out of tolerance, immediate service and
correction is required to prevent the possibility of premature
component failure.
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 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 1MΩand 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
0.5mA.
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
The source of X-RAY RADIATION in this TV receiver is the High
Voltage Section and the Picture Tube.
For continued X-RAY RADIATION protection, the replacement
tube must be the same type tube as specified in the
Replacement Parts List.
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

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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
non-abrasive 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
heat sink 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 field-effect transistors and
semiconductor "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 electrostatic
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 sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges 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 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
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
replacement ES devices. (Otherwise harmless motion such as
the brushing 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 maintain 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. Thoroughly clean the surfaces to be soldered. Use a mall wire-
bristle (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
circuitboard 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

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c. Quickly 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 paragraphs 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 board.
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 heat sink 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 heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicular 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 involves 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.

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1. Application range
This specification is applied to CL-70 chassis.
2. Requirement for Test
Testing for standard of each part must be followed in below
condition.
(1) Ambient Temperature : 25°C ± 5°C(But, CST must be
tested 40°C ± 2°C (Humidity : 50%))
(2) Humidity : 65% ± 10%
(3) Power : Standard input voltage (AC 100-240V, 50/60Hz)
(4) Measurement must be performed after heat-run more than
15min.
(5) Adjusting standard for this chassis is followed a special
standard.
3. Test and Inspection method
(1) Capacity: Follow LG electronics TV Testing Standard.
(2) Another Required Standard
EMI: Following CE Standard(EN55020)
SAFETY: Following CB Standard(EN55013)
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement .
4. General Specification
1LCD Module Feature Maker LPL
Type TFT Color LCD Module
Active Display Area 42.02 inches(1067.308mm) diagonal
Pixel Pitch [mm] 0.681mm x 0.227mm x RGB
Electrical Interface LVDS
Color Depth 8bits, 16,777,216 colors
Size [mm] 1006(H) x 610(V) x 59(D)
Surface Treatment Anti-Glare, Hard Coating (3H)
Operating Mode Normally Black,
Back light Unit 20 CCFL
R/T Typ. 24ms(R.T.: 12ms + F.T.: 12ms)
5. Mechanical specification
No Item Content Remark
1Product Width (W) Length (D) Height (H)
Dimension Before Packing 1210 261 761 With Stand
After Packing 1326 380 898
2 Product Only SET 39Kg
Weight With BOX 41Kg

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6. Engineering Specification
No Item Content Remark
1. Supported Sync Type Separate Sync, SOG, Composite Sync, Digital
2 Operating Frequency Analog Horizontal 30 ~ 83 KHz
Vertical 56 ~85 Hz
Digital Horizontal 30 ~ 72 KHz
Vertical 56 ~ 85 Hz
3 Resolution Analog Max 1600 x 1200 @60Hz
Recommend 1360 x 768 @60Hz
Digital Max 1280 x 1024 @60Hz
Recommend 1360 x 768 @60Hz
4 Input Voltage Voltage : 100 ~ 240Vac , 50 or 60Hz
Current Rating
5 Inrush Current Cold : 40A , Hot : 40A
6 Operating Condition Sync (H/V) Video LED Wattage
Normal On/On Active Green ¡´260W
Power SW Stand by Off/On Off Amber ¡´4W
ON Suspend On/Off Off Amber ¡´4W
DPMS Off Off/Off Off Amber ¡´4W
Cut-off Switch off - ¡´3 W
7 MTBF 50,000 HRS with 90% Lamp Life :
Confidence level 50,000 Hours (min)
8 Using Altitude 5,000 m (for Reliability) 3,000 m (for FOS)
9 Environment Operating Temperature 5°C ~ 35°C
Condition Humidity 10% ~ 80%
Storage Temperature -20°C ~ 60°C non condensing
Humidity 5% ~ 95% non-condensing

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7. Special Function
No. Contents Description Remark
1 Audio Output Output 10W+10W Volume :Adjust
AMP Rating (Rated Out put ¡10%)
Freq. Character 100Hz ~ 10KHz Range ( -3 dB )
T.H.D Within 10%
Input Sensitivity 0.700Vrms
S/N More than 40dB
2 Speaker Type Built-In
Impedance 8¥
Input Max : 15W, Normal : 10W
3 AV Video Level Input : 0.7¡0.15 V p-p 75¥
Terminal Resistor
Sync Level Input : 0.286¡0.075 V p-p 75¥
Terminal Resistor
Color Burst Input : 0.214¡0.072 V p-p 75¥
Terminal Resistor
Audio Level NTSC Input : 0.40¡0.1 V rms 600¥
PAL Input: 0.5¡0.1
PC Input : 0.7¡0.1
Video Cross Talk 43 dB
8. Optical Character
No Item Criteria Remark
1 Viewing Angle Horizontal(R/L) : +85°/-85°(Min.) ,+88°/-88°(Typ.)
<CR°√10> Vertical(Top/Bottom) : +85°/-85°(Min.), +88°/-88°(Typ.)
2 Luminance Luminance (cd/m2) 400 cd/m2 (min.) 500cd/m2 (Typ) 9300K
Variation 1.3
3 Contrast Ratio 700(300) [min.], 1000(400)[Typ.] (Without AI)
4 CIE Color Coordinates Minimum Normal Maximum
White WX 0.283 0.313 0.343 6500K
WY 0.299 0.329 0.359
White Wx 0.254 0.284 0.314 9300K
Wy 0.265 0.295 0.325
Red RX 0.619 0.649 0.679
RY 0.305 0.335 0.365
Green GX 0.260 0.290 0.320
GY 0.567 0.597 0.627
Blue BX 0.112 0.142 0.172
BY 0.057 0.087 0.117

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ADJUSTMENT INSTRUCTION
1.Application Object
These instructions are applied to all of the MODELS of 42" LCD
TV.
2. Specifications
2.1 The adjustment is according to the order, which is as per
specifications, and easy to produce, which must be fo llowed.
It can be changed only on agreement
2.2 Power Adjustment: Free Voltage
2.3 Magnetic field condition: nil (none)
2.4 Input signal unit: As per Product specification standard
2.5 Preliminary Time: Above 30 minutes
2.6 Adjustment Equipment: W/B adjustment device (CA-110),
screen adjustment device (VG-828 or VG848 and other
interchange system) Oscilloscope and PC (Pentium class),
TV/AV Pattern Generator & 37" LCD Monitor.
3. Adjustment
3.1. Color coordinates adjustment and brightness adjustment
(D-sub Analog Input )
3.1.1 Color coordinates adjustment provisions:
- Signal equipment:
Output Voltage: 700 mVpp
Output Mode: It does #13 (WXGA 60 Hz) Setting
-PRESET adjustment : It sends a message before
adjusting "PRESET START ADJUSTMENT" and then
starts adjustment.
3.1.2 Black level adjustment (Bias Adj. adjustment):
- The input is Black Pattern with no SOG signal
- Send an instruction AUTO_COLOR_ADJUST (0xF1),
0x00 and it adjusts
- After waiting about 2 second, it checks the message,
which is an OK on the screen, the EEPROM 0xA0 0x00, it
checks if the address, is 0xAA.
- The "FAIL "message displays if the EEPROM 0xA0 0x00
address is not 0xAA, it adjusts again with the automatic
adjustment failure.
3.1.3. PRESET 1 (9300 K) color coordinate adjustment
- The input is Full White Pattern with no SOG signal
- It sends an instruction The AUTO_COLOR_ADJUST
(0xF1), 0x01 and it adjusts
- After waiting about 2 second, it checks the message,
which is an "OK"on the screen,, it checks the address, is
the EEPROM 0xA0 0x01- 0xAA.
-The "FAIL "message displays if the address is not
EEPROM 0xA0 0x01- 0xAA, it adjusts again the
adjustment failure.
3.1.4. PRESET 2 (6500 K) color coordinate adjustment
- Separate Adjustment process: nil(none)
- It automatically stores 6500K R = 9300K R, 6500K G =
9500K G - 10, 6500K B = 9300K B- 40
3.1.5. PRESET 3 (6500 K) color coordinate confirmation
- The input is Full White Pattern
- It sends an instruction The AUTO_MODE_CHANGE
(0xF2), 0x02 and the Setting it does 6500K and checks if
the color coordinate probably is the
x= 313¡30, y=329¡30
3.2. Color coordinates Adjustment and brightness Adjustment
(AV input)
3.2.1 Color coordinates adjustment provisions:
- Adjusting Each color coordinate and Black level
- Input signal: The CVBS (576i), 576i (HDTV port), 1080i
/60Hz (HDTV port) it Adjusts 3 Modes.
- Before Adjustment It shows a "PRESET ADJUSTMENT
START" message. and adjustment begins
3.2.2 Black level adjustment (Bias Adj. adjustment):
- The input is 1080i/60Hz signal in Component 1 input and
16/255 Gray Level.
- Brightness Range 0.9~1.1 cd/m2, In the Sub Bright (0x86)
In order to hold the variable brightness.
- Reference : With CVBS input 576i (Component 1) It is not
with from Adjustment. It does default setting for this value.
3.2.3.PRESET 1 (9300 K) color coordinate adjustment
- The Display is 240/255 Gray Level
- For Adjustment the R Gain is fixed at 100, to adjust G/B
gain , the color coordinates are, the x = 0.283¡0.010,
y=0.298¡0.010(G Gain is variable ,its range is 0 ~ 100)
- Only when the G gain goes over 100 it fixes the G gain
100 and R/B gain is variable It makes the color
coordinate. (Generally only R gain Or G gain is fixed to
100)
3.2.4. Gray Scale Check
- The input can be 3 modes .the CVBS (576i), 576i (HDTV
port), 1080i (HDTV port)
- For each mode GREY pattern is displayed
- Check 0 level is not displayed and 1/16 Grey is displayed
- The 15/16 Gray and 16/16 Gray are checked separately
3.3. Operation condition check
3.3.1 Operational mode : Every mode, which is in specification, is
checked that it is accurate and are operated.
3.3.2 Adjustment condition and operation check: Satisfactory yes
or no adjustment of screen adjustment standards
* Analog/Digital screen condition check: From lower part mode
screen condition good yes or no check
Designation mode: 640x350 (70Hz) - 1 mode, 800x600 (75Hz) - 2 modes,
1024x768(60Hz) - 12 modes, 1280x768(60 Hz) - 13 mode
-The input selection time is 8 seconds after key is pressed
and Analog or Digital display comes on the screen.

3.3.3 H/V Position, Clock, Clock Phase and Auto Calibration
operation check
-The Mode 13 (1280x768,60Hz) 1line from on/off pattern
H/V Position and the Clock, Clock Phase it is variable
each and it is checked it operates normally
-The Clock, Clock phase are adjusted by auto calibration
when they have become variable. They are checked
3.3.4 Color operation check: 9300K, 6500,USER COLOR are
checked for normal operation.
- It is checked that 9300 and USER COLOR setting are
same.
Other quality : Satisfactory yes or no adjustment against
each item from the standard condition which is written
clearly in the product specification
(1) Each SOURCE image and Sound check
- A/V : supports NTSC, PAL
- TV : It matches product specification
3.3.5 Audio Spec
Speaker: 8ohm
Input (PC AUDIO) : 0.7Vrms , Output : 10W
Input (A/V) : 0.5Vrms, Output : 10W
3.3.6 OSD and terminal check. Check clearly,adjustment fallows
the product specification.
3.3.7 The input is Color bar pattern and 256 Gray scale pattern
and check if normal color is displayed properly
3.3.8 DPM operation confirmation: the power LED glow and
voltage power consumption is checked,(when No image
signal condition)
3.3.9 E-DDC EDID Write
- Analog Part EDID Data Store
- Connect Analog Signal Cable to D-SUB Jack
Write DDDC data 24C02 and check DDC function
operates normally and DDC data is written correctly
*Stores Digital Part EDID Data
- Connect Digital Signal Cable to DVI-D Jack
Write DDDC data 24C02 and check DDC function
operates normally and DDC data is written correctly
3.2.5.11. RS 232C
- Connect serial cable to RS232C
- It fixes speed of 115200BPS
- Send the instruction " 0x04, 0xaa, 0xff, 0x53"and check
"OK" Message. is display on screen
3.2.5.12. All Reset
- All Tests finish when inside service mode. the NVRAM
INITIAL makes it ON with Initial Data
3.2.5.13 LANGUAGE: The default language is ENGLISH as in
the Product Specification. Another language can be set
as per Product Specification.
3.2.5.14. Country Option Setting
- Enter the Service menu Adjustment.
- In the SERVICE MENU select Option1&Option2 and set
up as .
(EUROPE / AUSTRALIA / CHINA ... ... ...ETC)
* SVC Menu Operation
During Power On Condition press 3+0+2+0 The OSD moves
to SPECIAL MENU and SVC OSD is displayed.
- 10 -
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 00 FF FF FF FF FF FF 00 1E 6D 4C 75 01 01 01 01
10 01 0E 01 03 EE 52 2E 78 EA D9 B0 A3 57 49 9C 25
20 11 49 4B A5 6A 80 81 80 45 59 31 59 01 01 01 01
30 01 01 01 01 01 01 30 2A 00 98 51 00 2A 40 30 70
40 13 00 78 2D 11 00 00 1E 1B 21 50 A0 51 00 1E 30
50 48 88 35 00 A2 0B 32 00 00 1C 00 00 00 FD 00 38
60 55 1E 48 0B 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 52 54 2D 33 37 4C 5A 33 30 0A 20 20 20 00 6F
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 00 FF FF FF FF FF FF 00 1E 6D 4B 75 01 01 01 01
10 01 0E 01 03 6E 52 2E 78 EA D9 B0 A3 57 49 9C 25
20 11 49 4B A5 6B 80 A9 40 81 80 45 59 31 59 01 01
30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88
40 35 00 A2 0B 32 00 00 1C 00 00 00 FD 00 38 55 1E
50 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC 00 52
60 54 2D 33 37 4C 5A 33 30 0A 20 20 20 00 00 00 FC
70 00 0A 20 20 20 20 20 20 20 20 20 20 20 20 00 A6

4. Manual and Automatic Equipment Adjustment Confirmation Standards:
5. Adjustment use pattern
- 11 -
NO. ITEM Adjustment and Mode of Operation Operation Measurement
Measurement Standard Analog Digital Pattern Location
1 Voltage (V) 24V¡5% MODE 14 Mode 14 Pattern 4 Each Power TP
12V¡5%
5V¡5%
2 Video Level 0.7Vp.p MODE 1-17 MODE 1-15 ALL
3 Color Black Automatic Adjustment MODE 14 Mode 14 Pattern 0 Screen
coordinate Level (manual adjustment) Center
4 Color Drive 1 x 0.285¡0.03 MODE 14 Mode 14 Pattern 1 Screen
coordinate y 0.293¡0.03 Center
(9300K)
5 Brightness 9300K Over 400 cd/m2 MODE 14 Mode 14 Pattern 1 Screen
(cd/m^2) Center
6 Screen Hor. FULL SIZE MODE 1-17 MODE 1-15 Pattern 5 Whole
position screen
Vert. MODE 1-15
7 Screen CLOCK FULL SIZE MODE 14 Mode 14 Pattern 4 Whole
refresh PHASE screen
8 DPM check Normal Mode ¡´320W MODE 14 Mode 14 Pattern 4 Green
Stand By Mode ¡´5W Pattern 6 Amber
Suspend Mode ¡´5W Pattern 7 Amber
Power Off ¡´5W Pattern 8 Amber
9 Cut-off Switch off state 0W Irrespective of mode Irrespective of LED OFF
pattern
10 Gray Scale check Linear gray scale MODE 14 Mode 14 Pattern 9 Whole screen
11 SOG /COMPOSITE Full Size Mode 03, 11,12 It does not co Pattern 5 Whole
signal check time Serration check screen
1H OFF SOG
signal
- Pattern 0 : The Color 0,0 (the condition which is not video signal):separate Black Pattern with no Different character display
- Pattern 1 : Full White (Color 15,0) : Separate Full White pattern with no Different character display
- Pattern 4 : The Cross Hatch pattern to do (horizontal 10 units, Vertical 8 unit) & Rectangle Pattern
- Pattern 5 : 1 Dot on, 1 Dot off (COLOR 15,0) & Rectangle Pattern
- Pattern 6 : Only Vertical Sync signal input (the Pin #5 is made GND and S/cable is used)
- Pattern 7 : Only horizontal Sync signal input (the Pin #5 is made GND and S/cable is used)
- Pattern 8 : Vertical/ horizontal Sync signal, the condition which is not Video signal(the Pin #5 is made GND and S/cable is used)
- Pattern 9 : 256 Gray Level Pattern

- 12 -
VIDEO
SYNC FB
D
E
A
<< Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >>
MODE H / V Sync
Polarity Frequency
[kHz]/[Hz] Total
Period( E )
Display
( A ) Sync
( C )
Resolution
Dot Clock
[MHz] Back
Porch(B)
Front
Porch ( D )
1H(Pixels) + 25.175 31.469 800 640 16 96 48 640 x 350
V(Lines) - 70.8 449 350 37 2 60
2H(Pixels) - 28.321 31.468 900 720 18 108 54 720 X 400
V(Lines) + 70.8 449 400 12 2 35
3H(Pixels) - 25.175 31.469 800 640 16 96 48 640 x 480
V(Lines) - 59.94 525 480 10 2 33
4H(Pixels) - 31.5 37.5 840 640 16 64 120 640 x 480
V(Lines) - 75 500 480 1 3 16
5H(Pixels) - 36.0 43.269 832 640 56 56 80 640 x 480
V(Lines) - 85.0 509 480 1 3 25
6H(Pixels) + 40.0 37.879 1056 800 40 128 88 800 x 600
V(Lines) + 60.317 628 600 1 4 23
7H(Pixels) + 49.5 46.875 1056 800 16 80 160 800 x 600
V(Lines) + 75.0 625 600 1 3 21
8H(Pixels) + 56.25 53.674 1048 800 32 64 152 800 x 600
V(Lines) + 85.061 631 600 1 3 27
9H(Pixels) - 57.283 49.725 1152 832 32 64 224 832 x 624
V(Lines) - 74.550 667 624 1 3 39
10 H(Pixels) - 65.0 48.363 1344 1024 24 136 160 1024 x 768
V(Lines) - 60.0 806 768 3 6 29
11 H(Pixels) - 75.00 56.476 1328 1024 24 136 144 1024 x 768
V(Lines) - 70.069 806 768 3 6 29
12 H(Pixels) + 78.75 60.123 1312 1024 16 96 176 1024 x 768
V(Lines) + 75.029 800 768 1 3 28
13 H(Pixels) + 80.00 54.348 1472 1152 32 96 192 1280 x 720
V(Lines) + 60.053 905 864 1 3 37
14 H(Pixels) + 180.00 60.00 1800 1280 96 112 312 1360 x 768
V(Lines) + 60.0 1000 960 1 3 36
15 H(Pixels) + 108.0 63.981 1688 1280 48 112 248 1280 x 1024
V(Lines) + 60.02 1066 1024 1 3 38
16 H(Pixels) + 135.00 79.98 1688 1280 16 144 248 1280 x 1024
V(Lines) + 75.02 1066 1024 1 3 38
17 H(Pixels) + 162.00 75.00 2160 1600 90 30 88 1600 x 1200
V(Lines) + 60 1250 1200 1 3 46
TIMING CHART
D-Sub : supports 1 ~ 17 until
DVI-D :1 ~ 15 times until (MAX 1280X1024 @ 60 Hz)

- 13 -
DTV Timing Chart
Component Video Input (YPbPr)
Reference
No Resolution H-freq(kHz) V-freq(Hz) Proposed
1. 720*576 31.2 25 HDTV 576i
2. 720*576 31.2 50 HDTV 576P
3. 1280*720 37.5 50 HDTV 720P
4. 1920*1080 28.1 25 HDTV 1080i
OPTION 1 OPTION 2 Setting Value
Sales Area TELETEXT ACMS I II SAVE TOP 200PR Hidev
Setting Value TextLang Country OSDLanguage
Setting Value
HONGKONG 0 1 1 0 0 0 6 0(West EU) Else 0(English) 24
THILAND 1 1 1 0 0 0 7
0(West EU) Else 0(English) 24
SINGAPORE 1 1 1 0 0 0 7
0(West EU) Else 0(English) 24
CHINA 0 1 1 0 1 0 22
0(West EU) Chinese 6(chinese) 208
AUSTARALIA 1 1 1 0 0 0 7
0(West EU) Australia 0(English) 8
UAE 1 1 1 0 0 0 7
4(ARAB ENG) else 0(English) 28
SAUDI 1 1 1 0 0 0 7
4(ARAB ENG) else 0(English) 28
MALAYSIA 1 1 1 0 0 0 7
0(West EU) Else 0(English) 24
INDONESIA 1 1 1 0 0 0 7
0(West EU) Else 0(English) 24
MONGOLIA 1 1 1 0 0 0 7 3(Cyrillic3) Else 0(English) 27
INDIA 1 1 1 0 0 0 7
0(West EU) Else 0(English) 24
IRAN 1 1 1 0 0 0 7
5(FARSI ENG) Else 0(English) 29
LSB MSB LSB MSB

- 14 -
SVC REMOCON
1 POWER
2 POWER ON
3 MUTE
4 P-CHECK
5 S-CHECK
6 ARC
7 CAPTION
8 TXT
9 TV/AV
10 TURBO SOUND
11 TURBO PICTURE
12 IN-START
13 ADJ
14 MPX
15 EXIT
16 APC(PSM)
17 ASC(SSM)
18 MULTIMIDIA
19 FRONT-AV
20 CH¡
21 VOL¡
22 ENTER
23 PIP CH-(OP1)
24 PIP CH+(OP2)
25 PIP SWAP(OP3)
26 PIP INPUT(OP4)
27 EYE
28 MENU
29 IN-STOP
30 STILL
31 TIME
32 SIZE
33 MULTI PIP
34 POSITION
35 MODE
36 PIP
37 TILT
38 0~9
To turn the TV on or off
To turn the TV on automatically if the power is supplied to the TV. (Use the
POWER key to deactivate): It should be deactivated when delivered.
To activate the mute function.
To check TV screen image easily.
To check TV screen sound easily
To select size of the main screen (Normal, Spectacle, Wide or Zoom)
Switch to closed caption broadcasting
To toggle on/off the teletext mode
To select an external input for the TV screen
To start turbo sound
To start turbo picture
To enter adjustment mode when manufacturing the TV sets.
To adjust the screen voltage (automatic):
In-start ¡mute ¡Adjust ¡AV(Enter into W/B adjustment mode)
W/B adjustment (automatic):
After adjusting the screen ¡W/B adjustment ¡Exit two times (Adjustment completed)
To enter into the adjustment mode. To adjust horizontal line and sub-brightness.
To select the multiple sound mode (Mono, Stereo or Foreign language)
To release the adjustment mode
To easily adjust the screen according to surrounding brightness
To easily adjust sound according to the program type
To check component input
To check the front AV
To move channel up/down or to select a function displayed on the screen.
To adjust the volume or accurately control a specific function.
To set a specific function or complete setting.
To move the channel down in the PIP screen.
To use as a red key in the teletext mode
To move the channel in the PIP screen
To use as a green key in the teletext mode
To switch between the main and sub screens
To use as a yellow key in the teletext mode
To select the input status in the PIP screen
To use as a blue key in the teletext mode
To set a function that will automatically adjust screen status to match
the surrounding brightness so natural color can be displayed.
To select the functions such as video, voice, function or channel.
To set the delivery condition status after manufacturing the TV set.
To halt the main screen in the normal mode, or the sub screen at the PIP screen.
Used as a hold key in the teletext mode (Page updating is stopped.)
Displays the teletext time in the normal mode
Enables to select the sub code in the teletext mode
Used as the size key in the PIP screen in the normal mode
Used as the size key in the teletext mode
Used as the index key in the teletext mode (Top index will be
displayed if it is the top text.)
To select the position of the PIP screen in the normal mode
Used as the update key in the teletext mode (Text will be
displayed if the current page is updated.)
Used as Mode in the teletext mode
To select the simultaneous screen
To adjust screen tilt
To manually select the channel.
Shortcut keys
Shortcut keys
Shortcut keys
Use the AV
key to enter
the screen
W/B
adjustment
mode.
Shortcut keys
Shortcut keys
Shortcut keys
NO KEY FUNTION
REAMARK

- 15 -
TROUBLESHOOTING
1. NO POWER
NO POWER
(POWER INDICATOR OFF)
CHECK POWER BOARD
CHECK J601
VOLTAGE
(18V, 12V, 5V)?
NO
CHECK POWER BOARD
CHECK
J602 VOLTAGE
(24V, 33V) ?
NO
CHECK KEY
CONTROL BOARD
YES
YES
YES
CHECK X401
CHECK
X401
(14.318MHz) ? NO
CHECK MICOM(U402)
SUB POWER PORT(R634)
CHECK
J601
(SUB POWER) ? NO
1 2 3
4 5
6
7
1 2 3
Waveforms
1 2 3
Waveforms
J601-18V J601-12V J601-5V

- 16 -
4 5
6 7
Waveforms
J602-24V J602-12V
X401-14.318MHz J601

- 17 -
2. NO RASTER(OSD IS NOT DISPLAYED)
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK THE PERIPHERAL
IC U402
CHECK U402? NO
CHECK THE PERIPHERAL
J802
CHECK
LVDS OUTPUT
(J802)?
NO
CHECK INVERTER
YES
YES
YES
YES
CHECK U607 AND THE
PERIPHERAL IC U607
CHECK
INVERTER POWER
(J606, J607) ? NO

- 18 -
3. NO RASTER ON VIDEO SIGNAL INPUT
NO RASTER ON VIDEO SIGNAL
CHECK CABLE OF
VIDEO/COMPONENT
CHECK THE PERIPHERAL
UPD64011(U904)
CHECK THE PERIPHERAL IC
OF UPD64011, MDIN150 SDRAM
CHECK THE PERIPHERAL IC
OF GM1501(U402)
CHECK UPD64011(U904)I/O
SIGNAL
CHECK MDIN150(U901) AND
SDRAM(U902) I/O SIGNAL
CHECK GM1501(U402)AND
SDRAM(U401)
POWER CHECK OF CXA2040(U201) : U204(9V)
POWER CHECK OF UPD64011(U904) : U905(3.3V), U906(1.5V)
POWER CHECK OF MDIN150(U901) : U907(3.3V), U908(2.5V)
POWER CHECK OF GM1501(U402)
NO INPUT SIGNAL
NO OUTPUT SIGNAL
NO INPUT SIGNAL
NO OUTPUT SIGNAL
NO INPUT SIGNAL

- 19 -
4. NO RASTER ON TV SIGNAL INPUT
NO RASTER ON TV SIGNAL
CHECK CONNECTION OF TV
TUNER AND ANTENNA
CHECK THE PERIPHERAL
CXA2040, UPD64011(U904)
SELECT AUTO CH OF OSD
CHECK THE PERIPHERAL IC
OF UPD64011, MDIN150, SDRAM
CHECK THE PERIPHERAL IC
OF GM1501(U402)
CHECK TV CH
CHECK UPD64011(U6) I/O
SIGNAL
CHECK MDIN150(U901) AND
SDRAM(U902) I/O SIGNAL
CHECK GM1501(U402) AND
SDRAM(U401)
POWER CHECK OF TUNER(TU201) : L219(33V), L220(5V)
POWER CHECK OF CXA2040(U201) : U204(9V)
POWER CHECK OF UPD64011(U904) :U905(3.3V), U906(1.5V)
POWER CHECK OF MDIN150(U901) :U907(3.3V), U908(2.5V)
POWER CHECK OF GM1501(U402)
NO INPUT SIGNAL
NO OUTPUT SIGNAL
NO INPUT SIGNAL
NO OUTPUT SIGNAL
NO INPUT SIGNAL

- 20 -
5. SOUND TROBLE SHOOTING
NO SOUND OUTPUT
CHECK SOUND OF VCR,DVD,PC
(TV)CHECK OF CONNECTION OF
TUNER AND ANTENNA
CHECK THE PERIPHERAL IC
OF MSP3410G(U501)
CHECK THE PERIPHERAL IC
OF TPA3004(U502)
CHECK CONNECTION OF
SPEAKER ON MONITOR
CHECK SOUND INPUT
=>PC SOUND(J707)
=>VIDEO, DVD, DTV SOUND
(RED, WHITE OF J701, J702)
CHECK THE PERIPHERAL IC OF
MSP3410G(U501)
CHECK MSP3410G(U501) I/O SIGNAL
CHECK TPA3004(U502) I/O SIGNAL
CONNECTOR CHECK
POWER CHECK OF MSP3410G(U501) : U522(8V), L501(5V), L505(5V)
POWER CHECK OF TPA3004(U502) : C564(18V)
NO OUTPUT SIGNAL
NO OUTPUT SIGNAL
NO INPUT SIGNAL
NO INPUT SIGNAL
NO INPUT SIGNAL