LG 32LB9D Series User manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LA73A
MODEL : 32LB9D 32LB9D-UA
MODEL : 32LB9DB 32LB9DB-UB
website:http://biz.LGservice.com
Internal Use Only

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ................................................................................. 3
SPECIFICATION ....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 10
TROUBLE SHOOTING & ....................................................................... 15
BLOCK DIAGRAM.................................................................................. 28
EXPLODED VIEW .................................................................................. 32
REPLACEMENT PARTS LIST ............................................................... 34
SVC. SHEET ...............................................................................................

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
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SAFETY PRECAUTIONS
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.
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
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

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 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.
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. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. 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.
5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.
6. 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.
7. 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.
8. 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 circuit
board 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.
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.
SERVICING PRECAUTIONS

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 5 -
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.

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 6 -
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement
.
4. General Specification(TV)
No. Item Specification Remark
1. Receiving System ATSC/ NTSC-M
2. Available Channel 1) VHF : 02~13
2) UHF : 14~69
3) DTV : 02-69
4) CATV : 01~125
5) CADTV : 01~135
3. Input Voltage 1) 100-240V~, 50/60Hz Mark : 110V, 60Hz
4. Market NORTH AMERICA
5. Screen Size 32 inch Wide (1366 x 768) 32LB4DS-UA/32LB9D-UA
6. Aspect Ratio 16:9
7. Tuning System FS
8. LCD Module LC320WX1-SLA1 32LB4DS-UA/32LB9D-UA
9. Operating Environment 1) Temp : 0 ~ 40 deg
2) Humidity : ~ 80 %
10. Storage Environment 1) Temp : -20 ~ 60 deg
2) Humidity : 0 ~ 90 %
1. Application Range.
This specification sheet is applied to the 32" LCD TV used
LA73A chassis.
2. Specification
Each part is tested as below without special appointment
1) Temperature : 25 ±5°C (77 ±9ºF), CST : 40 ±5ºC
2) Relative Humidity : 65 ±10%
3) Power Voltage : Standard input voltage
(100-240V@ 50/60Hz)
• Standard Voltage of each products is marked by models
4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
5) The receiver must be operated for about 20 minutes prior to
the adjustment.
3. Test method
1) Performance : LGE TV test method followed.
2) Demanded other specification
Safety : UL, CSA, IEC specification
3) EMC : FCC, ICES, IEC specification

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 7 -
5. Chroma & Brightness
CONDITION : EZ-Picture "Daylight"
No Item Min. Typ. Max. Unit Remark
1 White peak brightness 400 500 cd/m2
2 Brightness uniformity 80 Full white
3 Color coordinate RED X Typ. 0.638 Typ.
Y -0.03 0.340 +0.03
GREEN X 0.279
Y 0.611
BLUE X 0.145
Y 0.065
WHITE X 0.276
Y 0.283
4 Contrast ratio 800:1 1000:1
5 Color Temperature Standard 11000 <Test Signal>
Cool 9300 HDMI input,
Warm 6500 85% Full white pattern
6 Color Distortion, DG 10.0 %
7 Color Distortion, DP 10.0 deg
8 Color S/N, AM/FM 43.0 dB
9 Color Killer Sensitivity -80 dBm
6. Component Input (Y, CB / PB, CR / PR)
No. Specification Remark
Resolution H-freq(kHz) V-freq(Hz)
1 720*480 15.73 60 SDTV ,DVD 480I
2 720*480 15.73 59.94 SDTV ,DVD 480I
3 720*480 31.47 60 SDTV 480P
4 720*480 31.47 59.94 SDTV 480P
5 1280*720 45.00 60.00 HDTV 720P
6 1280*720 44.96 59.94 HDTV 720P
7 1920*1080 33.75 60.00 HDTV 1080I
8 1920*1080 33.72 59.94 HDTV 1080I
9 1920*1080 67.500 60 HDTV 1080P
10 1920*1080 67.432 59.939 HDTV 1080P
11 1920*1080 27.000 24.000 HDTV 1080P
12 1920*1080 26.97 23.94 HDTV 1080P
13 1920*1080 33.75 30.000 HDTV 1080P
14 1920*1080 33.71 29.97 HDTV 1080P

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Only for training and service purposes
- 8 -
7. RGB PC
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Remark
PC DDC
1 640*350 31.468 70.09 25.17 EGA X
2 720*400 31.469 70.08 28.32 DOS O
3 640*480 31.469 59.94 25.17 VESA(VGA) O
4 640*480 37.861 72.80 31.50 VESA(VGA) O
5 640*480 37.500 75.00 31.50 VESA(VGA) O
6 800*600 35.156 56.25 36.00 VESA(SVGA) O
7 800*600 37.879 60.31 40.00 VESA(SVGA) O
8 800*600 48.077 72.18 50.00 VESA(SVGA) O
9 800*600 46.875 75.00 49.50 VESA(SVGA) O
10 1024*768 48.363 60.00 65.00 VESA(XGA) O
11 1024*768 56.476 70.06 75.00 VESA(XGA) O
12 1024*768 60.023 75.02 78.75 VESA(XGA) O
13 1280*768 47.776 59.870 79.5 CVT(WXGA) O
14 1280*768 60.289 74.893 102.25 CVT(WXGA) O
15 1360*768 47.712 60.015 85.50 VESA (WXGA) O
16 1280*1024 63.981 60.020 108.00 VESA (SXGA) O
17 1280*1024 79.976 75.025 135 VESA (SXGA) O
18 1600*1200 75.00 60.00 162 VESA (UXGA) O
19 1920*1080 67.5 60 148.5 HDTV 1080P O

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Only for training and service purposes
- 9 -
8. HDMI Input (PC / DTV)
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Remark
PC DDC
1 640*350 31.468 70.09 25.17 EGA X
2 720*400 31.469 70.08 28.32 DOS O
3 640*480 31.469 59.94 25.17 VESA(VGA) O
4 640*480 37.861 72.80 31.50 VESA(VGA) O
5 640*480 37.500 75.00 31.50 VESA(VGA) O
6 800*600 35.156 56.25 36.00 VESA(SVGA) O
7 800*600 37.879 60.31 40.00 VESA(SVGA) O
8 800*600 48.077 72.18 50.00 VESA(SVGA) O
9 800*600 46.875 75.00 49.50 VESA(SVGA) O
10 1024*768 48.363 60.00 65.00 VESA(XGA) O
11 1024*768 56.476 70.06 75.00 VESA(XGA) O
12 1024*768 60.023 75.02 78.75 VESA(XGA) O
13 1280*768 47.776 59.870 79.5 CVT(WXGA) O
14 1360*768 47.712 60.015 85.50 VESA (WXGA) O
15 1280*1024 63.981 60.020 108.00 VESA (SXGA) O
16 1280*1024 79.976 75.025 135 VESA (SXGA) O
17 1600*1200 75.00 60.00 162 VESA (UXGA) O
18 1920*1080 67.5 60 148.5 HDTV 1080P O
DTV
1 720*480 31.47 60 SDTV 480P
2 720*480 31.47 59.94 SDTV 480P
3 1280*720 45.00 60.00 HDTV 720P
4 1280*720 44.96 59.94 HDTV 720P
5 1920*1080 33.75 60.00 HDTV 1080I
6 1920*1080 33.72 59.94 HDTV 1080I
7 1920*1080 67.500 60 HDTV 1080P
8 1920*1080 67.432 59.939 HDTV 1080P
9 1920*1080 27.000 24.000 HDTV 1080P
10 1920*1080 26.97 23.94 HDTV 1080P
11 1920*1080 33.75 30.000 HDTV 1080P
12 1920*1080 33.71 29.97 HDTV 1080P

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 10 -
ADJUSTMENT INSTRUCTION
1. Application Object
These instructions are applied to all of the LCD TV models
with LA73A chassis.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test equipment.
(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the circumstance of
20±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver be must kept 220V, 60Hz
when adjusting.
(5) The receiver must be operational for about 15 minutes
prior to the adjustments.
* Perform preliminary operation after receiving 100% White
Pattern (06CH).(or 8. White Pattern status of Ez-Adjust)
* How to enter White Pattern
1) Press the POWER ON key on the adjustment remote
control or press the ADJ key on the adjustment remote
control to enter Ez-Adjust.
2) Select the ‘10.Test Pattern’ using the CH + / - key and
then select White using the arrow keys to display the
100% FULL WHITE PATTERN.
- In this mode, It is possible to heat run the set without
separate signal generator.
Caution : When you keep the still screen on for more than
20 minutes (Especially internal digital pattern (13 CH),
Cross Hatch Pattern (09CH) with higher black/white
contrast), be careful not to create residual image on the
black level part.
3. Board adjustment
3-1. Adjustment method using RS-232C
(1) Adjustment protocol
note) ADC adjustment RS232C Protocol_Ver 1.0
(2) Necessary details before adjustment
- Pattern Generator : (MSPG-925FA)
- AV1 input (MSPG-925FA : model :201 , pattern :33)
- Adjust 480i Comp1(MSPG-925FA: mode:209, pattern:65)
- Adjust 1080p Comp1/RGB
(MSPG-925FA:model:225, pattern:65)
- RS232C ECHO exists for Everest3 Set
For details on the necessary requirement, refer to the
following adjustment method.
(3) Adjustment order
- ad 00 00 Enter ADC adjustment mode.
- kb 00 01 Switch RF input (Input is not switched)
- ad 00 10 Adjust RF and Video (Input is switched and
adjusted)
- kb 00 04 Switch component1 input (Input is not switched)
- ad 00 10 Adjust 480i Comp1 (Input is switched and
adjusted)
- kb 00 06 Switch RGB-DTV input (Actual input is not
switched)
- ad 00 10 Adjust 1080p Comp1/RGB (Input is switched
and adjusted)
- ad 00 90 Complete adjustment
3-2. Adjustment of RF/AV/S-VIDEO
(1) Introduction
This is a adjustment to reduce the color difference of video
signal
(2) Adjustment method
1) Connect the Video Signal Generator (Master) to TV AV
input terminal with AV output. At this time, when you
enter the input pattern as Model : 201(NTSC-M) ,
Pattern : 33(100% color Bar), the following video is
displayed on the screen.
Note: When the video is shown as follows showing
black patterns from the left, it cannot be adjusted.
Order Adjuster command Set response
Enter adjustment mode ad 00 00 d 00 OK00x
Switch source kb 00 01 b 00 OK01x (Adjust RF and Video)
kb 00 04 b 00 OK04x (Adjust 480i Comp1)
kb 00 06 b 00 OK06x (Adjust 1080p Comp1/RGB)
Start adjustment ad 00 10
Return adjustment result OKx (When succeeded)
NGx (When failed )
Read adjustment data (main) (For main)
ad 00 20 000000000000000000000000007c007b006dx
(sub) (For sub)
ad 00 21 000000070000000000000000007c00830077x
Check adjustment ad 00 99 NG 03 00x (When failed)
NG 03 01x (When failed)
NG 03 02x (When failed)
OK 03 03x (When succeeded)
Complete adjustment ad 00 90 d 00 OK90x
<Fig 1> Model : 201(NTSC-M) , Pattern : 33(100% color Bar)
<Fig, 2>

In this case, first press the Rev button of Video Signal
Generator (Master), to generate the white pattern to be
displayed from the left.
* Because the above pattern can differ by the model
and pattern for each device, you must check the
pattern first.
2) When the receiving signal is confirmed after inputting
the internal signal, press the ADJ key on the adjustment
remote control to enter ‘EZ-ADJUST’. Select ‘5.Adjust
RF and Video’ and press the right key (G) to enter the
adjustment mode.
3) When you enter the adjustment mode, the video is
automatically set to TV 2CH and the following window is
displayed.
4) When the adjustment is completed, a message saying
‘RF Configuration Success’ is displayed. If the
adjustment has failed, a message saying ‘RF
Configuration Error’ is displayed.
5) When the automatic adjustment of RF signal is
completed, it is automatically switched to the Video
Mode as shown in the above picture, and automatic
adjustment for Video Mode is done. When the
automatic adjustment is completed, a message saying
‘Video Configuration Success’ is displayed. If the
adjustment has failed, a message saying ‘Video
Configuration Error’ is displayed.
* Check RS-232C operation
Press the Instart of adjustment R/C to enter the 7.Baud Rate
menu and set the Baud Rate to 115200 to check the 232-C
operation.
4. Set adjustment
4-1. Adjustment of Component 480i/ 1080p,
RGB 1080p
(1) Introduction
The Component 480i/1080p RGB 1080p adjustment sets
the optimal black level and gain automatically from the
analog => digital converter, and is the function to correct
the RGB deviation.
(2) Required Equipment
Adjustment remote controller, 801GF (802B, 802F, 802R)
or MSPG925FA Pattern Generator (480i/1080P Horizontal
100% Color Bar Pattern output must be possible and
output level must be adjusted accurately to 0.7±0.1Vp-p.)
* Because the above pattern can differ by the model and pattern
for each device, you must check the pattern first.
(3) 480i Comp1, 1080p Comp1/RGB adjustment
method
1) ADC 480i component1 adjustment
- Check Component1 connected condition from the
using device.
- (MSPG-925FA : -> model :209 , pattern :65 )
2) Input Component 100% Horizontal Color Bar Pattern
(HozTV31Bar) of 480i Mode that is supported, select
the input to Component1 and select the video to
‘Normal’.
3) Wait for more than 1 second after receiving the signal
and then press the ADJ KEY on the adjustment R/C to
enter ‘Ez – Adjust’. Select ‘3. ADC 480i Comp1’ and
press the Enter KEY to make the automatic adjustment.
4) When the adjustment is normally completed, a message
saying “ADC Component1 Success” is displayed.
5) When the adjustment is not normally completed, a
message saying ‘ADC Component1 480i Fail’ is
displayed. When the component is not connected, a
message saying ‘Component1 Not Connected’, when
the input format is not 480i, a message saying ‘Not
Valid Format’ and when the input signal is not coming
out, a message saying ‘Check Signal Status’ is
displayed for 1 second.
6) ADC 1080P Component1/RGB adjustment
- Check the Component1, RGB connected condition
from the using device.
- (MSPG-925FA : --> model :225 , pattern :65 )
7) Input Component 100% Horizontal Color Bar Pattern
(HozTV31Bar) of 480i Mode that is supported, select
the input to Component1 and select the video to
‘Normal’.
- 11 - LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
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<Fig, 4>
<Fig, 3>
<Fig. 6> Adjustment pattern : 480i / 1080P 60Hz Pattern
<Fig 5>

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 12 -
8) Wait for more than 1 second after receiving the signal
and then press the ADJ KEY on the adjustment R/C to
enter ‘Ez – Adjust’. Select ‘4. ADC 1080P Comp1/RGB’
and press the Enter KEY to make the automatic
adjustment for component 1 first.
9) When the adjustment is normally completed, a message
saying “ADC Component1 Success” is displayed, and
when the adjustment is not normally completed, a
message saying ‘ADC Component1 1080P Fail’ is
displayed.
10) After the Component1 adjustment is completed, it is
automatically switch to RGB-DTV Mode to start RGB
adjustment. When the adjustment is normally
completed, a message saying “ADC RGB 1080P
Success” is displayed.
11) When the adjustment is not normally completed, make
the adjustment again after checking the pattern or
adjustment condition. The error message is as 5).
12) When the adjustment is completed, press the ADJ key
to exit.
4-2. EDID(The Extended Display Identification Data)
/DDC(Display Data Channel) Download
This has been established by VESA and is the function
created to “Plug and Play” by making the computer
reconfigure user environment through communication with the
monitor automatically without having the user set commands
directly to the PC or the monitor so that the user can use it
immediately.
* When writing EDID, use DDC2B protocol.
(1) HDMI EDID Data Input
1) Required Test Equipment
- PC, Jig for adjusting DDC. (PC serial to D-sub
Connection equipment)
- S/W for writing DDC (EDID data write & read)
- D-Sub cable
- Jig for HDMI Cable connection
2) Adjustment preparation & device configuration
- Configure as Fig. 7, and turn on the PC
- Turn on the JIG.
- Run the DDC recording S/W (EDID Data Write &
Read). (Execute in DOS mode)
(2) EDID DATA for LA73A
- EDID for HDMI-1 (DDC (Display Data Channel) Data)
EDID table =
- EDID for HDMI-2 (DDC (Display Data Channel) Data)
- EDID for HDMI-3 (DDC (Display Data Channel) Data)
LCD TV SET
(or Digital Board)
012 3 4 5 67 8 9 ABCD EF
000FFFFFFFFFFFF001E6D010001010101
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
012 3 4 5 67 8 9 ABCD EF
0 020317F1478405030220221023150750
10 66 03 0C 00 10 00 80 01 1D 00 72 51 D0 1E 20 6E
20 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16
30 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A 20
40 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A D0
50 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 0E
60 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00
70 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 41
<Fig 7> Device configuration diagram for HDMI EDID data input
012 3 4 5 67 8 9 ABCD EF
000FFFFFFFFFFFF001E6D010001010101
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
012 3 4 5 67 8 9 ABCD EF
0 020317F1478405030220221023150750
10 66 03 0C 00 20 00 80 01 1D 00 72 51 D0 1E 20 6E
20 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16
30 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A 20
40 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A D0
50 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 0E
60 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00
70 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 31
012 3 4 5 67 8 9 ABCD EF
000FFFFFFFFFFFF001E6D010001010101
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
012 3 4 5 67 8 9 ABCD EF
0 020317F1478405030220221023150750
10 66 03 0C 00 30 00 80 01 1D 00 72 51 D0 1E 20 6E
20 28 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16
30 20 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A 20
40 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A D0
50 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 0E
60 1F 00 80 51 00 1E 30 40 80 37 00 C4 8E 21 00 00
70 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 21

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 13 -
- EDID for RGB-PC
5-3. Adjustment of White Balance
(1) Required Equipment
1) Color Analyzer : CA-210(CH 9)
2) Automatic adjustor (with automatic adjustment necessity
and the RS-232C communication being possible, Baud
Rate : 115200)
3) Video signal generator MSPG-925F 720P, 216Gray
(Model : 217, Pattern 78)
(2) Measuring device connection diagram
(for automatic adjustment)
(3) White Balance adjustment method
Basically it uses the internal pattern but when internal
pattern is not possible, you can select HDMI input for
adjustment. Through the option at the most bottom part of
the Ez Adjust Menu 7.White Balance menu, you can select
NONE, INNER and HDMI, and the default is set to INNER.
When the adjustment cannot be done with the internal
pattern, you can select HDMI input for adjustment.
For manual adjustment, press the ADJ KEY of the
adjustment R/C to enter Ez Adjust 7.White-Balance, and
the pattern is automatically displayed. (When you set the
Option to INNER, the default is always set to INNER)
1) Connect the set according to the internal pattern or
HDMI input in accordance with 4.3.2 measuring device
connection diagram.
2) Set the Baud Rate of RS-232C to 115200. It is set to
115200 as default.
3) Connect the RS-232C Cable to the set.
4) Connect the HDMI Cable to the set. (Limited to the set
with HDMI option)
5) Select and adjust the model applicable to LA73A
chassis from the adjuster.
Caution) For automatic adjustment, RS-232C Command and
Chassis are commonly applied
- Wb 00 00 Start automatic adjustment of white balance
- Wb 00 10 Start gain adjustment (Internal pattern)
- Ja 00 ff Adjustment data
- Jb 00 c0
- …
- Wb 00 1f End gain adjustment
- * Adjust offset as necessary (wb 00 20(Start), wb 00 2f(End))
- Wb 00 ff End automatic adjustment of white balance
(Internal pattern disappears)
Caution) Adjustment map
012 3 4 5 67 8 9 A BCDEF
0 00FFFFFFFFFFFF001E6D010001010101
10 00 11 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 F6
012 3 4 5 67 8 9 A BCDEF
0020304000E1F008051001E3040803700
10 C4 8E 21 00 00 1C F1 27 00 A0 51 00 25 30 50 80
20 37 00 C4 8E 21 00 00 1C 00 00 00 00 00 00 00 00
30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 31
Color Analyzer
Full W hite Patter n
RS-232C
(Inner Pattern)
<Fig. 8> Connection diagram for internal pattern
<Fig. 9> Connection diagram for HDMI input
Remark
RS-232C Command
[CMD ID DATA]
wb
wb
wb
wb
wb
wb
00
00
00
00
00
00
00
10
1f
20
2f
ff
Start white balance adjustment
Start Gain adjustment(Internal white pattern)
End Gain adjustment
Start Offset adjustment (Internal white pattern)
End Offset adjustment
End white Balance adjustment (Internal pattern disappear)
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
jg
jh
ji
Cool
ja
jb
jc
Mid
RS-232C COMMAND
[CMD ID DATA]
CENTER
(DEFAULT)
jd
je
jf
00
00
00
192
192
192
127
127
127
Warm
Min Max
184
187
192
64
64
64
Cool
192
183
161
64
64
64
Mid
192
152
95
64
64
64
Warm

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
* White Balance adjustment (For automatic adjustment)
- Execute Power Only Key of the adjustment R/C to execute
automatic adjustment. Set the Baud Rate to 115200.
- Always start adjustment with “wb 00 00” and end
adjustment with “wb 00 ff”
- Adjust the offset if necessary.
(4) Adjustment of White Balance
(For manual adjustment)
- Required Equipment : When adjusting the plasma white
balance, use CS-1000 as the color analyzer (CA-210)
and channel 9 corrected of Matrix (corrected for White,
Red, Green, Blue) and the adjustment must be done in
accordance with the below White balance adjustment
coordinate.
1) Press the ADJ of adjustment adjustment remote control
to enter ‘EZ-ADJUST’.
2) Select 10.TEST PATTERN using the CH + / - KEY and
press the Enter KEY to execute a heat run for more
than 30 minutes.
3) Execute a Zero Calibration for CA-210 and put it at
distance of less than 10Cm from the LCD module
surface center during the adjustment.
4) Press the ADJ of adjustment R/C, select ‘7.White-
Balance’ of ‘Ez – Adjust’ and enter the adjustment mode
using the right key (G).
(When you press the Gbutton, the screen enters the full
white internal pattern..)
5) The adjustment is executed in 3 different white balance
of COOL, MEDIUM and WARM.
6) When the white balance is Cool,
Fix B Gain 192, fix R-Cut / G-Cut / B-Cut 64, and use R
Gain / G Gain to adjust the High Light.
When the white balance is Medium,
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64, and use G
Gain / B Gain to adjust the High Light.
When the white balance is Warm
Fix R Gain 192, fix R-Cut / G-Cut / B-Cut 64, and use G
Gain / B Gain to adjust High Light.
7) Use the +, - key for adjustment.
8) When the adjustment is completed, press the OK (A
KEY) button to move to the Ez –Adjust screen. Press
the ADJ KEY to exit the adjustment mode.
* Note : White Balance adjustment coordinate and white balance
- Standard white balance standard white balance
coordinate when using CS-1000 device
COOL : T=11000K, Δuv=0.000, x=0.276, y=0.283
MEDIUM : T=9300K, Δuv=0.000, x=0.285, y=0.293
WARM : T=6500K, Δuv=0.000, x=0.313, y=0.329
- Directed color coordinate when using CA-210 CH 9
Brightness: Full white 216gray
5-4. Check RS-232C operation
Press the Instart of adjustment R/C to enter the 4.Baud Rate
menu and set the Baud Rate to 115200 to check the 232-C
operation.
- 14 -
Color temperature Color analyzer Color coordinate
XY
COOL CA-210 0.276±0.002 0.283±0.002
MEDIUM CA-210 0.285±0.002 0.293±0.002
WARM CA-210 0.313±0.002 0.329±0.002

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 15 -
ATI
X260
ATI
X260
SIF
NTP3000
I2S
SPDIF
I2S
CVBS(NT Main)
DDR2
64MBx2
DDR2
64MBx2
Flex Bus
RGB 30 bit
TPA
Analog
Front
End USB 1.1
I2C Port0 I2C CH1
I2C CH2 I2C CH3
MTV415
Mic om
MTV415
Micom
USB (upgrade ready!!)
Dead IC when Standby
Dead IC when Standby
Vi d eo
Scaler
0
Vi d eo
Scaler
1 or 2
Alive IC when Standby
Alive IC when Standby Audio
Vid eo
TP
AV2 / L/ R
MNT Out L/ R
COMP1 L/ R
COMP2 L/ R
RGB L/ R
TP_IN1
AV1 AV2
AV1, Y/ C1
AV2, Y/ C2
Flash
(NOR 32MB
Flash
(NOR 32MB)
Latch
x2
Latchx2
24C512
24C512
Cable
A/NT LGDT330
VSB
LGDT3303
63LVD1023
63LVD1023 1080P
LVDS
Con.
1080P
LVDS
Con.
Dual
AV1 / L/ R GPIO
I2S
ATI
X250/ X260 ??
(# of MPEG decoder)
COMP2
RGB
CS8416
CS8416
HDMI SPDIF
I2S
I2S
MST3361
1HDMI +
1ADC
MST3361
1HDMI +
1ADC
RGB
HDMI1/ 2/ 3
SPDIF SPDIF
COMP1
Opt.
FRC94xyH
FRC94xyH
DDR1
16MB
DDR1
16MB
RGB odd
RGB even
120Hz
TPB
USB 1.1 USB(EMF)
PCI
3:1
Demux
3:1
Demux
24C16
24C16
Air
3:1
Demu
3:1
Demux
MSP4450K
MSP4450K
I2S
SIF
TROUBLESHOOTING
1. VIDEO
(1) NO OSD(FHD)

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 16 -
Check L729 Check
Power conn ector Replace Power board
Check THC63LVD1023 (IC601)
#9(DE), #15(Clk), #7(Hsync),
#8(Vsync)
Check X260 (IC101)
Check P600 #47(DISP_EN),
#33(TXAC-) , #32(TXAC+) ,
#17(TXBC-) , #16(TXBC+)
Check THC63LVD1023 (IC601)
Check L VDS Cable
Check PDP/LCD Module
Control bo ard
1 2 3 4 5
1 : _Check the L729 HIGH.
_Check Power connector.
Y
NY
Y Y Y
Y
N N
2 : _Check the THC63LVD1023 (IC601) input signal
#(Clk) : 74.25MHz
3 : _Check th e P600 input sig nal
#47(DISP_EN) : #33 (TXAC-) : 74.25MHz
3.3V GND
#32 (TXAC+) :
4 : _Check the LVDS Cable 5 : _Ch eck the PDP Modul e control bo ard
#17 (TXBC-) :
#16 (TXBC+) :
74.25MHz
74.25MHz
74.25MHz

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 17 -
EXT
1/2
X260
TP A
Comp 1/2
RGB
CVBS
TP C
TP B / 656
AT/NT/
TUNER LGDT
3303
VSB1/QAM TP
MST
3361 HS,VS
DVI
HS,VS
YCbCr2 YCbCr or RGB
FRC9445H
RGB
CVBS
YCbCr1
DVO
Y/C1, Y/C2
Y/C1, Y/C2
AV1/2
AV1/2
HDMI
1/2/3 TMDS341A
Check A nten na Cable
Check Tu ner
5V, Video out
Check X260 i npu ts
M_TU_CVBS(C2117)
Check CVBS Video Path
1 : _Check Tun ers Vcc and Video out
(2) VIDEO PATH
(3) RF MODE

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 18 -
EXT
1/2
X260
TP A
Comp 1/2
RGB
CVBS
TP C
TP B / 656
AT/NT/
TUNER LGDT
3303
VSB1/QAM TP
MST
3361 HS,VS
DVI
HS,VS
YCbCr2 YCbCr or RGB
FRC9445H
RGB
CVBS
YCbCr1
DVO
Y/C1, Y/C2
Y/C1, Y/C2
AV1/2
AV1/2
HDMI
1/2/3 TMDS341A
(4) DTV / CADTV
Check A ntenna Cable
Check Tuner(TU600), 5V, IF out
Check LG DT3303(IC604) inputs
power pin s, Osc(25Mhz), IF pin
Check LG DT3303 Outputs
3._ Check X 260 Input ( CLK, SOP, Valid, Error, Data)
Check X260 INPUT CLK, SOP,
Valid, Error, Data

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 19 -
EXT
1/2
X260
TP A
Comp 1/2
RGB
CVBS
TP C
TP B / 656
AT/NT/
TUNER LGDT
3303
VSB1/QAM TP
MST
3367 HS,VS
DVI
HS,VS
YCbCr2 YCbCr or RGB
FRC9445H
RGB
CVBS
YCbCr1
DVO
Y/C1, Y/C2
Y/C1, Y/C2
AV1/2
AV1/2
HDMI
1/2/3 TMDS341A
5 : _Check the MST3361(IC402) Output Signals
(Vsync) :
(DE) :
(Clk) :
(Hsync)
59.94Hz
Freq uenc y : Dif ferent acc ordi ng to
form at ! !
(Data) :
4 : _Check MS T3361(IC402) Power pins, Input Signals, Signa l Shape is S ame (abo ve)
6 : _Check X 260 (IC101) Inputs
_Signal shape is sa me (above)
Check Si gnal format
(sup port ed for mat?)
Check S TMAV335(IC403) Power
Pins, Comp1(#2,#5,#11),
Comp2(#3,#6,#10), RGB(#9,#4,#7)
RGB_V,H(R400,R401)
Check S TMAV335(IC403) outputs
#14(MUX_OUT_Y),
#13(MUX_OUT_Pb),
#8(MUX_OUT_Pr)
Check M ST3361(IC402)
OSC, Pow er pin s,#44( Y_in),
#41(Cb_in ),#46(Cr_in)
#37(H),#38(V)
1
2
3
Check M ST3361(IC402) Outputs
V-out (#99) , H-out (#98) , Clock
(#96) , Data (30Bit) , DE(#97)
Check X260 ( IC101) Inpu ts
MST3361_HS(#T6) ,
MST3361_VS(#T5) , Clock ( #P3) ,
Data (30Bit) , DE(#U6)
4
5
6
3 : Check STMAV335(IC403) outputs
Signal shape is sa me (above)
1. Check Si gnal f ormat (ref. owenrís manual)
2. Check STM AV335(IC403) Pow er Input Signal
(5) COMPONENT / RGB

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 20 -
EXT
1/2
X260
TP A
Comp 1/2
RGB
HDMI
1/2/3
CVBS
TP C
TP B / 656
AT/NT/
TUNER LGDT
3303
VSB1/QAM TP
MST
3367 HS,VS
DVI
HS,VS
YCbCr2 YCbCr or RGB
FRC9445H
RGB
CVBS
YCbCr1
DVO
Y/C1, Y/C2
Y/C1, Y/C2
AV1/2
AV1/2
TMDS341A
1 : _Check HDCP Error
_Retr y power off and on (TV or STB/DVD )
_Check MST3361(IC402) HDCP IIC line (#69,#70)
2 : _Check EDID Download
(RX0C-,RX0C+) : Freq uenc y : Dif ferent acc ordi ng to
form at ! !
4 : _Check MST3361(IC402) Outputs
SCL :
SDA :
3 : _ MST3361(IC402) inputs
(RX1C-,RX1C+) :
(Vsync) :
(DE) :
(Clk) :
(Hsync)
59.94Hz
Freq uenc y : Dif ferent acc ordi ng to
form at ! !
(Data) :
5 : _Check X 260 (IC101) Inputs
_Sign al sh ape is same (abo ve)
Snow noi se (Whit e dot) ? Pow er off and on
(TV or STB/DVD)
Video is normal & No Sound ?
Check HDCP Power Pin (IC404),
MST3361(IC402) IIC(#69,#70)
Check M ST3361(IC402) inputs
Pow er, Osc
#25,#26(RX1C-,RX1C+),
#14,#15(RX0C-,RX0C+)
Re-downloa d
EDID(IC406/407/408)
Check M ST3361(IC402) Outputs
V-out (#99) , H-out (#98) ,
Clock ( #96) , Data
1
2
3
4
N
Y
N
Y
Y
Check X260 ( IC101) Inpu ts
MST3361_HS(#T6) ,
MST3361_VS(#T5) , Clock ( #P3) ,
Data (30Bit) , DE(#U6)
5
(6) HDMI / DVI