LG PA11K User manual

PLASMA TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : PA11K
MODEL : 42PT250 42PT250-TA
North/Latin A erica http://aic.lgservice.co
Europe/Africa http://eic.lgservice.co
Asia/Oceania http://biz.lgservice.co
Internal Use Only
Printed in Korea
P/NO : MFL67121901 (1102-REV00)

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Only or training and service purposes
CONTENTS
CONTENTS ............................................................................................................................... 2
SAFETY PRECAUTIONS ...........................................................................................................3
SPECIFICATION.........................................................................................................................4
ADJUSTMENT INSTRUCTION ..................................................................................................6
BLOCK DIAGRAM ...................................................................................................................14
EXPLODED VIEW ..................................................................................................................15
CIRCUIT DIAGRAM .....................................................................................................................

- 3 - LGE Internal Use OnlyCopyright ©2011 LG Electronics Inc. All rights reserved.
Only or training and service purposes
SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special sa ety-related characteristics. These parts are identi ied by in
the Schematic Diagram and Exploded View.
It is essential that these special sa ety parts should be replaced with the same components as recommended in this manual to
prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modi y the original design without permission o manu acturer.
G n ral Guidanc
An isolation Transform r should always b us d during the
servicing o a receiver whose chassis is not isolated rom the AC
power line. Use a trans ormer o adequate power rating as this
protects the technician rom accidents resulting in personal injury
rom electrical shocks.
It will also protect the receiver and it's components rom being
damaged by accidental shorts o the circuitry that may be
inadvertently introduced during the service operation.
I any use (or Fusible Resistor) in this monitor is blown, replace it
with the speci ied.
When replacing a high wattage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm away rom PCB.
Keep wires away rom high voltage or high temperature parts.
Due to high vacuum and large sur ace area o picture tube,
extreme care should be used in handling th Pictur Tub .
Do not li t the Picture tube by it's Neck.
L akag Curr nt Cold Ch ck(Ant nna Cold Ch ck)
With the instrument AC plug removed rom AC source, connect
an electrical jumper across the two AC plug prongs. Place the
AC switch in the on position, connect one lead o 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.
I 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 in inite.
An other abnormality exists that must be corrected be ore the
receiver is returned to the customer.
L akag Curr nt Hot Ch ck (S b low Figur )
Plug the AC cord directly into the AC outlet.
Do not us a lin Isolation Transform r during this ch ck.
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 or 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 o the limits speci ied, there is
possibility o shock hazard and the set must be checked and
repaired be ore it is returned to the customer.
L akag Curr nt Hot Ch ck 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

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Only for training an service purposes
SPECIFICATION
NOTE : Specifications an others are subject to change without notice for improvement .
VApplication Range
This spec is applie to PDP TV use PA11K Chassis.
V Specification
Each part is teste as below without special appointment.
(1) Temperature : 25 °C ± 5 °C (77 °F ± 9 °F), CST : 40 ± 5
(2) Relative Humi ity: 65 % ± 10 %
(3) Power Voltage: Stan ar Input voltage (100 V - 240 V ~, 50 / 60 Hz)
* Stan ar Voltage of each pro uct is marke by mo els.
(4) Specification an performance of each parts are followe each rawing an specification by part number in accor ance with
SBOM.
(5) The receiver must be operate for about 20 minutes prior to the a justment.
VTest Method
(1) Performance : LGE TV test metho followe .
(2) Deman e other specification
Safety : CE, IEC specification, EMC : CE, IEC
VModule Specification
(1) 2D - 42” HD
No Item Specification Remark
1 Display Screen Device 106 cm (42 inch) wi e Color Display Mo ule PDP
2 Aspect Ratio 16:9
3 PDP Mo ule PDP42T3####,
RGB Close (Well) Type, Glass Filter (38%)
Pixel Format: 1024 horiz. By 768 ver
4 Operating Environment 1) Temp. : 0 eg ~ 40 eg
2) Humi ity : 20 % ~ 80 %
5 Storage Environment 3) Temp. : -20 eg ~ 60 eg LGE SPEC
4) Humi ity : 10 % ~ 90 %
6 Input Voltage AC 100 V ~ 240 V, 50 / 60 Hz Maker LG
Mo el Name
42PT250-TA
Bran
LG
Market
Australia, New Zealan , Malaysia, In onesia, Singapore
South Africa, Israel, Iran, Vietnam, Kenya, Non-EU analog
Mo el Name
42PT250-TA
Bran
Safety : IEC/EN60065
EMI : CISPR13
Market
Australia, New Zealan , Malaysia, In onesia, Singapore
South Africa, Israel, Iran, Vietnam, Kenya, Non-EU analog

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Only or training and service purposes
VMod l G n ral Sp cification
No Item Speci ication Remarks
1 Market Albania, Austria, Belgium, Bosnia, Bulgaria, Coratia, 36 Country
Czech, Denmark, Estonia, Finland, France, Germany,
Greece, Hungary, Ireland, Italy, Kazakhstan, Latvia,
Lithuania, Luxembourg, Morocco, Netherlands, Norway,
Poland, Portugal, Romania, Russia, Serbia, Slovenia,
Spain, Sweden, Slovakia, Switzerland, Turkey, Ukraine,
UK
2 Broadcasting system 1) PAL/SECAM BG EU (PAL Market)
2) PAL/SECAM DK
3) PAL Ⅰ/Ⅱ
4) SECAM L/L’
5) DVB T
6) DVB C
3 Receiving system Analog : Upper Heterodyne
Digital : COFDM
4 Scart Jack (1EA) PAL, SECAM
5 Video Input (1EA) PAL, SECAM, NTSC Side AV
6 Component Input (1EA) Y/Cb/Cr, Y/ Pb/Pr
7 RGB Input RGB-PC Analog (D-Sub 15Pin)
8 HDMI Input (4EA) HDMI-PC HDMI/DVI,HDMI2, HDMI3
HDMI-DTV
9 Audio Input (3 EA) RGB/DVI Audio, Component, AV L/R Input
10 SPDIF Out(1 EA) SPDIF Out
11 USB(1EA) For SVC, S/W Download, DivX
12 LAN For UK models

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Only or training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Rang
This spec sheet is applied to all o the PDP TV with PA11K
chassis.
2. Sp cification
(1) The adjustment is according to the order which is
designated and which must be ollowed, according to the
plan which can be changed only on agreeing.
(2) Power adjustment : Free Voltage. (100 V ~ 240 V, 50 Hz /
60 Hz.)
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Speci ication Standard.
(5) Reserve a ter operation: Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity 65 % ± 10 %
Input voltage : 220 V, 60 Hz.
(6) Adjustment equipments : Color Analyzer (CA-210 or CA-
110), DDC Adjustment Jig equipment, SVC remote
controller.
(7) The receiver must be operated or about 5 minutes prior to
the adjustment when module is in the circumstance o over
15 °C
- In case o keeping module is in the circumstance o 0 °C,
it should be placed in the circumstance o above 15 °C
or 2 hours
- In case o keeping module is in the circumstance o below
-20 °C, it should be placed in the circumstance o above
15 °C or 3 hours,.
OA ter RGB Full White in HEAT-RUN Mode, the receiver
must be operated prior to the adjustment.
OEnter into HEAT-RUN MODE
1) Press the POWER ON KEY on R/C or adjustment.
2) OSD display and screen display PATTERN MODE.
- Set is activated HEAT run without signal generator in this
mode.
- Single color pattern ( WHITE ) o HEAT RUN MODE uses
to check panel.
- Caution : I you turn on a still screen more than 20
minutes (Especially digital pattern, cross hatch pattern),
an a ter image may be occur in the black level part o the
screen.
(8) Push The “IN STOP KEY” - For memory initialiLAtion.
Case1 : So tware version up
1) A ter downloading S/W by USB , TV set will reboot
automatically
2) Push “In-stop” key
3) Push “Power on” key
4) Function inspection
5) A ter unction inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1) When TV set is entering on the assembly line, Push
“In-stop” key at irst.
2) Push “Power on” key or turning it on.
-> I you push “Power on” key, TV set will recover
channel in ormation by itsel .
3) A ter unction inspection, Push “In-stop” key.
3. Main PCB ch ck proc ss
* APC - A ter Manual-Insert, executing APC
3-1. Boot fil Download
(1) Execute ISP program “Mstar ISP Utility” and then click
“Con ig” tab.
(2) Set as below, and then click “Auto Detect” and check “OK”
message
I “Error” is displayed, Check connection between computer,
jig, and set.
(3) Click “Read” tab, and then load download ile (XXXX.bin)
by clicking “Read”
(4) Click “Connect” tab. I “Can’t” is displayed, Check
connection between computer, jig, and set.
(5) Click “Auto” tab and set as below.
(6) Click “Run”.
(7) A ter downloadng, check “OK” message.

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4. USB DOWNLOAD
(*. pk fil download)
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update ile in USB Stick
- I your downloaded program version in USB Stick is Low,
it didn’t work.
But your downloaded version is High, USB data is
automatically detecting
(3) Show the message “Copying iles rom memory”
(4) Updating is staring.
(5) Updating Completed, The TV will restart automatically.
(6) I your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* I downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. i all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* A ter downloading, have to adjust TOOL OPTION again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each o models has their number.)
(4) Completed selecting Tool option.
5. ADC Proc ss
5-1. ADC
- Enter Service Mode by pushing “ADJ”key,
- Enter Internal ADC mode by pushing “G” key at “5. ADC
Calibration”
* Caution: Using ‘power on’ button o the Adjustment R/C , power
on TV.
Model Module Tool Tool Tool Tool Tool
option1 option2 option3 option4 option5
50PZ550-ZA 50R3 36928 37966 54144 26956 32
60PZ550-ZA 60R3 49216 37966 54144 26956 32
60PZ250-ZA 60R3 49280 37966 54144 26892 32
50PZ250-ZA 50R3 36992 37966 54144 26892 32
50PW450-ZA 50T3 37056 37966 54144 26892 32
42PW450-ZA 42T3 24768 37966 54144 26892 32
50PV350-ZA 50R3 37216 21582 54144 26892 32
50PT350-ZA 50T3 37312 21582 54144 26892 32
42PT350-ZA 42T3 25024 21582 54144 26892 32
60PV250-ZA 60R3 49536 21582 54144 26892 32
42PT250-ZA 42T3 25088 21582 54144 26892 32
60PV250-TA 60R3 49536 22934 54144 26892 32
50PV250-TA 50R3 37248 22934 54144 26892 32
50PW350-TA 50T3 37088 39318 54144 26956 32
42PW350-TA 42T3 24800 39318 54144 26956 32
60PZ550-TA 50R3 49216 39318 54144 26956 32
50PZ550-TA 50R3 36928 39318 54144 26956 32
50PT250-TA 50T3 37376 22934 54144 26892 32
42PT250-TA 42T3 25088 22934 54144 26892 32
50PZ550T-ZA 50R3 36928 37966 54144 29001 544
50PZ550T-ZA 50R3 36928 37966 54144 29004 544
60PZ250T-TA 60R3 49280 37966 54144 28940 544
50PZ250T-ZA 50R3 36992 37966 54144 28940 544
50PW450T-ZA 50T3 37056 37966 54144 28940 544
42PW450T-ZA 42T3 24768 37966 54144 28940 544
50PV350T-ZA 50R3 37216 21582 54144 28940 544
60PV250T-ZA 60R3 49536 21582 54144 28940 544

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* ADC Calibration Protocol (RS232)
Adjust Sequence
- aa 00 00 [Enter Adjust Mode]
- xb 00 40 [Component1 Input (480i)]
- ad 00 10 [Adjust 480i Comp1]
- xb 00 60 [RGB Input (1024*768)]
- ad 00 10 [Adjust 1024*768 RGB]
- aa 00 90 End Adjust mode
* Required equipment : Adjustment R/C.
6. Function Ch ck
6-1. Ch ck display and sound
- Check Input and Signal items. (c . work instructions)
(1) TV
(2) AV (SCART1/SCART2/ CVBS)
(3) COMPONENT (480i)
(4) RGB (PC : 1024 x 768 @ 60hz)
(5) HDMI
(6) PC Audio In
* Display and Sound check is executed by Remote
controller.
* Caution : Not to push the INSTOP KEY a ter completion i the
unction inspection.
7. Total Ass mbly lin proc ss
7-1. POWER PCB Assy voltag adjustm nt
(Vs voltag adjustm nt)
O Required Equipment or adjustment
- D.M.M
O Condition or adjustment
- No signal with the snow noise in RF mode)
7-2. Adjustm nt Pr paration
- Required Equipment
ORemote controller or adjustment
O Color Analyzer ( CS-1000, CA-100,100+,CA-210 or same
product : CH 10 (PDP)
* Please adjust CA-210, CA-100+ by CS-1000 be ore
measuring
OAuto W/B adjustment instrument(only or Auto adjustment)
O 9 Pin D-Sub Jack(RS232C) is connected to the AUTO W/B
EQUIPMENT.
B for Adjust of Whit Balanc , Pl as pr ss POWER ONLY
k y
Adjust Process will start by execute RS232C Command.
O Color temperature standards according to CSM and Module
OCS-1000/CA-100+/CA-210(CH 10)
White balance adjustment coordinates and color temperature.
* Connecting picture o the measuring instrument (On
Automatic control)
- Inside PATTERN is used when W/B is controlled. Connect
to auto controller or push Adjustment R/C POWER-ON
->Enter the mode o White-Balance, the pattern will come
out.
* Auto-control inter ace and directions
(1) Adjust in the place where the in lux o light like loodlight
around is blocked. (Illumination is less than 10ux).
(2) Measure and adjust a ter sticking the Color Analyzer (CA-
100+, CA210 ) to the side o the module.
(3) Aging time
A ter aging start, keep the Power on (no suspension o
power supply) and heat-run over 5 minutes
O Auto adjustment Map(RS-232C)
RS-232C COMMAND
[ CMD ID DATA ]
Wb 00 00 White Balance Start
Wb 00 White Balance End
CSM PLASMA
Cool 11000K
Medium 9300K
Warm 6500K
CSM Color Coordinate Temp ±Color Coordinate
xy
Cool 0.276 0.283 11000K 0.002
Medium 0.285 0.293 9300K 0.002
Warm 0.313 0.329 6500K 0.002
RS-232C COMMAND CENTER
[CMD ID DATA] MIN (DEFAULT) MAX
Cool Mid Warm Cool Mid Warm
R Gain jg Ja jd 00 192 192 192 192
G Gain jh Jb je 00 192 192 192 192
B Gain ji Jc j 00 192 192 192 192
R Cut 64 64 64 128
G Cut 64 64 64 128
B Cut 64 64 64 128
NO Item CMD 1 CMD 2 Data 0
Enter Adjust A A 0 0 When trans er the
Adjust ‘Mode In’‘Mode In’
Mode Carry the
command.
ADC ADC A D 1 0 Automatically
adjust Adjust adjustment
(The use o
a internal pattern)

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Only or training and service purposes
* Caution
- Color Temperature : COOL, Medium, Warm.
- One o R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range
o Module)
* Manual W/B process using adjusts Remote control.
(1) A ter enter Service Mode by pushing “ADJ” key,
(2) Enter White Balance by pushing “G” key at “. White
Balance”
(3) Stick the sensor to the center o the screen and select
each items(Red/Green/Blue Gain) using D/E (CH +/-) key
on R/C.
(4) Adjust R/G/B Gain using F/G (VOL +/-) key on R/C.
(5) Adjust three modes all(Cool/Medium/Warm) : Fix the one
o R/G/B Gain and Change the others.
(6) When the adjustment is completed, Enter “COPY ALL”.
(7) Exit adjustment mode using EXIT key on R/C.
* A ter You inish all adjustments, Press °∞In-start°± button
and compare Tool option and Area option value with its
BOM, i it is correctly same then unplug the AC cable.
I it is not same, then correct it same with BOM and unplug
AC cable.
For correct it to the model’s module rom actory JIG model.
* Push The “N STOP KEY” a ter completing the unction
inspection. And Mechanical Power Switch must be set “ON”.
* To check the coordinates o White Balance, you have to
measure at the below conditions.
Picture mode : Vivid, Energy Saving : O , Below the
Advanced control, Dynamic Contrast : O , Dynamic Colour :
O
Colour Temp.
-> Picture Mode change : Vivid ? Vivid(User)
7-3. DPM op ration confirmation
(Only Apply for MNT Mod l)
* Check i Power LED Color and Power Consumption operate
as standard.
(1) Set Input to RGB and connect D-sub cable to set
(2) Measurement Condition: (100~240V@ 50/60Hz)
(3) Con irm DPM operation at the state o screen without
Signal
7-4. DDC EDID Writ (RGB 128Byt )
-> Not us d any mor , Us Auto D/L
(1) Connect D-sub Signal Cable to D-Sub Jack.
(2) Write EDID DATA to EEPROM (24C02) by using DDC2B
protocol.
(3) Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to
Insert Process in advance.
7-5 DDC EDID Writ (HDMI 256Byt )
-> Not us d any mor , Us Auto D/L
(1) Connect HDMI Signal Cable to HDMI Jack.
(2) Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
(3) Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to
Insert Process in advance.
7-6. EDID DATA
(1) All Data : HEXA Value
(2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum
7-7. EDID DATA Auto Download
(1) Press Adj. key on the Adj. R/C,
(2) Select EDID D/L menu.
(3) By pressing Enter key, EDID download will begin
(4) I Download is success ul, OK is display, but I Download is
ailure, NG is displayed.
(5) I Download is ailure, Re-try downloads.
*Caution: Never connect HDMI & D-sub Cable when EDID
downloaded.
O Edid data and Model option download (RS232)
NO Item CMD 1 CMD 2 Data 0
Enter download A A 0 0 When trans er the
download ‘Mode In’‘Mode In’
Mode Carry the
command.
EDID data download A E 00 10 Automatically
Model download
option (The use o
download a internal pattern)

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7-8. Manual Download
* Caution
* Use the proper signal cable or EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
* Caution:
- Never connect HDMI & D-sub Cable at the same time.
- Use the proper cables below or EDID Writing.
- Download HDMI1, HDMI2 separately because HDMI1 is
di erent rom HDMI2.
7-9. EDID DATA
(1) 2D - HD RGB EDID data
(2) 2D - HD HDMI1 EDID data
(3) 2D - HD HDMI2 EDID data
(4) 2D - HD HDMI3 EDID data
ⓐVender ID
O Checksum: Changeable by total EDID data.
No. Item Condition Hex Data
1 Manu acturer ID GSM 1E6D
2 Version Digital : 1 01
3 Revision Digital : 3 03