LG 50PK550 User manual

PLASMA TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : PA01A
MODEL : 50PK550 50PK550-AA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
Printed in Korea
P/NO : MFL62882003(1011-REV01)
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CONTENTS
CONTENTS ............................................................................................................................... 2
SAFETY PRECAUTIONS ...........................................................................................................3
SPECIFICATION.........................................................................................................................4
ADJUSTMENT INSTRUCTION ..................................................................................................6
TROUBLESHOOTING GUIDE..................................................................................................11
BLOCK DIAGRAM ...................................................................................................................22
EXPLODED VIEW ...................................................................................................................23
SVC. SHEET ................................................................................................................................
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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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SPECIFICATIONS
NOTE : Speci ications and others are subject to change without notice or improvement .
VApplication Rang
This spec is applied to the PDP TV used PA01A Chassis.
V Sp cification
Each part is tested as below without special appointment.
1) Temperature : 25±5°C (77±9°F), CST : 40±5
2) Relative Humidity: 65±10%
3) Power Voltage: Standard Input voltage (100-240V~, 50/60Hz)
* Standard Voltage o each product is marked by models.
4) Speci ication and per ormance o each parts are ollowed each drawing and speci ication by part number in accordance with
SBOM.
5) The receiver must be operated or about 20 minutes prior to the adjustment.
VT st M thod
1) Per ormance : LGE TV test method ollowed.
2) Demanded other speci ication
Sa ety : CB speci ication
EMC : CISPR 13 speci ication
VT st M thod
No Item Speci ication Remark
1. Broadcasting system PAL-B/B, DTV : DVB-T
2. Available Channel 1)DTV
-.VHF : 6 ~ 12
-.UHF : 27 ~ 69
2) ATV
-.VHF : 0 ~ 20
-.UHD : 21 ~ 75
3. Tuner IF 1) PAL : 38.90MHz(Picture),
34.40MHz(Sound)
2) DVB-T : 36.125MHz
4. Input Voltage AC 100 ~ 240 V, 50/60Hz Mark : 240V, 50Hz
5. Screen Size 42 inch XGA(1024 x 768)
50 inch Wide(1365 x 768)
50 inch Wide(1920 ×1080)
60 inch Wide(1920 ×1080)
6. Aspect Ratio 16:9
7. Module 42/50T1, 50/60R1
8. Operating Environment 1) Temp : 0 ~ 40 deg
2) Humidity : ~ 80 %
9. Storage Environment 1) Temp : -20 ~ 60 deg
2) Humidity : ~ 85 %
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VChroma & Brightn ss
(1) FHD Module (50R1 Module, 38% Glass Filter )
* Warning : When measuring ollowing test items, Dynamic Colour & Dynamic Contrast should be turned o .
No Item Min Typ Max Unit Remark
1. White peak brightness 236 284 - cd/m2(*) Peak Brightness Mode
-1/100 white Window pattern
(Typically 1% Window size)
-100IRE (255Gray)
-Picture: Vivid (Medium)
-Input: HDMI-PC(1920*1080 60Hz)
*Peak Brightness Condition may Slightly
di erent between sets.
140 150 -25/100 white Window pattern
2. White average brightness 44 50 cd/m2- 100% Window White Pattern
- 100IRE(255Gray)
- Picture: Vivid(Medium )
3. Brightness uni ormity -10 0 +10 %
- 85IRE(216Gray) 100% Window White Pattern
- Picture: Vivid(Medium)
4. Color White X 0.270 0.285 0.300 - White : 85IRE(216Gray) 100% Window
Coordinate Y 0.278 0.293 0.303 White Pattern
Red X 0.635 0.640 - - R/G/B : 100IRE(255Gray) 100% Window
Y 0.318 0.333 0.345 White Pattern
Green X 0.242 0.300 0.305 - Picture: Vivid(Medium )
Y 0.595 0.600 - - 100% Window
Blue X - 0.150 0.158
Y - 0.065 0.075
5. Color coordinate uni ormity -0.01 Average +0.01 - 85IRE 100% Window White Pattern
- Picture: Vivid(Medium)
6. Contrast ratio at dark room 100k: 1 1,000k: 1 -1/100 white window pattern(Peak mode)
-100IRE(255Gray)
-Picture: Vivid(Medium)
-Input: HDMI-PC (1920*1080 60Hz)
7. Color Cool X 0.261 0.276 0.291 - 85IRE 100% Window White Pattern
Temperature Y 0.268 0.283 0.298 Warm : ColorGamut => WIDE
Medium X 0.270 0.285 0.300 Cool : Color temperature C30
Y 0.278 0.293 0.308 Meduum : Color temperature 0
Warm X 0.298 0.313 0.328 Warm : Color temperature W30
Y 0.314 0.329 0.344
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ADJUSTMENT INSTRUCTION
1. Application Rang
This spec. sheet is applied to all o the PA01A chassis
manu actured at LG TV Plant all over the world.
2. D signation
Caution: The module keeping condition
1. The module keeping condition: The normal temperature
condition(more than 15°C)
-> Immediately the line supply.
2. The module keeping condition: 0°C
-> The module must be kept or more than 2 hours at the
normal temperature.
3. The module keeping condition: -20°C
-> The module must be kept or more than 3 hours at the
normal temperature.
4. The case o Gu-mi actory at the winter season.
-> The module must be kept or more than 5 minutes at the
heating zone(40°C~45°C).
(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) I there is no speci ic designation, the adjustment must be
per ormed in the circumstance o 25 ±5∞C o temperature
and 65±10% o relative humidity.
(3) The input voltage o the set must keep 100~240V,
50/60Hz.
(4) Input signal Unit: Product Speci ication Standard.
(5) The set must be operated or about 5 minutes prior to the
adjustment. .
* A ter turning on RGB Full Window pattern in HEAT-RUN
Mode, the receiver must be operated.
* Enter into HEAT-RUN MODE
1) Press the ‘POWER ON’ button on R/C or adjustment.
2) Press the ‘ADJ’ button on R/C and enter EZ ADJUST
- Select "7. Test Pattern" by using F/G(CH +/-) and
press ENTER(V)
- Select "White" by using F/G(VOL +/-) and press
ENTER(V)
OSet heat run should be activated without a signal generator.
OSingle color patterns (RED / BLUE / GREEN) o HEAT RUN
MODE are used to check a plasma panel.
OCaution: I you turn on a still screen more than 20 minutes
(Especially digital pattern, cross hatch pattern), an a ter
image may be made in the black level part o the screen.
Caution
- Use 'power on' button o a service R/C to power on TV set.
- Do not connect any external input cable i there is no any
speci ics.
3. Updat S/W using auto download
through th USB.
Caution: S/W version o USB ile (xxx.epk) must be bigger than
one which is downloaded previously.
1. Insert the USB stick to the USB socket
2. A downloaded ile in USB stick will be detected
automatically.
3. I S/W version o USB ile (xxx.epk) is bigger than one which
is downloaded previously, the message, “Copying iles rom
memory”, will appear.
4. I an update procedure was completed, TV set will be turned
o and on automatically.
5. I TV set is turned on, check an updated version.
* I a downloaded version is more bigger than one o which
TV set had, TV set can lost channel data. In this case,
you have to scan channels again.
4. Aft r downloading S/W, adjust
TOOL OPTION.
(1) Push "IN-START" button on a service R/C.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Put the number o a below table in order o a su ix o the
“Tool Option(X)”.
(Each model has a di erent number.)
Model Tool Option1 Tool Option2 Tool Option3 Tool Option4
42PJ350-AB 25024 2632 51404 4384
42PJ650-AA 24896 2632 51408 4384
50PJ350-AB 37312 2632 51404 4384
50PJ650-AA 37184 2632 51408 4384
50PK550-AA 36992 2632 51404 4384
60PK550-AA 49280 2632 51404 4384
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5. ADC Calibration Proc dur
(1) Input the component (480i/Horizontal Color Bar) signal to a
TV set.
1) Input Signal Timing : Component 480i
(Other external connection is unnecessary except the
component be ore executing ADC calibration.)
2) Input Signal Pattern
@ MODEL: 209 in Pattern Generator(480i Mode)
@ PATTERN : 65 in Pattern Generator(MSPG-925
SERISE)
(2) Push “ADJ” button on a service R/C.
(3) Enter internal ADC mode by selecting ‘5. ADC Calibration’.
(4) I you select ‘Start’ on a dialog box o the screen, ADC
calibration will be begun.
Caution: Don’t connect any external input cable except the
component input(480i/Horizontal_Color_Bar) to adjust
ADC calibration
OAuto ADC Calibration Map(RS-232C)
# 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
6. EDID Download Proc dur
(1) Push “ADJ” button on a service R/C.
(2) Enter EDID auto download mode by selecting ‘8. EDID
D/L’.
(3) I you select ‘Start’ on a dialog box o the screen, EDID
download will be begun automatically.
(4) Press ‘EXIT’ button on a service R/C.
(5) EDID Data
1) HDMI (FHD Models, 256 bytes)
2) RGB (HD Models, 128 bytes)
OEDID Data detailing (ⓐ, ⓑ, ⓒ, ⓓ, ⓔ, ⓕ)
<Horizontal Color Bar pattern>
NO Item CMD1
AA00
01
D
A
CMD2 Data0
Enter
Adjust MODE
Adjust
‘Mode In’
When trans er the ‘Made
In’, Carry the command.
Automatically adjustment
ADC
Adjust
ADC Adjust
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ⓐPro uct ID
ⓑSerial No
=> Controlle on pro uction line
ⓒMonth, Year
=> Controlle on pro uction line:
ⓓMo el Name
ⓔChecksum
=> Changeable by total EDID ata
ⓕHDMI Port No.
OAuto EDID Downloa Map(RS-232C)
7. POWER Supply Unit PCB Ass’y
Va/Vs Voltage Adjustment
Caution: Both Vs an Va voltage a justment are necessary.
7 1. Va/Vs Adjustment Procedure
(1) Connect positive(+) terminal of DMM to Vs/Va pin, connect
negative(-) terminal to GND.
(2) Turning ‘Vs/Va A just’ an a just Vs/Va voltages to a
value which is written on a right/top label of a mo ule.
( eviation ; ±0.5V)
Caution
- Each Power Supply Unit PCB assembly must be checke by
check JIG set. (Because power PCB Ass’y amages to PDP
Mo ule, especially be careful)
- Set up “RF mo e(noise)” before a voltage a justment.
- Test equipment: DMM 1EA
8. White Balance Adjustment
Caution: Press the POWER ON KEY on R/C before W/B
a justment.
OTest Equipment
Color Analyzer (CS-1000, CA-100+(CH.10), CA-210(CH.10))
OPlease a just CA-100+ / CA-210 by CS-1000 before
measuring
You shoul use Channel 10 which is Matrix compensate
(White, Re , Green, Blue revise ) by CS-1000 an a just
in accor ance with White balance a justment coor inate.
8 1. Color Temperature Standards According
to CSM and Module(TBD)
MODEL EDID MODEL PRODUCT_ID FUNCTION
ALL Mo el LG DTV 0001(0x01, 0x00) Analog
ALL Mo el LG DTV 0001(0x01, 0x00) Digital
FHD HD
HDMI1 0xE2 0xB4 0xAF 0xE2
HDMI2 0xE2 0xA4 0xAF 0xE2
HDMI3 0xE2 0x94 0xAF 0xE2
HDMI4 - - - -
RGB 0x62 0x2F
NO Item CMD1
AA00
1000
E
A
CMD2 Data0
Enter
ownloa
MODE
Downloa
‘Mo e In’
When transfer the ‘Ma e
In’, Carry the comman .
Automatically ownloa
(The use of a internal
Data)
Downloa
EDID ata an
Mo el option
ownloa
6500KWarm
9300KMe ium
11000KCool
PLASMACSM
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8 2. Change Target Luminance and Range
of the Auto Adjustment W/B Equipment
8 3. White Balance Adjustment Coordinate
and Color Temperature
8 4. White Balance Adjustment Coordinate
and Color Temperature
[PC (for communication through RS-232C) ? UART Bau
rate : 115200 bps
8 5. Automatic W/B Adjustment
(1) Internal PATTERN shoul be use when W/B is a juste .
Connect to auto controller like below.
(2) Start White-Balance a justment, then the full white win ow
pattern will appear on the screen.
(3) A just in the place where the influx of light like floo light
aroun is blocke .
(illumination is less than 10ux).
(4) Measure an a just after sticking the Color Analyzer (CA-
100+, CA210 ) to the si e of the mo ule.
OAuto W/B A justment Map(RS-232C)
RS-232C COMMAND
[ CMD ID DATA ]
Wb 00 00 White Balance Start
Wb 00 FF White Balance En
8 6. Manual W/B Adjustment
(1) Execute the zero calibration of CA-100+ / CA-210.
(2) Press the ‘ADJ’ button on a service R/C an enter EZ
ASJUST by selecting ‘6. White Balance’.
(3) Then, 216 gray pattern will appear on the screen.
(4) Change the R/G/B-Gain as passing in 3 color coor inates
an temperatures, COOL, MEDIUM an WARM.
< Temperature: COOL >
- R-Cut / G-Cut / B-Cut is set to 64
- Control R-Gain an G-Gain.
- Each gain is limite to 192
< Temperature: MEDIUM >
- R-Cut / G-Cut / B-Cut is set to 64
- Control R-Gain an G-Gain.
- Each gain is limite to 192
< Temperature: WARM >
- R-Cut / G-Cut / B-Cut is set to 64
- Control G-Gain an B-Gain.
- Each gain is limite to 192
(5) Press ‘EXIT’ button on a service R/C
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20Range
50Target luminance
20Range
50Target luminance
128646464B Cut
128646464G Cut
128646464R Cut
50H3
60H3
25519219219200jfJcjiB Gain
25519219219200jeJbjhG Gain
25519219219200jJajgR Gain
WarmMeCoolWarmMeCool
MAX
CENTER
(DEFAULT)
Min
RS-232C COMMAND
[CMD ID DATA]
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<Notice> Module Heat Run Condition for W/B
1. The a justment must be performe in the circumstance of
25±5°C of temperature an 65±10% of relative humi ity if
there is no any specifics.
2. Before an W/B a justment, the mo ule which will be use
shoul be place in the circumstance of 15°C~25°C for
above 2 hours.
3. If a mo ule was place in the circumstance of below 15°C,
it shoul be place in the circumstance of 15°C~25°C for
above 2 hours or be run for above 5 minutes in an aging
environment of 60°C.
4. Before an W/B a justment, TV set shoul be run for 5
minutes at least.
9. Serial Number Download
9 1. Download Procedure
(1) Press “Power on” button of a service R/C.(Bau rate :
115200 bps)
(2) Connect RS232-C Signal Cable.
(3) Write Serial number through RS-232C.
(4) Check the serial number at the Diagnostics of ‘SETUP’
menu. (Refer to below).
Caution : Don’t ownloa HDMI/RGB EEPROM to write a mo el
name. Mo el name ois unnecessary because this
mo el use ‘Tool Option’ to call a mo el name.
9 2. Signal TABLE
CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub A ress high (00~1F)
ADL : EEPROM Sub A ress low (00~FF)
Data : Write ata
CS : CMD + LENGTH + ADH + ADL + Data_1 + ... +
Data_n
Delay : 20ms
9 3. Command Set
[Description]
FOS Default write : <7mo e ata> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart,
0, Phase
Data write : Mo el Name an Serial Number write in
EEPROM,.
10. Check Information (Serial No. & Mo el name)
(1) Push the menu button in DTV mo e.
(2) Select the SETUP -> Diagnostics -> To set
(3) Check the Serial Numbe
11. SET factoring condition
(1) This A justment result is set through factory shipment
mo e.
(2) Push the ‘IN-STOP’ button on a service R/C before the
factory shipment an power button mush be pushe .
Caution: If ‘IN-STOP’ button is pushe , preset CH map will be
lost.
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TROUBLESHOOTING GUIDE
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