LG 42PG20R-TA (CHASSIS:PP81A) Service Manual ▷ View online
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SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement.
V
Application Range
This spec is applied to the 42”
PLASMA TV used PP81A Chassis.
V
Specification
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)
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 of each product is marked by models.
4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with SBOM.
5) The receiver must be operated for about 20 minutes prior to the adjustment.
5) The receiver must be operated for about 20 minutes prior to the adjustment.
V
Test Method
1) Performance : LGE TV test method followed.
2) Demanded other specification
2) Demanded other specification
Safety : CE, IEC specification
EMC
EMC
: CE, IEC
V
General Specification ( 42” XGA Module)
Display Screen Device
Aspect Ratio
PDP Module
Operating Environment
Storage Environment
Input Voltage
1
2
3
4
5
6
No
Item
Specification
Remark
42” Wide Color Display Module
16:9
PDP42PG1,
RGB Closed Type
1)Temp.
: 0~60deg
2)Humidity : 20~80%
3)Temp.
: -20~60deg
4)Humidity : 10~90%
100-240V~, 50/60Hz
Plasma Display Panel
Glass Filter
LGE SPEC.
Maker : LGIT, Sansung
Chassis
PP81A
42PG20R-TA
Non-EU
LG
Model Name
Market
Brand
Remark
42PG20R-TA
Safety : IEC/EN60065,
EMI : CISPR13
Non-EU
Model
Appliance
Market
TEST
Remark
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Market
Broadcasting system
Available Channel
Receiving system
SCART Input(2EA)
Video Input (1EA)
S-Video Input (1EA)
Component Input (1EA)
RGB Input(1EA)
HDMIInput(2EA)
Audio Input (5EA)
RS-232C(1EA)
USB Input(1EA)
1
2
3
4
5
6
7
8
9
10
11
12
13
No
Item
Specification
Remark
Non EU
PAL/ SECAM/ BG/I /DK, NTSC-M
BAND
PAL
VHF/UHF
E2~C69
CATV
S21~S47
Upper Heterodyne
PAL/SECAM/NTSC
PAL/SECAM/NTSC
PAL/SECAM/NTSC
Y/Cb/Cr, Y/Pb/Pr
RGB-PC, S/W Upgrade
HDMI-DTV, Only PCM Mode
AV (2EA), SIDE AV(1EA)
Remote control
Divx, MP3, JPEG
Rear 1EA, Side 1EA
Rear 1EA
Side AV : S-Video Priority
Rear HDMI(2)
L/R Input(PC 1EA, SCART 2EA,
SIDE AV 1EA, Component 1EA)
V
Model Specification
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to all of the PP81A Chassis.
2. Specification
(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 instrument.
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
(3) The adjustment must be performed in the circumstance of
25±5
c
C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 100~240V,
50/60Hz.
(5) Before adjustment, execute Heat-Run for 30 minutes at RF
no signal.
3. ADC calibration
3-1. PC input ADC
(1) Auto RGB Gain/Offset Adjustment
1) Convert to PC in Input-source
2) Signal equipment displays
2) Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution XGA (1024 x 768 @ 60Hz)
Model : 60 in Pattern Generator
Impress Resolution XGA (1024 x 768 @ 60Hz)
Model : 60 in Pattern Generator
(1024x768@60Hz Black and White Pattern)
Pattern : 54 in Pattern Generator (MSPG-925 SERISE)
[1/2 Black & White Pattern (Refer below picture)].
[1/2 Black & White Pattern (Refer below picture)].
3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)
0x00 0x02 instruction.
(2) Confirmation
1) We confirm whether “0xF1 (offset), 0xF2 (gain)” address of
EEPROM “0xBC” is “0xAA” or not.
2) If “0xF1”, “0xF2” address of EEPROM “0xBC” isn’t “0xAA”,
we adjust once more
3) We can confirm the ADC values from “0x00~0x05”
addresses in a page “0xBC”
[ Manual ADC process using Service Remocon. After enter
Service Mode by pushing “ADJ” key, execute “ADC Adjust” by
pushing “
pushing “
G
” key at “Adjust-RGB”.
3-2. COMPONENT input ADC
(1) Component Gain/Offset Adjustment
1) Convert to Component in Input-source
2) Signal equipment displays
2) Signal equipment displays
Impress Resolution 720P
MODEL : 217 in Pattern Generator
MODEL : 217 in Pattern Generator
(720P/60Hz 100% Color Bar Mode)
PATTERN : 65 in Pattern Generator( MSPG-925 SERISE)
3) Adjust by commanding AUTO_COLOR_ADJUST(0xF1)
0x00 0x02 instruction
(2) Confirmation
1) We confirm whether “0xF3 (offset), 0xF4 (gain)” address of
EEPROM “0xBC” is “0xAA” or not.
2) If “0xF3”, “0xF4” address of EEPROM “0xBC” isn’t “0xAA”,
we adjust once more.
3) We can confirm the ADC values from “0x06~0x0B”
addresses in a page “0xBC
<Fig. 1>
Adjustment pattern (COMPONENT)
MSPG925FA
Component
RGB
ADC
Model : 60
(1024x768@60Hz)
Model : 216
(720P@60Hz)
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4. PCB Assembly Adjustment Items
4-1. Option Adjustment Following BOM
Tool Option1
Tool Option2
Area Option
Tool Option2
Area Option
* Profile: Must be changed the option value because being
different with some setting value depend on module, inch
and market
and market
* Equipment : Adjustment Remote Controller
(1) Push the IN-START key in the Adjust R/C.
(2) Input the Option Number that was specified in the BOM,
(2) Input the Option Number that was specified in the BOM,
into the Shipping area.
(3) Select “Tool Option1/ Tool Option2/ Area Option” by using
D
/
E
(CH+/-) key, and press the number key(0~9)
consecutively
ex) If the value of Tool Option1 is 7, input the data using
ex) If the value of Tool Option1 is 7, input the data using
number key “7” (Fig. 2)
Caution: Don’t Push “IN-STOP” key after PCB assembly
adjustment.
(4) Adjustment method
Before PCBA check, have to change the Tool option and
Area option
Area option
[ About PDP
After done all adjustments, Press IN-START button and
compare Tool option and Area option value with its BOM, if it
is correctly same then Change “RF mode” and then unplug
the AC cable.
If it is not same, then correct it same with BOM and unplug AC
cable.
For correct it to the model°Øs module from factory JIG model.
compare Tool option and Area option value with its BOM, if it
is correctly same then Change “RF mode” and then unplug
the AC cable.
If it is not same, then correct it same with BOM and unplug AC
cable.
For correct it to the model°Øs module from factory JIG model.
[ Don’t push The IN-STOP KEY after completing the function
inspection.
5. S/W Program Download
5-1. Profile
This is for downloading the s/w to the flash memory of the
IC803
IC803
5-2. Equipment
(1) PC
(2) ISP_tool program
(3) Download jig
(2) ISP_tool program
(3) Download jig
5-3. Connection Structure
5-4. Connection Condition
(1) IC name and circuit number : Flash Memory and IC803
(2) Use voltage : 3.3V (5 pin)
(3) SCL : 15 pin
(4) SDA : 12 pin
(5) Tact time : about 2min and 30seconds
(2) Use voltage : 3.3V (5 pin)
(3) SCL : 15 pin
(4) SDA : 12 pin
(5) Tact time : about 2min and 30seconds
6. Download Method (PCB Ass’y)
6-1. Preliminary Steps
(1) Connect the download jig to D-sub jack
(2) Connect the PC to USB jack
<Fig. 2>