LG 42PG3000 – Plasma TV adjustments

These instructions are applied all of the 42” PLASMA TV, PD83A Chassis.

Australia, Belgium, Bulgaria, Croatia, Check, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovenia, Spain, Sweden, Switzerland and United Kingdom

(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.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of 25±5°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) The receiver must be operated for about 15 minutes prior to the adjustment.  In case of keeping module is in the circumstance of 0°C, it should be placed in the circumstance of above 15°C for 2 hours.  In case of keeping module is in the circumstance of below -20°C, it should be placed in the circumstance of above 15°C for 2 hours.

After RGB Full white HEAT-RUN Mode, the receiver must be operated prior to adjustment.

Enter into HEAT-RUN MODE

1) Press the POWER ON KEY on R/C for adjustment.

2) OSD display and screen display PATTERN MODE.

* Set is activated HEAT-RUN without signal generator in this mode.

* Single color pattern(RED/BLUE/GREEN) of HEAT-RUN mode uses to check PANEL.

If you turn on a still screen more than 20 minutes, (Especially digital pattern, cross hatch pattern) after image may be occur in the black level part of the screen.

ADC Calibration

Using ‘power on’ button off the control R/C, power on TV

Adjustment of RGB

Auto RGB Gain / Offset Adjustment

(1) Convert to PC in Input-source. (I2C command)

(2) Signal equipment displays

Output Voltage : 700 mVp-p

Impress Resolution XGA(1024x768@60Hz)

Model : 60 in pattern Generator

Pattern : 65 in pattern Generator(MSPG-925 Series)

[gray pattern that left & right is black and center is white signal(Refer below picture)]

(3) Adjust by commanding AUTO_COLOR_ADJUST

Confirmation
(1) We confirm whether “0xAA(RGB)” address of EEPROM “0xA2” is “0xAA” or not.
(2) If “0xAA(RGB)” address of EEPROM “0xA2” isn’t “0xAA”, we adjust once more.
(3) We can confirm the ADC values from “0xA4~0xA9(RGB)” address in a page “0xA2”.
* Manual ADC process using Service Remocon. After enter Service Mode by pushing “ADJ” key, execute “ADC Adjust” by pushing “►“ key at “ADC CALIBRATION : RGB-C”

Component input ADC

Component Gain/Offset Adjustment
(1) Convert to PC in Input-source(refer to I2C command at page 10)
(2) Signal equipment displays
1) Impress Resolution 480i
Model : 209 in pattern Generator(480i Mode)
Pattern : 65 in pattern Generator(MSPG-925 Series)
2) Impress Resolution 1080i
Model : 223 in pattern Generator(1080i Mode)
Pattern : 65 in pattern Generator(MSPG-925 Series)

Confirmation
(1) We confirm whether “0xB3(480i)/0xBC(1080i)” address of EEPROM “0xA2” is “0xAA” or not.
(2) If “0xB3(480i)/0xBC(1080i)” address of EEPROM “0xA2” isn’t “0xAA”, we adjust once more.
(3) We can confirm the ADC values from “0xAD~0xB2(480i)/0xB6~BB(1080i)” address in a page “0xA2”.
* Manual ADC process using Service Remocon. After enter Service Mode by pushing “ADJ” key, execute “ADC Adjust” by pushing “►“ key at “ADC CALIBRATION : RGB-C”

Each PCB assembly must be checked by check JIG set. (Because power PCB Assembly damages to PDP Module, be careful)

POWER PCB Assy Voltage
Adjustments (Va, Vs Voltage adjustments)
Test Equipment : D.M.M. 1EA
Connection Diagram for Measuring

Adjustment Method
 Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P811, connect - terminal to GND pin of P811.
3) After turning VR901, voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top. (Deviation; ±0.5V)

EDID (The Extended Display Identification Data ) /DDC(Display Data Channel) download
Required Test Equipment
(1) Adjusting PC with S/W for writing EDID Data.  (S/W : EDID TESTER Ver.2.5)
(2) A Jig for EDID Download.
(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub 15Pin cable, DVI to HDMI cable.
Required Test Equipment

Preparation for Adjustment

(1) Connect the Set, EDID Download Jig, PC & Cable.

(2) Turn on the PC & EDID Download Jig. Set up the S/W option.

(3) Power on the Set.

Sequence of Adjustment

EDID Download

1) Init the data.

2) Load the EDID data.(Open File).

[ Analog file ] (for RGB)]

[ Digital file ] (for HDMI)

3) Set the S/W as below.

4) Push the “Write Data & Verify”button. And confirm “Yes”.

5) If the writing is finished, you will see the “OK” message.

6) If TV has three HDMI INPUT, you must download three times for each HDMI.

EDID DATA

1) Analog-RGB

* Before adjusting White-balance, the AV ADC should be done.

If ADC status were “NG”, Need to ADC adjustment.

Adjustment of White Balance
Required Equipment
(1) Remote control for adjustment.
(2) Color Analyzer : CS-1000, CA-100,100+, CA210 or same product.: CH 10
* adjust CA-210+, CA-100+ by before measuring.
(3) Auto W/B adjustment instrument.(only for Auto adjustment)
(4) AV Pattern Generator.
(5) 15Pin D-Sub Jack(RGB) is connected to the AUTO W/B EQUIPMENT.
AUTO White Balance Process
- Adjust Process will start by execute I2C Command (Inner pattern (0xF3, 0xFF)).

Manual W/B process
(using adjusts Remote control)
(1) After enter Service Mode by pushing “ADJ” key.
(2) Enter White Pattern off of service mode, and change off > on.
(3) Enter “W/B ADJUST” by pushing “Right” key at “3. W/B ADJUST”

Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight around is blocked.(illumination is less than 10ux)
(2) Measure and adjust after sticking the Color Analyzer (CA- 100+, CA210) to the side of the module.
(3) Aging time
- After aging start, keep the power on (no suspension of power supply) and heat-run over 15minutes.
- keep white pattern using inside pattern.

Auto adjustment Map(I2C)
- I2C(100K BPS)

Communication START & command form

EEPROM DATA READ & EEPROM Data Write(Serial No D/L)

* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, Phase
Data write : Model Name and Serial Number write in EEPROM,.

Method & Notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing Technology Group.
(3) Serial number D/L must be conformed when it is produced in production line, because serial number D/L is mandatory by D-book 4.0.