Read LG 50PM4700-DA (CHASSIS:PB22A) Service Manual online
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet applies to PB22A chassis applied PDP TV all
models manufactured in TV factory.
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.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
25 °C ± 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 5 minutes prior to
the adjustment when module is in the circumstance of over
15 °C
- 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 3 hours,.
* Caution : When still image is displayed for a period of 20
minutes or longer (especially where W/B scale is
strong. Digital pattern 13ch and/or Cross hatch
pattern 09ch), there can some afterimage in the black
level area.
3. Adjustment items
3.1. PCB Assembly adjustment
* Caution : Using ‘power on’ button of the control R/C power
on TV
(1) MAC Address, ESN and Wide-vine Key Download
(2) DFT Process
3.2. Set Assembly Adjustment
■ Power PCB Assembly Voltage adjustment (Va,Vs voltage
adjustment)
■ Adjustment of White Balance
■ Serial number download & Model name D/L
■ Checking the Eye-Q Operation
■ LAN port inspection (Ping test)
■ Magic Motion Remote Controller test
■ 3D function test
■ GND and ESD test
3.3. Additional
■ Selection Factory output option
■ S/W Download Guide
4. Board-level adjustment
4.1. MAC Address and ESN and Wide-vine
Key Download
* Connect TV SET and PC which download keys Writing
program by RS232C-Cable
(1) Start Program and Click ‘start’ Button to connect TV and
PC.
(2) When download succeed, you can see “OK” on the
screen.
* Each Chassis has it’s own MAC Address/ESN/Wide-vine
key. Please be careful of download.
- RS-232C Port connection
Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port
4.2. DFT Process
* Depend on situation, Step can be changed.
* Condition spec
Mode
Volume
Power Off
RF
0
DC On
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