Adjustment Instruction - LG 50PZ750 Service Manual

1. Application Range
This spec. sheet applies to PU12A 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 cC ± 5 cC of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep 100 V - 240 V,
50 / 60 Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15 cC
- In case of keeping module is in the circumstance of 0 cC,
it should be placed in the circumstance of above 15 cC for
2 hours
- In case of keeping module is in the circumstance of below
-20 cC, it should be placed in the circumstance of above
15 cC 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. Board-level adjustment
- Mac address and Idfile(ESN) Download
- Adjust 480i Comp1 adj.
- Adjust 1080p Comp1 adj.
- Adjust 1920*1080 RGB adj.
- EDID/DDC download
Above adjustment items can be also performed in Final
Assembly if needed. Both Board-level and Final assembly
adjustment items can be check using In-Start Menu 1.
Adjust Check.
3-2. Final assembly adjustment
- White Balance adjustment
- RS-232C functionality check
- Factory Option setting per destination
- Ship-out mode setting (In-Stop)
3-3. Etc.
- Ship-out mode
- Service Option Default
- USB Download(S/W Update, Option)
Copyright ©2011 LG Electronics Inc. All rights reserved.
Only for training and service purposes

ADJUSTMENT INSTRUCTION

4. MAC Address and ESN Key Write
4-1. Equipment & Condition
- Play file: Serial.exe
- MAC Address edit
- Input Start / End MAC address
4-2. Download method
(1) Communication Prot connection
Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port
(2) MAC Address Download
- Com 1,2,3,4 and 115200(Baudrate)
- Port connection button click(1)
- Load button click(2) for MAC Address write.
- Start MAC Address write button(3)
- Check the OK Or NG
(3) Input the ESN Key
(Except Mexico/Canada Models)
- download Model sending Key file
- input by 1 by SET so as not to be duplicated
- 6 - LGE Internal Use Only