Adjustment Instruction - LG 42lk530 Service Manual

1. Application range
Module
Chassis Model Name
type
42/47/55LV3700-UA Edge LED
LA12B
42/47LK550-UA,
Lamp
42/47/55LK530-UA
This spec. sheet applies to LA12B Chassis applied LCD TV all
models manufactured in TV factory
2. Specification
2.1 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.
2.2 Adjustment must be done in the correct order.
2.3 The adjustment must be performed in the
circumstance of 25±5°C of temperature and 65±10%
of relative humidity
2.4 The input voltage of the receiver must keep
100~240V~, 50/60Hz.
2.5 The receiver must be operated for about 5 minutes
prior to the adjustment when module is in the
circumstance of over 15.
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.
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes

ADJUSTMENT INSTRUCTION

Local
THX Remark
dimming
1 point W/B adjustment
X X
3. Adjustment items
3.1 Main PCBA Adjustments
• EDID downloads for HDMI and RGB-PC
Remark
Above adjustment items can be also performed in Final
Assembly if needed. Adjustment items in both PCBA and final
assembly stages can be checked by using the INSTART
Menu 1.ADJUST CHECK.
3.2 Final assembly adjustment
• White Balance adjustment
• RS-232C functionality check
• Factory Option setting per destination
• Shipment mode setting (IN-STOP)
• GND and HI-POT test
3.3. Appendix
• Tool option menu, USB Download (S/W Update, Option and
Service only)
• Manual adjustment for ADC calibration and White balance.
• Shipment conditions, Channel pre-set
- 11 - LGE Internal Use Only