Read LG 47LM6200 (CHASSIS:LC22E) Service Manual online
- 9 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED LCD TV
with LC22E chassis.
2. Designation
(1)
ecause 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.
(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
(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.
(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.
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.
3.1 Main PCB check process
3. Adjustment items
4.Automatic Adjustment
■ Enter Service Mode by pushing “ADJ” key,
■ Enter ADC mode by pushing “► key at “8. ADC Calibration”
■ There are 2 ways for ADC Calibration. ( OTP, External )
*. OTP mode
manufacture line, OTP is used for ADC Calibration automatically.
*. External mode
: Manual ADC Calibration. When OTP mode is failed, ADC
calibration should be “OK” by using External mode.
3.2. Final assembly adjustment
▪White Balance adjustment
▪RS-232C functionality check
▪ PING Test
▪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, Service only)
▪ISP Download(Option)
▪MAC Address Download
▪Wide-Vine Key Download
▪Adjust 1920*1080 Comp1
▪Adjust 1920*1080 RGB
▪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.
4.1. Final assembly adjustment
1. Change the ADC type “OTP” by using “►”key.
2. Enter “Start” key.
3. Check the sign “OK” below ADC type.
4.1.2 External ADC Adjustment
Overview
ADC adjustment is needed to find the optimum black level and gain
in Analog-to-Digital device and to compensate RGB deviation.
Equipment & Condition
1) USB to RS-232C Jig
2) MSPG-925 Series Pattern Generator(MSPG-925FA, pattern -65)
- Resolution: 1080P Comp1
1920*1080P RGB
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level : 0.7±0.1 Vp-p
- Image
Adjustment method
▪ Using USB, adjust items listed in 3.1 in the other shown in “4.1.3.3”
Click on the first or last page to see other 47LM6200 (CHASSIS:LC22E) service manuals if exist.