Read LG 42LV5400 (CHASSIS:LA12E) Service Manual online
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ADJUSTMENT INSTRUCTION
1. Application range
This spec sheet is applied to LA12E Chassis applied LCD TV
all models manufactured in TV factory
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.
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
2.3 The adjustment must be performed in the
circumstance of 25±5°C of temperature and 65±10%
of relative humidity
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.
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.
strong. Digital pattern 13ch and/or Cross hatch
pattern 09ch), there can some afterimage in the
black level area.
3. Adjustment items
3.1. Main PCBA check process
• ADC adjustment: Component 480i, 1080p / RGB-PC 1080p
• EDID downloads for HDMI and RGB-PC
• 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.
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
•Ship-out mode setting (In-Stop)
•GND and HI-POT test
•RS-232C functionality check
•Factory Option setting per destination
•Ship-out 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
• Shipment conditions, Channel pre-set
4. MAIN PCBA Adjustments
4.1. MAC Address and ESN Key and
WIDEVINE Key download
4.1.1. Equipment & Condition
1) Play file: keydownload.exe .
4.1.2. Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200(Baudrate)
2) Barcode: Com 1,2,3,4 and 9600(Baudrate)
2) Barcode: Com 1,2,3,4 and 9600(Baudrate)
4.1.3. Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process
2) Mode check: Online Only
3) Check the test process
• US, Canada models: DETECT MAC_WRITE
WIDEVINE_WRITE
• Korea, Mexico models: DETECT MAC_WRITE
WIDEVINE_WRITE
4) Play: START
5) Check of result: Ready, Test, OK or NG
6) Printer Out (MAC Address Label)
5) Check of result: Ready, Test, OK or NG
6) Printer Out (MAC Address Label)
4.1.4. Communication Port connection
1) Connect: PCBA Jig RS-232C Port == PC RS-232C Port
4.1.5. Download
1) US, Canada, Mexico models (11Y LCD TV + MAC +
Widevine + ESN Key)
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