LG EA71G, Service Manual

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Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet applies to EA64B Chassis applied LED 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 ºC ±5 ºC 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,
50/60Hz
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15ºC
▪ 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. PCB assembly adjustment method
3.1. MAC Address, ESN Key, Wide-vine
Key, HDCP 2.2 Download
▪ D/L Program : keydownload.exe
3.1.1. Equipment & Condition
(1) Play file: keydownload.exe
(2) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
(3) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
3.1.2. Download Process
(MAC + WI ESN+HDCP2.2)
(1) Execute “keydownload.exe” on PC
(2) Select the download items.
(3) Mode check : Online only
(4) Check the test process
- DETECT -> MAC_WRITE -> ESN_WRITE (only
Colombia/Panama) -> WIDEVINE_WRITE
(5) Play: START
(6) Check of result: Ready, Test, OK or NG
3.1.3. Inspection : InINSTART menu, check these
keys.
3.2. LAN Test(Ping-test)
3.2.1. PING Test(LAN Operating Test)
3.2.1.1. Check PCBA
(1) Connect LAN to PCBA& Power On.(Default IP can be set
to automatic setting. When power ON, IP can be
Automatically be achieved from the router)
(2) Push ADJ key on Adjust remote-controller.
(3) Enter “13. ACAP PING TEST” & check Network.
3.2.1.2. Check Set(Manufacturer)
(1) Connect TV-Set & PC with Cross LAN cable.(PC IP :
12.12.2.3)
(2) Execute “PINT Test program”, Check setting data of
program. (TV-Set IP : 12.12.2.2)
(3) Push Power Only key on Adjust remote-controlle.
(4) Click “RUN”, Check “OK” or “NG”