Gnd And Hi-Pot Testing; Local Dimming Function Check; Intelligent Sensor Inspection - LG 49LF6400-DA Service Manual

5.6. Local Dimming Function Check

Step 1) Turn on TV
Step 2) Press "TILT" key on the Adj. R/C
Step 3) At the Local Dimming mode, module Edge Backlight
moving left to right. Back light of IOP module moving
Step 4) confirm the Local Dimming mode.
Step 5) Press "exit" key.

5.7. Intelligent Sensor Inspection

Step 1) Turn on the TV set.
Step 2) Press "EYE" button on the Adjustment remote
controller.
Step 3) Block the Intelligent Sensor module on the front C/A
about 6 seconds. When the "Sensor Data" is lower
than 20, you can see the "OK" message
=> If it doesn't show "OK" message, the Sensor Module is
defected one. You have to replace that with a good one.
Step 4) After check the "OK" message come out, take out your
hand from the Sensor module
=> Check "Sensor Data" value change from "0" to "300" or
not. If it doesn't change the value, the sensor is also
defected one. You have to replace it.
※ Caution : Don't push The INSTOP KEY after completing the
function inspection
Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Green Eye-Check
Sensor Data : 492
BackLight : 100
OK
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6. GND and HI-POT Testing

6.1. GND & HI-POT auto-check preparation
Check the connection between set and
power cord
1) Check the POWER CABLE and SIGNAL CABE insertion
condition
6.2. GND & HI-POT auto-check
1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
2) Connect the AV JACK Tester
3) Controller (GWS103-4) on.
4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next process
automatically
6.3. Check Point
1) Test voltage
3 Poles : GND: 1.5KV/min at 100mA / SIGNAL: 3KV/min at
100mA
2) TEST time: 1 second
3) TEST POINT
3 Poles : GND Test = POWER CORD GND and SIGNAL
CABLE GND.
Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
LGE Internal Use Only