LG 43LF540 -DB Series, Service Manual

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Only for training and service purposes
4.5. Outgoing condition Configuration
■ When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
4.6. GND & Hi-pot test
4.6.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
4.6.2. 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.
4.6.3. Checkpoint
(1) Test voltage
①
3 Poles
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
②
2 Poles
- SIGNAL: 3KV/min at 100mA
(2) TEST time: 1 second
(3) TEST POINT
①
3 Poles
- GND Test = POWER CORD GND and SIGNAL CABLE
GND.
- Hi-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
②
2 Poles
- Hi-pot Test = Accessible Metal and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
5. 3D Function Test (Only LF62)
(Pattern Generator MSHG-600, MSPG-6100 [SUPPORT
HDMI1.4])
* HDMI mode NO. 872 , pattern No.83
1) Please input 3D test pattern like below (HDMI mode NO.
872 , pattern No.83)
2) When 3D OSD appear automatically , then select OK
button.
3) Don’t wear a 3D Glasses, Check the picture like below