Read LG 42LN5700 (CHASSIS:LJ33B) Service Manual online
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5.7. MHL Test
Step 1) Turn on TV
Step 2) Select HDMI4 mode using input Menu.
Step 3) Set MHL Zig(M1S0D3617) using MHL input, output
and power code.
Step 4) Connect HDMI cable between MHL Zig and HDMI4
port.
Step 5) Check LED light of Zig and Module of Set
Result) If, The LED light is green and The Module shows
normal stream -> OK
Else -> NG
※
Caution : Don’t push The INSTOP KEY after completing the
function inspection.
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
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