Read LG 42LT760H-SA (CHASSIS:LJ3AZ) Service Manual online
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Step 3) Select Wireless Button in Network Connection
Step 4) If the system finds any AP like blow PIC, it is working
well
5.6. HDMI ARC Function Inspection
5.6.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
5.6.2. Test method
(1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI1)
(2) Check the sound from the TV Set
(3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
* Remark: Inspect in Power Only Mode and check SW version
in a master equipment
6. Check Commercial features
Model info.
Commercial Feature
Name
inch
Ext SPK Out
RJP
(HDMI interface)
LT760H-SA
32/42
O
O
6.1. External SPK Out
6.1.1. Equipment & Condition
▪ Jig (Speaker out JIG) or Oscilloscope
▪ Power only mode
6.1.2. Check the speaker out
1) Connect the External Speaker : check the sound
Connect oscilloscope, you can see this waveform
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