47LH85 (CHASSIS:LA92F) - LG TV Service Manual (repair manual). Page 63

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INPUT
MAIN IC
AV
Component
HDMI
RGB
Analog
Digital
WIRELESS MODEL
SIGNAL
CONVERTER
DTC30LM36 +
SIL9134
LVDS
MEDIA-BOX
TX MODULE
HDMI
SIL9125 +
SB9120 +
SB9110
RX MODULE
SB9111 +
SB9121 +
SIL9134
MAIN IC
LCD
MODULE
LGD V4
LVDS
Wireless
TV SET
HDMI
a
b
c
d
e
f
g
WIRELESS LH80/LH85
Service
only
HDMI JACK
HDMI5
HDMI JACK
Wired
HDMI CABLE
Pairing
- S/W version check
- Fan defect
▷ TV Rx module fan defect: Check Fan error of TV In-start menu
▷ Media-Box fan defect: Check the red led’s blinking of Media-Box front 
- Wireless interference check
▷ Refer to the installation method guide
- Inner HDMI cable’s connection status (From Rx/Tx module to Main)
Trouble shooting 
OSD
OSD
※ Check first when Wireless connection is disable!
※ Check Tip
In some cases, TV only or Wired mode make easy to check.
※ Caution & Information
TV set & Media-Box is just 1:1 connection. (No multiple device connection)
- In order to download TV set, you must change the mode to HDMI5 or turn off Media-Box.
- Rx/Tx module’s performance is very sensitive to temperature. So, When you repair the defect, should keep up with
the original assembly state.
LGE3159
LGE3369 +
LGE7329
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