LG 55LH80YD-AB Service Manual page 54

Trouble shooting
WIRELESS MODEL
a
Analog
INPUT
Digital
AV
Component
HDMI
RGB
※ Check first when Wireless connection is disable!
- 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)
※ 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.
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
OSD
b c
LVDS
SIGNAL
MAIN IC
CONVERTER
LGE3159 DTC30LM36 +
SIL9134
MEDIA-BOX
d
Wireless
HDMI
TX MODULE
SIL9125 + SB9111 +
SB9120 + SB9121 +
SB9110 SIL9134
Wired
Service
only
HDMI CABLE
HDMI JACK
WIRELESS LH80
OSD
e f
HDMI
RX MODULE MAIN IC
LGE3369 +
LGE7329
TV SET
HDMI5
HDMI JACK
g
LVDS
LCD
MODULE
LGD V4
LGE Internal Use Only