SUB cannot work
SUBcannotwork
Go
ReplacetheTXmodule.
Check the TX is Normal (in the bar)? Yes or
not?
ChecktheWhitepairLEDisNormal(inthe
SUB)?Yesornot?
Replace the RX module and 8pin
line.
Yes
Yes
No
NO
CheckfromAMboardtheU3isnormal?
（STB_3.3V）
ReplacetheU3.
YES
ReplacePCBAforAMboard.
NO
5-7
Summary of Contents for JBL BAR 2.1
Page 35: ...7 21 PCB Layout Power board and KEY board of subwoofer...
Page 36: ...7 22 PCB Layout Power board of bar...
Page 37: ...7 23 PCB Layout Amplifier board of subwoofer bottom...
Page 38: ...7 24 PCB Layout Amplifier board of subwoofer top...
Page 39: ...7 25 PCB Layout Input board...
Page 40: ...7 26 PCB Layout LED board...
Page 41: ...7 27 PCB Layout HDMI board BOTTOM VIEW...
Page 42: ...7 28 PCB Layout HDMI board TOP VIEW...
Page 43: ...7 29 PCB Layout KEY board of bar...
Page 44: ...7 30 PCB Layout Main board...
