5-2 Trouble shooting Chart
Touch keys do not work
Touch keys do not
work
Go
No
Fix the connection XS601 on Front
Control Board and XP9 on Main
Board
Yes
Replace U22 on Main Board, or
replace Main Board
No
Yes
Replace Touch Board
Check v3.3V on Touch Board(U603
PIN27) and Font Board(XS601 PIN3)
Check Front Control Board and Touch
Board signals SCL(TOUCH BD U603
PIN19),SDA(U603 PIN18)
Summary of Contents for HTS5520
Page 17: ...3 FM Cable 4 5 1 2 Audio Cable HDMI Cable 2 3 ...
Page 18: ...6 AAA x 2 2 4 ...
Page 20: ...3 1 2 3 3 1 4 2 2 6 ...
Page 58: ...7 16 7 16 Front Control Board Print layout Bottom side ...
Page 60: ...Touch Panel Board Print layout Top and Bottom side 7 18 7 18 ...
Page 61: ...Amplifier Board Print layout Top and Bottom side 7 19 7 19 ...
Page 62: ...Power Board Print layout Bottom side 7 20 7 20 ...