5-4 Trouble shooting Chart
No audio output
No audio output
Go
No
Yes
Yes
Yes
Replace Amplifier Board
No
Replace U8 on Main Board or
replace Main Board
Yes
Refer to CON502 on
Power Board
No
Check v34V for whether normal or
not at on Amplifier Board
Check the 24Pin FFC connection XP13 on
Main Board and XP1 on Amplifier Board
whether right or not between Main Board
and Amplifier Board
Check the control signal whether right or
not at the U8 Pin6, Pin7 on Main Board
and the signal at the XP13 Pin1,2,3,4,5,7
Check XP4 Pin1 +5V on Main Board
whether normal or not
Summary of Contents for HTB5540D/94
Page 13: ...3 4 5 1x 2 3 ...
Page 21: ...X AUDIO IN 2 1 1 3 5MM STEREO 3 USB 2 2 11 ...
Page 22: ...X 1 LAN LAN 1 2 3 2 12 ...
Page 46: ...7 8 7 8 Touch Board Print layout bottom side ...
Page 47: ...7 9 7 9 Touch Board Print layout top side ...
Page 48: ...7 10 7 10 Front Control Board Print layout bottom side ...
Page 49: ...7 11 7 11 Front Control Board Print layout top side ...
Page 50: ...7 12 7 12 Power Board Print layout ...
Page 51: ...7 13 7 13 Amplifier Board Print layout bottom side ...
Page 52: ...7 14 7 14 Amplifier Board Print layout top side ...
Page 57: ...10 1 10 1 Exploded View for HTB5540D 12 94 93 ...
