5-9 Trouble shooting Chart
MP3 Link does not work
MP3 Link does
not work
Go
No
Check U21 U22 on front board
Yes
Check Main Board C361, C352, R352,
R458
No
Yes
Replace U18 74HC4052
Check Main Board power supply
circuit.
No
Yes
Refer to Power Board CON501
No
Yes
Check signal at XP9 PIN22: MP3_R PIN20:
MP3_L on front board whether normal or not
Check Main Board U18 74HC4052 PIN2,
PIN15 L/R signal input right or not
Check U18 74HC4052 whether broken
or not
Check voltage at U18 PIN16 (6V), check
12V on Main Board whether normal or not
Check voltage 5V at FB23 whether normal or
not
Check Main Board U9
No
Yes
Содержание HTB5540D/94
Страница 13: ...3 4 5 1x 2 3 ...
Страница 21: ...X AUDIO IN 2 1 1 3 5MM STEREO 3 USB 2 2 11 ...
Страница 22: ...X 1 LAN LAN 1 2 3 2 12 ...
Страница 46: ...7 8 7 8 Touch Board Print layout bottom side ...
Страница 47: ...7 9 7 9 Touch Board Print layout top side ...
Страница 48: ...7 10 7 10 Front Control Board Print layout bottom side ...
Страница 49: ...7 11 7 11 Front Control Board Print layout top side ...
Страница 50: ...7 12 7 12 Power Board Print layout ...
Страница 51: ...7 13 7 13 Amplifier Board Print layout bottom side ...
Страница 52: ...7 14 7 14 Amplifier Board Print layout top side ...
Страница 57: ...10 1 10 1 Exploded View for HTB5540D 12 94 93 ...
Страница 58: ...10 2 10 2 Exploded View for HTB5540D 51 98 ...