5-7 Trouble shooting Chart
AUX IN does not work
no
yes
no
yes
no
yes
no
yes
Check AUXIN Connector
have the signal
Check AUXIN source
Check U6 P11&P4 have
signal On Main PCB
whether or not
Check the R35 R36 C39 C41
whether normal or not
Check U6 P10&P9 is high
level?
Check the 8301 work whether
normal or not
Check U6 work normal
or not
Change the U6
Change U7
AUX IN does not work
yes
Summary of Contents for HTL4111B/12
Page 43: ...USB MP3 board Print Layout bottom and top side 7 14 7 14 ...
Page 44: ...Front Control and Key board Print Layout bottom side 7 15 7 15 ...
Page 45: ...Front Control and Key board Print Layout Top side 7 16 7 16 ...
Page 46: ...Power board Print Layout Bottom side 7 17 7 17 ...
Page 47: ...Main board Print Layout Bottom side 7 18 7 18 ...
Page 48: ...Main board Print Layout Top side 7 19 7 19 ...