3-11
ELECTRICAL TROUBLESHOOTING GUIDE
B
Power On.
Reconnect it.
Check if Front circuit.
Replace the bluetooth module
Check the AMP part
Does it output
audio?
Connect a bluetooth device,
music is played.
Check connection lines
between SDRAM(IC102) &
MCL3730 and the SDRAM
is damaged.
Check connection lines
between FLASH & MCL3730
and the FLASH access time
whether is suitable or not.
Reconnect it.
Show HELLO.
Show
the bluetooth name
SDRAM
works properly?
Check if CON104 is ok?
NO
NO
NO
NO
NO
NO
Flash
Memory operates
properly?
Check
if CON102 is ok?
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
A
Summary of Contents for LAS350B
Page 9: ...2 2 ...
Page 11: ...A900 2 SUBWOOFER SECTION ...
Page 13: ...2 8 ...
Page 28: ...3 15 2 FLASH MEMORY FIG 2 VCC CS CLK DO 3 4 5 6 VCC CS CLK DO 5 6 4 3 ...
Page 30: ...3 17 4 USB FIG 4 1 USB_5V 11 FIG 4 2 USB D 12 FIG 4 3 USB D 13 11 EC405 100uF 16V C475 12 13 ...
Page 32: ...3 19 6 OPTICAL FIG 6 1 OPT_IN 17 FIG 6 2 OPT_DET 18 17 18 ...
Page 37: ...3 24 ...
Page 47: ...3 44 3 43 2 MAIN P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW ...
Page 49: ...3 48 3 47 ...
