Panasonic SA-MAX3500PU - Troubleshooting: FL No Device (USB)

32
7.8. FL Show “No Device” at USB selector Only
y
Press Power Button of Unit
or Remote Control to Turn
ON the Unit
No
Yes
Yes
No
Change IC1001
(SOC)
Select USB A or USB B selector,
connect USB device, No TOC
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End
Yes
Yes
Check 3.3V at D+A or
D+B signal at pin 98
(USB B) or pin 104
(USB A) of IC1001
SOC
Check 3.3V at pin
102 of IC1001
(SOC)
Change:
R9012 (open)
R9013 (open)
R9014 (open)
R9015 (open)
Change
LB1007
(open)
1
2
Check 5V Supply
at IC9002(USB
A) or IC9003
(USB B) pin 1
6
Replace
IC1201
7
No
Check 3.3V at
Pin 4 of
IC9002 (USB
A) or IC9003
(USB B)
No
Yes
Replace IC9002
(USB A) or
IC9003 (USB B)
3
4
5