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Rev. 2.01
- 59 -
SRP-350/352plusA&C
7-9 USB2.0 Communication Problem
Main PBA I/F
Failure?
End
1. Check the Control Line & Signal
(/CS_U,/RD,/LWR,USB_/IRQ)
2. Check the Data Line and Signal
3. Check the Connector (34P)
4. Check the Clock (30MHz)
5. Check the related Circuit & Pattern on Main PBA
USB
Problem
Y
N
Reverse Mode
Failure?
Y
N
1. Check the Clock (30MHz)
2. Check the Host whether it works correctly
3. Check the USB Cable whether it is open or shot
4. Check the related Circuit & Pattern on Main PBA