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ELECTRICAL TROUBLESHOOTING GUIDE
3. USB FUNCTION
USB PART
Check R379 Voltage 5.1 V
Check Reading OK
OK
YES
YES
YES
Refer to Power Part Troubleshooting
NO
Check JK201 1pin Voltage 5.1 V
Replace the Related part.
NO
Check JK201 2pin(D-), 3pin(D+)
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3-25
Check IC306
NO
YES
OK
Only for training and service purposes.
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