HIKVISION DS7208HVI-ST - USB Fault

⑩.USB Fault
Step one: measurement SESR05 (QA1 or QA2) 2, 3 feet voltage difference
value (normal voltage difference about 3.05 V), as well as the impedance to the
GND, or replacement
Note: SESR05 (QA1 or QA2),front and after USB interface is independent of
each other
SESR05
（
QA2
）
SESR05
（
QA1
）