MicroNet Technology SP3508A - Manual (Page 43)

7.2 Appendix B: Troubleshooting
z
Symptom: Power indictor does not light up (Green).
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Causes: Defective external power supply.
¾
Solution: Check the power plug by attaching with a functioning
one. Check the power cord with other devices. If both tests fail,
have the power supply replaced by qualified distributor.
z
Symptom: Link indicator does not light up (Green).
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Causes: Network interface, network cable or switch port may
be faulty.
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Solution:
„ Power off and reconnect the VDSL switch.
„ Verify attached network devices are powered on.
„ Verify the cables are connected properly on both ends.
„ Verify the proper cable is used and the distant does not
exceed the specified limit.
„ Phone wire must be connected between SP3508A and
VDSL modem prior to powering on of devices.
„ Replace the defective cable or modem if necessary.
z
Symptom: VDSL always link on 5M/5M speed mode at short phone
cable.
¾
Cause: VDSL auto speed lock up.
¾
Solution: Please re-power VDSL Modem (SP3501AS).
¾
SP3508A will redo auto speed function while SP3501AS
being re-powered on.
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