4
Troubleshooting
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All indicators are Off when the ZXHN H389A equipment is powered On.
First make sure that you have inserted the power adapter of the ZXHN
H389A into a working power socket. If the indicators are still Off after con-
firmation of the above items, may be the hardware is damaged. You may
contact local operator for maintenance. Never dismantle the equipment by
yourself.
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Sometimes, the DSL users cannot access to the Internet normally
First check whether the ZXHN H389A is in the normal state (Check the in-
dicators according to this user manual). If yes, the computer or application
network may be faulty. This is unrelated with DSL. If the ZXHN H389A is
abnormal, check the status of indicators one by one to remove the fault.
It is suggested to check the following items before seeking help from oper-
ators:
i. The DSL telephone cable connectors are proper.
ii. The DSL is away from the power cable and large-power electronic de-
vices.
iii. No telephone extensions and fax machines are connected between the
DSL incoming line and splitter.
iv. The splitter has been installed correctly.
v. The ZXHN H389A has good heat dissipation ratio.
