Appendix A Troubleshooting - Zte ZXHN H268A Maintenance Management Manual

Appendix A
Troubleshooting
l
All indicators are Off when the ZXHN H268A equipment is powered On.
First make sure that you have inserted the power adapter of the ZXHN H268A
into a working power socket and that the ZXHN H268A has been powered On (the
switch button is pressed down). If the indicators are still Off after confirmation of the
above items, may be the hardware is damaged. You may contact local operator for
maintenance. Never dismantle the equipment by yourself.
l Sometimes, the DSL users cannot access to the Internet normally
First check whether the ZXHN H268A is in the normal state (Check the indicators
according to this user manual). If yes, the computer or application network may be
faulty. This is unrelated with DSL. If the ZXHN H268A 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 operator:
1. The DSL telephone cable connectors are proper.
2. The DSL is away from the power cable and large-power electronic devices.
3. No telephone extensions and fax machines are connected between the DSL
incoming line and splitter.
4. The splitter has been installed correctly.
5. The ZXHN H268A has good heat dissipation ratio.
l
What are reasons for DSL synchronization failure (also referred as link down or
link establishment failure)?
If the DSL suddenly fails to be synchronized (link down) during application, usually
the Link indicator on the ZXHN H268A will not be On. It is suggested to check the
following steps one by one:
1. First check the quality of incoming cables and incoming cable connectors.
2. Install the ZXHN H268A correctly based on the user guidance. Minimize the
number of taps.
3. Check whether the telephone cables and DSL are in good connection or whether
the telephone cables are normal.
4. Try to disconnect the splitter and directly connect the ZXHN H268A to the incoming
user cable end. Ensure the problem is not due to improper installation or incoming
user line quality. If the DSL can be synchronized again, it means that installation
of the incoming user side is improper. Please reinstall it according to the user
guide.
5. If the DSL still fails to be synchronized when the ZXHN H268A is connected to
the incoming user cable end, contact the operators to check whether it is due to
external line failure or ZXHN H268A failure.
SJ-20150916162339-007|2017-02-16 (R1.0)
A-1
ZTE Proprietary and Confidential