Huawei ETS2000 Series Maintenance Manual page 45

HUAWEI ETS2000 series Wireless FWT Maintenance Menu
4) Make sure that the personalized setting has set the communication port No.
as the serial port connected;
5) If no matter whether or not the FWT is in sleep, it cannot communicate with
the daemon, the solution is to take off the handle and observe whether or
not it can communicate with the daemon;
6) If the FWT has no response after the above examinations, perhaps the
TCPU board is broken and should be replaced;
7) If the new TCPU board does not have any effect, perhaps the PIPU board is
broken. Then the PIPU board should be replaced.
5, If the phone is taken off from the FWT, no voice can be heard from the handle
Solution:
1) Make sure that the interface between the handle and the FWT is reliably
connected;
2) Open the FWT cover to check whether or not the PIPU-board handle
interface connection-line is reliable;
3) Check whether or not the PIPU-board handle interface connection-line is
correct order;
4) Replace the headphone or the PIPU board.
6, Phenomenon: The FWT is unable to charge the battery.
Solution:
1) Use a multimeter to measure whether or not the output voltage of the
external power adapter is normal;
2) Shut down the power switch of the FWT. Open the battery cover of the FWT,
take out the battery, and check whether or not the battery voltage is normal
and whether or not any liquid has been leaked;
3) If the power or the battery has faults, replace them; otherwise, re-load the
software codes;
4) If no changes happen, replace the PIPU board.
7, Phenomenon: The fast battery charging by the FWT cannot stop.
Solution:
1) Use a multimeter to measure whether or not the output voltage of the
external power adapter is normal;
2) Shut down the power switch of the FWT. Open the battery cover of the FWT,
take out the battery, and check whether or not the battery voltage is normal
and whether or not any liquid has been leaked;
3) If the power or the battery has faults, replace them; otherwise, re-load the
software codes;
4) If no changes happen, replace the PIPU board.
0Chapter4 Maintenance Procedures and S
olutions to Common Faults
45