Huawei ETS2000 Series Maintenance Manual page 44

HUAWEI ETS2000 series Wireless FWT Maintenance Menu
2) Check the output side of the external power supply and make that the power
voltage output is normal;
3) Make sure that the switch is turned on. You may shut down the switch and
wait a minute. Then observe whether or not the system respond;
4) If the external connection is Okay, shut off the power and replace the
inter-board connection cables. Then repeat step 3;
5) If the FWT has no response after the above examinations, perhaps the
TCPU board is broken and should be replaced;
6) If the FWT has no response after the above examinations, perhaps the
PIPU board is broken and should be replaced;
2, Phenomenon: The FWT has not yet been conencted with the external power
supply; when the power switch is turned on, the telephone does not respond at
all.
Solution:
1) Open the battery cover of the FWT to check whether or not the battery is
assembled;
2) Make sure that the battery connector is correctly assembled;
3) Make sure that the battery is charged with enough electricity;
4) If the battery works well, turn on the switch. You can then shut down it and
wait a minute to check whether or not the system will respond;
5) If the battery and its connection are Okay, shut off the power and replace the
inter-board connection cables. Then repeat step 3;
6) If the FWT has no response after the above examinations, perhaps the
TCPU board is broken and should be replaced;
7) If the FWT has no response after the above operation, perhaps the PIPU
board is broken and should be replaced;
3, Phenomenon: The battery is used to supply power. After the machine sterts up,
the LCD is off after instantaneous twinkling.
Solution:
Make sure that the battery is charged with enough electricity. After the AC power
adapter is used, if the machine starts up well, that indicates that the battery does
not have enough electricity to start up the FWT.
4, Phenomenon: The calling function of the FWT is normal, but the serial port
cannot communicate with the daemon after being connected with it.
Solution:
1) Take off the handle to observe whether or not the phenomenon is still there;
2) Make sure that the serial port line is correctly connected with the computer
and the FWT;
3) Make sure that the serial port speed is set as 115200bps;
0Chapter4 Maintenance Procedures and S
olutions to Common Faults
44