Huawei ETS2000 Series Maintenance Manual page 37

HUAWEI ETS2000 series Wireless FWT Maintenance Menu
3. Key-press fault maintenance procedure
power-on and startup
Yes
Does LCD respond after the key is
pressed?
Yes
Does LCD show value of the key pressed?
Yes
Does the keypad respond to data correctly?
Yes
End
Figure 4-3
Key-press fault maintenance procedure
37
0Chapter4 Maintenance Procedures and S
olutions to Common Faults
No
C heck inter-board connection
power and replace the fault
cable
Check whether or not keys are
No
reliably connected with the
keypad and remove faults
No
Replace the keypad or the
mechanical-part upper-lid
on the fixed station