Huawei G510 - Page 64

G510 Maintenance Manual V1.0
INTERNAL
2013-01-28
Huawei Confidential
Page 64 of 96
Figure 9-27 Troubleshooting process when the vibrator does not vibrate
The vibrator does not
vibrate.
Is the software
properly reloaded?
End
Y
N
Is the vibrator
dry jointed?
Y
Re-weld the vibrator and
verify that it is properly
soldered. The maintenance
process then ends.
Is power properly
supplied to the vibrator?
Is the voltage at the
cathode lower than that
of the anode？
N
N
Check the power.
Does the vibrator
operate properly
after replacement?
Y
Y
End
N
Return the U8825-1 to Huawei
for repair.
Circuit Symbols
Signal
Symbol
Description
Reference Measurement
or Waveform
VPH_PWR
Main power supply signal, supplying
power to the vibrator
None
VIB_DRV_N
vibrator drive signal pin, connected to the
vibrator's negative electrode
None