Huawei G510 Maintenance Manual page 64

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