Rf Unit; Rf Failure - Huawei Ascend Maintenance Manual

Y210 Mobile Phone
Maintenance Manual
Troubleshooting Charging Failure
Figure 9-6 Charging failure

9.3 RF Unit

9.3.1 RF Failure

Troubleshooting Transmission Failure

Issue 1.0 (2012-11-28)
Charging failure
Is the charger working
properly?
Y
Is J901 poorly
soldered?
N
Is the battery in good
contact with the battery
connector?
Y
Does VPH_PWR have
voltages?
Y
Is there voltage difference
Y
between Q201' pin 2 and
pin 3?
Y
Is the battery damaged?
N
End
GSM/DCS transmission failure
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9 Principles and Failure Analysis
N
Replace the
charger
Y
Re-solder J901
N
Repair or replace
J902
N
Replace U201
N
Replace Q201
Y
Replace the
battery
31