Huawei U8860 Maintenance Manual page 41

U8860
Maintenance Manual
Signal
VREG_L10_2P7
VREG_L11_1P8
VREG_L14_2P85
VREG_MSM_QFUSE_PRG
VREG_L18_2P2
VRGE_F6
VREG_MSM_L20_1V8
VREG_MSM_MPLL
VREG_L24_1P2
VREG_POP_VDDQ_1P2
VREG_NCP_1V8
VREG_S0_1V1_C1
VREG_S1_1V1_C2
VREG_S2_1V35_A1
VREG_S3_1V8
VREG_S4_2V2

Excessive current is caused by short circuits. The main reason is ground short circuits of
VBAT.
Issue 1.0 (2011-11-14)
Excessive current (DC power supply)
There are two types of excessive currents:
− Excessive current occurs after the Power key is pressed.
− The phone has current (greater than 1 mA) when it has been powered off.
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Reference Value for the Output Voltage
2.7V
1.8V
2.85V
1.8V
2.2V
2.6V
1.8V
1.1V
1.2V
1.2V
-1.8V
1.1V
1.1V
1.3V
1.8V
2.2V
9 Principles and Troubleshooting
Test Point
C457
C458
C473
C445
C465
C1308
C441
C466
C442
C443
C464
C418
C450
C447
C424
C426
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