SEMC Troubleshooting Manual
TROUBLESHOOTING
Current Consumption Test
K630 - V640 - K660
Step 4 with Fault Trace SW application:
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-
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Flash the phone with ITP SW
Use the TRS Fixture
Connect the:
Power Supply Channel 1 VBATT:
Instrument settings: Voltage: 3.8 Volt, Limiter 3A
Power Supply Channel 2 DCIO/SEPI
Instrument settings: Voltage: 5 Volt, Limiter 2A
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Connect DCIO/SEPI Cable to the phone
Perform the following tests:
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Max TX Power GSM 850 MHz
Fault Trace SW settings:
TX and RX GSM
GSM Mode Settings:
TX Switched
GSM Radio Settings:
Select Band: GSM 850
Channel: 128
Power Level: 5
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Max TX Power GSM 900 MHz
Fault Trace SW settings:
TX and RX GSM
GSM Mode Settings:
TX Switched
GSM Radio Settings:
Select Band: GSM 900
Channel: 1
Power Level: 5
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Max TX Power GSM 1800 MHz
Fault Trace SW settings:
TX and RX GSM
GSM Mode Settings:
TX Switched
GSM Radio Settings:
Select Band: GSM 900
Channel: 512
Power Level: 0
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Max TX Power GSM 1900 MHz
Fault Trace SW settings:
TX and RX GSM
GSM Mode Settings:
TX Switched
GSM Radio Settings:
Select Band: GSM 900
Channel: 512
Power Level: 0
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Max TX Power WCDMA BAND I
Fault Trace SW settings:
TX and RX WCDMA
Radio Settings:
Select Band: BAND I
Fast Select Channels: Ch LOW
Modes: Max Pwr 23dBm
Compare the current consumption during Max TX Power Tests with the current consumption limits below.
Transmitter current GSM 850 MHz at Ch: 128 power level 5. Typical 175mA
Transmitter current GSM 900 MHz at Ch: 1 power level 5. Typical 185mA
Transmitter current GSM 1800 MHz at Ch: 512 power level 0. Typical 170mA
Transmitter current GSM 1900 MHz at Ch: 512 power level 0. Typical 145mA
Transmitter current in WCDMA BAND I RX Ch Low: 10562 Max power level 23 dBm and Rx on 575mA
Tolerance: ±10%
If the current consumption is not correct, the fault could be fixed by running SERP calibration. If it does not
work then go to GSM and WCDMA Network problems TRS guides.
If the current consumptions are equal to the sheet go to Charging Test.
1215-3608 rev. 1
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