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WCDMA BAND I
- Transmitter current WCDMA BAND I Low RX Ch: 10562 at 23dBm output power Max 800mA
If current consumption is not correct, the fault could be fixed by running SERP calibration if not then
go to GSM and WCDMA Network problems TRS guides.
If the current consumptions are equal to test limits then go to Charging Test.
Step 4 with Fault Trace SW application:
- Flash the phone with ITP SW
- Use 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
- Connect DCIO/SEPI Cable to the phone
Perform the following tests:
- 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
- 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
- Max TX Power DCS 1800 MHz
Fault Trace SW settings:
TX and RX GSM
GSM Mode Settings:
TX Switched
GSM Radio Settings:
Select Band: DCS 1800
Channel: 512
Power Level: 0
TROUBLESHOOTING
Current Consumption Test
- Max TX Power PCS 1900 MHz
Fault Trace SW settings:
TX and RX GSM
GSM Mode Settings:
TX Switched
GSM Radio Settings:
Select Band: PCS 1900
Channel: 512
Power Level: 0
- 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 current consumption during Max TX Power Tests with the current consumption limits below.
Transmitter current 850 MHz at Ch: 128, Power level 5. Typical 240mA
Transmitter current 900 MHz at Ch: 1, Power level 5. Typical 300mA
Transmitter current 1800 MHz at Ch: 512, Power level 0. Typical 200mA
Transmitter current 1900 MHz at Ch: 512, Power level 0. Typical 280mA
Transmitter current in WCDMA BAND I at RX Ch Low: 10562, Max power level 23 dBm and RX On.
Typical 600mA
Tolerance: ±10%
If current consumption is not correct, the fault could be fixed by running SERP calibration if not then
go to GSM and WCDMA Network problems TRS guides.
If the current consumptions are equal to the sheet then go to Charging Test.
SEMC Troubleshooting Manual
W890
1217-3942 rev. 1
21
(119)
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Table of Contents
Troubleshooting
