Sony Ericsson C702, Руководство по устранению неисправностей

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C702
1221-7857 rev. 1
TROUBLESHOOTING Battery and Current Calibration Tes
TROU
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t - Backup Capacitor Test
Battery and Current Calibration Test
Use Phone with the ITP SW
Instrument settings for the Battery Calibration Test
Power Supply Channel 1 VBATT:
X Volt according to the Fault Trace SW Test Instructions:
Fault Trace SW-Logic-Phone Power-Battery Calibration and follow test instructions.
Limiter: 2A.
Power Supply Channel 2 DCIO/SEPI:
5.0 Volt
Limiter: 2A
If test is performed at the Core Level then use dummy battery according to the Equipment List
for this test. If using TRS Fixture no dummy battery is needed.
Note: Maximal cable length between Power Supply Channel 1 VBATT and the dummy battery
or TRS Fixture must be 1m. The cable must have a capacity for at least 16A.
Limits Table for the Battery Calibration Test
Voltage Level on VBATT Min Max UNIT
3.2 Volt 263 351 DEC (mV)
3.2 Volt 107 15F HEX (mV)
4.1 Volt 789 877 DEC (mV)
4.1 Volt 315 36D HEX (mV)
Instrument settings for the Current Calibration Test
If test is performed at the Core Level then use dummy battery according to the Equipment List
for this test. If the TRS Fixture is used no dummy battery is needed.
Note: The Power Supply Channel 1 VBATT must allow reverse current.
Note: Maximal cable length between Power Supply Channel 1 VBATT and the dummy battery
or TRS Fixture must be 1m. The cable must have a capacity for at least 16A.
Note: Length of the Power Supply Channel 2 DCIO/SEPI customized cable must be exact
1,3m.
Power Supply Channel 1 VBATT:
3.8 Volt
Limiter 2A
Power Supply Channel 2 DCIO/SEPI:
5.0 Volt
Limiter: 2A
Use dummy battery according to the Equipment List for this test.
Limits Table for the Current Calibration Test
Measured Current Name Min Max Unit
100mA DCIO Current 50 150 mA
800mA DCIO Current 725 875 mA
Backup Capacitor Test
To perform this test use:
- Phone with ITP SW
- Power Supply Channel 1 VBATT: Instrument settings: Voltage: 3.8V, Limiter: 2A
- Power Supply Channel 2 DCIO/SEPI: Instrument settings Voltage: 5V, Limiter: 2A
This test should be performed in 3 steps:
Step1:
Measure the voltage at the backup capacitor by using Fault Trace SW- Logic - ADC
Values – Read ADC Value (Reading 1).
Step2:
This step should be done 30 seconds after Step 1. Measure the voltage at the
Backup capacitor by using Fault Trace SW - Logic – ADC Values - ADC Channels
– Read ADC Value (Reading 2).
Step3:
Compare the difference between Reading 1 and Reading 2 with the reference table
below. If the Reading 1 value is between 50 and 680 go to Interval 1, if between 681
and 800 go to Interval 2, if between 801 and 880 go to Interval 3 and compare with
the Reading 2 – Reading 1 Min and Max Limits.
Reference Table:
Min Max Unit
Absolute readout
Reading 1
50 880 Dec
Reading 1 (Dec) Reading 2 – Reading 1 (Dec)
Min Max
Interval 1 (50 – 680) 20 210
Interval 2 (681 – 800) 5 30
Interval 3 (801 – 880) 0 10
Note: The upper table contains the absolute limits for the readouts. The lower table
contains the allowed delta between the first and the second readout, separated in
time with 30 seconds.
If the readings is out of limits replace C2217 Backup Capacitor.
If the problem is not solved then SL 5 Replace N2000 SL 4 Escalate.
SEMC Troubleshooting Manual
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