Technical information

SEMC Troubleshooting Manual
TROUBLESHOOTING System Connector Protection Test - Current Consumption Test
K630 - V640 - K660
System Connector Protection Test
Perform Diode and Ohm measurements with a Multimeter
Connect the black probe at ground (Pin 9 on the system connector, X2400)
Pin 1
Pin 9GND Pin 12
Pin at
X2400
Diode
Measurements
/ Volt
Ohm
Measurements
/ Ohm
SL 4 Action SL 5 Action
1 0L 27K No Action
D2405 if lower than 27KΩ
R2433 if higher than 27KΩ
2 0.0 1.4 No Action
L2400 and L3301
If higher than 1.4Ω
3 2.0 12K
N3101 if lower than
12KΩ L2401 if higher
than 12KΩ
L2407 If higher than 12KΩ
4 1.0 1K
N3101 if lower than
1KΩ L2402 if higher
than 1KΩ
L2408 if higher than 1KΩ
5 0.0 82
N3101 if lower than
82Ω L2403 if higher
than 82Ω
L2410 if higher than 82Ω
6 0.0 82
N3101 if lower than
82Ω L2404 if higher
than 82Ω
L2409 if higher than 82Ω
7 0L 0L Not connected Not connected
8 1.4 1.5K
V2420 if lower than
1.5KΩ
L2405, R2440, R2436
if higher than 1.5KΩ
9 0 0 No Action No Action
10 0L 430K No Action
D2405 if lower than 430KΩ
R2432 if higher than
430KΩ
11 0L 470K No Action
D2405 if lower than
470KΩ R2431 if higher
than 470KΩ
12 0L 80K
V2421 if lower than
80KΩ
Current Consumption Test
Step 1:
Insert Local SIM Card and use the phone with the Normal SW (SSW) and dummy battery connected to
Power Supply Channel 1 VBATT according to Picture 1.
Instrument settings: Voltage: 3.8 Volt, Limiter 3A.
Measure the current when the Phone is off. Check the current consumption at Power Supply Channel 1
VBATT.
Picture 1
Current consumption in off mode should be less than 1mA.
If more than 1mA go to Dead Phone problems part 1 TRS guide.
Step 2:
Start the phone:
Measure the deep sleep current max 6mA typical between 0-3mA.
Make sure that the operator is running with deep sleep. (This operation can be switched off by operator if
the network is busy).
If the phone is using more than 6mA, then go to EMMA III and perform Software Update Contents Refresh
(SUCR).
Step 3 with Mobile Phone Tester Instrument
Insert Test SIM Card and use the phone with the Normal SW (SSW) and dummy battery connected to Power
Supply Channel 1 VBATT according to Picture 1.
Instrument settings: Voltage: 3.8 Volt, Limiter 3A.
Use the Mobile Phone Tester Instrument in signalling mode directly connected to the phone with the RF
Connector or use Shield Box if not possible. Phone Display must be on during these tests to get correct
current measurements.
Perform Radio TX measurements at GSM and WCDMA Band and compare the result with limits according to
the text below.
Transmitter current 850 MHz at Ch: 128 power level 5. Typical 400mA
Transmitter current 900 MHz at Ch: 1 power level 5. Typical 385mA
Transmitter current 1800 MHz at Ch: 512 power level 0. Typical 365mA
Transmitter current 1900 MHz at Ch: 512 power level 0. Typical 365mA
Transmitter current WCDMA BAND I Low RX Ch: 10562 at 23dBm output power Max 850mA
If the 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.
1215-3608 rev. 1
19 (96)
TROUBLESHOOTING