System Connector Protection Test; Current Consumption Test - Sony Ericsson Cyber-Shot C905 Troubleshooting Manual

System Connector Protection Test

Perform Diode and Ohm measurements, use the DMM instrument.
T
Note! he Battery must be removed from the Phone during this test.
Note! Connect the Black probe to X2405_PIN 9 (GND).
PIN_1 PIN_9 GND
System Conn. Diode Ohm
X2405 Measurements Measurements
(PIN Position) (Volt) (Ohm)
1 0L 1M - 0L
2 0 0
3 2.6 – 2.8 12K
4 0.7 - 1.2 1.0K – 1.1K
5 1.8 – 2.0 2.0K – 2.2K
6 1.8 – 2.0 2.0K – 2.2K
7 0 75
8 2.0 - 2.6 500K – 700K
9 GND GND
10 0.7 – 0L 50K – 0L
11 0.7 – 0L 50K – 360K
12 0L 75K – 0L
TROUBLESHOOTING
PIN_12
SL 4 SL 5
(Repair Action) (Repair Action)
X2405
C2439 if lower
L2407
N2421 if lower
X2405 if higher
No Action
L2406 if higher
X2405 if higher
L2401 if higher C2443 if lower
N3101 if lower or higher
L2402 if higher
N3101 if lower or higher C2442 if lower
X2405 if higher
X2405 if higher
L2403 if higher C2448 if lower
N3101 if lower or higher
X2405 if higher
L2404 if higher C2447 if lower
N3101 if lower or higher
X2405 if higher C2445 if lower
V2414 if lower L2405 if higher
R2443 if higher C2444 if lower
N2700 if lower or higher R2453 if higher
X2405 if higher
R2448 if higher R2478 if higher
V2417 if lower R2434 if higher
N2422 if lower or higher
X2405 if higher L2449 if higher
X2405
Z2400
R2445
V2415 if lower
N2420 if lower
X2405 if higher
Z2400 if higher
R2446 if higher
V2416 if lower
N2420 if lower or higher
V2412 if lower C2440 if lower
V2202 if lower C2441 if lower
System Connector Protection Test - Current Consumption Test

Current Consumption Test

Step 1:
Insert a Local SIM Card and use the phone with the Normal SW (SSW).
Use Dummy Battery connected to Power Supply Channel 1 (VBATT).
Instrument settings: Voltage: 3.8 Volt, Limiter 3A.
Note: (Dummy Battery)
The resistance between GND and BDATA should be approximately 27KOhm.
Measure the current consumption when Phone is turned off.
Take a note of the current consumption at Power Supply Channel 1 (VBATT).
The 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:
Turn the Phone On:
Measure the deep sleep current max 6mA typical between 0-3mA. Make sure that the
operator is running with deep sleep mode.
Note: This operation can be switched off by operator if network is busy or heavily-loaded.
If phone using more than 6mA, then go to EMMA and run Software Update Contents
Refresh (SUCR SW).
Step 3 with Fault Trace SW application:
- Flash the phone with ITP SW
- Use Dummy Battery connected to the Power Supply Channel 1 (VBATT)
- Use Fault Trace SW
Connect the:
- Dummy Battery connected to the Power Supply Channel 1 (VBATT):
Instrument settings: Voltage: 3.8 Volt, Limiter 3 A
- Connect DCIO/SEPI to the phone:
Instrument settings: Voltage: 5 Volt, Limiter 2 A
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
SEMC Troubleshooting Manual
C905
1222-9526 rev. 1 31 (124)