W995
1230-1858 rev. 1
TROUBLESHOOTING
System Connector Protection Test
T
R
O
UBL
ESHOOT
ING
- Current Consumption Test
System Connector Protection Test
Perform the Ohm measurements by using the DMM instrument (Fluke).
Note!
T
he Battery must be removed from the Phone during this test.
Note!
Connect the Black probe to the X2405_PIN 9 (GND).
PIN_1
PIN_9 GND
PIN_12
System Conn.
X2405
(PIN Position)
Ohm
Measurements
(Ohm)
SL 4
(Repair Action)
SL 5
(Repair Action)
1
0L
If lower or higher then go to:
USB/VBUS Charging Problems TRS
guide
No Action
2
0
If lower or higher then go to:
FM Radio Problems or
Hands-Free (PHF) Aux Earphone
Problems TRS guide
No Action
3
10k - 12k
If lower or higher then go to:
Hands-Free (PHF) Aux Microphone
Problems TRS guide
No Action
4
0.9k – 1.1k
If lower or higher then go to:
Hands-Free (PHF) Aux Microphone
Problems TRS guide
No Action
5
0.9k – 1.1k
If lower or higher then go to:
Hands-Free (PHF) Aux Earphone
Problems TRS guide
No Action
6
0.9k – 1.1k
If lower or higher then go to:
Hands-Free (PHF) Aux Earphone
Problems TRS guide
No Action
7
0L
Not Connected
Not Connected
8
400k – 700k
If lower or higher then go to:
Hands-Free (PHF) Connection
Problems TRS guide
No Action
9 GND
If lower or higher then go to:
Charging Problems TRS guide
No Action
10
35k – 0L
If lower or higher then go to:
Data Communication Problems
TRS guide
No Action
11
250k – 360k
If lower or higher then go to:
Data Communication Problems
TRS guide
No Action
12
85k – 110k
If lower or higher then go to:
Charging Problems TRS guide
No Action
Current Consumption Test
Step 1:
Insert a Local SIM Card and use the phone with the Signalling SW (SSW).
Use Dummy Battery connected to Power Supply Channel 1 (VBATT).
Instrument settings: Voltage: 3.8 Volt, Limiter 3A.
Note!
The Dummy Battery should have approximately 27K Ohm resistance between
GND and BDATA.
Measure the current consumption when the 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 the phone is 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 ETS 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
Limits GSM 850 MHz
-
Transmitter Current Limits: 320mA
-
Tolerance: ±20%
SEMC Troubleshooting Manual
33
(125)
