Sony Ericsson C905 Schematics
SEMC Troubleshooting Manual
C905
Troubleshooting Manual
C905
1222-9526 rev. 1
APPENDIXCOMPONENT OVERVIEW FUNCTIONAL OVE R VIEWABOUTABOUT TROUBLESHOOTING MEASUREME NT POINTS
1 (124)
ABOUT
Con tents
SEMC Troubleshooting Manual
C905
ABOUT
General information
The purpose of this document is to provide enhanced technic al information for Sony Ericsson
repair technicians in order to assist during service, repair and troubleshooting operations on Sony
Ericsson mobile phones. It should be used as a c omplement to other repair instructions and tools
as notifi ed by the local Sony Ericsson representative.
To search for components throughout the entire document use the “search” function in Adobe
Acrobat Reader 7.0 (or later version) and enter the component name or other word. Use zoom to
enlarge.
For easier navigation of the document you can use the bookmarks that appear in the Bookmarks
tab on the left side of the Adobe Acrobat Reader window. Each bookmark jumps to a page in the
document.
Disclaimer
This document is Sony Ericsson confi dential and should be treated as confi dential in accordance
with the agreement with Sony Ericsson. This document is intended for use by authorized ser vice
technicians only. Sony Ericsson is not to be held responsible for any damages or losses caused
intentionally or unintentionally due to unauthorise d use of the information in this document.
Revision History
Rev. Date Changes / Comments
112/05/2008Initital revision.
ABOUT 2
Contents 2
Equipme nt L ist 3
TROUBLESHOOTING 8
Power On/Off Problems 8
USB and Software Flash Problems 8
Dead Phone Problems 9
Display Problems 10
Display Illumination Problems 11
Opto Sensor Problems 11
On- Off Key Problem s 12
Numeric Keypad &
Camera Snap But to n Pr ob le ms 12
Navigation Keypad & Game B utton Problems 13
Vol um e Button Prob le ms 13
Camera Play and Mode But to n Pr ob le ms 14
Numeric Keypad LED Proble ms 14
Navigation Keypad LED Problem s 15
Auto Focus LED Problems 15
Back Side LED Problems 16
Tally LED Problems 16
Camera Snap But to n LED Pro b le ms 17
Camera Navigation LED Problems 17
Trickle Charge LED Problems 18
Xenon Flash Problems 18
Multimedia Comb o Chip Pro bl em s 19
Camera Problems 19
Camera Cover Detec t Pro b le m s 20
TV Out Pro b le m s 20
Charging Problems 21
USB/VBUS Charging Problems 21
SIM Problems 22
Memor y S t i c k Pr o bl em s 22
Primary & Se condary M i c Pro b lem s 23
Ear Speaker Problems 23
Loudspeaker Problems 24
Handsfree (PHF) Problems 24
FM Radio Problems 25
FM Radio Antenna Problems 25
Bluetooth Problems 26
WLAN Problems 26
GSM Problems 27
WCDMA I, II and V Pro bl em s 27
WCDMA VIII Problems 28
A-GPS Problems 28
Accelerometer Problems 29
Vibrator Problems 29
Real Time Clock Probl em s 30
Slide Sensor Problems 30
System Connector Protection Test 31
Current Consumption Test 31
Backup Capacitor Test 33
Charging Test 33
ASIC Revision Test 34
Measurement Points Pictures 35
MEASUREMENT POINTS 52
Front S ide 52
Back Side 53
Top Schematic 54
Audio Top 55
Audio Analog 56
Audio Digital 57
Audio FM Radio 58
Applicatio n & S ystem Performance Top 59
System Top 60
System Control - Clo c ks & Re s ets 61
System Memories 62
System PoP IF 63
Power Top 64
Power Regulators & Charging 65
Power Imaging 66
Power ASICs 67
Power WL AN 68
Connectivity Top 69
Connectivity I2C & ADC 70
Connectivity Cards 71
Connectivity 72
Connectivity Keypad 73
Connectivity Video Compani on Chip 74
Imaging Top 75
Imaging Display 76
Imaging Camera 7 7
Imaging LMU & Flash 78
Access Top 79
Access GS M & UMTS 80
Access Blueto ot h 81
Access AGPS 82
Access WLAN 83
Test 84
COMPONENT OVERVIEW 85
Front S ide 85
Back Side 86
FUNCTIONAL OVERIEW 87
Technical Description 87
Platform Block Diagram 99
Block Diagram Power Distribution 100
Block Diagram Cloc k in g C oncept 101
APPENDIX 102
Replaceable Parts 102
Components - L2200, L4201-04 103
Components - L2406, L420 0 103
Components - N1210, N1211 104
Components - N1510, N2200 104
Components - N1300, N22 06 105
Components - N2212, N2213 105
Components - N2300, N2410, N2411 106
Components - N2420, N2421, N2422 107
Components - N 2500, N2700, N 3100 108
Components - N3101, N4400, S2415 109
Components - V2200, V2202 109
Components - V2412, V2417 109
Components - V2414-16, V2470, V4201 110
Components - V4203, X1200, X1210-11 110
Components - X1540, X22 01 111
Components - X2401, X2402 111
Components - X2410, X4200, X43 00 112
Components - X4311-15, X4400 112
Components - X4410, Z240 0, Z4200-02 113
Keyboa rd FPC S chema tics 114
Troubleshooting Software Document at i o n 115
Troubleshooting Fixture Setup Instructions 122
ABOUT
1222-9526 rev. 1
2 (124)
TROUBLESHOOTING
f
Equip ment List
SEMC Troubleshooting Manual
C905
C905 Equipment List
Note! Additional information about the equipment used for TRS can be found in the following
locations:
Location 1: CSPN – Repair Instructions – Additional Soldering Process – C905, C905a or C905c –
Equipment List.
Location 2: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pd
or matris.xls – C Model Tab.
Troubleshooting Fixture
Location: CSPN – Repair Instructions – Additional Soldering Process – C905, C905a or C905c –
Equipment List.
Part number: 1218-4986
Note! Additional information about the TRS Fixture Kit can be found in the Trouble Shooting
Fixtures Setup Instructions document which is included in the appendix of this manual.
Dummy Battery
Location: CSPN – Repair Instructions – Additional Soldering Process – C905, C905a or C905c –
Equipment List.
Part number: 1208-5627
Power Supply Channel 2 (DCIO/SEPI)
Agilent 6632B or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Instrument Settings:
Voltage: 5.0 Volt
Limiter: 2.0 A
Oscilloscope
Agilent DSO7052A or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Digital Multimeter (DMM)
Fluke 83 or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Note! The 0, 64 mm Test Probes is recommended by Sony Ericsson when DMM is in use
see Picture 1.
Picture 1
Spectrum Analyzer
R&S FSL 9 kHz – 3 GHz or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
RF probe
HP 85024A or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Mobile Phone Tester
Yokogawa VC200 or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
FM Signal Generator
R&S SMC100A or similar
Location: -
TROUBLESHOOTING
Note! The resistance between GND and BDATA should be approximately 27K Ohm.
Instruments
Power Supply Channel 1 (VBATT)
Agilent 6632B or similar
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Instrument Settings:
Voltage: 3.8 Volt
Limiter: 2.0 A
Note! Maximal cable length between the Power Supply Channel 1 VBATT and the dummy battery
cannot be more than 1 meter. The cable must be able to handle at least 16A.
1222-9526 rev. 1
3 (124)
TROUBLESHOOTING
Equipment List
SEMC Troubleshooting Manual
C905
RF Adaptor
Adaptor 33 N-BNC-50-1
Adaptor to Signal Generator RF Output
See Picture 2
Location: -
Picture 2
PC Package & PC Software
PC Package (Computer)
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Urquell Fault Trace SW with project file
Location: CSPN – Repair Instructions - Electrical – C905, C905a or C905c – Trouble Shooting
Application
Project File: C905, C905a, C905c Project_R1A
Cables
USB Computer Cable
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – Re
See Picture 4.
Picture 4
DSU-60/USB Cable
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – Re
Part number: KRY 101 1413
RF Test Cable Flexible
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – Re
Part number: RPM 119 885
See Picture 5.
Picture 5
TROUBLESHOOTING
Drivers
SEPI BOX Drivers
Location: http://emma.extranet.sonyericsson.com
SE Communication Interface SEPI BOX
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: LTN 214 1484
See Picture 3.
Picture 3
– Drivers – DSS / SEPI / SEMUTS
SEPI Interface Cable – A1
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – Re
Part number: KRY 101 1119/1
See Picture 6.
Picture 6
1222-9526 rev. 1
4 (124)
TROUBLESHOOTING
Equipment List
SEMC Troubleshooting Manual
C905
Power Cable RED to Power Supply Channel 1 (VBATT)
Maximum Length: 1m
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Power Cable BLACK to Power Supply Channel 1 (VBATT)
Maximum Length: 1m
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Customized Power Supply Channel 2 Cable (DCIO/SEPI)
Customize the cable according to following instructions below:
(Step 1, Step 2, Step 3 and Step 4)
Step 1:
Take the CST-75 battery charger and cut of the charger according to Picture 7.
Picture 7
Step 3:
Cut off insulating material from the inside of the charger plug according to Picture 9.
Picture 9
TROUBLESHOOTING
Step 4:
Connect DCIO Cable and SEPI Interface Cable – A1 according to Picture 10.
Picture 10
Note! The Cable length must be exactly 1.3 meters.
Step 2:
Connect the CST-75 charger Red or White wire to the Plus Output and the Black wire to the Minus
(GND) Output at backside of the Power Supply Channel 2 (DCIO/SEPI) according to Picture 8.
Picture 8
Picture 11
Note! The setup example presented in the Picture 11 is wrong!
1222-9526 rev. 1
5 (124)
TROUBLESHOOTING
Equipment List
SEMC Troubleshooting Manual
C905
Connection Instructions for the Dummy Battery
This is the correct setup when using the Dummy Battery.
See Pictures 12 and 13.
Picture 12
Picture 13
Step 2:
Cut the Red Lab Plug connector according to Picture 15.
Picture 15
TROUBLESHOOTING
Step 3:
Use any Hands-Free (PHF) Cable and cut it according to Picture 16.
Picture 16
Customized FM Radio Cable
Step 1:
Use the Test lead BNC-4mm 1,5m Cable, see Picture 14.
Picture 14
Product Name: Test lead BNC-4mm 1,5m
Product Description: Test lead with 4 mm lab plugs at one end and a BNC plug at the other.
Manufacturer: PMK Germany
Location: http://www.elfa.se/en/
or other supplier.
Part number: 46-310-40
Note! This is the ELFA part number.
Note! Cable length should be at least 40 cm.
Step 4:
Only use the Wire that is connected to PIN2 and cut out all others according to Picture 17.
Picture 17
Note! Use DMM instrument to ensure which of the wires are connected to PIN2 at Hands-Free
(PHF) system connector plug.
1222-9526 rev. 1
6 (124)
TROUBLESHOOTING
Equipment ListEquipment ListEquipment List
SEMC Troubleshooting Manual
C905
Step 5:
Connect the Cable from the Picture 15 and Cable from the Picture 17 according to Picture 18.
Note! Use a soldering iron for this action and then use insulating material to protect the contact
point.
Picture 18
Test Cards
Local SIM
Any functional Local SIM Card
See Picture 19.
Picture 19
Sony Memory Stick M2
Any functional Memory Stick Micro M2 Card
See Picture 21.
Picture 21
TROUBLESHOOTING
SMK RF Probe
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – Re
Part number: SXA 109 6356
See Picture 22.
Picture 22
Test SIM GSM/UMTS
One Test SIM GSM/UMTS is needed to perform Current Consumption Test, see Picture 20.
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Note! To buy a Test SIM GSM/UMTS, please contact your supplier of test equipment.
Picture 20
1222-9526 rev. 1
7 (124)
TROUBLESHOOTING
Power On/Off Problems - US B a nd S o ftware Flash Problems
SEMC Troubleshooting Manual
C905
START
Use
Dummy Battery
Connected to
Power Supply Channel 1
(VBATT)
No
Is the
phone consuming
any current when
powering on the
phone
Power On/Off Problems
Is the phone
consuming more than
1mA when the phone
is powered off
No
Is it possible to
power on the phone
Connect a chargerNo
Yes
Yes
Is it possible to power
off the phone
Is the phones
behavior as normal
Optimized
charging
Yes
No
Yes
Go to
Dead phone
Problems part 1
TRS guide
Go to
Current
Consumption Test
After this go to
Charging Test
Go to
On-Off Key Problems
TRS guide
START
Step 1:
Perform
System Connector Protectio n Test
If successful go to step 2.
Step 2:
Load ITP SW into the Phone
Go to
USB/VBUS
Charging Problems
USB and Software Flash Problems
Does the
Flash process
Start-up when using
EMMA SW
No
Use TRS Fixture
1: Connect: VBATT and DCIO/SEPI
2: Remove: DCIO/SEPI
3: Connect: USB Cable from the PC
Does
the Phone
Indicate charging
on the display
Yes
TROUBLESHOOTING
Is the
No
YesNo
ITP SW Flash
Successful
Is
MP X2405_Pin 10
Short circuit to the
PBA GND
(Shield
Can Fence)
Yes
Yes
SL 5 Replace
N2010
SL 4 Escalate
Replace
V2415
Yes
Is the current
consumption between
10mA to 70mA
Yes
Flash
the phone with
correct CDA
software
No
Flash
the phone with
correct CDA
software
CDA Software
Flash
Successful
Yes
Yes
No
No
Go to
Dead Phone
Problems part 1
TRS guide
Press ”C”
Connect USB from PC
Run SEMC BOOT
if necessary
Run SUCR SW
Is Phone Flash
OK
No
Is the
Flash process
started
Yes
System Connector
Protection Test
No
After this go to
USB and Software
Flash Problems TRS
Go to
guide
SL 4 Replace
N2420
SL 5 Replace
R2442
No
5 Volt DC at
MP 6 (C2433)
Yes
2.7V – 3.3V DC
at MP 9 (C2436) and
1.8V DC at MP 7
(C2435)
Yes
Disconnect:
VBATT and USB Cable
Max
2 Ohm between
MP X2405_Pin 11 and
MP 10 (Z2400_Pin 3)
No
No
No
No
Is the
MP X2405_Pin 11
Short circuit to the PBA
GND (Shield
Can Fence)
1.8 Volt DC at
MP 8 (R2431)
Max
0.5 Ohm between
MP X2405_Pin 11 and
MP 13 (Z2400_Pin 2)
Yes
Yes
No
No
Replace
V2416
SL 5 Replace
N2010
SL 4 Escalate
Replace
N2420
Replace
X2405
Flash
The phone with
ITP software.
Is the ITP Flash
Successful
No
Go to
USB and Software
Flash Problems
TRS guide
No
1. Customize the phone into DPY/Z
2. Startup the phone and wait for
the configuration to take place
(takes less than a minute)
3. Customize with correct CDA
4. Activate the phone
Is the Problem
solved
NoYes
Yes
Is the Problem
solved
Yes
Claim for a
SW Upgrade
SL 4 Replace
N2420
SL 5 Replace
N2010
Yes
Yes
Max
2 Ohm between
MP X2405_Pin 10 and
MP 12 (Z2400_Pin 4)
No
Max
0.5 Ohm between
MP X2405_Pin 10 and
MP 11 (Z2400_Pin 1)
Yes
No
Yes
1222-9526 rev. 1
Replace
Z2400
Replace
X2405
Replace
Z2400
8 (124)
TROUBLESHOOTING
Dead Phone Problems
SEMC Troubleshooting Manual
C905
START
Try to recover the phone by using
Run SEMC BOOT if necessary
If successful claim SW Flash
If not continue with the step 2.
Try to trace Faulty
Component by using
Step 1:
EMMA SW
Press ”C”
Connect USB from PC
Run SUCR SW
Step 2:
Use TRS Fixture
Connect Only: VBATT
Replace
N1200
SL 5 Replace
N2000
SL 4 Escalate
Freezing Spray
SL 5 Replace
N2000
SL 4 Escalate
Yes
No
Dead Phone Problems part 1
Is the
current consumption
more than 1mA
Yes
Try to trace
Faulty Component
by using Freezing Spray
Is the
Radio Module
N1200 (Tiger)
getting hot
No
SL 5 Remove
N2000
SL 4 Escalate
Is the
current consumption
still more than
1mA
Yes
1.8V DC
At MP 164
(ST2203 VDDE18) and 2.8V
DC at MP 163 (C1218
LDOA_OUT)
Yes
No
NoNo
Is the
connection between
MP 137 (X2201_Pin 3)
and PBA GND (Shield
Can Fence)
Ok
Yes
Connect:
DCIO/SEPI to the Phone
32 kHz at
MP 136 (C2100) and
MP 138 (C2101)
Yes
32 kHz
RTCCLK at
MP 135 (ST2104)
Yes
26 MHz
MCLK at
MP 38 (R2102)
SL 4 Replace
No
No
No
2.6V MP 125 (ST2201 VAUDIO26)
2.5V MP 165 (ST2202 VANA25)
Yes
2.7V MP 127 (ST2204 VBT27)
2.7V MP 126 (ST2205 VDIG)
2.6V MP 124 (ST2206 VBEAR26)
1.2V MP 116 (ST2209 VCORE12)
1.8V MP 40 (ST2225 VCORE18
X2201
SL 5 Replace
R2200
Replace
B2100
SL 5 Replace
N2000
SL 4 Escalate
Check the following
Voltages:
and VMEM18)
Is the
VAUDIO26
Voltage
Ok
Yes
Is the
VANA25
Voltage
Ok
Yes
Is the
VBT27
Voltage
Ok
Yes
Dead Phone Problems part 2
START
Before following this guide the
Dead Phone Problems part 1 TRS guide
No
No Yes
No
NOTE !
must be finishe d
Is any of
N2422 or N3103
getting hot
Is any of
N2200 or N2010
getting hot
Is N1300
getting hot
Yes
No
No
Yes
No
TROUBLESHOOTING
SL 4 Replace
N2422
SL 5 Replace
N3103
SL 5 Replace
N2000
SL 4 Escalate
SL 4 Replace
N2200
SL 5 Replace
N2010
SL 5 Replace
N2000
SL 4 Escalate
Replace
N1300
SL 5 Replace
N2000
SL 4 Escalate
Replace
N1200
Replace
N1211
SL 5 Replace
N2020
SL 4 Escalate
Go to USB and
Software Flash
Problems TRS guide
Yes
Yes
at MP 65 (C1207)
(If C905c skip this
No
ITP SW Flash
No
2.8V DC
and replace
N1200)
Is the
Successful
Go to
Dead Phone
Problems part 2
Step 1:
Disconnect:
VBATT and DCIO/SEPI
Step 2:
Connect:
Key Flex Assy and Slider FPC Assy
to the PBA
Connect: VBATT Only
Step 3:
Use EMMA SW
Press the ”C” key and Connect
USB Cable from the PC to the PBA
Flash the Phone with ITP SW
No
Is the
all Voltages
Ok
Yes
Is the
VDIG
Voltage
Ok
Yes
Is the
VBEAR26
Voltage
Ok
Yes
No
No
Is any of
N2411, N1300
N1500 or N1510 getting
hot. (Note: The N1500
is missing on
C905c)
SL 5 Replace
N2000
SL 4 Escalate
Go to
Dead Phone
Problems part 3
No
Yes
SL 4 Replace
N2411, N1300
or N1510
SL 5 Replace
N1500
SL 5 Replace
N2000
SL 4 Escalate
1222-9526 rev. 1
9 (124)
TROUBLESHOOTING
Dead Phone Problems - Display Problems
SEMC Troubleshooting Manual
C905
Is the
VCORE12
Voltage
Ok
No
Dead Phone Problems part 3
START
Before following this guide the
Dead Phone Problems part 2 TRS guide
1.1V – 1.2V DC
at MP 115
(V2201_Cathode)
Yes
NOTE !
must be finished
No
3.8 Volt DC at
MP 114 (L2201)
Yes
No
Replace
L2201
SL 5 Replace
V2201 or N2000
SL 4 Escalate
Display Problems
START
Step 1:
Flash the Phone with EMMA SUCR SW
If successful claim SW Flash
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Use TRS Fixture
Connect:
PBA Key Flex Flip, Slider FPC Assy and Display
to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Display Pattern
Activate:
TV Test Pattern
If Display is working on the TRS Fixture
then Replace
Display, PBA Key Flex Flip or Slider FPC Assy
If not then continue with
Display illumination Problems TRS guide
TROUBLESHOOTING
Yes
Is the
VCORE18/VMEM18
Voltage
Ok
Yes
Step 1:
Disconnect:
VBATT and DCIO/SEPI
Step 2:
Connect:
Key Flex Assy and Slider FPC Assy
to the PBA
Connect: VBATT Only
Step 3:
Use EMMA SW
Press the ”C” key and Connect
USB Cable from the PC to the PBA
Flash the Phone with ITP SW
No
Is
MP 116 (ST2209)
Short circuit to the
PBA GND (Shield
Can Fence)
1.8 Volt DC at
MP 40 (ST2225)
No
Is
MP 40 (ST2225)
Short circuit to the
PBA GND
ITP SW Flash
(Shield
Can Fence)
Is the
Successful
No
No
No
Yes
Yes
Yes
Yes
SL 5 Replace
N2000 or N2010
SL 4 Escalate
Replace
L2200
SL 5 Replace
N2010
SL 4 Escalate
SL 4 Replace
N2200
SL 5 Replace
N2010
SL 4 Replace
N2200
SL 5 Replace
L2202
SL 5 Replace
N2020
SL 4 Escalate
Go to USB and
Software Flash
Problems TRS guide
Go to
Dispaly illumination
Problems TRS guide
Go to
Opto Sensor
Problems TRS guide
Replace
Z4200, Z4201 or
Z4202
No
Yes
No
Is the
Display Backlights
Ok
Yes
Is the picture
too dark or
too light
Are all
Display Filters
Ok
Yes
Replace
X4200
Is the Display
Problem solved
No
Disconnect: VBATT and DCIO/SEPI and
Remove PBA from the TRS Fixture
Use Digital Multimeter instrument (DMM)
No
Be very careful when you're cutting the
Shield Can Fence to avoid component damage
It is recommended to use microscope for these
Max 2 Ohm between the following pins:
Test 1 and 2 must be made on all filters
Yes
Claim Component
X4200
SL 5 Replace
N2010
SL 4 Escalate
and perform:
Z4200, Z4201 and Z4202
Display Filter Test 1 and 2
NOTE !
measurements
Z4200, Z4201 and Z4202
Display Filter Test
Check if Pins: 1,2,3,4,5,6,7,8
are NOT
Test 1:
short circuit to GND
Test 2:
Pin 1 and 5
Pin 2 and 6
Pin 3 and 7
Pin 4 and 8
NOTE !
1222-9526 rev. 1
10 (124)
TROUBLESHOOTING Display Illumination Problems
- Opto Sensor Problems
SEMC Troubleshooting Manual
C905
Replace
V4201
Yes
Display Illumination Problems
START
Step 1:
Flash the Phone with EMMA SUCR SW
If successful claim SW Flash
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Use TRS Fixture
Connect:
PBA Key Flex Flip, Slider FPC Assy and Display
to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Display Backlight
If Display Backlight is working on the TRS Fixture
then Replace
Display, PBA Key Flex Flip or Slider FPC Assy
If not then continue with the
Display ilumination Problems TRS guide
1: Ues Fault trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Deactivate:
Display Backlight
2: Disconnect Slider FPC Assy from the PBA
Go to
Dispaly illumination
Problems TRS guide
Go to
Display Problems
TRS guide
Opto Sensor Problems
START
Replace PBA Key Flex Flip
If successful claim PBA Key Flex Flip
Replace Slider FPC Assy
If successful claim Slider FPC Assy
Opto Sensor Problems TRS guide
No
No
Step 1:
and retest the Phone
if not go to step 2.
Step 2:
and retest the Phone
if not continue with the
Is the
Display
Illumination (LEDs)
Ok
Yes
Can you see
any picture on
Display
Yes
TROUBLESHOOTING
3.7V - 3.8V DC
at MP 119
(V4201_Anode)
No
Replace
L4200
Replace
X4200
Yes
0 Volt DC at
MP 52 (TP4201)
No
No
Yes
3.7V - 3.8V DC
at MP 51 (TP4200)
Yes
Fault trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Display Backlight
17V - 20V DC at
MP 51 (TP4200)
No
Replace
V4200
Yes
More than
4 Volt DC
Pk-Pk Pulses
at MP 117
(V4200_Pin 3)
No
SL 5 Replace
N2000
SL 4 Escalate
Replace
N2201
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
1.8 Volt DC at
MP 73 (R2217
No
No
OPTO_EN)
Shortly after phone
Power On
Yes
3 Volt
Pk-Pk Pulses at
MP 59 (TP2203
VOPTO30) Shortly after
phone Power On
Yes
Replace
X4200
Replace
V4203
Is the
Display illumination
Problem solved
Yes
No
SL 5 Replace
N2000
SL 4 Escalate
Claim Component
V4203
SL 5 Replace
N2000
SL 4 Escalate
No Yes
Is the
Opto Sensor Problem
solved
Claim Component
X4200
1222-9526 rev. 1
11 (124)
TROUBLESHOOTING On-O ff Key -
Numeric Keypad & Camera S n ap B u tt on Proble m s
SEMC Troubleshooting Manual
C905
START
Step 1:
Replace PBA Key Flex Flip and retest the Phone
If successful claim PBA Key Flex Flip
if not go to step 2.
Step 2:
Replace Slider FPC Assy and retest the Phone
If successful claim Slider FPC Assy
if not go to step 3.
Step 3:
Use TRS Fixture
Connect:
PBA Key Flex Flip and Slider FPC Assy to the PBA
Connect: VBATT and DCIO/SEPI
Replace
V2470
SL 5 Replace
R2470, V2480 or
N2010
SL 4 Escalate
On-Off Key Problems
Yes
1.8 Volt DC at
MP 5 (R2470)
No
Yes
Is the
Problem with
Power Off
No
Numeric Keypad and Camera Snap Button Problems
START
Step 1:
If Problem with both Numeric and Navigation Keypads
go to step 3, if not go to step 2.
Step 2:
Use TRS Fixture
Connect:
Numeric Key Foil to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate
Keypad Scan Test
Perform Keypad Scan Test by pressing all
Keypads and Camera Snap Button on Numeric Key Foil
If successful then
Replace
Numeric Key Foil
If not go to step 3.
Step 3:
Use TRS Fixture
Connect:
Numeric Key Foil to the PBA
Connect: VBATT and DCIO/SEPI
and continue with the
Numeric Keypad and Camera Snap Button Problems
TRS guide
1.8 Volt DC at
MP 82 (S2415_Pin A) and
MP 88 (S2424_Pin A)
Yes
1.8 Volt DC at
MP 96 (S2453_Pin A) and
MP 94 (S2454_Pin A)
Yes
Play and Mode (REC)
No
No
Button Problems
Up and Down Button
Problems TRS guide
TROUBLESHOOTING
Go to Camera
TRS guide
Go to Volume
Replace
X4200
SL 5 Replace
N2000
SL 4 Escalate
No
0 Volt DC at
MP 60 (C2472)
Yes
Press the
On/Off Key
SL 5 Replace
R2470 or N2010
SL 4 Escalate
No
Yes
3.7 Volt DC at
MP 60 (C2472)
No
Disconnect:
Slider FPC Assy
from the PBA
1.8 Volt DC at
MP 5 (R2470)
Yes
Replace
X2410 or X2411
Go to
Navigation Keypad
and Game A and B
Button Problems
TRS guide
Flash the Phone with
EMMA SUCR SW
1: Disconnect:
VBATT and DCIO/SEPI
2: Disconnect:
Numeric Key Foil
from the PBA
Yes
No
Is the
problem with
Numeric Keypad and
Camera Snap
Button
No
Yes
0 Volt DC
when pressing
Key ”3" at MP 5 (R2470)
Key ”6" at MP 4 (R2471)
and Key ”1" at
MP 39 (R2472)
No
Yes
Is the
Problem with
both Numeric and
Navigation
Keypads
Yes
1.8 Volt DC at
MP 76
(V2481_Cathode)
Yes
1.8 Volt DC at
MP 5 (R2470), MP 4
(R2471) and MP 39
(R2472)
No
No
SL 5 Replace
V2481
SL 4 Escalate
Replace
X4200
SL 4 Replace
V2470
SL 5 Replace
N2000
Yes
No
3.7 Volt DC at
MP 60 (C2472)
Is
MP 157 (C2461),
MP 158 (C2462), MP 159
(C2464) Short Circuit to GND
(Shield Can
Fence)
No
Yes
SL 5 Replace
V2486,
V2487 or V2484
SL 4 Escalate
SL 5 Replace
N2010
SL 4 Escalate
Is
MP 5 (R2470)
MP 4 (R2471), MP 39 (R2472)
Short Circuit to GND
(Shield Can
Fence)
No
SL 5 Replace
Yes
V2480,
V2473 or V2479
SL 4 Escalate
SL 5 Replace
R2470, R2471 or
R2472
SL 4 Escalate
1222-9526 rev. 1
12 (124)
TROUBLESHOOTING
N avigat io n Keypad & Game B ut to n - Volume Butto n Proble m s
SEMC Troubleshooting Manual
C905
Navigation Keypad and Game A and B Button Problems
START
Step 1:
Use TRS Fixture
Connect:
PBA Key Flex Flip and Slider FPC Assy to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate
Keypad Scan Test
Perform Keypad Scan Test by pressing all Keypads and
Game A and B Buttons on Key Flex Flip Assy
If successful then
Replace
PBA Key Flex Flip or Slider FPC Assy
If not go to step 2.
Step 2:
Continue with the
Navigation Keypad and Game A and B Button Problems
TRS guide
Connect: VBATT and DCIO/SEPI
Replace
S2453
SL 5 Replace
N2010
SL 4 Escalate
SL 5 Replace
R2473 or N2010
SL 4 Escalate
Volume Up and Down Button Problems
START
Use TRS Fixture
No
No No
0 Volt DC at
MP S2453_Pin A and
MP S2453_Pin B
Yes
Are
MP 96 (S2453_Pin A)
and MP 97 (S2453_Pin B)
short circuit to the PBA GND
(Shield Can
Fence)
Press the
S2453 Volume Up
Button
Yes
1.8 Volt DC at
MP 96 (S2453_Pin A) and
MP 97 (S2453_Pin B)
Yes
TROUBLESHOOTING
Is
the problem with
S2453 Volume Up
Button
Replace
X4200
Is the
Numeric Keypad
and Camera Snap
Button
Ok
Yes
Go to
NoYes
Numeric Keypad and
Camera Snap Button
Problems TRS guide
Remove the
S2453 Volume Up
Button
No
Are
SL 5 Replace
V2474 or V2478
SL 4 Escalate
Replace
S2454
Yes
No
MP 96 (S2453_Pin A)
and MP 97 (S2453_Pin B) still
short circuit to the PBA GND
(Shield Can
Fence)
0 Volt DC at
MP 94 (S2454_Pin A) and
MP 95 (S2454_Pin B)
No
Replace
S2453
Press the
S2454 Volume Down
Button
Yes
1.8 Volt DC at
MP 94 (S2454_Pin A) and
MP 95 (S2454_Pin B)
SL 5 Replace
N2010
SL 4 Escalate
Yes
No
Replace
S2454 and S2424
SL 5 Replace
V2477,V2476
or V2472
SL 4 Escalate
No
Are
MP 94 (S2454_Pin A)
and MP 95 (S2454_Pin B) still
short circuit to the PBA GND
(Shield Can
Fence)
Yes
Remove the
S2454 Volume Down and
S2424 Camera Play
Buttons
SL 5 Replace
R2474 or N2010
SL 4 Escalate
Yes
and MP 95 (S2454_Pin B)
short circuit to the PBA GND
No
1222-9526 rev. 1
Are
MP 94 (S2454_Pin A)
(Shield Can
Fence)
13 (124)
TROUBLESHOOTING Camera Play and Mode Button
- Numeric Keypad LED Proble ms
SEMC Troubleshooting Manual
C905
Connect: VBATT and DCIO/SEPI
SL 5 Replace
N2010
SL 4 Escalate
START
Use TRS Fixture
Yes
Camera Play and Mode (REC) Button Problems
Go to Volume
Up and Down Button
Problems TRS guide
0 Volt DC at
MP 82 (S2415_Pin A)
and MP 84
(S2415_Pin B)
S2415 Camera Mode (REC)
Press the
Button
No
1.8 Volt DC at
MP 96 (S2453_Pin A)
and MP 94
(S2454_Pin A)
Yes
Numeric Keypad LED Problems
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: Numeric Key Foil to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Keypad LED
If Keypad LED is working on the TRS Fixture
then Replace Numeric Key Foil
If not then continue with the
Numeric Keypad LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Disconnect:
Numeric Key Foil
TROUBLESHOOTING
Replace
S2415
SL 5 Replace
N2010
SL 4 Escalate
SL 5 Replace
V2475 or V2471
SL 4 Escalate
No
Yes
No
Is the
MP 82
(S2415_Pin A)
and MP 84 (S2415_Pin B)
Short circuit to GND
(Shield Can
Fence)
Yes
Remove the
S2415 Camera Mode (REC)
Button
Is the
MP 82
(S2415_Pin A)
and MP 84 (S2415_Pin B)
still Short circuit to GND
(Shield Can
Fence)
No
No
Yes
1.8 Volt DC at
MP 82 (S2415_Pin A)
and MP 84
(S2415_Pin B)
Replace
S2415
No
Is there
a problem with
S2424 Camera Play
Button
Yes
Max 1 Ohm
between MP 74
(R4401) and MP 72
(C4401)
Yes
Connect: VBATT and DCIO/SEPI
Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Keypad LED
5 Volt DC at
MP 56 (TP4400)
Yes
No
No
SL 5 Replace
L4400
SL 4 Escalate
Replace
N4400
Replace
S2424
SL 5 Replace
N2010
SL 4 Escalate
No
0 Volt DC at
MP 88 (S2424_Pin A)
and MP 90
(S2424_Pin B)
Yes
Press the
S2424 Camera Play
Button
SL 5 Replace
V2482
SL 4 Escalate
Yes
1.8 Volt DC at
MP 88 (S2424_Pin A)
and MP 90
(S2424_Pin B)
No
Replace
X2410
Yes
Fault Trace SW
Deactivate:
Keypad LED
3.8 Volt DC
at MP 160 (C2473)
No
SL 5 Replace
N2000
SL 4 Escalate
1222-9526 rev. 1
14 (124)
TROUBLESHOOTING Navigation Keypad LED Problems
- Auto Focus LED Problems
SEMC Troubleshooting Manual
C905
Navigation Keypad LED Problems
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: PBA Key Flex Flip and Slider FPC Assy
to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Keypad LED
If Navigation Keypad LED is working on the TRS Fixture
then Replace
PBA Key Flex Flip or Slider FPC Assy
If not then continue with the
Navigation Keypad LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Remove the PBA from the TRS Fixture
Auto Focus LED Problems
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: Flash Complete to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Auto Focus LED
If Auto Focus LED is working on the TRS Fixture
then Replace Flash Complete
If not then continue with the
Auto Focus LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
TROUBLESHOOTING
Max 1 Ohm
between MP 74
(R4401) and MP 72
(C4401)
Yes
1: Cut the Shield Can Fence around the N4000, be very careful
to avoid component damage.
2: Use TRS Fixture
Connect: PBA Key Flex Flip and Slider FPC Assy to the PBA
Connect: VBATT and DCIO/SEPI
3: Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Keypad LED
No
SL 5 Replace
L4400
SL 4 Escalate
Max 1 Ohm
between MP 74
(R4401) and
MP 72 (C4401)
Yes
Connect: VBATT and DCIO/SEPI
Connect: Flash Complete to the PBA
Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Auto Focus LED
5 Volt DC at
MP 56 (TP4400) when
Auto Focus LED is
Activated
Yes
No
No
SL 5 Replace
L4400
SL 4 Escalate
Replace
N4400
Replace
X4200
5 Volt DC at
MP 56 (TP4400)
Yes
1.7V – 3V DC at
MP 78 (R4403), MP 77
(R4404), MP 75 (R4405)
and MP 79 (R4406)
No
NoYes
Replace
N4400
SL 4 Replace
N4400
SL 5 Replace
L4401
Is the
Problem solved
No
Yes
1.4V - 1.5V DC
at MP 93 (TP4401)
when Auto Focus LED
is Activated
Claim Component
N4400
SL 5 Replace
N2010
SL 4 Escalate
YesNo
Replace
X4400
1222-9526 rev. 1
15 (124)
TROUBLESHOOTING Back Side LED Problems
- Tally LED Problems
SEMC Troubleshooting Manual
C905
Back-Side LED Problems
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: Flash Complete to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Back-Side LED
If the Back-Side LED is working on the TRS Fixture
then Replace Flash Complete
If not then continue with the
Back-Side LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Disconnect:
Flash Complete from the PBA
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: Flash Complete to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Tally LED
If Tally LED is working on the TRS Fixture
then Replace Flash Complete
If not continue with the
Tally LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Max 1 Ohm
between
MP 74 (R4401) and
MP 72 (C4401)
Tally LED Problems
SL 5 Replace
No
L4400
SL 4 Escalate
TROUBLESHOOTING
Max
1 Ohm between
MP 74 (R4401) and
MP 72 (C4401)
Yes
Connect: VBATT and DCIO/SEPI
Restart Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Back-Side LED
5 Volt DC at
MP 56 (TP4400) when
Back-Side LED
is Activated
Yes
No
No
SL 5 Replace
L4400
SL 4 Escalate
Replace
N4400
SL 4 Replace
X4400
SL 5 Replace
N2000
Replace
N2410
SL 5 Replace
V4400
SL 4 Escalate
Yes
Connect: VBATT and DCIO/SEPI
Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Tally LED
No
and MP 148 (V4400_Pin 3)
Yes
Is
any of
MP 134 (V4400_Pin 1)
Short circuit to
PBA GND (Shield
Can Fence)
Replace
X4400
Yes
No
5 Volt DC
at MP 56 (TP4400)
Yes
1.8 Volt DC
at MP 134
(V4400_Pin 1)
SL 5 Replace
V4400
SL 4 Escalate
0 Volt DC
at MP 148
(V4400_Pin 3)
No
Yes
No
Replace
N4400
Fault Trace SW:
Deactivate
Tally LED
2V – 2.5 Volt DC
at MP 148
(V4400_Pin 3)
Yes
Fault Trace SW:
Activate
Tally LED
SL 5 Replace
V4400
SL 4 Escalate
No
1222-9526 rev. 1
16 (124)
TROUBLESHOOTING Camera Snap Button LED
- Camera Navigation LE D Proble m s
SEMC Troubleshooting Manual
C905
Camera Snap Button LED Problems
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: Numeric Key Foil to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Camera LED
If Camera Snap Button LED is working on the TRS Fixture
then Replace Numeric Key Foil
If not then continue with the
Camera Snap Button LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Disconnect:
Numeric Key Foil
Camera Navigation LED Problems
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: PBA Key Flex Flip and Slider FPC Assy
to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Camera LED
If Camera Navigation LEDs is working on the TRS Fixture
then Replace
PBA Key Flex Flip or Slider FPC Assy
If not then continue with
Camera Navigation LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Disconnect:
PBA Key Flex Flip and Slider FPC Assy
from the PBA
TROUBLESHOOTING
Max
1 Ohm
between
MP 74 (R4401) and
MP 72 (C4401)
Yes
Connect: VBATT and DCIO/SEPI
Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Camera LED
5 Volt DC at
MP 56 (TP4400) when
the Camera LED is
Activated
Yes
No
No
SL 5 Replace
L4400
SL 4 Escalate
Replace
N4400
Connect: VBATT and DCIO/SEPI
Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Camera LED
5 Volt DC at
MP 56 (TP4400) when
Camera LED is
Activated
No
Replace
N4400
Yes
Max 1 Ohm
between
MP 74 (R4401) and
MP 72 (C4401)
0 Volt DC
at MP 92 (C4215) and
MP 86 (C4217) when
Camera LED is
Activated
Yes
0 Volt DC
at MP 89 (C4218)
when Camera LED is
Activated
No
SL 5 Replace
V4208
SL 4 Escalate
NoYes
No
Yes
SL 5 Replace
L4400
SL 4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
Replace
X4200
Replace
X2410
Yes
0 Volt DC
at MP 161 (C2474)
when the Camera LED
is Activated
No
SL 5 Replace
N2000
SL 4 Escalate
Is
the Camera
Navigation LED
Problem solved
No
Yes
Claim Component
V4208
SL 5 Replace
N2000
SL 4 Escalate
1222-9526 rev. 1
17 (124)
TROUBLESHOOTING Trickle Charge LED Problems
- Xenon Flash Problems
SEMC Troubleshooting Manual
C905
SL 5 Replace
N2000
SL 4 Escalate
Trickle Charge LED Problems
START
Load ITP SW into the Phone
Connect: VBATT and DCIO/SEPI
Trickle Charge LED Problems TRS guide
No Yes
Use TRS Fixture
Use Fault Trace SW
Continue with the
Fault Trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Charge LED
1.8 Volt DC
at MP 118
(V4206_Anode)
Replace
V4206
Flash the Phone with
EMMA SUCR SW
Go to Camera
Problems TRS guide
Xenon Flash Problems
Is the
Yes
No
Flash Complete and Camera 8MP to the PBA
Xenon Flash Test
Ok
No
Is the
Camera working
properly
Yes
Use TRS Fixture
Connect:
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Fault Trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Xenon Flash Test
Disconnect:
Flash Complete
Fault Trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Xenon Flash Test
START
Step 1:
Replace Flash Complete
and retest the Phone
If successful claim
Flash Complete
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Use Dummy Battery connected to the
Power Supply Channel 1 (VBATT)
Connect: DCIO/SEPI
Use Fault Trace SW
TROUBLESHOOTING
1.8V – 2V DC
at MP 149 (R4304)
Yes
Is
MP 133 (X4410)
connected to the PBA
(Shield Can
GND
Fence)
Yes
Replace
X4400
No
No
1.8 Volt DC
at MP 87 (R4303)
Replace
X4410
Is the
Xenon Flash
Problem solved
Yes
Yes
No
No
Replace
N2410
SL 5 Replace
N4300
SL 4 Escalate
SL 4 Replace
N2410
SL 5 Replace
N2010
Claim Component
X4400
1222-9526 rev. 1
18 (124)
TROUBLESHOOTING Multimedia Combo Chip Problems
- Camera Problems
SEMC Troubleshooting Manual
C905
START
Load ITP SW into the Phone
Use Dummy Battery connected
to Power Supply Channel 1
(VBATT)
Connect: DCIO/SEPI
Use Fault Trace SW
SL 5 Replace
N2010
SL 4 Escalate
Replace
N2500
No
No
Multimedia Combo Chip Problems
Fault Trace SW
General
Selftest
Run N2500 Selftest
1.8 Volt DC
at MP 68 (R2502
VIDCC_RESn)
Yes
1.8 Volt DC
at MP 71 (SP2505
VIDCC_L1DET)
2: Use Fault trace SW and go to:
N2500 Selftest
1: Use TRS Fixture
VBATT and DCIO/SEPI
Init Screen Testing
Multimedia Chip
Is the
Test result
0x0
No
Connect:
MMI
Misc
Activate:
Flash the Phone with
Yes
EMMA SUCR SW
Flash the Phone with
EMMA SUCR SW
Go to Multimedia
Combo Chip
Problems TRS guide
Yes
No
Is the
Camera working
Properly
No
Is the
Multimedia Combo
Chip Problems TRS
guide done
Yes
Camera Problems
START
Step 1:
Replace Camera 8MP and retest the Phone
If successful claim Camera 8MP
If not go to step 2.
Step 2:
Use Dummy Battery connected to the Power Supply Channel 1 (VBATT)
Load ITP SW into the Phone
Connect: DCIO/SEPI
Use Fault Trace SW
MMI
Misc
Init Screen Testing
Activate:
Camera Test
1: Use TRS Fixture
Connect: Camera 8MP to the PBA
Connect: VBATT and DCIO/SEPI
2: Use Fault trace SW and go to:
MMI, Misc, Init Screen Testing and Activate: Camera Test
TROUBLESHOOTING
Yes
26 MHZ
at MP 20 (ST2109
VIDCC_CLK)
Yes
1.2 Volt DC
at MP 69 (ST2226
VDD_L1)
Yes
1.8 Volt DC
at MP 42 (ST2229
VSDR18)
Yes
No
No
No
SL 4 Replace
N2500
SL 5 Replace
N2102
1.8 Volt DC
at MP 70 (R2215
VIDCC_L1_EN)
1.8 Volt DC
at MP 67 (R2223
VIDCC_SDR_EN)
Yes
Yes
No
No
Replace
N2500
SL 5 Replace
N2210
SL 4 Escalate
Replace
N2500
SL 5 Replace
N2214
SL 4 Escalate
Replace
N2205
Replace
N2206
SL 5 Replace
N2010
SL 4 Escalate
No
No
No
Deactivate Camera Test and go to:
General, Selftest and Run N2500 Selftest
2.8 Volt DC
at MP 131 (TP2210
VCAMAF28)
Yes
1.8V DC at
MP 130 (TP2208
VCAMSD18) and
2.8V DC at MP 128 (TP2209
VCAMSA28)
13 MHz at
MP 37 (ST2110
CAMSYSCLK)
Yes
Fault Trace SW
1.8 Volt DC
at MP 64 (R2210) and
MP 129 (N2206_Pin 6)
1.8 Volt DC at
Yes No
Yes
MP 54 (TP2206
VCAMIO18)
Yes
1.2 Volt DC
at MP 132 (TP2207
VCAML12)
NoYes
No
Replace
N2500
SL 5 Replace
V2212
SL 4 Escalate
Replace
N2213
SL 5 Replace
N2010 or N2000
SL 4 Escalate
Yes
1.2 Volt DC
at MP 66 (ST2228
VDD_L0)
No
1.8 Volt DC
at MP 36 (C2104
PWRRSTn)
Yes
No
SL 5 Replace
N2000
SL 4 Escalate
SL 4 Replace
N2212
SL 5 Replace
N2010
SL 4 Replace
N2500
SL 5 Replace
N2010
Is the
No Yes
N2500 Selftest
Test result
0x0
Is the any of
X4311, X4312, X4313,
X4314 or X4315
damaged
Yes
No
Faulty Component
1222-9526 rev. 1
Replace
X4300
Replace
19 (124)
TROUBLESHOOTING Camera Cover Detect Problems
- TV Out Problems
SEMC Troubleshooting Manual
C905
SL 5 Replace
N2010
SL 4 Escalate
Camera Cover Detect Problems
START
Step 1:
Replace Flash Complete
and retest the Phone
If successful claim Flash Complete
If not go to step 2.
Step 2:
Use TRS Fixture
Connect Flash Complete to the PBA
Connect: VBATT and DCIO/SEPI
Continue with the
Camera Cover Detect Problems TRS guide
NOTE !
Camera Cover Detect Switch is mounted on
Flash Complete
1.8 Volt DC
at MP 41 (R4410)
when Camera Cover
Detect Switch is
Pressed-On
TV OUT Problems
START
Be very careful when you cut the Shield Can Fence
around the N2700 component to avoid component damage
Flash the Phone with EMMA SUCR SW
If successful claim SW Flash
Load ITP SW into the Phone
PBA Key Flex Flip, Slider FPC Assy and Display to the PBA
NoYes
Replace
X4400
SL 5 Replace
N2010
SL 4 Escalate
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
NOTE !
Step 1:
If not go to step 2.
Step 2:
Use TRS Fixture
Connect:
MMI
Misc
Init Screen Testing
Display Pattern
Activate:
TV Test Pattern
No
1.8 Volt DC at
MP 61 (R2228)
No
Is the
Display Backlights
Ok
Yes
Is the
Display
Ok
Yes
Is the
MP X2405_Pin 7
Short circuit to the
PBA GND
(Shield
Can Fence)
No
No
Yes
Go to
Dispaly illumination
Problems TRS guide
Go to
Display Problems
TRS guide
Replace
V2414
TROUBLESHOOTING
Replace
N2209
SL 4 Replace
N2410
SL 5 Replace
N2102
Replace
N2700
No
No
No
Yes
1.5 Volt DC at
MP 18 (ST2232
VTV15)
26 MHz at
MP 19 (ST2108
TV_CLK)
Yes
0.9V – 1V
Pk-Pk Pulses at
MP 14 (L2405)
Replace
X2405
Yes
Yes
Yes
Yes
1.8 Volt DC at
MP 17 (R2214
VTV30_EN)
Yes
3 Volt DC at
MP 15 (ST2233
VTV30)
Disconnect:
VBATT and
DCIO/SEPI
Is
R2443 = Max 0.5 Ohm
No
No
No
Replace
N2700
Replace
N2208
Replace
R2443
Claim Component
X2405
Yes
Is the
TV OUT
Problem solved
No
SL 5 Replace
N2010
SL 4 Escalate
1222-9526 rev. 1
20 (124)
TROUBLESHOOTING Charging Problems
- USB/ V BUS Cha rg in g Proble ms
SEMC Troubleshooting Manual
C905
Charging Problems
START
Step 1:
Perform Charging Test
successful go to step 2.
If NOT
Step 2:
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
3.8 Volt DC at
MP 33 (TP2201)
Yes
Is the
connection
between MP 139
(ST2211) and MP 141
(ST2212)
Ok
Yes
No
No
Replace
X2201
SL 5 Replace
R2200
SL 4 Escalate
USB/VBUS Charging Problems
START
Perform System Connector Protection Test
If successful go to step 2.
Use Phone with Normal SW (SSW)
Use TRS Fixture and connect: VBATT
Connect: USB Cable from the PC to the Phone
Step 1:
Step 2:
5V – 5.2V DC at
MP 16 (ST2213)
No
Yes
TROUBLESHOOTING
SL 5 Replace
N2000
SL 4 Escalate
Disconnect:
VBATT and DCIO/SEPI
No
Is
MP 31 (TP2202)
Short circuit to PBA
GND (Shield
Can Fence)
No
5 Volt DC at
MP 113
(V2412_Cathode)
No
Is MP 113
(V2412_Cathode)
Short circuit to PBA
GND (Shield
Can Fence)
Yes
Yes
Yes
Replace
V2200
SL 4 Replace
V2202
SL 5 Replace
N2000
Replace
V2412
Replace
N2421
Yes
5V – 5.2V DC at
MP X2405_Pin 1
Yes
Disconnect:
VBATT and USB Cable
Is
L2407 = Max 1 Ohm
No
No
Replace
X2405
Replace
L2407
L2449 = Max 1 Ohm
Is
No
Yes
Replace
X2405
SL 5 Replace
L2449
SL 4 Escalate
1222-9526 rev. 1
21 (124)
TROUBLESHOOTING SIM Problems
- Memory Stick Problems
SEMC Troubleshooting Manual
C905
Flash the Phone with
EMMA SUCR SW
Remove Test SIM
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
Logic
SIM Card control
Activate:
SIMVCC
SIMVCC On
Activate:
SIMCONRST
1.8 Volt DC at
MP 153 (X2402_Pin 2)
Yes
No
SIM Problems
Is the
Sim Com Test
Passed
No
1.8 Volt DC at
MP 155 (X2402_Pin 1)
Yes
SL 5 Replace
C2414 or C2420
SL 4 Escalate
1.8 Volt DC
at MP 152 (C2419)
Yes
No
No
Fault Trace SW
Logic
SIM Card control
Activate:
SIM Com Test
1.8 Volt DC at
MP 156 (C2420)
No
Is any of
C2414 or C2420
Short circuit
Is C2419
Short circuit
START
Load ITP SW into the Phone
Dummy Battery connected to
Power Supply Channel 1 (VBATT)
Yes
No
Yes
Step 1:
Step 2:
Insert Test SIM
Connect:
and DCIO/SEPI
Use Fault Trace SW
Replace
X2402
SL 5 Replace
N2000
SL 4 Escalate
SL 5 Replace
C2419
SL 4 Escalate
START
NOTE !
SL 4 may only Repair X2401 on the C905c Phones
If there is a problem with X2401
on C905 or C905a Phones
SL 4 Escalate to SL 5
Replace
X2401
SL 5 Replace
X2401
SL 4 Escalate
Yes
No
Is this a
C905c phone
Memory Stick Problems
Yes
TROUBLESHOOTING
Is X2401
damaged
No
Yes
SIMVCC On
SIMCONRST On
Activate:
SIMCONCLK
0.9V-1V DC at
MP 151 (X2402_Pin 3)
Yes
SIMVCC On
SIMCONRST On
SIMCONCLK On
Activate:
SIMCONDAT
Replace
X2402
No
No
Yes
Replace
X2402
Yes
1MHz and
1.8 Volt Pk-Pk at
MP 107 (ST2410)
1.8 Volt DC at
MP 105 (ST2411)
Yes
Is
MP 154 (X2402_Pin 5)
Connected to
PBA GND
No
No
Yes
SL 5 Replace
N2000
SL 4 Escalate
Yes
1MHz and
1.8V-2.2V Pk-Pk at
MP 34 (SP2410)
1.8 Volt DC at
MP 106 (C2413)
Disconnect:
VBATT and DCIO/SEPI
No
Yes
SL 5 Replace
N2000 or N2010
SL 4 Escalate
No
SL 5 Replace
N2010
SL 4 Escalate
No
SL 5 Replace
N2000
SL 4 Escalate
Flash the Phone with
EMMA SUCR SW
Yes
Is the
Memory Stick Test
Passed
No
0 Volt DC at
MP35 (R2422
MSDETECT)
Yes
Load ITP SW into the Phone
Insert Memory M2 Card
Use TRS Fixture
VBATT and DCIO/SEPI
Use Fault Trace SW
Fault trace SW
SIM Card control
Memory Stick Test
No
C905c phone
Connect:
Logic
Activate:
Is this a
No
Yes
Replace
X2401
SL 5 Replace
X2401
SL 4 Escalate
SL 5 Replace
R2416
SL 4 Escalate
No
8 Kohm
between
MP 155 (X2402_Pin 1)
(Red Probe) and
MP 150 (X2402_Pin 7)
(Black Probe)
Yes
SL 4 Replace
X2402
SL 5 Replace
N2000 or N2010
SL 5 Replace
N2000
SL 4 Escalate
No
1.8 Volt DC at
MP 162 (ST2200
VMC18)
Yes
Is this a
C905c phone
No
SL 4 Replace
Yes
SL 5 Replace
SL 5 Replace
X2401 or N2010
SL 4 Escalate
1222-9526 rev. 1
X2401
N2010
22 (124)
Primary and Secondary Mic Problems
TROUBLESHOOTING Primary & Second ary Mic Problem s
Ear Speaker Problems
- Ear Speaker Problems
SEMC Troubleshooting Manual
C905
Replace
X4400
START
Step 1:
Replace PBA Key Flex Flip or Slider FPC Assy
If successful claim PBA Key Flex Flip or Slider FPC Assy
If Secondary Mic problems replace Flash Complete and
Primary and Secondary Mic Problems TRS guide
No
If Primary Mic problem
and retest the Phone
If not go to step 3.
Step 2:
retest the phone
If successful claim Flash Complete
If not go to step 3.
Step 3:
Continue with the
Is the
problem with
both Primary and
Secondary
Mic
No
Is the
problem with
Primary Mic
Yes
Yes
SL 5 Replace
N2000
SL 4 Escalate
Replace
X4200
START
Step 1:
Replace Ear Speaker
and retest the Phone
If successful claim Ear Speaker
If not then go to step 2.
Step 2:
Replace PBA Key Flex Flip
If successful claim PBA Key Flex Flip
If not then go to step 3.
Step 3:
Replace Slider FPC Assy
If successful claim Slider FPC Assy
If not then go to step 4.
Step 4:
Load ITP SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Use Hands-Free (PHF) and
continue with the
Ear Speaker Problems TRS guide
1: Fault Trace SW
Audio and FM Radio
Audio Loop Test
Audio Input: AUX1
Loop Mode: Analog
Audio Output:
Ear Speaker
Apply Audio Loop
2: Remove the DCIO/SEPI Cable from the PBA
and Insert the Hands-Free (PHF) set to the PBA
TROUBLESHOOTING
2.6 Volt DC
at MP 125 (ST2201)
and MP 124 (ST2206)
Yes
More than
40 mV AC Pk-Pk
at MP 58 (C3159_Side A) and
MP 57 (C3159_Side B)
when blowing into
PHF mic
Yes
Replace
X4200
No
SL 5 Replace
N2000
SL 4 Escalate
No
1222-9526 rev. 1
23 (124)
TROUBLESHOOTING Loudspeaker Problems
- Handsfree (PHF) Problems
SEMC Troubleshooting Manual
C905
START
Step 1:
Replace Loudspeaker Assembly
and retest the Phone
If successful claim Loudspeaker Assembly
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Signal Generator Instrument
Use Fault Trace SW and continue with the
Loudspeaker Problems TRS guide
Loudspeaker Problems
Fault trace SW
Audio and FM Radio
Audio Output: Loudspeaker
Frequency: 103 MHz
Set FM Radio
Remove: DCIO/SEPI Cable
Connect: Customized FM Radio Cable
Black Lab Plug to TRS Fixture GND Input
and PHF Connector to the
Phone System Connector
Signal Generator
Instrument Settings:
Frequency: 103 MHz
Amplitude/Level: 50μV
FM Dev: +/-22.5 kHz
FM Rate: 1kHz
FM Radio
Replace
N2422
SL 5 Replace
N2010
SL 4 Escalate
Flash the Phone with
EMMA SUCR SW
SL 5 Replace
R2478
SL 4 Escalate
No
Yes
No
Yes
1.8 Volt DC
at MP 3 (SP2432)
No
2.6 Volt DC
at MP 110 (R2434)
Yes
0 Volt DC
at MP 111 (R2478)
Yes
Hands-Free (PHF) Problems
Fault trace SW
1: Logic
GPIO Manager
Application
GPIO_Low
GPIO_17
(Set GPIO_17 to Low)
2: Audio and FM Radio
Audio Loop Test
Audio Input: AUX1
Loop Mode: Analog
Audio Output:
AUX Earphone
Apply Audio Loop
Remove the DCIO/SEPI cabel
and Insert Hands-Free (PHF) set
Blow into the
Hands-Free (PHF) Mic
START
Step 1:
Perform
System Connector Protection Test
If successful go to step 2.
Step 2:
Load ITP SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
SL 5 Replace
N2000
SL 4 Escalate
No
TROUBLESHOOTING
SL 4 Replace
N3100
SL 5 Replace
N2000
Replace
N3100 or N2410
No
More than
40 mV AC Pk-PK
1 KHz signal at MP 1
(C3137) and MP 30
Yes
2.6 Volt DC
at MP 125 (ST2201)
and MP 124 (ST2206)
No
(C3148)
Yes
Is any of
No Yes
1.8 Volt DC
at MP 80 (R3153)
Yes
MP 147 (V3101_Pin 1)
and MP 146 (V3101_Pin 2)
Short circuit to the PBA
GND (Shield Can
Fence)
No
1: Disconnect:
Customized FM Radio Cable and VBATT
2: Remove the PBA from the TRS Fixture
SL 5 Replace
N2000
SL 4 Escalate
SL 4 Replace
V3101 or N3100
SL 5 Replace
C3107 or C3108
Replace
R2448 or V2417
Replace
L2401 or L2402
Replace
X2405 or N3101
Replace
X2405 or N3101
Yes
Is
L2403 = Max 2 Ohm
L2404 = Max 2 Ohm
L2406 = Max 1 Ohm
No
(V2417_Cathode)
No
L2401 = Max 2 Ohm
L2402 = Max 2 Ohm
Yes
VBATT and DCIO/SEPI
0 Volt DC
at MP 112
Is
SL 5 Replace
N2010
SL 4 Escalate
SL 5 Replace
N3103
SL 4 Escalate
Disconnect:
No
Yes
No
Can you
hear anything at
PHF earphone when
blowing into the
PHF Mic
Disconnect:
VBATT and DCIO/SEPI
0 Volt DC
at MP 120 (R3149)
Yes
More than
40 mV AC Pk-Pk at
MP 108 (L2403) and
MP 109 (L2404)
when blowing into
the PHF mic
No
No
No
Yes
2V – 2.2V DC at
MP 104 (R3156)
Yes
More than
40 mV AC Pk-Pk
at MP 102 (C3124), MP 99
(C3125) MP 121 (C3155),
MP 98 (C3156) when blowing
into the PHF mic
Yes
More than
40 mV AC Pk-Pk at
MP 123 (R3151)
Yes
More than
40 mV AC Pk-Pk at
MP 101 (L3125) and
MP 100 (L3126)
when blowing into
the PHF mic
Replace
X3102 or X3103
Replace
N3100
Yes
Is any of
X3102 or X3103
damaged
No
Is
L3108, L3109
L3110 and L3111
=Max 1 Ohm
SL 5 Replace
NoYes
L3108, L3109
L3110 or L3111
SL 4 Escalate
No
Replace
L2403, L2404 or
L2406
Yes
Replace
X2405
No
SL 5 Replace
N2000
SL 4 Escalate
1222-9526 rev. 1
24 (124)
TROUBLESHOOTING FM Radio Problems -
FM Radio Antenna Problems
SEMC Troubleshooting Manual
C905
Go to
Loudspeaker
Problems TRS guide
Go to
Hands-Free (PHF)
Problems TRS guide
SL 5 Replace
N2000
SL 4 Escalate
No
No
Yes
1: Remove the DCIO/SEPI Cable
Customized FM Radio Cable
TRS Fixture GND Input and
Phone System Connector
Frequency: 103 MHz
Amplitude/Level: 50 μV
FM Dev: +/-22.5 kHz
FM Rate: 1 kHz
Is the
Loudspeaker
Ok
2: Connect:
Black Lab Plug to
PHF Connector to the
Signal Generator
Instrument Settings:
FM Radio Problems
No
1: Load ITP SW into the Phone
Audio Output: Loudspeaker
FM Radio
Is not
working neither
Loudspeaker nor
PHF set
2: Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
3: Use Fault Trace SW
and go to:
Audio and FM Radio
FM Radio
Freqvency: 103 MHz
Set FM Radio
with
Yes
START
NOTE !
Be very careful when you
cut the Shield Can Fence to
avoid component damage
START
Perform System Connector Protection Test
If successful continue with the
FM Radio Antenna Problems TRS guide
Replace
L2408
No
L2408 = Max 1 Ohm
FM Radio Antenna Problems
FM Radio Problems
Is
Digital Multimeter Instrument (DMM)
for these measurements
Is the
TRS guide
done?
Yes
Use
No
TROUBLESHOOTING
Go to
FM Radio Problems
TRS guide
2.6 Volt DC
at MP 125 (ST2201)
and MP 124
(ST2206)
Yes
1.8 Volt DC
at MP 120 (R3149)
Yes
More than
40 mV AC Pk-PK
1 KHz signal at
MP 123 (R3151)
Yes
Yes
No
No
More than
40 mV AC Pk-PK
1 KHz signal at MP 122
(C3145) and MP 103
(C3146)
SL 5 Replace
N2010
SL 4 Escalate
SL 5 Replace
N3103
SL 4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
No
Signal Generator
Instrument Settings:
Change Amplitude/Level to:
800 μV
Is that
any signal on
MP 122 (C3145) and
MP 103 (C3146)
No
Is the any of
C3145 or C3146
Short circuit
No
Yes
Yes
Go to
FM Radio Antenna
Problems TRS guide
SL 5 Replace
C3145 or C3146
SL 4 Escalate
SL 5 Replace
L3300
SL 4 Escalate
No
Yes
Is
L3300 = Max 1.5 Ohm
Replace
N1300
Is the
Signal
Ok
Yes
Yes
Yes
No
Is
C3306
Short Circuit
No
Is
MP X2405_Pin 2
Connected to the PBA
(Shield Can
GND
Fence)
SL 5 Replace
V2413
SL 4 Escalate
Claim Component
N1300
Yes
No
SL 5 Replace
C3306
SL 4 Escalate
Replace
X2405
SL 4 Replace
N1300
SL 5 Replace
N2100
Replace
N1300
26 MHz BT_CLK
at MP 22 (ST2106)
Yes
YesNo
1.8 Volt DC
at MP 25 (R3302
FM_INT)
No
SL 5 Replace
N2010
SL 4 Escalate
1222-9526 rev. 1
25 (124)
TROUBLESHOOTING Bluetooth Problems
- WLAN Problem s
SEMC Troubleshooting Manual
C905
START
Step 1:
Flash the Phone with
EMMA SUCR SW
and retest the Phone
If successful
claim SUCR SW Flash
If not go to step 2.
Step 2:
Continue with the
Bluetooth Problems TRS guide
Replace
X1530
Yes
Is MP 21
(X1530_Pin 1)
Short circuit to the PBA
GND (Shield
Can Fence)
No
Is
MOD 1 Freq.
minimum 230 KHz
higher than
MOD 0 Freq.
Yes
Change the
Bluetooth channels
from ch 0 to ch 78 by using the
Fault Trace SW and test
TX Output Power
Use:
Spectrum Analyzer
Span 170 MHz
BW: Auto
Amplitude: 10 dBm
Connect SMK RF Probe to
X1500 RF Connector on PBA
NOTE! Use Peak Search when
changing the channel to get
correct TX Power value
NOTE! 1 MHz channel spacing
Max
0.5 Ohm between
MP 29 (X1500_Pin 1) and
MP 23 (X1500_Pin 2)
No
Replace
X1500
Fault trace SW Settings:
TX and RX
Bluetooth
Channel 0
(This must be done before next
NOTE! Remember the Frequency
Yes
No
Turn Off
step)
Set MaxPwr MOD 1
Is the
Blt MaxPwr MOD 1
0 dBm
(±2 dBm)
No
Replace
N1300
Replace
WLAN/BT_Antenna
or X1530
Yes
Is the
TX Output Power
for all channels
0 dBm
(±2 dBm)
No
Replace
N1300
Bluetooth Problems
1: Load ITP SW into the Phone
2: Disconnect: WLAN/BT
Antenna from the X1530
3: Use TRS Fixture
Yes
Yes
VBATT and DCIO/SEPI
4: Connect RF Cable Flexible
with SMK RF Probe to
Spectrum Analyzer instrument
5: Use Fault Trace SW
Blt MaxPwr MOD 0
and connect RF Probe to
Spectrum Analyzer instrument
NOTE! Do not use 10:1 Divider
Frequency: 2402 MHz
Amplitude: 10 dBm
NOTE! Use Peak Search (MKR)
to get correct TX Power value
MP 28 (W1300_Pin 3)
and MP 27 (W1300_Pin 4)
Connect:
Is the
0 dBm
(±2 dBm)
No
Disconnect
SMK RF Probe
Span: 10 MHz
0 dBm at
MP 48 (C1502
BT_ANT)
(±2 dBm)
No
0 dBm at
(±2 dBm)
No
2.7 Volt DC at
MP 26 (ST1302
VBT27)
Yes
Spectrum Analyzer
Instrument Settings:
Frequency: 2402 MHz
Span: 10 MHz
Amplitude: 10 dBm
Use Peak Search (MKR)
Connect SMK RF Probe to
X1500 RF Connector on PBA
Fault trace SW Settings:
TX and RX
Bluetooth
Channel 0
Set MaxPwr MOD 0
NOTE! Remember the Frequency
Yes
Yes
No
Replace
N1510
SL 5 Replace
W1300
SL 4 Escalate
SL 4 Replace
N1300
SL 5 Replace
N2000
START
This TRS guide is NOT
NOTE !
C905c Phones
Step 1:
Flash the Phone with
EMMA SUCR SW
and retest the Phone
If successful
claim SW Flashing
If not then go to Step 2.
Step 2:
Continue with the
WLAN Problems TRS guide
Replace
N1510
Replace
N2300
Replace
N2410
Claim Componenet
N2100
Yes
Is the
WLAN
Problem solved
valid for
WLAN Problems
Max
0.5 Ohm between
MP 29 (X1500_Pin 1) and
MP 23
(X1500_Pin 2)
No
Replace
X1500
Replace
WLAN/BT_Antenna
or X1530
Yes
3.3V – 3.5V DC
No
At MP 46 (ST2310
WLAN_VO33)
Yes
Is there
any signal
at MP 47 (N1500)
No
1.8 Volt DC at
No Yes
MP 85 (R2313
WLAN_PDn)
SL 5 Replace
N2100
SL 4 Escalate
Yes
Yes
Yes
1: Load ITP SW into the Phone
2: Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
3: Connect RF Cable Flexible
with SMK RF Probe to
Spectrum Analyzer instrument
4: Use Fault Trace SW
NOTE! The WLAN/BT_Antenna
must be connected to X1530
Is WLAN
TX Output Power
13 dBm
(±5 dBm)
No
1: Disconnect:
SMK RF Probe from the PBA
and from the Spectrum Analyzer
instrument
2: Connect: RF Probe to the
Spectrum Analyzer instrument
NOTE! Do not use 10:1 Divider
Use Peak Search (MKR) and
Measure
WLAN TX Output Power
on top of the N1500 component
NOTE! Do NOT
touch the N1500
component with the RF Probe
to avoid component damaging
Check the Following Voltages:
1.9V DC at MP 45 (ST2311)
1.8V DC at MP 44 (ST2312)
3.0V DC at MP 43 (ST2313)
1.8V – 2V DC at
MP 50 (V2100_Pin 1
WLAN_CLKREQ)
Spectrum Analyzer
Instrument Settings:
Frequency: 2442 MHz
Span: 10 MHz
Amplitude: 20 dBm
Use Peak Search (MKR)
Connect
SMK RF Probe to
X1500 RF Connector on PBA
Fault trace SW Settings:
TX and RX
WLAN
Wlan Settings
WLAN Turn On
Replace
N2300
No
Are the
voltages
Ok
Yes
26 MHz Signal
No
At MP 24 (ST2105
WLAN_CLK)
TROUBLESHOOTING
SL 4 Replace
N1300
SL 5 Replace
N2100
No
26 MHz Signal
At MP 22 (ST2106
BT_CLK)
Yes
SL 5 Replace
N2010
SL 4 Escalate
No
SL 5 Replace
N2010
SL 4 Escalate
SL 5 Replace
V2100
SL 4 Escalate
Yes
No
Is
MP 49 (V2100_Pin 3)
Short circuit to the PBA
GND (Shield
Can Fence)
No
SL 5 Replace
SL 4 Escalate
1222-9526 rev. 1
Yes
N1500
26 (124)
TROUBLESHOOTING GSM Problems
- WCDMA I, II and V Problem s
SEMC Troubleshooting Manual
C905
START
Step 1:
Replace Loudspeaker Assembly and retest the Phone
If successful claim Loudspeaker Assembly
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Perform SERP Calibration and retest the Phone
If successful claim SERP Calibration
If not go to step 3.
Step 3:
Disassembly the Phone and continue with the
GSM Network Problems TRS guide
GSM Network Problems
MP 62 (X1200_Pin 1) and
Max 0.5
Ohm between
MP 63 (X1200_Pin 2)
Yes
Is
MP 167 (X1210)
and MP 168 (X1211)
connected to GND
(Shield Can
Fence)
Yes
Max
1 Ohm between
MP 166 (Z1200_Pin
IN) and MP 167
(X1210)
Yes
No
No
No
Replace
X1200
Replace
X1210 or X1211
SL 5 Replace
Z1200, R1202 or
L1202
SL 4 Escalate
Go to
GSM Network
Problems TRS guide
Replace
N1200
Go to
SERP Calibration
WCDMA BAND I,II,V Network Problems
This TRS guide is NOT
Perform SERP Calibration and retest the Phone
No
No
Is the
GSM Network
Ok
Yes
Is there
problems with
WCDMA TX
Yes
START
NOTE !
valid for C905c Phones
Step 1:
Load ITP SW into the Phone
If successful claim SERP Calibration
If not go to step 2.
Step 2:
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Fault Trace SW
TX and RX WCDMA
Radio Settings:
Select Band: BAND I
Fast select channels:
Set Low Channel
Ch LOW
Modes: Max Pwr 23dBm
TROUBLESHOOTING
SL 5 Replace
N2000
SL 4 Escalate
Replace
N1211
No
No
2.8 Volt DC at
MP 163 (C1218
LDOA_OUT)
Yes
2.8V DC
at MP 65 (C1207)
(If C905c Skip This
and Replace
N1200)
Claim Component
N1200
SL 5 Replace
N2010 or N2000
SL 4 Escalate
Yes
Yes
VBATT and DCIO/SEPI
Replace
N1200
Go to
SERP Calibration
Is the
GSM Network
Problem
solved
No
Use TRS Fixture
Connect:
Replace
N1200
Replace
N1210
SL 5 Replace
L1200
SL 4 Escalate
Replace
N1210
Is the
WCDMA TX
Problem solved
Yes
No
No
2.5V – 3V DC at
MP 143 (C1215
WPA_A_EN)
No
Disconnect:
VBATT and DCIO/SEPI
Is
L1200 = Max 0.5 Ohm
Yes
SL 5 Replace
N2010 or N2000
SL 4 Escalate
Yes
Yes
3V – 3.8V DC at
MP 145 (ST1201
VCC_WPA)
No
1.8 Volt DC at
MP 144 (R1210
WPA0_EN)
No
SL 5 Replace
N2010
SL 4 Escalate
Yes
Claim Component
N1210
1222-9526 rev. 1
27 (124)
WCDMA BAND VIII Network Problems
TROUBLESHOOTING WCDMA VIII Problems
- A- G PS Proble ms
A-GPS Problems
SEMC Troubleshooting Manual
C905
Go to
GSM Network
Problems TRS guide
Replace
N1200
Go to
SERP Calibration
No
No
Is the
GSM Network
Ok
Yes
Is there
problems with
WCDMA TX
This TRS guide is NOT
This TRS guide is valid ONLY
if the WCDMA BAND VIII is supported
Perform SERP Calibration and retest the Phone
If successful claim SERP Calibration
Yes
START
NOTE !
valid for C905a and C905c Phones
NOTE !
for C905 Phones
Step 1:
Load ITP SW into the Phone
If not go to step 2.
Step 2:
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Fault Trace SW
TX and RX WCDMA
Radio Settings:
Select Band: BAND VIII
Fast select channels:
Set Low Channel
Ch LOW
Modes: Max Pwr 23dBm
Replace
N2410
SL 5 Replace
N2010
SL 4 Escalate
No
No
No
1.8 Volt DC
at MP 91 (R1404
AGPS_LDO_EN)
Yes
1.8 Volt DC
at MP 81 (R1401
AGPS_PWRON)
Yes
1.8 Volt DC
at MP 53 (R2116
AGPS_CLK_EN)
START
Step 1:
Got to Service Tests Menu and perform the GPS Test
If successful
Flash the Phone with EMMA SUCR SW
if not go to step 2.
Step 2:
Replace PBA Key Flex Flip
and retest the Phone
If successful claim PBA Key Flex Flip
if not go to step 3.
Step 3:
Replace Slider FPC Assy
and retest the Phone
If successful claim Slider FPC Assy
if not go to step 4.
Step 4:
Load ITP SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
TROUBLESHOOTING
Replace
N1200
Replace
N1210
SL 5 Replace
L1200
SL 4 Escalate
Replace
N1210
Yes
No
2.8V - 3V DC at
MP 142 (C1214
WPA_C_EN)
No
Disconnect:
VBATT and DCIO/SEPI
Is the
L1200 = Max 0.5 Ohm
Yes
Yes
Yes
3V – 3.8V DC at
MP 145 (ST1201
VCC_WPA)
No
1.8 Volt DC at
MP 140 (R1209
WPA2_EN)
No
SL 5 Replace
N2010
SL 4 Escalate
Yes
26 MHz at
MP 55 (ST2107
AGPS_CLK)
Yes
1: Disconnect:
VBATT and DCIO/SEPI
2: Connect:
VBATT and DCIO/SEPI
SL 4 Replace
No
SL 5 Replace
1.8V Pk-Pk Pulses
at MP 2 (ST1404)
shortly after phone
1: Disconnect:
VBATT and DCIO/SEPI
VBATT and DCIO/SEPI
N2410
N2102
More than
Power On
Yes
2: Connect:
No
SL 5 Replace
N2010
SL 4 Escalate
Is the
WCDMA TX
Problem solved
Yes
No
SL 5 Replace
N2010 or N2000
SL 4 Escalate
Claim Component
N1210
SL 5 Replace
N2010
SL 4 Escalate
No
More than
1.8V Pk-Pk Pulses
at MP 32 (ST1403)
shortly after phone
Power On
Yes
Replace
X4200
1222-9526 rev. 1
28 (124)
TROUBLESHOOTING Accelerometer Problems
- Vibrator Problems
SEMC Troubleshooting Manual
C905
Accelerometer Problems
START
Step 1:
Got to Service Tests Menu and perform
the Accelerometer Test
If successful
Flash the Phone with EMMA SUCR SW
if not go to step 2.
Step 2:
Load ITP SW into the Phone
Use Dummy Battery connected to
Power Supply Channel 1 (VBATT)
Connect: DCIO/SEPI
Use Fault Trace SW
Fault Trace SW
General
Asic Revisions
Read All
Clean
X4201 and X4202
Yes
Vibrator Problems
START
Step 1:
Load ITP SW into the Phone
Step 2:
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate:
Vibrator Test
Replace the
Vibrator
Yes
TROUBLESHOOTING
Is the
Vibrator working on
TRS Fixture
No
Is
Accelerometer
(N2411)
Asic Revision
0x3b
Yes
Fault Trace SW
MMI
Misc
Init Screen Testing
Activate:
Accelerometer Test
NOTE! Read X, Y, Z information in
the Info Box.
Flash the Phone with
EMMA SUCR SW
No
Activate Accelerometer Test again
NOTE! Read X, Y and Z information
NOTE! Repeat this Test Sequence
Yes
Replace
N2411
Move the Phone
and
in the Info Box.
10 Times
Can
you see
that X, Y and Z
information are
changing in the
info box
Is the
connection between
X4202 and
PBA GND (Shield
Can Fence)
Ok
No
L4202 = Max 1.5 Ohm
Is
No
Yes
Remove the PBA
from the TRS Fixture
Scrap the
PBA
SL 5 Replace
L4202
SL 4 Escalate
SL 5 Replace
C4208
SL 4 Escalate
Yes
Yes
2.7V – 3.5V
Pk-Pk Pulses at
MP VIB + on
TRS Fixture
No
Remove the PBA
from the TRS Fixture
Is C4208
Short circuit
No
SL 5 Replace
N2010
SL 4 Escalate
No
Replace
N2411
Is the
Accelerometer
Problem solved
Yes
No
Claim Component
N2411
SL 5 Replace
L4201
SL 4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
No
L4201 = Max 1.5 Ohm
Is
Yes
1222-9526 rev. 1
29 (124)
TROUBLESHOOTING Real Time Clock Problems
- Slide Sensor Problems
SEMC Troubleshooting Manual
C905
START
Does
the Phone
Gain or Lose
Time
Real Time Clock Problems
Yes
Perform:
SERP Calibration
Slide Sensor Problems
START
Step 1:
Replace Numeric Key Foli and retest the Phone
If successful claim Numeric Key Foil
If not go to step 2.
Step 2:
Replace Cover Rear Assembly and retest the Phone
If successful claim Cover Rear Assembly
If not go to step 3.
Step 3:
Continue with the
Slide Sensor Problems TRS guide
SL 4 Replace
X2410
SL 5 Replace
N2010
TROUBLESHOOTING
No
Perform:
Backup Capacitor
Test
Is the
Test Passed
No
Yes
Is there
still problems with
Gaining or Losing
Time
Flash the Phone with
EMMA SUCR SW
SL 4 Replace
C2214
SL 5 Replace
N2000
Yes
No
Claim
SERP Calibration
Replace
B2100
1222-9526 rev. 1
30 (124)
Loading...