SE C903 Schematic
ABOUT
SEMC Troubleshooting Manual
Troubleshooting Manual
C903
C903
ABOUT TROUBLESHOOTING MEASUREMENT POINTS
1228-1147 rev. 1
APPENDIXCOMPONENT OVERVIEW FUNCTIONAL OVERVIEW
1 (129)
ABOUT
General information
The purpose of this document is to provide enhanced technical 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 complement 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 service
technicians only. Sony Ericsson is not to be held responsible for any damages or losses caused
intentionally or unintentionally due to unauthorised use of the information in this document.
Note
When disassembling and reassembling the phone the instructions and processes described in the
Mechanical Working Instructions, the Generic Repair Manual and the Repair Center Handbook
must be followed.
Revision History
Rev. Date Changes / Comments
106/19/2009Initital revision.
ABOUT Contents
ABOUT 2
Contents 2
Equipment List 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 Problems 12
Numeric Keypad Problems 12
Navigation Keypad Problems 13
Volume Up and Down Button Problems 13
Camera Button Problems 14
Play & Camera Mode Button Problems 14
Navigation Keypad LED Problems 15
Numeric Keypad LED Problems 16
Camera Button LED Problems 16
Tally LED Problems 17
Trickle Charge LED Problems 17
Flash LED Problems 18
Camera Lens LED Problems 19
Camera Cover Detect Problems 19
Main Camera Problems 20
VGA/VTF Camera Problems 21
Data Communication Problems 21
Charging Problems 22
USB/VBUS Charging Problems 22
SIM Problems 23
Memory Stick Problems 23
Microphone Problems 24
Earphone Problems 24
Loudspeaker Problems 25
Handsfree Aux Earphone Problems 25
Handsfree Aux Microphone Problems 25
Handsfree Connection Problems 26
FM Radio Problems 27
FM Radio Antenna Problems 27
Bluetooth Problems 28
GSM Network Problems 28
WCDMA Problems 29
A-GPS Problems 30
Accelerometer Problems 30
Vibrator Problems 31
Real Time Clock Problems 31
Slide Sensor Problems 32
TV Out Problems 32
System Connector Protection Test 33
Current Consumption Test 33
Backup Capacitor Test 35
Charging Test 35
ASIC Revision Test 36
Measurement Points Pictures 37
MEASUREMENT POINTS
Primary Side 50
Secondary Side 51
Camera SIM FPC 52
Main Flex Assy FPC 53
Navigation Keypad FPC 54
Keypad FPC 55
Top Schematic 56
Audio Top 57
Audio Analog 58
Audio Digital 59
Audio FM Radio 60
SEMC Troubleshooting Manual
Application & System Performance Top 61
System Top 62
System Control - Clocks & Resets 63
System Memories 64
System PoP IF 65
Power Top 66
Power Regulators & Charging 67
Power Imaging 68
Power ASICs 69
Connectivity Top 70
Connectivity Top 71
Connectivity I2C & ADC 72
Connectivity Cards 73
Connectivity 74
Imaging Top 75
Imaging Display 76
Imaging Camera 77
Imaging Camera 78
Imaging LMU 79
Imaging Flash LED 80
Access Top 81
Access GSM & UMTS 82
Access Bluetooth 83
Access AGPS 84
Camera SIM FPC 85
Main Flex Assy FPC 86
Navigation Keypad FPC 87
Keypad FPC 88
COMPONENT OVERVIEW 89
Primary Side 89
Secondary Side B - C 90
Secondary Side L - Z 91
FUNCTIONAL OVERVIEW
Technical Description 92
Platform Block Diagram 103
Block Diagram Power Distribution 104
Block Diagram Clocking Concept 105
APPENDIX
Replaceable Components 106
Components - B3100, B4200, B4410 107
Components - L1200, L2200, L2261 108
Components - L2401-04 108
Components - L2406, L2408, L4102 108
Components - L4200, N1210 109
Components - N1211, N2206 109
Components - N1300, N2200, N2203 110
Components - N2210, N2288 111
Components - N2271, N2290 111
Components - N2410, N2411, N2420 112
Components - N2421, N2422, N3100 113
Components - N3101, N4201, N4240 114
Components - N4401, R2449 114
Components - S2403, V2202, V2412 115
Components - V2417, V2413, V2420-21 115
Components - 0V2430, V2470 115
Components - V4110, V4111, V4200 116
Components - V4310, V4350, V4360 116
Components - W1300, X1000, X1002-03 117
Components - X1010-11, X1030 117
Components - X1200, X1210, X2400 118
Components - X2403, X2405, X4202 119
Components - X4300, Z2400 120
Troubleshooting Software Documentation 121
Troubleshooting Fixture Setup Instructions 128
C903
ABOUT
1228-1147 rev. 1
2 (129)
ABOUT Equipment List
SEMC Troubleshooting Manual
C903
C903 Equipment List
Troubleshooting Fixture
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: 1225-3244
Note! Additional information about the TRS Fixture Kit can be found in the Trouble Shooting
Fixtures Setup Instructions document which is included in this TRS Manual.
Dummy Battery
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: NTZ 112 533
Note! The resistance between GND and BDATA should be approximately 120 KOhm.
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! Max cable length between the Power Supply Channel 1 VBATT and the dummy battery is 1
metre. The cable must have a capacity for at least 16A.
ABOUT
Info: Additional information about the equipment used for TRS can be found in the following
location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf or
matris.xls – C Model Tab.
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 the DMM is in use,
please see Picture 1.
Picture 1
1228-1147 rev. 1
3 (129)
ABOUT
Equipment List
SEMC Troubleshooting Manual
C903
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: -
RF Adaptor
Adaptor 33 N-BNC-50-1
Adaptor to Signal Generator RF Output
See Picture 2
Location: -
Picture 2
SE Communication Interface SEPI BOX
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: LTN 214 1484
See Picture 3.
Picture 3
Cables
USB Computer Cable
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
See Picture 4.
Picture 4
ABOUT
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 – C903, C903a – Trouble Shooting Application –
Project File: C903, C903a Project_R1A
Drivers
SEPI BOX Drivers
Location: http://emma.extranet.sonyericsson.com
/– Drivers – DSS / SEPI / SEMUTS
DSU-60/USB Cable
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: KRY 101 1413
RF Test Cable Flexible
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: RPM 119 885
See Picture 5.
Picture 5
1228-1147 rev. 1
4 (129)
ABOUT
Equipment List
SEMC Troubleshooting Manual
C903
SEPI Interface Cable – A1
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: KRY 101 1119/1
See Picture 6.
Picture 6
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
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
Step 3:
Cut off insulating material from back side of the charger plug according to Picture 9.
Picture 9
ABOUT
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
Note! The Cable length must be exact 1.3 metre.
Step 4:
Connect DCIO Cable and SEPI Interface Cable – A1 according to Picture 10.
Picture 10
1228-1147 rev. 1
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ABOUT
Equipment List
SEMC Troubleshooting Manual
C903
Picture 11
Note! This is setup is wrong!
Connection Instructions for the Dummy Battery
This is correct setup when the Dummy Battery is in use.
See Pictures 12 and 13.
Picture 12
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.
Step 2:
Cut the Red Lab Plug connector according to Picture 15.
Picture 15
ABOUT
Picture 13
Step 3:
Use any Hands-Free (PHF) Cable and cut it according to Picture 16.
Picture 16
Note! Cable length should be at least 40cm.
1228-1147 rev. 1
6 (129)
ABOUT
Equipment List
SEMC Troubleshooting Manual
C903
Step 4:
Use only the Wire that is connected to PIN2 and cut off 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.
Step 5:
Connect the Cable from the Picture 15 and Cable from the Picture 17 according to Picture 18.
Note! Use soldering iron for this action and then use insulating material to protect the contact
point.
Picture 18
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
Sony Memory Stick M2
Any functional Memory Stick Micro M2 Card
See Picture 21.
Picture 21
ABOUT
Test Cards
Local SIM
Any functional Local SIM Card
See Picture 19.
Picture 19
SMK RF Probe
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: SXA 109 6356
See Picture 22.
Picture 22
1228-1147 rev. 1
7 (129)
TROUBLESHOOTING Power On/Off Prob lems
- USB and Sof tware Flash Problem s
SEMC Troubleshooting Manual
C903
START
Use the
Dummy Battery Connected to
Power Supply Channel 1
(VBATT)
No
Is the
phone consuming
any current when
powering on the
phone
Yes
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
No
Yes
No
Yes
On-Off Key Problems
Go to
Dead phone
Problems part 1
TRS guide
Go to
Current
Consumption Test
After this go to
Charging Test
Go to
TRS guide
START
Step 1:
Perform
System Connector Protection Test
If successful go to step 2.
Step 2:
Download ITP SW into the Phone
Go to
USB/VBUS
Charging Problems
USB and Software Flash Problems
Is 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
No
YesNo
Is the
ITP SW Flash
Successful
Is MP 14
(X2405_Pin 10)
Short circuit to
GND
No
Yes
Yes
SL 5 Replace
N2020
SL 4 Escalate
Replace
V2421
TROUBLESHOOTING
Is the current
consumption between
10mA to 70mA
Yes
Flash
the phone with
correct CDA
software
Flash
The phone with
the ETS software.
Is the ETS SW Flash
Successful
No
Go to
Data Communication
Problems
TRS guide
No
No
Flash
the phone with
correct CDA
software
CDA Software
Flash
Successful
Yes
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
Yes
4. Activate the phone
Is the Problem
solved
No
Go to
Dead Phone
Problems part 1
TRS guide
Press ”C”
Connect USB from PC.
Update SEMC BOOT if
necessary. Run EMMA
SUCR SW. Is Phone
Flash Ok
No
Is the
Flash process
started
Yes
Yes
SL 4 Replace
N2420
SL 5 Replace
R2442
Go to
System Connector
No
NoYes
Protection Test
After this go to
Data Communication
Problems TRS guide
Is the Problem
solved
Yes
Claim for a
SW Upgrade
SL 4 Replace
N2420
SL 5 Replace
N2010
No
Yes
5 Volt DC at
MP 75 (C2433)
Yes
2.7V – 3.3V DC
at MP 68 (C2437) and
1.8V DC at MP 76
(C2435)
Yes
Remove the PBA from the
TRS Fixture
Max
2 Ohm between
MP 14 (X2405_Pin 10)
and MP 65 (Z2400_Pin 2)
Yes
Max
2 Ohm between
MP 15 (X2405_Pin 11)
and MP 66
(Z2400_Pin 3)
No
No
No
No
Is MP 15
(X2405_Pin 11)
Short circuit to
GND
SL 4 Replace
N2420
SL 5 Replace
N2010
Max
0.5 Ohm between
MP 14 (X2405_Pin 10)
and MP Z2400_Pin 1)
Max
0.5 Ohm between
MP 15 (X2405_Pin 11)
and MP 64
(Z2400_Pin 4)
Yes
Yes
Yes
No
No
Replace
V2420
Replace
X2405
Replace
Z2400
Replace
X2405
Replace
Z2400
1228-1147 rev. 1
8 (129)
TROUBLESHOOTING Dead Phone Proble m s
SEMC Troubleshooting Manual
C903
START
Try to recover the Phone by using
Connect USB Cable to the Phone
and update SEMCBOOT after this
If successful claim SW Flash
If not continue with Step 2.
current consumption
Step 1:
EMMA SW
Press key 2 and 5
Run EMMA SUCR SW
and retest the Phone
Step 2:
Use TRS Fixture
Connect: VBATT Only
Replace
N2420 or N1200
SL 5 Remove
N2000
SL 4 Escalate
Is the
still more than
1mA
Yes
SL 4 Replace
N2420
SL 5 Replace
N2000
Replace
N1211
Yes
No
current consumption
more than 1mA
Try to trace
Faulty Component
by using Freezing Spray
N2420 or N1200
getting hot
No
No
SL 5 Replace
SL 4 Escalate
Try to trace Faulty
Component by using
Freezing Spray
At MP 86 (C2209
VDDE18) and 2.8V DC at
MP 119 (C1251
LDOA_OUT)
at MP 110 (C1253)
Dead Phone Problems part 1
Is the
Yes
Is
N2000
1.8V DC
Yes
2.8V DC
Yes
No
NoNo
MP 35 (X2201_Pin 4) and
DCIO/SEPI to the Phone
Is the
connection between
MP 27 (X1040 / PBA
GND) Ok
Yes
Connect:
32 kHz
at MP 79 (C2100)
Yes
32 kHz RTCCLK at
MP 106 (R1404)
Yes
26 MHz
SYSCLK1 at
MP 89 (SP2108)
Go to
Dead Phone
Problems part 2
SL 4 Escalate
No
No
No
Yes
No
SL 5 Replace
X2201 or R2200
SL 4 Escalate
SL 5 Replace
B2100 or N2000
SL 5 Replace
SL 4 Escalate
Check the following
Voltages:
2.6V MP 84 (C2402 VAUDIO26)
2.5V MP 90 (C2208 VANA25)
2.7V MP 120 (C2210 VBT27)
2.7V MP 117 (C2211 VDIG)
2.6V MP 109 (C2212 VBEAR26)
1.2V MP 61 (C2220 VCORE12)
1.8V MP 56 (L2202 VCORE18)
all Voltages
N2000
Are
Ok
Is the
VAUDIO26
Voltage
Ok
Yes
Is the
VANA25
Voltage
Ok
Yes
Is the
VBT27
Voltage
Ok
Yes
Is the
VDIG
Voltage
Ok
Dead Phone Problems part 2
START
Before following this guide the
Dead Phone Problems part 1 TRS guide
No
No Yes
No
No
NOTE !
must be finished.
Is N2422
getting hot
Is any of
N2200 or N2010
getting hot
Is N1300
getting hot
Is any of
N2411 or N1300
getting hot
Yes
No
No
Yes
No
Yes
TROUBLESHOOTING
Replace
N2422
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
N2411 or N1300
Replace
N1200 or N1300
SL 5 Replace
N2010
SL 4 Escalate
SL 5 Replace
N2020
SL 4 Escalate
Go to Data
Communication
Problems TRS guide
Yes
Yes
1.8V DC
at MP 108 (R2115)
No
Is the
ITP SW Flash
Successful
No
Step 1:
Disconnect:
VBATT and DCIO/SEPI
Step 2:
Main Flex Assy and Navigation PBA
Press the ”C” key and Connect
USB Cable from the PC to the PBA
Flash the Phone with the ETS SW
Connect:
Assy to the PBA
Connect: VBATT Only
Step 3:
Use EMMA SW
Yes
Yes
Is the
VBEAR26
Voltage
Ok
Yes
No
No
Is X4202
damaged
No
SL 5 Replace
N2000
SL 4 Escalate
Go to
Dead Phone
Problems part 3
Yes
Replace
X4202
1228-1147 rev. 1
9 (129)
TROUBLESHOOTING
Dead Phone Proble m s - D is p l ay Proble m s
SEMC Troubleshooting Manual
C903
Is the
VCORE12
Voltage
Ok
Yes
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 74
(V2201_Cathode)
Yes
1.1 – 1.2V DC
at MP 61 (C2220)
NOTE !
must be finished.
No
Yes
No
3.8 Volt DC at
MP 67 (L2201)
SL 5 Replace
N2000 or N2010
SL 4 Escalate
Replace
L2200
Yes
No
SL5 Replace
L2201
SL4 Escalate
SL 5 Replace
V2201 or N2000
SL 4 Escalate
Main Flex Assy, Navigation PBA Assy and Display to the PBA
Go to
Display illumination
Problems TRS guide
Display Problems
START
Load ETS SW into the Phone
Use TRS Fixture Display Holder and Connect:
If Display is working on the TRS Fixture then Replace
Display, Main Flex Assy or Navigation PBA Assy
If not continue with the Display Problems TRS guide
No
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Display Pattern
Activate:
TV Test Pattern
Is the
Display Backlights
Ok
TROUBLESHOOTING
Is the
VCORE18
Voltage
Ok
Yes
Step 1:
Disconnect:
VBATT and DCIO/SEPI
Step 2:
Connect:
Main Flex Assy and Navigation PBA
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 ETS SW
No
Is MP 56 (L2202)
Short circuit to GND
No
Disconnect:
VBATT and DCIO/SEPI
Is
L2202 = Max 0.5 Ohm
Is the
ETS SW Flash
Successful
Yes
No
Yes
No
Yes
SL 4 Replace
N2200
SL 5 Replace
C2231 or N2010
SL 5 Replace
L2202
SL 4 Escalate
SL 4 Replace
N2200
SL 5 Replace
N2010
SL 5 Replace
N2020
SL 4 Escalate
Go to Data
Communication
Problems TRS guide
Go to
TV OUT Problems
TRS guide
Go to
Opto Sense
Problems TRS guide
SL 5 Replace
N2010
SL 4 Escalate
No
No
No
Yes
Is TV OUT
Ok
Yes
Is the picture
too dark or
too light
Yes
Replace
X4202
Is the Display
Problem solved
Yes
Claim Component
X4202
1228-1147 rev. 1
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TROUBLESHOOTING Display Illumin at io n Prob le m s
- Opto Sensor Prob le m s
SEMC Troubleshooting Manual
C903
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 ETS SW into the Phone
Use TRS Fixture
Use TRS Fixture Display Holder and Connect:
Main Flex Assy, Navigation PBA 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, Main Flex Assy or Navigation PBA Assy
If not continue with the
Display illumination Problems TRS guide
1: Use Fault trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Deactivate:
Display Backlight
2: Disconnect the Main Flex Assy and remove
the Display Holder from the TRS Fixture
Yes
3.7V - 3.8V DC at
MP 57 (N4201_Pin 3)
No
3.7V - 3.8V DC
at MP 25 (TP4200)
Yes
No
SL 4 Replace
N4201
SL 5 Replace
L4201
Replace
L4200
Go to
Display illumination
Problems TRS guide
Go to
Dispaly Problems
TRS guide
Opto Sense Problems
START
Replace Main Flex Assy and retest the Phone
If successful claim Main Flex Assy
Replace Navigation PBA Assy and retest the Phone
If successful claim Navigation PBA Assy
Replace Display and retest the Phone
If successful claim Display
Opto Sense Problems TRS guide
No
No
Step 1:
if not go to step 2.
Step 2:
If not go to step 3.
Step 3:
if not continue with the
Is the
Display
illumination (LEDs)
Ok
Yes
Can you see
any picture/image in
the Display
Yes
TROUBLESHOOTING
SL 4 Replace
V4200
SL 5 Replace
N2000
Replace
X4202
No
0 Volt DC at
MP 26 (TP4201) and
MP 20 (TP4202)
Yes
Replace
N4201
Yes
Yes
Fault trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Display Backlight
17V - 20V
Pk-Pk Pulses
at MP 25 (TP4200)
Shortly after the Display
Backlight has been
Activated
No
Fault trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
1: Deactivate:
Display Backlight
2: Activate:
Display Backlight
More
than 4 Volt Pk-Pk
Pulses at MP 58 (N4201_Pin1)
Shortly after the Display
Backlight has been
activated
No
SL 5 Replace
N2000
SL 4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
Replace
N2210
SL 5 Replace
N2000
SL 4 Escalate
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
1.8V – 2.3V
Pk-Pk Pulses at
No
No
No Yes
MP 107 (R2250 OPTO_EN)
Shortly after phone
Power On
Yes
3V – 3.5V
Pk-Pk Pulses at
MP 37 (TP2203 VOPTO30)
Shortly after phone
Power On
Yes
Replace
X4202
Is the
Opto Sensor Problem
solved
Claim Component
X4202
1228-1147 rev. 1
11 (129)
TROUBLESHOOTING On-Off Key
- Numeri c Keypad Proble m s
SEMC Troubleshooting Manual
C903
Replace
V2470
SL 5 Replace
V2480, R2459, R2471
or N2010
SL 4 Escalate
On-Off Key Problems
START
Replace Navigation PBA Assy and retest the Phone
If successful claim Navigation PBA Assy
Replace Main Flex Assy and retest the Phone
If successful claim Main Flex Assy
Connect: VBATT and DCIO/SEPI
Yes
No
Step 1:
if not go to step 2.
Step 2:
if not go to step 3.
Step 3:
Use TRS Fixture
1.8 Volt DC
at MP 44
(V2470_Anode)
Yes
Is the
Problem with
Power Off
No
Numeric Keypad Problems
START
Load ETS SW into the Phone
Connect Key Flex Assy and Keyboard to the PBA
Perform Keypad Scan Test by pressing all
Keypads on the Key Flex Assy and the Camera Button (S2403)
If successful Replace Key Flex Assy
Numeric Keypad Problems TRS guide
SL 5 Replace
V2480 or N2010
SL 4 Escalate
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
If not then continue with the
MMI
Misc
Init Screen Testing
Activate
Keypad Scan Test
Yes
MP 50 (V2480_Pin C2)
Is
Short circuit to
GND
No
1: Disconnect the VBATT and DCIO/SEPI
Disconnect the Key Flex Assy from the PBA
2: Connect the VBATT and DCIO/SEPI again
Is the
Yes
Camera Button
S2403
Ok
No
TROUBLESHOOTING
Go to
Camera Button
Problems TRS guide
SL 4 Replace
X4202
SL 5 Replace
N2000
SL 4 Replace
V2470 or X4202
SL 5 Replace
N2000
Yes
3.7 Volt DC
at MP 46
(V2470_Cathode)
No
SL 5 Replace
R2454, R2470 or
N2010
SL 4 Escalate
SL 5 Replace
V2482 or N2010
SL 4 Escalate
SL 5 Replace
R2456, R2475 or
N2010
SL 4 Escalate
SL 5 Replace
V2476 or N2010
SL 4 Escalate
SL 4 Replace
X2400
SL 5 Replace
R2485, R2486, R2487
R2488 or R2489
No
Yes
No
Yes
1.8 Volt DC
at MP 50
(V2480_Pin C2)
Is MP 51
(V2482_Pin C1)
or MP 53 (V2482_Pin
C2) Short circuit to
GND
No
1.8 Volt DC
at MP 51
(V2482_Pin C1)
Is
MP 47 (V2476_Pin C1)
Short circuit to
GND
No
Yes
Yes
Yes
No
MP 45 (V2481_Pin C2)
Is
Short circuit to
GND
No
1.8 Volt DC
at MP 45
(V2481_Pin C2)
1.8 Volt DC
at MP 53
(V2482_Pin C2)
Yes
Is
MP 91 (V2472_Pin C2)
Short circuit to
GND
Yes
No
No
Yes
SL 5 Replace
V2481 or N2010
SL 4 Escalate
SL 5 Replace
R2493, R2472 or
N2010
SL 4 Escalate
SL 5 Replace
R2491, R2474 or
N2010
SL 4 Escalate
SL 5 Replace
V2472 or N2010
SL 4 Escalate
1228-1147 rev. 1
12 (129)
TROUBLESHOOTING
Nav i g at i on Keypad Proble m s - Volume Up an d D own Bu t t on Prob l e m s
SEMC Troubleshooting Manual
C903
Navigation Keypad Problems
START
Step 1:
Go to Service Tests Menu and perform Keyboard Test
If successful flash the Phone with EMMA SUCR SW
if not go to step 2.
Step 2:
Load ETS SW into the Phone
Use TRS Fixture
Use TRS Fixture Display Holder and Connect:
Main Flex Assy and Navigation PBA 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 Navigation Keypads
If successful Replace Navigation PBA Assy or Main Flex Assy
If not then continue with the
Navigation Keypad Problems TRS guide
Volume + and - Button Problems
START
Step 1:
Go to Service Tests Menu and perform Keyboard Test
If successful flash the Phone with EMMA SUCR SW
if not go to step 2.
Step 2:
Load ETS SW into the Phone
Use TRS Fixture
Connect: SIM Flex 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 Volume + and - Buttons
If successful replace SIM Flex Assy
If not then continue with the
Volume + and – Button Problems TRS guide
TROUBLESHOOTING
SL 4 Replace
X4202
SL 5 Replace
R2489 or N2010
1: Disconnect the VBATT and DCIO/SEPI
2: Disconnect and Remove the
Main Flex Assy and Navigation PBA Assy
No
from the TRS Fixture
Are all
Numeric Keys
Ok
Yes
Is
MP 48 (V2476_Pin C2)
Short circuit to
GND
No
Yes
Go to
Numeric Keypad
Problems TRS guide
SL 5 Replace
V2476 or N2010
SL 4 Escalate
Replace
X4300
Yes
Are all
Numeric Keys
Ok
No
Numeric Keypad
Problems TRS guide
Go to
1228-1147 rev. 1
13 (129)
TROUBLESHOOTING Camera Butto n Prob le m s
- Play & Camera Mode Butt o n Probl e m s
SEMC Troubleshooting Manual
C903
Camera Button Problems
SL 5 Replace
V2472, V2471 or
N2010
SL 4 Escalate
START
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Is MP 93
Yes
(S2403_Pin B)
and MP 94 (S2403_Pin
C1) Short circuit
to
GND
No
Yes
1.8 Volt DC
at MP 92
(S2403_Pin A1)
Replace
Key Flex Assy
Play and Camera Mode Button Problems
START
Go to Service Tests Menu and perform Keyboard Test
If successful flash the Phone with EMMA SUCR SW
Play and Camera Mode Button Problems TRS guide
Yes
if not continue with the
Are all
Numeric Keys
Ok
No
Problems TRS guide
TROUBLESHOOTING
Go to
Numeric Keypad
SL 5 Replace
N2010
SL 4 Escalate
Replace
S2403
Yes
(S2403_Pin A1)
No
0 Volt DC
at MP 92
Press the
S2403 Camera Button
SL 5 Replace
V2481 or N2010
SL 4 Escalate
Replace
S2403
SL 5 Replace
R2492, R2473 or
N2010
SL 4 Escalate
Yes
Yes
(S2403_Pin A1)
Short circuit to
1.8 Volt DC
at MP 100
(V2481_Pin C1)
No
No
Is MP 92
GND
No
1228-1147 rev. 1
14 (129)
TROUBLESHOOTING
N avigatio n Keypad LE D Prob le m s
SEMC Troubleshooting Manual
C903
Navigation Keypad LED Problems part 1
START
Load ETS SW into the Phone
Use TRS Fixture
Remove the Dome Foil Navi PBA and Light Block Navi
PBA from the Navigation PBA
Use the TRS Fixture Display Holder and Connect
Navigation PBA and Main Flex 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:
Navigation Keypad
Are all
Navigation PBA
LEDs On
(except V8450)
No
Yes
Navigation Keypad
LED Problems part 2
Go to
Navigation Keypad LED Problems part 2
TROUBLESHOOTING
START
Note! Before following this guide
the Navigation Keypad Problems part 1
TRS guide must be finished.
1: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Deactivate:
Navigation Keypad
2: Activate:
CleraKey BLUE LED
SL 4 Replace
X4202
SL 5 Replace
N2000
SL 4 Replace
N4240
SL 5 Replace
N2000
Are
No
No
all WHITE LEDs
Ok
Yes
Check the following BLUE LEDs:
V8431, V8434,
V8440, V8441, V8442 and V8443
3.8 Volt DC
at MP 55
(N4240_Pin 3)
Yes
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate:
Navigation Keypad
Check the following WHITE LEDs:
V8420, V8421, V8422, V8423
V8424, V8425, V8426 and V8427
Are the
BLUE LEDs
Ok
No
1: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Deactivate:
Navigation Keypad
2: Disconnect VBATT and DCIO/SEPI and
Remove the TRS Fixture Display Holder
3: Connect VBATT and DCIO/SEPI
0 Volt DC
at MP 55
(N4240_Pin 3)
Yes
No
Yes
Replace
Main Flex Assy or
Navigation PBA
Assy
Replace
N4240 or N2410
Replace
X4202
Replace
N4240 or X4202
Is V8450
”C” Key BLUE LED
Yes
Ok
No
1: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Deactivate:
CleraKey BLUE LED
2: Disconnect VBATT and DCIO/SEPI and
Remove the TRS Fixture Display Holder
3: Connect VBATT and DCIO/SEPI
4: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate:
CleraKey BLUE LED
1.8 Volt DC
Yes
at MP54
No
(N4240_Pin 1)
Replace
Main Flex Assy or
Navigation PBA
Assy
Replace
N2410
1228-1147 rev. 1
15 (129)
TROUBLESHOOTING Numeri c Keypad LED Probl e m s
- Camera Butto n LED Problems
SEMC Troubleshooting Manual
C903
Numeric Keypad LED Problems
START
Load ETS SW into the Phone
Use TRS Fixture
Connect: Key Flex 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:
Numeric Keypad
If Numeric Keypad LED is working on the TRS Fixture
then Replace Key Flex Assy
If not then continue with the
Numeric Keypad LED Problems TRS guide
SL 4 Replace
X2400
SL 5 Replace
V4112 or N2000
Camera Button LED Problems
TROUBLESHOOTING
START
SL 4 Replace
V4350 or V4360
SL 5 Replace
N2000
1228-1147 rev. 1
16 (129)
TROUBLESHOOTING Tally LED Problems
- Trickle Cha rg e LED Problems
SEMC Troubleshooting Manual
C903
Replace
N2410
Tally LED Problems
START
Load ETS SW into the Phone
Connect: VBATT and DCIO/SEPI
Continue with the Tally LED Problems TRS guide
No
Use TRS Fixture
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Tally LED
1.8 Volt DC
at MP 30 (R4310)
Yes
SL 4 Replace
V4310
SL 5 Replace
V4311
SL 5 Replace
N2000
SL 4 Escalate
Trickle Charge LED Problems
START
Load ETS SW into the Phone
Connect: VBATT and DCIO/SEPI
Continue with the Trickle Charge LED Problems
No
Use TRS Fixture
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Charge LED
TRS guide
1.8 Volt DC
at MP 95
(V4350_Anode)
Yes
TROUBLESHOOTING
Replace
V4350 or V4360
1228-1147 rev. 1
17 (129)
TROUBLESHOOTING Flash LED Problems
SEMC Troubleshooting Manual
C903
Flash LED Problems in Camera Mode
START
Step 1:
Go to Service Test and perform the Main Camera Test
If successful go to step 2, if not go to
Main Camera Problems TRS guide.
Step 2:
Replace Camera 5MPixel CMOS Slim
If successful claim Camera 5MPixel CMOS Slim
if not go to step 3.
Step 3:
Replace SIM Flex Assy
If successful claim SIM Flex Assy
if not go to step 4.
Step 4:
Load ETS SW into the Phone
Use TRS Fixture
Connect the Main Camera to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Flash LED
Flash LED Problems in Torch Mode
START
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Flash LED
3.8 Volt DC at
MP 97 (R4115)
No
Yes
TROUBLESHOOTING
Replace
V4110, V4111
or N4401
Is the
Flash LED
Ok
Yes
1: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Deactivate:
Flash LED
2: Activate
Main Camera
1.8 Volt DC at
MP 98 (R2298)
Yes
No
No
Go to Flash LED
Problems in
Torch Mode
Replace
N2410
SL 4 Replace
N4401
SL 5 Replace
N2000 or N2010
Yes
3.8 Volt DC at
MP 96 (L4102)
No
Replace
L4102
SL 4 Replace
N4401 or X4300
SL 5 Replace
N2000 or N2010
1.8 Volt DC at
MP 99 (C2298)
NoYes
Replace
N2271
1228-1147 rev. 1
18 (129)
TROUBLESHOOTING Camera Lens LE D Prob le m s
- Camera Cover Detect Problem s
SEMC Troubleshooting Manual
C903
Replace
N2410
Camera Lens LED Problems
START
Replace SIM Flex Assy and retest the Phone
If successful claim SIM Flex Assy
Load ETS SW into the Phone
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
Continue with the Camera Lens LED Problems TRS guide
No
Step 1:
if not go to step 2.
Step 2:
Use TRS Fixture
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Camera Lens LED
1.8 Volt DC
at MP 19 (R4320)
Yes
SL 4 Replace
X4300
SL 5 Replace
V4321
Replace
SIM Flex Assy
Camera Cover Detect Problems
START
Replace Battery Cover Assy and retest the Phone
If successful claim Battery Cover Assy
Connect SIM Flex Assy to the PBA
Connect: VBATT and DCIO/SEPI
Camera Cover Detect Problems TRS guide
NOTE! The MP is located on the SIM Flex Assy
Step 1:
If not go to step 2.
Step 2:
Use TRS Fixture
Continue with the
1.8 Volt DC
at MP 121
(B8400_Pin 1)
NoYes
TROUBLESHOOTING
SL 4 Replace
X4300
SL 5 Replace
N2010
1228-1147 rev. 1
19 (129)
TROUBLESHOOTING Main Camera Problems
SEMC Troubleshooting Manual
C903
Main Camera Problems part 1
Use Fault Trace SW and go to:
Ignore these messages when they appear
(In the right corner of the Fault Trace SW)
Error_CommandFailed, ERR:”
”
Use Fault Trace SW and
Repeat the Main Camera Test
MMI
Misc
Init Screen Testing
Activate:
Main Camera Test
NOTE !
in the Trace window
1.8 Volt DC
at MP 87 (N2206_Pin 4)
Shortly after the Main
Camera Test has been
activated
Yes
No
Flash the Phone with EMMA SUCR SW and go to Service Tests Menu
SL 5 Replace
N2010
SL 4 Escalate
No
1.8 Volt DC
at MP 88 (R2290)
Shortly after the Main
Camera Test has been
activated
START
Step 1:
Perform: Main and VGA/VTF Camera Tests
If the Tests are successful then claim SW Flash
Replace Camera 5 Mpixel CMOS Slim and retest the Phone
If successful claim Camera 5 Mpixel CMOS Slim
Replace SIM Flex Assy and retest the Phone
if not go to step 2.
Step 2:
If not go to step 3.
Step 3:
If successful claim SIM Flex Assy
If not go to step 4.
Step 4:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Main Camera Problems part 2
Use Fault Trace SW and
Repeat the Main Camera Test
START
Before following this guide the
Main Camera Problems part 1
TRS Guide must be finished.
Repeat the Main Camera Test
Yes
NOTE !
Use Fault Trace SW and
1.8 Volt DC
at MP 28 (TP2215)
Shortly after the Main
Camera Test has been
activated
No
TROUBLESHOOTING
Replace
N2206
Replace
N2290
Go to
Main Camera
Problems Part 2
Yes
Use Fault Trace SW and
Repeat the Main Camera Test
2.8 Volt DC
at MP 29 (TP2216)
No
Shortly after the Main
Camera Test has been
activated
Yes
Use Fault Trace SW and
Repeat the Main Camera Test
1.8 Volt DC
at MP 32 (TP2214)
No
Shortly after the Main
Camera Test has been
activated
Yes
Replace
N2290
No
2.8 Volt DC
at MP 33 (TP2213)
Shortly after the Main
Camera Test has been
activated
Yes
Use Fault Trace SW and
Repeat the Main Camera Test
SL 5 Replace
N2010
SL 4 Escalate
Replace
X1040 or X1041
No
No
1.2 Volt DC
at MP 31 (TP2217)
Shortly after the Main
Camera Test has been
activated
Yes
26 MHZ
CAMSYSCLK
at MP 52 (C2103 Shortly )
after the Main Camera
Test has been
activated
Yes
Are
MP 27 (X1040)
and X1041
connected to
GND
Yes
Replace
X4300
No
Disconnect
VBATT and DCIO/SEPI
Are
L2260 and L2261
= Max 1 Ohm
Is the
Main Camera Problem
Solved
No
No
Yes
Yes
Replace
N2203
Replace
L2260 or L2261
Claim Component
X4300
SL 5 Replace
S4300 or N2010
SL 4 Escalate
1228-1147 rev. 1
20 (129)
TROUBLESHOOTING VGA/VTF Cam e ra Probl e m s
- Data Communi cation Problems
SEMC Troubleshooting Manual
C903
This TRS guide is valid ONLY for C903 phones with VGA/VTF Camera support.
Flash the Phone with EMMA SUCR SW and go to Service Tests Menu
If not then continue with the VGA/VTF Camera Problems TRS guide
SL 4 Replace
X4202
SL 5 Replace
N4300, N4301, N4302
N4303, N4304 or
N4305
VGA/VTF Camera Problems
START
NOTE !
Step 1:
Perform the: Main and VGA/VTF Camera Tests
If the Tests are successful then claim SW Flash
Replace the Main Flex Assy and retest the Phone
If successfull claim Main Flex Assy
Replace the Navigation PBA Assy and retest the Phone
If successfull claim Navigation PBA Assy
Yes
if not go to step 2.
Step 2:
If not go to step 3.
Step 3:
Is the
Main Camera
Ok
No
Go to
Main Camera
Problems TRS guide
START
Step 1:
Perform
System Connector Protection Test
If successful go to step 2.
Step 2:
Dowload ETS SW into the Phone
Go to
USB/VBUS
Charging Problems
SL 5 Replace
R2442
SL 4 Escalate
Data communication Problems
Is the
Flash process
Start-up when using
EMMA SW
No
1: Connect: VBATT and DCIO/SEPI
3: Connect: USB Cable from the PC
No
Use TRS Fixture
2: Remove: DCIO/SEPI
Is
the USB
Charging
Ok
5 Volt DC at
MP 75 (C2433)
Yes
TROUBLESHOOTING
No
YesNo
No
Is the
ETS SW Flash
Successful
Is
MP 14 (X2405_Pin 10)
Short circuit to GND
No
Is
MP 15 (X2405_Pin 11)
Short circuit to the
GND
Yes
Yes
Yes
SL 5 Replace
N2020
SL 4 Escalate
Replace
V2421
Replace
V2420
Is the
VGA/VTF Camera
Problem Solved
No
Yes
Claim Component
Faulty Component
SL 5 Replace
N2010
SL 4 Escalate
SL 4 Replace
N2420
SL 5 Replace
N2010
Yes
Yes
2.7V – 3.3V DC
at MP 68 (C2437) and
1.8V DC at
MP 76 (C2435)
Yes
Remove the PBA from the
TRS Fixture
Max
2 Ohm between
MP 14 (X2405_Pin 10)
and MP 65
(Z2400_Pin 2)
Yes
Max
2 Ohm between
MP 15 (X2405_Pin 11)
and MP 66
(Z2400_Pin 3)
No
No
No
SL 4 Replace
N2420
SL 5 Replace
N2010
Max
0.5 Ohm between
MP 14 (X2405_Pin 10)
and MP 63
(Z2400_Pin 1)
Max
0.5 Ohm between
MP 15 (X2405_Pin 11=
and MP 64
(Z2400_Pin 4)
Yes
No
No
SL 5 Replace
X2405
SL 4 Escalate
Replace
Z2400
SL 5 Replace
X2405
SL 4 Escalate
Yes
Replace
Z2400
1228-1147 rev. 1
21 (129)
TROUBLESHOOTING Charging Problems
- USB/VBUS Charging Problems
SEMC Troubleshooting Manual
C903
Charging Problems
START
Step 1:
Perform Charging Test
If NOT
successful go to step 2.
Step 2:
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Is X2201
damaged
Yes
Is MP 36 (TP2202)
Short circuit to GND
No
Yes
SL5 Replace
X2201
SL4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
USB/VBUS Charging Problems
START
Perform the System Connector Protection Test
If successful go to step 2.
Use Phone with the Signalling 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 70 (N2421_Pin 4)
No
Yes
TROUBLESHOOTING
SL 5 Replace
N2000
SL 4 Escalate
Replace
R2490 or R2449
No
No
5 Volt DC at
MP 18 (C2440)
No
Is MP 18 (C2440)
Short circuit to GND
No
Disconnect:
VBATT and DCIO/SEPI
Is the
R2490 and R2449
=Max 1 Ohm
Yes
Yes
Yes
SL 4 Replace
V2202
SL 5 Replace
N2000
SL 4 Replace
C2440, V2412 or
V2202
SL 5 Replace
C2441 or N2000
SL 4
Escalate
SL 5
Replace X2405
Replace
N2421
Yes
5V – 5.2V DC at
MP 8 (X2405_Pin 1)
Yes
Disconnect:
VBATT and USB Cable
Is L2468 = Max 1 Ohm
No
No
SL5 Replace
X2405
SL4 Escalate
Replace
L2468
1228-1147 rev. 1
22 (129)
TROUBLESHOOTING SIM Problems
- Memory Stick Problem s
SEMC Troubleshooting Manual
C903
Activate:
SIMVCC
SIMVCC On
Activate:
SIMRSTn
Please follow instructions from 1 to 5
1: Disconnect: VBATT and DCIO/SEPI
2: Disconnect: SIM Flex Assy from the PBA
3: Restart the Fault Trace SW
4: Connect: VBATT and DCIO/SEPI
5: Use Fault Trace Sw and go to:
Logic
SIM Card Control
1.8 Volt DC at
MP C2420
Yes
SIM Problems
Flash the Phone with the EMMA SUCR SW and retest the Phone
No Yes
START
Step 1:
if successful claim SW Flash, if not go to step 2.
Load ETS SW into the Phone
Connect: SIM Flex Assy to the PBA and Insert the Test SIM
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
If the SIM Com Test is passed then Replace SIM Flex Assy
If not then continue with the SIM Problems TRS guide
Is the
C2414 Short
circuit
Step 2:
Use TRS Fixture
Logic
SIM Card Control
Activate:
SIM Com Test
No
SL 5 Replace
C2414
SL 4 Escalate
SL 5 Replace
N2000
SL 4 Escalate
Memory Stick Problems
START
Is X2403
damaged
Yes
TROUBLESHOOTING
Replace
X2403
1.8 Volt DC at
MP C2419
Yes
SIMVCC On
SIMRSTn On
Activate:
SIMCLK
1MHz and
1.8V – 2V Pk-Pk at
MP SP2407
Yes
SIMVCC On
SIMRSTn On
SIMCLK On
Activate:
SIMDAT
No
No
Is the
C2419
Short circuit
SL 5 Replace
N2010 or N2000
SL 4 Escalate
1.8 Volt DC
at MP R2416
No
Yes
Yes
SL 5 Replace
C2419
SL 4 Escalate
SL 5 Replace
N2000 or N2010
SL 4 Escalate
Replace
X4300
No
Load ETS SW into the Phone
Insert Memory M2 Card
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Use Fault Trace SW
Fault trace SW
Logic
SIM Card control
Activate:
Memory Stick Test
Is the
Memory Stick Test
Passed
Flash the Phone with
Yes
EMMA SUCR SW
SL 5 Replace
N2000
SL 4 Escalate
Yes
No
1.8 Volt DC at
MP C2413
No
SL 5 Replace
N2010
SL 4 Escalate
SL 4 Replace
X2403
SL 5 Replace
N2000
No
No
1.8 Volt DC at
MP 43 (C2422
VMC18)
Yes
SL 4 Replace
X2403
SL 5 Replace
N2010
1228-1147 rev. 1
23 (129)
TROUBLESHOOTING Microphone Problems
- Earphone Problems
SEMC Troubleshooting Manual
C903
Microphone Problems
START
Step 1:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Step 2:
Continue with the
Microphone Problems TRS guide
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Loop Test
Audio Input: Mic1
Loop Mode: Analog
Audio Output: Loudspeaker
Apply Audio Loop
Earphone Problems
START
Step 1:
Replace Main Flex Assy and retest the Phone
If successful claim Main Flex Assy
If not go to step 2.
Step 2:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
1: Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Earphone
TROUBLESHOOTING
Replace
B3100
Yes
2.2 Volt DC at
MP 115 (R3119)
No
SL 5 Replace
N2000
SL 4 Escalate
Replace
X4202
More than
400mV AC Pk-Pk
Yes No
1 kHz signal at MP 21
(TP3104) and MP 22
(TP3105)
SL 5 Replace
N2000
SL 4 Escalate
1228-1147 rev. 1
24 (129)
TROUBLESHOOTING Loudspe aker Prob l e m s
- Handsfree Au x E a rphone Proble m s
SEMC Troubleshooting Manual
C903
Loudspeaker Problems
START
Replace Rear Cover Assy and retest the Phone
If successful claim Rear Cover Assy
Load ETS SW into the Phone
Connect: VBATT and DCIO/SEPI
Earphone Problems TRS guide
1: Use Fault Trace SW and go to:
Step 1:
If not go to step 2.
Step 2:
Use TRS Fixture
Use Fault Trace SW
Continue with the
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Loudspeaker
Can you
hear a 1 kHz tone
from the TRS Fixture
Loudspeaker
Yes
Replace
X3102
Hands-Free (PHF) Aux Earphone Problems
START
Before starting check if the Hands-Free (PHF) Connection is Ok.
System Connector Protection Test
If successful go to step 2.
Load ETS SW into the Phone
Connect: VBATT and DCIO/SEPI
Use Hands-Free (PHF) Set
Hands-Free (PHF) Aux Earphone Problems TRS guide
1: Use Fault Trace SW and go to:
2: Disconnect: DCIO/SEPI from the PBA
3: Connect the PHF set to the PBA
Note !
Step 1:
Perform the
Step 2:
Use TRS Fixture
Use Fault Trace SW
Continue with the
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
PHF Earphone
TROUBLESHOOTING
SL 4 Replace
N3100
SL 5 Replace
N2000
No
Is
any of MP 24
(TP3102) or MP 23
(TP3103) Short Circuit to
GND (Measure on the TRS
Fixture)
No
1.8 Volt DC
at MP 49 (R3153)
Yes
Disconnect:
VBATT and DCIO/SEPI
Remove the PBA from the TRS Fixture
Are
L3110 and L3111
= Max 1 Ohm
Yes
No
NoYes
SL 4 Replace
N3100
SL 5 Replace
C3107 or C3108
SL 4 Replace
N2410
SL 5 Replace
N2010
SL 5 Replace
L3110 or L3111
SL 4 Escalate
SL 5 Replace
X2405
SL 4 Escalate
SL 5 Replace
N2000 or N2010
SL 4 Escalate
SL 4 Replace
N3101
SL 5 Replace
N2000 or N2010
Replace
L2406
More than
300mV AC Pk-Pk
Yes
No
Yes
1 kHz signal at MP 12
(L2403) and
MP 13 (L2404)
No
More than
400mV AC Pk-Pk
1 kHz signal at MP 82
(C3149) and
MP 81 (C3150)
Yes
Disconnect VBATT and PHF Set and
Remove PBA from the TRS Fixture
Is L2406
= Max 1 Ohm
No
Can you
hear the 1 kHz tone
In the PHF
Earphone
Are
L2403, L2404,
= Max 2 Ohm
Yes
No Yes
Is any of
C2447 or C2448
Short Circuit
YesNo
No
Go to
Hands-Free (PHF)
Aux Microphone
Problems TRS guide
Replace
L2403 or L2404,
SL 5 Replace
C2447 or C2448
SL 4 Escalate
1228-1147 rev. 1
25 (129)
TROUBLESHOOTING Handsfree Au x Mi cro p h o ne Prob l e m s
- Connecti o n Probl e m s
SEMC Troubleshooting Manual
C903
Hands-Free (PHF) Aux Microphone Problems
START
Note !
Before starting check if the Hands-Free (PHF) Connection is Ok.
Step 1:
Perform the
System Connector Protection Test
If successful go to step 2.
Step 2:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Use Hands-Free (PHF) Set
Continue with the
Hands-Free (PHF) Aux Microphone Problems TRS guide
1: Use Fault Trace SW and go to:
Audio and FM Radio
Audio Loop Test
Audio Input: AUX1
Loop Mode: Analog
Audio Output: Loudspeaker
Apply Audio Loop
Replace
N2422
Hands-Free (PHF) Connection Problems
START
Step 1:
System Connector Protection Test
Hands-Free (PHF) Connection Problems TRS guide
Yes
Perform the
If successful go to step 2.
Step 2:
Power On the Phone
Use Hands-Free (PHF) Set
Continue with the
Can You
see the PHF icon
in the Phone Display
when the PHF set is
attached
NOT
No
Connect:
Hands-Free (PHF) Set
to the Phone
TROUBLESHOOTING
SL 4 Replace
N3101
SL 5 Replace
C3158 or N2000
SL 5 Replace
R3156 or N2000
SL 4 Escalate
Yes
MP 69 (C3158)
Short Circuit
to the GND
No
2: Disconnect: DCIO/SEPI from the PBA
3: Connect the PHF set to the PBA
Can You
Flash the Phone with
EMMA SUCR SW
Can you
hear any sound
from the TRS Fixture
Loudspeaker when
blowing into the
PHF Mic
No
Is
No
2V - 2.2V DC
at MP 69 (C3158)
Yes
Yes
Go to
Hands-Free (PHF)
Aux Earphone
Problems TRS guide
Yes No
see the PHF
icon in the Phone
Display
SL 4 Replace
N2422
SL 5 Replace
X2405 or N2010
SL 4 Replace
N3101
SL 5 Replace
X2405, C2462 or
C2463
VBATT and Hands-Free (PHF) Set
Remove the PBA from the TRS Fixture
Yes
Disconnect:
Are
L2401 and L2402
= Max 2 Ohm
No
Replace
L2401 or L2402
1228-1147 rev. 1
26 (129)
TROUBLESHOOTING FM Radio Problems
- FM Radio Anten na Prob l e m s
SEMC Troubleshooting Manual
C903
Go to
Loudspeaker
Problems TRS guide
Go to
Hands-Free (PHF)
Problems TRS guide
START
No
Yes
Is the
Loudspeaker
Ok
FM Radio Problems
No
FM Radio
Is not
working both with
Loudspeaker and
PHF set
Yes
Replace
L2408
START
No
FM Radio Antenna Problems
Is L2408
= Max 1 Ohm
Is the
FM Radio Problems
TRS guide
done?
Yes
Use the
Digital Multimeter Instrument (DMM)
for these measurements
No
TROUBLESHOOTING
Go to
FM Radio Problems
TRS guide
SL 5 Replace
N2000
SL 4 Escalate
SL 5 Replace
C3145 or C3146
SL 4 Escalate
1: Remove the DCIO/SEPI Cable
Frequency: 103 MHz
Amplitude/Level: 50 μV
FM Dev: +/-22.5 kHz
FM Rate: 1 kHz
Yes
2: 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:
More than
40 mV AC Pk-Pk
1 KHz signal at MP 7
(C3145) and MP 6
(C3146)
Is any of
C3145 or C3146
Short circuit
1: Load ETS SW into the Phone
2: Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
3: Use Fault Trace SW and go to:
Audio and FM Radio
FM Radio
Audio Output: Loudspeaker
Frequency: 103 MHz
Set Fm Radio
Signal Generator
NoYes
No
Instrument Settings:
Change Amplitude/Level to:
800 μV
Is there
any signal on
MP 7 (C3145) and
MP 6 (C3146)
Yes
Problems TRS guide
Go to
FM Radio Antenna
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 9
(X2405_Pin 2)
Connected to
GND
Replace
V2413
Claim Component
N1300
Yes
No
SL 5 Replace
C3306
SL 4 Escalate
SL 5 Replace
X2405
SL 4 Escalate
SL 4 Replace
N1300
SL 5 Replace
N2010
No
1.8 Volt DC
No Yes
at MP 10 (R3302
FM_INT)
Replace
N1300
1228-1147 rev. 1
27 (129)
TROUBLESHOOTING Bluetooth Probl e m s
- GSM Networ k Prob l e m s
SEMC Troubleshooting Manual
C903
1: Load ETS SW into the Phone
2: Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
3: Use Fault Trace SW
4: Use RF Probe connected to
the Spectrum Analyzer
Instrument
NOTE! Do not use 10:1 Divider
Spectrum Analyzer
Instrument Settings:
Frequency: 2402 MHz
Span: 10 MHz
Amplitude: 10 dBm
Use Peak Search (MKR)
Yes
Bluetooth Problems
Flash the Phone with EMMA SUCR SW and retest the Phone
Fault trace SW Settings:
TX and RX
Bluetooth
Channel 0
Set MaxPwr MOD 0
NOTE!
MODE 0 Frequency should be
2401.84 MHz
(±0.05 MHz)
3 dBm at
MP 4 (X1300_Pin 1)
Blt MaxPwr MOD 0
(±3 dBm)
START
Step 1:
If successful claim SW Flash
If not go to step 2.
Step 2:
Continue with the
Bluetooth Problems TRS guide
No
START
Replace Rear Cover Assy and retest the Phone
If successful claim Rear Cover Assy
Load ITP SW into the Phone
Perform SERP Calibration and retest the Phone
If successful claim SERP Calibration
Disassembly the Phone and continue with the
GSM Network Problems TRS guide
Replace
Faulty Component
SL 5 Replace
R1204, R1206 or
C1209
SL 4 Escalate
Step 1:
If not go to step 2.
Step 2:
If not go to step 3.
Step 3:
No
No
GSM Network Problems
Are
X1000, X1002
X1003,X1010,X1011,
X1030 and X1210
connected to
GND
Yes
Max 1 Ohm
between MP 42
(ST1200) and MP 41
(X1200_Pin 2)
Yes
Yes
Max 0.5
Ohm between
MP 40 (X1200_Pin 1) and
MP 41
(X1200_Pin 2)
Replace
N1200
No
TROUBLESHOOTING
Replace
X1200
Replace
N1300
Replace
BT_Antenna
or N1300
No
No
Fault trace SW Settings:
TX and RX
Bluetooth
Channel 0
Turn Off
(This must be done before
the next step)
Set MaxPwr MOD 1
NOTE!
MODE 1 Frequency is
2402.16 MHZ
(±0.05 MHz)
3 dBm at
MP 4 (X1300_Pin 1)
Blt MaxPwr MOD 1
(±3 dBm)
Yes
Is
MOD 1 Freq.
at least 230 KHz
higher than
MOD 0 Freq.
Yes
-1 dBm
at MP 3
(W1300_Pin 5) and
MP 5 (W1300_Pin 7)
(±5 dBm)
No
2.7 Volt DC at
MP 120 (C2210
VBT27)
Yes
Yes
No
Replace
W1300 or X1300
SL 5 Replace
N2000
SL 4 Escalate
SL 4 Replace
N1300 or N2410
SL 5 Replace
N2010
Is the
GSM Network
Problem
solved
No
Yes
Claim Component
N1200
SL 5 Replace
N2010 or N2000
SL 4 Escalate
1228-1147 rev. 1
28 (129)
TROUBLESHOOTING WCDMA Problems
SEMC Troubleshooting Manual
C903
This TRS guide can be used ONLY for C903 phones with WCDMA BAND I, II or V
Go to
GSM Network
Problems TRS guide
Replace
N1200
WCDMA BAND I,II,V Network Problems
START
NOTE !
Perform SERP Calibration and retest the Phone
Load ETS SW into the Phone
If successful claim SERP Calibration
Connect: VBATT and DCIO/SEPI
No
No
Step 1:
If not go to step 2.
Step 2:
Use TRS Fixture
Use Fault Trace SW
Is the
GSM Network
Ok
Yes
Is the
Problem with
WCDMA TX
Yes
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
WCDMA BAND VIII Network Problems
START
This TRS guide can be used ONLY for C903 phones with WCDMA BAND VIII support
Perform SERP Calibration and retest the Phone
Go to
GSM Network
Problems TRS guide
Replace
N1200
Go to
SERP Calibration
Load ETS SW into the Phone
If successful claim SERP Calibration
Connect: VBATT and DCIO/SEPI
No
No
NOTE !
Step 1:
If not go to step 2.
Step 2:
Use TRS Fixture
Use Fault Trace SW
Is the
GSM Network
Ok
Yes
Is the
Problem with
WCDMA TX
Yes
TROUBLESHOOTING
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
N1200
Replace
N1210
Replace
L1200
Replace
N1210
Is the
WCDMA TX
Problem solved
Yes
No
2.5V – 3V DC at
MP 114 (C1215
No
VBATT and DCIO/SEPI
= Max 0.5 Ohm
Yes
No
N2000 or N2010
WPA_A_EN)
Disconnect:
Is L1200
SL 5 Replace
SL 4 Escalate
Yes
Yes
3V – 3.8V DC at
MP 113 (C1206
VCC_WPA)
No
1.8 Volt DC at
MP 111 (R1220
WPA0_EN)
No
SL 5 Replace
N2010
SL 4 Escalate
Replace
N1200
Replace
N1210
Replace
L1200
Replace
N1210
Is the
WCDMA TX
Problem solved
Yes
No
2.5V – 3V DC at
No
VBATT and DCIO/SEPI
Yes
No
N2000 or N2010
MP 116 (C1214
WPA_C_EN)
Disconnect:
Is L1200
= Max 0.5 Ohm
SL 5 Replace
SL 4 Escalate
Yes
Yes
3V – 3.8V DC at
MP 113 (C1206
VCC_WPA)
No
1.8 Volt DC at
MP 112 (R1222
WPA2_EN)
No
SL 5 Replace
N2010
SL 4 Escalate
Yes
Claim Component
N1210
Yes
Claim Component
N1210
1228-1147 rev. 1
29 (129)
TROUBLESHOOTING A- G PS Probl e m s
- Accelerometer Probl e ms
SEMC Troubleshooting Manual
C903
Replace
N2410
No
No
1.8 Volt DC
At MP 102 (R1402
AGPS_LDO_EN)
Yes
1.8 Volt DC
At MP 105 (R1401
AGPS_PWRON)
Yes
A-GPS Problems
Go to Service Tests Menu and perform the GPS System Test
START
Step 1:
If successful Flash the Phone with EMMA SUCR SW
if not go to step 2.
Step 2:
Replace A-GPS Antenna and retest the Phone
If successful claim A-GPS Antenna
if not go to step 3.
Step 3:
Replace A-GPS PBA and retest the Phone
If successful claim A-GPS PBA
if not go to step 4.
Step 4:
Replace Main Flex Assy and retest the Phone
If successful claim Main Flex Assy
if not go to step 5.
Step 5:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Accelerometer Problems
START
Go to Service Tests Menu and perform the Accelerometer Test
If successful Flash the Phone with EMMA SUCR SW
Use Dummy Battery connected to Power Supply Channel 1 (VBATT)
Load ETS SW into the Phone
Step 1:
if not go to step 2.
Step 2:
Connect: DCIO/SEPI
Use Fault Trace SW
Fault Trace SW
General
Asic Revisions
Read All
TROUBLESHOOTING
26 MHz at
MP 103 (R2117
AGPS_CLK)
Yes
1: Disconnect:
VBATT and DCIO/SEPI
2: Connect:
VBATT and DCIO/SEPI
SL 5 Replace
N2010
SL 4 Escalate
No
No
1.8V Pk-Pk Pulses
at MP 104 (C1407)
Shortly after phone
1: Disconnect:
VBATT and DCIO/SEPI
VBATT and DCIO/SEPI
1.8V Pk-Pk Pulses
at MP 101 (C1406)
Shortly after phone
SL 4 Replace
N2410
SL 5 Replace
N2102
More than
Power On
Yes
2: Connect:
More than
Power On
No
Yes
SL 5 Replace
N2010
SL 4 Escalate
Replace
X4202
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
Replace
N2411
No
NOTE! Read X, Y and Z information
NOTE! Repeat this Test Sequence
Yes
No
Replace
N2411
Move the Phone and
Activate
Accelerometer Test again
in the Info Box.
10 Times
Can
you see
that X, Y and Z
information are
changing in the
info box
SL 5 Replace
N2010
SL 4 Escalate
No
Is the
Accelerometer
Problem solved
Yes
Claim Component
N2411
1228-1147 rev. 1
30 (129)
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