Sony Ericsson C903 Cyber-shot Programming manual

C903
1228-1147 rev. 1
Troubleshooting Manual
APPENDIXCOMPONENT OVERVIEW FUNCTIONAL OVERVIEW
ABOUT
ABOUT TROUBLESHOOTING MEASUREMENT POINTS
C903
SEMC Troubleshooting Manual
1(129)

C903
1228-1147 rev. 1
ABOUT Contents
ABOUT
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 notified 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 confidential and should be treated as confidential 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.
Rev. Date Changes / Comments
106/19/2009Inititalrevision.
Revision History
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
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
SEMC Troubleshooting Manual
2(129)

C903
1228-1147 rev. 1
ABOUT Equipment List
ABOUT
C903 Equipment List
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.
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.
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
SEMC Troubleshooting Manual
3(129)

C903
1228-1147 rev. 1
ABOUT
ABOUT
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
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
Equipment List
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
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
SEMC Troubleshooting Manual
4(129)

C903
1228-1147 rev. 1
ABOUT
ABOUT
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
Step 4:
Connect DCIO Cable and SEPI Interface Cable – A1 according to Picture 10.
Picture 10
Equipment List
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
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.
SEMC Troubleshooting Manual
5(129)

C903
1228-1147 rev. 1
ABOUT
ABOUT
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
Picture 13
Equipment List
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
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.
SEMC Troubleshooting Manual
6(129)

C903
1228-1147 rev. 1
ABOUT
ABOUT
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 Cards
Local SIM
Any functional Local SIM Card
See Picture 19.
Picture 19
Equipment List
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
SMK RF Probe
Location: CSPN – Repair Instructions – Mechanical – Tool Catalogue – RepairToolsCatalogue.pdf
Part number: SXA 109 6356
See Picture 22.
Picture 22
SEMC Troubleshooting Manual
7(129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Power On/Off Problems
TROUBLESHOOTING
- USB and Software Flash Problems
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
No
No
START
Use the
Dummy Battery Connected to
Power Supply Channel 1
(VBATT)
Go to
Dead phone
Problems part 1
TRS guide
Yes
No
No
Connect a chargerNo
Yes
Go to
On-Off Key Problems
TRS guide
Yes
Go to
Dead Phone
Problems part 1
TRS guide
Yes
Yes
Go to
System Connector
Protection Test
After this go to
Data Communication
Problems TRS guide
Yes
Yes
NoYes
No
Is the phone
consuming more than
1mA when the phone
is powered off
Is it possible to
power on the phone
Is the
phone consuming
any current when
powering on the
phone
Is the Problem
solved
Is the phones
behavior as normal
Optimized
charging
Is the
Flash process
started
Flash
The phone with
the ETS software.
Is the ETS SW Flash
Successful
Is the Problem
solved
Is it possible to power
off the phone
Yes
Go to
Current
Consumption Test
After this go to
Charging Test
Yes
No
Claim for a
SW Upgrade
Yes
No
No
Go to
Data Communication
Problems
TRS guide
No
No
Is the current
consumption between
10mA to 70mA
CDA Software
Flash
Successful
Flash
the phone with
correct CDA
software
Yes
Flash
the phone with
correct CDA
software
Press ”C”
Connect USB from PC.
Update SEMC BOOT if
necessary. Run EMMA
SUCR SW. Is Phone
Flash Ok
Power On/Off Problems
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
Does
the Phone
Indicate charging
on the display
YesNo
Is the
Flash process
Start-up when using
EMMA SW
No
Yes
Is the
ITP SW Flash
Successful
Yes
SL 5 Replace
N2020
SL 4 Escalate
No
Use TRS Fixture
1: Connect: VBATT and DCIO/SEPI
2: Remove: DCIO/SEPI
3: Connect: USB Cable from the PC
2.7V – 3.3V DC
at MP 68 (C2437) and
1.8V DC at MP 76
(C2435)
Yes
Is MP 14
(X2405_Pin 10)
Short circuit to
GND
Yes Replace
V2421
Is MP 15
(X2405_Pin 11)
Short circuit to
GND
No
Replace
V2420
Yes
5 Volt DC at
MP 75 (C2433) No
SL 4 Replace
N2420
SL 5 Replace
R2442
No
Yes
SL 4 Replace
N2420
SL 5 Replace
N2010
No
Remove the PBA from the
TRS Fixture
Max
2 Ohm between
MP 14 (X2405_Pin 10)
and MP 65 (Z2400_Pin 2)
Max
0.5 Ohm between
MP 14 (X2405_Pin 10)
and MP Z2400_Pin 1)
No Replace
X2405
No
Replace
Z2400
Yes
Max
2 Ohm between
MP 15 (X2405_Pin 11)
and MP 66
(Z2400_Pin 3)
Max
0.5 Ohm between
MP 15 (X2405_Pin 11)
and MP 64
(Z2400_Pin 4)
Yes
No Replace
X2405
No
Replace
Z2400
Yes
SL 4 Replace
N2420
SL 5 Replace
N2010
Yes
USB and Software Flash Problems
SEMC Troubleshooting Manual
8(129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Dead Phone Problems
TROUBLESHOOTING
START
Step 1:
Try to recover the Phone by using
EMMA SW
Press key 2 and 5
Connect USB Cable to the Phone
and update SEMCBOOT after this
Run EMMA SUCR SW
and retest the Phone
If successful claim SW Flash
If not continue with Step 2.
Step 2:
Use TRS Fixture
Connect: VBATT Only
Is the
current consumption
more than 1mA
Try to trace
Faulty Component
by using Freezing Spray
Is
N2420 or N1200
getting hot
Replace
N2420 or N1200 Yes
No
No
Yes
Connect:
DCIO/SEPI to the Phone
Is the
connection between
MP 35 (X2201_Pin 4) and
MP 27 (X1040 / PBA
GND) Ok
Yes
SL 4 Escalate
SL 5 Replace
X2201 or R2200
No
SL 5 Remove
N2000
SL 4 Escalate
32 kHz
at MP 79 (C2100)
SL 4 Escalate
SL 5 Replace
B2100 or N2000
No
32 kHz RTCCLK at
MP 106 (R1404)
Yes
No
26 MHz
SYSCLK1 at
MP 89 (SP2108)
Yes
Yes
1.8V DC
At MP 86 (C2209
VDDE18) and 2.8V DC at
MP 119 (C1251
LDOA_OUT)
NoNo
Yes
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)
2.8V DC
at MP 110 (C1253)
Replace
N1200 or N1300
Yes
Replace
N1211 No
Are
all Voltages
Ok
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 the ETS SW
Yes
Is the
ITP SW Flash
Successful
SL 5 Replace
N2020
SL 4 Escalate
Yes
Go to Data
Communication
Problems TRS guide
No
No
Go to
Dead Phone
Problems part 2
SL 5 Replace
N2000
SL 4 Escalate
SL 4 Replace
N2420
SL 5 Replace
N2000
Is the
current consumption
still more than
1mA
Try to trace Faulty
Component by using
Freezing Spray
Yes
SL 5 Replace
N2000
SL 4 Escalate
No
1.8V DC
at MP 108 (R2115)
No
SL 5 Replace
N2010
SL 4 Escalate
Yes
Dead Phone Problems part 1
START
NOTE !
Before following this guide the
Dead Phone Problems part 1 TRS guide
must be finished.
Is the
VAUDIO26
Voltage
Ok
No
Is the
VANA25
Voltage
Ok
Yes
Is any of
N2200 or N2010
getting hot
No Yes
SL 5 Replace
N2000
SL 4 Escalate
No
Is the
VBT27
Voltage
Ok
Yes
Is N1300
getting hot
No
Is N2422
getting hot
Replace
N2422
Yes
No
SL 5 Replace
N2000
SL 4 Escalate
SL 4 Replace
N2200
SL 5 Replace
N2010
Replace
N1300
Yes
No
SL 5 Replace
N2000
SL 4 Escalate
Is the
VDIG
Voltage
Ok
Is any of
N2411 or N1300
getting hot
Yes
Yes
No
No
Yes
Go to
Dead Phone
Problems part 3
Is the
VBEAR26
Voltage
Ok
No
SL 5 Replace
N2000
SL 4 Escalate
Yes
Is X4202
damaged
No
Replace
X4202
Yes
Replace
N2411 or N1300
Dead Phone Problems part 2
SEMC Troubleshooting Manual
9(129)

C903
1228-1147 rev. 1
TROUBLESHOOTING
TROUBLESHOOTING
Dead Phone Problems - Display Problems
START
NOTE !
Before following this guide the
Dead Phone Problems part 2 TRS guide
must be finished.
Is the
VCORE12
Voltage
Ok
1.1V – 1.2V DC
at MP 74
(V2201_Cathode)
3.8 Volt DC at
MP 67 (L2201)
No
SL5 Replace
L2201
SL4 Escalate
No
Yes
No
Yes
1.1 – 1.2V DC
at MP 61 (C2220)
Replace
L2200
No
SL 5 Replace
N2000 or N2010
SL 4 Escalate
Is the
VCORE18
Voltage
Ok
No
SL 4 Replace
N2200
SL 5 Replace
C2231 or N2010
No
Yes
Yes
Is the
ETS SW Flash
Successful
SL 5 Replace
N2020
SL 4 Escalate
Yes
No
Yes
SL 5 Replace
V2201 or N2000
SL 4 Escalate
Is MP 56 (L2202)
Short circuit to GND Yes
SL 4 Replace
N2200
SL 5 Replace
N2010
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
Go to Data
Communication
Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Is
L2202 = Max 0.5 Ohm
SL 5 Replace
L2202
SL 4 Escalate
No
Yes
Dead Phone Problems part 3
Is the
Display Backlights
Ok
Go to
Display illumination
Problems TRS guide
No
Is the picture
too dark or
too light
Yes
Go to
TV OUT Problems
TRS guide
No
START
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
Display Pattern
Activate:
TV Test Pattern
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
Replace
X4202
Yes
Is the Display
Problem solved
Claim Component
X4202
Yes
SL 5 Replace
N2010
SL 4 Escalate
No
Is TV OUT
Ok
Yes
Go to
Opto Sense
Problems TRS guide
No
Display Problems
SEMC Troubleshooting Manual
10 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Display Illumination Problems
TROUBLESHOOTING
- Opto Sensor 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
3.7V - 3.8V DC
at MP 25 (TP4200)
No
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
3.7V - 3.8V DC at
MP 57 (N4201_Pin 3)
Yes
Replace
L4200
No
SL 4 Replace
N4201
SL 5 Replace
L4201
Yes
0 Volt DC at
MP 26 (TP4201) and
MP 20 (TP4202)
Yes
Replace
N4201 Yes
SL 5 Replace
N2000
SL 4 Escalate
No
Fault trace SW
MMI
Misc
Init Screen Testing
Led and Backlight
1: Deactivate:
Display Backlight
2: Activate:
Display Backlight
No
More
than 4 Volt Pk-Pk
Pulses at MP 58 (N4201_Pin1)
Shortly after the Display
Backlight has been
activated
Replace
X4202 Yes
SL 4 Replace
V4200
SL 5 Replace
N2000
No
Display Illumination 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:
Replace Navigation PBA Assy and retest the Phone
If successful claim Navigation PBA Assy
If not go to step 3.
Step 3:
Replace Display and retest the Phone
If successful claim Display
if not continue with the
Opto Sense Problems TRS guide
Is the
Display
illumination (LEDs)
Ok
Go to
Display illumination
Problems TRS guide
No
Can you see
any picture/image in
the Display
Yes
Go to
Dispaly Problems
TRS guide
No
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Yes
1.8V – 2.3V
Pk-Pk Pulses at
MP 107 (R2250 OPTO_EN)
Shortly after phone
Power On
SL 5 Replace
N2000
SL 4 Escalate
No
Yes
3V – 3.5V
Pk-Pk Pulses at
MP 37 (TP2203 VOPTO30)
Shortly after phone
Power On
No
Replace
N2210
Replace
X4202
Yes
Is the
Opto Sensor Problem
solved
Claim Component
X4202
No Yes
SL 5 Replace
N2000
SL 4 Escalate
Opto Sense Problems
SEMC Troubleshooting Manual
11 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING On-Off Key
TROUBLESHOOTING
- Numeric Keypad Problems
START
Step 1:
Replace Navigation PBA Assy and retest the Phone
If successful claim Navigation PBA Assy
if not go to step 2.
Step 2:
Replace Main Flex Assy and retest the Phone
If successful claim Main Flex Assy
if not go to step 3.
Step 3:
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Is the
Problem with
Power Off
No
3.7 Volt DC
at MP 46
(V2470_Cathode)
Yes
Yes
SL 4 Replace
X4202
SL 5 Replace
N2000
No
1.8 Volt DC
at MP 44
(V2470_Anode)
Replace
V2470 Yes
SL 5 Replace
V2480, R2459, R2471
or N2010
SL 4 Escalate
No
SL 4 Replace
V2470 or X4202
SL 5 Replace
N2000
On-Off Key Problems
START
Load ETS SW into the Phone
Use TRS Fixture
Connect Key Flex Assy and Keyboard 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 on the Key Flex Assy and the Camera Button (S2403)
If successful Replace Key Flex Assy
If not then continue with the
Numeric Keypad Problems TRS guide
No
Go to
Camera Button
Problems TRS guide
No
Is the
Camera Button
S2403
Ok
1: Disconnect the VBATT and DCIO/SEPI
Disconnect the Key Flex Assy from the PBA
2: Connect the VBATT and DCIO/SEPI again
SL 5 Replace
R2454, R2470 or
N2010
SL 4 Escalate
1.8 Volt DC
at MP 50
(V2480_Pin C2)
SL 5 Replace
V2480 or N2010
SL 4 Escalate
Yes
No
Is
MP 50 (V2480_Pin C2)
Short circuit to
GND
Yes
Is
MP 45 (V2481_Pin C2)
Short circuit to
GND
Yes
SL 5 Replace
V2481 or N2010
SL 4 Escalate
Yes
1.8 Volt DC
at MP 45
(V2481_Pin C2)
No
SL 5 Replace
R2493, R2472 or
N2010
SL 4 Escalate
No
Is MP 51
(V2482_Pin C1)
or MP 53 (V2482_Pin
C2) Short circuit to
GND
Yes
SL 5 Replace
V2482 or N2010
SL 4 Escalate
Yes
1.8 Volt DC
at MP 51
(V2482_Pin C1)
No
SL 5 Replace
R2456, R2475 or
N2010
SL 4 Escalate
No
1.8 Volt DC
at MP 53
(V2482_Pin C2)
Yes
SL 5 Replace
R2491, R2474 or
N2010
SL 4 Escalate
No
Is
MP 91 (V2472_Pin C2)
Short circuit to
GND
Yes
SL 5 Replace
V2472 or N2010
SL 4 Escalate
Yes
Is
MP 47 (V2476_Pin C1)
Short circuit to
GND
No
SL 5 Replace
V2476 or N2010
SL 4 Escalate
Yes
SL 4 Replace
X2400
SL 5 Replace
R2485, R2486, R2487
R2488 or R2489
No
Numeric Keypad Problems
SEMC Troubleshooting Manual
12 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING
TROUBLESHOOTING
Navigation Keypad Problems - Volume Up and Down 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
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
No
1: Disconnect the VBATT and DCIO/SEPI
2: Disconnect and Remove the
Main Flex Assy and Navigation PBA Assy
from the TRS Fixture
Are all
Numeric Keys
Ok
Go to
Numeric Keypad
Problems TRS guide
Is
MP 48 (V2476_Pin C2)
Short circuit to
GND
Yes
SL 5 Replace
V2476 or N2010
SL 4 Escalate
Yes
SL 4 Replace
X4202
SL 5 Replace
R2489 or N2010
No
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
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
No
Are all
Numeric Keys
Ok
Go to
Numeric Keypad
Problems TRS guide
Yes
Replace
X4300
Volume + and - Button Problems
SEMC Troubleshooting Manual
13 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Camera Button Problems
TROUBLESHOOTING
- Play & Camera Mode Button Problems
START
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
1.8 Volt DC
at MP 92
(S2403_Pin A1)
Is MP 93
(S2403_Pin B)
and MP 94 (S2403_Pin
C1) Short circuit
to GND
Yes
Press the
S2403 Camera Button
No
0 Volt DC
at MP 92
(S2403_Pin A1)
SL 5 Replace
N2010
SL 4 Escalate
Yes
Replace
S2403
SL 5 Replace
V2472, V2471 or
N2010
SL 4 Escalate
Yes
Is MP 92
(S2403_Pin A1)
Short circuit to GND
No
Yes
Replace
S2403
No
No
SL 5 Replace
V2481 or N2010
SL 4 Escalate
1.8 Volt DC
at MP 100
(V2481_Pin C1)
Yes
SL 5 Replace
R2492, R2473 or
N2010
SL 4 Escalate
No
Camera Button Problems
START
Go to Service Tests Menu and perform Keyboard Test
If successful flash the Phone with EMMA SUCR SW
if not continue with the
Play and Camera Mode Button Problems TRS guide
No
Are all
Numeric Keys
Ok
Go to
Numeric Keypad
Problems TRS guide
Yes
Replace
Key Flex Assy
Play and Camera Mode Button Problems
SEMC Troubleshooting Manual
14 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING
TROUBLESHOOTING
Navigation Keypad LED Problems
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
Replace
X4202
Yes
Are all
Navigation PBA
LEDs On
(except V8450)
Yes
Are
all WHITE LEDs
Ok
No
SL 4 Replace
X4202
SL 5 Replace
N2000
No
Are the
BLUE LEDs
Ok
Yes
Check the following WHITE LEDs:
V8420, V8421, V8422, V8423
V8424, V8425, V8426 and V8427
Check the following BLUE LEDs:
V8431, V8434,
V8440, V8441, V8442 and V8443
Replace
Main Flex Assy or
Navigation PBA
Assy
Yes
3.8 Volt DC
at MP 55
(N4240_Pin 3)
No
No
Yes
Replace
N4240 or N2410
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
Go to
Navigation Keypad
LED Problems part 2
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate:
Navigation Keypad
0 Volt DC
at MP 55
(N4240_Pin 3)
SL 4 Replace
N4240
SL 5 Replace
N2000
Navigation Keypad LED Problems part 1
START
Note! Before following this guide
the Navigation Keypad Problems part 1
TRS guide must be finished.
Replace
Main Flex Assy or
Navigation PBA
Assy
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: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Deactivate:
Navigation Keypad
2: Activate:
CleraKey BLUE LED
Is V8450
”C” Key BLUE LED
Ok
Yes
1.8 Volt DC
at MP54
(N4240_Pin 1)
No
Replace
N2410
No
Replace
N4240 or X4202 Yes
Navigation Keypad LED Problems part 2
SEMC Troubleshooting Manual
15 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Numeric Keypad LED Problems
TROUBLESHOOTING
- Camera Button 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
Numeric Keypad LED Problems
START
SL 4 Replace
V4350 or V4360
SL 5 Replace
N2000
Camera Button LED Problems
SEMC Troubleshooting Manual
16 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Tally LED Problems
TROUBLESHOOTING
- Trickle Charge LED Problems
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:
Tally LED
Continue with the Tally LED Problems TRS guide
1.8 Volt DC
at MP 30 (R4310)
Replace
N2410 No
SL 4 Replace
V4310
SL 5 Replace
V4311
Yes
Tally LED Problems
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:
Charge LED
Continue with the Trickle Charge LED Problems
TRS guide
1.8 Volt DC
at MP 95
(V4350_Anode)
SL 5 Replace
N2000
SL 4 Escalate
No Replace
V4350 or V4360
Yes
Trickle Charge LED Problems
SEMC Troubleshooting Manual
17 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Flash LED Problems
TROUBLESHOOTING
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
Is the
Flash LED
Ok
Go to Flash LED
Problems in
Torch Mode
No
1: Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Deactivate:
Flash LED
2: Activate
Main Camera
Yes
1.8 Volt DC at
MP 98 (R2298)
Replace
N2410
No
1.8 Volt DC at
MP 99 (C2298)
Yes
Replace
N2271
NoYes
SL 4 Replace
N4401 or X4300
SL 5 Replace
N2000 or N2010
Flash LED Problems in Camera 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)
Replace
V4110, V4111
or N4401
Yes
3.8 Volt DC at
MP 96 (L4102)
No
Replace
L4102
No
SL 4 Replace
N4401
SL 5 Replace
N2000 or N2010
Yes
Flash LED Problems in Torch Mode
SEMC Troubleshooting Manual
18 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Camera Lens LED Problems
TROUBLESHOOTING
- Camera Cover Detect Problems
START
Step 1:
Replace SIM Flex Assy and retest the Phone
If successful claim SIM 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 and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Camera Lens LED
Continue with the Camera Lens LED Problems TRS guide
1.8 Volt DC
at MP 19 (R4320)
Replace
N2410 No
SL 4 Replace
X4300
SL 5 Replace
V4321
Yes
Camera Lens LED Problems
START
Step 1:
Replace Battery Cover Assy and retest the Phone
If successful claim Battery Cover Assy
If not go to step 2.
Step 2:
Use TRS Fixture
Connect SIM Flex Assy to the PBA
Connect: VBATT and DCIO/SEPI
Continue with the
Camera Cover Detect Problems TRS guide
NOTE! The MP is located on the SIM Flex Assy
NoYes
1.8 Volt DC
at MP 121
(B8400_Pin 1)
SL 4 Replace
X4300
SL 5 Replace
N2010
Replace
SIM Flex Assy
Camera Cover Detect Problems
SEMC Troubleshooting Manual
19 (129)

C903
1228-1147 rev. 1
TROUBLESHOOTING Main Camera Problems
TROUBLESHOOTING
START
Step 1:
Flash the Phone with EMMA SUCR SW and go to Service Tests Menu
Perform: Main and VGA/VTF Camera Tests
If the Tests are successful then claim SW Flash
if not go to step 2.
Step 2:
Replace Camera 5 Mpixel CMOS Slim and retest the Phone
If successful claim Camera 5 Mpixel CMOS Slim
If not go to step 3.
Step 3:
Replace SIM Flex Assy and retest the Phone
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
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate:
Main Camera Test
NOTE !
Ignore these messages when they appear
in the Trace window
(In the right corner of the Fault Trace SW)
”Error_CommandFailed, ERR:”
1.8 Volt DC
at MP 87 (N2206_Pin 4)
Shortly after the Main
Camera Test has been
activated
SL 5 Replace
N2010
SL 4 Escalate
No
Use Fault Trace SW and
Repeat the Main Camera Test
Yes
1.8 Volt DC
at MP 88 (R2290)
Shortly after the Main
Camera Test has been
activated
No
Use Fault Trace SW and
Repeat the Main Camera Test
Yes
2.8 Volt DC
at MP 29 (TP2216)
Shortly after the Main
Camera Test has been
activated
Replace
N2206 No
Use Fault Trace SW and
Repeat the Main Camera Test
Yes
2.8 Volt DC
at MP 33 (TP2213)
Shortly after the Main
Camera Test has been
activated
Replace
N2290
No
Use Fault Trace SW and
Repeat the Main Camera Test
Yes
1.8 Volt DC
at MP 32 (TP2214)
Shortly after the Main
Camera Test has been
activated
No
Yes
Go to
Main Camera
Problems Part 2
Replace
N2290
Main Camera Problems part 1
START
NOTE !
Before following this guide the
Main Camera Problems part 1
TRS Guide must be finished.
Use Fault Trace SW and
Repeat the Main Camera Test
1.8 Volt DC
at MP 28 (TP2215)
Shortly after the Main
Camera Test has been
activated
Disconnect
VBATT and DCIO/SEPI
No
Are
L2260 and L2261
= Max 1 Ohm
Replace
N2203
Yes
Replace
L2260 or L2261
No
Yes
Is the
Main Camera Problem
Solved
Claim Component
X4300
Yes
SL 5 Replace
S4300 or N2010
SL 4 Escalate
No
26 MHZ
CAMSYSCLK
at MP 52 (C2103 Shortly )
after the Main Camera
Test has been
activated
SL 5 Replace
N2010
SL 4 Escalate
No
Yes
Use Fault Trace SW and
Repeat the Main Camera Test
1.2 Volt DC
at MP 31 (TP2217)
Shortly after the Main
Camera Test has been
activated
No
Yes
Are
MP 27 (X1040)
and X1041
connected to
GND
Yes
Replace
X1040 or X1041 No
Replace
X4300
Main Camera Problems part 2
SEMC Troubleshooting Manual
20 (129)