Sony Ericsson U1a User manual

1230-3676 Rev2

Troubleshooting Guide

- electrical -

Satio

U1a,U1i,U_1

©Sony Ericsson Mobile Communications AB – Company Internal

Trouble Shooting Guide (elect)

1230-3676 Rev2

CONTENTS

1Troubleshooting Flow......................................................................3

1.1 Display.....................................................................................................3

1.2 Illumination.............................................................................................. 4

1.3 Keys and Sensors................................................................................... 5

1.4 Alert and RTC..........................................................................................6

1.5 Audio........................................................................................................7

1.6 On/Off.......................................................................................................8

1.7 Charging/Capacity .................................................................................. 9

1.8 SIM..........................................................................................................10

1.9 Camera...................................................................................................10

1.10 Data Communication............................................................................11

1.11 Memory Stick / Memory Card............................................................... 11

1.12 Network/Signal......................................................................................12

2Revision History.............................................................................13

©Sony Ericsson Mobile Communications AB – Company Internal 2(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

1 Troubleshooting Flow

For information about troubleshooting and optional troubleshooting equipment, refer to the

‘Generic Repair Manual – electrical’, section ‘Troubleshooting Directions’!

1.1 Display

Symptom:

Replace: Display problem

X2900 if damaged vision check all pins

Z2500, Z2501, Z2502, Z2503, Z2504, Z2505, Z2506 or Z2507

N2631, N2632, N2633 or N2636

N2630

©Sony Ericsson Mobile Communications AB – Company Internal 3(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.2 Illumination

Symptom:

Replace: No Display and Key illumination

L4010 if more than 1 Ohm

V4180

N4180

Symptom:

Replace: No Display illumination

X2900 if damaged vision check A23 and B23

N4180

Symptom:

Replace: No keys illumination

V4121 or V4122

N4180

Symptom:

Replace: No Camera Key Blue LED

X2902 if damaged vision check B5-B7

N4180

Symptom:

Replace:

No Torch LED ( White LED as autofocus assistant and movie recording assistant light

source)

X2842 if damaged vision check A6-A8 and A10-A11

N4180

Symptom:

Replace: No Camera Cover Blue LEDs (3 blue ornament LEDs)

X2842 if damaged vision check A1-A3 and A13-A15

N4180

Symptom:

Replace: No Tally LED (Red tally LED for video recording indication and self-timer indication)

X2842 if damaged vision check A1-A3 and A16

N4180

Symptom:

Replace: No Flash LED (Xenon flash)

X1018 if damaged

X2842 if damaged vision check B1-B9 and B11-B13

X2820 if damaged vision check A9 and A13

N2802

V2802

N2803

Symptom:

Replace: No Red LEDs and Green LED on Receiver FCP (Trickle Charge LED and Charger LEDs)

X2821 if damaged vision check A13-A17

©Sony Ericsson Mobile Communications AB – Company Internal 4(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.3 Keys and Sensors

Symptom:

Replace: Power On keys problems

X2821 if damaged vision check A2 and B1-B3

Symptom:

Replace: Touch Screen problems

X2821 if damaged vision check B14-B17

Symptom:

Replace: Volume Down key problems

X2902 if damaged vision check B2 and B4

Symptom:

Replace: Volume Up key problems

X2902 if damaged vision check A2 and B3

Symptom:

Replace: Mode Select key problems

X2902 if damaged vision check A4 and A6

Symptom:

Replace: Play / view key problems

X2902 if damaged vision check A5 and B4

Symptom:

Replace: Auto focus and Camera shutter problems

X2902 if damaged vision check A2,A6 and B3

Symptom:

Replace: Lock key problems

S2500

Symptom:

Replace: Light Sensor problems (no changes in display illuminations when covering light sensors)

X2821 if damaged vision check B12-B13

N4180

Symptom:

Replace:

Proximity Sensor problems (Display Illuminations does not turn off in a call when the

sensor are covered)

X2821 if damaged vision check B18-B25

Symptom:

Replace: Accelerometer problems

N2800

Symptom:

Replace: Camera cover detect problems

X2842 if damaged vision check B1-B3 and B10

©Sony Ericsson Mobile Communications AB – Company Internal 5(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.4 Alert / RTC

Symptom:

Replace: Vibrator problems

B4000

Symptom:

Replace: The clock gain or lose time. SERP calibrating is performed

B2000

Symptom:

Replace: The clock has to be set after the battery has been detached

C4036

©Sony Ericsson Mobile Communications AB – Company Internal 6(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.5 Audio

Symptom:

Replace: No Microphone

D5500

Symptom:

Replace: No Earphone / Ear speaker

X2821 if damaged Vision check A23-A24

Symptom:

Replace: No or bad Loudspeaker

L5506 or L5507 if more than 2 Ohm

V5500

N5506

Symptom:

Replace:

No Hands-free (PHF) Aux Microphone

X3000 if damaged Vision check 3-4

L3000 or L3002 if more than 2 Ohm

N5502

Symptom:

Replace:

No Hands-free (PHF) Aux Earphone / Aux Ear speaker

X3000 if damaged Vision check 2 and 5-6

L3001, L3003 or L3004 if more than 2 Ohm

N5502

N5500

Symptom:

Replace:

No Microphone and no Earphone / Ear speaker.

Phone stuck in PHF mode when PHF is not attached

V3001 if short circuit

N3000

Symptom:

Replace: No Hands-free (PHF) audio .Phone not recognizes PHF set

X3000 if damaged Vision check 8-9

N3000

Symptom:

Replace:

No FM Radio (PHF)

X3000 if damaged

N1403

N1400

©Sony Ericsson Mobile Communications AB – Company Internal 7(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.6 On/Off

Symptom:

Replace: Current draw greater than 300 mAmps

N1001 if module getting hot

Symptom:

Replace: Current draw when powered off

N1001

Symptom:

Replace:

Using no current when On/Off key is pressed and will not start. Starts when charger is

inserted

X2821 if damaged vision check A2 and B1-B3

Symptom:

Replace:

Draws current when On/Off key is pressed, returns to zero

L4000 , L4002 or L4005 if more than 1 Ohm

L4130 or L4131 if more than 2 Ohm

N4000

N4003

N4004

B2000

N1001

Symptom:

Replace: Will no power off

V2101

Symptom:

Replace: Other

X4000 if damaged

©Sony Ericsson Mobile Communications AB – Company Internal 8(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.7 Charging/Capacity

Symptom:

Replace:

No Charging from power outlet

X3000 or X4000 if damaged

C3013 if short circuit

V4001

Symptom:

Replace:

No Charging from computer via USB

X3000 if damaged

C3011 if short circuit

N3005

Symptom:

Replace: The clock has to be set after the battery has been detached

C4036

©Sony Ericsson Mobile Communications AB – Company Internal 9(13)

Trouble Shooting Guide (elect)

1230-3676 Rev2

Troubleshooting Flow

1.8 SIM

Symptom:

Replace: SIM not detected

X2842 if damaged Vision check A19-A20 and B15-B20

1.9 Camera

Symptom:

Replace: Main and VGA / VT Camera problems

L4132 if more than 2 Ohm

L4101 if more than 2 Ohm

N4150

N4152

Symptom:

Replace: Main Camera problems

X2820 if damaged vision check all pins

Symptom:

Replace: VGA / VT Camera problems

X2821 if damaged vision check A4-A13 ,A18-A21, B4-B11

©Sony Ericsson Mobile Communications AB – Company Internal 10(13)

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