Sony Ericsson k850 Troubleshooting Manual
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Sony Ericsson k850 Troubleshooting Manual

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Trouble Shooting Guide, Mechanical
Applicable for K850
Contents
1
General ...............................................................................................................2
1.1
Service functions in the software ...........................................................2
1.2
Misuse and other no warranty issues ....................................................3
2
Appearance Problems.......................................................................................7
3
Network/Signal Problems .................................................................................8
4
On/Off Problems ..............................................................................................10
5
Audio Problems ...............................................................................................12
6
Key Problems...................................................................................................16
7
Slider Problems .....................................................Error! Bookmark not defined.
8
Display Problems ............................................................................................17
9
Illumination Problems .....................................................................................18
10
Alert Problems .................................................................................................19
11
SIM Problems...................................................................................................20
12
Charging/Capacity Problems .........................................................................21
13
Camera Problems ............................................................................................23
14
Data Communication Problems .....................................................................26
15
Software Problems ..........................................................................................27
16
Revision History ..............................................................................................28
4/000 21-1/FEA 209 544/131 A
©
Company Internal
Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical

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  • Page 1: Table Of Contents

    Display Problems ....................17 Illumination Problems ..................18 Alert Problems ....................19 SIM Problems....................20 Charging/Capacity Problems .................21 Camera Problems ....................23 Data Communication Problems ..............26 Software Problems ..................27 Revision History ....................28 4/000 21-1/FEA 209 544/131 A © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 2: General

    Flash LED Video call camera Memory Stick FM Radio Real time clock Total call time NOTE: Different names will occur depending on language setting and customization. 4/000 21-1/FEA 209 544/131 A 2(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 3: Misuse And Other No Warranty Issues

    Below are some examples of what is not covered by warranty. Front window broken LCD cracked due to Clear scratches Mark after drop Corrosion components due to misuse. drop. on the PCB. 4/000 21-1/FEA 209 544/131 A 3(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 4 SIM reader damaged by System connector damaged by the PCB. PCB. liquid. liquid Components around system System connector pad(s) connector damaged by liquid damaged by liquid 4/000 21-1/FEA 209 544/131 A 4(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 5 (See point 1.1.1) Note: There must be clear marks after liquid on the PCB before rejecting the phone for repair. Fig. 1.2.2 Fig. 1.2.3 4/000 21-1/FEA 209 544/131 A 5(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 6 Make a general visual inspection for misuse, corrosion or oxidation from liquid damage. No further action should be taken for a liquid damaged phone. Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 6(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 7: Appearance Problems

    NOTE: Misuse is not covered by warranty. Refer to chapter 1.2 • Visually inspect for improper gap Reassemble or replace damaged parts between seams as necessary. 4/000 21-1/FEA 209 544/131 A 7(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 8: Network/Signal Problems

    Complete (SIM/COMBO) • Visually inspect antenna contact pads If dirty or oxidized – Clean it and the antenna connector. • If damaged – Replace the Antenna PIFA. 4/000 21-1/FEA 209 544/131 A 8(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 9 If damaged – Handle the unit according to local directives. • If the issue has not been resolved ! Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 9(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 10: On/Off Problems

    Note: Take care not to bend the connector pin’s • If damaged – Handle the unit according to local directives. • Visually inspect the power key. If damaged – Replace on/off key. 4/000 21-1/FEA 209 544/131 A 10(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 11 Trouble Shooting Guide, Mechanical Problem Area Items to Check Repair Action Reference Image If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 11(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 12: Audio Problems

    If dirty – Clean • If damaged – Replace the Microphone If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 12(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 13 If clogged – Clean or replace the front. • Visually inspect the pads on the PCB. If dirty or oxidized – Clean • If damaged – Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 13(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 14 • Visually inspect the Speaker Flex BtB If improperly connected – Re-establish connected to the Main PCB. proper connection. • If damaged – Replace the Loudspeaker 4/000 21-1/FEA 209 544/131 A 14(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 15 Trouble Shooting Guide, Mechanical Problem Area Items to Check Repair Action Reference Image If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 15(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 16: Key Problems

    Key Foil Assy. keyboard (1.2.3…) is not functioning or is intermittent • If the issue has not been resolved ! Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 16(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 17: Display Problems

    NOTE: Misuse is not covered by warranty. Refer to chapter 1.2 If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 17(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 18: Illumination Problems

    “Display Problems” Key numeric Refer to “Keyboard numeric ” section under “Key Problems” illumination: Key navigation Refer to “Keyboard navigation ” section under “Key Problems” illumination: 4/000 21-1/FEA 209 544/131 A 18(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 19: Alert Problems

    If the issue has not been resolved ! • Handle the unit according to local directives. Loudspeaker Refer to “loudspeaker” section under “Audio Problems” 4/000 21-1/FEA 209 544/131 A 19(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 20: Sim Problems

    (Insert correct carrier’s SIM is being used correct SIM) If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 20(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 21: Charging/Capacity Problems

    If damaged – Handle the unit according to local directives. If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 21(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 22 If the issue has not been resolved ! • Replace the battery. If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 22(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 23: Camera Problems

    Note: Remember to put back the Shield Can Lid Camera when replacing the Camera. • If the issue has not been resolved ! Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 23(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 24 Note: Remember to put back the Shield Can Lid Camera when replacing the Camera. If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 24(28) © Company Internal Sony Ericsson Mobile Communications AB...
  • Page 25 If the issue has not been resolved ! • Replace the Camera. • If the issue has not been resolved ! Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 25(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 26: Data Communication Problems

    If the issue has not been resolved ! • Replace the BT antenna If the issue has not been resolved ! • Handle the unit according to local directives. 4/000 21-1/FEA 209 544/131 A 26(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 27: Software Problems

    Note: Do Software Update Content Refresh before sending the unit to a higher level. Do not scrap a phone that hasn’t been upgraded with Software Update Content Refresh. If the failure still occurs, handle the unit according to the local directives. 4/000 21-1/FEA 209 544/131 A 27(28) © Company Internal Sony Ericsson Mobile Communications AB...

  • Page 28: Revision History

    Trouble Shooting Guide, Mechanical 15 Revision History Rev. Date Changes / Comments 2007-10-09 Initial release 4/000 21-1/FEA 209 544/131 A 28(28) © Company Internal Sony Ericsson Mobile Communications AB...

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