Sony-Ericsson T100 Service Manual
Trouble shooting guide SP/ Mechanical
Trouble shooting guide SP/ Mechanical
Applicable for T100/T102/T105/T106
Contents:
Explanations ....................................................................................................................2
1
1.1 Service functions in the software.......................................................................2
1.2 Liquid damage ...................................................................................................2
1.2.1 Water damage indicator..................................................................................... 2
1.2.2 Action ................................................................................................................ 3
2 Appearance Problems..................................................................................................... 4
3 Network Problems ..........................................................................................................5
4 On/Off Problems ............................................................................................................. 6
5 Audio Problems...............................................................................................................7
6 Display/Illumination Problems ......................................................................................8
7 Capacity/Charging Problems......................................................................................... 9
8 Key Problems ................................................................................................................10
9 Alert Problems ..............................................................................................................11
10 Data Communication Problems................................................................................... 12
11 SIM-Problems ...............................................................................................................13
12 Software Problems ........................................................................................................ 14
13 Revision History............................................................................................................ 15
4/00021-1/FEA 209 544/78 C
Ericsson Mobile Communications AB
Approved according to 1776-1/FEA 209 544
Trouble shooting guide SP/ Mechanical
1 Explanations
1.1 Service functions in the software
The service menu will be accessed with the following key combination.
⇒*⇐⇐*⇐*
They are as follows:
1. Service info
2. Service settings
3. Service test
4. Text labels
In the software of the phone there is a built in service functionality that allows you to test
some of the functions of the phone. (See point 3 above) This is how it looks:
1. Display
2. LED/Illumination
3. Keyboard
4. Buzzer
5. Vibrator
6. Earphone
7. Microphone
8. Real Time Clock
1.2 Liquid damage
1.2.1 Water damage indicator
In the phone there is placed a sticker that can give you a hint to see if the phone is damage by
liquid or not. This sticker is located near the SIM reader (Fig. 1.1) and it is possible to see it
without disassemble the phone.
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Ericsson Mobile Communications AB
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Trouble shooting guide SP/ Mechanical
Fig. 1.1
On the pictures below you will see the difference between a sticker that has been in contact
with liquid (Fig. 1.3) and one that has not been exposed to liquid (Fig. 1.2).
This sticker is ok
Fig. 1.2
This sticker is not
ok
This sticker has not been in contact with liquid.
This sticker has been in contact with liquid. As you can
see the red dots has turn into pink dots. In this case you
should check the phone for liquid damage
(See point 1.2.2).
Fig. 1.3
1.2.2 Action
Make a general visual inspection for corrosion or oxidation from liquid damage. No further
action should be taken for a liquid damaged phone. Handle the unit according to local
company or GSP directives.
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Ericsson Mobile Communications AB
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Trouble shooting guide SP/ Mechanical
2 Appearance Problems
• Make a general visual inspection for corrosion or oxidation from liquid damage according
to point 1.2
• Check the front cover (Fig. 2.1) and the rear cover (Fig. 2.2) for damage and that the parts
fit correct. Replace faulty components if necessary.
Fig. 2.1 Fig. 2.2
• Check the keypad (Fig. 2.3) for damage, scratches and that no keys occur more than ones.
Replace it if necessary.
If the failure still occurs, handle the unit according to the local company or the GSP directives.
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Ericsson Mobile Communications AB
Fig. 2.3
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Trouble shooting guide SP/ Mechanical
3 Network Problems
• Make a general visual inspection for corrosion or oxidation from liquid damage according
to point 1.2
• Insert a correct SIM-card and switch the phone on. Check that the phone gets service and
that the signal strength indicator shows a correct value at the display. Compare with a
properly working phone.
• Check that the antenna connector M_J1 (Fig. 3.1) is not dirty or oxidized. Clean it if
necessary.
• Check that the antenna cover assembly (Fig. 3.2) is not mechanical damaged, dirty or
oxidized. Replace it if necessary.
If the failure still occurs, handle the unit according to the local company or the GSP directives.
Fig. 3.1 Fig. 3.2
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Ericsson Mobile Communications AB
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