Ericsson R250S Guide

Approved according to 1776-1/ FEA 209 544
Mechanical Trouble Shooting instruction
R250s
4/00021-1/FEA 209 544/18.B
R250s Mechanical Trouble Shooting Instruction

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 2(16)
Contents
1 Appearance problem ........................................................................ 3
2 Network problem .............................................................................. 4
3 On/Off problem ................................................................................. 5
4 Audio problem .................................................................................. 6
5 Display/Light problem ...................................................................... 7
6 Capacity/Charging problem ............................................................ 8
7 SIM problem .................................................................................... 9
8 Key/ Flip problem ........................................................................... 10
9 Alert problem .................................................................................. 12
10 Data communication problem ....................................................... 13
11 Software problem ............................................................................ 14
12 Revision History .............................................................................. 15

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 3(16)
1 Appearance problem
ACTIONS
• Check the general condition of the System Connector Fig 1 and the Battery Con-
nector Fig 2 for corrosion and oxidation.
•No action is taken for liquid damaged telephones. Send the unit according to
local company directive.
• Check that the Antenna is not damaged and tightly mounted. Fig 3.
• Check that the SIM holder is working correctly. Fig 4.
• Check if the Battery fits correctly and that there is no damage at the rubber gas-
ket Fig 5. If there is, change the Battery or send the unit according to local com-
pany directive.
• Check the Front cover for cracks and mechanical damage Fig 6. If necessary
replace the Front cover according to the replacement instruction or send the unit
according to local company directive.
Fig 1 Fig 2 Fig 3
Fig 4 Fig 5 Fig 6

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 4(16)
2 Network problem
ACTIONS
• Make a general visual inspection for oxidation, corrosion or liquid damages.
No action is taken for liquid damaged telephone, send the unit according to local
company directive.
• Insert a new SIM card and switch ON the telephone. Check that there is a signal
strength shown on the display. If necessary replace the antenna according to the
antenna replacement instruction.
• Check the antenna for dirt or mechanical damage Fig 1. If necessary clean or
replace it according to replacement instructions.
• Make sure that there is no damage at the external antenna connector and the
cover Fig 2.
NOTE! Make sure the phone is not locked out of the system due to theft.
If the fault still remains, send the unit according to local company directive.
Fig 1 Fig 2

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 5(16)
3 On/Off problem
ACTIONS
• Make a general visual inspection for oxidation or corrosion from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to
local company directive.
• Check that the battery’s contact surface is free from dust/dirt and mechanical
damage. If necessary clean it.
• Check the battery connector pogopins for dirt/mechanical damage Fig 1. If nec-
essary, replace them according to the replacement instruction.
• Make a general visual inspection for oxidation or corrosion from liquid damages.
No action is taken for liquid damaged telephones, send the unit according to
local company directive.
• Check the keyboard domefoil Fig 2.and the dome switches Fig 3.for malfunc-
tion. If necessary replace them according to the replacement instruction.
• Change the battery.
• If the fault still remains, send the unit according to local company directive.
Fig 1 Fig 2 Fig 3

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 6(16)
4 Audio problem
ACTIONS
Make a general visual inspection for oxidation or corrosion from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to local
company directive.
• Call a network-connected telephone and check if it is the microphone or the
loudspeaker that is the cause of the audio problem.
• Check the loudspeaker Fig 1 for dirt, oxidation, mechanical damage. If neces-
sary clean it or replace it, according to the loudspeaker replacement instruction.
• Check the loudspeaker pogo contacts Fig 2 for dirt, oxidation, mechanical dam-
age. If necessary replace it, according to mechanical instruction.
• Check the microphone Fig 3 at the front cover for dirt, oxidation, mechanical
damage. If necessary replace the microphone/front cover according to replace-
ment instruction.
• Check the microphone elastome Fig 4 for mechanical damage and that it is prop-
erly fitted. If necessary replace it according to the microphone elastome replace-
ment instruction.
• Check the system connector Fig 5 for dirt, oxidation, mechanical damages. If
necessary clean or replace it.
• If the fault still remains, send the unit according to local company directive.
Fig 1 Fig 2 Fig 3
Fig 4 Fig 5

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 7(16)
5 Display/Light problem
ACTIONS
• Make a general visual inspection for oxidation, corrosion or liquid damages.
No action is taken for liquid damaged telephone, send the unit according to local
company directive.
• Switch ON the telephone and check the display for missing segments or bad con-
trast. Fig 1. If necessary replace the display assembly according to the display
replacement instruction. Fig 2.
• If the fault still remains, send the unit according to local company directive.
Fig 1 Fig 2

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 8(16)
6 Capacity/Charging problem
ACTIONS
• Make a general visual inspection for oxidation, corrosion or liquid damages.
No action is taken for liquid damaged telephone, send the unit according to local
company directive.
• Test the telephone with a fully charged battery. If necessary replace the Battery.
• Check the battery’s condition and the battery’s contact surface for oxidation or
corrosion Fig 1. If necessary replace the Battery.
• Make sure that the rubber gasket on the battery Fig 2 isn’t damaged.
• Check that the battery connector is free from dirt, oxidation, mechanical damage
and that the battery connector pogo pins Fig 3 are elastic. If necessary clean it.
• Check the system connector Fig 4 for dirt, oxidation or mechanical damage. If
necessary clean it.
If the fault still remains, send the unit according to local company directive.
Fig 1 Fig 2 Fig 3
Fig 4

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 9(16)
7 SIM problem
ACTIONS
Make a general visual inspection for oxidation or corrosion from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to local
company directive.
• Test the telephone with a new SIM card.
• Check that the SIM Card Lid Fig 1 is properly fitting, if necessary replace it.
• Check the SIM connector Fig 2 for dust, oxidation, dirt and mechanical damage.
If necessary clean it, or replace it according to mechanical instruction.
• Make a general visual inspection for oxidation or corrosion from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to
local company directive.
If the fault still remains, send the unit according to local company directive.
Fig 1 Fig 2

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 10 (16)
8 Key/ Flip problem
ACTIONS
• Make a general visual inspection for corrosion or oxidation from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to
local company directive.
• With the telephone ON, press the keyboard buttons Fig 1. A “click” sound
should be heard from the buzzer, if it is activated in the settings menu, and num-
bers shall appear in the display. Feel the keys for response. If necessary replace
the front and the dome foil according to the replacement instruction.
• With the telephone ON, press the volume buttons Fig 2,on the left side of the
phone. A “click” sound should be heard from the buzzer, if it is activated in the
settings menu. Feel that there is response at the buttons. If necessary replace the
dome switches according to the replacement instruction.
• With the telephone ON, slide the mode switch upwards Fig 3. A warning sound
should be heard from the buzzer. If necessary replace the front cover according
to the replacement instruction.
• With the telephone ON, press the PTT button Fig 4,on the left side of the phone.
A “click” sound should be heard from the buzzer, if it is activated in the settings
menu. Feel that there is response at the button. If necessary replace the dome
switch according to the replacement instruction.
• WiththetelephoneON,presstheAlertbutton Fig5,atthetopofthephone.
A “click” sound should be heard from the buzzer, if it is activated in the settings
menu. Feel that there is response at the button. If necessary replace the dome
switch according to the replacement instruction.
• Make a general visual inspection for corrosion or oxidation from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to
local company directive.
• If the fault still remains, send the unit according to local company directive.
Pictures on next side.

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 11 (16)
Fig 1 Fig 2 Fig 3
Fig 4 Fig 5

R250s Mechanical Trouble Shooting Instruction
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9 Alert problem
ACTIONS
• Make a general visual inspection for corrosion or oxidation from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to
local company directive.
9.1 Buzzer problem
• Insert a SIM-card and switch ON the telephone.In menu settings Ring level set
Buzzer ON.Increase/ decrease the ring level, the phone rings once with the actual
level.
• Check that the buzzer is properly connected to the board Fig 1. If it is, replace
the buzzer according to the replacement instruction.
• If the fault still remains, send the unit according to local company directive.
9.2 Vibrator problem
• Insert a SIM-card and switch ON the telephone. In menu settings Ring level set
Vibrator ON. Check that the telephone vibrates when the settings are stored.
• Check that the vibrator is properly connected to the board Fig 1. If it is, replace
the vibrator according to the replacement instruction.
If the fault still remains send the unit according to local company directive.l
Fig 1

R250s Mechanical Trouble Shooting Instruction
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10 Data communication problem
ACTIONS
• Make a general visual inspection for corrosion or oxidation from liquid damages.
No action is taken for liquid damaged telephone, send the unit according to
local company directive.
• NOTE! all Fax and Data calls are initiated from the appropriate computer soft-
ware.
If the SIM card does not support separate fax and data numbers, you need to turn on
the data menus.In menu settings Data menus select YES.
Make sure there is no damage at the System Connector Fig 1, if necessary replace it
according to the replacement instruction.
If the fault still remains send the unit according to local company directive.
Fig 1

R250s Mechanical Trouble Shooting Instruction
4/00021-1/FEA 209 544/18.B 14 (16)
11 Software problem
ACTIONS
If there are problems with the response of the key board commands and/ or spelling
errors in the menu, that are not related to mechanical damage, make a software reset
and flash the phone with the latest soft ware.
If the fault still remains, send the unit according to local company directive.

R250s Mechanical Trouble Shooting Instruction
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12 Revision History
Rev. Date Changes
B 99-09-27 Division into chapters and chapters headings changed.
“Send to next/higher level” replaced with “Send the unit
according to local company directive.”

R250s Mechanical Trouble Shooting Instruction
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