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Trouble Shooting Guide, Mechanical
Trouble Shooting Guide, Mechanical
Applicable for J220 and J230
Contents
1
General............................................................................................................................ 2
2
Appearance Problems....................................................................................................2
3
Power Problems..............................................................................................................3
4
Network/Signal Problems .............................................................................................. 5
5
Audio Problems .............................................................................................................. 6
Microphone.......................................................................................................................6
Earphone 6
6
Alert Problems................................................................................................................8
Vibrator 8
Loudspeaker .....................................................................................................................8
7
Key Problems..................................................................................................................9
8
Display Problems..........................................................................................................10
Display 10
Illumination ....................................................................................................................10
9
SIM Problems ............................................................................................................... 11
10 Charging/Capacity Problems......................................................................................12
11 Data Communication Problems.................................................................................. 13
12 Software Problems........................................................................................................ 13
13 Revision History............................................................................................................ 14
4/00021-1/FEA 209 544/99 A
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Sony Ericsson Mobile Communications AB
Approved according to 6/0360-4/FPC 101 3622/2
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Trouble Shooting Guide, Mechanical
1 General
This document outlines the mechanical repairs that should be made in an attempt to fix the common failures that are seen in the field.
To gain a complete understanding of how to test and repair a specific failure, this document should be used in conjunction with the
Test Instructions, Mechanical and the Working Instructions, Mechanical.
2 Appearance Problems
Problem Area
Appearance
Items to Check
Visually inspect the cosmetic quality of
all user viewable surfaces
Visually inspect all keys
Visually inspect for improper gap
between seams
Repair Action Reference Image
• If dirty – Clean
• If unacceptably scratched or damaged –
Replace parts that are unacceptable
• If dirty – Clean
• If unacceptably damaged – Replace
• Reassemble or replace damaged parts as
necessary
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Trouble Shooting Guide, Mechanical
3 Power Problems
Insert a regular functionality Battery and connect a Charger to the phone. The phone will charge the Battery without turning on the
phone while the Battery voltage is too low. (It takes less than 10 minutes) When the Battery voltage is high enough to turn on the
phone, it will show “charging only” on the LCD.
Problem Area
No Power On
Items to Check
Check whether the phone Keypad
illuminated
Visually inspect contact the pads of
Battery
Visually inspect Battery Connector
Visually inspect Battery pads
Repair Action
• If the Keypad are undetectable, refer to
the “Display Problems
• If dirty or oxidized – Clean pads
• If damaged – Replace Battery
• If dirty or oxidized – Clean pads
• If damaged – Replace Battery Connector
• If can’t power on – Replace Battery
Connector
• If dirty or oxidized – Clean pads
” section
Reference Image
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Visually inspect the power key portion of
the Keypad for debris or damage
• If dirty – Clean
• If damaged – Replace Keypad
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Trouble Shooting Guide, Mechanical
Problem Area
Items to Check
Visually inspect the power contact
portion of the Dome Switch Foil
Repair Action
• If dirty – Clean
• If damaged – Replace Dome Switch Foil
Reference Image
If the issue has not been resolved!
• Replace the Keypad and the Dome
Switch Foil, if they have not already
been replaced
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Page 5
Trouble Shooting Guide, Mechanical
4 Network/Signal Problems
Problem Area
No Signal or Poor
Signal
Items to Check
Visually inspect SIM Holder
Visually inspect the
Visually inspect the Antenna Insert
Antenna Connector
Repair Action Reference Image
• If dirty or – Clean
• If damaged – Send to an electrical repair
location
• If dirty or oxidized – Clean
• If damaged – Send to an electrical repair
location
• If dirty or oxidized – Clean
• If damaged – Replace the Frame Cabinet
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Visually inspect the Antenna Flex
• If dirty or oxidized – Clean
• If damaged – Replace the Frame Cabinet
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Trouble Shooting Guide, Mechanical
5 Audio Problems
Problem Area
Microphone
Earphone
No sound or poor
quality sound
Items to Check
Before proceeding !
Visually inspect the Microphone pads
Visually inspect the Microphone Assy
Before proceeding !
Visually inspect the Front Cover Assy
Insert external
Visually inspect the Earphone Speaker
pads
Repair Action
• Perform a setting reset
• If dirty or oxidized – Clean
• If damaged, dirty or oxidized - Replace
Microphone Assy
• Perform a setting reset
• If clogged – Replace Front Cover Assy
• If dirty or oxidized – Clean
Reference Image
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Page 7
Trouble Shooting Guide, Mechanical
Problem Area
Earphone
No sound or poor
quality sound
Items to Check
Visually inspect the Earphone Speaker
Repair Action
• If damaged, dirty or oxidized - Replace
Earphone Speaker
Reference Image
(Cont.)
Check for the latest Software version
• Update to the latest Software
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Page 8
Trouble Shooting Guide, Mechanical
6 Alert Problems
Problem Area
Vibrator
Loudspeaker
Items to Check
Before proceeding !
Visually inspect the Vibrator pads
Visually inspect the Vibrator Assy
Before proceeding !
Visually inspect the Speaker Connector
Repair Action
• Perform a setting reset
• If dirty or oxidized – Clean
• If damaged, dirty or oxidized - Replace
Vibrator Assy
• Perform a setting reset
• If dirty or oxidized – Clean
• If damaged – Send to an electrical repair
location
Reference Image
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Visually inspect the Loudspeaker Assy
• If damaged, dirty or oxidized - Replace
Loudspeaker Assy
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Page 9
Trouble Shooting Guide, Mechanical
7 Key Problems
Problem Area
Keypad
A key on the
keypad is not
functioning or is
intermittent
Items to Check
Before proceeding !
Visually inspect the Dome Switch Foil
Visually inspect the Keypad
Repair Action
• Perform a setting reset
• If damaged, dirty or oxidized - Replace
the Dome Switch Foil
Make sure that the surface of the PCB is
cleaned before replacing.
• If damaged, dirty or oxidized - Replace
the keypad
Reference Image
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Page 10
8 Display Problems
Trouble Shooting Guide, Mechanical
Problem Area
Display
Items to Check
Check whether the phone keypad is
illuminates
Visually inspect whether the Flex Film is
properly connected
Visually inspect the
Visually inspect
into the LCD connector
LCD
Flex Film
the LCD connector
Repair Action
• If the Keypad are undetectable, refer to
the “Power Problems
• If improperly connected - Reestablish
proper connection
• If dirty or oxidized – Clean
• If damaged – Replace the LCD
• If dirty or oxidized – Clean
• If damaged – Replace the LCD
• If dirty or oxidized – Clean
• If damaged – Send to an electrical repair
location
” section
Reference Image
If issue has not been resolved !
Illumination
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Before proceeding !
• Replace the LCD
• Perform a setting reset
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Page 11
Problem Area
Items to Check
Visually inspect
9 SIM Problems
the 5 LEDS
Repair Action
• If dirty or oxidized– Clean
• If damaged or no light - Send to an
electrical repair location
Trouble Shooting Guide, Mechanical
Reference Image
Problem Area
Display
“Insert SIM “
Unit indicates the
incorrect SIM is
inserted
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Items to Check
Inspect SIM holder
Check whether the phone is locked to a
particular carrier and whether the correct
carrier’s SIM is being used
Repair Action
• If dirty or oxidized – Clean
• If damaged – Send to an electrical repair
location
• Use Correct Carrier SIM or test SIM
Reference Image
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Page 12
10 Charging/Capacity Problems
Trouble Shooting Guide, Mechanical
Problem Area
Battery can not
charge
Battery looses
charge quickly/
standby time seems
short
Items to Check
Visually inspect the contact pads of the
Battery
Visually the Battery Connector
Visually inspect the System Connector
NOTE - Some features noticeably reduce
the amount of standby time if they are
turned on. Some examples are the back
light (when turn on all the time), Blue
tooth, and infrared.
Repair Action
• If dirty or oxidized – Clean
• If damaged – Replace the Battery
• If dirty or oxidized – Clean
• If damaged – Replace the Battery
Connector
• If damaged, dirty or oxidized – Send to
an electrical repair location
• Replace the Battery
Reference Image
Perform the following repair action !
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Page 13
11 Data Communication Problems
Trouble Shooting Guide, Mechanical
Problem Area
Problem
transferring data
using a direct
connection
Items to Check
Visually inspect the System Connector
12 Software Problems
• If there are problems with the response of the keypad commands, or spelling errors in the menu, if they are not related to
mechanical damage, make a master reset and flash the phone with the latest software from EMMA III.
• Checking the software revision can be done in the Service info, see chapter Service functions in the software.
Choose: Service info / SW information.
The Software revision and date will be shown in the display.
Note: Do a SW upgrade before sending the unit to a higher level. Do not
If the failure still occurs, handle the unit according to the local directives.
Repair Action
• If damaged, dirty or oxidized – Send to
an electrical repair location
scrap a phone that hasn’t been upgraded.
Reference Image
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Page 14
13 Revision History
Rev. Date Changes / Comments
A 2006-03-07 First Release
Trouble Shooting Guide, Mechanical
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