Trouble Shooting Guide, Mechanical
Trouble Shooting Guide, Mechanical
Applicable for W600i, W600c, W550i, and W550c
Contents
1 General....................................................................................................................................................................2
2 Network/Signal Problems .......................................................................................................................................2
3 Power Problems ......................................................................................................................................................4
4 Audio Problems ......................................................................................................................................................6
Microphone: ..................................................................................................................................................6
Receiver: .......................................................................................................................................................6
Rear Base Speaker: .......................................................................................................................................8
Side Base Speaker:........................................................................................................................................9
5 Key Problems........................................................................................................................................................10
Base Keypad: ..............................................................................................................................................10
Flip Keypad:................................................................................................................................................11
Gaming keys: ..............................................................................................................................................12
Music Player Key:.......................................................................................................................................12
Volume keys: ..............................................................................................................................................13
Camera key: ................................................................................................................................................13
6 SIM Problems .......................................................................................................................................................14
7 IR Problems ..........................................................................................................................................................15
8 Hands-Free Problems............................................................................................................................................15
9 Display Problems ..................................................................................................................................................16
10 Data Communication Problems ............................................................................................................................18
11 Illumination Problems...........................................................................................................................................18
Base Keypad: ..............................................................................................................................................18
Flip Keypad (Navigation Keypad):.............................................................................................................19
Gaming Key: ...............................................................................................................................................19
Display: .......................................................................................................................................................20
12 Alert Problems ......................................................................................................................................................22
Vibrator: ......................................................................................................................................................22
Rear Base Speaker: .....................................................................................................................................22
Side Base Speaker:......................................................................................................................................24
4/000 21-1/FEA 209 544/594 A
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
13 Charging/Capacity Problems ................................................................................................................................25
14 Camera Problems ..................................................................................................................................................26
15 Bluetooth Problems...............................................................................................................................................27
16 Revision History ...................................................................................................................................................28
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 unit, this document should be used in conjunction with the Test Instructions, Mechanical and
the Working Instructions, Mechanical.
NOTE! A unit should always be inspected for liquid damage and flashed with latest software before using the Mechanical Trouble Shooting
Guide. Refer the Mechanical Test Instructions for details regarding inspecting for liquid damage and upgrading software.
NOTE! If all of the repair actions listed in this document for addressing a problem have been preformed and a unit still is not working,
handle the unit according to your local company directives.
2 Network/Signal Problems
Problem Area Items to Check Repair Action Reference Image
No Signal or Poor Inspect SIM holder
" If dirty or oxidized Clean
Signal
" If damaged Send to an electrical
repair location
4/000 21-1/FEA 209 544/594 A 2(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
No Signal or Poor Inspect antenna-to-board connector
" If dirty or oxidized Clean the
Signal (Cont.)
antenna-to-board connector and
replace the antenna assembly
" If damaged Send to an electrical
repair location
Inspect external RF connector
" If dirty or oxidized Clean the
external RF connector
" If damaged Send to an electrical
repair location
If the issue has not been resolved
" Replace the antenna assembly if it
has not been replaced
4/000 21-1/FEA 209 544/594 A 3(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
3 Power Problems
Problem Area Items to Check Repair Action Reference Image
Unit will not Power With the phone in the open position,
" If illumination of the keypad is
On check whether the main keypad
detected, refer to the Display
illuminates 5 to 10 seconds after pressing
Problems section
the power key
Visually inspect contact pads on battery
" If dirty or oxidized Clean the pads
" If damaged Replace the battery
Visually inspect battery connector
" If dirty or oxidized Clean
" If damaged Send to an electrical
repair location
Visually inspect the power key for debris
" If dirty Clean
or damage
" If damaged Replace the power key
4/000 21-1/FEA 209 544/594 A 4(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Unit will not Power Visually inspect the power switch
" If dirty Clean the power switch
On (Cont.) portion of the display flex film
" If damaged Replace the display
flex film
Visually inspect the cable assemblies and
" If any of the four cable connections
their mating connectors on the display
are improperly connected -
flex film and the circuit board
Reestablish a proper connection
" If any portion of the four cable
connections are dirty - Replace both
cables and clean the mating portions
of the cable connections that are on
the display flex film and the circuit
board
" If a cable assembly is damaged
Replace both cable assemblies
" If a cable connector on the display
flex film is damaged Replace the
display flex film
" If a cable connector on the circuit
board is damaged Send to an
electrical repair location
If the issue has not been resolved
" Replace the power key, the display
flex film, and both cable assemblies,
if they have not already been
replaced
4/000 21-1/FEA 209 544/594 A 5(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
4 Audio Problems
Problem Area Items to Check Repair Action Reference Image
Microphone: Before proceeding
" Perform a setting reset
Visually inspect microphone assembly
" If the microphone is dirty Clean
" If the microphone grommet is
damaged or deformed - Replace the
microphone grommet
" If the microphone is damaged
Replace the display flex film
If the issue has not been resolved
" Replace the display flex film and the
microphone grommet, if they have
not been replaced
Receiver: Before proceeding
" Perform a setting reset
Visually inspect the receiver s external
" If clogged Clean the port or
No sound or poor
port
replace the display cover as
quality sound
necessary
Visually inspect the dust cloth that is
" If clogged Replace the receiver
adhered to the receiver
4/000 21-1/FEA 209 544/594 A 6(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Receiver: Visually inspect the receiver s dust
" If clogged Replace the dust cloth
cloth that is adhered to the inner flip
No sound or poor
cover
quality sound (Cont.)
Visually inspect the receiver s contact
" If dirty - Clean the pads
pads on the display flex film
" If damaged Replace the display
flex film
Visually inspect the receiver
" If dirty or damaged - Replace
If the issue has not been resolved
" Replace the receiver, if it has not
been replaced
4/000 21-1/FEA 209 544/594 A 7(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Rear Base Speaker: Before proceeding
" Perform a setting reset
No sound or poor
Visually inspect whether the rear base
" If clogged clean the speaker port
quality sound
speaker s external port is clogged
opening in outer base cover
Visually inspect the rear base speaker
" If dirty or damaged - Replace the
assembly s dust cloth
dust cloth
Visually inspect the rear base speaker
" If dirty or damaged Replace the
assembly (including its circuit board
rear base speaker assembly
connection pads)
4/000 21-1/FEA 209 544/594 A 8(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Rear Base Speaker: Visually inspect the rear base speaker
" If dirty or oxidized Clean both
connection springs on the circuit board
springs and their corresponding
No sound or poor
connection pads
quality sound (Cont.)
" If damaged Send to an electrical
repair location
If the issue has not been resolved
" Replace the rear base speaker
assembly, if it has not already been
replaced
Side Base Speaker: Before proceeding
" Perform a setting reset
Visually inspect whether the side base
" If clogged clean its speaker port
No sound or poor
speaker s external port is clogged
opening in outer base cover
quality sound
Visually inspect side base speaker
" If dirty Replace the side base
(including the wire connection
speaker and clean the connector on
extending from it and its dust cloth)
the circuit board
" If damaged - Replace the side base
speaker
4/000 21-1/FEA 209 544/594 A 9(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Side Base Speaker: Visually inspect the side base speaker
" If dirty Clean the connector on the
connector on the circuit board
circuit board and replace the side
No sound or poor
base speaker
quality sound (Cont.)
" If damaged Send to an electrical
repair location
If the issue has not been resolved
" Replace the side base speaker, if it
has not already been replaced
5 Key Problems
Problem Area Items to Check Repair Action Reference Image
Base Keypad: Visually inspect for debris between
" If dirty Clean both parts
and/or damage to the keypad and the
A key on the keypad
" If damaged - Replace the keypad
dome foil.
is not functioning or
and/or the dome foil as necessary
is intermittent
If the issue has not been resolved
" Replace the dome foil, if it has not
already been replaced
If the issue still has not been resolved
" Replace the keypad switch
assembly
Base Keypad: Visually inspect the keypad switch
" If improperly connected
assembly s board connection
Reestablish a proper connection
Entire keypad is not
" If the flex film portion of the
functioning or is
connector is damaged Replace
intermittent
the keypad switch assembly
" If the circuit board portion of the
connection is damaged Send to
an electrical repair location
4/000 21-1/FEA 209 544/594 A 10(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Flip Keypad: Visually inspect for debris between
" If dirty Clean both parts
and/or damage to the flip keypad and its
One of the keys
" If damaged - Replace the flip
dome foil.
around the navigation
keypad and/or the dome foil as
key or a portion of
necessary
the navigation key is
not functioning or is
intermittent
If the issue has not been resolved
" Replace the flip dome foil, if it has
not already been replaced
If the issue still has not been resolved
" Replace the display flex film
Flip Keypad: Visually inspect the cable assemblies
" If any of the four cable connections
and their mating connectors on the
are improperly connected -
The navigation key
display flex film and the circuit board
Reestablish a proper connection
and all of the keys
around the navigation
" If any portion of the four cable
key are not
connections are dirty - Replace
functioning
both cables and clean the mating
portions of the cable connections
that are on the display flex film and
the circuit board
" If a cable assembly is damaged
Replace both cable assemblies
" If a cable connector on the display
flex film is damaged Replace the
display flex film
" If a cable connector on the circuit
board is damaged Send to an
electrical repair location
4/000 21-1/FEA 209 544/594 A 11(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Gaming keys: Visually inspect for debris between
" If dirty Clean both the key and
and/or damage to the gaming key in
its switch
question and its switch.
" If the key is damaged Replace it
" If the switch is damaged Replace
the display flex film
Music Player Key: Visually inspect for debris between
" If dirty Clean both the key and
and/or damage to the music player key
its switch
and its switch.
" If the key is damaged Replace it
" If the switch is damaged Replace
the display flex film
4/000 21-1/FEA 209 544/594 A 12(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Volume keys: Visually inspect for debris between
" If dirty Clean both the volume
and/or damage to the volume key and the
key and its switches
volume key switches.
" If the volume key is damaged
Replace it
" If one or both of the volume key s
switches are damaged - Replace
the display flex film
Camera key: Visually inspect for debris between
" If dirty - Clean both the key and its
and/or damage to the camera key and its
switch
switch.
" If the key is damaged Replace it
" If the switch is damaged Replace
the display flex film
4/000 21-1/FEA 209 544/594 A 13(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Keypad Lock Key: Check the positioning and the condition Reposition or replace the keypad lock
of the keypad lock key key as necessary
Inspect the keypad lock key s switch If dirty - Clean
If damaged - Replace the display flex
film
6 SIM Problems
Problem Area Items to Check Repair Action Reference Image
SIM undetected Inspect SIM holder
" If dirty or oxidized Clean
" If damaged Send to an electrical
repair location
Unit indicates the Check whether the phone is locked to a
" Use the correct carrier s SIM or a
incorrect SIM is particular carrier and whether the
test SIM
inserted correct carrier s SIM is being used
4/000 21-1/FEA 209 544/594 A 14(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
7 IR Problems
Problem Area Items to Check Repair Action Reference Image
Will not connect with Inspect the IR window for dirt,
" If dirty Clean
a functional IR scratches, and damage
" If damaged Replace the outer base
device
cover
Inspect the IR transceiver
" If dirty Clean
" If damaged - Send to an electrical
repair location
8 Hands-Free Problems
Problem Area Items to Check Repair Action Reference Image
Hands-free not Visually inspect the system connector
" If dirty or oxidized Replace the
working
system connector
" If damaged Replace the system
connector
4/000 21-1/FEA 209 544/594 A 15(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
9 Display Problems
Problem Area Items to Check Repair Action Reference Image
If the display is not With the phone in the open position,
" If illumination of the keypad is not
functioning check whether the base keypad
detected, refer to the Power
illuminates 5 to 10 seconds after
Problems section
pressing the power key
Visually inspect the cable assemblies
" If any of the four cable connections
and their mating connectors on the
are improperly connected -
display flex film and the circuit board
Reestablish a proper connection
" If any portion of the four cable
connections are dirty - Replace both
cables and clean the mating portions
of the cable connections that are on
the display flex film and the circuit
board
" If a cable assembly is damaged
Replace both cable assemblies
" If a cable connector on the display
flex film is damaged Replace the
display flex film
" If a cable connector on the circuit
board is damaged Send to an
electrical repair location
4/000 21-1/FEA 209 544/594 A 16(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
If the display is not Visually inspect the LCD to display
" If improperly connected -
functioning (Cont.) flex film connection
Reestablish a proper connection
" If dirty or oxidized Clean ( If it is
determined that cleaning is needed,
clean all pads and contacts that are
part of this connection)
" If pads of the LCD module s flex
film are damaged - replace LCD
module
" If the LCD connector on the display
flex film is damaged - Replace the
display flex film
If issue has not been resolved
" Replace any of the following
components that have not been
replaced - LCD module, display flex
assembly, cable assemblies
4/000 21-1/FEA 209 544/594 A 17(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
10 Data Communication Problems
Problem Area Items to Check Repair Action Reference Image
Problem transferring Visually inspect the system connector
" If dirty or oxidized Replace the
data using a direct
system connector
connection
" If damaged Replace the system
connector
11 Illumination Problems
Problem Area Items to Check Repair Action Reference Image
Base Keypad: Before proceeding
" Perform a setting reset
The entire keypad is
Visually inspect the keypad switch
" If improperly connected -
not illuminating
assembly s board connection
Reestablish a proper connection
" If the flex film portion of the
connector is damaged Replace the
keypad switch assembly
" If the circuit board portion of the
connection is damaged Send to an
electrical repair location
If the issue has not been resolved
" Replace the keypad switch assembly,
if it has not been replaced
Base Keypad: Perform the following action
" Replace the keypad switch assembly
A portion of the
keypad is not
illuminating
4/000 21-1/FEA 209 544/594 A 18(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Flip Keypad Before proceeding
" Perform a setting reset
(Navigation
Visually inspect the cable assemblies
" If any of the four cable connections
Keypad):
and their mating connectors on the
are improperly connected -
The entire keypad is
display flex film and the circuit board
Reestablish a proper connection
not illuminating
" If any portion of the four cable
connections are dirty - Replace both
cables and clean the mating portions
of the cable connections that are on
the display flex film and the circuit
board
" If a cable assembly is damaged
Replace both cable assemblies
" If a cable connector on the display
flex film is damaged Replace the
display flex film
" If a cable connector on the circuit
board is damaged Send to an
electrical repair location
If the issue has not been resolved
" Replace the display flex film, if it
has not been replaced
Flip Keypad: Perform the following action
" Replace the display flex film
assembly
A portion of the
keypad is not
illuminating
Gaming Key: Perform the following action
" Replace the display flex film
assembly
A gaming key is not
illuminating
4/000 21-1/FEA 209 544/594 A 19(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Display: Before proceeding
" Perform a setting reset
The display is not
Visually inspect the LCD to display flex
" If improperly connected -
illuminating
film connection
Reestablish a proper connection
" If dirty or oxidized Clean ( If it
is determined that cleaning is
needed, clean all pads and contacts
that are part of this connection)
" If any pads of the LCD module s
flex film are damaged - replace
LCD module
" If the LCD connector on the
display flex film is damaged -
Replace the display flex film
assembly
4/000 21-1/FEA 209 544/594 A 20(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
The display is not Visually inspect the cable assemblies and
" If any of the four cable connections
illuminating (Cont.) their mating connectors on the display
are improperly connected -
flex film and the circuit board
Reestablish a proper connection
" If any portion of the four cable
connections are dirty - Replace
both cables and clean the mating
portions of the cable connections
that are on the display flex film and
the circuit board
" If a cable assembly is damaged
Replace both cable assemblies
" If a cable connector on the display
flex film is damaged Replace the
display flex film assembly
" If a cable connector on the circuit
board is damaged Send to an
electrical repair location
If the issue has not been resolved
" Replace the LCD assembly, if it
has not been replaced
If the issue still has not been resolved
" Replace the display flex film
assembly and both cable
assemblies, if they have not been
replaced
4/000 21-1/FEA 209 544/594 A 21(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
12 Alert Problems
Problem Area Items to Check Repair Action Reference Image
Vibrator: Before proceeding
" Perform a setting reset
Visually inspect the vibrator contact
" If dirty or oxidized Clean
pads on the circuit board
" If damaged Handle according to
local directives
Visually inspect the vibrator
" If dirty or oxidized Replace
vibrator
" If damaged - Replace vibrator
Rear Base Speaker: Before proceeding
" Perform a setting reset
Visually inspect whether the rear base
" If clogged Clean its speaker port
No sound or poor
speaker s external port is clogged
opening in the outer base cover
quality sound
4/000 21-1/FEA 209 544/594 A 22(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Rear Base Speaker: Visually inspect the rear base speaker
" If dirty or damaged Replace the
assembly s dust cloth
dust cloth
No sound or poor
quality sound (Cont.)
Visually inspect the rear base speaker
" If dirty or damaged - Replace the
assembly (including its connection
rear base speaker assembly
pads to the circuit board)
Visually inspect the rear base speaker
" If dirty or oxidized Clean both
connection springs on the circuit board
springs and replace the rear base
speaker assembly
" If damaged Send to an electrical
repair location
4/000 21-1/FEA 209 544/594 A 23(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
Problem Area Items to Check Repair Action Reference Image
Rear Base Speaker: If the issue has not been resolved
" Replace the rear base speaker
assembly, if it has not already been
No sound or poor
replaced
quality sound (Cont.)
Side Base Speaker: Before proceeding
" Perform a setting reset
Visually inspect whether the side base
" If clogged Clean its speaker port
No sound or poor
speaker s external port is clogged
opening in outer base cover
quality sound
Visually inspect side base speaker
" If dirty Replace the side base
(including the wire connection
speaker and clean the connector on
extending from it and its dust cloth)
the circuit board
" If damaged - Replace side base
speaker
Visually inspect the side base speaker
" If dirty Clean the connector on the
connector on the circuit board
circuit board and replace the side
base speaker
" If damaged Send to an electrical
repair location
If the issue has not been resolved
" Replace the side base speaker, if it
has not already been replaced
4/000 21-1/FEA 209 544/594 A 24(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
13 Charging/Capacity Problems
Problem Area Items to Check Repair Action Reference Image
Visually inspect the contact pads of the
" If dirty or oxidized Clean
Battery will not
battery
charge
" If damaged Replace the battery
Visually inspect the of the connector
" If dirty or oxidized Clean
that connects the battery to the circuit
" If damaged Send to an electrical
board
repair location
Visually inspect the system connector
" If dirty or oxidized Replace the
system connector
" If damaged Replace the system
connector
4/000 21-1/FEA 209 544/594 A 25(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
14 Camera Problems
Problem Area Items to Check Repair Action Reference Image
Lines or marks in Visually inspect the camera lens
" If dirty Clean the camera lens
picture
" If scratched or damaged Replace
the camera module
If the issue has not been resolved
" Replace the camera module, if it
has not been replaced
Will not capture an Visually inspect for debris between
" If dirty - Clean both the key and its
image and/or damage to the camera key and its
switch
switch.
" If the key is damaged Replace it
" If the switch is damaged Replace
the display flex film
If the issue has not been resolved
" Replace the display flex film
assembly, if it has not already been
replaced
If the issue still has not been resolved
" Replace the camera module
4/000 21-1/FEA 209 544/594 A 26(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
15 Bluetooth Problems
Problem Area Items to check Repair Action
Will not connect with Check the Bluetooth antenna contact
" If dirty or oxidized Clean
a functional pads on the circuit board
" If damaged, handle according to
Bluetooth device
your local company directives
Check the Bluetooth antenna
" If dirty Clean
" If damaged - Replace
4/000 21-1/FEA 209 544/594 A 27(28)
Company Internal © Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, Mechanical
16 Revision History
Rev Date Changes / Comments
A 2005-Sept 13 Initial Release
4/000 21-1/FEA 209 544/594 A 28(28)
Company Internal © Sony Ericsson Mobile Communications AB
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