Sony Ericsson Z710, W710 Trouble Shooting Guide
Trouble Shooting Guide, Mechanical
Trouble Shooting Guide, Mechanical
Applicable for W710 and Z710
Contents
1 General ................................................................................................................................. 2
2 Power Problems.................................................................................................................... 3
3 Network/Signal Problems......................................................................................................4
4 Audio Problems.....................................................................................................................5
Microphone: ................................................................................................................... 5
Receiver:........................................................................................................................ 5
Rear Speaker:................................................................................................................ 6
5 Key Problems........................................................................................................................ 8
Keypad:.......................................................................................................................... 8
Navigation Key:.............................................................................................................. 8
Volume key: ................................................................................................................... 8
Camera key ...................................................................................................................8
Phone Lock Key............................................................................................................. 9
Play/Stop Key ................................................................................................................ 9
Menu/Toggle Key........................................................................................................... 9
“Next” Key....................................................................................................................10
“Previous” Key ............................................................................................................. 10
6 Display Problems ................................................................................................................11
7 Illumination Problems..........................................................................................................14
Keypad Illumination: The entire keypad will not illuminate .........................................14
Keypad Illumination: A portion of the keypad does not illuminate .............................14
Navigation Key Illumination: ........................................................................................14
Display Illumination:..................................................................................................... 15
8 Alert Problems..................................................................................................................... 17
Vibrator: .......................................................................................................................17
Rear speaker: .............................................................................................................. 18
9 Charging/Capacity Problems ..............................................................................................19
10 Camera Problems ............................................................................................................... 20
11 IR Problems ........................................................................................................................ 21
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Trouble Shooting Guide, Mechanical
12 SIM Problems...................................................................................................................... 21
13 Direct Connection Communication Problems .....................................................................22
14 Bluetooth Problems............................................................................................................. 22
15 Hands-Free Problems ......................................................................................................... 23
16 Revision History .................................................................................................................. 23
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 to 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 performed and a unit still
is not working, handle the unit according to your local company directives
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Trouble Shooting Guide, Mechanical
2 Power Problems
Problem Area
Unit will not
Power On
Items to Inspect
Check whether the phone vibrates
and the keypad illuminates when you
press the power key
Inspect battery connector
If the issue has not been resolved!
If the issue is still not resolved!
Repair Action
If activation of the vibrator and keypad
are detected, refer to the “Display
Problems” section
• If dirty or oxidized – Clean
• If damaged – Send to an electrical
repair location
• Replace the keypad and the dome
array
• Escalate to an electrical repair level
Inspection Reference
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Trouble Shooting Guide, Mechanical
3 Network/Signal Problems
Problem Area
No Signal or Poor
Signal
Items to Inspect
Inspect SIM holder
Inspect antenna-to-board spring
connectors
If the issue has not been resolved !
Repair Action Inspection Reference
• If dirty or oxidized – Clean
• If damaged – Send to an electrical
repair location
• If dirty or oxidized – Clean the
antenna-to-board spring connectors
and replace the rear speaker box
• If damaged – Send to an electrical
repair location
• Replace the rear speaker box
If the issue is still not resolved!
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• Escalate to an electrical repair level
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Trouble Shooting Guide, Mechanical
4 Audio Problems
Problem Area
Microphone:
Receiver:
No sound or poor
quality sound
Items to Inspect
Before proceeding !
Inspect the microphone’s external
port
If the issue is still not resolved!
Before proceeding !
Inspect the receiver’s external ports
Inspect the receiver’s contact pads
on the flip flex assembly
Repair Action
• Perform a setting reset
• If clogged – Replace the keypad,
dome foil, and the microphone cloth.
Also clean the microphone
• Escalate to an electrical repair level
• Perform a setting reset
• If clogged – Replace the inner flip
cover, the receiver tape, and the
receiver
• If dirty - Clean
• If damaged – Replace the flip flex
assembly
Inspection Reference
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Trouble Shooting Guide, Mechanical
Problem Area
(Continuation)
Receiver:
Items to Inspect
If the issue has not been resolved !
• Replace receiver, if it has not been
replaced
Repair Action
Inspection Reference
No sound or poor
quality sound
Rear Speaker:
No sound or poor
quality sound
If the issue is still not resolved !
If the issue is still not resolved!
Before proceeding !
Inspect whether the rear speaker’s
external port is clogged
Inspect the rear speaker cloth
• Replace the flip flex assembly, if it
has not been replaced
• Escalate to an electrical repair level
• Perform a setting reset
• If clogged – clean/replace the battery
door as necessary
• If dirty or damaged - Replace the
rear speaker cloth
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Trouble Shooting Guide, Mechanical
Problem Area
(Continuation)
Rear Speaker:
No sound or poor
quality sound
Items to Inspect
Inspect the rear speaker connection
springs on the circuit board
• If dirty or oxidized – Clean both
springs and replace the rear speaker
assembly
• If damaged – Send to an electrical
repair location
Repair Action
Inspection Reference
If the issue has not been resolved !
If the issue is still not resolved!
• Replace rear speaker assembly, if it
has not already been replaced
• Escalate to an electrical repair level
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