Sony Ericsson K750 Troubleshooting Manual, Mechanical page 14

Problem Area Items to Check
Visually inspect the speaker pins
If the issue has not been resolved !
If the issue has not been resolved !
Before proceeding !
Poly.-Speaker:
No sound or poor
quality sound
Visually inspect speaker's external port
4/000 21-1/FEA 209 544/94 C
©
Sony Ericsson Mobile Communications AB
Repair Action
•
If damaged, dirty or oxidized – Replace
speaker box.
•
Replace speaker box.
•
Handle the unit according to local
directives.
•
Perform a flash upgrade and a setting
reset.
•
If clogged – Clean or replace antenna
cover.
Trouble Shooting Guide, Mechanical
Reference Image
14(33)