Toshiba TDP- T80 Service Manual page 26

3-2.4 D. Audio Troubleshooting
Start
Can hear
sound ?
Yes
Sound is clear
without noise ?
Yes
End
3-2.5 E. Remote Control Troubleshooting
Start
Replace
the battery
Change Remote
Controller
Change IR
Receiver Board
Change M/B
Change
No
Keypad Board
No Change
Speaker
Yes
No
Yes
No
Yes
No
Yes
End
Change
No
Main Board
Change
No
Main Board
3-6
Change
No
Speaker