Apple 24-inch mid 2007 Manuale Utente

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iMac (24-inch Mid 2007) Take Apart — Symptom Charts 
237
Mouse
The scroll bar on my mouse does not work in all directions.
See Knowledge Base article 
, for instructions on how to clean the scroll ball.
My mouse doesn’t work at all.
Turn over the mouse and check the if the red LED on the underside of the mouse. Is the LED 
1. 
lit? 
 
Yes: The mouse has power. Try using the mouse on another surface. Non-reflective, opaque 
surfaces without repetitive patterns work best. The surface should be clean, but not shiny. 
Optical mice won’t work on glass, mirrored surfaces, glossy materials or mouse pads with 
pictures. 
 
No: There is no power to the mouse. Try plugging the mouse into one of the USB ports 
on the machine. If the mouse won’t power on from any USB port, try it on a known good 
machine. If the mouse fails to power on with known good machine, replace the mouse. If the 
mouse will power on with a known good machine, replace the main logic board.
If the underside LED is lit and the surface is good, and the mouse still does not track, try 
2. 
plugging the mouse into another USB port on the machine. Does the mouse track now? 
 
Yes: Issue resolved. Try the other USB ports on the system to make sure you don’t have a bad 
port. 
No: Try using a known good mouse. If a known good mouse resolves the issue, replace the 
mouse. If a known good mouse does not resolve the issue, replace the main logic board.
My mouse works intermittently (the cursor freezes randomly) or is slow to 
respond.
Try using the mouse on another surface. Non-reflective, opaque surfaces without repetitive 
1. 
patterns work best. The surface should be clean, but not shiny. Optical mice won’t work on 
glass, mirrored surfaces, glossy materials or mouse pads with pictures. Does the mouse track 
correctly on a proper surface?
 
Yes: Issue resolved. 
No: Check the Mouse Tracking setting in the Mouse control panel. 
Boot to another volume (like the System Install Disc). Does the mouse track properly now? 
2. 
Yes: Reinstall System Software 
No: Try a using a known good mouse. If a known good mouse resolves the issue, replace the 
mouse. If the issue persists with a known good mouse, replace the main logic board.
My Apple wireless mouse is slow or not tracking correctly.
Refer to Knowledge Base documen
- Apple Wireless Mouse is slow or not tracking 
smoothly.