Apple LC520 Spécifications télécharger pdf (Page 32)

Troubleshooting Symptom Charts/Peripheral

(Continued)

- 14

Peripheral

(Continued)

Cannot double-click

to open application,

disk, or server

1 Remove extra system files on hard drive.

2 Clear parameter RAM. Hold down <Command> <Option> <P>

<R> keys during system startup but before “Welcome to

Macintosh” appears.

3 If mouse was connected to keyboard, connect it to rear ADB

port instead. If mouse works, replace keyboard.

4 If mouse does not work in any ADB port, replace mouse.

5 Replace logic board. Retain customer’s SIMMs.

No response to any

key on keyboard

1 Check keyboard connection to ADB port.

2 Replace keyboard cable.

3 Replace keyboard.

4 Reset PRAM.

5 Replace logic board. Retain customer’s SIMMs.

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Apple LC520 Spécifications Page 32