Apple macintosh ii.iix.iifx Service Manual

 

 Troubleshooting

Symptom Charts/Peripherals

 

 (Continued)

 

 - 16

 

No response to any 

key on keyboard

1 Check keyboard connection to ADB port.

2 Replace keyboard cable.

3 Replace keyboard.

4 Replace logic board. Retain customer’s SIMMs.

Double-click doesn’t 

open application, 

disk, or server

1 Remove multiple system files on hard drive.

2Clear parameter RAM. System 7: Hold down <Command> 

<Option> <P> <R> during startup but before “Welcome to 

Macintosh” appears. System 6 and earlier: Hold down 

<Command> <Option> <Shift> keys and select Control Panel 

from Apple menu.

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.