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| Troubleshooting |
| Symptom Charts/Peripherals - 20 | |
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| 1 | Remove duplicate system folders. |
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Double | |||||
open application, | 2 | Clear parameter RAM. Hold down <Command> <Option> <P> | |||
disk, or server |
| <R> during startup but before "Welcome to Macintosh" | |||
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| 3 | appears. | |
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| If mouse was connected to keyboard, connect mouse to | ||
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| computer ADB port instead. If mouse works, replace | |
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| 4 | keyboard. | |
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| If mouse does not work in any ADB port on computer, replace | ||
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| 5 | mouse. | |
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| Replace logic board. Retain customer's DIMMs. | ||
No response to any | 1 | Check keyboard connection to ADB port. | |||
key on keyboard | 2 | Replace keyboard cable. | |||
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| 3 | Replace keyboard. | |
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| 4 | Replace logic board. Retain customer's DIMMs. | |
