Apple macintosh plus Manuales De Servicio

 

 Troubleshooting

Symptom Charts/Miscellaneous - 8

 

When turned on, the 

Macintosh Plus 

continuously beeps 

and tries to power up

1 Perform voltage adjustment. Refer to Adjustments.

2 Disconnect internal disk drive. If this eliminates problem, 

replace drive. 

3 Replace logic board. Retain customer’s SIMMs.

4 Replace power supply board, logic board, and internal drive; 

then turn on Macintosh. Note: Replacing only power supply 

board may damage new power supply board.

Clicking or chirping 

sound

1 Connect logic board cable.

2 Perform voltage adjustment. Refer to Adjustments.

3 Replace power supply board.

4 Replace logic board. Retain customer’s SIMMs.