Apple 550C Uživatelský manuál stáhnout pdf (Strana 29)

Troubleshooting Symptom Charts/Startup - 4

Symptom Charts

Startup

RAM failure occurs

(eight-tone error

chord sounds after

startup chord)

1 Reseat RAM expansion card and check connection.

2 Replace RAM expansion card.

3 Replace daughterboard.

4 Replace motherboard.

Hardware failure

occurs (four-tone

error chord sounds

after startup chord)

1 Disconnect hard drive cable and restart computer. If startup

sequence is normal, reconnect cable and retest.

2 Replace hard drive.

3 Disconnect floppy drive cable and restart computer. If

startup sequence is normal, reconnect cable and retest.

4 Replace floppy drive.

5 Replace motherboard.

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Apple 550C Uživatelský manuál Strana 29