Specifications

12 - Power Mac G5 Troubleshooting

Symptom Charts

No power (LED on/off, no fans, no boot tone, no video)

1. Check power supply cables

2. Check logic board power rails

3. Check processor connector

4. Check logic board tape for dual conﬁg

5. Replace power supply

6. Replace processor

7. Replace logic board

No boot (LED on/off, fans spin, no boot tone, no video)

1. Replace memory

2. Replace logic board

Memory (blinking LED, fans spin, no boot tone, no video)

1. Check memory conﬁg and replace DIMMs

2. Replace logic board

No boot tone (LED on, fans spin, no boot tone, video) or

No video (LED on, fans spin, boot tone, no video)

1. Reseat video card

2. Replace video card

3. Replace front panel board cable

4. Replace speaker

5. Replace front panel board

6. Replace logic board

Duct door sensor

1. Reseat interlock sensor board cable

2. Replace interlock sensor board

3. Replace logic board

4. Replace enclosure