Deep Dive
Check | Result | Action | Code |
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1. Run Apple Hardware Test or | Yes | Suspect possible fan or |
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Apple Server Diagnostics. Was |
| sensor error. Check fan |
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an error generated? |
| cable connection to the |
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| interconnect board. |
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| No | Go to step 2. |
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2. Does noise sound like fan | Yes | Reset SMC by disconnecting |
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running faster than expected? |
| power cord for ~15 seconds |
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| then retest. If issue continues |
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| go to step 3. |
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| No | Go to step 5. |
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3. Does the noise change when | Yes | Suspect issue with optical |
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the optical drive is being |
| drive or the media being |
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accessed or media is inserted |
| used. Jump to ‘Optical Drive |
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or ejected? |
| Noisy’ symptom flow for |
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| additional information. |
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| No | Go to step 4. |
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4. Mute the system volume. Verify | Yes | Go to step 5. |
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whether the issue still occurs. |
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| No | Suspect issue with speaker |
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| or audio circuitry. Jump |
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| to ‘Distorted Sound |
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| From Internal Speakers’ |
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| symptom flow for additional |
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| information. |
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5. Remove fan and rotate the | Yes | Go to step 6. |
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blades. Verify that fan blades |
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spin smoothly without |
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No | Replace fan. | P04 | ||
interference from fan housing. |
Mac mini (Late 2009) Symptom Charts — Startup and Power 32 |
