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| 1.3 Troubleshooting Procedure | |
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| Table 1.3 System level and field troubleshooting | |
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| Check to be made | Recommended work |
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| DC power voltage | Confirm that the DC power voltage is within ±5% of the standard value. |
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| level | When measured at +5 V power pins P8 or P9 and GND pins |
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| or P12 of the power supply connector, the +5 DVC must be 4.75 to 5.25 |
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| VDC. |
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| Refer to Sections 3.3 and 5.1.4 of the MHV2160BT Disk Drive Product |
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| Manual. |
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| DC power ripple | Check that the maximum ripple at +5 VDC power is less than 100 mV |
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| noise | peak to peak and 200 mV peak to peak respectively. |
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| SATA Interface | Confirm that the SATA interface at the drive is properly connected with |
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| Connection | the host receptacle. |
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| (Including a |
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| Connection of |
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| Power Segment) |
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| System cable | Confirm that all cable connections throughout the system correctly |
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| connected. |
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| System diagnostic | To further isolate the failure, if it can be done, execute the system level |
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| test | diagnostic routine described in the host computer manual. |
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| Intermittent or | Check the AC voltage level at the power supply section and recheck the |
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| indefinite error | DC voltage level at the disk drive power supply connector. |
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| If the AC voltage level is abnormal, or if there is a lot of electrical noise, |
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| notify the user. |
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| If the DC voltage level is unstable, replace the power supply section. |
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| If possible, replace the disk drive. If the fault remains, the disk drive is |
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| not the case. For suggestions to isolate the failure further, refer to the |
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| hardware and software manuals provided with the system. |
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