Lenovo D1212, Hardware Installation And Maintenance Manual

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Chapter 5. Troubleshooting and Problem Solving
The enclosure system includes a Storage Enclosure Processor (SEP) and associated monitoring and control
logic to enable it to diagnose problems within the enclosure’s power, cooling and drive systems.
This chapter contains the following items:
• “Initial Start-Up Problems” on page 53
• “LEDs” on page 53
• “Temperature Sensors” on page 62
• “Troubleshooting (2U Enclosures)” on page 62
• “Troubleshooting (5U Enclosures)” on page 64
• “Dealing with Hardware Faults” on page 66
• “Continuous Operation During Replacement” on page 66
• “Firmware Updates” on page 66
• “DDIC Pop-up Troubleshooting” on page 67
• “Field Replaceable Units (2U Enclosures)” on page 72
• “Field Replaceable Units (5U Enclosures)” on page 74
Initial Start-Up Problems
Faulty Cords
First check that you have wired up the enclosure system correctly. Contact Lenovo service or representative
for replacements if:
• Cords are missing or damaged.
• Plugs are incorrect.
• Cords are too short.
Computer Does Not Recognize Enclosure System
1. Check that the interface cables from the enclosure to the host computer are fitted correctly.
2. Check that the LEDs on all installed drive carrier modules are on (green).
3. Check that drive assemblies modules have been correctly installed.
4. Check any visible SAS indicators (JBOD and/or server adapters).
5. Check server adapter setup utilities for SAS target visibility.
6. Verify that the operating system driver has been installed correctly.
LEDs
LED colors are used consistently throughout the enclosure and its components for indicating status:
• Green - good or positive indication.
• Flashing green/amber - non-critical condition.
• Amber - critical fault.
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