107Installation and Service Guide: Color Controller E-85
Troubleshooting
Each CPU is:
• Present
• Installed in the correct socket
• The correct speed (CPU speeds must match)
• Well-seated
• Not visibly damaged
The CPU cooling unit is:
• Ready for efficient thermal transfer
• Well-aligned
CPU and CPU cooling assembly, page 69.
Fan is:
• Properly positioned (not backwards)
• Installed in the correct connector
• Not visibly damaged (fan, fan cable, cable connector,
and motherboard connector)
Fan, page 72.
The power supply is:
• Present
• Correctly installed
• Not visibly damaged
Cable connectors are:
• Firmly connected
• Not visibly damaged
• Installed in the correct devices
Power supply, page 74.
The hard disk drives are:
• Present
• Correctly installed
• Not visibly damaged
Hard disk drive data cables are:
• Present
• Firmly connected to the correct SATA connectors on the motherboard (see
page 80)
• Not visibly damaged
Hard disk drive power cables are:
• Present
• Firmly connected to the SATA power connectors on the hard disk drives.
• Not visibly damaged
Hard disk drive (3), page 76.
.
Conditions to verify Part and additional page references
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