DC Power Harnesses
Introduction
This section describes procedures to troubleshoot the controller enclosure DC Power
Harness. See
Figure
88. For troubleshooting procedures, refer to the
"Master
Troubleshooting Table" on page
275.
DC Power Supply Harnesses
Figure 88
DC Power Harnesses
Servicing Notes
An intermittent or complete loss of power to the controller modules, Battery Backup Unit,
or controller enclosure fan module may indicate either a defective power harness or power
interface board. If replacing the harnesses does not resolve the problem, you may need to
replace the entire power supply housing, which includes the power interface board.
Controller Enclosure Troubleshooting
272
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