C-COR Optiworx HW Series, Руководство по процедурам, Страница: 33 / 36

PN 060914-000
Revision C, October 2001
Page 2-19
© 2001, C-COR.net Corporation
Warning: The internal AC/DC power modules contained in the Fan/Power Supply
assembly have overvoltage and thermal protection circuitry. If it is suspected that the
assembly has overheated, power to the assembly must be removed, and the unit allowed
to cool down before it can be turned on again. Turning the Fan/Power Supply assembly
off will remove power to the equipment shelf, thereby eliminating any communications to
and from the shelf. This procedure should only be performed on new installs (prior to
going on-line) or after an alternate source of power has been supplied to an active shelf.
• If a single supply version (DC-A only), and voltage is not present , suspect defective
primary power supply “A”. Set the power rocker switch to the
ì O î
(off) position,
disconnect AC power cord from the AC outlet and fan assembly, disconnect wiring to
the shelf, remove and return the suspected faulty Integrated Fan/Power Supply
assembly to C-COR.net.
Stop! You have completed this procedure.
• If a dual supply version, and voltage is not present on DC-A but is present on DC-B,
suspect defective power supply A. Although the assembly can still be used to power
the HWX Equipment Shelf, the redundancy feature no longer exists. The unit should
be replaced and returned to C-COR.net for repair at the earliest convenient time. Continue
to step 12 to verify cooling fan operation.
• If the voltage is present on DC-A and DC-B (dual supply version), suspect defective
LED or alarm circuitry. Although this will not affect functionality of the assembly, the
unit should be replaced and returned to C-COR.net for repair at the earliest convenient time.
Continue to step 12 to verify cooling fan operation.
Air Flow
12. Verify that the three fan assemblies on the top of the Integrated Fan/Power Supply
assembly are functioning and directing air flow as intended.
• If
Yes . Stop! You have completed this procedure.
• If No , suspect defective Integrated Fan/Power Supply. Set the rocker power switch to
the
ì O î
(off) position, disconnect AC power plug from the AC outlet and fan assembly,
disconnect wiring to the shelf, remove and return the suspected faulty Fan/Power Supply
assembly C-COR.net.
Stop! You have completed this procedure.
DLP-503
Page 6 of 6
Module LED Table 503-1
(continued)
Indications Fan/Power Supply Fault Diagnostic/Probable Cause