C-COR Optiworx HW Series, Руководство по процедурам, Страница: 29 / 36

PN 060914-000
Revision C, October 2001
Page 2-15
© 2001, C-COR.net Corporation
DLP-503
Page 2 of 6
Module LED Table 503-1
Indications Fan/Power Supply Fault Diagnostic/Probable Cause
Normal Operation
Note: The illustration indicates the LEDs for the dual power
supply model (HW-PSFAN-2-110). The single power supply
models (HW-PSFAN-1-xxx) will only have the “-A” LEDs.
1. Verify that the green AC- and DC- LEDs are illuminated.
• If Yes , indicates normal power supply operation. Go to step 12 to verify cooling fan
operation.
• If No , continue to step 2, or proceed to LED pattern in this Table that corresponds
to actual transmitter LED fault pattern.
DC Output Failure DC Output(s) Not Within Specification
Note: Power for all the front panel LEDs is supplied by the
-48 VDC output from the primary power supply (DC-A). If
this supply fails, all the LED indicators will be
extinguished . Go to step 4.
2. Are the AC- LEDs green, and the DC- LEDs extinguished?
• If Yes , go to step 3.
• If No , continue to step 4.
3. Using the digital voltmeter (observing the marked polarity) check that a supply voltage
of -40 to -56.7 VDC is present at the output terminals on the rear panel of the Fan/
Power Supply assembly POWER SUPPLY A - 48V (and POWER SUPPLY B - 48V for
the dual supply version).
• If voltage
is not present , suspect defective 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
Integrated Fan/Power Supply assembly to C-COR.net.
Stop! You have completed this procedure.
• If the voltage is present , 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 connivent time. Go to step 12 to verify cooling fan operation.