Vertiv
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+24 VDC Power System User Manual (Section 6013)
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Rev. G
156
Rectifier Shelf Interface Circuit Card Replacement
A Rectifier Shelf Interface circuit card is installed in each bay. To replace the circuit card perform the following
procedure.
as this procedure is performed.
CAUTION!
When performing any step in this procedure that requires removal or installation of
hardware, use caution to ensure no hardware is dropped and left inside the cabinet; otherwise service
interruption or equipment damage may occur.
WARNING!
Circuit cards used in this equipment contain static-sensitive devices. Read the Static
Warning page at the front of this document before performing the following procedure.
NOTE!
When performing any step in this procedure that requires removal of existing hardware, retain all
hardware for use in subsequent steps.
Procedure
1.
Observe the admonishments presented at the beginning of this section, and those encountered in this
procedure.
2.
Performing this procedure may activate external alarms. Do one of the following. If possible, disable
these alarms. If these alarms cannot be easily disabled, notify the appropriate personnel to disregard
any future alarms associated with this system.
3.
Open the Distribution Cabinet's front door by turning and holding the captive fastener in the
counterclockwise position.
DANGER!
Performing the next steps exposes service personnel to battery potential. Exercise extreme
caution not to inadvertently contact or have any tool inadvertently contact any energized electrical
termination.
4.
Remove the clear plastic panel that covers the circuit cards at the bottom of the cabinet. To do so,
loosen but do not remove the two screws that secure the cover. Slide the cover to the front until the
screw heads clear the keyhole slots in the cover. Then lift the cover out of the cabinet.
WARNING!
Damage to the MCA may result if the next step is not followed.
5.
Connect an approved grounding strap to your wrist. Attach the other end to a suitable ground.
6.
Remove the following cables from the Rectifier Shelf Interface circuit card.
a)
Separate the cable connected to the pigtail cable permanently connected to the circuit card.
b)
Disconnect the cable from connector J2.
c)
Disconnect the cable from connector J3.
d)
Disconnect the cable from connector J4.
7.
and locate the Rectifier Shelf Interface circuit card. Remove the four
screws securing the circuit card. Remove the circuit card.