Carrier Grade GroomerII – Installation Guide
2
Hardware maintenance
2.1
Servicing
There are no user serviceable parts inside the GroomerII chassis. The unit may
optionally be powered off for inspection periodically and to remove any dust that
accumulates internally. This should only be performed by qualified technical
personnel.
2.2
Power module replacement
The carrier grade GroomerII is specified to operate with dual redundant power
supplies to provide a high MTBF. In the event of single power module failure, a PSU
fail indicator is lit on the front of the unit. Power module status is available at the rear
of the chassis as follows:
Power supply status
LED indication
No input power
off
No input power to
module, or fan fail, or
other critical fault
Continuous
amber
Power on with warning
conditions such as slow
fan or high temperature
1Hz blink amber
Standby or forced
shutdown state
1Hz blink green
Power OK, operating
within specification
Continuous green
A power module may be removed and replaced with a spare while the unit is
operating. The remaining power module becomes a single point of system failure
while operated in this non-redundant configuration. It is recommended to complete
power module replacements within a two minute period to preserve optimal
environmental conditions within the server. The system should not be operated for
extended periods with one of the PSUs removed for replacement, unless a blanking
plate is fitted to the empty module position.
CAUTION
Observe electrostatic discharge precautions when handling power
modules. Do not touch the gold plated connector while replacing a module.
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