Cabletron Systems SFCS-200WG User Manual
Page 76
5-10
Hardware Maintenance Procedures
The procedure for replacing a model B SFCS-1000 AC power supply module
is as follows:
WARNING!
A replacement DC power supply should
never be placed in an SFCS-1000 that already
contains an AC power supply, and vice-versa.
If these instructions are not heeded, there is a
risk of electrical shock, danger to personal
health, and serious damage to the equipment.
WARNING!
It is highly recommended that you use the
included grounding strap when handling this
or any other component.
1.
Determine which power supply is defective by examining the
power supplies themselves. An extinguished “PWR OK” LED or
an illuminated “FAULT” LED indicates the failed supply. On an
SFCS-1000, power supply “1” is in the slot labeled PS1 on the chas-
sis (top), while power supply “2” is in the slot labeled PS2 on the
chassis (bottom).
WARNING!
Failure to perform Step 2 can result in serious
injury to the user or damage to the equipment.
2.
Turn OFF the power switch on the front of the defective power
supply. Wait at least one (1) second after turning off the power
before moving on to the next step.
3.
Disconnect the AC line from the front of the defective power
supply.
4.
Unscrew the two captive fasteners (one on the upper, left corner of
the faceplate and one on the lower, right corner of the faceplate,
see Figure 3.3) using a straight blade screwdriver.