Hardware Maintenance 81
■ The fans are working normally.
■ The rotation of the fans has not been blocked.
■ The blank filler panels have been inserted into the I/O module slots.
Troubleshooting I/O
Module
The Switch 8800 Family provides I/O moduleX LEDs on the fabric so that you can
check the state of these I/O modules.
Hardware
Maintenance
Replacing AC PSU
c
CAUTION: The Switch 8800 Family’s PSU is hot-swappable. Refer to the
document entitled “3Com Switch Family Safety and Regulatory Information,” part
number 10015300, for information about how to install and set up your switch
safely. Also:
■ The Switch 8800 Family uses multiple power systems, and you must turn off all
of them when removing the AC PSU.
■ The PSU of the Switch 8800 Family is heavy. Use both hands to pull it out
slowly and gently, with one holding its handle and the other holding its
bottom.
■ If you are not installing a replacement PSU, insert a blank filler panel into the
PSU slot so that dust cannot get into the unit and to allow proper ventilation
Removing an AC PSU
To remove an AC PSU:
1 Change the power switch on the PSU from the ON position into the OFF position.
2 Pull right the clamp holding the power cord connector and unplug the power
cord.
3 Unscrew the screws on the both sides of the PSU panel with a flathead
screwdriver.
Table 77 I/O Module LEDs
Indicator State description
RUN ON indicates an I/O module failure.
OFF indicates that the I/O module has failed or it is not in position
at all.
Blinking indicates that the I/O module is working normally.
ALM OFF indicates that there is no I/O module alarm or that the I/O
module is not in position at all.
ON indicates that there is an I/O module alarm.
2~6 (Switch 8807)
0~3, 6~9 (Switch 8810)
0~5, 8~13 (Switch 8814)
On the Switch 8807, I/O module 0 through I/O module 4
respectively correspond to slots 2 through 6.
On Switch 8810, I/O module 0 through I/O module 7 respectively
correspond to slots 0 through 3 and 6 through 9.
On Switch 8814, I/O module 0 through I/O module 11 respectively
correspond to Slots 0 through 5 and 8 through 13.
