Install Guide

Figure 19. S4048T-ON PSU-side view
1 PSU1 2 Fan modules
3 RS-232/RJ-45 serial console port 4 PSU2
5 10/100/1000BaseT Ethernet management port
Fan module installation
The fan modules in the S4048T-ON are eld replaceable.
Module slot 1 is on the left side of the chassis, module slot 2 is in the middle of the chassis, and module slot 3 is on the right side of the
chassis.
CAUTION
: DO NOT mix airow directions. All fans must use the same airow direction—reverse or normal. If you mix the airow
direction, to avoid damage to the switch, you must correct the mixed airow.
1 Take the fan module out of the shipping box.
2 Use the grab handle to slide the module into the bay.
Figure 20. S4048T-ON fan module installation
1
1—Fan module
Fan module replacement
CAUTION
: Complete steps 2 and 3 within one minute or the system powers down.
1 Use the red-marked grab handle to slide the fan module out of the bay.
2 Use the red-marked grab handle on the replacement module to slide it into the bay.
3 Ensure that the module is secure.
34
Fans