Cisco Catalyst 3650 Series Manual page 21

Chapter 1 Product Overview
Table 1-13
DC-Power Supply Module LEDs
DC OK
Off
Green
For information about replacing a power supply module, wiring a DC power supply module, and module
specifications, see
Fan Modules
The switch has three internal hot-swappable 12-V fan modules. The air circulation system consists of
the fan modules and the power supply modules. The airflow patterns vary depending on the power supply
configuration.
Figure 1-8
flow, and the red arrow shows warm air flow. When the fan modules are operating properly, a green LED
is on at the top left corner of the fan assembly (viewed from the rear). If the fan fails, the LED turns to
amber. The switch can operate with two operational fans, but the failed fan should be replaced as soon
as possible to avoid a service interruption due to a second fan fault.
Note Three fans are required for proper cooling.
Table 1-14
Fan Module
FAN-T1=
Figure 1-8
For information about installing a fan module and fan specifications, see
and
OL-29734-01
Switch Power Supply Module LEDs (continued)
Description
No DC input power.
DC input power present.
Chapter 3, "Power Supply Installation,"
shows the airflow patterns for the 24- and 48-port switches. The blue arrow shows cool air
Switch Fan Module
24- and 48-Port Switch Airflow Patterns
Appendix A, "Technical Specifications."
PS OK
Off
Green
Red
Description
Fan module
Catalyst 3650 Switch Hardware Installation Guide
Description
Output is disabled, or input is
outside operating range (DC LED
is off).
Power output to switch active.
Output has failed.
and Appendix A, "Technical Specifications."
Cat alys t 365 0 48P
oE+ 4X1 G
Chapter 4, "Installing the Fan,"
Rear Panel
1-19