Chapter 1: Overview
60
Power Supply Interfaces (Opto-couplers)The chassis has two power supply interfaces, also referred to as opto-
couplers, in the lower right corner on the rear panel. The interfaces,
labeled Power Supply Interface, are used by the active master controller
card to obtain status information from the power supplies. The interfaces
are shown in Figure 27.
Figure 27. Power Supply Interfaces (Opto-couplers)
The controller card uses the top interface to communicate with the power
supplies in slots A and C, and the bottom interface to communicate with
the power supplies in slots B and D.
The power supply interfaces are not hot swappable and should only be
serviced by an authorized service technician.
LED Each interface has one LED, labeled Power. The LED is described in
Table 18 on page 61.