DEC 4000 600 series Owner's Manual page 29

Power Figure 1–7 shows the lights, switches, and connectors on the
Subsystem power supply at the rear of the system.
Figure 1–7 Power Subsystem
FEU PSC
MO
SI
SO
Components and Controls
DC5 DC3
AC Circuit
Breaker
FEU Failure
FEU OK
DC3 Failure
DC3 OK
DC5 Failure
DC5 OK
Main Out
Secondary In
Secondary Out
PSC Failure
PSC OK
Overtemperature
Shutdown
Fan Failure
Disk Power Failure
Fault ID Display
UPS Signal Control
Port
AC Present
AC Power Port
Getting Started 1–9
MLO-009367