Dell 1955 Hardware Owner's Manual page 20

Figure 1-6. Power Supply Indicators
3
1 fault indicator
Table 1-5. Power Supply Indicator Codes
Indicator
DC power indicator
Fault indicator
AC power present
indicator
20
About Your System
2 AC power present indicator
Icon Activity
Indicator
Green
Amber
Green
1
Indicator Code
The power supply is operational.
The power supply is in a fault condition. The fault
condition can result from either a failed power supply
or a failed fan within the power supply. See "Power
Supply Modules" on page 58.
AC power is present at the power supply and the system
is connected to an AC power source.
2
3 DC power indicator