Dell Precision Rack 7910 Dell Precision Rack 7910 Owners Manual - Page 141

receive different input voltages, they can output different

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Convention D E Power indicator Condition pattern NOTE: For AC power supplies, use only PSUs with the Extended Power Performance (EPP) label on the back. Mixing PSUs from previous generations of servers can result in a PSU mismatch condition or failure to power on. Flashing amber Indicates a problem with the power supply unit. CAUTION: When correcting a power supply unit mismatch, replace only the power supply unit with the flashing indicator. Swapping the opposite power supply unit to make a matched pair can result in an error condition and unexpected system shutdown. To change from a High Output configuration to a Low Output configuration or vice versa, you must power down the system. CAUTION: AC power supplies support both 220 V and 110 V input voltages with the exception of Titanium power supplies, which support only 220 V. When two identical power supplies receive different input voltages, they can output different wattages, and trigger a mismatch. CAUTION: If two power supplies are used, they must be of the same type and have the same maximum output power. CAUTION: Combining AC and DC power supplies is not supported and triggers a mismatch. Not lit Power is not connected. 141

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Convention
Power indicator
pattern
Condition
NOTE:
For AC power supplies, use only PSUs with the Extended
Power Performance (EPP) label on the back. Mixing PSUs from
previous generations of servers can result in a PSU mismatch
condition or failure to power on.
D
Flashing amber
Indicates a problem with the power supply unit.
CAUTION: When correcting a power supply unit mismatch,
replace only the power supply unit with the flashing indicator.
Swapping the opposite power supply unit to make a matched
pair can result in an error condition and unexpected system
shutdown. To change from a High Output configuration to a
Low Output configuration or vice versa, you must power
down the system.
CAUTION: AC power supplies support both 220 V and 110 V
input voltages with the exception of Titanium power supplies,
which support only 220 V. When two identical power supplies
receive different input voltages, they can output different
wattages, and trigger a mismatch.
CAUTION: If two power supplies are used, they must be of the
same type and have the same maximum output power.
CAUTION: Combining AC and DC power supplies is not
supported and triggers a mismatch.
E
Not lit
Power is not connected.
141