Table 4. Switches 1 - 8 (continued)
Switch
number
Switch
description
5
Power-on override. The default setting is Off (disabled).
When On, overrides the power-on switch and forces power-on mode. The
system will always boot without the use of the power-on switch.
4
Reserved.
3
Reserved.
2
Reserved.
1
Reserved.
Figure 18 identifies system-board LEDs. You might need to refer to this figure when
troubleshooting a problem.
Note:
The power-on indicator (CR56) is on when system power is present in the
appliance. When this LED flashes, the appliance is in standby mode (the
system power supply is turned off and current is present).
Diagnostics panel LEDs:
PS1
Power supply 1 failure.
PS2
Power supply 2 failure.
PS3
Power supply 3 failure.
NON
Non-redundant power.
OVER
Overspec. The system has exceeded the power capabilities of the installed
power supply units.
NMI
Non-maskable-interrupt occurred.
TEMP
System temperature exceeded maximum rating.
FAN
A fan failed or is operating slowly.
MEM
Memory failure. One or more memory DIMMS have failed.
CPU
Microprocessor failure. One or both microprocessors have failed.
PCI A
Error on PCI channel A or system board.
Microprocessor 2
failure (CR7)
Microprocessor 1
failure (CR1)
Voltage regulator module
(VRM2) failure (CR16)
Integrated voltage regulator
(VRM1) failure (CR4)
Diagnostics panel
DIMM 4
failure (CR20)
DIMM 3
failure (CR18)
DIMM 2
failure (CR28)
DIMM 1
failure (CR21)
Power-on
(CR56)
Advanced System
Management Processor
error (CR70)
Figure 18. System board LED locations
34
IBM TotalStorage
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