Table 10. Integrated management module error messages (continued)
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 4, “Parts listing, Types 4255, 7945, and 7949 server,” on page 157 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Numeric sensor Planar 12V going
high (upper critical) has asserted.
Error An upper critical sensor going
high has asserted.
Check the OVER SPEC LED and
power-channel (A, B, C, D, E,
and AUX) error LEDs on the
system board. See the
information about the OVER
SPEC LED in “Light path
diagnostics LEDs” on page 65.
Numeric sensor Planar VBAT
going low (lower critical) has
asserted.
Error A lower critical sensor going low
has asserted.
Replace the 3 V battery.
Numeric sensor Fan nA Tach
going low (lower critical) has
asserted.
(n = fan number)
Error A lower critical sensor going low
has asserted.
1. Reseat the failing fan n, which
is indicated by a lit LED near
the fan connector on the
system board.
2. Replace the failing fan.
(n = fan number)
Numeric sensor Fan nB Tach
going low (lower critical) has
asserted.
(n = fan number)
Error A lower critical sensor going low
has asserted.
1. Reseat the failing fan n, which
is indicated by a lit LED near
the fan connector on the
system board.
2. Replace the failing fan.
(n = fan number)
The connector System board has
encountered a configuration error.
Error An interconnect configuration
error has occurred.
Reseat the front video cable on
the system board.
Chapter 3. Diagnostics 115
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