IBM System x3755 Problem Determination And Service Manual page 181

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 3, "Parts listing, System x3755 Type 8877 and 7163," on page 25 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.
BMC log message
Fan 4 detected
Assertion 00 (Not
detected)
Fan 4 detected
Assertion 01 (Presence
detected)
Fan 5 detected
Assertion 00 (Not
detected)
Fan 5 detected
Assertion 01 (Presence
detected)
Fan 6 detected
Assertion 00 (Not
detected)
Fan 6 detected
Assertion 01 (Presence
detected)
Drive 1 status
Drive 2 status
Drive 3 status
Drive 4 status
Power supply 1 status
Assertion 00 (Presence
detected)
Power supply 1 status
Assertion 01 (Power
supply failure) or 03
(Power supply ac loss)
Power supply 2 status
Assertion 00 (Presence
detected)
Sensor Sensor
number type Action
53 04 Replace or install the fan.
53 04 Information only
54 04 Replace or install the fan.
54 04 Information only
55 04 Replace or install the fan.
55 04 Information only
60 C1 Information only
61 C1 Information only
62 C1 Information only
63 C1 Information only
70 08 Information only
70 08
1. Check the primary voltages to the power supply.
2. Reseat power supply 1.
3. Replace power supply 1.
4. (Trained service technician only) Replace the I/O board, see
71 08 Information only
"Removing the I/O board assembly" on page 68 and
"Replacing the I/O board assembly" on page 69.
165
Chapter 5. Diagnostics