IBM 7985 Problem Determination And Service Manual page 96

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, System x3655, Type 7985 and 7943," on page 93 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
VRD 3 status
Assertion 00 (Presence
detected)
VRD 3 status
Assertion 01 (Power unit
failure)
VRD 4 status
Assertion 00 (Presence
detected)
VRD 4 status
Assertion 01 (Power unit
failure)
VRD 5V
Assertion 00 (Presence
detected)
VRD 5V
Assertion 01 (Power unit
failure)
VRD 3.3V
Assertion 00 (Presence
detected)
VRD 3.3V
Assertion 01 (Power unit
failure)
78
IBM System x3655 Type 7985 and 7943: Problem Determination and Service Guide
Sensor Sensor
number type Action
26 08 Information only
26 08
1. (Trained service technician only) Reseat the microprocessor.
2. (Trained service technician only) Replace the microprocessor.
27 08 Information only
27 08
1. (Trained service technician only) Reseat the microprocessor.
2. (Trained service technician only) Replace the microprocessor.
28 08 Information only
28 08
1. Remove the following components one at a time, in the order
2. If the problems remains:
29 08 Information only
29 08
1. Remove the PCI adapters one at a time, to isolate the failing
2. Inspect the IDE power cable.
3. (Trained service technician only) Replace the system board.
4. Replace the SAS backplane assembly.
shown, restarting the server each time to isolate the failing
component:
a. Keyboard, mouse, and USB devices
b. DASD devices
c. PCI adapters
d. DVD drive
a. Inspect the SAS power cable and the IDE power cable.
b. Inspect the front panel USB cable.
c. (Trained service technician only) Replace the system
board.
component.