IBM x3690 X5 Service Manual page 94

Table 6. Light path diagnostics panel LEDs (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 3, "Parts listing", in the Problem Determination and Service Guide to determine which components
are customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If a action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
LED Description
BRD (Continued) An error has occurred on the
system board.
BRD (Continued) An error has occurred on the
system board.
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System x3690 X5 Types 7147, 7148, 7149, and 7192: Problem Determination and Service Guide
Action
If the 12 V channel E error LED is lit, complete the following
steps:
1. Turn off the server and disconnect the power from the
server.
2. Remove all installed microprocessors.
3. (Trained service technician only) toggle the switch block
(SW2), switch 3 to allow the server to power-on. See
Table 3 on page 22 for the location of the SW2 switch
block on the system board.
4. Restart the server to see whether the problem remains.
5. Reinstall each device that you removed in step 2 one at a
time, starting the server each time, to isolate the failing
device.
6. Replace any failing device.
7. (Trained service technician only) Replace the system
board.
If the 12 V channel F error LED is lit, complete the following
steps:
1. Turn off the server and disconnect the power from the
server.
2. Remove the memory tray.
3. Restart the server to see whether the problem remains.
4. Reinstall each device that was removed in step 2 one at a
time, starting the server each time, to isolate the failing
device.
5. Replace any failing device.
6. (Trained service technician only) Replace the system
board.
(Continued on the next page)
If the 12 V channel G error LED is lit, complete the following
steps:
1. Turn off the server and disconnect the power from the
server.
2. Remove the DIMMs from the system board.
3. Restart the server to see whether the problem remains.
4. Reinstall each DIMM pair that was removed in step 2 one
pair at a time, starting the server each time, to isolate the
failing device.
5. Replace any failing DIMMs.
6. (Trained service technician only) Replace the system
board.