Lenovo ThinkServer RD120 Hardware Maintenance Manual page 205
Hardware maintenance manual for rd120
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Also See for ThinkServer RD120:
- Safety information manual (389 pages) ,
- User manual (132 pages) ,
- Manual d'utilisation (130 pages)
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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, ThinkServer RD120 Machine Types 6444, 6445, 6446, and 6447," 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.
System event/error log message
+5v critical under voltage fault
5V fault
+2.5v critical over voltage fault
+2.5v critical under voltage fault
+1.8v critical over voltage fault
+1.8v critical under voltage fault
The system real time clock battery is no longer
reliable.
+3.3v critical over voltage fault
Action
1. Remove the following devices, which are powered by 5 volts:
v All PCI adapters
v USB devices
v CD-RW/DVD drive
v Tape drive, if one is installed
v Hard disk drive backplane
2. Reinstall each I/O device removed in step 1 on page 186, one
at a time, restarting the server each time, to isolate a defective
device. Replace any defective device.
3. If the error continues, replace the power backplane. Restart the
server.
4. If the error continues, (trained service technician only) replace
the system board.
1. Remove the following devices, which are powered by 5 volts:
v All PCI adapters
v USB devices
v CD-RW/DVD drive
v Tape drive, if one is installed
v Hard disk drive backplane
2. Reinstall each I/O device removed in step 1 on page 186, one
at a time, restarting the server each time, to isolate a defective
device. Replace any defective device.
3. If the error continues, replace the power backplane. Restart the
server.
4. If the error continues, (trained service technician only) replace
the system board.
Information only
Information only
Information only
Information only
Replace the battery.
1. Remove all PCI adapters.
2. Reinstall each PCI adapter, one at a time, restarting the server
each time, to isolate a defective adapter. Replace any defective
adapter.
3. If the error continues, (trained service technician only) replace
the system board.
187
Chapter 5. Diagnostics
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