
vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
vSee the parts listing in the Hardware Maintenance Manual to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.
Symptom | Action |
|
|
The server does not turn off. | 1. Turn off the server by pressing the |
| |
| 2. Restart the server. |
| 3. If the server fails POST and the |
| the power cord for 20 seconds; then, reconnect the power cord and restart the |
| server. |
| Attention: In a dc power environment, only trained service personnel other |
| than Lenovo service technicians are authorized to connect or disconnect power |
| to the dc power supply. See the documentation that comes with each dc power |
| supply. |
| 4. If the problem remains, suspect the system board. |
|
|
The OVER SPEC LED on the | See the power troubleshooting table in the Hardware Maintenance Manual or call |
diagnostics panel is lit, and the | for service. |
one of the power channel LEDs |
|
on the system board is lit. |
|
|
|
The server unexpectedly shuts | See “Solving undetermined problems” in the Hardware Maintenance Manual. |
down, and the LEDs on the |
|
operator information panel are |
|
not lit. |
|
|
|
Serial port problems
vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
vSee the parts listing in the Hardware Maintenance Manual to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.
Symptom | Action | ||
|
|
| |
The number of serial ports that | 1. | Make sure that: | |
are identified by the operating | |||
| v Each port is assigned a unique address in the Configuration/Setup Utility | ||
system is less than the number |
| program and none of the serial ports is disabled. | |
of installed serial ports. |
| ||
| v The | ||
| 2. | Reseat the serial port adapter, if one is present. | |
| 3. | Replace the serial port adapter, if one is present. | |
|
|
|
140ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Installation and User Guide