Troubleshooting
Problem
Front panel indicators The following illustrations identify the indicators located on the front panel of the server. Tower model Rack model
Resolving The Problem
Front panel indicatorsThe following illustrations identify the indicators located on the front panel of the server.
Tower model
Rack model
| Index | Indicator | Description |
|---|---|---|
| 1 |  | Power-On Light: This green LED blinks when the server is in Standby mode (power is present but the server is not turned on). The blinking changes to a solid (continuous) light when you turn on the server remotely (Unattended mode) or by pressing the Power-On Switch. If this light is not on, the power cord is not connected or the power supply has failed. |
| 2 |  | POST Complete Light: This green LED lights when the server completes the power-on self-test (POST) without any errors. |
| 3 |  | SCSI Hard Disk Drive In-Use Light: This green LED lights when the server is accessing a SCSI device. If this light remains illuminated, it might indicate that either the SCSI bus or the system microprocessor has stopped. |
| 4 |  | Primary Microprocessor Activity Light: This green LED blinks to indicate the activity of a microprocessor installed in the primary microprocessor socket. The LED comes on during POST to indicate the presence of the microprocessor. |
| 5 |  | Secondary Microprocessor Activity Light: This green LED blinks to show the activity of a microprocessor installed in the secondary microprocessor socket. The LED lights during POST to indicate the presence of the microprocessor. When you install a secondary microprocessor, it becomes the startup microprocessor. |
| 6 |  | System Error Light: This amber LED shows that a system error occurred. System errors can include high temperature, excess current, or failure or errors in the microprocessor, system fan, memory, PCI bus, SCSI bus, USB, hard disk drive, diskette drive, serial port, keyboard interface, or power supply. When this LED is on, one or more LEDs on the system board also might be on, indicating where the error occurred. |
| 7 |  | Reserved: This LED is reserved for future use. |
| 8 |  | Hard Disk Drive Status Light (Amber): In a RAID environment, this amber LED lights continuously when the drive is faulty and needs to be replaced. You can replace these hot-swappable drives without turning off the server. If you do not have a RAID environment, this LED is not operational. |
| 9 |  | Hard Disk Drive Activity Light (Green): This green LED lights when the hard disk drive is being accessed. |
| 10 |  | Ethernet Transmit/Receive Activity Light: This green LED shows transmission and reception activity on the network. |
| 11 |  | Ethernet Link Status Light: This green LED shows an active link connection on the 10BASE-T or 100BASE-TX interface. |
| 12 |  | Ethernet Speed Light: This green LED lights when the Ethernet LAN speed is 100 Mbps. |
Rear panel indicators
The following illustrations identify the indicators located on the back of the server.
Tower model
Rack model
1 - Power Supply Lights: These green LEDs indicate a power good status for each of the 175-watt modules in the power supply. If any power supply light is not illuminated when the Power-On Light on the front of the server is on, there is a problem with that power supply. The power supply shipped with the server has two lights, one for each module in the power supply. The optional additional power supply has one power module and one green LED.
Document Location
Worldwide
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Document Information
Modified date:
23 January 2019
UID
ibm1DDSE-42ZSCG