IBM 220, Hardware Maintenance Manual

Page: 15 / 178

General information
7
CD-ROM eject button: Press this button to release a CD from the drive.
CD-ROM drive activity light: When this light is on, it indicates that the CD-ROM
drive is in use.
Diskette-eject button: Press this button to release a diskette from the drive.
Diskette-drive activity light: When this light is on, it indicates that the diskette drive
is in use.
SCSI activity light: When this green light is flashing, the controller is accessing a
SCSI device, for example, a hard disk drive.
Note: Hot-swap hard disk drives also have an activity light. This light is also known
as the SCSI hard disk drive activity light.
If the server has a ServeRAID™ controller installed and this light flashes slowly (one
flash per second), the drive is being rebuilt. When the light flashes rapidly (three
flashes per second), the controller is identifying the drive.
Power-on light: When this green light is on, system power is present in the server.
Power-control button: Press this button to manually turn the server on or off.
System error light: When this amber light is on, it indicates that a system error has
occurred. An amber error light on the interior of the server, adjacent to the faulty
component, will also be on to further isolate the error. (For more information, see
“Diagnostics” on page 11.)
Cover-release latch: Slide this lever to release the cover.
CD-ROM
eject button
CD-ROM drive
activity light
Diskette-eject
button
SCSI
activity light
Power-on
light
Power-control
button
System error
light
Diskette drive
activity light