IBM IntelliStation M Pro 6233, Hardware Maintenance Manual

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v
Flat signal cables, also called ribbon cables, connect SCSI, IDE, and diskette
drives to the system board.
– The wider gray signal cable has three connectors. One of these connectors
attaches to the CD-ROM drive, one is available for a device installed in bay 1,
and one attaches to the secondary IDE connector on the system board.
– The narrower gray signal cable has two connectors for attaching the diskette
drive to the diskette-drive connector on the system board.
– An Ultra160 twisted ribbon cable connects the internal Ultra160 SCSI hard
disk drive to the SCSI connector on the system board. This cable has five
additional connectors for attaching more internal SCSI devices.
– A round SCSI cable connects external SCSI devices to the SCSI connector on
the system board and provides an additional connector for a SCSI device
installed in bay 1. If a SCSI device is installed in bay 1 but no external SCSI
devices are attached, a SCSI terminator must be attached to the external
SCSI connector. For more information on connecting SCSI devices, see the
Adaptec SCSI documentation on the Software Selections CD that comes with
the computer.
Note: To locate connectors on the system board, see “System board connectors”
on page 42.
Considerations for cabling IDE internal drives: The following are some
important points to remember when connecting IDE internal drives:
v
When you install a hard disk drive, ensure that the drive connector at the end of
the signal cable is always connected to a drive; also, ensure that the drive
connector at the other end is connected to the system board. This reduces
electronic noise from the computer.
v IDE models ship with a gray ATA100 cable. Attach the blue connector to the
primary IDE connector on the system board, attach the black connector to the
master hard disk drive, and attach the gray connector to the subordinate hard
disk drive.
v If two IDE devices are used on a single cable, one must be designated as the
master device and the other as the subordinate device; otherwise, the system
might not recognize some of the IDE devices. Switch or jumper settings on each
IDE device determine the master or subordinate designation.
v
If two IDE devices are on a single cable and only one is a hard disk drive, the
hard disk drive must be set as the master device.
v If you have only one IDE device on a cable, it must be set as master.
Preinstallation steps
Before you install hard disk drives in the computer, verify that you have all the
cables and other equipment specified in the documentation that comes with the
hard disk drive. You might also need to perform certain preinstallation activities.
Some of the steps are required only during the initial installation of an option.
1. Read the “Safety information” on page 103, “Handling static-sensitive devices”
on page 43, and the documentation that comes with the drive.
2. Choose the bay in which you want to install the drive.
3. Check the instructions that come with the drive to see if you need to set any
switches or jumpers on the drive. If you are installing a SCSI device, be sure to
set the SCSI ID for that device.
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Hardware Maintenance Manual: IBM IntelliStation M Pro Type 6233 and 6850