IBM 9114-275 - IntelliStation POWER 275, Service Manual

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An error occurs if two diskette drives are installed simultaneously in the Slimline bays.
The media backplane plugs into the system backplane and provides connections for the operator panel as
well as the devices in the media bays.
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Media bay 1 can accommodate a Slimline IDE DVD-ROM or a diskette drive.
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Media bay 2 can accommodate a Slimline DVD-ROM.
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Media bay 3 can accommodate a SCSI DVD-RAM or tape drive.
Note: A built-in external SCSI port is not provided. Customers can use an optional SCSI adapter for
connections to an external SCSI subsystem.
For an updated listing of hot-swappable disk-drive sizes, contact your sales representative.
Disk Drives and Disk Drive Backplane
The system supports one DASD backplane that supports four disk drives. This backplane is standard on
the system and is located next to the media backplane. Disk drives of different sizes and speeds can be
mixed on this system. The following types of disk drives are supported:
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36.4 GB Ultra160 10K RPM
v 73.4 GB Ultra160 10K RPM
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146.8 GB Ultra160 10K RPM
v 36.4 GB Ultra160 15K RPM
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73.4 GB Ultra160 15K RPM
v 146.8 GB Ultra160 15K RPM
Power Supplies
Two power supplies maximum per system; the second power supply is for redundant power:
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ac input type 100-127V ac or 200-240V ac
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Single phase
Keyboard
v Standard: 101-key enhanced keyboard.
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101/102 or 106-key enhanced keyboard is also available.
Mouse
v Three-button
Operator Panel
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32-character LED diagnostics display.
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LEDs for power on and attention.
v Power-on button.
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System reset button – Dumps AIX (if dump is enabled) and reboots.
v Service processor reset switch – Resets the service processor into standby mode. The service
processor reset switch is the pinhole located above the system reset button on the operator panel.
Chapter 1. Reference Information
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