Serial Ports - IBM XSERIES 255 TYPE 8685 Hardware Maintenance Manual And Troubleshooting Manual

SCSI port connectors
The following illustration shows the pin-number assignments for the 68-pin SCSI
connectors.

Serial ports

Your server has one standard serial port: serial port A. The operating system and
the ISMP cannot use or share serial port A.
Some application programs require specific ports, and some modems function
properly only at certain communication port addresses. You might need to use the
Configuration/Setup Utility program to change communication port address
assignments to prevent or resolve address conflicts.
Viewing or changing the serial-port assignments
To view or change the serial-port assignments:
1. Restart the server and watch the monitor screen.
2. When the message Press F1 for Configuration/Setup appears, press F1.
3. From the main menu, select Devices and I/O Ports; then, press Enter.
4. Select the serial port; then, use the arrow keys to advance through the available
5. Select Save Settings; then, select Exit Setup to exit from the
Serial-port connectors
The following illustration shows the pin-number assignments for the 9-pin, male
D-shell serial-port connector on the rear of your server. These pin-number
assignments conform to the industry standard.
112
xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide
Table 13. SCSI IDs for optional backplane, SCSI controller, and hot-swap drives in bays 7
through 12 (continued)
Device
Drive bay 9
Drive bay 10
Drive bay 11
Drive bay 12
1
34
35
68
Note: The Devices and I/O Ports choice appears only on the full configuration
menu. If you set two levels of passwords, you must type the
administrator password to access the full configuration menu.
settings.
Configuration/Setup Utility main menu.
1 5
6 9
SCSI ID
12
13
14
15