Serial Jumper Module - IBM RT PC Options Installation

Serial Jumper Module
TNL SN20-9864 (May 1987) to 75X0217
To change the serial jumper module position, do the following:
1. Locate the top jumper module, which sets the interrupt level for the
serial port.
o
00 0
00
DO
DODD
DO
~DO
0 DOD
Warning: Do not bend the pins!
Alternate
Serial Connector
Module Position
(Interrupt Level 3)
2. Carefully insert a small, flat-bladed screwdriver under the module and
lift, alternating ends to lift the module evenly.
3. Rotate the jumper module to the desired position, and reinstall.
Section 6. Communication and Network Adapter Options 6-7