IBM 5531 Operator's Manual page 155

Problem Determination Procedures
Test 3800 - Data Acquisition and Control Adapter
(continued)
2. Did the following message appear on your screen?
Note: Refer to Appendix A, "Option List" to verify information is correct for
options installed.
YES - Continue with the next step.
NO -
Have the system unit serviced.
5-3800-2
Operator's Guide