Running The System Diagnostics; Error Log Entries; Solving System-To-Host System Communication Problems; Cabling The System Unit To The Host System - IBM R/S6000 7012 300 Series Operator's Manual

1. Use SMIT to change the status of this adapter to online . If needed, see the AIX Version
4.1 Block Multiplexer Channel Adapter: User's Guide and Service Information for
procedures.
2. Start the application programs that need to use this block multiplexer channel adapter.
3. Have the operator of the host system start communications with this block channel
adapter.
If you have another block multiplexer channel adapter in this system unit, you must use
this same procedure to start it.

Running the System Diagnostics

Since the system is directly attached to the bus and tag cables of the block multiplexer
channel of the host system, the communications between the host system and all of the
block multiplexer channel adapters must be stopped before diagnostics are run on any block
multiplexer channel adapter. See "Stop Communications" for this adapter information for
general guidelines, or see the AIX Version 4.1 Block Multiplexer Channel Adapter: User's
Guide and Information for detailed procedures.
Before disconnecting any cables from the adapter or interface assembly, the host system
block multiplexer channel must be stopped. Get the host system operator to do this for you.
The system diagnostics allow wrap testing at the adapter and at the bus and tag cable
connectors. See the AIX Version 4.1 Block Multiplexer Channel Adapter Information for
detailed procedures.

Error Log Entries

Both the error log in the Version 3 Operating System and the host system error log may
provide valuable information for problem solving.
For a description of the system error logging and the error log entries representing this
adapter, see the following manuals:
AIX Version 4.1 Problem Solving Guide and Reference , form number SC23–2606
Adapters, Devices, and Cable Information , form number SA23–2764
AIX Version 4.1 Block Multiplexer Channel Adapter: User's Guide and Service
Information , form number SC23–2427.
Solving System–to–Host System Communication Problems
Use the AIX Version 4.1 Block Multiplexer Channel Adapter: User's Guide and Service
Information and the AIX Version 4.1 Problem Solving Guide and Reference to solve
operational problems after initial installation.
For installation problems, use the AIX Version 4.1 Block Multiplexer Channel Adapter:
User's Guide and Service Information to be sure the software is installed, the channel is
cabled correctly, and the host system and operating system are configured correctly.

Cabling the System Unit to the Host System

Refer to Adapters, Devices, and Cable Information , form number SA23–2764, for more
cabling information

Enterprise System Connection (ESCON) Adapter

The ESCON Adapter allows the system unit to directly attach to a system 390–type ESCON
channel.
Using the Standalone and Online Diagnostics
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