IBM B50 manual Online Diagnostics Modes of Operation, Service Mode

Online Diagnostics Modes of Operation

The Online Diagnostics can be run in three modes:

ŸService Mode

ŸConcurrent Mode

ŸMaintenance Mode

Service Mode

Service

mode provides

the

most complete checkout of the system resources. This

mode also requires that no

other programs be running on the system. All system

resources,

except

the

SCSI

adapter

and

the disk

drives

used

for paging,

can be

tested. However,

note

that

the memory and processor

are

only

tested during

POST,

and the

results

of

the POST tests

are

reported

by

diagnostics.

Error-log analysis is done in service mode when you select the Problem

Determination

option

on

the

DIAGNOSTIC

MODE

SELECTION menu.

Running the Online Diagnostics in Service Mode

To run Online Diagnostics in service mode, use the following steps:

1. Ask the system operator to stop all programs, including the AIX operating system

2.Turn the power off.

3.Remove all tapes, diskettes, and CD-ROMs.

4.Turn the power on.

a. When or afterKeyboardthe indicator appears, press 6 on the keyboard to indicate that diagnostics are to be loaded.

b. Enter any requested passwords.

c. Follow any instructions to select a console.

5. After the diagnostic controller loads, DIAGNOSTIC OPERATING INSTRUCTIONS appear on the console display.

6. Follow the displayed instructions to check out the desired resources.

7.When testing is complete, use the 3 key to return to the DIAGNOSTIC OPERATING INSTRUCTIONS.

8. Press the 3	key	(from a defined terminal) or press	99 (for	an undefined terminal)
to shut down	the	diagnostics before turning off the	system	unit.

5-107046 Model B50 User's Guide