IBM 6151 Maintenance And Service Manual page 135

Step 3
Look at the display screen.
Note: If the display is blank or too bright, check the power,
brightness, and contrast controls before answering the following
question.
DlAG-l
This diskette contains diagnostics tmd utilities for your system. You
should use these procedures whenever yuu tlfe having problems with your system
which have not been currected by any software application procedures available.
In general, the procedures will run automatically_ However. sometimes you will
be rt'quired to select options, wll the system when to cOntinue, do simple
tasks, and exchange diskettes.
Several keys are used to control the procedures:
. The Enter key continues the procedure or performs an action.
- The End key stops a tf'st or an action.
- The 1"10 key returns to the prf'vious menu
- The Esctlpe kt,y resets the procedures and returns to these instructions
. The Page Down key allows a list to be scrolled forward.
- The Page Up key allows a list to be scrolled backward.
- The Backspace key allows keying errors to be corrected.
Press Enter to continue.
ARE THE "DIAGNOSTIC OPERATING INSTRUCTIONS"
DISPLAYED WITHOUT AN OBVIOUS DISPLAY PROBLEM?
NO
YES
Go to "Step 17" on page 3-0030-17.
Continue on the next page.
(6/88) Problem Isolation Charts
3-0030-3