IBM RT PC 10 Hardware Maintenance And Service page 100

Step 32
Turn the Brightness and Raster Test control about one-fourth turn
counter-clockwise to turn the raster test off.
DIAGNOSTIC OPERATING INSTRUCTIONS DIAG-I
This diskette contains diagnostics and utilities for your system. You
shoul d use these procedures whenever you are havi ng problems with your system
which have not been corrected by any software application procedures available.
In general, the procedures will run automatically. However, sometimes you will
be required to select options, tell 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 test or an action.
- The FlO key returns to the previous menu and cancels any changes.
- The Escape key resets the procedures and returns to these ins tructi ons.
- The Page Down key allows a list to be scrolled forward.
- The Page Up key allows a 1ist to be scrolled backward.
- The Backspace key allows keyi ng errors to be corrected.
Press Enter to continue.
ARE THE "DIAGNOSTIC OPERATING INSTRUCTIONS" DISPLAYED
CORRECTLY?
NO
YES
Go to "Step 34" on page 3-57.
Set the Brightness and Raster Test control to the desired level.
This completes the repair.
Problem Isolation Charts
3-55