User`s manual

T-2

Troubleshooting CPU Boards: Solving Startup Problems

II. There is a

display on the

terminal, but

input from the

keyboard and/or

mouse has no

effect.

A. The keyboard

or mouse may be

connected

incorrectly.

Recheck the keyboard and/or mouse connections and

power.

B. Board jumpers

may be

configured

incorrectly.

Check the board jumpers per this manual.

C. You may have

invoked flow

control by

pressing a

HOLD

PAUSE key, or

by typing

<CTRL>-S

Also, a

HOLD

LED may be lit.

Press the HOLD or PAUSE key again.

If this does not free up the keyboard, type in

<CTRL>-Q

YOU ARE FINISHED (DONE) WITH THIS TROUBLESHOOTING PROCEDURE.

PROCEED WITH THE TROUBLESHOOTING PROCEDURE FOR YOUR PARTICULAR CPU

BOARD, AS GIVEN IN ONE OF THE FOLLOWING TABLES.

Table T-1. Basic Troubleshooting Steps for

ALL

CPU Boards (Continued)

Condition Possible Problem Try This: