Motorola 700/800-Series User Manual

D-1

In the event of difficulty with your CPU board, try the simple 
troubleshooting steps on the following pages before calling for help 
or sending the board back for repair. Some of the procedures will 
return the board to the factory debugger environment. (The board 
was tested under those conditions before it left the factory.) The 
self-tests may not run in all user-customized environments.

I. Nothing works, 

no display on 
the terminal.

A. If the 

FUSES

 

LED is not lit, 
the board may 
not be getting 
correct power.

1. Make sure the system is plugged in.
2. Check that the board is securely installed in its backplane 

or chassis.

3. Check that all necessary cables are connected to the board, 

per this manual.

4. Check for compliance with System Considerations, per 

this manual.

5. Review the Installation and Startup procedures, per this 

manual. They include a step-by-step powerup routine. Try 
it.

B. If the LEDs are 

lit, the board 
may be in the 
wrong slot.

1. For VMEmodules, the CPU board should be in the Þrst 

(leftmost) slot.

2. Also check that the Òsystem controllerÓ function on the 

board is enabled, per this manual.

C. The Òsystem 

consoleÓ 
terminal may 
be conÞgured 
incorrectly.

ConÞgure the system console terminal per this manual.