Motorola MVME187 User Manual

D-1

❏

Try these simple troubleshooting steps before calling for help 
or sending your CPU board back for repair. 

❏

Some of the procedures will return the board to the factory 
debugger environment. (The board was tested under these 
conditions before it left the factory.)

❏

Selftest may not run in all user-customized environments.

I. Nothing 
works, no 
display on the 
terminal.

A. If the 

RUN

 or 

+12V

 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, in Chapter 3.

5. Review the Installation and Startup procedures, 

in Chapter 3. The step-by-step powerup routine 
for your board is on page 3-17. Try it.

B. If the LEDs 
are lit, the board 
may be in the 
wrong slot.

1. The CPU board should be in the Þrst (leftmost) 

slot if it is to be the system controller.

2. The Òsystem controllerÓ function requires that 

header J2 be set properly. See Chapter 3.

C. The system 
console 
terminal may be 
conÞgured 
wrong.

ConÞgure the system console terminal according to 
the instructions in Chapter 3.