User`s manual

T
T-1
ATroubleshooting CPU Boards:
Solving Startup Problems
❏ 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.
Table T-1. Basic Troubleshooting Steps for
ALL CPU Boards
Condition Possible Problem Try This:
I. Nothing
works, no
display on the
terminal.
A. If the
RUN or
PWR 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,
per this manual.
5. Review the Installation and Startup procedures, per
this manual. In most cases, this includes 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
first (leftmost) slot.
2. Also check that the “system controller” function on
the board is enabled, per this manual.
C.The “system
console”
terminal may be
configured
wrong.
Configure the system console terminal per this
manual.