user manual

Solving Startup Problems
B-2 Computer Group Literature Center Web Site
B
II. There is a display
on the terminal;
however, keyboard
and/or mouse input
has no effect.
A. The keyboard or
mouse may be
connected
incorrectly.
Recheck the keyboard connections and power.
Verify correct configuration of RS232 interface.
B. Board jumpers
may be configured
incorrectly.
Check the board jumpers per the instructions in this
manual.
C. You may have
invoked flow
control by pressing
a HOLD or PAUSE
key, or by typing:
<CTRL> - S
Press the HOLD or PAUSE key again.
If this does not free up the keyboard, type in:
<CTRL >- Q
III. Debug prompt
PPC6-Bug> does
not appear at
powerup; the
board does not
autoboot.
A. Debugger Flash
may be missing
1. Disconnect all power from your system.
2. Check that the proper debugger devices are installed.
3. Reconnect power.
4. Restart the system using the
ABT/RST switch (press and
hold switch down, approximately 3 - 5 seconds).
5. If the debug prompt appears, go to step IV or step V, as
indicated. If the debug prompt does not appear, go to
step VI.
B. The board may
need to be reset.
IV. Debug prompt
PPC6-Bug>
appears at
powerup; the
board does not
autoboot.
A. The initial
debugger
environment
parameters may be
set incorrectly.
1. Start the onboard calendar clock and timer. Type:
set mmddyyhhmm <CR> where the characters indicate
the month, day, year, hour, and minute. The date and
time will be displayed.
CAUTION: Performing the next step ( env;d ) will
change some parameters that may affect your system’s
operation.
B. There may be some
fault in the board
hardware.
Table B-1. Troubleshooting Problems (Continued)
Condition Possible Problem Possible Resolution: