BG Systems FlyBox, Руководство по оборудованию

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FlyBox Hardware Manual 19
C
HAPTER
5
T
ROUBLESHOOTING
E
very FlyBox is tested prior to shipping, and we have
confidence that when you connect a FlyBox it will
work. However, since we have two pieces of hardware
(host and FlyBox), three pieces of software (host,
FlyBox, and the operating system), and a cable, we
realize that there will be occasions when you connect a
FlyBox it will appear that nothing is happening.
Chapter 7 of the LV824 Software Manual also contains
trouble shooting advice, and should be checked for
information regarding host setup.
5.1 T
HE
F
LY
B
OX
I
S
N
OT
R
ESPONDING
You have plugged everything in, and you try to run a
test program (
eprom or flybox ), and the program exits.
Check the following:
1. Is the red power LED on the front of the
FlyBox on ? If not check the fuses and power
connection.
2 Is the green LED at the back of the FlyBox on?
If not check your power supply. If the red
LED is on, and the green LED is not, contact
BG Systems.
3 Does the yellow LED blink when you turn on
power? If not then the FlyBox is not working.
Call BG Systems for help.
4 If the yellow LED blinks when you apply
power, it should also blink when you run a
test program. If it does not, then the
character from the Unix host has not made it
to the FlyBox. Check your cables and the host
configuration.
5 Did the test program print any helpful text on
the screen? If you do not have permission to
write to the serial port, the software should
tell you. In this case contact your system
administrator for help.
A common software problem is that the host is
configured with the requested serial port as a terminal
running at 9600 baud. The FlyBox software may run
for a short period (with the baud at 19200), but Unix
will come along and reset the baud rate to 9600 - at
which point the FlyBox will stop responding.
5.1.1 Serial Cable
The most common hardware problem is when there is a
problem with the serial cable. This problem is
compounded by the fact that SGI uses three different
types of serial connector (although it appears they have
finally settled on the PC DB-9). We make every effort to