Gasboy CFN Series Diagnostic Manual - Manual (Page 417)

CFN Islander
12/26/02 13-49
Possible Cause Checks Corrective Action
Incorrect jumper settings on
the site communication I/O
board. Check the jumpers (K1 & K3
for the first port, K2 & K4 for
the second) on the site
communication I/O board. Correct the jumper settings if
they are wrong.
Terminal is connected to the
wrong port. Check that the cables from
the terminal blocks are
connected to the correct
connector on the site
communications I/O board.
The brown wire from the
cable connects to pin 1 of the
connector. Pin 1 of the cable
must align with pin 1 of the
board connector it is attached
to. For connection to the local
port (port 0 or 1 on Islander
II), P3 for RS-232, P5 for RS-
422. For the remote port
(port 2 or 3 on Islander II), P4
for RS-232, P6 for RS-422.
Short haul modem off, offline,
disconnected, or bad Check short haul modem at
the terminal. If off, turn on; if offline, put
online; if disconnected,
reconnect. If possible
perform a loopback test on
the modem. Refer to
manufacturer's instructions
for loopback test. Replace if
none of these actions correct
the problem.
Defective terminal. Try using a different Islander
communications port. This
requires changing the
terminal block cable
connection. For RS-232, use
P3 if the terminal is in the
LOCAL port (port 0 or 1 on
Islander II), or use a P4 if the
terminal is in the REMOTE
port. For RS-422, use P5 if
the terminal is in the LOCAL
port (port 0 or 1 on Islander
II), or use a P6 if the terminal
is in the REMOTE port. Make
sure the terminal's baud rate
matches the baud rate of the
new communications port If the terminal doesn't work in
either port, replace the
terminal.
(Continued)