Kantronics KPC-2 - Page 36

Hard Reset
The
hard
reset
process
is
provided
to
re-initialize
the
TNC
to
its
default
values.
This
process
may
become
necessary
should
operational
problems
be
encountered
or
when
upgrading
your
firmware
to
a
new
version.
The
readout
specified
in
step
5
below
will
be
legible
only
if
your
terminal
baud
rate
is
300.
At
other
terminal
baud
rates,
a
reset
will
occur.
However,
no
display
readout
will
be
observed.
This
procedure
is
performed
as
follows:
1)
Remove
the
PC
board
from
the
case
as
outlined
in
the
Assembly
and
Disassembly
section,
above.
2)
Locate
the
Test/Normal
jumper
which
is
labeled
NOR
T
(normal-test).
Jumpers
are
appropriately
labeled
on
the
PC
board.
Refer
to
the
parts
location
diagram
for
help
in
locating
them.
KAM Jumper K6
KPC-4 Jumper K7
KPC-2 Jumper K3
KPC-2400 Jumper K3
KPC-1 Jumper K1
3)
Place
the
jumper
in
the
test
position.
4) Apply power to the TNC.
5)
Observe
on
the
computer
display
(your
terminal
program
must
be
set
at
300
baud):
EEPROM
INIT
OK
CHECKSUM OK
RAM OK XXXXX BYTES
REPLACE TEST JUMPER
Some
TNCs
will
not
display
the
REPLACE
message.
If
you
have
removed
the
2404
EEPROM
from
your
unit
for
any
reason,
the
EEPROM
INIT
message
will
read:
EEPROM INIT ERROR
This
is
a
normal
indication
and
does
not
indicate
a
failure
with
your
TNC.
6)
Turn
power
off.
Do
not
keep
the
TNC
power
on
for
more
than
a
minute
or
the
regulator
will
overheat.
T)
Return
Test/Normal
jumper
to
the
normal
position.
8)
Reassemble
the
TNC
and
return
to
operation.
4
©
Copyright
1989,
Kantronics,
Inc.
All
Rights
Reserved.
Version
2.85
Duplication
of
this
manual
or
the
firmware
without
Installation
Manual
permission
of
Kantronics,
Inc.
is
prohibited.