Joe's KeyMaker 9A USB
I2C connector I/O pins diagnostics
Hopefully you will not need to use this,
however if you suspect your KM9AUSB board's I/O has been damaged, this
will reassure you that it is not or confirm your worst fears.
The IO pins can be protected if you
want the freedom to make serious mistakes..
Read More on Protection.
Access to Diagnostic is from the main
menu, Command 7
Type command 7
Type command 1
Time to make the connections.
Pay attention, the connections MUST be
made correctly else the test will fail when in fact the IO pins are OK.
The supplied 4 way cable is used, the end
with all wires together in one header is used first, 4 way wire is
plugged in over the KM9AUSB I2C connector, RED wire goes over the VCC
pin
the single end of the YELLOW wire is plugged in over
the pin labelled 3 on the KM7 board
the single end of the WHITE wire is plugged in over the pin
labelled 2 on the KM7 board
NOTE: RED and BLACK wire single ends are NOT
connected.
in summary;
SCL is connected to 3
SDA is connected to 2
VCC and GND are NOT connected to anything else.
We are ready to conduct the test - type
in Y for yes
the test can result in PASS
or FAIL
If the test returns FAILED and you are absolutely
certain that you have connected the wires for the test correctly, that
confirms that your KM9AUSB board has been damaged.
Read the page for Replacing
damaged KeyMaker board
Disclaimer
I make no warranty that any of my
information is correct, or safe, or does or does not breach any warranty
clause, or anything else, it is up to you to decide if you will
follow all or any of the instructions to recover the Supervisor Password
from a TP. It is up to you to decide, I am not responsible for the
results or for any consequential or incidental damages whatsoever.
