1) Remove the 6 Phillips head screws from the back of
Handlebar Controller and place them in a safe location.
2) Carefully separate the front case from the rear case. Please
note: There are connecting pins that bridge the two case halves, one long
row at the top and a small grouping near the DIN cable jack at the bottom. Care
should be taken when separating the two case halves so that you do not bend
these pins. This is accomplished by being sure the two halves are separated
evenly, basically by not pulling one end apart and then the other.
3) Once separated, you will find two IC chips in the back
half of the case. One of these IC chips will have a version number written on
it; (example Ver.25.41). This will be the chip to replace. Please note: On one
end of this chip there is a notch to indicate which end goes which way. Note
also that the print on the circuit board also indicates the location of this
notch. Please familiarize yourself with this before removing the chip. Now
carefully remove the chip by inserting a small, flat blade screwdriver under one
side and pry up a little, then do the same on the other end until the chip comes
out.
4) Take the new chip and gently insert it into the socket
taking into account the aforementioned notch. Be certain that all pins are in
their respective position and push the chip straight down until firmly seated
into the socket. Again, check that all pins are in the socket.
5) Reinstall the front case onto the back case making sure
that all bridge pins mate to their socket before pushing the two halves
together. It may be necessary to help the DIN cable jack into the hole in the
back case to completely mate of the two halves.
6) Reinstall the six screws into the back and snug them. Do
Not Over-tighten!
7) Reconnect the DIN cable and turn on the power. When the
program first starts, the Handlebar Control will display the new version number
in the LCD display after its display of all 8’s. The unit is now functional.
