Joe,
here are the instructions for the 3pjs (the site says to use these for the 3pj also):
1. Call the Set-Up mode screen
by pressing the UP and
DOWN keys simultaneously
at the initial screen.
2. Call the Model Reset function
screen by pressing the UP or
DOWN keys in function map
order.
3. (Model memory reset)
Reset the currently called
model memory by pressing
the + and - keys simultaneously
for about one second.
When reset is complete, COMPLETE
blinks on the screen.
4. At the end of adjustment,
press the UP and DOWN
keys simultaneously. Or
press the DIRECT key twice.
(The display returns to the initial
screen.)
This functions resets the contents of the currently called model memory to the initial
value.
However, it does not reset the PCM/PCM select, total timer, lap memory, timer time,
contrast, and audible alarm tone settings.
Dan.