22.
Check your work carefully up to this point. Don’t install the other ICs yet.
Initial Power-Up and Testing.
23.
Again, carefully check your work for solder bridges and open or poor joints. Make sure
you've got the right resistors in the right locations. Make absolutely sure you've got all
the polarized parts soldered in the right way around! Double check to make sure you
haven’t inadvertently swapped the voltage regulators. Fix any problems before
continuing.
24.
Just to make sure you haven't created any blatant shorts, measure the resistance
between pins 1 and 2 of J2. Do the same for pins 3 and 2. If you measure a steady
resistance of less than 100 ohms, don't apply power. Carefully check your work until you
find that short.
25.
Connect the PS04 power supply to the board using a WH01 wiring harness.
Attach the
connectors so the locking ramps engage.
Don’t connect the harness backwards! Set
your DMM to measure DC voltages of 18V or greater and apply power. Connect the
negative meter probe to J2, pin 2 or any connection labeled
PGND.
Connect the positive
meter probe to the
+18V
pin 8 shown below. You should measure very close to +18V.
