is the circuit board that is screwed to the Power Plant’s front panel.
Locate the chip puller enclosed
with the MultiWave II+ package. The chip puller will be used to care- fully remove the old microchip.
Notice the chip puller has two small prongs. Put the
two prongs of the chip puller between the chip and the socket on the left and right side. There is a small gap between the chip and the socket for you to insert the prongs of the chip puller. It may take a little wiggling of the chip puller to get its prongs under the chip.
Squeeze the chip puller together and pull the microchip straight out of its socket. It may take a tug. Pull straight back. When the old microchip pops out of its socket, lay it out of the way.
Removing the old MWII microchip from the board you removed
First locate the MWII board you removed from the Power Plant.
Using the same technique you used for removing the front panel display chip, locate the same looking chip on the separate MWII board. Note the small half moon and white dot and
how it is orient- ed in the socket. You will need to put the new chip in exactly the same way. Put the two prongs of the chip puller
between the chip and the socket on the left and right side. There is a small gap between the chip and the socket for you to insert the prongs of the chip puller. It may take a little wiggling of the chip puller to get its prongs under the chip.
Squeeze the chip puller together and pull the microchip straight out of its socket. It may take a tug. Pull straight back. When the old microchip pops out of its socket, lay it
out of the way.
Great work. You are almost done. Take a break.
Take this time to attach the anti- static wrist strap to your wrist by wrapping the clear sticky end
around your wrist like a bracelet. Remove the adhesive strip from the copper tail and attach it to an exposed aluminium surface inside the Power Plant chassis.
Installing the new front panel display microchip AND MWII card microchip Carefully open the sealed end of the sil- ver anti-static bag marked FRONT PANEL DISPLAY (you are wearing your wrist strap now, aren’t you?). Carefully remove the new processor chip from the silver bag. The chip is pressed to a small piece of black foam. This special foam protects the chip from static. Do not remove the chip from the antistatic foam at this time.
Notice that the chip has a “half moon” on one side. There is also a white dot to help identify the direction. Looking from the rear of the unit, this
dot must face to the RIGHT on the P600/P1200 and the LEFT on the P300. Note: Some P600 models may have the
display microchip aligned vertically with the half moon and white dot facing UP.
Now, carefully use your fingers to pull the chip straight out of the black protective foam. Yep, you can use the chip puller for this if you like. The key is pulling the chip straight out of the foam so that we do not bend any of the little legs.
After you pull the chip out of the foam, lay it so it rests on its legs on top of the black foam. It will look a lot like a bug - a healthy bug with straight legs. If any of the legs are not straight, use a finger nail to straighten it.
Do not rush the next step. Please read this next section again before you go on. Do you have a light shining inside
the Power Plant? Is it well lit? Do you have your reading glasses on? Just checking.
You are going to next insert the chip into the socket. Do this by grasping the small sides of the chip with your thumb and
forefinger. Now, carefully line up the legs of the chip with the holes in the socket. BE VERY CAREFUL. Only lightly press the chip into the socket at this time - just enough for the socket to hold the chip. You just want to get the legs started. Do not press hard on the chip at this time.
Now make sure each leg of the microchip is inserted in the corresponding socket hole. That’s what the little dentist’s mirror is for. You should be able to see the pins on the top of the socket with your eye. The dentist mirror will help with the lower set of pins. Most problems of MultiWave installa- tion have been found to be people’s failure to get the bottom row of legs in the socket properly. Make double sure.
When you are sure that each leg of the microchip is straight and lined up correctly, top and bottom rows, press the microchip down into the socket. The chip will seat almost flush into the socket.
Now, use the mirror again to inspect the microchip and socket. The microchip must be flush in the socket and no pins should be bent or coming out of the socket.
Install the new chip on the MWII oscilla- tor card
Next, find the second silver anti-static bag marked OSCILLATOR and replace the chip on the MWII separate board with this new one, following the same instructions for
safety and orientation as you just did on the first chip installation.
Re-Installing the MWII oscillator board Read this entire section before you attempt to replace the oscillator board.
Now take the oscillator board in your hand. Be careful to only touch the edges of the board. Notice the printed warning on the top of the board
indicating which side of the board must face the front panel. The new board must only be inserted in the correct direction.
The electronic components on the oscillator board must face forward, toward the face- plate of the Power Plant. Never insert the oscillator board so that the electronic com- ponents face to the rear of the Power Plant.
Insert the oscillator board into its socket on the Power Plant’s main board by pushing straight down. Do not rock the card back and forth.
Insert it s t r a i g h t . The board must not be inserted at an angle.
If you are working on a P600 or
aP1200, replace the
two small screws and nuts that hold the oscillator board in place.
Inspect your work
You are almost done!
Carefully inspect you work one more time before you button up. The items you want to check will be:
•The new microchip on the front panel display board is inserted correctly. Use that mirror if you need to!
