It is possible to mount a reset switch and connect it to the SX-64. This document details the way I handled the situation.
I mounted a momentary contact switch in the storage box for the SX-64, right above the disk drive. I strongly recommend removing the box for this operation.
The removal is accomplished as follows.
1. Facing the back of the SX, remove the two screws in the top corners. Also remove the four screws (two on each side) that hold the side trim strips. The side
trim strips will then slide out towards the back of the computer.
2. On each side, remove the three small screws that hold the top on the computer.
3. Looking down at the top of the storage box and disk drive, you will see two screws on each side that hold the drive in position. Remove these four screws.
This will free the storage box and drive as a unit.
4. Lift the drive far enough to remove the two screws (one on each side) that hold the storage box to the drive. Be careful in lifting the drive as too much
force could break one of the wires running to the drive.
5. Remove the storage box from the drive unit and lower the ive back into the computer for now. The storage box is held to the drive by two plastic pins. You
should be able to move the metal plates far enough to free the box using only your fingers.
6. Drill a hole above the plastic pin on the right side (as you face the open end of the storage box). This is where you will mount the switch. Trust me, there
are three extra holes in my computer to prove this is the best place.
7. Mount the switch in the hole and connect a wire to each of the two contacts on the sw ch.
8. Remount the storage box on the drive and remount the drive in the SX.
9. Route the wires over the storage box to the Cartridge board which is mounted right behind it.
10. Remove the screw on each side of the cartridge board. Note the numbers painted on the board near the cartridge socket. One side of the socket (top) is
numbered 1 to 22. The other side is numbered 23 to 44. We will be interested in numbers 23 and 25 (A and C in the PRG). Lift the board and turn it over.
11. You will 'tack solde the two wires to pins 23 and 25 on the bottom of the cartridge nboard. Solder one to each pin, and make sure no solder touches
adjacent pins.
12. Remount the board on the computer.
13. Replace the top on the computer, and replace the three screws on each side. Replace the side trim strips and replace the six screws on the back of the
computer.
14. Sign on and drop me a note saying all went well.
