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- VTCRESET.TXT - Adding a reset to your Visual-1050
-
- /\ rear edge of board
- |
- _________ |
- -| |_| |- |
- -| |- |
- -| |- |
- -| |- 5.7"
- -| |- |
- --------*-| |- |
- | -|________ |- |
- | \/
- | U50<--------2.2"--------------->
- | r
- / + ______ - i
- switch-> / ____| |___ g
- | | |______| h
- |__________________________| t
- C78
- e
- d
- g
- e
- If you're the type who likes to expriment with your 1050, as programers are
- apt to, you probably wished you had a reset switch for those times you've
- had a system crash. Well, above is a diagram that shows what I did to add
- one to my machine. Be warned though, if you do this, you may void your
- warranty (Ha! Ha!).
-
- There are 4 screws on the bottom of the main (drive) unit, they are seated
- in deep holes. Remove these and tilt the top cover up and back. On the
- right side of big circuit board, about 2.2" from the right edge and about
- 5.7" from the rear edge, you'll see U50 printed on the board. To the rear
- and left of this point is the U50 chip. To the front and right is an axial
- lead capacitor, mine has a blue finish; it looks like a small can with a
- wire sticking out of each end.
-
- Attach one wire each to the chip, at the pin indicated, and to the + side
- of the capacitor. I soldered mine directly to the components. Bring these
- wires to the outside of the case; I found a gap at the parallel connector
- that was big enough to pass the wires through. Then attach the wires to a
- normally off switch, one made for momentary contact is best. And that's it.
-
- Now when you find you can't reset you're machine from the keyboard, just
- hit the switch; it only takes the briefest contact to reset. Of course, you
- should place a bootable disk in drive A before you do this because this is
- a cold reset. The advantage over turning the machine off, of course, is
- that you don't shock your components.
-