Caple C871i Manual de usuario descargar pdf (Pagina 203)

Apple II Computer Info

IIgs version.

TOOLS & MATERIALS NEEDED: Soldering iron and rosin-core solder;

wire cutter and wire-stripping tool, philips-head screwdriver;

electric drill; brown corregated cardboard, adhesive glue (e.g,

"Liquid Nails" or equivalent non-conductive adhesive), heat-

shrink insulation for AWG-18 wire: 3/16" diameter prior to

shrinkage, DC voltmeter.

1. TEST both power supplies to verify that the IIE unit is GOOD and

that the IIgs unit is BAD.

2. With power cord disconnected, remove the case=screws and open the

two units.

3. Inspect the FUSE in the IIgs unit. It is soldered to the board :-(

If fuse is blown, replace with a fuse of the same amperage. Apply power

and check voltages at the Molex-7 nylon plug. If unit works, then close

up the box --- you're done! If fuse blows again, then proceed to step 4.

4. Cut the colored output wires: For IIgs unit, cut them NEAR the board;

for IIe unit, cut them near the plug. This will allow wires of the

finished unit to remain relatively long. AC plug to be DETACHED from the

unit in this and in the remaining steps.

5. IIgs unit: near the AC switch/socket end, notice where the brown (live)

wire and blue (neutral) wire are soldered to the board. But both wires

close to the board. Detach the green wire (ground) from its bolt on the

inside casing.

6. IIe unit: Find the brown (live) and blue (neutral) AC wires; cut those

wires, leaving the wires that attach to the circuit board as LONG as

possible. These wires are located near the switch/socket end of the

unit.

7. IIgs unit: remove the philips-head small screws that hold the

circuit board to the casing, and lift the circuit board out.

8. IIe unit: remove philips-head small screws; lift the circuit board

out.

9. Hold the two circuit boards side by side. Notice that the IIgs version

is LONGER than the IIe version. Notice and compare the locations of the

holes for the mounting screws on the two boards. Near the "switch-socket"

end, both boards have two holes. Midway down the length, on the

"starboard"

(right side), the mounting holes are slightly misplaced. Using a 3/16"

drill, drill a hole on the IIe circuit board slightly "forward" of the

present hole, so that the bolt will be positioned correctly with its

barrel-nut on the IIgs inside casing. (The drilled hole will pass through

a non-critical portion of the board.) Clean away any drill filings.

10. The IIe circuit board will be attached wiith only three bolts inside

the IIgs casing. Check that it will fit correctly by sliding the board

into the IIgs casing. Redrill the midway-positioned hole if necessary,

removing the board from the casing while doing the drilling.

11. With the circuit board removed, cut to size a piece of brown

corregated cardboard to fit in the "forward" 2/3 length of the casing.

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 203 of 572

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