Caple C871i Manual do Utilizador descarregar pdf (Página 235)

Apple II Computer Info

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From: [email protected] (Dave Althoff)

Subject: Dave's Guide to ][e Keyboard Repair

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Date: Mon, 6 Jun 1994 23:13:40 -0400 (EDT)

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Most Apple ][e's use all-mechanical Alps keyswitches in the keyboards.

Some use a short-stem switch, some use a short-stem switch with an

extender, and some use a long-stem switch. In most cases, the switches

are not repairable.

Fortunately, replacement is fairly easy.

1. Remove the screws from the bottom of the ][e case, and remove the top

half of the case.

2. Scribe the position of the keyboard on the keyboard support brackets,

to facilitate reinstallation.

3. Remove the keycaps of the blown key and the surrounding keys.

4. Remove the four keyboard mounting screws, and unplug the ribbon

connector from the keyboard. At this point, I generally find it

convenient to mount the keyboard PCB-side-up on the mounting brackets.

5. Locate the two solder pads under the blown key. Heat these pads and,

using a vacuum bulb, remove all of the solder from the pins. Grasp the

exposed pins with a small plier and wiggle a bit to make sure they are

free of the board.

6. To remove the keyswitch, you must fully depress the tabs on either

side of the key stem, and lift the entire switch upward. This is the

tricky part.

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 235 of 572

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Caple C871i Manual do Utilizador Página 235

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