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Add note about tightening nuts after aligning PCBs

Dave 2022-07-29 00:07:00 -05:00
parent ff689ba25d
commit 7c04dd9b5d
1 changed files with 12 additions and 4 deletions
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16
apple-ii-notes/apple-ii-notes.md

@ -82,13 +82,16 @@ the torsion-box structure, along with the soldered-in keyswitches.
[[images/aligner-assembly-spacers.jpg]]
3. Fit the upside-down PCB over the screws to complete the aligner-spacer-PCB sandwich.
3. Fit the upside-down PCB over the screws to complete the aligner-spacer-PCB
sandwich.
[[images/aligner-assembly-sandwich.jpg]]
4. Secure the screws by installing lockwashers and hex nuts on the back of the
PCB. Tighten the hex nuts with sufficient torque to flatten and fully engage
the lockwashers.
PCB. Lightly finger-tighten the nuts just enough to stabilize the assembly,
while allowing adjustment of the alignment if needed when installing
switches.
[[images/aligner-assembly-complete.jpg]]
@ -105,7 +108,12 @@ the torsion-box structure, along with the soldered-in keyswitches.
[[images/keys-boundaries.jpg]]
2. Install the rest of the keys, filling in the rows between the "boundary" keys.
2. It may be necessary to adjust the alignment of the main PCB and aligner to
ensure the keys snap in place smoothly. At this point, tighten the hext nuts
with sufficient torque to flatten and fully engage the lockwashers.
3. Install the rest of the keys, filling in the rows between the "boundary"
keys.
Notes:
- I like to solder the switches in one row at a time. That way, it's harder to miss a lead than if all the switches are installed before soldering.