From 7c04dd9b5d6510ce32d81ac549ba9ae15ddf75cd Mon Sep 17 00:00:00 2001 From: Dave Date: Fri, 29 Jul 2022 00:07:00 -0500 Subject: [PATCH] Add note about tightening nuts after aligning PCBs --- apple-ii-notes/apple-ii-notes.md | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/apple-ii-notes/apple-ii-notes.md b/apple-ii-notes/apple-ii-notes.md index 860a99a..d391278 100644 --- a/apple-ii-notes/apple-ii-notes.md +++ b/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.