Editing Apple Keyboard (M0116) (section)

== Maintenance & Repair ==

=== Disassembly Procedure ===

'''Required tools'''
* Phillips screwdriver #1
* Plastic spudger
* Isopropyl alcohol 90%+
* Cotton swabs

'''Steps'''
# Remove six screws from case bottom
# Carefully separate case halves
# Disconnect cable from PCB (if removable)
# Document wire colors and positions
# Remove PCB mounting screws
# Lift PCB and plate assembly

=== Switch Maintenance ===

'''Cleaning procedure'''
# Remove keycap with wire puller
# Apply drops of isopropyl alcohol
# Actuate switch repeatedly
# Allow to dry completely
# Test switch operation

'''Switch replacement'''
# Desolder defective switch
# Clean PCB pads thoroughly
# Install replacement Alps switch
# Ensure proper alignment
# Solder and test

=== Common Issues ===

{| class="wikitable" style="width:80%; text-align:center;"
|+'''Troubleshooting Guide'''
! Problem !! Cause !! Solution
|-
| Key not registering || Dirty switch contacts || Clean with isopropyl alcohol
|-
| Multiple keys failing || PCB trace damage || Repair traces with wire jumpers
|-
| ADB not recognized || Cable damage || Test continuity, replace cable
|-
| Intermittent operation || Cold solder joints || Reflow solder connections
|-
| Caps Lock stuck || Mechanical latch worn || Replace SKCL switch
|-
| Keys feel scratchy || Switch contamination || Disassemble and clean switches
|}

=== Restoration ===

'''Retrobrighting'''
* Suitable for yellowed cases
* Use hydrogen peroxide cream
* UV exposure or heat acceleration
* Monitor progress carefully

'''Switch restoration'''
* Ultrasonic cleaning of switch parts
* Replacement of worn springs
* Lubrication with appropriate grease

'''Keycap restoration'''
* Denture tablet cleaning
* Avoid harsh chemicals on legends
* Gentle brushing for stubborn stains