Editing Apple Desktop Bus Mouse II (section)

== Maintenance & Repair ==

=== Disassembly Procedure ===

The disassembly process varied by manufacturing variant:

'''Taiwan models (two screws):'''
# Locate screw positions under label edges
# Pierce label or carefully peel to access screws
# Remove Phillips screws
# Separate case halves gently

'''Later models (single screw):'''
# Find screw under serial number sticker
# Remove single Phillips screw
# Release internal clips carefully
# Separate case halves

=== Common Maintenance Tasks ===

==== Ball and Roller Cleaning ====
'''Required tools:''' Isopropyl alcohol (90%+), cotton swabs, compressed air

'''Procedure:'''
# Rotate ball retainer counterclockwise to remove
# Extract tracking ball
# Clean ball with isopropyl alcohol
# Clean encoder wheels with cotton swab
# Remove debris from encoder slots with compressed air
# Verify roller spring tension
# Reassemble in reverse order

==== Microswitch Replacement ====
'''Compatible switches:'''
* Omron D2F-01, D2F-01F, D2F-01F-T
* Panasonic EVQ-P0E07K (light touch)
* Panasonic EVQ-P0D07K (firm touch)

'''Replacement procedure:'''
# Disassemble mouse completely
# Desolder failed switch (note orientation)
# Clean PCB pads with flux and wick
# Install new switch maintaining alignment
# Test operation before reassembly

==== Cable Repair ====
'''Common failure points:'''
* Cable entry to mouse body
* Strain relief area
* Near connector

'''Repair options:'''
* Splice repair at break point
* Complete cable replacement
* Reinforcement with heat shrink tubing

=== Troubleshooting Guide ===

{| class="wikitable" style="width:80%; text-align:center;"
|+'''Common Issues and Solutions'''
! Symptom !! Likely Cause !! Solution
|-
| Erratic cursor movement || Dirty encoder wheels || Clean wheels and ball thoroughly
|-
| No cursor movement || Broken cable, failed encoder || Test cable continuity, check encoders
|-
| Button doesn't click || Worn microswitch || Replace switch with compatible part
|-
| Intermittent operation || Cable damage, dirty contacts || Check cable, clean connectors
|-
| Double-clicking || Switch bounce || Replace microswitch
|-
| System doesn't recognize || ADB port issue || Test on different port/system
|}

=== Preventive Maintenance ===

'''Monthly:'''
* Clean ball and check movement
* Inspect cable for damage

'''Quarterly:'''
* Deep clean including encoder wheels
* Check button operation
* Clean ADB connector

'''Annually:'''
* Full disassembly and cleaning
* Inspect PCB for damage
* Test on known-good system