Editing Amstrad CPC 664 Capacitor Replacement Guide (section)

== Drive Logic Board Recap ==

The drive logic board on the Hitachi 3-inch mechanism is a small two-sided PCB clipped or screwed to the top of the mechanism. To recap:

# Remove the drive from the system unit.
# Remove the drive's metal top cover (2&ndash;4 screws).
# Inspect the logic board for leaked electrolyte. If present, clean thoroughly with IPA before recapping.
# Note the polarity of each electrolytic with a paint pen.
# Desolder and replace each electrolytic with a low-ESR 105 °C equivalent of equal capacitance and equal-or-higher voltage rating.
# Inspect the head pre-amp area for any solder bridges introduced during work.
# Refit the metal cover and the drive to the system unit.
# Test with a known-good disc.