Manufacturer Alps
Model DFC642B
Density HD, DD/2D
Sides DS/2S, SS/1S
Rotation speed 300, 360
Maximum seekable tracks 841) / 83
Interface Shugart
(PC-AT compatible)
Data connector 34 position card edge
Power connector 4 pin Molex
Head movement Metal belt
Head loading Solenoid
Disk locking Lever
Known colors
 
Dark Beige
(PC-AT Gray)

Alps DFC642B

The DFC642B is a 5.25“ double sided high density floppy drive made by Alps. It uses a metal belt to facilitate head movement and locks the disk with a lever. Head loading is done with a solenoid. It uses the GEB-2294V-0 control board and the Sankyo F2SPR motor board.

Variants

DFC642B01B

Pictures

Jumper settings

GEB-2294V-0

geb-2294v-0.pdf

View PDF

Modifications

84 track seeking

Unmodified drives will not be able to seek 84 tracks. A small modification is required to enable this.

The modification can be performed by following these steps:

  1. Loosen the two screws holding the end stop of the stepper motor as pictured.
  2. Move the end stop all the the way up, away from the axle.
  3. Tighten the screws while retaining the end stop in the upper position.
1)
Modification is required