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ASSEMBLY IDENTIFICATION

There have been 4 different drive assemblies used in the dual disk drive models 8050 and 8250. The various suppliers are listed, along with the respective PCB assemblies used in these units.

TYPE   DRIVE # ANALOG # DIGITAL #
Micropolis 8050 8050031-01
8250023-02 		8050006-01 8050002-01
  8250 8250016-01 8250023-01 8050002-04
Microp Safari 8050 8250039-01 8250023-02 8050002-04
  8250 8250039-02 8250023-01 8050002-04
Tandon 8050 8050047-01 8050044-01 8050002-02
  8250 8250015-01 8050044-01 8050002-03
MPI 8050 8050059-01/02 8250023-03 8050002-05
  8250 8250029-01/02 8250023-03 8050002-06

Please note that the analog boards vary with the drive assembly but the digital board is the same PCB with ROM, CONTROLLER and JUMPER changes.

DOS/CONTROLLER ROMS FOR
DIGITAL PCB #8050002

DESCRIPTION PCB PART NO. DOS CONTROLLER ROMS
  UL1 UH2 UK3
2.5 Micropolis 8050002-01 901482-07 901482-06 901483-03
2.5 Tandon 8050002-02 901482-07 901482-06 901483-04
2.7 Tandon **8050002-03 901887-01 901888-01 901884-01
2.7 Micropolis **8050002-04 901887-01 901888-01 901885-04
2.7 MPI 8050 8050002-05 901887-01 901888-01 901869-01
2.7 MPI 8250 8050002-06 901887-01 901888-01 901869-01

** PCB part numbers 8050002-03 and -04 are stocked with the appropriate jumpers for use in an 8250. Before installing in an 8050, remove the two jumpers.

The 8250 jumper locations are illustrated on the PCB layout drawing on page 23.

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This page has been created by Sami Rautiainen.
Read the small print. Last updated June 08, 1998.