Osborne 1


Osborne 1 Teardown
Technical Manual
Field Service Manual



Double Density Support Board



Analog Board

Power Supply

Capacitors List

Floppy Disk DriveS

Both drives are manufactured by Micro Peripherals Inc.

There are small differences between both drives. Drive B is labeled as model 51M manufactured in November 1981.

Drive A is model 51SM, manufactured in July 1982. The only difference seems to be that it has several extra holes in the metal housing to tie the cables.

Both drives have the same analog boards, however drive A has the cable termination resistor ladder installed.


Power Connection and Fuse

Boot Floppy Disk


Some Dirt

The leather handle completely disintegrated.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s