Osborne 1

Resources

Wiki
Osborne 1 Teardown
Technical Manual
Field Service Manual

Internals

Motherboard

Double Density Support Board

Display

CRT

Analog Board

Power Supply

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.

Keyboard

Power Connection and Fuse

Boot Floppy Disk

Reassembly

Some Dirt

The leather handle completely disintegrated.

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