Description

PSU is an unregulated transformer, input fuse 250mA, output fuse 1.6A, around 19VDC unloaded

There is two steppers for the axis, pen lever is selenoid activated.

Each axis uses a UGN-3119U Hall-effect switch to detect homing.

Steppers are standard NEMA16 with a length of 33m, the shaft is 5mm then apx 3.3mm…

Fonts sets are builtin:

There is a memory of 1987 characters arranged in 10 pages, stored in a Dallas DS1225Y SRAM, unsocketted.

They will probably be cooked and not smoothy-circle, I am attempting to match new ones.

Everything in mm unless specified in cursed “.

Model	Length (OD)	Length (teeths*pitch)	Pitch	Teeths	Width	notes
Original	77	73,152	2.032 ?	36	~6.4
288MXL025 (Gates)		73.08	2.032	36	6.35	imperial belt

Model	Length (OD)	Length (teeths*pitch)	Pitch	Teeths	Width	notes
Original	96	91,44	2.032 ?	45	~6.4
360MXL025 (Gates)		91.44	2.032	45	6.35	imperial belt

There is also 4 open ones, two for each axis, width of 4mm, 2x21cm, 2x58cm, for a total of 158cm (1.58m).

They seems to match the profile of the two other axis so let's assume they are MXL too, but in 4.76mm width.

Links of belts:

Neolt NED 303