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, let's say a good 2meters long total, width of 4mm.

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

Links of belts:

Neolt NED 303