I recently bought a LaserWriter II-NTX logic board (Apple P/N 630-0158 with 8-out-of-12 SIMMs populated)
My crazy plan is to bring it up without the rest of the printer, so I can chat with the PostScript interpreter.
The LaserWriter II Repair Manual spends almost no time on the logic board.
(On the outside are "the usual connectors:" Serial, SCSI, LocalTalk, and the DIP switches)
On the inside, there is exactly one connector
(J18 - a grey 16x2 shrouded male header, in the photo indicated by my needle-nose pliers).
Every internal I/O signal goes to this connector plus power.
The $6,400 questions (roughly the original retail price of this printer) are
a) What are the pin-outs for this connector?
b) Will the board still respond to the serial port if it fails the self-test? (e.g. when the rest of the printer is like totally not there)
c) Anyone out there know how I can "fake it out" into believing that the rest of the printer is there and functioning?
My crazy plan is to bring it up without the rest of the printer, so I can chat with the PostScript interpreter.
The LaserWriter II Repair Manual spends almost no time on the logic board.
(On the outside are "the usual connectors:" Serial, SCSI, LocalTalk, and the DIP switches)
On the inside, there is exactly one connector
(J18 - a grey 16x2 shrouded male header, in the photo indicated by my needle-nose pliers).
Every internal I/O signal goes to this connector plus power.
The $6,400 questions (roughly the original retail price of this printer) are
a) What are the pin-outs for this connector?
b) Will the board still respond to the serial port if it fails the self-test? (e.g. when the rest of the printer is like totally not there)
c) Anyone out there know how I can "fake it out" into believing that the rest of the printer is there and functioning?