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@compu_85 - do you have a pinout or datasheet of the LaserWriter/LaserWriter Plus ROMs? I can't seem to find any information about them.

I would assume it doesn’t have erasable ROMs. I’ve never looked at the controller board, but my assumption is that it was upgraded from an original to a Plus in the 80s, and never touched since. (I’ve had it 10 years now.) I’ll have a look this weekend though. If it’s not got erasable ROMs, so...

That’s amazing! Thank you for sharing these! I now really want to downgrade my LaserWriter (which was previously upgraded to a Plus). Any tips on how I should do this? I know a bit about hardware, but not about ROM dumping or burning. Is there modern EEPROMs that would be drop in replacements?

I am looking for someone with a Personal LaserWriter NT and / or a Personal LaserWriter NTR to do a test for me. Specifically, download the LaserTalk software and see if it is able to connect to the printer. Additionally, if any individuals here are familiar with the LaserTalk software, I would...

User /u/royalmailpostpak on reddit pointed out that there's a LaserWriter Pro 810 for sale in Italy at the moment.

Yes, it was the 22uF 25v capacitor on the secondary board that I replaced. It was only today I noticed that there's also a 10uF 50v capacitor on that board too, but I didn't have a replacement for that so I just left it as is. For resistor values, I don't have a picture but I did write them...

The triac and capacitor arrived today, and after replacing them in the AC PSU (which Apple call the "Power Supply Block"), I'm delighted to report that I have a fully functioning LaserWriter II! I've had this printer sitting here for over three years now, so it's great to have it finally...

The triac I'm replacing it with is the Q6015L5TP which is a 600V 15A one I'm hoping will be suitable. The optoisolator is a "S21ME4 Sharp X7" and I'm not really knowledgable enough to figure out a suitable replacement for it. If anyone knows more about this or a suitable replacement, I'd be...

I've mentioned David Given's fantastic FluxEngine before, but I wanted to alert the community that as of the most recent release, FluxEngine can now write (as well as read) 800k Mac disks. If you're not aware, FluxEngine takes a regular 34-pin PC floppy drive, and by hooking it up to a ~$10...

Yes, the AC PSU. It has a triac to control voltage to the fuser, along with a single electrolytic capacitor. The key is to Google for "laserjet ii error 50" and there you'll find a few pages of people talking about this. Some people say the triac goes bad, others talk about the capacitor, and...

I've ordered a new Triac and capacitor for the PSU, and will report back once I've replaced them. Apparently those are the most likely parts that cause this issue. Here's hoping, anyway! I ordered them about a week ago but shipping here is very slow at the moment.

I have a LaserWriter II that I've been working on today. It wasn't picking up paper at all, but after putting a few rubber bands round the pickup roller it is now picking up paper with a 50% success ratio! Not great, but I'll take it for now! I'm able to print the service test page, which is...

I vaguely remember reading in a PostScript manual from the 80s that the original LW and LW us didn't actually have quite enough ram to hold an entire page of some size. I know it can hold an entire A4 page, so it could be that it can't hold an entire letter page. I'll have to do some googling to...

Do note that the pickup rollers aren't round - they're like a D or semi-circle shape, so that when they turn they pickup the paper. I'm not sure if that affects what you're thinking of doing or not, but I though it was worth mentioning. Those thick bands look like they could be good though, you...

@olePigeon It certainly worked for me - but note it's quite fiendish to get right because of the limited access you have through the read door of the printer! You probably could take it apart and do it properly, but when I did this back in 2013 I didn't have access to the service/take apart...

I've got two Pluses (one branded a Plus, and the other upgraded to a Plus), and on both the pickup rollers went to sticky goo. I actually "fixed" one by cleaning the gunk off and then attaching a rubber band where the rollers were. Amazingly, this does the trick and it's been picking up paper...

Regarding copy protected disks, I honestly don't know as I don't have any to test - most of my existing 800k disks are user copies, not original. David, the developer of FluxEngine, does say this though: Interestingly, compatibility with the GreaseWeasel is something that David has considered:

Yup, 1.44MB "Mac" disks aren't really "Mac" at all - they're just regular IBM formatted disks, so the FluxEngine can read them fine. You will need an external power supply to power the floppy drive; also a computer running some version of Windows in order to program the PSoC board with the...

I should start off by saying that absolutely none of this is my work, I am just letting the 68kMLA community know about it. This is all done by the amazing David Given. The FluxEngine is a floppy disk imaging device that hooks up to USB on one end, and a regular PC 34-pin floppy drive on the...

I maintain the collection of HyperCard stacks on archive.org (I don't work for archive.org - I just maintain the HyperCard collection). One slightly annoying thing about the online emulator (James Friend's port of the PCE emulator to JavaScript) is that it has a bug where the PRAM values are not...