asked Aug 26, 2012 at 1:37pm
Hp HP LaserJet IIIP+

HP Laserjet IIIp - stuck in 05 Self Test

Please help me save my wonderful IIIp.

After power-up, the display shows the normal "05 Self Test" message. Except the message just does not go away. Of course, the printer cannot be put on-line and does not print.

I did manage to make it go past this once recently when I powered it up with the on-line button pressed. However, that was only once so it might have been unrelated.

If you have a memory card installed in the back of the printer, try removing it and then power it on.
by moe on Aug 27, 2012 at 10:10am Add comment
I have tried posting to this thread several times, but the posts don't show up ... so one more time:

I don't see any place where a memory card would plug into at the back of the printer. Eveny if I remove a plastic panel held by two screws, I only see a parallel and serial port.
by HH on Aug 29, 2012 at 5:42pm Add comment
Back panel - 2 screws. Lower it and you'll see a metal plate with green handle. Remove the screw on the top left and loosen the 2 screws at the bottom. Remove plate. The memory cards are on the top right. Remove and install it with power off.
by moe on Aug 29, 2012 at 9:06pm Add comment
Thanks for the instructions. Followed them. Re-seated the memory card. Unfortunately, it did not help. The printer is still stuck in "05 self test". Any other ideas? - HH
You weren't supposed to reseat it. You were supposed to remove it and power the printer on and see if it went to ready. If it does, then the card is bad.
by moe on Aug 30, 2012 at 12:33pm Add comment
OK. Removed the memory and put the printer back together without it. It got past the self test to ready. There was one memory card in the printer - HP P/N 33475-80011. I believe this is 2MB. I see a few places on the Internet that sell them. Can you recommend a reliable supplier? Do you sell them? I assume I can put in two of these cards for the total of 4MB. Right?

by HH on Aug 30, 2012 at 9:18pm Add comment
We have some boards in stock. Probably can supply you with one 4mb board as that is the maximum it can take. Email me by clicking on my name for pricing and ordering info.
by moe on Aug 31, 2012 at 10:26am Add comment
I have received the new memory board. Unfortunately, it does not help. The same thing happens with the new board: when the new board is in, the printer is stuck in 05 self test. When I take the board out, it proceeds to Ready.

Any other ideas? - HH
The only other possibility would be the formatter board it plugs into. I've never seen one do that, but I guess anything is possible. We likewise have formatter boards available, but it's a bit more work to replace. You have to remove the cover. Formatter assembly is on top. Then you have to take the metal cover off of it and remove the board to replace it. The printer does not need memory to work. They originally come without additional memory. You only need the memory if you're doing large complicated jobs like PDF files.
by moe on Sep 5, 2012 at 9:22am Add comment
That is my problem, goes to 05 self test with all leds off, does not respond to any key press. Bought it new back in 1989 or so, been a great printer, reluctant to give up on it.
by florabalance on Sep 25, 2012 at 1:24pm Add comment
Same advice. If there is any plug in memory, turn the printer off and remove it. Also remove the JetDirect card from the back if there is one installed. Then power up and see if it goes to Ready. We have lots of HP4 formatter boards in stock. The formatter is where the memory plugs in. It is located under the plastic panel on the right side. The panel has a couple of push latches at the top and just comes off after they are released. The formatter is under the metal cover that is now visible. - moe
removed the one memory card, (btw the memory on the laserjet 4 is accessible via right side).

Powered up went to ready for 10 minutes or so then went 05 self test again.
by florabalance on Sep 26, 2012 at 3:10pm Add comment
In that case, it would have to be a defective formatter. Click on my name to email me for pricing/ordering info.
by moe on Sep 27, 2012 at 9:25am Add comment