memory SIMMS on hp 6mp

[news.rcn.com]

When I started getting a plethora of error messages on my formerly-trusty
5mp I have had for a decade or so which had , I tried replacing it with a
6mp I have
lying around. (not really sure what the differences are?)

I took all memory out of the 5 and put it into the 6 just in case. On
plugging in the 6, all lights went on. no pressing buttons by the lights
would make any difference or give me any secondary error code. But I then
turned it off and now it simply wont turn on again. When plugged into any
socket. not until I took the memory from the 5mp out. Then neither memory
chip would work in the 6.

The memory SEEMS to be an ordinary SIMM, I presumed with those jumpered
leads from 69 to 72? Is there some difference or do the jumpers not need to
be there? Am I therefore replacing one printer with a virtually identical
printer with less memory?

 

[Tony]

When I started getting a plethora of error messages on my formerly-trusty
5mp I have had for a decade or so which had , I tried replacing it with a
6mp I have
lying around. (not really sure what the differences are?)

I took all memory out of the 5 and put it into the 6 just in case. On
plugging in the 6, all lights went on. no pressing buttons by the lights
would make any difference or give me any secondary error code. But I then
turned it off and now it simply wont turn on again. When plugged into any
socket. not until I took the memory from the 5mp out. Then neither memory
chip would work in the 6.

The memory SEEMS to be an ordinary SIMM, I presumed with those jumpered
leads from 69 to 72? Is there some difference or do the jumpers not need to
be there? Am I therefore replacing one printer with a virtually identical
printer with less memory?

The simms are the same in both models so they should be interchangeable.
Did you install them one at a time to see whether one of the slots in the 6MP
formatter is faulty? You might play around by trying one slot and then another,
I think (???) you can put simms in any slot.
If I recall correctly, all lights on is not a valid error code. A fatal error
is the top 4 lights on and the bottom one off.
If the simms work in the 5MP but not in the 6MP and are correctly installed
then I suspect the formatter has failed in the 6MP, unfortunately it is
different to the 5MP formatter.
You could try a cold reset followed by a NVRAM initialisation.
1. Power printer off then on, hold down the reset button for 5-10 seconds.
2. Power off then on, hold down the reset button for more than 20 seconds.
If that does not help, the formatter is probably faulty.
Tony

 

[ljb]

Just so you don't get stuck where I did when I added memory to my 6mp: with
extra memory it takes a lot longer to be ready. When I turn mine on now, I
get motor noise, then all six lights stay on for about 20 seconds. Only
then does it goes through the normal self-test cycling of the lights. The
first time it did this I was sure it was bad memory. So make sure you are
giving it enough time.

 

[Bob]

If you get the 6MP working, I need some "cosmetic" parts off a "5"...
and I likely have plenty of memory that I could trade you if you do
have a compatibility problem, or I might buy some parts outright if
the price is right - so drop me a line by email if you are interested.
Maybe we can figure something out that works for both of us.

FYI -although I'd think that they would both use the "same" memory,
there were a lot of subtle variations in 72pin memory - it might be a
compatibility issue. What I have might work in your 6MP, but it might
not. It would be a shot in the dark.

Bob