Lj 4350dtn

[murphy]

I need a part number for the firmware chip that plugs into the top slot in the Formatter Assy. I don't have a Service Manual for this particular printer and any help would be appreciated. Thanks..Murphy

[redcow]

No part number. The firmware DIMM is soldered to the formatter. It is not replaceable in the field.

[murphy]

RedCow,
If I remove the chip that's in slot 1 from a known good formatter Assy., and place it in slot 1 in the printer that's not booting up...the printer will then work. Boot-up, do a test print, the display will work etc, ...what I'm after is the identity of the chip that's in slot 1 from the known good printer. It looks to be wider than what I've normally seen in the other slots on the formatter. Is it just another species of memory chip ? Thanks


Murphy

[cs_steve]

First, are you sure it's a LaserJet 4350DTN ... if it is a 4350 series, then there is no DIMM chip as RedCow says...

So I believe you're saying without this chip present, your printer display is completely dead ?

Normally there are model #'s , brand markings, and memory sizes listed on small labels on these chips ... a lot of times if you try typing various combinations of these names & numbers into Google, something will eventually come up referring to the chip you have ...

[murphy]

That is correct..without the chip in the #1 slot, there is no display. It will not boot up....of course, without the display, I can't tell what it's doing..any suggestions regarding this ? I took the HP number off one of the chips that worked and ordered it through my parts system and they tell me that it's an invalid part number. I may do as you suggest and google the number and see what shows up. Thanks for all the replies... Murphy

[redcow]

It's the memory that you are removing.
You said in your 1st posting that you wanted the p.n. for the firmware chip that plugs into the formatter.
I replied that there is no p.n., because it can't be field replaced.

At that point you never said you removed the DIMM from another printer. If you want a DIMM p.n.

48MB.....q6007-67951
64MB.....q2625-67951
80MB.....q6008-67951
96MB.....q6009-67951
128MB...q2626-67951
256MB...q2627-67951
512MB...q2628-67951


file:///C:/DOCUME%7E1/Paul/LOCALS%7E1/Temp/moz-screenshot-3.jpgfile:///C:/DOCUME%7E1/Paul/LOCALS%7E1/Temp/moz-screenshot-4.jpg

[murphy]

Thanks for the P.N.'s Redcow. That may be what I need ...Murphy

[murphy]

Received the memory DIMM today and that's exactly what the printer needed to work. It now boots up, has a display & prints. Thanks for all the information. Murphy