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I am in need of a 08757-60066 mother board for a 8757C. The 8757C that I bought cheap had a CPU battery leak and has made a mess of the motherboard. Before I remove, clean and rebuild the traces on

Replacing the ZZ1000 - My Summary. A high-voltage zener will add a lot of drift. It's a hassle to ovenize it. Nine 9V zeners is better but still pretty bad. To meet spec you have to use what HP used,

Hi from down under. From memory I used an 8.2K 1 watt resistor as that is what I had on hand. Also placed 68V and 14V zeners in series to make the necessary 82V level and again this is what was in

Hi: My HP 4050N with Duplex option got erratic so, after some research, got an HP LaserJet Pro M501DN (with Duplex and Networking). After some problems that were fixed by upgrading the printer

Always thought it was funny that the HP 8150 and the Lexmark Optra N are almost exactly the same - only the control panel is different. [hp_agilent_equipment] <hp_agilent_equipment@...>

Depends on whether it's been rehabbed. Think the fuser is rated for 60k. Service manual shows intervals. The bay shows many units for sale with 200k+. Starting at $200. Think I paid 75$ for a complete

Okay I got the page count.? It's 56110.? Is that a high or low figure? Bob

Its been many years since I worked on a 141 but it seems to me it has an astigmatism adjustment in it. Listed in the handbook somewhere. Correcting this effect is what its for. You need to juggle

Hi All, On my recently acquired HP-141T, 8554B and 8552B plugins, I noticed that the trace has a sort of vertical thickness to it, as though someone is drawing the traces using a calligraphy pin

Hi Arie, I will definitely try that first, removing the board does look like a hassle. What value of resistor did you end up with for R21 (5.4k is stock)? Thanks very much, --E

This one does a better job with the sub models, including the second test page: http://cholla.mmto.org/computers/printers/hp4.html

http://research4.dfci.harvard.edu/ben/help/how_to_find_ printer_information.htm Take care! One of the settings in this menu tells it to continue printing test pages forever............................

How do you find the page count on an LJ4? Bob

Have parts and toner. Just like having several of one piece of test gear. Swap parts, keep it running. As others have concurred, commercial equipment used in a home business lasts and lasts and lasts.

Hi Norm, Why (do you need a laserjet 4), may I ask? ? Dan

Has anyone here done a Calibration on a 8082A, the manual says it needs a 15265 test box ? Gary Neilson

hi cliff,,,,good to hear from you...both numbers are in my phone now,,not too good last few days so will get back to you..with mail info on 10 ghz,,,soon as poss...have stopped ..yahoo groups...i had

Call planet Surplus, New Smyrna Beach, Fl, ask for John, tell him Dennis sent you, 386-847-8806, Remember seeing some on the shelves 18ghz??

Working on another fault in this supply..... an idea surfaced that might cure this problem. Neon tubes run in the dark eventually become difficult to strike due to the "shortage" of ions and free

I don`t think its a NE2 used as the voltage reference in the 141T psu pcb, I think its a genuine 82 volt reference tube with good TC. Its a pity they didn`t include a little speck of radium or similar