Question about HP LaserJet 8150n Printer
Posted by Anonymous on
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Posted on Jan 02, 2017
It is located in the back of the printer on the bottom. Remove the back
cover. With the power off, remove the formatter board by loosening the
two big screws and pulling out. Remove the plastic cover by the side of
the formatter cage. Remove the fan housing by the power connector by
removing the two screws, disconnect the cable and pull straigt out. Now
remove the big cable at the top and unwind from the high voltage ps.
Remove the white connector in the middle of the low voltage ps. Next
trace the white cable wires running from the ps to the dc controller
and remove the cable from the dc controller. Now trace the fan cable
for the fan in the front of the ps and remove it from the dc
controller. Remove all the screws which secure it to the frame and pull
straight out. Move the fan in front from the old ps to the new and
Take off the large metal side cover. Look down at the bottom of the printer. The large box is the LVPS. Remove the screws holding it and follow the wiring up to where it plugs in and pull the connectors off. You'll also have to remove the fan above the LVPS on the top right side of it. You will have to take the fan mounted on the LVPS off and put it on the replacement LVPS as they don't come with fans.
Posted on Oct 23, 2007
I would recommend replacing the PIU paper Input unit on the printer.Having repaired several hundreds of these printers this always rectifies these feed proble. The clutches can go weak as can the paper tray lift mechanics
Posted on Oct 13, 2009
CAUSE: This error
message indicates the paper present sensor flag in one of the trays
does not detect paper in the tray. This could be caused by one of the
NOTE: Follow troubleshooting steps for Trays 2 and 3 when working with the 2 X 500 sheet-input tray.
Posted on Nov 25, 2009
SOURCE: Hp Laserjet 8150.
Start by pulling out tray 2 and setting it on the floor. Next take out tray 3 and slide it into tray 2. Print from tray 2. If it works, take the tray on the floor and put it into the tray 3 slot. Print from tray 3. If it fails change the feed rollers.
Posted on Jan 24, 2010
I have a HP LaserJet 5000 with a Fuser Error code 50.1, meaning low temp. I am not a tech, but I have been repairing my own cars, printing presses, computers, printers and anything else that breaks for over 35 years. The previous fuser on my LaserJet 5000 lasted over 7 years and while I was not getting any error codes, it was not fusing laser plates as well as I liked. Until recently I had two HP 5000 LaserJets and was able to trouble shoot by swapping parts. I replace a bad DC controller board in this particular printer about a year ago. Shortly after that I replaced the fuser with a genuine OEM HP fuser and it fused great for nearly a year. A few weeks ago I had a massive paper jam in the fuser and a day later got a Fuser Error 50.1. After checking the Internet I determined it might have broken the ceramic heating element. I swapped fuser with the one in my other identical working printer and the fuser error went away. I swapped the fusers back again and the error returned, pretty much proving the problem is in the fuser. Since I am not made of money I figured I could rebuild a fuser just as well as anyone else so I went on a search for the parts, but it was like calling Area 51 and asking what they were hiding. The service manual indicated some ohms testing to be done on the problem fuser and all results came back showing all the correct readings. I knew the fuser was the cause of the error, and the parts were not cheap so I carefully disassembled the fuser to see if I could isolate the exact part that was broken. The ceramic heating element and everything else looks fine. One detail I had found odd was that the printer used to take a couple of minutes or more to heat up, but I now got the fuser error 50.1 within 15 or 20 seconds of powering it on. This made me wonder if it would even have enough time to heat up enough to know it had a low temp problem. I thought the problem might be in the part that actually measured the temp. While I had the fuser apart I found one small resistor attached to the frame directly under the main drive gear. I did an ohms test on the resistor and it showed bad. I really hate to tear my good fuser apart to swap the resistors for fear I might burn it up to, so has anyone out there heard of a bad resistor causing a 50.1 error? I found only one reference on one site about a different LaserJet with a 50.1 code because of a bad resistor, and I have no idea where that resistor is on that particular printer. I know I could have just replaced the fuser by now, but I like to learn how things work and solve puzzles like this one. I am hoping some of my info may be of help to someone and if anyone has anyone ideas or thoughts on my comments, I would love to hear them. I will go on a search for a resistor next week and see if that helps. I hope to hear from someone soon. Thanks and God bless. James
Posted on Mar 08, 2010
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Dec 04, 2013 | HP LaserJet 8150dn Printer
May 25, 2012 | HP LaserJet 8150 Printer
LASER PRINTER 8100, 8150 ERROR 57.5 code
The fan 1 or the laser/scanner fan has occurred.
Replace fan 1
Replace the D.C. controller board.
Try reseating the connector to the fan, it may have worked loose.
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Try this site
It seems they were able to fix it
Oct 18, 2007 | HP Color LaserJet 3500 Printer
Mar 15, 2017 | HP LaserJet 8150n Printer
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