Every once in a while I will get called about, or notice while I am onsite at a customer location, an issue with an HP LaserJet printer where the image on the page has shifted to the right, or to the left, or up, or down. Simply put, it’s not printing where it should be!
It’s pretty easy to spot this when you print the configuration page. The rectangular border around the edges will not be centered on the page. In theory, if you fold the paper in the corners on the box, the lines should line up with each other.
There’s a pretty easy fix Continue reading
A few days ago I was called out to work on a CM4540 that was getting a 49 Service Error. The customer called me and explained that they had already tried to clear the error by turning the machine off then back on but the problem came back. I advised the customer to remove the communication cable and reboot the machine to see if the problem went away. Of course, it did, so I told the customer to delete all print jobs in the print queue and then try to print something simple like a windows test page. The next day I received another call that the problem was back and now would not go away. Continue reading
I was recently called out to work on one of these MFPs the other day, which had the 58.4 error happen over the weekend. When the customer came in Monday morning the error was on the screen. I recommend these steps to troubleshoot:
- Turn the machine off
- Make sure it is not plugged into a surge arrest, power strip, or battery back up
- Let it sit 20 to 30 minutes unplugged
- Plug it back in and try again.
If the problem still occurs then the next step is to Continue reading
I get lots of calls on the HP 9040 and 9050 models for random paper jams in the machine. Often times the customer informs me that the problems tend to happen first thing in the morning. After about a half hour fighting with the machine it starts working again, but with random paper jams every so often. The customer also notes that many times, when they get a paper jam, there are several sheets of paper stuck all over the machine so they have a hard time telling where the jam actually occurred.
The HP 9040 and 9050 machines are very sensitive in their timing. If the paper gets to certain parts of the machine a hair late it can result in a jam error (I’ve often wondered why HP made these machines so time sensitive). Anyway, I’ve seen surprisingly few problems with the paper pick up assembly other than broken paper sensor actuators. The feed rollers in these machines are well designed with plenty of rubber so they hardly ever cause feed issues.
Most of the paper jam problems are in the fusing unit.
The fuser pressure roller develops flat spots, which causes toner to build up on the hot roller and leads to paper sticking to and jamming Continue reading
In recent months I’ve seen an increase in intermittent jams related to these models of HP machines. Unlike the last ten or so years, replacing the feed rollers isn’t always doing the trick. I’ve been replacing more and more pick up solenoids for the cassette tray pick up assembly.
When the solenoid actuates, the pick up assembly engages and lowers the pick up roller. There is a foam pad on the solenoid that dampens the noise when the solenoid actuates. As the machine ages, the pad wears down and the tape underneath causes the solenoid arm to stick. When this happens, the pick up roller stays down and occasionally picks up multiple pages.
Typically, if you’re only printing one or two pages at a time you won’t have too much trouble. However, if you are printing large volumes, it can be a more serious problem. Continue reading
I recently was called out to work on an HP M4555printer that had some feed issues. Each time the feed issues seemed resolved the machine would print a few pages but then stop.
The machine was receiving information. It said ‘processing’ on the display, acted like it was going to print but then nothing would happen. Even printing internal information pages from the control panel failed to work. Also, the machine’s control panel was very slow and often times unresponsive to commands.
Whenever I see an odd problem on a new HP machine the first thing I do is check the firmware version and upgrade or replace it. It’s nice that HP has changed the way the firmware is stored and managed. However, with all the new software changes and applications, I’ve seen a drastic increase in firmware related issues.
Warning: Before you update the firmware… Continue reading
I’ve heard a few noisy M5025′s and M5035′s. Given the fact that everyone of these machines that I’ve worked on had the similar noise, I didn’t think too much of it. A few weeks ago I was called out to work on a 5200 series printer that gets very heavy usage. In the past two years the customer had put just over 400,000 prints on it. The printer was now jamming in the rear of the machine and making a grinding noise.
When I arrived onsite I noticed that the exit rollers on top of the machine were moving, but were periodically skipping. I then knew I had a gear problem somewhere in the machine. I had just installed a new fusing assembly in this same machine four months ago. Therefore, my first thought was that something went wrong with that fusing assembly. Below are the steps I followed for troubleshooting this problem. Continue reading
When it comes to protecting the investment in your printer fleet and safe-guarding the reliable printer performance your business depends on, the importance of routine printer maintenance cannot be overstated. Poor print quality and printer downtime negatively affects your users and your budget, from lost productivity and frustration, to reprinting costs that can really add up in terms of wasted resources (think toner & paper).
Routine printer maintenance is just like your car’s 35,000 mile oil change. Like your car, your printer needs routine maintenance to reduce the risk of a breakdown. A good rule of thumb — Continue reading
Recently I did a service call for a third-party company to replace an HVPS (high voltage power supply) in an HP M3035 printer for one of their customers. When I arrived onsite and printed a config page the background was so dark it was difficult to read the print on the paper. After talking to the customer, I found out that several technicians had been out there and had replaced various parts. Knowing the third-party company I went ahead and replaced the HVPS per my instructions.
After replacing the HVPS I turned the machine back on and printed a few pages. While the print looked better it was light. I checked the settings to make sure the density was set correctly and econo-mode was turned off. I turned the machine off and back on thinking that maybe a power off then on would fix the problem. To my unwanted surprise the dark background was back. Continue reading
A new customer called to have me take a look at an HP LaserJet M5025 and M5035 Printer that was donated to their not-for-profit company. The machine had been sitting for several years and when they turned it on they found that the copier function would not work. After debating long and hard they decided to spend a little money and have it looked at to see if it could be salvaged.
I arrived on site to take a look at the machine. When the machine finally warmed up I went to make a copy and got nothing back but a black copy. When I opened the lid and made a copy it was apparent the lamp was not working. I printed a config page and error log report to check the firmware and past errors recorded. Sure enough, it was reporting a 30.1.19 Scanner Error. I ran the scanner lamp test Continue reading