Start with checking the serial number label and look for the ‘B’. If it’s there, as I suspect it will be, you don’t have erase lamps. You’ll need to replace the High Voltage Power supply.
September 30, 2012
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September 10, 2012
Today, let’s talk about some common problems with HP printers and how to fix those problems at minimal cost.
If you’ve been following this blog for a while, you know that I think HP machines are some of the best built printers out there. And, I think it’s a shame that companies replace their HP printers with other products that may not last as long. I recommend taking the time to find out what is wrong with your printer and what it would take to repair it, before deciding to replace it.
That said, here are some of the service issues I’ve come across in the last several months with some of my customers and their HP printers.
April 18, 2012
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We recently received a good question via email. Here’s the Q and Brian’s (our Lexmark Tech Blogger) response. Any one else have a perspective to share on this problem? Please post a reply if you can help.
Question: A number of my customers are still using T63X printers in their insurance and pharmacy businesses. I have convinced most of them that regular service and genuine Lexmark toner are the answer to longevity and few problems. I have a T634, 500 sheet, in an insurance office that is just over 350 k pages although it has not had a good service history. It constantly breaks the spring tab from re-drive assembly redirector 99A1857. Three so far. I have replaced the fuser unit with a reman Lexmark unit and checked the flags for jams, the output guide for toner buildup and made sure it is genuinely clean and straight. Last one lasted 3 months but it did it again. I have replaced the entire redrive assembly as well as just the redirector part and spring. Well over thirty years in the computer environment so I trust myself but feel I am never too old to learn or teach what I know. Any ideas on this one?
Response: You didn’t mention whether it had a mailbox installed so I’m assuming it doesn’t. So….
Since the only time that diverter is used, to the best of my knowledge, is when there is a mailbox installed, and after consulting with my learned colleagues, I have to say that there is some human interaction causing the problem. If there is a paper jam at the back door and the user can’t move the printer to get at it they might be yanking a little too hard in the wrong direction, as end users are known to do….
If they’re leaning on the re-drive cap the diverter can’t pop loose and either that stop tab or the hook would break off.
Something to look into would be the Diagnostic Menu (page 3-1) and print the error log (page 3-7). It only keeps 12 errors but it should tell you if there have been ‘Jams at Rear Door’.
If it happens to the loaner you put in place you’ll have your proof.
As far as construction of the assembly goes, the placement of the gears for the output rollers in front of the diverter prevent that drive belt from rubbing and causing any damage. The spring isn’t strong enough to break the hook. The hook and tab are protected during removal and installation. When it’s fully activated the diverter is stopped by the re-drive assembly itself so over extension shouldn’t cause the breakage.
Anyone else have any ideas? Thanks!
March 6, 2012
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The HP color laserjet 4600 series machines are a perfect example of why HP has become legendary for their line of laser printers. In today’s market, while this is not one of the quicker machines out there, its high volume print cartridges, durability, and ability to handle any job an end-user can think of makes this printer series an office favorite. However, with its age the laser scanner optics are getting a build up of dust and debris on the mirrors and lens. While the light and faded print doesn’t happen as quickly and is not as apparent on this model as it is in the HP color laserjet 2600 and 3000 series, it still needs to be addressed.
In this article I will discuss what you can expect when light or faded print starts becoming an issue in the HP color laserjet 4600 series, how to troubleshoot the problem, and how to resolve the light or faded print issue when it has to be fixed. Continue Reading