Question about HP LaserJet 1200 Printer

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HP Laserjet 1200 - continuous blinking yellow light

Hi - Please Help. I have an HP 1200 laserjet printer. It was working fine until an envelope got jammed inside. I pulled it out and now I can't get the printer green light to come on when I power up - and when I push the "on button" - the green light comes on but momentarily - then goes to blinking yellow - and the motor does not seem to turn on as it should when I power up. So far I have unplugged the power for 5 min and more, unconnected the computer cable, checked for any loose paper in paper path, changed toner cartridges, pulled off left cover and tried to reseat the flat ribbon at the bottom by pulling the connector out part way and releasing the ribbon and then reinserting it and pushing connector back in, all to no avail.

I read on similar posts that the printer may still think I have a jam due to sensor flags. I can see no loose scraps of paper. I do not know what the sensor "flags" look like. One post said to check in the back for the "exit flag" - what is that?? Can someone please give me enough of a detailed explanation of what to do next and what it is I should be looking for. Thanks - MJ

Posted by Anonymous on

  • kelly162 Mar 26, 2009

    Same problem, but nothing was jammed. Just stopped printing.

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Joe Fine

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A flag is a little plastic piece that is hinged and goes in between a sensor and a light source. They use a ton of them in printers. It actually looks like a flag, about 1/8th inch square that can move in between the sensor parts. It's possible that it broke when you took the envelope out. Most likely it's the paper exit sensor in the fuser. They can break easily. If so, then you'll have to get the sensor flag or a whole new sensor. Check with a local repair shop. They should have the sensor and can install it in a jiffy.

Posted on Oct 20, 2008

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1 Answer

How can i print an envelope


Instructions for printing envelopes can be found on page 64 of the user manual. If you do not have a copy, download one from here:
http://h10032.www1.hp.com/ctg/Manual/bpl10395.pdf

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Hi,Make sure you got every single piece in there, and if you can't get it to work, just hard reset it. Unplug it from the wall wait 5 seconds, plug it back in. Should be good as new.


The LaserJet 1200 has two paper inputs, a regular paper tray and a priority input tray that is used for envelopes, labels and transparencies.
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