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

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  • kelly162 Mar 26, 2009

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

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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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Refer to Page 66 for printing on envelope
http://h10032.www1.hp.com/ctg/Manual/bpl10395.pdf

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When printing envelopes, you have to set tray1(the bypass tray) to handle the envelopes in the menu.
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1. Press OK.
2. Press the down arrow to select System setup, and then press OK.
3. Press the down arrow to select Paper setup, and then press OK.
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6. Press the down arrow to select the size or type.
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1 Answer

Paper jam in HP 1200 printer


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.
Paper jams rarely happen with the HP LaserJet 1200. If you can see paper sticking out of the input or output tray, try to remove it gently. If you encounter resistance or if the page tears, turn off the lights in the room to avoid exposing the toner to light. Open the toner door, which is above the paper tray, and the output door, and rotate the green levers down. At this point, you might be able to remove the jammed paper. If not, remove the toner cartridge.
Grasp the page in both hands and gently pull it free. Replace the toner cartridge and close the doors. The cartridge and the levers will slide back into place.

Hope that helps..

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I m not sure what the specification of the paper type you are using however if you are using card stock than you should use manual feed Tray and in the printer driver properties you should select paper type as Card-Stock to make sure there is no print quality issue.

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There could be a tiny piece of paper blocking the paper path or sensor. See if you can find any.

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