I have an HP Color LaserJet 3700 that has decided to stop printing yellow. I have changed the cartridge several times and have run all of the diagnostics/calibrations many times with no success. I want to say the problem started a year ago when the black cartridge completely ran out and the printer refused to function until the black cartridge was replaced. The printer has never been the same since then. Any ideas?

check yellow cartridge to see if toner seal tab has been pulled out

You can find the user's guide here which lists all the parts and supplies. Here's the cartridge information from the manual:

• HP Color LaserJet black print cartridge Standard black cartridge CE260A
• HP Color LaserJet black print cartridge High-capacity black cartridge for CLJ4525 models only CE260X
• HP Color LaserJet cyan print cartridge Cyan cartridge CE261A
• HP Color LaserJet yellow print cartridge Yellow cartridge CE262A
• HP Color LaserJet magenta print cartridge Magenta cartridge CE263A

You can use the HP numbers to look for original or after-market replacements.

This printer does not use ink cartridges. It is a laser printer and uses toner cartridges. Yes, one or all three toner color cartridges maybe running out of toner.

try another yellow cartridge,because if u are using generic cartridges from the same vendor,they might be defective.

It's possible that the toner in the cartridge is not evenly distributed. You can redistribute toner if you gently shake the cartridge from side to side, then reinstall it to see if this affects performance. Please also see this article.
You might wish to use the guided troubleshooting option available from HP support here. Or have a look at the troubleshooting section in the user manual here. Then clean the engine & calibrate the printer, as described pg. 88.
If that's no help, please see this forum post and the linked attachments within.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

The yellow-print-cartridge
light is blinking, and the
printer stops printing.

The print cartridge is
empty or missing.

The printer cannot
detect the print
cartridge correctly.
1. Reinsert or replace the print cartridge.
2. If the print-cartridge light is still blinking but the
Attention light is not on, turn the printer off and
then back on.
3. If the problem persists, repeat the above steps
with yellow print cartridges until the error is
resolved.
4. If the problem persists, replace the printcartridge
E-label reader, which is located on the
pressure assembly of the print-cartridge
carousel.

Hi Mmgrafde,

Press the Go and Rotate Carousel buttons simultaneously. This will calibrate the printer. See if this works.

Otherwise....Remove all cartridges and drum. Switch off printer. Close the lid. Switch on printer and wait until any churning stops. Insert the drum and close the lid. Wait until any churning stops. Put in one cartridge at a time, closing the lid and wait till it stops churning each time. With the last cartridge put in, it will churning longer (calibrating). Try to print from your computer.

It could also be that the toner could actually have run out for the other colors.

Rgds
S88

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HP Color LaserJet 2600n Printer - Installing Print Cartridges When a print cartridge approaches the end of useful life, the control panel displays a message recommending that to order a replacement. The printer can continue to print using the current print cartridge until the control panel displays a message instructing to replace the cartridge. The printer uses four colors and has a different print cartridge for each color: black (K), cyan (C), magenta (M), and yellow (Y). Replace a print cartridge when the printer control panel displays one of the following messages: Replace yellow cartridge, Replace magenta cartridge, Replace cyan cartridge, Replace black cartridge. The control panel display also indicates the color that should be replaced (unless a genuine HP cartridge is not currently installed). Change the print cartridge

1. Turn off the printer.
2. Open the front door. CAUTION: Do not place anything on the transfer belt (ETB), which is located on the inside of the front door.
3. Remove the used print cartridge from the printer.
4. Remove the new print cartridge from the bag. Place the used print cartridge in the bag for recycling.
5. Grasp both sides of the print cartridge by the blue handles and distribute the toner by gently rocking the print cartridge from front to back. CAUTION: Do not touch the shutter or the surface of the roller.
6. Remove the orange shipping locks and the orange shipping tape from the new print cartridge. Discard the shipping tape and shipping locks according to local regulations.
7. Align the print cartridge with the tracks inside the printer, and using the handles, insert the print cartridge until it is firmly seated.
8. Firmly close the front door.
9. Turn on the printer. After a short time, the control panel should display Ready.
   NOTE: If a cartridge is in the wrong slot or is the wrong type for the printer, the control panel will display one of the following messages: Incorrect yellow, Incorrect magenta, Incorrect cyan, Incorrect black.
10. Installation is complete. Place the used print cartridge in the box in which the new cartridge arrived. See the enclosed recycling guide for recycling instructions.
11. If a non-HP print cartridge is in the printer, check the printer control panel for further instructions.
    NOTE: When replacing or changing a black print cartridge, a cleaning page will automatically print. This helps prevent speckles on the front or back of printed documents. A cleaning page can also be generated using the control panel or the HP Toolbox.

the problem is cyan and yellow toner are low, u will change the cyan and yellow it will be cleared otherwise the will be empty u can't print any thing suppose one will empty other cartridge will not work

Which color is this line? Try changing respective cartridge..