Have a deskjet 3600 series, it is not feeding the paper.

The error code 90020503 on an HP Deskjet 960C Series printer typically indicates a paper jam or an issue with the paper feed mechanism. Here are some steps you can take to resolve the error:

1. Check for paper jams: Open the printer's access doors and carefully remove any jammed paper. Make sure to check all areas of the printer, including the input and output trays, as well as the rear access panel.
2. Clear any obstructions: Look for any foreign objects or debris that may be blocking the paper path or causing the error. Gently remove any obstructions that you find.
3. Reset the printer: Turn off the printer, unplug it from the power source, and wait for a few minutes. Then, plug it back in and turn it on. This will perform a power cycle, which can often resolve temporary issues.
4. Check paper condition: Ensure that the paper you are using is not wrinkled, folded, or damaged. Straighten out any curled edges and make sure the paper is properly aligned in the tray.
5. Adjust paper guides: Verify that the paper guides in the input tray are adjusted correctly to fit the size of the paper being used. Improperly adjusted paper guides can cause paper jams or feeding issues.
6. Clean the paper feed rollers: Over time, paper dust and debris can accumulate on the paper feed rollers, causing them to slip and result in paper feed problems. Clean the rollers using a lint-free cloth lightly dampened with water or isopropyl alcohol.

hp deskjet 3600 series
Printer show paper jam without paper in it try blowing it out with compressed.

There's a small piece of paper on the sensor. 4 in 1 Cleaning Paper for Laser Ink Jet Printers 12 Pack Perfect Data PD... You need paper path cleaning sheets like tho ones here. That should clear the jammed condition.

1. Remove the rear cleanout from the printer.
2. Gently remove any jammed paper or bits of paper.
3. Close the HP Paper Feed Cleaning Kit software on the computer.
4. Load plain paper in the printer paper tray.
5. Press the Power button to turn the printer off.
6. Press the Power button to turn the printer on.
7. Try printing again. If the printer still does not pick up paper or if a paper jam occurs again, service the printer.

Other solutions customers found helpful » HP Paper Feed Cleaning Kit -- Clean the Paper Feed Rollers with the HP Paper Feed Cleaning Kit in Windows XP and 2000 » HP Deskjet, Photosmart, and PSC All-in-Ones -- 'Out of Paper' Error Message and the Printer Does Not Pick Up or Feed Paper » HP PSC 1600 and 2350 All-in-One Series Printers -- 'Paper jam: Press OK to continue' Message Displays on the All-in-One

Try this: turn the printer off This document explains how to perform built-in internal tests on HP Deskjet 3650 printer. The internal tests can be used to verify that the printer's internal firmware is functioning properly. The tests do not verify that the computer and printer connections are working properly. Running a diagnostic test

1. Turn the printer on.
2. Press and hold down the POWER button.
3. Open and close the top cover four times.
4. Release the POWER button.

NOTE: When running the test on an HP Deskjet 3600 series printer it may be helpful to use a pen or pencil to hold down the Power button.

Read these HP FAQs for your printer:

• Paper Feed Problems
• Fixing Paper Jams on 700 Series Printers
• Fixing Blinking Lights on 700 Series Printers
• Cleaning and Maintaining the 700 Series Printer

Install correct driver. Cartridges may be damaged.

go to printer propeties and check paper size ther'l be a custom size click on that n feed what u wnt

Control Panel

Printers

Add New Printer

Add a local printer

keep as LPT1

Click HP Deskjet 3600 series

Click next

Change name to HP Deskjet 3420

Dont print test page.

Bak to printers

Left click "properties"

Ports

Change to USB

Done:)

here you go...
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=59307&lc=en&cc=us&dlc=en&lang=en&cc=us