Unexpected size in tray 2

1. Make sure that the machine is turned on, and then load three sheets of A4 or Letter-sized plain paper in the Rear Tray or Cassette. 2. Open the Paper Output Tray, and then open the Output Tray Extension. (1) Put your finger in the center of the top of the Paper Output Tray and open it gently. (2) Open the Output Tray Extension. 3. Press the Paper Feed Switch to select the paper source where you have loaded paper. 4. Print the print head alignment pattern. (A) Press the HOME button. (B) Select Settings , then press the OK button. (C) Select Maintenance , then press the OK button. (D) Select Manual head align , then press the OK button. (E) Select Yes , then press the OK button. (F) When " Did the patterns print correctly? " is displayed, confirm that the pattern is printed correctly, select Yes , then press the OK button.The input screen for the head position adjustment values is displayed.
Note:If you select Head alignment print, the machine exits the process after printing the current head position adjustment values.
5. Look at the first printout, and then adjust the print head position. (A) Check the printed patterns, and use the or button to input the number of the pattern in column A that has the least noticeable vertical streaks. (B) Repeat the same procedure until you finish i nputting the pattern number for columns B to F, then press the OK button. (C) Confirm the displayed message and press the OK button.
Note: If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical white streaks.
6. Look at the second printout, and then adjust the print head position. (A) Check the printed patterns, and use the or button to input the number of the pattern in column G that has the least noticeable vertical streaks. (B) Repeat the same procedure until you finish inputting the pattern number for columns H to K, then press the OK button. For column K, the best pattern will be smooth and have no streaks in the border indicated by the arrow. (C) Confirm the displayed message and press the OK button.
7. Look at the third printout, and then adjust the print head position. Check the printed patterns, and use the or button to input the number of the pattern in columns L and M that has the least noticeable horizontal streaks, then press the OK button.
Source

Hello,
A couple of things to check.
1) Make sure the paper guides in the tray are adjusted correctly for width and in particular the length. 2) Remove the tray completely check guides. 3) Make sure the tray is fully seated into the printer. 4) Make sure the paper in the tray matches the size of the guides.
If the guides and paper seem OK, the printer may need servicing by authorized service center.
41.3 UNEXPECTED SIZE IN TRAY [xx] alternates with LOAD TRAY [xx]: [type] [size] Description This is typically caused if two or more sheets stick together in the printer or if the tray is not properly adjusted.

The unexpected paper size may cause the above error. Whenever your printer detects an abnormal size, this error appears on the device. It mainly happens when more than one sheet are attached with each other or when the paper trays are not set properly. To handle this issue, reload the trays with appropriate paper size followed by front and back tabs. For all the trays verify that correct paper size adjustments have been done. Now enable the jam recovery button and press the button 'GO' to print your document.

The unexpected paper size may cause the above error. Whenever your printer detects an abnormal size, this error appears on the device. It mainly happens when more than one sheet are attached with each other or when the paper trays are not set properly. To handle this issue, reload the trays with appropriate paper size followed by front and back tabs. For all the trays verify that correct paper size adjustments have been done. Now enable the jam recovery button and press the button 'GO' to print your document.

The unexpected paper size may cause the above error. Whenever your printer detects an abnormal size, this error appears on the device. It mainly happens when more than one sheet are attached with each other or when the paper trays are not set properly. To handle this issue, reload the trays with appropriate paper size followed by front and back tabs. For all the trays verify that correct paper size adjustments have been done. Now enable the jam recovery button and press the button 'GO' to print your document.

http://www.fixya.com/support/t6355639-hp_2640_half_right_side_page

Clean the sep. rollers one in the paper tray and one inside the paper tray port. Then clean the feed roller. Its behind the sep roller in the paper tray port. You must look close with a flash light. It has 4 D feed rollers. It will rotate down to clean them do not knock the spring off. Use only water on a cloth no alcohol. Steven 818-888-0006

Assuming the printer is otherwise working ok and we are talking about a Windows operating system....

When you choose the Print command from the drop-down menu in your application, instead of just proceeding, choose "Properties" or "Preferences" in that window. This should open up another dialog window from which you can choose additional printing options. It may be under Advanced or Tray Select, etc.

You can also get to the printer dialog windows by clicking on the Start button, then Settings, then Printers and Faxes, then double-clicking on the printer icon in that window for your printer and proceeding from there.

#1 of 2

Carryout a Manual Print Head Alignment If Possible.

Manual Print Head Alignment

If the results of Automatic Print Head Alignment are not satisfactory, follow the procedure below to perform Manual Print
Head Alignment.


1 Make sure that the machine is turned on, and then load three sheets of A4 or Letter-sized plain paper in the Auto Sheet Feeder or the Cassette.

Important. You cannot print the print head alignment pattern if paper of size other than A4 or Letter is loaded. Be sure to use A4 or Letter-sized plain paper.

2 Open the Paper Output Tray, and then open the Output Tray Extension.
(1) Put your finger in the rounded indent of the Paper Output Tray and open it gently.
(2) Open the Output Tray Extension.
3 Press the Paper Feed Switch to select the paper source where you have loaded paper.
4 Select Settings on the HOME screen.
5 Select Maintenance, then press the OK button.
The Maintenance screen is displayed.
6 Select Manual head align, then press the OK button.
The confirmation screen is displayed.

Note. If you select Head alignment print, the machine exits the process after printing the current head position adjustment values.

7 Select Yes, then press the OK button.
8 When the Print Head alignment pattern is printed, select Yes, then press the OK button.
9 Look at the printout. From the patterns, select the most even, least irregular patterns for each column and input their numbers. Press the OK button.
(1) Select a column to input the pattern number.
(2) Use the or button to input the number of the pattern.
(3) Repeat the steps (1) and (2) until you finish inputting all pattern numbers, press the OK button.

change ibt

caopy can be set by NVm Code 720-001 for side A
720-002 for Side B
please note down initial values before changing it