The paper output tray is extended and locked. How to collapse it?

Hi
Please find below a fairly comprehensive guide to using envelopes on your machine
The address is automatically rotated and printed according to the envelope's direction by specifying with the printer driver properly.
You can only print on envelopes with the computer.
Do not use the following envelopes. They could jam in the machine or cause the machine to malfunction.
- Envelopes with an embossed or treated surface
- Envelopes with a double flap
- Envelopes whose gummed flaps are already moistened and adhesive Prepare envelopes.
Press down on all four corners and edges of the envelopes to flatten them.
If the envelopes are curled, hold the opposite corners and gently twist them in the opposite direction.
If the corner of the envelope flap is folded, flatten it.
Use a pen to press the leading edge in the inserting direction flat and sharpen the crease.
The envelopes may jam in the machine if they are not flat or the edges are not aligned. Make sure that no curl or puff exceeds 0.1 inches (3 mm). Load envelopes.
(1) Open the front cover gently, and extend the paper support.
(2) Use the right paper guide (A) to slide both paper guides all the way out.
(3) Load the envelopes in the center of the front tray WITH THE ADDRESS SIDE FACING DOWN.
The folded flap of the envelope will be faced up on the left side.
Push the envelopes all the way to the back of the front tray.
Up to 5 envelopes can be loaded at once.
(4) Slide the right paper guide (A) to align the paper guides with both sides of the envelopes.
Do not slide the paper guides too hard against the envelopes. The envelopes may not be fed properly.
Do not overload envelopes by stacking until the top of the stack touches the paper guides. (5) Open the output tray extension.
Open the paper output tray.and extend the paper output support.
Be sure to open the paper output tray when printing. If not open, the machine cannot start printing. After loading envelopes
Select the size and type of the loaded envelopes on the print settings screen of the printer driver. You may find it easier to download the manual from here
Canon PIXMA MG3250
and install it on your desktop for future reference
Cheers

1. Grasp the handle on the front of the input tray, and then pull the tray towards you to open it.
   Figure 1: Pull out the input tray
   
   
2. Slide the paper width guides out as far as possible.
   
3. Remove all paper from the paper tray.
   
4. Inspect and remove any foam or tape packaging materials in the paper tray.
   
5. Insert a stack of unused, plain white paper (with the print-side down) in the center of the tray.
   
   Figure 2: Load paper into the tray
   
   
   CAUTION: Do not load any paper above the solid red lines on the sides of the tray. Do not use torn, wrinkled, perforated, wet, or folded paper. Make sure to remove all paper clips and staples before loading the paper. Figure 3: Stack label height
   
   
6. Slide the paper guides in so that they rest against the edges of the paper, and then insert the tray into the product and push it forward until it clicks into place.
   
   Figure 4: Slide the paper guides in and reinsert the tray into the product
   
   
7. Pull out the tray extender on the output tray.
   
   Figure 5: Pull out the tray extender on the output tray
   
   

Step two: Load paper in optional Tray 2

Tray 2 is an optional accessory. Follow these steps to load paper in Tray 2.
NOTE: Tray 2 supports only plain letter or A4 paper.

1. Grasp the underside of the tray, and then pull out the tray from the bottom of the printer.
   Figure 6: Pull out the tray from the bottom of the printer
   
   
2. Slide the paper width guides out as far as possible.
   
3. Load a stack of unused, plain white paper (print-side down) in the center of the tray. Make sure that the stack of paper aligns with the engraved lines in the tray.
   
   NOTE: Load Tray 2 with only U.S. Letter or A4 plain white paper.
   
4. Slide the paper guides in so that they rest against the edges of the paper.
   
5. Carefully reinsert the tray into the printer, and then push the tray forward to close it.
   
   Figure 7: Reinsert the tray into the printer
   
   
6. Pull out the tray extender on the output tray.
   
   Figure 8: Pull out the tray extender
   
   

Load specialty paper Follow these steps to load specialty paper such as card stock, envelopes, photo paper, or labels.
Before you proceed, verify that your printer supports the specialty paper on which you are attempting to print by viewing the product specifications . If the size, type, or weight of the paper is not available, the printer does not support printing it. Also note the tray loading capacity for the type of paper on which you are attempting to print.

Hi,

Follow the steps below to align the printer

1. Press and release the On/Off button located in the upper left-hand corner of the operations panel to turn the power on. Open the sheet feed cover on the rear paper tray. Pull out the paper support until it stops at its fully extended position.
   
2. 2 Open the paper output tray. Flip the paper output tray extension out. Load a sheet of letter-sized plain paper in the rear tray. Slide the paper guide to the right until it is snug against the left side of the paper.
   
3. 3 Press and release the Home button on the control panel. The Home screen will be displayed on the LCD panel. Press the Up or Down Arrow button to scroll through the menu. Select the Settings option. Press and release the OK button. Select the Maintenance option. Press and release the OK button. Select the Auto head align option. Press and release the OK button.
   
4. 4 Wait for the confirmation screen to be displayed on the LCD panel. Select the Yes option. Press and release the OK button. Wait for the printer to automatically align the print head and print the alignment sheet. This process should take approximately 4 minutes.
   

Regards,
Shawn

The printer will not print as long as the paper output tray is closed.

1. Open the Paper Output Tray (2).
   Put your finger in the rounded indent beside the Paper Output Tray and open it gently.
   
   
2. Open the Output Tray Extension (3).
   Open up and set the Output Tray Extension completely by pressing down the hollow on its front side.
   
   
3. Adjust the position of the Paper Thickness Lever (4).
   Set it to the right when printing on envelopes or T-shirt transfers, and left when printing on any other type of paper.

Loading your paper
Paper loading tips:
● Load paper with the side to be printed facing down.
● You can print photos and documents on a wide variety of paper sizes, from
8 x 13 cm (3 x 5 inch) up to 22 x 61 cm (8.5 x 24 inch). The 10 x 15 cm
(4 x 6 inch) photo paper is available with and without tabs.
● Before loading paper, pull the Main paper tray out (use the Main tray release or
the tray grips) and slide out the paper-width and paper-length guides to make
room for the paper. After loading paper, adjust the guides to fit close to the edges
of the paper without bending the paper. When finished loading paper, push the
Main tray back in all the way.
● Load only one type and size of paper at a time in the same tray.
● After loading paper, extend the Output tray extension to catch your printed pages.
Use the directions in the following table to load the most commonly used paper sizes
into the printer.
Paper type How to load Tray to load
Any supported
photo or plain
paper media
1. Extend the Main tray by
pulling it out with the Main
tray release or the tray
grips.
Load the Main tray
Chapter 2
(continued)
12 HP Photosmart 8200 series
Paper type How to load Tray to load
2. Slide the paper-width and
paper-length guides to
their outermost positions.
3. Load paper with the side
to be printed facing down.
Check that the stack of
paper is no higher than
the top of the paperlength
guide.
4. Adjust the paper-width
and paper-length guides
inward until they stop at
the edges of the paper.
5. Push in the Main tray all
the way in.
6. Make sure the light on the
Photo tray button is
turned off to enable
printing from the Main tray.
Load paper and adjust guides inward
1 Paper-width guide
2 Paper-length guide
Push in the Main tray
1 Push the Main tray all the way in

On the left side of the output tray, U shall find paper tray extender that have to be pulled out to stop falling paper to the floor.

You can use the paper cassette located at the bottom of the printer, on the front when the output paper tray is closed concealing the paper feed switch, the usb port and the cassette lamp.
1 Gently pull out the cassette from the printer.
2. Remove the cover from the cassette.
3. Place your paper in the cassette tray.
a. when using A5 or larger sized paper (non standard sized paper, pinch the tab and extend the cassette if needed.
b. legal sized paper is not loadable in the cassette
4. Do not load paper above the load limit mar4k.
5. Make sure the print side of the paper is facing down.
6. Align the paper stack against the right side of the cassette
7. Slide the paper guides so they fit the loaded paper stack.
8. The paper cassette will hold up to 150 sheets of plain paper, however you do not eant to stack any more than 50 sheets in the Paper Output Tray.
9. Reinsert the cassette into the printer. Then set the cover on the cassette. Now make sure the cassette is pushed al the way into the printer. (If long paper was used and the cassette was extended iy will now extend beyond the front of the printer
10. Prepare the paper output tray by opening the front cover and pulling out the tray extension until extended completely.
11. Press the paper feed switch so the cassette lamp lights.

You can slo select the paper source with the printer driver if you prefer .

The Xerox 6110 MFP has a green 'lock/unlock' slider on the "roof" of the "out" paper tray (under the front control pannel assembly); see images below. When slide to the back, it locks the scanner, and to the front unlocks it.
Front of the Xerox 6110MFP howing paper output tray and control panel.

Xerox 6110MFP showing the output paper tray and the 'green' scanner slide lever in the roof of the tray.

Where are the notches?