When i scan ... it comes out just plain black ... and how i scan so it saves as a pdf

Manual is here. http://www.retrevo.com/support/Samsung-SCX-4725FN-Multifunction-Printers-manual/id/1305bh037/t/2/
You should install the software that came with it, as there are scanner drivers so you can scan to your computer. Then you can use a program like Scan2PDF which is free to scan to a PDF file. http://www.snapfiles.com/get/scan2pdf.html
Good luck! If this solution helps, please give a positive rating.

You need to install a PDF writer program first. There are quite a few freeware PDF writer programs on the Internet you can download one such as CutePDF.
Scan your document the click on File - Print and select the PDF writer as the printer device. Then name and save the PDF file.

scan a picture from my lexmark x4530 to my computer

Hi

i had the same problem- I unistalled all the software and then reinstalled and load this patch PDF patch from HP solutions centre and it fixed the problemhttp://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=15179&prodSeriesId=1151021&prodNameId=1151022&swEnvOID=181&swLang=8&mode=2&taskId=135&swItem=cs-75419-1

Regards Liz

u can make it small by reduce its resolution

You can save the scanned data on a USB memory or a memory card by using the control panel.

IMPORTANT

- You can not use USB memory card and memory card simultaneously.

1 .Select Scan (Scan) on page HOME (HOME) and then press the OK button.

The screen where you select where the data should be saved is displayed.

2 .Turn the USB memory card direct print port or memory card into the slot.

3 .Select USB flash drive (USB flash drive) or memory card (Memory card) and then press the OK button.

4 .Select Save on USB disk (Save to USB flash). The screenshot Scan documents (Scan document) is displayed.

5. State the necessary settings and then press the OK button.

6. Place the original on the glass plate as shown on the LCD screen.

7. Press the [color] (Color) for scanning in color, or button [Black] (Black) for scanning in black and white.

When the preview is enabled, press the OK button after viewing the preview pane on the LCD screen.

The machine starts scanning and the scanned data is stored either on the USB memory card. Remove the original from the glass plate, the scan is complete.

REFERENCE

- You can only scan images continuously when you select PDF. Continue to scan the confirmation screen. You can save up to 100 pages of images in a PDF file.

- If the USB memory card or memory card becomes full while images are scanned, saved only images that are already scanned.

- You can save up to 2000 files of scanned data in both JPEG and PDF formats.

- Folder and filename of the scanned data stored on USB memory or memory card is as follows:

• Folder Name: (extensions: PDF): CANON_SC \ DOCUMENT \ 0001

• Folder Name: (File Extension: JPG): CANON_SC \ IMAGE \ 0001

• Filename: Serial number, starting from "SCN_0001"

• File dates: 01/01/2008

samsung scx 4521f in black background in more verticle white line in

Yes,you do have to buy the sent kit.But remember the sent kit Scan to e-mail and not directly to the computer.Your company have to have a mail server to be able to work properly.Adobe have software that you can buy that chance word document to PDF.

As a tech I've never seen that happen. from the doc feeder only Yes, not both the feeder and the glass but not show up when you print from the computer ?????????

For sure there is a dot or something on the small strip of glass, only when you do it from the feeder.
the reason is that the document is moving and the dot on the "small" strip of glass now looks like a line to the copier.

You said it also does it when you lay it down on the glass !!??(platen) that should of indicated the drum has a ring around it, but since it doesn't come out on the PC copy then the glass must have a line on it.

The optical lamps aren't turning on. Check all connections inside for the optics. Most likely the LED bar has blown and the only solution would be replacement.