Epson CX4200 makes horrible noise when is going throught its start up, I see yellow belt moving when noise is made and then error indicator and all other lights blink. Their tech support says to bring it in and offer no advice.

http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?oid=58606&infoType=Downloads

that link might help u

Examine the belt that powers the print head, see if it is excessively sloppy, check the head moves freely along the print head bar, if it snags, there is damage to the bar or the print head holder is worn

TBH, I'd bury it if there is any wear as replacement parts are expensive compared to a new printer

try printing the nozzle check page.. you will be able to see which color that is missing... it should have Yellow , Megenta, Cyan and Black... if any one of the color is missing.. try performing head cleaning and after twice cleaning and still no improvement, very high possibility your print head is clogged..

Have you tried " Epson Stylus CX4200 manual" on Google?...
Go to:
http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&oid=58605&infoType=Doc
You have all the documents there, including a User's Guide.

Use "spet" (tube only). Add flexible pipe (cut from oultet pipe of head cleaning mechanic). Connect to nozzle. Fill tube with cleaner. Move head to parking position. Do suction from outlet pipe of head cleaning. It's the safely way to clean print head manually.

Go to www.epson.com and download the lastest drivers for that printer.

need to download cd forthe epson cx4200

1. Make sure the printer is turned on.
2. Make sure the document cover is closed, then closed, then open the scanner.
(Do not open the scanner when the document cover is open).
3. Press and release the ink button. The 'On' and 'Ink' lights flash.
If one of the cartridges is low or empty the printer moves that cartridge to the 'ink out' mark. Go to step 4.
If no cartridges are low or empty the ink cartridge holder moves to the ink replacement position. Go to step 5.
4. Pree the 'ink' button again.
If more than one cartridge is empty or low the next cartridge moves to the 'ink out' mark.
Once the printer identifies all the empty or low ink cartridges the print head moves to the ink cartridge replacement position.
5. Open the cartridge cover, squeeze the tab at the back of the empty cartridge and lift it out.
6. Before you open the new cartridge package shake it four or five times and remove it from the package .
(Don't remove or tear the label on the cartridge otherwise ink will leak out) .
(Don't touch the green chip on the front of the ink cartridge - you could damage the cartridge).
7. Place the new ink cartridge into the cartridge holder and push it down till it clicks into place.
8. Replace any other cartridges that need replacing.
9. Close the ink cartridge cover and press it until it clicks into place.
10. Close the scanner.
11. Press the 'ink' button. The printer starts charging ink and the 'on' light starts flashing . This takes about a minute . When it's finished the 'on' light stops flashing and remains on and the 'ink' light goes out.

You'll see all the above, with helpful pictures, at

this Epson support page

try uninstalling than re installing the scanner driver only
(add remove programs -> epson scan)

issue persists - hardware issue

I just Fixed the error of All Lights Flashing on my epson cx4200 printer.
Solution: I Totally unpluged the printer from 110 power source
then waited 3 minutes, then press the On button and let the printer run thru its normal noises during start cycle.
Originally I tried to just turn printer off with the off/on button but this did not ix the problem.
So make sure you TOTALLY disconnect the printer from the 110 AC power source.
Hope this helps.