Where is the product serial number on a Ricoh SP C320DN

First, I'm not a Ricoh tech.
*** Check your warranty. Call for support
* contact info should be on the ID label.
* Web; http://anvinhco.vn

***Following is for information only.***
* ID Labels are required to be placed near the power cord (to identify power requirements.) It should contain the Brand, model, and serial number.
* Specs; http://www.inlandassoc.com/wp-content/gallery/Ricoh_Aficio-SP-6330N.pdf
* Brochure; http://brochure.copiercatalog.com/ricoh/SP-6330N-LR.pdf
* contact; https://www.youtube.com/watch?v=i0wBZ1Fwx3E
* Maintenance kit; https://www.youtube.com/watch?v=_SNftLxqVfs
* Drivers for windows; http://pabepab.xyz/ricoh-aficio-sp-6330n-21/
* Toner change; https://www.youtube.com/watch?v=CFHgtRrkbT0

Aloha, ukeboy57

542 an error in temprator .may be termistor dirty or defective.termostat or lamp check all.then reset by :c(yellow)-107-c(red.press 3 second)-then turn off and on

In a laser printer the 'Imager' is probably the same thing as the 'Image transfer drum' - this cylindrical unit has the Image of the page to be printed electrostatically set by the laser - this electrostatic image is then transferred onto the sheet of paper and electrically charged toner sticks to the page to form the image - the fuser then heats the paper and toner to fix the image and stop it smudging - The Image Transfer Drum will only be able to carry out this function a certain number of times and will need to be periodically replaced - in a business setting this could be within 1 - 2 years, in a home user setting it could last much longer - It depends on the volume of pages printed during the printer's working life

SC542 is a fuser related error code, this will need to be reset.

Probable causes are:

• Defective thermistor
• Incorrect power supply input at the main power socket
• Defective fusing lamp

Corrective actions :
1. Check the voltage of the wall outlet.
2. Replace the fusing unit
3. Replace the fusing lamp.

Resetting the code:

Execute "Fuser SC Reset" with Some (printer models) or "Engine Maintenance Menu" (MF model) to recover the machine after completing the recovery procedure. Otherwise, the machine continues to issue this SC code and cannot be operated.

Taken from the SP320DN service manual:

Ricoh-usa.com. search model number under legacy products field in the Downloads tab.

hold down up and down for 5 seconds and then hit # -Carl

You can't. Serial number and built in with non changeable memory. It is needed for warranty work. for something like that were the number vanishes, you need to ask the company.

Press the interuptkey(yelow) then press 107 and press and hold more 4 second Stop/clear(red)key.

SC542, SC543, SC544, SC546,
These codes are related to fuser temperature. Make sure that power source voltage are not low. check thermisters, fusing lamps etc. To reset this code press "All clear" yellow key, enter 107 and press the red key for some seconds. Sevice mode will be displayed, enter SP 5-810 (SC code reset) and select "1". Then hold down the Photo mode key and the # key at the same time for at least 3 seconds