4. Troubleshooting► Error CodeC8–4130► Error messageReplace with new cyan developer unit► SymptomThe life of the cyan developer unit expires has expired.► Troubleshooting method1) Turn the machine off.2) Replace the cyan developer unit.(Refer to 3.2.2.2. Developer Unit)3) Turn the machine on then print the test page.► Error CodeC8–4210C8–4310C8–4313► Error messageCyan Developer Failure: #C8-4210. Turn off then onCyan Developer Failure: #C8-4310. Install cyan developer unit againCyan Developer Failure: #C8-4313. Turn off then on. Please call for service if the problem persists► SymptomThe cyan developer unit has a problem with toner supply or sensor calibration.► Troubleshooting method1) Open the front cover.2) Remove the waste toner container.3) Check if the toner supply pipe is blocked. If it is closed, open it.4) Install the waste toner container. Close the front cover.5) Turn the machine off then on.6) If the problem persists, remove and reinstall the cyan developer unit.7) If the problem persists, replace the cyan developer unit.(Refer to 3.2.2.2. Developer Unit)4-115 Copyright© 1995-2013 SAMSUNG. All rights reserved.