Code Key Operation LED Display06 ENTER Pickup Clutch ON Lighten ON LEDSHIFT+STOP Pickup Clutch OFF Lighten OFF LEDUP Increment DCU Code No. (07, Sensor TEST)SHIFT+DOWN Decrement DCU code No. (06, Pickup Clutch)07 No Action Paper Empty Sensor ON/OFF 1st LED ON/OFFNo Action Duplex 1 Sensor ON/OFF 2nd LED ON/OFFNo Action Duplex 2 Sensor ON/OFF 3rd LED ON/OFFUP Increment DCU Code No. (08, Sensor TEST)SHIFT+DOWN Decrement DCU Code No. (06, Pickup Clutch)08 No Action Multi Purpose Sensor ON/OFF 1st LED ON/OFFNo Action Exit Sensor ON/OFF 2nd LED ON/OFFNo Action Feed Sensor ON/OFF 3rd LED ON/OFFUP Increment DCU Code No. (09, Sensor TEST)SHIFT+DOWN Decrement DCU Code No. (07, Sensor TEST)09 No Action Cover Open Sensor ON/OFF 1st LED ON/OFFNo Action Cover Open Sensor ON/OFF 2nd LED ON/OFFNo Action Out Bin Sensor ON/OFF 3rd LED ON/OFFUP Increment DCU Code No. (10, Fuser TEST)SHIFT+DOWN Decrement DCU Code No. (08, Sensor Clutch)10 ENTER Fuser ON Lighten ON LEDSHIFT+STOP Fuser OFF Lighten OFF LEDUP Increment DCU Code No. (04, Dev)SHIFT+DOWN Decrement DCU code No. (02, THV Negative)12 ENTER Duplex Clutch ON Lighten ON LEDSHIFT+STOP Duplex Clutch OFF Lighten OFF LEDUP Increment DCU Code No. (13, MP Clutch)SHIFT+DOWN Decrement DCU code No. (11, Self-Test)13 ENTER Multi Purpose Clutch ON Lighten ON LEDSHIFT+STOP Multi Purpose Clutch OFF Lighten OFF LEDUP Increment DCU Code No. (14,Thermistor 2 Test)SHIFT+DOWN Decrement DCU code No. (12, Duplex Clutch)14 No Action Temperature 15 1st LED ONNo Action 15 Temperature 30 2nd LED ONNo Action Temperature 30 3nd LED ONNo Action Thermistor 2 Open All LED ONNo Action Thermistor 2 Short All LED OFFUP Increment DCU code No. (15, Cassette sensor TEST)SHIFT + DOWN Decrement DCU Code No. (13, MP Clutch TEST)15 No Action Cassette Sensor 1 ON/OFF 1st LED ON/OFFNo Action Cassette Sensor 2 ON/OFF 2nd LED ON/OFFNo Action Cassette Sensor 3 ON/OFF 3nd LED ON/OFFUP Increment DCU Code No. (16, Fan Speed TEST)SHIFT + DOWN Decrement DCU Code No. (14, Thermistor 2 Test)16 Enter Fast SpeedUP Low Speed 2nd LED ON/OFFSHIFT + STOP Fan OFF 3nd LED ON/OFFUP Increment DCU Code No. (17, PTL TEST)SHIFT + DOWN Decrement DCU Code No. (15, Cassette sensor TEST)17 Enter Dark LightUP Bright Light 2nd LED ON/OFFSHIFT + STOP Light OFF 3nd LED ON/OFFUP Increment DCU Code No. (00, Main Motor)SHIFT + DOWN Decrement DCU Code No. (16, Fan Speed TEST )ReferenceSamsung Electronics2-6Download Service Manual And Resetter Printer at http://printer1.blogspot.com