Samsung ML-7300 series Service Manual

Also see for ML-7300 Series: Product guide User guide User guide Service manual Manual Del Usuario

2-2-3. The Diagnostic Control Unit (DCU) Operating GuideThe DCU has functions as follows:1) Engine Status and Error Code Display modeDisplay the engine status and error status code. Refer to List of Code Description.2) Self-Test mode.When the engine is ready, this button starts printing a streak pattern.3) Green modeTransfer high Voltage adjustment modeWith the power off, hold down the Self-Test button and turn on the pinter. Continue holding down the buttonfor 4 seconds to start Green mode.4) Diagnostic Control mode.With the power off, hold down the 3 button (up/down, shift, stop/enter) and turn on the printerContinue holding down the button for 5 seconds to start Diagnostic Control mode on the engine.The DCU has three diagnostic control buttons.UP : Steps the function of the other two buttons:SHIFT : Controls the function of the other two buttons:SHIFT+UP means step down and SHIFT+START means stop.START : Starts or stops the current diagnostic test.Code Key Operation LED Display00 ENTER Run Main Motor Lighten ON LEDSHIFT+STOP Stop Main Motor Lighten OFF LEDUP Increment DCU Code No. (01, MHV)SHIFT+DOWN Decrement DCU code No. (13, MP)01 ENTER MHV ON Lighten ON LEDSHIFT+STOP MHV OFF Lighten OFF LEDUP Increment DCU Code No. (02, THV Negative)SHIFT+DOWN Decrement DCU code No. (00, Main Motor)02 ENTER THV Negative ON Lighten ON LEDSHIFT+STOP THV Negative OFF Lighten OFF LEDUP Increment DCU Code No. (03, THV)SHIFT+DOWN Decrement DCU code No. (02, MHV)03 ENTER THV ON Lighten ON LEDSHIFT+STOP THV OFF Lighten OFF LEDUP Increment DCU Code No. (04, Dev)SHIFT+DOWN Decrement DCU code No. (02, THV Negative)04 ENTER DEV, SUPPLY ON Lighten ON LEDSHIFT+STOP DEV, SUPPLY ON Lighten OFF LEDUP Increment DCU Code No. (05, LSU)SHIFT+DOWN Decrement DCU code No. (03, THV)05 ENTER LSU Motor On Lighten 3rd LEDUP LSU Ready and LD On Lighten 1, 2nd LEDSHIFT+STOP LSU Motor OFFUP Increment DCU Code No. (06, Pickup Clutch)SHIFT+DOWN Decrement DCU code No. (04, Dev)ReferenceSamsung Electronics 2-5Download Service Manual And Resetter Printer at http://printer1.blogspot.com