Samsung SCX-4720F Service Manual

Also see for SCX-4520: Product guide Solution guide User guide User manual User manual

Contents

Service ManualAlignment & Adjustments6-18 Samsung Electronics6.5.3 Detail Description (Engine Test Mode)Function Name Description Display01.Motor Test The main motor starts when the execution key is pressed Main Motor On/Offand stops when the stop key is pressed.02.Pick Up Test Automatically stops, when the execution is chosen. Tray 1,2 Solenoid On/Offstops, when the execution is chosen.03.Fan Test The fan starts when the execution key is pressed and Fan On/Offstops when the stop key is pressed.04.Manual Clutch Test The tray2,3 clutch is on for 1sec and then it automatically Tray 2,3 Clutch On/Offstops, when the execution is chosen.On this function,the main motor runs before 2sec from the point of the clutchon in order to check the clutch state.05.PTL Test PTL(Pre-Transfer Lamp) is lights when the execution key PTL On/Offchosen and it stops when the stop key is chosen.11.LSU Motor The laser motor starts when the execution key is pressed Laser Motor On/Offand stops when the stop key is pressed.12.LSU Hsync Test The LSU motor starts and "Laser Ready" is displayed if Laser Leady On/Offthe motor spins at the correct speed, otherwise "Laser Error"is displayed.13.LD Test "Diode On" is displayed, when the laser diode is on. Diode On/OffOtherwise "Diode Off" is displayed.21.Feed Sen Test These functions allow the current state of the sensor to be "Sensor Off" or “ Sensor On ”22.Exit Sen Test displayed.23.Cover Sen Test This function allows the current state of the Cover sensor "Cover Open" or "Cover Close"to be displayed. Touch the sensor and confirm that themessage changes: "Cover Open" to " Cover Close"24.Empty Sen Test These functions allow the current state of the sensor to be "Sensor Off" or “ Sensor On ”25.Manual Sen Test displayed.31.Them ADC 180 "Current value" is displayed on the upper line of the LCD, Target temperature and32.Them ADC 140 and "Target value" on the bottom line. output temperature from33.Them ADC 120 Target value is limited from "191°C" to "80°C" thermistor and ADC.34.Them ADC 10041.MHV Test These Functions are provided to check whether the MHV On/Off42.Dev Bias Test control of the HVPS is functioning correctly. Dev Bias On/Off43.THV EN/NEG Test THV EN/NEG On/Off44.THV ON(1300V) THV On/Off45.THV ADC 1300V ADC value displayed.46.THV ADC 600V~3500 ADC value displayed.