Oki C3400n Maintenance Manual

Also see for C3400n: Configuration guide User guide Specifications Network guide User guide

Contents

Oki Data CONFIDENTIAL43163501TH Rev. 1 153 /7.5.2.(9) Fuser Error (Error 170-177)(9-1) Error occurred immediately after turning on the printer.Upper thermistor, lowerthermistor, frame thermistor,side thermistor (only C3400)Mounting condition of fuserConfirmation TasksCheck whether short or open circuit exists.Check the resistance value of connector pins on the lower partof fuser.(Refer to Chapter 8.1 check the resistance value (Fuser))Is the connector of lower part of fuser pressed in position inorder to mount the fuser?Action at NGReplace the fuser with anew one. When trying touse a new fuser, pleaseutilize the fuse keepmode of themaintenance utility. (SeeNote! on page 154.)Reset the fuser.(9-1-1) Trouble of thermistor Note)Confirmation Items(9-2) Error occurred after turning on the printer for about 1 minute.Thermostat, halogen lampInstallation of upperthermistorInstallation of lower thermistorAC voltage of low-voltagepower supplyHeater ON signal outputtedfrom PU to low-voltage powersupplyConfirmation TasksPerform the heater control of fuser, and by hand check whetherthe fuser is warmed up.Check that the resistance value between 1pin-7pin of connectoris several ‰ -several 10‰ with keeping the printer cool.(Refer to Chapter 8.1 check the resistance value (Fuser))The upper thermistor may be installed out of position, is themeasured temperature lowered?Remove the heater cover, by visual inspection check whetherbending of sensor occurs.If the lower thermistor is not contacted, would the detectedtemperature be lower than actual temperature?Is AC voltage supplied for heater normally?Between 1-3pin and 3-4pin of CN2 connector of power supplyCheck whether heater ON signal is activated in the warming-uptiming. L is activated during ON.14pin of POW connector of main board (BLA PCB)Action at NGReplace the fuser with anew one. When trying touse a new fuser, pleaseutilize the fuse keepmode of themaintenance utility. (SeeNote! on page 154.)Replace the fuser with anew one. When trying touse a new fuser, pleaseutilize the fuse keepmode of themaintenance utility. (SeeNote! on page 154.)Replace the fuser with anew one. When trying touse a new fuser, pleaseutilize the fuse keepmode of themaintenance utility. (SeeNote! on page 154.)Replace the low-voltagepower supply.Replace the main board(BLA PCB) with a newone.(9-2-1) Temperature rise of fuser(9-2-2) Temperature rise of fuser(9-2-3) AC input for halogenConfirmation ItemsNote! Because service call 171 error and 175 error may occur when the temperature of printer isbelow zero, please restart the printer after making it warm when the temperature of printeris low.