SIMPLIFIED TROUBLESHOOTING GUIDE PRINTING
Cause Failed Failed Failed Failed Failed drum unit transfer unit the high-voltage terminal the high voltage power supply board fuser unit Countermeasure Replace drum unit Check the transfer roller and spring Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Check the heat roller and the pressurized roller and the spring and the heat lamp and the thermistor Go to POWER SUPPLY BOARD SECTION (P.151) Use the recording paper from 16lb to 24lb Clean the lower glass and the reflecting mirror Clean the path of the laser beam Replace drum unit Check the heat roller and the pressurized roller Go to LSU SECTION (P.144) Replace drum unit Check the gear Go to ENGINE MOTOR (P.142) Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Replace drum unit Check the connection between the parts around CIS and earth Replace drum unit Replace drum unit Clean the pickup roller and the regist roller and the feed roller and the eject roller and the heat roller and the pressure roller Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Clean the recording paper path Replace drum unit Go to LSU SECTION (P.144) Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Check the digital board Go to CIS (Contact Image Sensor) SECTION (P.145) Supply toner Replace drum unit Replace drum unit Clean the lower glass and the reflecting mirror Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Supply toner Replace drum unit Replace drum unit Clean the lower glass and the reflecting mirror Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Replace drum unit Go to LSU SECTION (P.144) Check the high-voltage terminal Go to HIGH VOLTAGE SECTION (P.147) Check the digital board Go to CIS (Contact Image Sensor) SECTION (P.145) Replace drum unit Replace drum unit Check the heat roller Replace drum unit Go to HIGH VOLTAGE SECTION (P.147) Use the recording paper from 16lb to 24lb
No. Symptom 1 GHOST IMAGE (P.95)
Failed the power supply board Too thick or too thin recording paper 2 DARK OR WHITE Dirty the lower glass or the reflecting mirror VERTICAL LINE (P.96) Dust on the path of the laser beam Dust on the developing roller Failed the heat roller or the pressuizedr roller Failed LSU 3 DARK OR WHITE Failed drum unit HORIZONTAL LINE (P.97) Failed the gear Failed the engine motor Failed the high-voltage terminal Failed the high voltage power supply board Scratch on the OPC drum Static electricity on the documents (when copying) 4 DIRTY OR HALF Failed drum unit DARKNESS Life of drum unit is over BACKGROUND (P.98) Dirty the pickup roller and the regist roller and the feed roller and the eject roller and the heat roller and the pressure roller Failed the high-voltage terminal Failed the high voltage power supply board Dirty the recording paper path Failed drum unit Failed LSU Failed the high-voltage terminal Failed the high voltage power supply board Failed the digital board Failed CIS (when copying) Short toner Failed drum unit Life of drum unit is over Dirty the lower glass or the reflecting mirror Failed the high-voltage terminal Failed the high voltage power supply board IS Short toner OR Failed drum unit Life of drum unit is over
5 BLACK PRINT (P.99)
6 LIGHT PRINT (P.100)
7 BLACK DENSITY LIGHT UNEVEN(P.101)
Dirty the lower glass or the reflecting mirror Failed the high-voltage terminal Failed the high voltage power supply board 8 BLANK PRINT (P.102) Failed drum unit Failed LSU Failed the high-voltage terminal Failed the high voltage power supply board Failed the digital board Failed CIS (when copying) 9 BLACK OR WHITE POINT Failed the developer roller (31.4mm pitch) (P.102) Failed the OPC drum (75.4mm pitch) Failed the heat roller (62.8mm pitch) Failed the charge blush (21mm pitch) Failed the high voltage power supply board Too thick or too thin recording paper
