Like other office equipments, Panasonic machines are equipped with a self diagnose system to indicate an error message whenever a problem occurs in the machine. Most common error messaged U 25 indicates that toner bottle is not feeding toner. Try to reinstall the toner after shaking it well.
U13 indicates toner empty condition, it must be cleared by pressing any key if F5-63 is set to 0 or by pressing Function and 1 if F5-63 is set to 1. Fusing errors (E4-x) should be reset in F9 mode, 06 (RAM initialize), sub code 04.
| E1-01 | Scan problem, home sensor, scanner motor, board SPC board, connector |
| E1-20 | Laser problem, Check laser unit |
| E1-22 | Laser polygon motor synchronization |
| E1-31 | Exposure lamp, inverter board |
| E2-01 | Lift motor for 1st paper tray |
| E2-02 | Lift motor for 2nd paper tray |
| E2-03 | Lift motor for 3rd paper tray |
| E2-04 | Lift motor for 4th paper tray |
| E2-10 | System console motor problem, drive motor |
| E3-01 | Toner motor not turning |
| E3-02 | Toner screw motor problem |
| E3-03 | Toner sensor problem |
| E3-10 | HVT/grid problem |
| E3-20 | Main motor drive problem |
| E4-01 | Low fuser temperature, lamp, thermal switch |
| E4-02 | Fuser jam |
| E4-10 | Fuser fan problem |
| E5-11 | Printer connection SC board or SPC board |
| E5-17 | Scanner problem |
| E5-42 | Total counter |
| E5-60 | Power Supply fan |
| E7-90 | Hardware key |
| E13 | Out of toner, toner bottle problem, toner sensor |
| HDD | Option required additional sort memory |
| U00 | Key counter or ID code needed |
| U01 | Front door, side door or interlock |
| U07 | Interlock on paper feed cover 1,2 or 3. |
| U13 | Add toner |
| U14 | Toner waste toner container full. |
| U15 | Waste toner container missing |
| U16 | No developer |
| U18 | Departmental copy counter full |
| U20, 21 | ADF cover open |
| U22 | ADF exit cover open |
| U25 | Toner bottle not feeding toner |
| U90 | Replace internal backup memory |
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