44292401TH Rev.1
65 /
Oki Data CONFIDENTIAL
14.3.57 SOFT SWITCH: #55............................................................................... 169
14.3.58 SOFT SWITCH: #56............................................................................... 169
14.3.59 SOFT SWITCH: #57............................................................................... 169
14.3.60 SOFT SWITCH: #58............................................................................... 169
14.3.61 SOFT SWITCH: #59 (Part 1)..................................................................170
14.3.62 SOFT SWITCH: #59 (Part 2)..................................................................170
14.3.63 SOFT SWITCH: #59 (Part 3)..................................................................171
14.3.64 SOFT SWITCH: #60............................................................................... 171
14.3.65 SOFT SWITCH: #61............................................................................... 171
14.3.66 SOFT SWITCH: #62............................................................................... 172
14.3.67 SOFT SWITCH: #33............................................................................... 172
14.3.68 SOFT SWITCH: #64............................................................................... 172
15. Fax Protocols ................................................................................................... 173
15.1 G3 ECM (G3 Error Correction Mode)............................................................ 173
15.2 Line control.................................................................................................... 173
15.2.1 Procedure of G3 mode communication..................................................173
15.3 Table of reference code..................................................................................174
15.4 How to analyze the T30 protocol monitor.......................................................174
TROUBLESHOOTING .................................................... 178
16. Jam display ...................................................................................................... 178
16.1 Misfeed display.............................................................................................. 178
16.1.1 Misfeed display resetting procedure.......................................................178
16.2 Sensor layout................................................................................................. 178
16.3 Solution.......................................................................................................... 179
16.3.1 Initial check items................................................................................... 179
16.3.2 Misfeed at tray1 media feed section....................................................... 179
16.3.3 Misfeed at 2nd transfer section...............................................................179
16.3.4 Misfeed at fusing section........................................................................180
16.3.5 Misfeed at exit section ............................................................................ 180
16.3.6 Misfeed at the document feeding section ...............................................181
16.3.7 Document transport section ...................................................................181
16.3.8 Misfeed at the document exit section ..................................................... 182
17. Malfunction code..............................................................................................182
17.1 Trouble codes (service call).......................................................................... 182
17.1.1 Trouble code list...................................................................................... 182
17.2 Resetting a malfunction................................................................................. 183
17.3 Solution..........................................................................................................184
17.3.1 0001: Transport motor malfunction ......................................................... 184
17.3.2 001B: Developing motor malfunction......................................................184
17.3.3 004C: Ozone ventilation fan motor malfunction......................................184
17.3.4 004E: DC power supply fan motor malfunction.......................................184
17.3.5 0092: Transfer belt rotation failure...........................................................184
17.3.6 0094: 2nd image transfer pressure/retraction failure.............................. 185
17.3.7 0300: Polygon motor malfunction ...........................................................185
17.3.8 0310: Laser malfunction .........................................................................185
17.3.9 0500: Fuser warm-up failure
0503: Thermistor resistance failure.........................................................185
17.3.10 0502: Thermistor open-circuit failure
0510: Abnormally low fuser temperature
0520: Abnormally high fuser temperature ..............................................186
17.3.11 0F51: Waste toner full sensor malfunction..............................................186
17.3.12 13C0: Print control board malfunction ....................................................186
17.3.13 13DD: Backup data error........................................................................ 186
17.3.14 13F0: Engine control failure....................................................................186
17.3.15 13E2: Engine flash ROM write error....................................................... 186
17.3.16 0045: Exit tray cooling fan motor malfunction......................................... 187
17.3.17 0650: Scanner home sensor abnormalities............................................187
17.3.18 14A3: IR lamp malfunction......................................................................187
17.3.19 1038: Engine connect error ....................................................................187
17.3.20 3FFF: Flash ROM write error..................................................................188
18. Power supply errors .........................................................................................188
18.1 Machine is not energized at all (DCPU operation check)............................. 188
18.2 Control panel indicators do not light.............................................................. 188
19. Image quality problems.................................................................................... 189
19.1 Print system................................................................................................... 189
19.1.1 White lines/bands, colored lines/bands in sub scan direction ................ 189
19.1.2 White lines/bands, colored lines/bands in main scan direction .............. 189
19.1.3 Uneven density in sub scan direction.....................................................190
19.1.4 Uneven density in main scan direction...................................................190
19.1.5 Low image density..................................................................................191
19.1.6 Gradation reproduction failure................................................................191
19.1.7 Foggy background.................................................................................. 192
19.1.8 Poor color reproduction ..........................................................................192
19.1.9 Void areas, white spots........................................................................... 193
19.1.10 Colored spots ......................................................................................... 193
19.1.11 Blurred image......................................................................................... 194
19.1.12 Blank copy, black copy............................................................................ 194