Oki MB461 - 8.5.5 Preparing for Troubleshooting; Preparing for Troubleshooting

Oki Data CONFIDENTIAL
44871001TH Rev.6
8-38
8. TROUBLESHOOTING PROCEDURES
(1) LCD Display Trouble ...................................................................................8-39
(1-1) LCD displays nothing ...........................................................................8-39
(1-2) Display of OKI logo ..............................................................................8-40
(1-3) Error message display .........................................................................8-40
(2) Abnormal MFP operation after powered on ................................................8-40
(2-1) No operation ........................................................................................8-40
(2-2) Abnormal sound ...................................................................................8-42
(2-3) Abnormal odor .....................................................................................8-43
(2-4) Slow starting time.................................................................................8-43
(3) Paper feed jam (Error code 391: 1st tray) .....................................................8-54
(3-1) Does a jam error occur when turning on the power? ...........................8-54
(3-2) Jam occurs immediately after the paper feed is started. (1st tray) .......8-54
(4) Feed jam (Error code 380, 381) .....................................................................8-55
(4-1) Jam occurs immediately after the power is turned on. .........................8-55
(4-2) Jam occurs immediately after the paper feed is started. ......................8-55
(5) Paper feed jam (Error code 390: Multipurpose tray) .....................................8-56
(5-1) Does a jam error occur when turning on the power? ...........................8-56
(5-2) Jam occurs immediately after paper feed is started.
(Multipurpose tray) ...............................................................................8-57
(6) Paper running jam (Error code 381:) .............................................................8-58
(6-1) Jam occurs immediately after the power is turned on. .........................8-58
(6-2) Jam occurs immediately after the paper feed is started. ......................8-58
(7) Two-sided printing jam (Error code: 370, 371, 372, 373, 383) .....................8-58
(7-1) Two-sided printing jam. ......................................................................... 8-58
(8) Paper size error (Error code 400) .................................................................. 8-59
(8-1) Jam occurs when paper end is located near the IN1 sensor. ............... 8-59
(9) Fuser unit error (Error 170 to 177) .................................................................8-59
(9-1) Error occurs immediately after the power is turned on. ........................8-59
(9-2) Error occurs approx. 1 minute after the power is turned on. ................. 8-59
(10) Motor fan error (Error code 120, 127, 128) ..................................................8-60
(10-1) The low voltage power supply fan does not rotate immediately
after the power is turned on. .............................................................8-60
(10-2) All fans of the printer do not rotate. ................................................... 8-60
(11) Print speed is slow. (Performance is low.) ...................................................8-60
(11-1) Print speed decreases. .....................................................................8-60
(12) Option unit cannot be recognized. ...............................................................8-61
(12-1) Option try unit cannot be recognized. ...............................................8-61
(13) LED head cannot be recognized. (Error code 131, 132, 133, 134) .............. 8-61
(13-1) Service call 131 to 134 (LED HEAD Missing) ...................................8-61
(14) Toner cartridge cannot be recognized. (Error code 540, 541, 542, 543) ....8-62
(14-1) Error caused by the consumable items. ............................................ 8-62
(14-2) Error caused by the toner sensor .....................................................8-62
(14-3) Error caused by the defective mechanism ........................................ 8-63
(15) Fuse cut error (Error codes 153 to 155) ......................................................8-63
(15-1) Fuse cut error ...................................................................................8-63
(16) Humidity sensor error (Error code 123) .......................................................8-64
(16-1) Humidity sensor error .......................................................................8-64
Note! •WhenreplacingtheCU/PUboard,pleasereadthecontentonthe
EEPROM chip of the old board and copy it to the new board. (Refer to 5.6.1
when exchange the CU/PU board)
 • ConnectiondiagramisseeFig1-1.
8.5.5 Preparing for troubleshooting