Oki C711 User Manual

44205401TH Rev.1
150 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
7.5.2 Preparation for troubleshooting
Note! When replacing the CU/PU board, read the EEPROM chip contents of the
old board first, and copy them to the new board upon completion of the
replacement. (Refer to section 5.4.1 Precautions when replacing the engine
control board.)
(1)
LCD display error ................................................................................................149
(1-1) LCD does not display an
ything. ................................................................149
(1-2) PLEASE W
AIT ..........................................................................................150
(1-3) Error messages related to Operator P
anel are displayed. ........................150
(1-4) "RAM check in prog
ress" or "Initializing" display is kept appearing. .........150
(2) Abnormal oper
ations of printer after the power is turned on ...............................151
(2-1) Any oper
ation does not start at all. ...........................................................151
(2-2) Abnormal sound is heard. .........................................................................
151
(2-3) Bad odors are generated. .........................................................................
152
(2-4) Rise-up time is slow
. .................................................................................152
(3) Paper f
eed jam (error code 391: 1st tray) ............................................................159
(3-1) Jam occurs immediately after the po
wer is turned on. (1st tray) ...............159
(3-2) Jam occurs immediately after the paper f
eed is started. (1st tray) ...........159
(4) Feed jam (error code 380)
..................................................................................161
(4-1) Jam occurs immediately after the po
wer is turned on. ..............................161
(4-2) Jam occurs immediately after the paper f
eed is started. ..........................161
(5) Paper f
eed jam (error code 390: Multipurpose tray) ............................................162
(5-1) Jam occurs immediately after the po
wer is turned on.
(Multipurpose tra
y) ....................................................................................162
(5-2) Jam occurs immediately after paper f
eed is started.
(Multipurpose tra
y) ....................................................................................163
(6) Paper r
unning jam (error code 381:) ...................................................................164
(6-1) Jam occurs immediately after the po
wer is turned on. ..............................164
(6-2) Jam occurs immediately after a paper is tak
en into printer. ......................164
(6-3) Jam occurs in the middle of paper r
unning path. ......................................165
(6-4) Jam occurs immediately after paper has reached the fuser
. ....................166
(7) Paper unloading jam (error code 382)
.................................................................166
(7-1)
Paper unloading jam occurs immediately after the power is turned on. ................. 166
(7-2) Paper unloading jam occurs after a paper is taken into printer. ................167
(7-3) Paper unloading jam occurs in the middle of paper running path. ...........168
(8) Tw
o-sided printing jam (error code: 370, 371, 372, 373, 383) .............................168
(8-1) Tw
o-sided printing jam occurs immediately after the power is turned on. .168
(8-2) Tw
o-sided printing jam occurs during taking in the paper
into Duplex unit. ........................................................................................169
(8-3) Tw
o-sided printing jam occurs in the process of reversing paper. .............169
(8-4) Two-sided printing jam occurs during transporting paper
inside the Duplex unit. ...............................................................................170
(8-5) Paper is not supplied from the Duple
x unit to the regist roller. ..................170
(9) Paper size error (error code 400) ........................................................................170
(9-1) Jam occurs when paper end is located near the IN1 sensor. ...................170
(10) ID unit Up/Down error (Ser
vice call 140 to 143)..................................................171
(10-1) Error occurs during the Up mo
vement of the ID unit ................................171
(10-2) Error occurs during the Do
wn movement of the ID unit ............................171
(11) Fuser unit error (error 170 to 177) .......................................................................
172
(11-1) Error occurs immediately after the pow
er is turned on. ............................172
(11-2) Error occurs approx.
1 minute after the power is turned on. .....................172
(12) Motor fan error (error code 122, 127, 128, 918, 051)
.........................................173
(12-1) The low v
oltage power supply fan does not rotate immediately
after the power is tur
ned on. .....................................................................173
(12-2) Duplex f
an does not rotate during the Duplex printing. .............................173
(12-3) All fans of the pr
inter do not rotate. ...........................................................173
(13) Print speed is slo
w. (Performance is low.) ...........................................................174
(13-1) Print speed decreases
. .............................................................................174
(14) Option unit cannot be recognized. .......................................................................
174
(14-2) Option try unit cannot be recogniz
ed. .......................................................174
(15) LED head cannot be recognized.
(error code 131, 132, 133, 134) .....................175
(15-1) Service call 131 to 134 (LED HEAD Missing)
...........................................175
(16) Toner car
tridge cannot be recognized. (error code 540, 541, 542, 543) ............176
(16-1) Error caused by the consumab
le items. ....................................................176
(16-2) Error caused by the toner sensor
.............................................................176
(16-3) Error caused by the def
ective mechanism ................................................177
(17) Fuse cut error (error codes 150 to 155) .............................................................
177
(17-1) Fuse cut error ...........................................................................................
177
(18) Humidity sensor error (error code 123) ...............................................................
178
(18-1) Humidity sensor error ...............................................................................
178
(19) Wiring diag
ram ....................................................................................................179

Oki C711 Specifications

General

Brand	Oki
Model	C711
Category	Printer
Language	English