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Problem
Solution
The message "Processing..." does not
appear on the control panel after
printing.
If the message "Processing..." does not appear on the control
panel after printing, the printer has not received the data.
If the printer is connected to the computer using the interface
cable.
Check the port connection setting is correct.
Network Connection
Contact your network administrator.
Black gradation is not natural.
Only when using PostScript 3
Select [CMY + K] for [Gray Reproduction] in the printer
driver's dialog box.
See the printer driver Help.
Solid lines are printed as broken
lines.
Only when using PostScript 3
Change the [Dithering] setting in the printer driver's
dialog box.
See the printer driver Help.
Fine dot patterns do not print.
Only when using PostScript 3
Change the [Dithering] setting in the printer driver's
dialog box.
See the printer driver Help.
Solid areas, lines or text are shiny or
glossy when created as a mixture of
cyan, magenta, yellow.
Only when using PostScript 3
Select [Black by K] for [Gray Reproduction] in the printer
driver's dialog box.
See the printer driver Help.
Speckling occurs in areas of solid
black print.
Only when using PostScript 3
Select [CMY + K] for [Gray Reproduction] in the printer
driver's dialog box.
See the printer driver Help.
Printer Problems
381
Summary of Contents for M C251FW
Page 2: ......
Page 23: ...3 2 1 ECC105 Interior ECC106 4 3 2 1 Guide to Components 21 ...
Page 45: ...Deleting characters 1 Press to delete characters Entering Characters 43 ...
Page 48: ...1 Guide to the Machine 46 ...
Page 82: ...2 Paper Specifications and Adding Paper 80 ...
Page 100: ...3 Printing Documents 98 ...
Page 124: ...4 Copying Originals 122 ...
Page 170: ...5 Scanning Originals 168 ...
Page 216: ...6 Sending and Receiving a Fax 214 ...
Page 270: ...7 Configuring the Machine Using the Control Panel 268 ...
Page 346: ...6 Close the ADF cover 9 Maintaining the Machine 344 ...
Page 360: ...Main unit DUE292 1 3 2 1 DUE288 2 DUE289 10 Troubleshooting 358 ...
Page 361: ...3 DUE290 Waste toner bottle ECC168 Paper feed unit DUE320 1 Removing Paper Jams 359 ...
Page 440: ...12 Appendix 438 ...
Page 445: ...MEMO 443 ...
Page 446: ...MEMO 444 EN GB EN US EN AU M0EQ 8504A ...
Page 447: ......
Page 448: ...EN GB EN US EN AU M0EQ 8504A 2021 2022 Ricoh Co Ltd ...