Ricoh Sp C410dn Service Manual

							Cleaning the Paper Feed Roller
139
7
ESlide the green lock lever to the right ( ), so that the paper feed roller can
be released ( ).
FWipe the rubber part of the roller with a soft damp cloth. After that, wipe
it with a dry cloth to remove the water.
Do not use chemical cleaner or organic solvent such as thinner or benzene.
GWhile sliding the green lock lever to the right ( ), set the paper feed roller
to its original position ( ). After that, return the green lock lever to its orig-
inal position ( ).
Confirm that the green lock lever secures the roller correctly by confirming
that the roller rotates smoothly.
AET402S
AET401S 
						

							Cleaning the Printer
140
7
HMove the printer back to its original position. Lift the front of the tray, and
slide it carefully into the printer until it stops.
Do not slide the paper tray in with force. If you do, the front and side guides
might move.
IInsert the plug of the power cord into the wall socket securely. Connect all
the interface cables that were removed.
JTurn on the power switch.
Note
❒Follow the same procedure to clean the paper feed roller of the optional Pa-
per Feed Unit.
AET045S 
						

							Cleaning the Registration Roller
141
7 Cleaning the Registration Roller
R CAUTION:
Clean the registration roller if dots (caused by specks of paper stuck to the roller)
appear on printed OHP transparencies. 
ATurn off the power, and then unplug the power cable.
BCarefully open the printers front cover (A) of by pulling left and right side
levers.
CSet the registration roller as shown. The inside of this printer becomes very hot. Do not touch parts labelled “v” 
(indicating a hot surface). Touching these parts will result in burns.
AQC018S
AQC171S 
						

							Cleaning the Printer
142
7
DClean the registration roller by applying a soft damp cloth while turning it.
 Do not use chemical cleaners or organic solvents such as thinners or ben-
zene.
 Do not touch the belt of the transfer unit and transfer roller.
ECarefully close the front cover (A).
FPlug in the power cable, and then turn on the power.
AQC172S 
						

							143
8. Adjusting the Printer
Adjusting the Color Registration
After moving the printer, printing on thick paper, or printing repeatedly for
some time, color degradation may occur. By performing color registration ad-
justment, you can restore optimum print quality.
If documents show color degradation after the printer is moved, perform auto-
matic color adjustment.
APress the {Menu} key.
BSelect [Maintenance] using {T} or {U}, and then press the {OK} key.
CSelect [Quality Maintenance] using {T} or {U}, and then press the {OK} key.
DSelect [Colour Registration] using {T} or {U}, and then press the {OK} key.
AQC001S
Y M C K 
						

							Adjusting the Printer
144
8
EOn the cofirmation screen, press[OK].
Automatic color adjustment begins.
Automatic color adjustment takes about 50 seconds. 
A confirmation message appears when complete. Press [Exit].
FPress the {Menu} key to return to the initial screen. 
						

							Correcting the Color Gradation
145
8 Correcting the Color Gradation
Color gradation during color printing changes slightly, depending on a number
of factors. If you print the same file repeatedly or toner was recently replaced,
changes may occur in color tones. When this happens, to obtain suitable print re-
sults, color gradation can be corrected, although it is not usually necessary to
make any particular settings.
Note
❒If suitable results cannot be obtained after a single operation, repeat the cor-
rection several times, as needed.
❒Corrections to color gradation will be applied to all user jobs.
❒Use the same type of paper when printing a run of gradation corrections. If a
different type of paper is used, corrections may not be apparent.
❒This requires the use of the supplied Color Calibration Sample Sheet.
❒Corrections to color gradation are performed in the following order:
APrint gradation correction sheet 1.
BAdjust the parts of highlight colors.
Set the correction value.
Print the gradation correction sheet, and then check the result of the cor-
rection.
CPrint gradation correction sheet 2.
DAdjust the parts of middle colors.
Set the correction value.
Print the gradation correction sheet, and then check the result of the cor-
rection.
ESave the correction value.
Reference
For details about how to view the gradation correction sheet, see p.149 “View-
ing the Color Calibration Sample Sheet and Gradation Correction Sheet”. 
						

							Adjusting the Printer
146
8
Set the Gradation Correction Value
During printing, you can correct the gradation in two areas: bright part (high-
light) and the medium (middle). The correction value for the highlight and the
medium parts are set using [Print Sheet 1] and [Print Sheet 2] respectively.
APress the {Menu} key.
BSelect [Maintenance] using {T} or {U}, and then press the {OK} key.
CSelect [Quality Maintenance] using {T} or {U}, and then press the {OK} key.
DSelect [Colour Calibration] using {T} or {U}, and then press the {OK} key.
AQC001S
Y M C K 
						

							Correcting the Color Gradation
147
8
EIf you want to perform only auto color adjusting, select [Adjust Auto Density]
using {T} or {U}, and then press the {OK} key.
The confirmation message appears. press [OK].
 When it is completed, the confirmation message appears. press [Exit].
FIn the Caribration menu, select [Print Sheet 1] or [Print Sheet 2] using {T} or
{U}, and then press the {OK} key.
The confirmation message appears. press [Print].
GWhen printing is complete, the confirmation message appears. press [Con-
tinue].
If you want to exit from this menu, press [Exit].
HSelect the color you want to adjust using {T} or {U}, and then press the
{OK} key.
IAdjust the selected colors setting by entering value using {T} or {U}, an
then press the {OK} key. 
						

							Adjusting the Printer
148
8
JPress [Result] to check the result by printing the calibration sheet.
On the confirmation screen, press [Print].
KAfter printing, press [Yes] to save the settings.
LAfter completing all settings, press the {Menu} key to return to the initial
screen.