Periodic (every month) cleaning is necessary to use the printer in good condition.

•	Do not insert or drop metal or flammable objects into the printer through openings such as a fresh air inlet. It could lead to an electric shock and fire.
•	When foreign substances or liquids such as water entered the printer, do not use the printer as it is. It could lead to an electric shock and fire. Immediately turn OFF the power switch, disconnect the power plug from the electric socket, and contact MUTOH local dealer.

•	When cleaning the printer, be sure to turn OFF the power and disconnect the power plug.
•	Do not use volatile solvents such as thinner, benzene, or alcohol. These could damage the paint.
•	Be careful that moisture does not enter the printer. There is a possibility that electric circuit inside the printer is short circuited.
•	Do not open covers attached with screws under any circumstance. There is a possibility that the printer gets an electric shock or has a malfunction.

This section describes how to clean each part of the printer.

6.2.1 Cleaning the outer case

This sub-section describes the cleaning steps of the outer case.
Wipe out the dust and dirt adhered to the outer case by using a soft cloth.

6.2.2 Cleaning inside the printer

This sub-section describes the cleaning steps inside the printer.

Clean inside the printer according to the following steps.

Open the front cover.

No.

Name

Front cover

For pressurizing roller, remove paper powder and dust using a soft brush.

•	Do not blow paper powder adhered inside the printer using tools such as an air duster. It may cause abnormal noise from inside the printer.

No.

Name

Pressurizing roller

For platen and media guide, wipe out paper powder and ink using a damp and tightly squeezed soft cloth.

No.

Name

Platen

Media guide

For grid roller, wipe off the dirt of the unpainted (silver color) area of the center section with damp and tightly squeezed soft cloth.

No.

Name

Grid roller

6.2.3 Head cleaning

If printed data becomes blurred or is incomplete, perform cleaning of the head surface and nozzle. (Head cleaning)

Perform head cleaning in accordance with the following steps.

•	Remove media while cleaning. Cleaning when media is loaded may cause the contact of the head and media.

1	Check that the operation panel is Normal.

2	Check that the media loading lever is returned to the front side.

Press the [>] key on the operation panel to select the cleaning mode.

Press the [Cleaning] key on the operation panel for at least 2 seconds.

•	The operation panel displays "Cleaning **%".

5	Start head cleaning.

•	If you fail to remove blurs or incompleteness of printing in one head cleaning, perform strong cleaning.
•	If you fail to remove blurs or incompleteness of printing with several head cleanings, refer to "7 Troubleshooting ", and perform adequate process.

6.2.4 Cleaning the cleaning wiper

This sub-section describes the cleaning steps of the cleaning wiper.

(1) Cleaning time

Once a week or when blurs or incompleteness in printing remain after head cleaning.

(2) Cleaning steps

Follow the steps below to clean the cleaning wiper.

•	Use the poly-knit wiper when cleaning the cleaning wiper. For the poly-knit wiper, refer to" 8.3 Options/Supply list " .

If the printer is turned ON, make sure the following.

•	Printing or other operations are not in progress.
•	Make sure that the display on the operation panel is in the normal state.

"4.3 Menu setup on the operation panel " is referred, and display the CR Maintenance menu.

5.1.17 CR Maintenance menu

•	The operation panel displays "CR Maintenance: Start".

Press the [Enter] key on the operation panel.

•	The printer starts cleaning the cleaning wiper.
•	The operation panel displays "CR Maintenance: End".

Open the front cover.

No.

Name

Front cover

•

While cleaning with the cleaning wiper

•	Do not touch the cleaning wiper and head cap unit. Head cleaning may not be operated correctly because of the grease attached.
•	Ensure to wipe the print head with a dry poly-knit wiper. A wet poly-knit wiper may cause the print head to clog.

Use the poly-knit wiper, and remove the ink and dust on the cleaning wiper.

Cleaning wiper front side:
Wipe horizontally.

No.

Name

Cleaning wiper

Poly-knit wiper

Head cap unit

Cleaning wiper back side:
Wipe vertically.

No.

Name

Cleaning wiper

Poly-knit wiper

Head cap unit

Press the [Enter] key on the operation panel.

•	The print head section returns to the original position.
•	The cleaning wiper returns to the original position.
•	The operation panel displays "CR Maintenance: Start".

Press the [Cancel] key on the operation panel.

•	The printer enters normal status.
•	Cleaning of the cleaning wiper is complete.