TROUBLESHOOTING

Check the following troubleshooting list before requesting service as many problems can be fixed by the user. If you are unable to solve the problem by checking the list, turn off the main power switch and the power switch, and unplug the power cord.

Problems related to the copy function are described below. For problems related to general use of the machine, see page 2-32.

Problem

 

Check

Solution

 

 

 

 

 

Machine does

not

Is the [START] key indicator off?

This indicates that the machine is warming

operate.

 

 

 

up (warming up lasts no more than 120

 

 

 

 

 

seconds after the power switch is turned on).

 

 

 

 

 

Copying is not possible during this time. Wait

 

 

 

 

 

until the [START] key light illuminates.

 

 

 

 

Copies are too dark

Is the original image too dark or too light?

Select an appropriate exposure mode for the

or too light.

 

 

 

original being copied and adjust the copy

 

 

 

 

 

exposure. (See page 4-14.)

 

 

 

 

 

 

 

 

 

 

 

Is the exposure mode set to "AUTO"?

The exposure level for "AUTO" can be

 

 

 

 

 

adjusted using "Exposure adjustment" in the

 

 

 

 

 

administrator settings. Contact

your

 

 

 

 

 

administrator. (See page 16 of

the

 

 

 

 

 

administrator settings guide.)

 

 

 

 

 

 

 

 

 

 

 

An appropriate exposure mode for the

Change the exposure mode to "AUTO" or

 

 

 

 

original has not been selected.

manually select an appropriate resolution

 

 

 

 

 

setting. (See page 4-14.)

 

 

 

 

Text is not clear on a

An appropriate exposure mode for the

Change the exposure mode to "TEXT". (See

copy.

 

 

 

original has not been selected.

page 4-14.)

 

 

 

 

 

Smudges appear on

Document glass or document cover dirty?

Clean regularly. (See page 6-2.)

 

copies.

 

 

 

 

 

 

 

 

 

Black lines appear on copies when the

Clean the original scanning area. (See page

 

 

 

 

 

 

 

 

automatic document feeding function is

6-2.)

 

 

 

 

 

used.

 

 

 

 

 

 

 

 

 

 

 

 

 

Original smudged or blotchy?

Use a clean original.

 

 

 

 

 

 

Image

cannot

be

Is the auto paper select or auto image

Rotation copy functions only if the machine

rotated.

 

 

function selected?

is either in the auto paper select mode or in

 

 

 

 

 

the auto image mode. (See page 4-15.)

 

 

 

 

 

Part

of

original

Is the original positioned correctly?

Set the original properly. (See page 4-3.)

image is not copied.

 

 

 

Is the copy ratio proper for the original and

Use the auto image function to select the

 

 

 

 

 

 

 

 

paper sizes?

appropriate copy ratio based on the original

 

 

 

 

 

and copy sizes. (See page 4-15.)

 

 

 

 

 

 

Blank copies

 

 

Is the original placed correctly?

When using the document glass, place the

 

 

 

 

 

original face down.

 

 

 

 

 

 

When using the automatic document feeder,

 

 

 

 

 

place original face up. (See page 4-3.)

 

 

 

 

 

 

Order

of

copies

Is the order of originals correct?

When using the document glass, place the

incorrect

 

 

 

originals from the first page one sheet at a

 

 

 

 

 

time.

 

 

 

 

 

 

When using the automatic document feeder,

 

 

 

 

 

place the originals with the first page up.

 

 

 

 

Job

cancellation

Is a message requesting cancellation of job

Press the [CA] key to cancel the current job.

needed

 

 

 

displayed?

 

 

 

 

 

 

 

 

 

6

6-3

Page 156 Page 158
Page 157
Image 157
Sharp MX-M550U, MX-M700N, MX-M620N, MX-M700U, MX-M550N, MX-M620U specifications Troubleshooting
Page 156 Page 158

MX-M620U, MX-M550N, MX-M700U, MX-M620N, MX-M550U specifications

The Sharp MX-M620U, MX-M550U, MX-M620N, MX-M700U, and MX-M550N are a series of multifunctional printers that cater to the varying needs of modern businesses. These devices are designed to deliver high-quality output, efficient performance, and advanced functionalities, making them an ideal choice for offices that prioritize productivity and ease of use.

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In summary, the Sharp MX-M620U, MX-M550U, MX-M620N, MX-M700U, and MX-M550N provide high-speed printing, impressive image quality, comprehensive security, and versatile connectivity options, establishing themselves as reliable assets in any workplace. Their blend of innovative technology, user-friendly features, and eco-conscious design makes them suitable for both small offices and large enterprises looking to enhance operational efficiency.
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