Konica Minolta bizhub 4750 bizhub 4750/4050 Maintenance/Troubleshooting User G - Page 6

[Maintenance/Troubleshooting]

1-3

1.1

Before getting started

1

-

When carrying this machine, be sure to fold the Manual Feed Tray and hold the parts shown below.

-

When the optional

Paper Feed Unit

is installed, be sure to carry it separately from this machine. Also,

do not hold handles (drawers) of the

Paper Feed Unit

. Doing so may damage the

Paper Feed Unit

.

-

Before connecting the power cable of this machine to the power outlet, check that internal components

removed at the time of cleaning have been installed to their original positions.

-

If your hand is stained by toner, wash it with cool water and neutral detergent.

7

WARNING

-

Before cleaning this machine, turn the power off, then disconnect the power cable and interface cable.

Exercise care not to spill water or detergent inside this machine. Doing so may cause a damage of this

machine or an electric shock.

7

CAUTION

-

When moving this product, always hold it at the locations specified in the User's Guide or other docu-

ments. If the unit is moved while held at locations other than those specified, it may fall, causing severe

personal injury.

-

If any toner enters your eyes, immediately wash them with cool water, then contact your doctor.

-

The inside of this machine may be hot. Wait until the surface has cooled to prevent yourself from being

burnt.

24 kg

53 lbs

Section	Page
Table of contents	2
1 Cleaning This Machine	5
1.1 Before getting started	5
1.2 Cleaning the outside of this machine	7
Control Panel	7
Exhaust Air Duct	7
Outer Covers	7
Original Glass	8
Original Cover Pad	8
2 Checking and Replacing Consumables	10
2.1 Checking the status of consumables	10
Consumables replacement messages	10
Checking the consumable level	10
2.2 Replacing consumables	11
2.2.1 Replacing a Toner Cartridge	11
Handling a Toner Cartridge	11
Storing Toner Cartridges	11
Replacement procedure	12
2.2.2 Replacing an Imaging Unit	13
2.2.3 Replacing a Staple Kit	15
3 Clearing Paper Jam and Staple Jam	19
3.1 To prevent a paper jam	19
3.2 When a paper jam has occurred	20
3.2.1 Clearing a paper jam in the Manual Feed Tray	20
3.2.2 Clearing a paper jam in Tray 1	21
3.2.3 Clearing a paper jam in Tray 2/3/4	22
3.2.4 Clearing a paper jam in ADF	23
3.2.5 Clearing a paper jam in the Front Cover	23
3.2.6 Clearing a paper jam in the Rear Cover	26
3.2.7 Clearing a paper jam in the Output Tray	27
3.2.8 Clearing a paper jam in the outlet of the Finisher	27
3.2.9 Clearing a paper jam in the rear of the Finisher	28
3.3 Troubleshooting for paper jam	30
3.4 Clearing a staple jam	32
4 Troubleshooting	35
4.1 The power is not turned on	35
4.2 The Touch Panel is not displayed	36
4.3 Cannot print	37
4.3.1 Cannot print	37
4.3.2 Problems on print quality	40
4.3.3 When the bit count does not match between the server and the client	41
4.4 Cannot perform network scanning	43
4.5 Cannot perform fax/internet fax	44
4.5.1 Cannot perform Fax TX	44
4.5.2 Cannot perform Fax RX	45
4.6 Cannot perform copy	46
4.7 Major messages and actions	48
Warning messages	48
Error messages	48
Service call	51
5 Checking the Counter	53

Konica Minolta bizhub 4750 bizhub 4750/4050 Maintenance/Troubleshooting User G - Page 6

WARNING, CAUTION, Before getting started, Paper Feed Unit

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