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MX-DE28 N  MAINTENANCE  3 – 7

1)

Remove the paper feed tray.

2)

Remove the tray paper feed unit.

3)

Clean the transport roller 1.

1)

Open the right door.

2)

Clean the transport roller 2.

1)

Pull out the tandem tray.   

2)

Remove the paper feed roller holder.

3)

Remove the paper pickup roller and the paper feed roller.

1

Paper pickup roller

2

Paper feed roller

3

Separation roller

4

Torque limiter

4

2

1

3

Ĭ

Ĭ

ĭ

MX-DE28 N  MAINTENANCE  3 – 8

1)

Pull out the tandem tray.   

2)

Open the right door.   

3)

Remove the separation roller.

4)

Remove the torque limiter.

1)

Remove the paper feed tray.   

2)

Clean the horizontal transport roller L and the horizontal trans-
port roller R.

1)

Open the right door.   

2)

Clean the transport roller 3. 

ĭ

1

Horizontal transport roller L

2

Horizontal transport roller R

3

Transport roller 3

1

2

3

MX-DE28 N  MAINTENANCE  3 – 9

1)

Loose the 4 red screws at the font and the rear of the tandem
tray. 
To adjust the off-center, make the width of the plate shown in
the figure and the paper length + 1mm being the same length. 

Paper length +1mm

Plate

Red screw

Red screw

Plate

MX-DE28 N  OPERATIONAL DESCRIPTIONS  4 – 1

MX-DE28 N

Service Manual

 

CPFM

Desk paper feed motor

This motor drives the paper feed and transport sections.

C2LUD

Paper feed tray 2 upper limit detector

This detector detects when the tray in paper feed tray reaches its upper limit.

C2LUM

Paper feed tray 2 lift-up motor

This motor lifts up the tray in paper feed tray.

C2PED

Paper feed tray 2 paper empty  detector

This detector detects when there is paper in paper feed tray.

C2PFC

Paper feed tray 2 transport clutch

This clutch controls the ON/OFF status of the  transport roller 1.

C2PFD

Paper feed tray 2 paper transport  detector

This detector detects when paper is in the transport path for paper feed tray.

C2PUC

Paper feed tray 2 paper feed clutch

This clutch controls the ON/OFF status of the paper feed roller (paper feed tray 2).

C2SPD

Paper feed tray 2 paper level detector

This detector detects the amount of paper remaining in paper feed tray.

C2SS1

Paper feed tray 2 paper rear edge detector 1

The paper feeder recognizes that the tray for paper feed tray has been inserted when any of paper 
feed tray paper rear edge detector 1 to 4 turns ON.
This detector detects the paper size of the tray in paper feed tray.

C2SS2

Paper feed tray 2 paper rear edge detector 2

C2SS3

Paper feed tray 2 paper rear edge detector 3

C2SS4

Paper feed tray 2 paper rear edge detector 4

C2SSSET

Paper feed tray 2 attachment detection detector

This detector detects when paper feed tray is attached.

DSW-C2

Paper feed tray 2 open/close detection detector

This detector detects when the right door is opened or closed.

C2SS1
C2SS3

C2SS2
C2SS4

C2SSSET_D

C2SPD

C2LUD

C2PED

DSW-C2

C2PFD

1

2

3

4

5

6

6

7

C2PUC

CLUM2

CPFM

C2PFC