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MX-M503N  Dehumidifying heater  27 – 5

1)

Remove the screw, and remove the SPF glass and the glass
holder. Remove the table glass.

2)

Remove the paper exit cover.

1)

Attach the clamp (package part No. 16) to the scanner frame.

NOTE: When installing, be careful to prevent damage of the wire.

2)

Remove two screws from the scanner bottom.

3)

Connect the harness of the scanner heater. Install the heater
fixing plate of the scanner heater unit, and secure it with the
screw (M3x4 Round-tipped) (package part No. 17).

4)

Install the scanner heater and secure it with the screw (M4x6
Bind machine screw) (package part No. 18). Pass the harness
through the clamp.

NOTE: The convex part of the scanner heater must be inserted

into the hole of the scanner frame.

5)

Tighten the loose scanner heater harness by pulling it in the
arrow direction and secure it with the snap band (packing part
No. 19) then cut its tip to approx. 5 mm or less.

MX-M503N  Dehumidifying heater  27 – 6

6)

Move the lamp unit by hand and check that it move smoothly in
all movable area.

NOTE: Check that there is no interference of the harness of the

scanner heater in the wire and the 2/3 mirror unit.

1)

Install the paper exit cover.

2)

Install the table glass. Install the SPF glass and the glass
holder, and secure it with the screw.

1)

Turn on the dehumidifier heater switch.

2)

Measure the resistance value between the earth terminal and
the AC terminal (L side), and between the earth terminal and
AC terminal (N side) with the circuit tester, and confirm they
are not short-circuited.

3)

When not using the heater after checking, turn off the dehu-
midifier heater switch.

MX-M503N  MX-RP11  28 – 1

MX-M503N

Service Manual

 

1)

Check that all the items are included in the package.

<Note before installation>
* Before starting installation, check to insure that the data lamp on

the operation panel does not light up or blink. 

1)

Turn OFF the power switch on the operation panel.

2)

Open the front cabinet.
Turn OFF the power switch in the front cabinet of the main unit. 

3)

Disconnect the power plug of the main unit from the power out-
let. 

1)

Remove the screws, and remove the glass holder (A).
Remove the table glass (B).
Remove the screws, and remove the glass holding left OC (C).
Arrange the SPF glass unit (D) (package part No. 1) and
tighten the screws. 

1

SPF glass unit

1

2

Step screw R

1

3

SPF step screw R

1

4

Screw (M5 x 16)

2

1

2

3

4

: '10/Jun/18

MX-M503N  MX-RP11  28 – 2

2)

Cut the screw hole in the cabinet, and install the SPF step
screw R (a) (package part No. 3) and the step screw R (b)
(package part No. 2).

3)

Insert the SPF step screw R and the step screw R into the
screw hole in the hinge section of the RSPF unit. Slide the unit
toward the front side and close.

4)

Loosen the screw on the angle adjustment plate in the rear
side of the machine and lower the angle adjustment plate.

5)

Raise the RSPF unit upright, and fix it with the accessory
screw (M5 x 16) (package part No. 4). 

6)

Remove the connector cover. Connect the interface connector. 
Check to insure that the projection (A) of the interface connec-
tor is in the groove on the main unit side as shown in the fig-
ure.
Tighten the connector fixing screw.

7)

Remove the fixing tape. 

: '10/Jun/18