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MX-4101N  PWB SECTION  P – 1

MX-4101N

Service Manual

 

(Countermeasures against static electricity)
When handling the PWB and the electronic parts, be sure to
observe the following precautions in order to prevent against dam-
age by static electricity.
1)

When in transit or storing, put the parts in an anti-static bag or
an anti-static case and do not touch them with bare hands.

2)

When and after removing the parts from an anti-static bag
(case), use an earth band as shown below:
• Put an earth band to your arm, and connect it to the

machine.

• When repairing or replacing an electronic part, perform the

procedure on an anti-static mat.

1)

Remove the right cabinet rear cover.

2)

Remove the screw, and pull out the MFP cnt PWB.

* When placing the HDD on the upper side, do not apply an

excessive force to the DIMM memory. So remove it or put a
spacer.

a

DIMM memory PWB (512MB)

b

DIMM memory PWB (1GB)

c

PROG1 ROM PWB

d

PROG2 ROM PWB

e

MFP cnt PWB

f

HDD

g

PCU Flash ROM PWB

h

PCU PWB

i

Mother  PWB

d

a

a

c

f

b

e

g

h

i

MX-4101N  PWB SECTION  P – 2

* Inserting position an inserting procedure when the DIMM

memory is removed

DIMM1: Option
DIMM2: 1GB
DIMM3: 512MB
DIMM4: Reserved (No option)
DIMM5: 512MB

3)

Stopper (A) with your finger to release the lock of the memory
PWB.

4)

When the lock is released, the memory PWB tilts. Pull it out
under that state.
* Be sure to release the lock before pulling it out.
* Do not touch the IC on the memory PWB.

* Note for removing procedure of the memory PWB

Remove the PWB inside the tilt of the memory PWB first.
(Removing the IC outside the tilt will result in poor efficiency
of work.)

* Note for installing procedure of the memory PWB

Install the PWB outside the tilt of the memory PWB first.
(Installing  the IC inside the tilt will result in poor efficiency
of work.)

a)

Tilt the memory PWB and fit with the connector port. Put
the memory PWB up to the line (A) in the figure.
* When inserting, be sure to hold the both ends and be

sure not to touch the IC on the PWB.

b)

Push the memory PWB which is kept tilted fully to the
bottom.
* Be careful not to tilt left and right.
* The gold plated section must be hidden.

DIMM1

DIMM2

DIMM3

DIMM4

DIMM5

Inside

Outside

Inside

Outside

Inside

Outside

Inside

Outside

About 15

[ Tilting left and right ]

[ The gold plated
section can be seen ]

[ Normal ]

MX-4101N  PWB SECTION  P – 3

c)

Raise the memory PWB until the connector stopper
clicks.
* Check to confirm that the lock pin (A) is in the center

of the lock hole.

* The stopper (B) must penetrate inside the PWB.

5)

Release the lock, and remove the PROG1 ROM PWB (A) and
the PROG2 ROM PWB (B).

6)

Disconnect the connector and remove the screw, and remove
the MFP cnt PWB.

1)

Remove the right cabinet rear cover.

2)

Remove the screw, and pull out the MFP cnt PWB.

3)

Disconnect the connector and remove the screw, and remove
the HDD unit.

4)

Remove the screw, and remove the angle from the HDD.
* Since the HDD is weak to shock, carefully treat it without

knocking the edge of the HDD or falling or applying a shock.

1)

Remove the screw, and remove the rear cabinet lid.

A

B

MX-4101N  PWB SECTION  P – 4

2)

Remove the PCU Flash ROM PWB.

1)

Remove the rear cabinet.

2)

Remove the PCU Flash ROM PWB.

3)

Disconnect the connector and remove the screw, and remove
the PCU PWB.

1)

Remove the rear cabinet.

2)

Disconnect the connector and remove the screw, and remove
the mother PWB.

1)

Remove the rear cabinet.

2)

Remove the screw, the reactor and disconnect the connector,
and remove the AC power PWB.

1)

Remove the rear cabinet.

2)

Open the control box.

a

AC power PWB

b

DC power PWB

a

b