DOWNLOAD Sharp MX-5500N / MX-6200N / MX-7000N (serv.man65) Service Manual ↓ Size: 653.25 KB | Pages: 4 in PDF or view online for FREE

MX-7000N  PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION  N – 2

The shutter is provided on the monochrome (PCS_K) and color
(PCS_CL) process control sensor. When the shutter is opened (the
image density is corrected), the toner patch formed on the transfer
belt is scanned by the process control sensor and the information is
passed to the PCU.
When the shutter is closed, the gray resin section on the back of
the shutter is scanned to perform calibration of the sensor itself.
The shutter operation is controlled by the process control shutter
solenoid (PCSS).

The registration sensor is attached to the F side (REG_F) and the
R side (REG_R). When the shutter is opened, the registration
image formed on the transfer belt is scanned by the sensor and the
information is passed to the PCU.

1)

Remove the toner cartridge (BK/C/M/Y). (Refer to the "[K]
TONER SUPPLY SECTION".)

2)

Remove the development unit (BK). (Refer to the "[L] DEVEL-
OPING SECTION".)

3)

Remove the charge unit (BK) and OPC drum unit (BK). (Refer
to the "[J] PHOTOCONDUCTOR SECTION".)

4)

Remove the primary transfer unit. (Refer to the “[M] TRANS-
FER SECTION”.)

5)

Remove the paper exit tray. (Refer to the "[A] EXTERNAL
OUTFIT".)

1

Process 
control 
registration 
sensor unit

a

Process control sensor 
PWB

✕

 {

N - 3

b

Registration PWB F

✕

 {

c

Registration PWB R

✕

 {

d

Process control shutter 
solenoid

–

N - 3

1

Process control registration sensor unit

MX-7000N  PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION  N – 3

6)

Disconnect the connector (A). Remove the screw (B), and
remove the process control registration sensor unit (C).

1)

Remove the process control registration sensor unit. (Refer to
the "(1) Process control registration sensor unit)");

2)

Push up the shutters (A), and clean the process control sensor
PWB (B), the registration sensor PWB F (C), and the registra-
tion sensor PWB R (D) .

1)

Remove the toner cartridge (BK/C/M/Y). (Refer to the "[K]
TONER SUPPLY SECTION".)

2)

Remove the development unit (BK). (Refer to the "[L] DEVEL-
OPING SECTION".)

3)

Remove the charge unit (BK) and OPC drum unit (BK). (Refer
to the "[J] PHOTOCONDUCTOR SECTION".)

4)

Remove the primary transfer unit. (Refer to the “[M] TRANS-
FER SECTION”.)

5)

Remove the paper exit tray. (Refer to the "[A] EXTERNAL
OUTFIT".)

6)

Remove the process control registration sensor unit. (Refer to
the "(1) Process control registration sensor unit".)

7)

Disconnect the connector (A). Remove the screw (B), and
remove the process control shutter solenoid (C) so that it lift up
from the connector side.
* When installing, hook cut-out portion (D) of the shutter move

plate to the process control shutter solenoid.

1

Process control 
registration sensor 
unit

a

Process control sensor PWB

✕

 {

b

Registration sensor PWB F

✕

 {

c

Registration sensor PWB R

✕

 {

1

Process control 
registration sensor 
unit

d

Process control shutter solenoid

MX-7000N  PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION  N – 4

✕

 : Check  { : Clean  ▲ : Replace   U : Adjust  ✩ : Lubricate   † : Shift the position

(Clean, replace, or adjust according to necessity.)

1

Sensors

Mechanical 

parts

✕

{

{

{

{

{

{

{

{

{

{

1

MX-7000N  PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION  N – 4

✕

 : Check  { : Clean  ▲ : Replace   U : Adjust  ✩ : Lubricate   † : Shift the position

(Clean, replace, or adjust according to necessity.)

1

Sensors

Mechanical 

parts

✕

{

{

{

{

{

{

{

{

{

{

1