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MX-7001N PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION N – 1
MX-7001N
Service Manual
[N] PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION
1. Electrical and mechanism relation diagram
Signal
Name
Function/Operation
PCS_CL/
PCS_K
PCS_K
Process control sensor PWB
Detects the toner patch density
PCSS
Process control shutter solenoid
Opens/closes the shutter of the process control and the registration sensor.
REG_F
Registration sensor PWB F
Detects the shift of registration image
REG_R
Registration sensor PWB R
PCSS
REG_R
PCS_CL/PCS_K
REG_F
P
C
U
P
W
B
R
SM18P
P
P
DF1B-32P
S
P
DF1B-18DE
S
CN8
PHR-4
PHR-5
PHR-4
R
SM2P
P
B40B-PNDZS-1
5VNPD
D-GND
PCS_LED#
PCS_CL
10
/PCSS
11
9
2
1
7
8
14
15
12
/PCSS
24V3
2
1
4
3
2
1
5VNPD
D-GND
REG_R
REG_R_LED#
PCS_LED#
5
4
3
2
1
5VNPD
D-GND
PCS_CL
PCS_K
REG_F
REG_F_LED#
4
3
2
1
5VNPD
D-GND
3
1
2
5VNPD
D-GND
REG_F
6
21
REG_F
5VNPD
REG_R_LED#
29
5VNPD
30
D-GND
31
REG_R
36
/PCSS
35
24V3
14
15
10
11
12
13
7
2
3
4
5
PCS_K
6
1
13
REG_R
REG_R_LED#
REG_F_LED#
5VNPD
D-GND
4
5
26
27
25
8
9
32
23
5VNPD
20
1
3
D
-GND
3
5VNPD
1
2
5VNPD
5
R
EG_F
5
7
REG_F_LED#
7
9
5VNPD
9
11
D-GND
11
13
PCS_K
13
15
PCS_CL
15
17
PCS_LED#
17
18
5VNPD
18
2
D
-GND
2
4
R
EG_R
4
6
REG_R_LED#
6
10
24V3
10
24
8
/PCSS
8
D-GND
PCS_K
19
D-GND
22
REG_F_LED#
PCS_LED#
PCS_CL
2
4
D
-GND
4
6
REG_F
6
8
REG_F_LED#
8
10
5VNPD
10
12
D-GND
12
14
PCS_K
14
16
PCS_CL
16
18
PCS_LED#
18
20
5VNPD
20
22
D-GND
22
24
REG_R
24
26
REG_R_LED#
26
24V3
30
28
/PCSS
28
30
24V3
MX-7001N PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION N – 2
2. Operational descriptions
A. Process control sensor control
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).
(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).
B. Registration sensor control
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.
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.
3. Disassembly and assembly
A. Process control registration sensor unit
(1) Process control registration sensor unit
1)
Remove the toner cartridge (BK/C/M/Y). (Refer to the "[K]
TONER SUPPLY SECTION".)
TONER SUPPLY SECTION".)
2)
Remove the development unit (BK). (Refer to the "[L] DEVEL-
OPING SECTION".)
OPING SECTION".)
3)
Remove the charge unit (BK) and OPC drum unit (BK). (Refer
to the "[J] PHOTOCONDUCTOR SECTION".)
to the "[J] PHOTOCONDUCTOR SECTION".)
4)
Remove the primary transfer unit. (Refer to the “[M] TRANS-
FER SECTION”.)
FER SECTION”.)
5)
Remove the paper exit tray. (Refer to the "[A] EXTERNAL
OUTFIT".)
OUTFIT".)
Unit
Parts
Mainte
nance
Page
1
Process
control
registration
sensor unit
control
registration
sensor unit
a
Process control sensor
PWB
PWB
✕ {
N - 3
b
Registration PWB F
✕ {
c
Registration PWB R
✕ {
d
Process control shutter
solenoid
solenoid
–
N - 3
Unit
1
Process control registration sensor unit
1
1-c
1-b
1-a
1-d
1
MX-7001N 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).
remove the process control registration sensor unit (C).
a. Process control sensor PWB, Registration sensor PWB F,
Registration sensor PWB R
1)
Remove the process control registration sensor unit. (Refer to
the "(1) Process control registration sensor unit)");
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) .
PWB (B), the registration sensor PWB F (C), and the registra-
tion sensor PWB R (D) .
b. Process control shutter solenoid
1)
Remove the toner cartridge (BK/C/M/Y). (Refer to the "[K]
TONER SUPPLY SECTION".)
TONER SUPPLY SECTION".)
2)
Remove the development unit (BK). (Refer to the "[L] DEVEL-
OPING SECTION".)
OPING SECTION".)
3)
Remove the charge unit (BK) and OPC drum unit (BK). (Refer
to the "[J] PHOTOCONDUCTOR SECTION".)
to the "[J] PHOTOCONDUCTOR SECTION".)
4)
Remove the primary transfer unit. (Refer to the “[M] TRANS-
FER SECTION”.)
FER SECTION”.)
5)
Remove the paper exit tray. (Refer to the "[A] EXTERNAL
OUTFIT".)
OUTFIT".)
6)
Remove the process control registration sensor unit. (Refer to
the "(1) Process control registration sensor unit".)
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
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.
Unit
Parts
Mainte
nance
1
Process control
registration sensor
unit
registration sensor
unit
a
Process control sensor PWB
✕ {
b
Registration sensor PWB F
✕ {
c
Registration sensor PWB R
✕ {
A
B
C
1
1-c
1-b
1-a
A
B
D
C
1-a
1-b
1-c
Unit
Parts
1
Process control
registration sensor
unit
registration sensor
unit
d
Process control shutter solenoid
1-d
A
B
C
1-d
D
MX-7001N PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION N – 4
4. Maintenance
✕ : Check (Clean, replace, or adjust according to necessity.) {: Clean ▲ : Replace U: Adjust ✩ : Lubricate : Shift the position.
No.
Part name
Monochrome
supply,
Mechanical
parts
When
calling
300
K
600
K
900
K
1200
K
1500
K
1800
K
2100
K
2400
K
2700
K
3000
K
Remark/Refer to
the Parts Guide.
the Parts Guide.
Block/Item No.
(Only the
replacement
parts are
described.)
1
Sensors
Mechanical
parts
✕
{
{
{
{
{
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{
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{
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1