MX3500N PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION M – 1
MX3500N
Service Manual
[M] PROCESS CONTROL SENSOR, REGISTRATION SENSOR SECTION
1. Electrical and mechanism relation diagram
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).
B. Registration sensor control
The registration sensor is attached to the F side (REGS_F) and the
R side (REGS_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.
Signal name
Name
Function/Operation
PCS_CL/K
Process control sensor
Detects the toner patch density.
PCSS
Process control shutter solenoid
Opens/closes the shutter of the process control and the registration sensor.
REGS_F/R
Registration sensor
Detects the registration shift.
PCSS
PCS_CL/K
REGS_F
REGS_R
CN17
RESI SENSOR F
PROCON SENSOR
RESI SENSOR R
R
SM2P
P
R
SM18P
P
B32B-PHDSS-B
DF11-6DP-SP1
/PCSS
24V3
PCS_LED#
5VNPD
D-GND
14
15
5VNPD
D-GND
REGS_F
REGS_F_LED#
5VNPD
D-GND
PCS_CL
PCS_K
9
10
11
12
2
1
/PCSS
24V3
2
1
4
3
2
1
5VNPD
D-GND
REGS_R
REGS_R_LED#
PCS_LED#
5
4
3
2
1
5VNPD
D-GND
PCS_CL
PCS_K
REGS_F
REGS_F_LED#
4
3
2
1
5VNPD
D-GND
1
2
3
4
5
6
7
8
1
20
REGS_F
25
D-GND
22
REGS_F_LED#
REGS_R
24
REGS_R_LED#
23
5VNPD
27
D-GND
26
2
3
4
5
6
7
8
9
10
11
12
13
14
15
13
REGS_R
REGS_R_LED#
19
PCS_K
18
PCS_LED#
21
PCS_CL
28
D-GND
PCU
PWB
1
5
6
2
3
4
17
/PCSS
16
24V3
5VNPD
5VNPD
5VNPD
5VNPD
5VNPD
5VNPD
Summary of Contents for MX 3501N - Color Laser - Copier
Page 64: ...MX3500N ADJUSTMENTS 6 19 E F Yellow C D Magenta A B Cyan ...
Page 390: ...MX3500N PHOTOCONDUCTOR SECTION i 7 3 6 7 9 8 10 2 5 7 9 1 4 11 ...
Page 444: ...Memo ...
Page 445: ...Memo ...