MX-4100N, MX-4101N, MX-5000N, MX-5001N (serv.man31). Service Manual-Details Of Each Section-(L)Transfer Section - Sharp Copying Equipment Service Manual (repair manual). Page 2

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MX-4101N  TRANSFER SECTION  L – 2
B. Pro-reg sensor section
6
Primary transfer belt tension roller
Apply a tension to the transfer belt. 
7
Belt CL brush
Transfer belt back surface cleaning.
8
PTC opposing roller
Roller to flow a PTC current. 
9
Secondary transfer belt
Transfers toner images on the intermediate transfer belt to paper.
10
Secondary transfer roller
Transfers toner images on the intermediate transfer belt to paper.
11
Secondary transfer belt dirve roller
Drives the transfer belt.
12
Secondary transfer belt follower roller
Transfer belt follower.
13
PTC unit
Reduces the positive charges on the primary transfer belt.  
Signal name
Name
Function/Operation
PCSS
Color image density sensor PWB 
reflection plate shutter solenoid
Opens/closes the shutter of the process control and the resist sensor.
REGS_F
Color image density sensor/
Image registration sensor F
Detection of resist shift on the machine front (F) side, and detection of the color toner patch density.
REGS_R
Black image density sensor/
Image registration sensor R
Detection of resist shift on the machine rear (R) side, and detection of the black toner patch density.
No.
Name
Function/Operation
REGS_F
REGS_R
PCSS
CN6
R
SM2P
P
R
SM18P
P
B32B-PHDSS
REGS_R
4
/REGS_R_LED
3
D-GND
2
PCS_R
5
4
5VNPD
1
1
5VNPD
2
D-GND
3
D-GND
1
5VNPD
5
REGS_F
4
/REGS_F_LED
7
/REGS_F_LED
3
REGS_F
6
D-GND
NC
NC
5
5VNPD
8
PCS_CL
9
PCS_CL
7
10
5VNPD
2
5VNPD
9
D-GND
12
REGS_R
6
REGS_R
11
D-GND
4
13
/REGS_R_LED
16
NC
8
/REGS_R_LED
PCU PWB
2
/PCSS
2
14
/PCSS
11
/PCSS
1
24V3
1
15
24V3
13
24V3
17
NC
18
2
1
4
3
6
5
8
7
10
9
12
11
13
16
14
15
17
18
NC
5VNPD
1
D-GND
2
PCS_F
5
/REGS_F_LED
3
REGS_F
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