Read Sharp AR-M351U / AR-M451U (serv.man11) Service Manual online
AR-M351U/M451U, AR-M355U/M455U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 16
[Developing section]
A. General
In this section, toner is attached to electrostatic latent images
formed by laser beams on the OPC drum, making visible images.
formed by laser beams on the OPC drum, making visible images.
B. Major parts and signal functions
TCS
HUS-DV
TH-DV
TH-DV
2
3
3
1
TCS
HUS-DV
TH-DV
TH-DV
TM1
DM
HUS-DV
TCS
+24V1
GND2
+5V2
DVBias
QR/P8-12S-C(01)
5
6
7
8
1
6
7
8
GND2
TCS
+24V1
1
2
3
2
+5V2
1
Bias
10
11
12
10
11
12
9
9
HUS-DV
3
ZHR-4
GND2
Bias
4
(NC)
51021-0400
3
4
1
2
2
3
4
5
DVCH1
DVCH2
DVCH3
GY
GY
RD
BL
BR
BR
GY
RD
BL
BR
WH
GY
TH-DV
GND2
BR
BR
BR
BR
BR
BR
4
TH-DV
GND2
GY
BR
WH
#187
CN8
7
1
2
3
4
5
6
8
9
10
11
+5V2
TCS
GND2
DVCH3
GND2
+24V1
DVCH1
GND2
DVCH2
HUS-DV
B11B-PH-K-S
TH-DV
SRA-21T-3
2
CN7
TMB
TMA
1
173981-2
BK
BK
1
2
3
4
5
6
7
8
CN5
+24V1
CRUCLK
+5VCRU
GND2
CRUSDA
PSPS\
(NC)
B8B-PH-K-S
BR
GY
BL
BR
+24V1
PCU PWB
DM-T
GND2
DM\
1
2
3
4
5
6
7
8
CN6
GND2
DSW-F
DSW-F
DMCLK\
9604S-08C
(NC)
1
3
Code
Signal
name
Name
Function/Operation
Type
Note
HUS-DV
HUS-DV
Developing humidity sensor
Developing section peripheral humidity
detection
detection
Humidity sensor
Analog detector
TH-DV
TH-DV
Developing temperature
thermistor
thermistor
Temperature detection around the
developing unit
developing unit
Thermistor
Analog
TCS
TCS
Toner density sensor
Toner density detection
Magnetic sensor
Analog detector
DM
DM
Drum motor
Drives the drum/developing section.
DC brushless motor
TM1
TM
Toner motor
Drives the toner hopper.
Synchronous motor
Bias
Bias
Developing bias
High voltage for developing bias
No.
Name
Operation
1
Developing roller
Forms magnetic brush with developer and put toner on the OPC drum.
2
DV doctor
Keeps the height of the magnetic brush on the developing roller at a fixed level.
3
Mixing roller (MX roller)
Mixes developer (carrier and toner) and charges toner negatively.
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