Sharp MX-M850 (serv.man19) Service Manual ▷ View online
MX-M1100 IMAGE PROCESS SECTION H – 5
E. Image process section actual wiring diagram
1 DVBS
2
B2P-VH
2
B2P-VH
DVBS
DSW-F-HV
B16B-PASK
DF1B-28DES-2.5RC
DF1B-28DEP-2.5RC
CN1
1
13 DSW-F-HV
13
GND2
2
14 GND2
14
GND2
3
15 GND2
15
XGBPWM
4
16 XGBPWM
16
XMHVREM
5
17 XMHVREM
17
MHV-T
6
18 MHV-T
18
XTHV+PWM
7
19 XTHV+PWM 19
XTHV+REM
8
20 XTHV+REM 20
XTHV-PWM
9
21 XTHV-PWM 21
XTHV-REM 10
22 XTHV-REM
22
XTHVACPWM 11
23 XTHVACPWM 23
XTHVACREM 12
24 XTHVACREM 24
XDVPWM
13
25 XDVPWM
25
XDVREM
14
26 XDVREM
26
HVREMout
15
27 HVREMout
27
+24V_A
16
28 +24V_A
28
1 GB
2
B2P-VH
2
B2P-VH
GB
9
B40B-PNDZS-1
CN-3
DSW-F-HV
11 GND2
13 GND2
15 XGBPWM
17 XMHVREM
19 MHV-T
21 XTHV+PWM
23 XTHV+REM
25 XTHV-PWM
27 XTHV-REM
15 XGBPWM
17 XMHVREM
19 MHV-T
21 XTHV+PWM
23 XTHV+REM
25 XTHV-PWM
27 XTHV-REM
29 XTHVACPWM
31 XTHVACREM
33 XDVPWM
31 XTHVACREM
33 XDVPWM
35 XDVREM
37 HVREMout
39 +24V_A
THV
MHV
PCU
PWB
PWB
High voltage
PWB unit
PWB unit
(Main)
2 DSW-F-HV2
4 GND2
4 GND2
6 GND2
DSW-F-HV2
B11B-PASK
CN1
1
GND2
2
16 XTHVCLPWM
GND2
3
18 XTHVCLREM
XTHVCLPWM
8
22 XBHVREM
XTHVCLREM
9
XBHVREM
11
1
B2P-VH
THVCL
2 THVCL
High voltage
PWB unit
(Sub)
PWB unit
(Sub)
MX-M1100 IMAGE PROCESS SECTION H – 6
2. Process control section
A. General
Information of the surface potential sensor, the image density sensor, the temperature / humidity sensor, and the consumable parts counter is
inputted to the PCU PWB.
According to this information, the PCU PWB outputs each control signal to control the voltage, the current, the toner density control level, and
the laser power to the proper levels, maintaining a high quality printed images.
inputted to the PCU PWB.
According to this information, the PCU PWB outputs each control signal to control the voltage, the current, the toner density control level, and
the laser power to the proper levels, maintaining a high quality printed images.
B. Block diagram
PCU PWB
DV UNIT
TRANSFER UNIT
SURFACE
POTENTIAL
SENSOR
IMAGE DENSITY
SENSOR
TEMPERATURE /
HUMIDITY SENSOR
TONER
HOPPER UNIT
TONER
MOTOR
TONER
MOTOR
LSU
W-ICU PWB
TONER
BOTTLE
OPC DRUM
PROCESS CONTROL
(TONER DENSITY CORRECTION)
PROCESS CONTROL
(TONER PATCH
DETECTION)
DRUM
COUNT
PROCESS
CONTROL
(ROTATIONCOUNT)
PROCESS CONTROL
(TEMPERATURE/
HUMIDITY DETECTION)
DV MOTOR
DRUM MOTOR
DV
COUNT
PROCESS
CONTROL
(ROTATIONCOUNT)
PROCESS CONTROL
(PAPER SIZE, PAPER TYPE
INFORMATION)
TONER
CONCENTRATION
SENSOR
PROCESS
CONTROL
CONTROL
(LASER POWER
CORRECTION)
MAIN HIGH
VOLTAGE PWB
PROCESS CONTROL
(MAIN CHARGER
VOLTAGE,
DEVELOPING BAIS
CORRECTION)
MAIN CHARGER
UNIT
PROCESS
CONTROL
CONTROL
(OPC DRUM
SURFACE
POTENTIAL
DETECTION)
PROCESS
CONTROL
CONTROL
(TONER SUPPLY
QUANTITY
CORRECTION)
MX-M1100 IMAGE PROCESS SECTION H – 7
C. Electrical and mechanism relation diagram
GND2
34
B38B-PNDZS-1
CN-7
BOTM
36
1
GND2
2
BTOM
4
TSGOUT
B30B-PNDZS-1
CN-8
6
+24V_A
8
TCS
10
GND2
TSGOUT
1
1 TSGOUT 1
1 TSGOUT 1
1 TSGOUT
1
+24V_A
2
2 +24V_A
2
2 +24V_A
2
2 +24V_A
2
TCS
3
3 TCS
3
3 TCS
3
3 TCS
3
GND2
4
51021-0400
4
SMP-04V-NC/SMR-04V-N
GND2
4
4
TSDP-12V-K
TSDR-12V-K
GND2
4
4
DF1B-14DEP-2.5RC /
DF1B-14DES-2.5RC
DF1B-14DES-2.5RC
GND2
4
CN_LEDout2
B14B-PNDZS-1
CN-2
1
TM1XB
2
TM2XB
3
TM1XA
4
TM2XA
5
TM1B
6
TM2B
7
TM1A
8
TM2A
9
+24V_A
10
+24V_A
11
+24V_A
12
+24V_A
13
1
TM1XB
CN_LEDin2 14
2
TM1XA
3
TM1B
4
TM1A
5
+24V_A
6
TM2XB
7
TM2XA
8
TM2B
9
TM2A
10
SMR-10V-N/SMP-10VNC
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
+24V_A
1 TM1XB
1
2 TM1XA
2
3 TM1B
3
4 TM1A
4
1 TM1XB
1
5 +24V_A
5
2 TM1XA
2
6
PAP-06V-S/PALR-06V
PAP-06V-S/PALR-06V
(NC)
6
3 TM1B
3
4 TM1A
4
5 +24V_A
5
1 TM2XB
1
6 TM2XB
6
2 TM2XA
2
7 TM2XA
7
3 TM2B
3
8 TM2B
8
4 TM2A
4
9 TM2A
9
5 +24V_A
5
10 +24V_A 10
6 (NC)
6
1 DVBS
2
B2P-VH
2
B2P-VH
DVBS
DSW-F-HV
B16B-PASK
DF1B-28DES-2.5RC
DF1B-28DEP-2.5RC
CN1
1
13 DSW-F-HV
13
GND2
2
14 GND2
14
GND2
3
15 GND2
15
XGBPWM
4
16 XGBPWM
16
XMHVREM
5
17 XMHVREM
17
MHV-T
6
18 MHV-T
18
XTHV+PWM
7
19 XTHV+PWM 19
XTHV+REM
8
20 XTHV+REM 20
XTHV-PWM
9
21 XTHV-PWM 21
XTHV-REM 10
22 XTHV-REM 22
XTHVACPWM 11
23 XTHVACPWM 23
XTHVACREM 12
24 XTHVACREM 24
XDVPWM
13
25 XDVPWM
25
XDVREM
14
26 XDVREM
26
HVREMout
15
27 HVREMout
27
+24V_A
16
28 +24V_A
28
1 GB
2
B2P-VH
2
B2P-VH
GB
9
B40B-PNDZS-1
CN-3
DSW-F-HV
11 GND2
13 GND2
15 XGBPWM
17 XMHVREM
19 MHV-T
21 XTHV+PWM
23 XTHV+REM
25 XTHV-PWM
27 XTHV-REM
15 XGBPWM
17 XMHVREM
19 MHV-T
21 XTHV+PWM
23 XTHV+REM
25 XTHV-PWM
27 XTHV-REM
29 XTHVACPWM
31 XTHVACREM
33 XDVPWM
31 XTHVACREM
33 XDVPWM
35 XDVREM
37 HVREMout
39 +24V_A
THV
MHV
PCU
PWB
High voltage
PWB unit
PWB unit
(Main)
5 +12V_B
5
6 PCS
6
7 XPCS-LED 7
1 +12V_B
1
1 +12V_B
1
1 +12V_B
1
+12V_B
36B-PNDZS-1
CN-9
6
5 +12V_B
5
2 PCS
2
2 PCS
2
2 PCS
2
PCS
7
6 PCS
6
3 XPCS-LED 3
3 XPCS-LED 3
3 XPCS-LED
3
XPCS-LED
8
7 XPCS-LED
7
+24V_A
11
DESS
12
11 +24V_A
11
GND2
13
12 DESS
12
GND2
14
13 GND2
13
1 +24V_A
14 GND2
14
2 DESS
3 GND2
3 GND2
+5V_C
17
4 GND2
HUS-CL
18
GND2
19
TH-CL
20
19 +5V_C
19
20 HUS-CL
20
21 GND2
21
22 TH-CL
22
1 +5V_C
2 HUS-CL
3 GND2
4 TH-CL
2 HUS-CL
3 GND2
4 TH-CL
PCU
PWB
2 DSW-F-HV2
4 GND2
4 GND2
6 GND2
DSW-F-HV2
B11B-PASK
CN1
1
GND2
2
16 XTHVCLPWM
GND2
3
18 XTHVCLREM
XTHVCLPWM
8
22 XBHVREM
XTHVCLREM
9
XBHVREM
11
1
B2P-VH
THVCL
2 THVCL
High voltage
PWB unit
(Sub)
PWB unit
(Sub)
TCS
TCS
TCS
TCS
DESS
DESS
DESS
DESS
HUS-CL/TH-CL
HUS-CL/TH-CL
HUS-CL/TH-CL
HUS-CL/TH-CL
PCS
PCS
PCS
PCS
BOTM
BOTM
BTOD
BTOD
TM2
TM2
TM1
TM1
1
9
9
10
8
5
2
6
7
2
3
4
5
8
7
6
3
4
Code
Name
Function / Operation
DESS
Surface potential sensor
Detects the OPC drum surface potential after exposure and after non-exposure.
TCS
Toner density sensor
Detects the toner density in the developing tank. The transmission type magnetic sensor is employed.
HUS-CL / TH -CL
Temperature /
humidity sensor
humidity sensor
Detects the temperature and the humidity in the image process section. The detection result is reflected on
process control.
process control.
PCS
Image density sensor
Detects the toner patch density on the OPC drum during process control.
MX-M1100 IMAGE PROCESS SECTION H – 8
D. Process control items
Process control correction operation.
E. Process control Disable / Enable setting
The operations of process control can be disabled or enabled with Sim. 44-1.
No
Name
Function / Operation
1
Main high voltage PWB
Outputs the developing bias voltage, the main charger voltage, the transfer voltage, and the transfer cleaning
voltage based on the control signal from the PCU PWB.
voltage based on the control signal from the PCU PWB.
2
Main charger unit
Charges the OPC drum surface negatively and uniformly by negative discharge.
3
OPC drum
Forms electrostatic latent images with laser beams, and forms toner images on the electrostatic latent image
section.
section.
4
Developer roller
Composes a magnetic brush with developer, and forms toner images on the OPC drum.
5
Toner bottle
Supplies toner to the toner hopper unit by rotating the toner bottle itself.
6
Transfer belt
Transfers toner images on the OPC drum to paper.
7
Transfer roller
Applies a voltage for transfer of toner on the OPC drum to paper.
8
Toner hopper section
Supplies toner to the developing section.
9
PCU PWB
Controls the whole process section based on the information of the sensors and the counters.
10
LSU
Controls the laser power.
No.
Item
Purpose
Variable element
Control item
1
Image density sensor
sensitivity adjustment
sensitivity adjustment
The sensor sensitivity is effected by a dirty sensor or
temperature changes.
temperature changes.
Sensor dirt, temperature
change
change
Image density sensor LED
current
current
2
OPC drum dark potential
correction
correction
The dark potential is maintained to the proper level,
Deterioration, temperature, humidity, and generations of
ovelapping quality effect the dark potential level.
Deterioration, temperature, humidity, and generations of
ovelapping quality effect the dark potential level.
Usage of the OPC drum,
temperature/humidity change
temperature/humidity change
MC grid voltage
3
OPC drum photo sensitivity
correction/ OPC drum
charging correction
correction/ OPC drum
charging correction
The charging potential and the photo sensitivity are
always maintained to the proper levels for deterioration of
the OPC drum and changes in the temperature and
humidity as well as to prevent against multi generation of
overlap copying.
always maintained to the proper levels for deterioration of
the OPC drum and changes in the temperature and
humidity as well as to prevent against multi generation of
overlap copying.
Usage of the OPC drum,
temperature/humidity change
temperature/humidity change
Laser power/
MC grid voltage
MC grid voltage
4
High density image
correction (High density
process control)
correction (High density
process control)
The high image density is maintained to the proper level
and corrects for deterioration of consumable parts,
changes in temperature and humidity.
and corrects for deterioration of consumable parts,
changes in temperature and humidity.
Usage of the OPC drum and
developer, humidity/
temperature change, other
changes in the process section
environment conditions
developer, humidity/
temperature change, other
changes in the process section
environment conditions
DV bias voltage
5
Half-tone density correction
(Half-tone process control)
(Half-tone process control)
The print density of medium density section images is
always maintained to the proper level for deterioration of
consumable parts in the process section and changes in
the temperature and the humidity.
always maintained to the proper level for deterioration of
consumable parts in the process section and changes in
the temperature and the humidity.
Usage of the OPC drum and
developer, humidity/
temperature change, other
changes in the process section
environment conditions
developer, humidity/
temperature change, other
changes in the process section
environment conditions
Laser power
6
Toner density correction
The toner density is always maintained to the normal
level, enabling printing at the normal density.
level, enabling printing at the normal density.
Usage of developer,
temperature / humidity change
temperature / humidity change
Toner density control level
(Toner density sensor gain)
(Toner density sensor gain)
Change in the developing bias
voltage after the high density
image correction.
Image area. (Pixel count)
voltage after the high density
image correction.
Image area. (Pixel count)
7
Transfer current correction
The transfer performance is always maintained to the
proper level for various changes in conditions.
proper level for various changes in conditions.
Temperature and humidity,
paper type, paper width, usage
of the transfer belt.
paper type, paper width, usage
of the transfer belt.
Transfer current
Display
Content
Setting range
Default
DARK POTENTIAL
OPC drum dark potential correction
Disable: 1: NO
Enable: 0: YES
Enable
ID
High density image correction (High density process control)
Enable
ID SP
High density image correction (High density process control)
Enable
VH
Medium density image correction (Half-tone process control)
Enable
ENV
Process environment correction Enable / Disable setting
Enable
LIFE
Process life (consumable parts usage) correction Enable / Disable setting
Enable
LIMI
Process correction limit process Enable / Disable setting
Enable
MULTI
Dark potential correction Enable / Disable setting during printing
Enable
TN HUM
Toner density (for humidity) correction
Enable
TN LIFE
Toner density life (for developer usage) correction
Enable
TN LOW
Toner suppression control (NOT USED)
Enable
TN DOT
Toner density correction (The toner supply amount is controlled according to the
dot count number in printing of a certain quantity from starting printing.)
dot count number in printing of a certain quantity from starting printing.)
Enable
TN PCFB
Toner density correction (Correction is made for the high density image
correction result (DV bias change amount).)
correction result (DV bias change amount).)
Enable
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