Sharp MX-6240N / MX-7040N (serv.man32) Service Manual ▷ View online
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 41
11. Waste toner section
Signal name
Name
Function/Operation
BTM
Transfer belt motor
Drives the transfer belt.
WTBSET
Waste toner bottle detector
Detects installation of the waste toner bottle.
WTFD
Waste toner full detector
Detects full of waste toner.
WTM
Waste toner motor
Transport waste toner.
B-1
B-2
B-3
B-4
B-5
B-6
B-2
B-3
B-4
B-5
B-6
24V4
P-GND
BTM_CK
P-GND
BTM_CK
CW/CCW
BTM_D
BTM_LD
CN-13
B24B-CZWHK-B-1
B24B-CZWHK-B-1
GND
5VN
WTM_D
WTM_CK
GND(WTM_CW)
WTM_LD
5VN
DSW_CS
GND
5VN
DSW_RL
GND
5VN
WTM_D
WTM_CK
GND(WTM_CW)
WTM_LD
5VN
DSW_CS
GND
5VN
DSW_RL
GND
17
16
16
18
19
20
21
22
23
29
26
28
27
27
25
24
24
B29B-CSRK
24V4
(NC)
CN-6
Reserve_OUT1
(NC)
1
24V
2
3
4
5
6
7
3
4
5
6
7
BTM_LD
B07B-PASK-1
P-GND
BTM_CK
BTM_D
CW/CCW
BTM_D
CW/CCW
BRAKE
PAP-07V-S
1
2
3
4
5
6
7
2
3
4
5
6
7
GND
5VN
WTM_D
WTM_CK
GND(WTM_CW)
WTM_LD
5VN
WTM_D
WTM_CK
GND(WTM_CW)
WTM_LD
24V4
13
12
11
10
12
11
10
9
8
7
8
7
13XR-6H-P
1-173977-3
7-292254-3
4
7
6
5
6
5
1
2
3
4
5VN
WTM_D
WTM_CK
WTM_D
WTM_CK
WTM_LD
GND
GND(WTM_CW)
24V4
1
2
3
2
3
5
6
7
6
7
179228-7
173977-7
6-292254-7
(NC)
ZHR-8
8
7
6
5
4
3
2
1
7
6
5
4
3
2
1
GND
5VN
WTM_D
WTM_CK
GND(WTM_CW)
WTM_LD
5VN
WTM_D
WTM_CK
GND(WTM_CW)
WTM_LD
B8B-ZR
(NC)
24V4
WTFD
6
5
4
3
2
1
5
4
3
2
1
WTFD
GND
03CK-6H-PC
03CK-6H-PC
29CSR-8PK
GND
5VN
GND
5VN
5VN+R
WTBSET
GND
WTBSET
5VNPD
2 2
1
3
1
3
2 2
1
3
1
3
BTM
WTM
WTBSET
WTFD
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 42
12. Fusing section
A. Electrical and mechanical relation diagram
FUFM
FUM
PRM
WEBM2
HL_UM
/US/UW
/US/UW
TS S
TS M
TH_UM
TS L
TH_US1
TH_US2
HLPCD
POD1
FPFD
TH_LM1
TH_LM2
HL_LM
WEBEND2
2
1
3
9
9
4
7
7
6
8
10
5
GND
/HL_PR
B7B-PASK-1
1
2
GND
3
4
5
6
7
HL PWB
WH
N-HL(US)
PAP-07V-S
N-HL(UM)
P
R
PNDP-40V-Z
HL_UM
HL_US
HL_LM
HL_UW
PCU PWB
HL_LM
HL_UM
/HL_PR
/HL_PR
CN-7
N-HL(UW)
1
2
3
2
3
1
2
3
2
3
B03B-VL-R
N-HL(UM)
N-HL(LM)
(NC)
(NC)
(NC)
VLP-03V-R
B40B-PNDZS
INT24V2L
INT24V2L
(3/3) CN-23
GND
TH_LM2
GND
TH_UM
GND
TH_UM_CS
TH_US
GND
TH_US_CS
TH_LM
GND
TH_LM_CS
P
R
1
3
5
7
9
3
5
7
9
11
13
15
17
19
21
23
25
13
15
17
19
21
23
25
5VNPD
FBMD_R
GND
TH_UM
FBMD_R
GND
TH_UM
GND
TH_UM_CS
TH_US
GND
TH_US_CS
TH_LM
GND
TH_LM_CS
GND
GND
TH_US2
TH_LM2
27
29
31
29
31
5VNPD
GND
FBMD_F
5VNPD
WEBEND1
WEBEND1
WEBEND2
GND
GND
5VNPD
5VNPD
5VNPD
GND
GND
POD1
GND
POD1
FPFD
FRS
2
4
6
8
4
6
8
10
12
14
16
18
20
22
24
26
12
14
16
18
20
22
24
26
(NC)
33
28
30
32
34
30
32
34
(NC)
PNDP-34V-Z
B34B-PNDZS
24V4
CN-9
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
5VNPD
GND
FPFD
GND
5VNPD
2
1
3
175489-3
179228-3
5VNPD
D-GND
WEBEND2
CZHR-10V-S
CZHR-10V-S
(NC)
(NC)
(NC)
(NC)
(NC)
FBMCM_XA
FBMCM_XB
FBMCM_A
FBMCM_B
+24V
WEBM2_B
WEBM2_A
5VNPD
GND
POD1
POD1
(NC)
(NC)
(NC)
39
37
35
33
31
29
27
37
35
33
31
29
27
2
2
2
4
1
3
2
4
1
3
CZHR-06V-S
CZHR-07V-S
CZHR-07V-S
WEBEND1
24V
4
FRS
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
A-10
A-10
A-9
A-8
A-8
A-3
A-4
A-5
A-6
A-7
A-1
A-2
A-8
A-7
A-6
A-5
A-4
A-3
A-2
A-1
B-9
B-8
B-7
B-6
B-5
B-4
B-3
B-2
B-1
B-6
B-9
B-8
B-7
B-8
B-7
B-5
B-1
B-2
B-3
B-4
A-6
A-5
A-4
A-3
A-2
A-1
A-6
A-3
A-4
A-5
A-1
A-2
B-6
B-5
B-5
B-1
B-2
B-3
B-4
B-6
B-5
B-4
B-3
B-2
B-1
A-7
A-7
19*-RWZV-K*GG-*6(LF)(SN)
13*-RWZV-K*GG-*4(LF)(SN)
CN-4
B03B-VL
B03B-VL
VLP-03V
CN-3
HL_US
HL_UW
N-HL(UW)
N-HL(US)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
N-HL(LM)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
CZHR-09V-S
CZHR-06V-S
CZHR-09V-S
VHR-3N
L-HL(LM)
L-HL(UW)
L-HL(LM)
L-HL(UW)
L-HL(UW)
RD
1
1
SLR-01VF
SLP-01V
L-HL(LM)
D1.25-M3(Ni)
WEBEND2
TH_US2
2
1
CN-5
B2P-VH-B
B2P-VH-B
6
3
5
6
3
5
1
4
1
4
(NC)
(NC)
(NC)
1
1
N-HL(LM)
YLP-01V
YLR-01VF
(NC)
A-9
D1.25-M3(Ni)
2
2
N-HL(US)
3
1
1
N-HL(UM)
BK
YLR-03VF
YLP-03V
N-HL(UW)
3
3
3
VLP-03V
VLR-03V
2
2
1
1
L-HL(US)
L-HL(UW)
L-HL(UM)
WH
2
2
1
1
D1.25-M3(Ni)
D1.25-M3(Ni)
3
3
4
4
YLP-04V
L-HL(UM/UW)
L-HL(US/LM)
L-HL(US/LM)
L-HL(UM/UW)
YLR-04VF
D1.25-M3(Ni)
D1.25-M3(Ni)
B40B-PNDZS
6
8
8
10
18
20
22
24
26
28
30
32
34
36
38
40
20
22
24
26
28
30
32
34
36
38
40
GND
HLPCD
5VNPD
HLPCD
5VNPD
FUFM_V
FUFM_LD
GND
INT24V2L
PNDP-40V-Z
CN-10
FUFM_CNT
FUM_CK
FUM_D
FUM_D
GND
FUM_LD
FUM_GAIN
P-GND
5VN
DRIVER PWB
1
16
3
5
7
9
11
13
15
14
12
10
8
6
4
2
PRM_A
PRM_XA
PRM_XA
PRM_XB
PRM_B
WEBM2_A
WEBM2_B
WEBM1_A
WEBM1_B
WEBM2_B
WEBM1_A
WEBM1_B
+24V
+24V
+24V
+24V
+24V
+24V
B16B-PASK-1
PAP-16V-S
FBMCM_A
FBMCM_XA
FBMCM_B
FBMCM_XB
FBMCM_XA
FBMCM_B
FBMCM_XB
(NC)
WEBM2_A
WEBM2_B
WEBM2_B
1
2
3
4
5
6
2
3
4
5
6
B6B-PH-K-S
PHR-6
+24V
+24V
+24V
PRM_/B
PRM_/A
PRM_/A
PRM_B
PRM_A
PRM_A
CN-4
(NC)
(NC)
(NC)
2
1
2
1
(NC)
(NC)
(NC)
(NC)
(NC)
SMR-02V-N
SMP-02V-NC
2
1
3
179228-3
175489-3
5VNPD
GND
FPFD
1
2
2
1
2
2
WEBM2_B
WEBM2_A
SMP-02V-BC
SMR-02V-N
2
POD1
175489-3
179228-3
3
GND
1
5VNPD
3
3
1
2
2
1
1
TH_LM
GND
TH_LM_CS
SMP-03V-BC
SMR-03V-N
1
2
2
1
2
2
SMR-02V-N
SMP-02V-NC
TH_US2
GND
1
2
2
1
2
2
SMR-02V-N
TH_LM2
GND
SMP-02V-NC
3
3
SMR-03V-N
2
1
1
2
1
1
TH_US
GND
TH_US_CS
SMP-03V-NC
3
3
SMR-03V-N
1
2
2
1
1
TH_UM
TH_UM_CS
GND
TH_UM_CS
GND
SMP-03V-BC
B7B-PASK-1
4
7
6
5
3
2
1
D-GND
5VN
5VN
PAP-07V-S
FUM_CW/CCW
FUM_GAIN
FUM_LD
FUM_CK
FUM_D
(NC)
B2B-VH
P-GND
INT24V2L
1
2
2
VHR-2N
1
2
2
1
1
3
4
3
4
GND
SMR-04V-N
FUFM_V
FUFM_LD
FUFM_CNT
SMP-04V-NC
2
HLPCD
179228-3
3
GND
5VNPD
1
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 43
B. Operational descriptions
(1)
Outline of operations
This machine employs the fusing system by the belt.
The features of the belt-type fusing system are as follows:
1)
Short warm-up time
2)
Low power consumption
3)
Wide nip providing high fusing capability
(2)
Heater lamp driving
The surface temperature of the heat roller and the fusing belt
detected by the fusing temperature sensor is sent to the PCU. If the
temperature is lower than the specified temperature, the heater
lamp lighting signal is sent from the PCU to the heater lamp drive
circuit in the HL PWB.
detected by the fusing temperature sensor is sent to the PCU. If the
temperature is lower than the specified temperature, the heater
lamp lighting signal is sent from the PCU to the heater lamp drive
circuit in the HL PWB.
When the power triac in the heater lamp drive circuit is turned ON,
the AC power is supplied to the heater lamp to light the lamp and
heat the fusing belt.
the AC power is supplied to the heater lamp to light the lamp and
heat the fusing belt.
A thermostat is provided as a safety device against an abnormally
high temperature in the heat roller and the fusing belt.
high temperature in the heat roller and the fusing belt.
When the thermostat is opened, the AC power supply to the heater
lamp is cut off.
lamp is cut off.
The heater lamp is arranged to fusing roller (F1) and fusing roller
(B).
(B).
In heater lamp (HL_UM/US/UW), three lamps are integrated into
one.
one.
Heater lamp operations
Signal name
Name
Function/Operation
FPFD
Fusing front paper pass detector
Detects paper pass in front of the fusing section.
FUFM
Fusing cooling fan
Cools the fusing section and the paper exit section.
FUM
Fusing motor
Drives the fusing section.
HL_LM
Heater lamp lower main
Heats the fusing roller (B).
HL_UM
Heater lamp upper main
Heats the fusing roller (F1) and the fusing belt.
HL_US
Heater lamp upper sub
Heats the fusing roller (F1) and the fusing belt.
HL_UW
Heater lamp assist
Heats the fusing roller (F1) and the fusing belt.
HLPCD
Fusing pressure detector
Detects the fusing pressure state.
POD1
Fusing paper exit detector
Detects paper pass in the fusing section.
PRM
Fusing pressure control motor
Controls ON/OFF of the fusing pressure.
TH_LM/TH_LM_CS
Fusing temperature sensor lower
Detects the surface temperature at the center of the fusing roller (B).
TH_LM2
Fusing temperature sensor lower (Sub)
Detects the suffered temperature at the edge section of the fusing roller (B).
TH_UM/TH_UM_CS
Fusing temperature sensor upper (Main)
Detects the surface temperature at the center of the fusing belt.
TH_US/TH_US_CS
Fusing temperature sensor upper (Sub)
Detects the suffered temperature at the edge section of the fusing belt.
TH_US2
Fusing temperature sensor upper (Sub 2)
Detects the suffered temperature at the edge section of the fusing belt.
TS_L
Thermostat lower (Main)
Shuts down the heater lamp circuit when the fusing section is overheated.
TS_M
Thermostat upper (Main)
Shuts down the heater lamp circuit when the fusing section is overheated.
TS_S
Thermostat upper (Sub)
Shuts down the heater lamp circuit when the fusing section is overheated.
WEBEND2
Web end detector
Detects web end of the fusing unit.
WEBM2
Fusing web motor
Drives the fusing web roller.
No.
Name
Function/Operation
1
Fusing roller (F1)
Heats the fusing belt.
2
Fusing roller (F2)
The cushion layer of the roller forms a wide nip between the fusing belt and fusing roller (B).
3
Fusing roller (B)
Heats the back surface of paper to fuse toner on the paper.
4
Transport roller
Includes silicon oil in it and improves fusing separation and cleaning capabilities.
5
HL control PWB
Drives the heater lamp.
6
Fusing web roller
Cleans the fusing roller (B).
7
Discharge brush
Discharges static electricity generated in the fusing section to the ground.
8
Separation plate
Separates paper.
9
Separation pawl
Separates fusing roller (B) when it is attached.
10
Fusing belt
Heats the front surface of paper to fuse toner on the paper.
Heater lamp
Operation
Heater lamp upper
main (HL_UM)
main (HL_UM)
Heats the center of the fusing roller (F1) and the
fusing belt.
fusing belt.
Heater lamp upper
sub (HL_US)
sub (HL_US)
Heats the edges of the fusing roller (F1) and the
fusing belt.
fusing belt.
Heater lamp assist
(HL_UW)
(HL_UW)
Heats fusing roller (F1) and the fusing belt.
Turns ON when warming up.
Turns ON when warming up.
Heater lamp lower
main (HL_LM)
main (HL_LM)
Heats fusing roller (B). Does not turn ON while
heater lamp upper main (HL_UM) and heater lamp
upper sub (HL_US) light up.
heater lamp upper main (HL_UM) and heater lamp
upper sub (HL_US) light up.
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 44
(3)
Fusing operation
Color toner (Y, M, C, and K) on paper is heated and pressed by the
fusing belt, fusing roller (F2), and fusing roller (B) to be fused on
paper.
fusing belt, fusing roller (F2), and fusing roller (B) to be fused on
paper.
Toner in the four layers on the paper is fused by heating from up
and down and both sides.
and down and both sides.
The fusing belt, fusing roller (F2) which is provided with the cushion
layer, and fusing roller (B) realize the following operations.
layer, and fusing roller (B) realize the following operations.
1)
The nip amount is increased and the heat capacity to paper is
increased.
increased.
2)
By pressing with the flexible roller, toner of many layers can be
fused without being deformed.
fused without being deformed.
3)
An even pressure is applied to rough surface of toner (due to
the multi-layer composition).
the multi-layer composition).
(4)
Automatic pressure release system
Normally the upper and lower heat rollers are pressed. When, how-
ever, the following conditions are satisfied, the pressure is
released.
ever, the following conditions are satisfied, the pressure is
released.
• When the machine shifts to the preheat mode.
• When the machine shifts to the auto power shut off mode.
• When the power switch of the operation panel is turned OFF.
• When the machine is left for 90 sec under the ready state.
• When in the envelope mode.
• When a jam occurs.
a. Pressure release operation
The fusing pressure control motor (PRM) rotates to turn ON the
fusing pressure detector (HLPCD) (H level). When the specified
time passes after turning ON the fusing pressure detector (HLPCD)
(H level) by rotation of the fusing pressure control roller (PRM), the
pressure release motor stops to complete the pressure release
operation.
fusing pressure detector (HLPCD) (H level). When the specified
time passes after turning ON the fusing pressure detector (HLPCD)
(H level) by rotation of the fusing pressure control roller (PRM), the
pressure release motor stops to complete the pressure release
operation.
b. Pressing operation
When the end user makes some operations or when the machine
receives the Job signal, the fusing pressure control motor (PRM)
rotates reversely to drive the pressure release lever to the pressing
state.
receives the Job signal, the fusing pressure control motor (PRM)
rotates reversely to drive the pressure release lever to the pressing
state.
When the specified time passes from turning OFF the fusing pres-
sure detector (HLPCD), the pressure release motor stops to com-
plete the pressing operation.
sure detector (HLPCD), the pressure release motor stops to com-
plete the pressing operation.
When turning OFF the main power switch of the machine, be sure
to turn OFF the power switch of the operation panel and check to
confirm that the LCD display goes off before turning OFF the main
power switch.
to turn OFF the power switch of the operation panel and check to
confirm that the LCD display goes off before turning OFF the main
power switch.
If the main power switch is turned OFF with the LCD lighted, the
power is cut off before completion of the pressure release opera-
tion. If this state is kept for a long time, the fusing roller may be
deformed.
power is cut off before completion of the pressure release opera-
tion. If this state is kept for a long time, the fusing roller may be
deformed.
Fusing roller
(B)
(B)
Fusing roller (F2)
Fusing belt
Fusing roller (B)
Fusing roller
(F2)
(F2)
Fusing belt
HLPCD
HLPCD
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