MX-5500N, MX-6200N, MX-7000N (serv.man66). Fusing Section-Detailed section — Sharp Copying Equipment Service Manual (repair manual)

Model
MX-5500N MX-6200N MX-7000N (serv.man66)
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25
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8.05 MB
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PDF
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Service Manual
Brand
Device
Copying Equipment / Fusing Section-Detailed section
File
mx-5500n-mx-6200n-mx-7000n-sm66.pdf
Date

View Sharp MX-5500N / MX-6200N / MX-7000N (serv.man66) Service Manual online

MX-7000N  FUSING SECTION  O – 1
MX-7000N
Service Manual
 
[O] FUSING SECTION
1. Electrical and mechanism relation diagram
WEBM
POD1
HL_EX
HL_US
HL_LM
HL_UM
FUM
FEXM
FCFM
TH_US
WEB_END
6
TH_UM
TS_LM
TS_UM
TS_US
TH_EX1
TH_EX2
TS_EX
TS_EX
TH_LM
7
1
2
3
4
4
4
5
3
CN1
H
L
P
W
B
CN4
B3P5-VH
INT24V1
D-GND
CN2
H
Lout_UM
HLout_US
HLout_LM
S02B-VT
HLout_EX
/HLPR
B07B-PASK
FPS-250
R
SM-2pin_N
P
P
D
F1B-20P
S
CN8
D
R
IV
E
R
P
W
B
B12B-PNDZS-1
PHNR-5-H
+BU05P-TR-P-H
CN12
CN10
/HLPR
HLout_EX
HLout_LM
HLout_US
HLout_UM
D-GND
INT24V1
PHNR-3-H
+BU03P-TR-P-H
B40B-PNDZS-1
PHNR-2-H
+BU02P-TR-P-H
PHNR-4-H
+BU04P-TR-P-H
PHNR-2-H
+BU02P-TR-P-H
B16B-PNDZS-1
CN13
B40B-PNDZS-1
GP1A71L3
PHR-3
DF11-8DP-SP1
TH_UM
D-GND
B-4
5VNPD
B-6
D-GND
5
2
TH_LM
4
5VNPD
3
2T
H
_L
M
1
1D
-G
N
D
2
1
A-1
TH_LM
D-GND
TH_EX2
POD1
2
B-9
D-GND
B-1
B-5
POD1
B-5
D-GND
1
TH_US
B-3
19
13
11 9
7
WEB_END
D-GND
9
7
1
3
5
TH2_AD1
13
TH2_AD2
15
TH1_AD1
4
2
TH1_AD2
6
18
WEBM_b
D-GND
N-HL_US
L-HL_LM
L-HL_U
N-HL_LM
3
5
2
1
10
10
14
TH_US
TH_EX2
TH_EX1
A-9
A-10
12
D-GND
D-GND
19
TH2_AD2
4
10
20
2
6
L-HL_U
1
1
N
-HL_UM
1
22
N-HL_UM
1
A-1
3
B-2
A-4
A-3
D-GND
A-7
TH_EX1
4
A-2
A-9
A-10
A-5
A-6
3
B-8
WEB_END
A-8
B-7
B-1
3
5
4
1
2
3
TH1_AD2
1
2
TH1_AD1
2
D-GND
1D
-G
N
D
1
2T
H
_U
S
D-GND
D-GND
D-GND
A-4
D-GND
7
TH_EX2
TH_UM
TH_EX1
TH1_AD1
20
TH1_AD2
TH2_AD1
6
D-GND
4
TH_LM
16
WEBM_a
WEBM_b
18
2
B-9
WEB_END
9
7
10
TH_US
A-3
TH1_AD2
TH1_AD1
7
12
17
6
N-HL_EX
5
6
2
6
4
5
3
L-HL_LM
N-HL_LM
4
5
A-5
B-3
DGND
6
8
7
5
4
3
2
1
DGND
DGND
DGND
DGND
DGND
DGND
DGND
A-7
A-2
8
A-6
B-7
B-8
1
2
WEBM_a
17
2
1
WEBM_a
A-8
36
4
WEBM_b
38
POD1
15
5VNPD
15
13
13
TH_UM
TH_LM
8
16
8
14
14
16
WEB_END
9
B-2
N-HL_EX
3
N-HL_US
1
1
2
TH_EX2
3
2
4
1
POD1 5VNPD
D-GND
TH_EX1
D-GND
2
12
12
FUFM_F_LD
3
1
FUFM_F
5P
-G
N
D
10
PO
FM
_C
N
T2
P
C
U
P
W
B
P
S
M-6pin_N
R
P
D
F18-32P
S
CN14
B30B-PNDZS-1
B7B-PH-K-S
21
FEXM_A
21
23
INT24V2
23
11
1
5
7
9
FUM_LD
FEXM_/B
FEXM_B
FEXM_/A
FEXM_A
INT24V2
INT24V2
P-GND
/FUM_CK
/FUM_D
15
FEXM_/B
17
FEXM_B
19
5
INT24V2
1
P-GND
2
15
19
FEXM_/A
2
4
FEXM_A
N.C
7
N.C
3
/FUM_CK
4
/FUM_D
6
2
FEXM_/A
FUM_LD
FEXM_/B
1
3
FEXM_B
3
6N
,C
6
5
INT24V2
5
4
11
3
15
17
19
3
17
P
D
F1B-32P
R
11
11
P-GND
FUFM_F
7
9
FUFM_F_LD
9
13
/POFM_CNT2
13
7
P
D
F1B-32P
R
3
3
P
-GND
FUFM_F
1
2
FUFM_F_LD
2
4
/POFM_CNT2
4
1
P
D
F1B-32P
R
3
3
P
-GND
FUFM_F
1
2
FUFM_F_LD
2
4
/POFM_CNT2
4
1
WEB_INL
33
WEB_INL
B-6
B-4
WEB_INL
11
WEB_INL
11
WEB_INL
11
MX-7000N  FUSING SECTION  O – 2
2. Operational descriptions
A. Fusing unit drive
To drive the fusing unit, the drive power is transmitted from the
drive motor (FUM) through the connection gear to the upper heat
roller gear.
The drive motor (stepping motor) is driven according to the control
signal sent from the PCU.
B. Heater lamp drive
The surface temperature of the heat roller detected by the ther-
mistor is sent to the PCU. When the temperature is lower than the
specified level, the heater lamp lighting signal is sent from the PCU
to the heater lamp drive circuit in the sub power PWB.
The power triac in the heater lamp drive circuit is turned on, and the
AC power is supplied to the heater lamp, lighting the lamp and
heating the heat roller.
To prepare for an abnormally high temperature of the heat roller,
the thermostat is provided for safety.
When the thermostat is opened, power supply (AC line) to the
heater lamp is cut off.
C. Fusing operation
Color toner of YMCK on paper is heated and pressed by the heat
rollers to be fused on paper.
At that time, color toner of YMCK is mixed to reproduce nearly
actual colors of document images.
The heater lamp is provided in the upper and lower heat rollers and
the external heat roller. It heats paper up and down.
This is because necessary to heat from left/right/above/below for
fusing four layers of toner on paper.
The upper and lower heat rollers are of silicon rubber.
This is because of the following reasons:
1)
To provide a greater nip quantity and a higher heating capacity
for paper.
2)
The soft, flexible rollers press multi-layer toner without defor-
mation to fuse on paper.
3)
An even pressure is applied to an uneven surface of multilayer
toner.
The external heat roller roller has the following functions.
1)
Helps fusing and keeps the fusing temperature under special
conditions.
Signal
Name
Function/Operation
FCFM
Fusing cooling fan
Cools the fusing unit
FEXM
External variable motor
Separates the external heat roller of the fusing unit
FUM
Fusing motor
Drives the fusing unit
HL_EX
Heater lamp external
Heats the external heat roller
HL_LM
Lower heater lamp
Heats the lower heat roller
HL_UM
Heater lamp upper main
Heats the upper heat roller
HL_US
Heater lamp upper sub
Heats the upper heat roller
POD1
Fusing rear detection
Detects the paper from the fusing unit
TH_EX1
External thermistor main
Controls surface temperature of the external heat roller
TH_EX2
External thermistor sub
Controls surface temperature of the external heat roller
TH_LM
Lower  thermistor
Controls surface temperature of the lower heat roller
TH_UM
Upper  thermistor main
Controls surface temperature of the upper heat roller
TH_US
Upper  thermistor sub
Controls surface temperature of the upper heat roller
TS_EX
External thermostat
Prevents the external heat roller overheating
TS_LM
Lower thermostat
Prevents the lower heat roller overheating
TS_UM
Upper thermostat main
Prevents the upper heat roller overheating
TS_US
Upper thermostat sub
Prevents the upper heat roller overheating
WEB_END
Web end sensor
Detects end of the web
WEB_INL
Web installation detection
Detects installation of the web unit
WEBM
Fusing web cleaning motor
Drives the fusing web cleaning paper
No.
Name
Function/Operation
1
Upper heat roller
Heat and presses toner on paper to fuse it on paper
2
Lower heat roller
Heat and presses toner on paper to fuse it on paper
3
Upper separation pawl
Mechanically separates the paper which was not separated naturally from the upper heat roller.
4
Lower separation pawl
Mechanically separates the paper which was not separated naturally from the lower heat roller.
5
External heat roller
Supports temperature control of the upper heat roller.
6
Web unit
Clean the upper heat roller
7
Transport roller 9 (Drive)
Transports paper from the upper/lower heat rollers to the paper exit roller 1
FUM
PCU
MX-7000N  FUSING SECTION  O – 3
D. Fusing temperature control
The temperature sensors are provided at the center and the edges
of the upper heat roller, at the center of the lower heat roller, and at
the center and the edges of the external heat roller.
The heat roller temperature is detected by the temperature sensors
to control the heater lamp so that the temperature is maintained at
the specified level.
The fusing temperature is switched according to the paper type
selected.
* For the fusing temperature set value, refer to SIM43-1 in [7] SIM-
ULATIONS.
3. Disassembly and assembly
A. Fusing unit
Unit
Page
A
Fusing unit
O - 3
B
Others
O -20
Unit
Parts
Mainte
nance
Page
1
Fusing unit
a
External thermostat main
O - 4
b
External thermostat sub
c
External thermistor main
 ▲
O - 5
d
External thermistor sub
 ▲
e
Upper thermostat main
O - 6
f
Upper thermostat sub
g
Upper thermistor sub
 ▲
O - 7
h
Upper thermistor main
O - 8
i
Lower thermostat
O - 8
j
Lower thermistor
 ▲
k
Fusing rear detection
O - 9
l
Heater lamp external
O -10
m
External heat SP
 ▲
n
Slider ring
 ▲
o
External heat bearing
 ▲
p
External heat collar
 ▲
q
External heat belt
 ▲
r
External heat roller
 ▲
s
Heater lamp upper sub
O -12
t
Heater lamp upper main
u
Fusing gear
 ▲
v
Upper roller bearing
 ▲
w
Upper heat roller
 ▲
x
Lower heater lamp
O -14
y
Lower roller bearing
 ▲
z
Lower heat roller
 ▲
A
Discharge brush
O -16
B
Transport roller 9 (Drive)
 {
O -16
C
Upper separation pawl
 ▲
O -17
D
Upper separation pawl SP
 ▲
E
Lower separation pawl
 ▲
O -18
F
Lower separation pawl SP
 ▲
G
Web unit
 ▲
O -19
1-G
1-r
1-q
1
1-v
1-v
1-C
1-C
1-C
1-g
1-w
1-k
1-a
1-b
1-l
1-f
1-e
1-s
1-t
1-x
1-p
1-B
1-m
1-y
1-c
1-d
1-z
1-i
1-p
1-o
1-y
1-E
1-F
1-F
1-E
1-D
1-D
1-h
1-j
1-n
1-o
1-m
1-n
1-u
1-A
MX-7000N  FUSING SECTION  O – 4
(1) Fusing unit
* CAUTION. HOT
When removing the fusing unit, because the fusing unit is high
temperature, remove after it cools enough.
1)
Release the lock (A), and open the right door unit (B).
* When working, open the right door unit enough.
2)
Remove the screws (C), and pull out the fusing unit (D).
3)
Hold the part of green felts (E), and remove the fusing unit (F). 
a. External thermostat main, External thermostat sub
1)
Remove the fusing unit.  (Refer to the "(1) Fusing unit".)
Unit
1
Fusing unit
1
A
B
C
C
D
Unit
Parts
1
Fusing unit
a
External thermostat main
b
External thermostat sub
F
1
E
E
1-a
1-b
MX-7000N  FUSING SECTION  O – 5
2)
Remove the screws (A). Rotate the fusing web unit (B), and
remove it.
* When installing, engage the fusing web unit (B) to the pawls
(C) of the upper cover.
* When installing, be careful to prevent bending the elec-
trodes (D), and check that the electrodes are contacted.
3)
Remove the screws (E), and remove the upper cover (F).
4)
Disconnect the connectors (H) by releasing each locks (G).
Remove the screws (I), and remove the external thermostat
main  (J), the external thermostat sub (K), and the washers (L).
b. External thermistor main, External thermistor sub
1)
Remove the fusing unit.  (Refer to the "(1) Fusing unit".)
2)
Remove the screws (A). Rotate the fusing web unit (B), and
remove it.
* When installing, engage the fusing web unit (B) to the pawls
(C) of the upper cover.
* When installing, be careful to prevent bending the elec-
trodes (D), and check that the electrodes are contacted.
3)
Remove the screws (E), and remove the upper cover (F).
A
A
B
B
C
D
E
F
E
E
J
K
1-a
1-b
H
L
L
H
I
G
G
Unit
Parts
Mainte
nance
1
Fusing unit
c
External thermistor main
 ▲
d
External thermistor sub
 ▲
1-d
1-c
A
A
B
B
C
D
E
F
E
E

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Here you can view online or download Sharp MX-5500N / MX-6200N / MX-7000N (serv.man66) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp MX-5500N / MX-6200N / MX-7000N (serv.man66) Copying Equipment. Information contained in Sharp MX-5500N / MX-6200N / MX-7000N (serv.man66) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).