DOWNLOAD Sharp MX-M623U / MX-M753U (serv.man10) Service Manual ↓ Size: 49.81 MB | Pages: 127 in PDF or view online for FREE

Model
MX-M623U MX-M753U (serv.man10)
Pages
127
Size
49.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / COMPLETE SERVICE MANUAL
File
mx-m623u-mx-m753u-sm10.pdf
Date
PREV: Sharp MX-M623U / MX-M753U (serv.man9) Service Manual

Sharp MX-M623U / MX-M753U (serv.man10) Service Manual ▷ View online

MX-M753N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 16
M. Filter
No.
Name
Function/Operation
1
Ozone filter
Absorbs ozone generated in the image process section.
2
Toner filter
Filters dispersed toner in the process section.
1
2
MX-M753N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 17
N. PWB
No
Name
Function/Operation
1
AC power PWB
Controls the AC power.
2
CCD PWB
Scans document images to converts analog signal to digital signal.
3
CL inverter PWB
Drives the xenon lamp.
4
DC main power PWB
Generates the DC power.
5
DC sub power PWB
Energy-saving mode / Generates the DC power for the controller.
6
LVDS PWB
Generates the LCD display signal.
7
LCD INV PWB
Generates a high voltage for backlight.
8
MFP FLASH ROM PWB
Stores the MFP control program.
9
MFP controller PWB
Controls the image-related items and controls all over the machine.
10
Mother PWB
Interfaces the MFP control PWB and the PCU PWB.
11
PCU FLASH ROM PWB
Stores the PCU control program.
12
PCU PWB
Controls the engine section.
13
Power SW PWB
Outputs the ON/OFF control signal of the DC power source.
14
USB connector PWB
For USB connecting.
15
Image density sensor PWB
Detects the toner patch density in the image density correction.
16
HL PWB
Controls the heater lamp.
17
Document size detection light reception PWB
Generates the document size detection signal.
18
Document size detection light emitting PWB
Generates lights to detect the document size.
19
High voltage power PWB (MC/DV/TC)
Generates the main charger voltage, the developing bias voltage, the transfer voltage and the transfer 
belt cleaning voltage.
20
Transfer bias high voltage PWB (TD CL)
Provides the bias voltage for the transfer cleaning roller and the print mode.
21
Dehumidifier heater relay PWB
Controls ON/OFF of the dehumidifier heater.
22
Discharge lamp PWB
Generates light for discharging.
23
Scanner Flash PWB
Stores the scanner control program.
24
Scanner control PWB
Controls the scanner section.
25
Operation control PWB
Controls the display operation panel.
26
Manual feed paper width detection PWB
Detects the manual paper feed tray paper width.
27
Driver PWB
Drives the motors.
28
Paper size detection PWB 
(Paper feed tray 3, 4)
Detects the paper size.
29
Detector PWB (Paper feed tray 1, 2)
Detects the paper empty and upper limit tray.
30
Photo-conductor temperature sensor PWB
Temperature detection around the photo-conductor
5
1
21
4
9
17
2
8
26
19
28
16
27
12
29
3
10
11
20
30
15
18
23
24
22
7
6
25
13
14
MX-M753N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 18
O. Fuse/thermostat
No.
Code
Name
Type
Specifications
Function/Operation
Section
NOTE
1
F201
Fuse
Time lag
250V 6.3A
PCU PWB protection (24V1)
DC main 
power PWB
100V series/
200V series
2
F202
Fuse
Time lag
250V 6.3A
Driver PWB protection (24V2)
DC main 
power PWB
100V series/
200V series
3
F203
Fuse
Time lag
250V 6.3A
Scanner control PWB protection (24V3)
DC main 
power PWB
100V series/
200V series
4
F204
Fuse
Time lag
250V 6.3A
LCC control PWB protection (24V4)
DC main 
power PWB
100V series/
200V series
5
F205
Fuse
Time lag
250V 6.3A
Finisher protection (24V5)
DC main 
power PWB
100V series/
200V series
6
F206
Fuse
Time lag
250V 6.3A
Inserter protection (24V6)
DC main 
power PWB
100V series/
200V series
7
F208
Fuse
Time lag
250V 6.3A
Motor protection (38V)
DC main 
power PWB
100V series/
200V series
8
F1
Fuse
Time lag
250V 15A
DC power source over-current protection 
(Main source)
DC main 
power PWB
100V series
9
F1
Fuse
Time lag
250V 8A
DC power source over-current protection 
(Main source)
DC main 
power PWB
200V series
10
F101
Fuse
Time lag
250V 5A (100V series)
250V 3.15A (200V series)
DC power source over-current protection 
(Main source)
DC sub power 
PWB
100V series/
200V series
11
F201
Fuse
Time lag
250V 2A
DC power source over-current protection 
(Main source)
DC sub power 
PWB
100V series/
200V series
12
F103
Fuse
Time lag
250V 2A
DC power source over-current protection 
(Main source)
DC sub power 
PWB
100V series/
200V series
13
F1
Fuse
Immediate 
decision type
250V 200mA
LCD inverter circuit over-current protection 
LVDS/INV
LCD INV PWB
Common
14
F1
Fuse
Time lag
250V 20A
AC power source over-current protection 
(Main source)
AC power 
PWB
100V system
15
F2
Fuse
Time lag
250V 10A
AC power source over-current protection 
(Main source)
AC power 
PWB
200V system
16
F3
Fuse
Time lag
250V 2.0A
Dry heater over-current protection
AC power 
PWB
100V system
17
F4
Fuse
Time lag
250V 2.0A
Dry heater over-current protection
AC power 
PWB
200V system
18
HLTS_M
Thermostat
125VAC 15A
240VAC 10A
Fusing roller overheat protection
Fusing unit
19
HLTS_S
Thermostat
125VAC 15A
240VAC 10A
Fusing roller overheat protection
Fusing unit
14,15
16,17
4
8,9
11
13
12
10
18
19
3
2
1
6
5
7
MX-M753N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 19
P. Roller
No.
Name
Function/Operation
1
Paper feed roller 
(Manual paper feed tray)
Feeds paper to the paper transport section.
2
Separation roller 
(Manual paper feed tray)
Separates paper to prevent double-feed.
3
Paper pickup roller 
(Manual paper feed tray)
Sends paper to the paper transport section.
4
Paper feed roller 
(No. 1 paper feed tray)
Feeds paper to the paper transport section.
5
Paper pickup roller 
(No. 1 paper feed roller)
Sends paper to the paper transport section.
6
Separation roller 
(No. 1 paper feed tray)
Separates paper to prevent double-feed.
7
Paper feed roller 
(No. 2 paper feed tray)
Feeds paper to the paper transport section.
8
Separation roller 
(No. 2 paper feed tray)
Separates paper to prevent double-feed.
9
Paper pickup roller 
(No. 2 paper feed roller)
Sends paper to the paper transport section.
10
Paper feed roller 
(No. 3 paper feed tray)
Feeds paper to the paper transport section.
11
Separation roller 
(No. 3 paper feed tray)
Separates paper to prevent double-feed.
12
Paper pickup roller 
(No. 3 paper feed roller)
Sends paper to the paper transport section.
64
63
55
56
9
3
2
1
18
19
7
8
12
10
11
15
13
14
5
4
6
62
61
25
24
23
22
21
20
52
53
42
35
33
54
43
16
17
58
57
59
50
51
48
60
45
49
47
44
46
39
40
37
36
31
32
34
30
28
26
27
29
38
41
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