Sharp MX-M850 (serv.man35) Service Manual ▷ View online
MX-M1100 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 13
J. Lamp
Signal name
Name
Type
Function / Operation
Note
CLI
Scanner lamp
Xenon lamp
Radiates lights onto a document for the CCD to
scan the document image.
scan the document image.
DL1
Discharge lamp
Fuse lamp
Discharging the OPC drum.
DSPF COPY LUMP
DSPF copy lamp
Xenon lamp
Radiates lights onto a document for the CCD to
scan the document image.
scan the document image.
HL1, HL2, HL4
Upper heater lamp
Halogen lamp
Heats the upper heat roller.
"HL4" is only for Europe
95/110-sheet machine.
95/110-sheet machine.
PTDL1
Transfer section front discharge lamp
LED
Discharges the OPC drum surface of the transfer
section front.
section front.
DSPF COPY LUMP
CLI
DL1
HL1, HL2, HL4
PTDL1
MX-M1100 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 14
K. Fan / Filter
Signal name
Name
Type
Function / Operation
CCDFM
CCD cooling fan
Fan motor
Cools the CCD and the CL inverter.
CFM-ADU1a
Reverse transport cooling fan
Sirocco fan
Cools paper in the reverse section.
CFM-ADU1b
Reverse cooling fan
Sirocco fan
Cools the reverse section.
CFM-ADU2a
ADU section paper cooling fan 1
Axial-flow fan (60)
Cools paper in the ADU section.
CFM-ADU2b
ADU section paper cooling fan 2
Axial-flow fan (60)
Cools paper in the ADU section.
CFM-CL1
Process cooling fan 1
Axial-flow fan (60)
Cools the process section.
CFM-CL2
Process cooling fan 2
Axial-flow fan (60)
Cools the process section.
CFM-CL3
Process cooling fan 3
Axial-flow fan (60)
Cools the process section.
CFM-CL4
Process cooling fan 4
Axial-flow fan (60)
Cools the process section.
CFM-DC1
Power cooling fan 1
Axial-flow fan (60)
Cools the power section.
CFM-DC2
Power cooling fan 2
Axial-flow fan (60)
Cools the power section.
CFM-DC3
Power cooling fan 3
Axial-flow fan (60)
Cools the power section.
CFM-DV1
Developing cooling fan 1
Axial-flow fan (60)
Cools the developing section.
CFM-PA1
Paper cooling fan
Axial-flow fan (60)
Cools paper in the paper exit section.
CFM-PO1
Polygon cooling fan
Axial-flow fan (60)
Cools the polygon section.
CFM-PS
PS cooling fan
Axial-flow fan (40)
Cools the PS section.
CFM-Tr
Process cooling fan
Axial-flow fan (40)
Cools the process section.
CLFM
Copy lamp cooling fan
Fan motor
Cools the copy lamp.
FM-CTL1
CTL cooling fan
Axial-flow fan (60)
Cools the controller section.
FM-DV1
Toner suction fan
Sirocco fan
Sucks toner.
FM-HDD
HDD cooling fan
Axial-flow fan (60)
Cools the HDD.
SPFFAN1
DSPF motor cooling fan 1
Fan motor
Cools the DSPF motor.
VFM-EX
Machine exhaust fan 1
Axial-flow fan (120)
Discharges heat from the fusing section.
VFM-EX1
Ozone exhaust fan 1
Sirocco fan
Discharges ozone.
VFM-EX2
Ozone exhaust fan 2
Sirocco fan
Discharges ozone.
No.
Name
Function / Operation
1
Dust cover
Collects dust in sucked air.
2
Exhaust filter
Sucks dust in exhaust air.
3
Ozone filter
Decomposes ozone generated in the process section.
4
Suction filter
Removes dusts in suction air.
5
Toner filter
Prevents toner dispersion.
6
DVBOX filter
Prevents toner dispersion.
CFM-DV1
CFM-PS
5
4
FM-DV1
CFM-ADU2a
CFM-CL1
CCDFM
CFM-Tr
6
CFM-CL4
CFM-CL2
CFM-CL3
CFM-ADU2b
SPFFAN1
2
CLFM
FM-CTL1
FM-HDD
CFM-DC3
CFM-DC2
CFM-DC1
CFM-DC1
VFM-EX
1
CFM-PO1
VFM-EX2
CFM-ADU1a
CFM-ADU1b
CFM-ADU1b
VFM-EX1
CFM-PA1
3
MX-M1100 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 15
L. PWB
No.
Name
Function / Operation
1
DSPF cnt PWB
Controls the DSPF.
2
DSPF driver PWB
Drives the DSPF motor.
3
DSPF CL inverter PWB
DSPF (back) copy lamp lighting inverter.
4
Double feed detection PWB (DSPF)
Detects double feed of a document.
5
DSPF CCD PWB
DSPF (back) scanning CCD.
6
SCNCNT PWB
Controls the scanner.
7
SCN-Mother PWB
Drives the signal brunch in the scanner unit and the scanner motor.
8
CL inverter PWB
Inverter for lighting the scanner (front) copy lamp.
9
CCD PWB
Scanner (front) read CCD.
10
AFE PWB
Scanner (front) read CD control PWB.
11
CL Thermistor PWB
Scanner (front) copy lamp temperature detection.
12
INFO LED PWB (G)
Status display LED (Green)
13
INFO LED PWB (R)
Status display LED (Red)
14
MFP OPE PWB
Operation panel control.
15
LCD inverter PWB
LCD backlight lighting inverter.
16
KEY PWB
Operation panel key.
17
Double feed detection PWB (Main unit)
Detects double feed of paper.
18
PEDcis PWB
Detects the paper edge.
19
Tandem sensor PWB
Detects presence of Tandem tray 1 and paper.
20
Tandem sensor PWB
Detects presence of Tandem tray 2 and paper.
21
Size detection PWB
Detects the paper size in the tray 3.
22
Side detection PWB
Detects the paper size in the tray 4.
23
PCU PWB
Controls the engine section.
24
HL PWB
Controls the heater lamp.
15
13
17
18
18
46
44
44
41
LSU
20
19
32
47
35
31
43
10
48
16
9
2
8
14
12
23
36
26
1
38
33
33
34
3
6
39
4
27
42
40
21
37
24
22
29
30
28
25
5
11
7
45
MX-M1100 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 16
M. Heater
25
SUB PWB
Supplies power to the PIC PWB, MFPC PWB, W-ICU PWB, HDD, and scanner system PWB.
26
Driver PWB (paper exit)
Drives the paper exit system transport motor.
27
WH PWB
Controls on/off of the dehumidifying heater.
28
AC PWB
Controls the power on the primary side.
29
Option power
Supplies power for the option.
30
Main power
Supplies power to the PCU PWB, DSPF PWB, and driver system PWB.
31
Driver PWB (Paper feed)
Drives the paper feed system transport motor.
32
PIC PWB
Controls on/off of the SUB PWB and the MAIN PWB.
33
High voltage MAIN PWB
Outputs the main charger voltage, the developing bias voltage, the transfer voltage, and the
transfer belt cleaning voltage.
transfer belt cleaning voltage.
34
High voltage SUB PWB
Outputs the bias voltage for transfer cleaning brush.
35
AC terminal PWB
Interfaces the AC power for the option. (85 sheet model for Europe)
36
PCU-Flash PWB
PCU program ROM PWB.
37
MFPC-Flash PWB
MFPC program ROM PWB (2 pcs.)
38
DSPF-Flash PWB
DSPF program ROM PWB.
39
SCN-Flash PWB
Scanner program ROM PWB.
40
LSU PWB
Controls the LSU.
41
BD PWB
Detects the laser synchronous signal.
42
LD PWB
Controls lighting the laser. (4 beams)
43
High voltage PS PWB
Prevents against leakage of the transfer current.
44
DL PWB
Removes the photoconductor surface potential.
45
Process sensor PWB
Detects the toner density.
46
PTDL PWB
Suppresses the potential of paper surface which is not in contact with the photoconductor.
47
MFPC PWB
Controls the image-related items and controls all over the machine.
48
W-ICU PWB
Controls the image-related items.
Signal name
Name
Function / Operation
Note
WH1 DESK
Dehumidifying heater (Paper feed tray 1, 2)
Dehumidifies paper. (Paper feed tray 1, 2)
Option.
WH1 SCN
Scanner dehumidifying heater
Dehumidifies the scanner unit.
Option.
WH2 DESK
Dehumidifying heater (Paper feed tray 3, 4)
Dehumidifies paper. (Paper feed tray 3, 4)
Option.
No.
Name
Function / Operation
WH1 SCN
WH1 DESK
WH2 DESK
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