Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man36) Service Manual ▷ View online
MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 12
12
Transport roller 4 (Drive)
Transports paper from the transport rollers 1 and 3 to the transport roller 5.
13
Transport roller 5 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to
paper.
14
Transport roller 5 (Drive)
Transports paper to the registration roller. Paper is buckled between the registration roller and this roller to
correct the paper skew and the relation between images and paper.
15
Registration roller (Drive)
Transports paper to the transfer section. / Controls the transport timing of paper and adjusts relative relations
between the image and paper.
16
Registration roller (Idle)
Apply a pressure to paper and the registration roller to provide the transport power of the transport roller to
paper.
17
Transport roller 6 (Drive)
Transports paper transported from the fusing section to the paper exit section and the switchback section.
18
Transport roller 6 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to
paper.
19
Transport roller 7 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to
paper.
20
Transport roller 7 (Drive)
Transports paper transported from the switchback section to the transport roller 8.
21
Transport roller 8 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to
paper.
22
Transport roller 8 (Drive)
Transports paper transported from the transport roller 7 to the transport roller 9.
23
Transport roller 9 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to
paper.
24
Transport roller 9 (Drive)
Transports paper transported from the transport roller 8 to the transport roller 5.
25
Paper exit roller 1 (Idle)
Apply a pressure to paper and the paper exit roller to provide the transport power of the paper exit roller to
paper.
26
Paper exit roller 1 (Drive)
Transports paper to the left paper exit section.
27
Paper exit roller 2 (Idle)
Apply a pressure to paper and the paper exit roller to provide the transport power of the paper exit roller to
paper.
28
Paper exit roller 2 (Drive)
Discharges paper to the right paper exit tray.
29
Fusing roller (F1)
Heats the fusing belt.
30
Fusing roller (F2)
The cushion layer of the roller forms a wide nip between the fusing belt and fusing roller (B).
31
Fusing roller (B)
Heats the back surface of paper to fuse toner on the paper.
32
Fusing web roller
Cleans the fusing roller (B) and the fusing belt.
33
Document pickup roller (RSPF)
Feeds a document to the paper feed roller.
34
Paper feed roller (RSPF)
Feeds a document to the transport section. Makes a buckle on paper between the registration roller and this
roller to correct the start position of document skew and document image scan.
35
Separation roller (RSPF)
Separates a document to prevent double-feeding.
36
Transport auxiliary roller (RSPF)
Reduces friction between a document and the paper guide to transport the document smoothly to the
registration roller.
37
Registration roller (Drive) (RSPF)
Transports a document to the transport roller 2. / Controls the transport timing of the document and adjusts
the document scanning timing.
38
Registration roller (Idle) RSPF)
Apply a pressure to a document and the registration roller to provide the transport power of the transport
roller to the document.
39
Transport roller 2 (Idle) (RSPF)
Apply a pressure to a document and the transport roller to provide the transport power of the transport roller
to the document.
40
Transport roller 2 (Drive) (RSPF)
Transports a document transported from the registration roller to the document scanning section.
41
Transport roller 3 (Idle) (RSPF)
Apply a pressure to a document and the transport roller to provide the transport power of the transport roller
to the document.
42
Transport roller 3 (Drive) (RSPF)
Transports a document transported from the document scanning section to the paper exit roller.
43
Paper exit roller (Idle) (RSPF)
Apply a pressure to a document and the paper exit roller to provide the transport power of the paper exit roller
to the document.
44
Paper exit roller (Drive) (RSPF)
Discharges a document. Switchbacks the document and transports it to the registration roller when scanning
the back surface.
45
Transport roller 10 (Drive)
Transports paper from manual paper feed section to the transport roller 9.
46
Transport roller 10 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to
paper.
47
Paper exit roller 3 (Drive)
Transports paper to paper exit roller 2 or transport roller 7.
48
Paper exit roller 3 (Idle)
Apply a pressure to paper and the paper exit roller to provide the transport power of the paper exit roller to
paper.
No.
Name
Function/Operation
MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 13
10. Lamps
Signal name
Name
Type
Function/Operation
CCFT
LCD backlight
LED
LCD backlight
CL_ON
Scanner lamp
LED
Radiates light onto a document for the CCD to scan the document image.
DL_BK
Discharge lamp (K)
LED
Discharges electric charges on the OPC drum (K).
DL_C
Discharge lamp (C)
LED
Discharges electric charges on the OPC drum (C).
DL_M
Discharge lamp (M)
LED
Discharges electric charges on the OPC drum (M).
DL_Y
Discharge lamp (Y)
LED
Discharges electric charges on the OPC drum (Y).
HL_LM
Heater lamp (HL_LM)
Halogen lamp
Heats the fusing roller (B).
HL_UM/US
Heater lamp (HL_UM/US)
Halogen lamp
Heats the fusing roller (F1) and the fusing belt.
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MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 14
11. Fans and filter
Signal name
Name
Function/Operation
FUFM
Fusing cooling fan
Cools the fusing section and the paper exit section.
POFM
Paper exit cooling fan
Cools the fusing section and the paper exit section.
POFM2
Paper exit cooling fan
Cools the fusing section and the paper exit section.
PROFM
Process fan motor 1
Discharges air and cools the process section.
PROFM2
Process fan motor 2
Discharges air and cools the process section.
PSFM
Power cooling fan motor Cools the power unit.
LSUFM
LSU cooling fan
Cools the LSU.
No.
Name
Function/Operation
1
Toner filter
Prevents toner splash.
2
Ozone filter
Absorbs ozone generated in the image process section.
0/&-
02/&-
02/&-
&5&-
03&-
0/&-
MX-3640N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 15
12. Heater
Signal name
Name
Function/Operation
DHS
Scanner dehumidifying heater
Dehumidifies the scanner section to prevent it from dew condensation.
DHT1
Paper dehumidifying heater (Paper feed tray 1)
Dehumidifies the paper feed tray section to prevent paper from absorbing humidity which
causes degraded image quality and paper jams.
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