DOWNLOAD Sharp AR-M550 (serv.man12) Service Manual ↓ Size: 13.91 MB | Pages: 71 in PDF or view online for FREE

Model
AR-M550 (serv.man12)
Pages
71
Size
13.91 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / (6b) Laser scan unit, Image process section, Scanner section, Fusing section, SPF section
File
ar-m550-sm12.pdf
Date

Sharp AR-M550 (serv.man12) Service Manual ▷ View online

AR-M550/M620  DETAILS OF EACH SECTION  6 - 105
(2) Maintenance and parts replacement 
(Replacement parts)
a. Fusing unit
1) Open the left door unit.
2) Remove the blue fixing screw on the front side.
3) Release the fixing members on the rear frame side.
4) Release the right and left lock levers of the fusing unit to remove
the fusing unit.
No.
Unit
Parts
a
Fusing unit
1
Heat roller separation pawl
2
Pressing roller separation pawl
✕▲
3
Heat roller
✕▲
4
Heater lamp 1
5
Heater lamp 2
6
Heat roller gear
✕▲
7
Thermistor (upper)
✕▲
8
Pressing roller
✕▲
9
Cleaning scraper
✕▲
10
Paper guide
11
CL brush
12
Sub-heat roller
13
Sub-heat roller bearing
14
Thermistor (lower)
15
Sub heater lamp
16
Thermistor 1
17
Thermistor 2
18
Thermistor 3
19
Cleaning sheet
✕▲
a-7
a-3
a-6
a-13
a-13
a-9
a-3
a-3
a-10
a-11
a-1
a-1
a-1
a-2
a-2
a-2
a-8
a-9
a-19
a-12
a-15
a-18
a-18
a-14
a-14
a-4
a-5
a-16
17
a-7
a-7
a-16
a-17
2
1
AR-M550/M620  DETAILS OF EACH SECTION  6 - 106
a-1. Heat roller separation pawl
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Remove the heat roller separation pawl unit.
3) Remove the heat roller separation pawl.
a-2. Pressing roller separation pawl
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Open the pressure roller separation pawl unit.
3) Remove the pressure roller separation pawl.
a-3. Heat roller
a-4. Heater lamp 1
a-5. Heater lamp 2
a-6. Heat roller gear
a-7. Thermistor (upper)
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Alternately loosen the screws to release pressure.
3) Remove the blue screw to open the fusing unit.
4) Remove the lamp fixing screw.
5) Remove the heater lamp 1 and 2.
AR-M550/M620  DETAILS OF EACH SECTION  6 - 107
6) Remove the heat roller unit.
7) Clean the upper thermistor.
8) Remove the ring to remove the gear bearing.
[Caution when Attaching]
• Affix the lamp fixing screw from the opposite side of the drive.
a-8. Pressing roller
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Release the pressure. (See “a-4. Heater lamp 1” in this section)
3) Remove the blue screw to open the fusing unit.
4) Remove the fusing roller (pressing) unit.
5) Remove the bearing from the fusing roller (pressing).
[Note for assembly]
• Wind paper with the scraper tip without scratching the pressure
roller, and insert it.
• When inserting, be careful not to deform the scraper.
AR-M550/M620  DETAILS OF EACH SECTION  6 - 108
• Engage the bearings F/R with the pressure lever concaves and pull
out the paper from the scraper side.
• When closing the unit, first close the upper unit from the above in
order to prevent against deform of the scraper.
a-9. Cleaning scraper
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Open the fusing unit.
3) Remove the pressure roller unit.
4) Remove the fusing cleaning scraper.
[Cleaning]
• Clean and remove paper dust and toner remained in the concave of
the scraper holder.
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