AR-M550 (serv.man18). (11) Maintenance list - Sharp Copying Equipment Service Manual (repair manual). Page 3

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AR-M550/M620  MAINTENANCE LIST  11 - 3
AR-M550U/M550N (PM: 250K)
When 
calling 
250K 500K 750K 1000K 1250K 1500K 1750K 2000K
Remark
AR-620U/M620N (PM: 300k)
300K 600K 900K 1200K 1500K 1800K 2100K 2400K
Unit name  
No. Part name
LCC
Paper 
feed 
separation 
section
1
Paper pickup roller
/Paper feed rollers
(Note 3)
2
Torque limiter
(Note 3)
Transport 
section
3
Transport rollers
4
Transport paper guides
Drive 
section
5
Gears
(Specified 
position)
6
Belt
Others
7
Sensors
Saddle 
finisher
Punch unit
Transport 
section
1
Transport rollers
2
Transport paper guides
Drive 
section
3
Gears
(Specified 
position)
4
Belts
Staple 
process 
section
5
Knurling belt
(Note 4)
6
Paddle
(Note 4)
Others
7
Sensors
8
Discharge brush
Stapler unit
Replacement 
reference: 
Replace the 
unit at 500K 
staple.
Stitcher unit (Stapler unit for saddle)
Replacement 
reference: 
Replace the 
unit at 200K 
staple.
Punch unit
Replacement 
reference: 
Replace the 
unit at 1000K.
Staple cartridge
User 
replacement at 
every 5000 pcs.
Stitcher staple cartridge (Staple cartridge for saddle)
User 
replacement at 
every 2000 pcs.
Inserter
Paper 
feed 
separation 
section
1
Paper pickup roller
/Paper feed rollers
(Note 5)
2
Torque limiter
(Note 5)
Transport 
section
3
Transport rollers
4
Transport paper guides
Drive 
section
5
Gears
(Specified 
position)
6
Belts
Others
7
Sensors
(Note 3)
Replacement reference: For replacement, refer to each paper feed counter value.
Paper feed roller related section: 200K or 1 year
Torque limiter: 800K
(Note 4)
Replacement reference: For replacement, refer to the finisher paper exit counter value.
Knurling belt: 1000K
Paddle: 1000K
(Note 5)
Replacement reference: For replacement, refer to the inserter paper feed port counter value. 
Paper feed roller related section: 150K or 1 year
Torque limiter: 400K
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