MX-DE21. Service Manual. - Sharp Copying Equipment Service Manual (repair manual). Page 7

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MX-DE21  MAINTENANCE  3 – 1
MX-DE21
Service Manual
 
[3] MAINTENANCE
1. Maintenance list
×
:Check (clean, replace or adjust as required)  ○ :Clean
:Replace △ :Adjust ☆ :Lubricate
On greasing
Greasing is not always necessary for every maintenance. In the following cases, check and grease.
-   There are some noises.
-   Many jams occur frequently. (Check the jam history.)
 For the part code of grease to be used, refer to [15] “Tool List” in service manual (00ZMX3640/S1E).
Cleaning of the paper feed and paper transport system sensors and detectors
Cleaning of the paper feed and paper transport system sensors and detectors is not always necessary for every maintenance. In the following
case, check and clean. 
-   A trouble or jam is generated because of the sensors or detectors. (Check the jam history.)
Torque limiter check and replacement
Torque limiter check or replacement is not always necessary for every maintenance. In the following cases, check and replace.
-   There are some noises.
-   Many jams occur frequently. (Check the jam history.)
Alcohol used for cleaning
 
 Be sure to use ethanol for cleaning.
Unit work 
sequence
Unit name
Parts 
work 
sequence
Part name
When 
calling
When 
machine 
cycle
Remarks
1
Tray 3 paper feed unit
1
Paper pickup roller
As a rough guide, these rollers should be replaced when 
each tray paper feed counter reaches a value of 100K or 
when one year has elapsed since the start of use.
2
Paper feed roller
3
Separation roller
4
Torque limiter
As a rough guide, the torque limiter should be 
replaced when each tray paper feed counter reaches 
a value of 100K.
---
Each sensor
---
Each paper guide
Clean with alcohol. 
2
Tray 4 paper feed unit
5
Paper pickup roller
As a rough guide, these rollers should be replaced when 
each tray paper feed counter reaches a value of 100K or 
when one year has elapsed since the start of use.
6
Paper feed roller
7
Separation roller
8
Torque limiter
As a rough guide, the torque limiter should be 
replaced when each tray paper feed counter reaches 
a value of 100K.
---
Each sensor
---
Each paper guide
Clean with alcohol. 
3
Level transport unit
9
Level transport roller 
R
10
Level transport roller 
L
4
Desk transport unit
11
Transport roller 3
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