MX-FN21, MX-FN22, MX-PN13 (serv.man3). Service Manual (Revised February 2017). - Sharp Copying Equipment Service Manual (repair manual). Page 14

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TECHNICAL DESCRIPTIONS > Basic Composition
TECHNICAL DESCRIPTIONS > Basic Composition
Control functions
Item
Reference page
1. Transport section
Outline
Refer to page 2-3.
Basic operations
Refer to page 2-4.
Straight transport operation
Refer to page 2-4.
Process tray transport operation
Refer to page 2-6.
Buffer transport operation
Refer to page 2-6.
2. Load tray section
Stack tray operation
Refer to page 2-9.
Shutter operation
Refer to page 2-11.
3. Process tray 
section
Outline
Refer to page 2-12.
Basic operations
Refer to page 2-13.
Load operation
Refer to page 2-14.
Shift operation
Refer to page 2-15.
Staple operation
Refer to page 2-16.
Bundle exit operation
Refer to page 2-18.
Oscillation height detection control 
Refer to page 2-18.
4. Saddle Stitcher 
Section
Refer to page 2-19.
5. Controller section
Outline
Refer to page 2-28.
Finisher controller PWB
Refer to page 2-29.
6. Power source
Outline
Refer to page 2-32.
Protection function
Refer to page 2-32.
T-2-1
Transport Section
Outline
The transport section follows instructions from the finisher controller PWB to transport paper 
to the load tray section.
The paper transport path to the load tray section is provided with two sensors: the Finisher 
paper enter detector (FNS101) and the Finisher paper JAM detector (FNS102) for detection 
of paper transport and paper jams.
[1]
[2]
FNS101
FNS102
Finisher controller PWB
[1]
Transport JAM detection signal
FNS102
Finisher Paper JAM Detector
[2]
Paper enter detection signal 
FNS101
Finisher paper enter detector
F-2-7
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