Read Sharp MX-FN28 / MX-FN29 Service Manual online
MX-FN28/FN29 OPTION 1 – 26
2. 1K Finisher Punch unit
A. Parts layout
B. Mechanism
Punch unit is located at the paper feed section of Finisher. It makes
two-hole punches on trail edge every time a paper fed from the
main unit stops.
two-hole punches on trail edge every time a paper fed from the
main unit stops.
The paper skew is corrected by skew correction. Misalignment of
paper toward horizontal direction is corrected by moving Punch
unit.
paper toward horizontal direction is corrected by moving Punch
unit.
(1)
Skew correction
1)
A paper is discharged from main unit.
2)
Inlet sensor [A] detects the paper.
3)
The paper touches Entrance roller [B].
4)
The paper is transported after skew correction.
(2)
Registration correction
1)
Horizontal registration detection sensor [A] detects misalign-
ment of paper toward lateral direction.
ment of paper toward lateral direction.
2)
Punch unit is moved by the size of misalignment detected and
completes punching.
completes punching.
(3)
Punch hole alignment adjustment
Punch hole position adjustment for sub scan direction (Two holes
for Japan)
for Japan)
Punch hole position adjustment for main scan direction (Two holes
for Japan)
for Japan)
(4)
Detecting position of paper
Once lead edge of paper came from the main unit is detected by
Horizontal registration detection sensor [A], Punch horizontal regis-
tration detection shift motor [B] starts driving that the Punch unit
starts moving toward front side.
Horizontal registration detection sensor [A], Punch horizontal regis-
tration detection shift motor [B] starts driving that the Punch unit
starts moving toward front side.
Horizontal registration detection sensor [A] which works according
to the signal on paper size transmitted from the main unit controls
paper guide installed driven by Punch horizontal registration detec-
tion shift motor [B] and detects the back side of trail edge of paper.
to the signal on paper size transmitted from the main unit controls
paper guide installed driven by Punch horizontal registration detec-
tion shift motor [B] and detects the back side of trail edge of paper.
No.
Signal name
Parts name
1
PNCHHPFL
Punch hopper full sensor
2
PNCH_M
Punch motor
3
PNCHHP
Punch home position sensor
4
-
Control PWB
5
PNCHMV_M
Punch shift motor
6
PNCHMVHP
Punch shift home position sensor
7
PAPPOSHP
Horizontal registration detection shift home
position sensor
position sensor
8
STSMOV_M
Punch horizontal registration detection shift
motor
motor
9
PAPPOS
Horizontal registration detection sensor
1
1
: ‘17/Apr.
Click on the first or last page to see other MX-FN28 / MX-FN29 service manuals if exist.