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Model
MX-PNX6
Pages
100
Size
20.58 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Service Manual Revised May 2014.
File
mx-pnx6.pdf
Date

Sharp MX-PNX6 Service Manual ▷ View online

MX-FN11  OPERATIONAL DESCRIPTION  4 – 13
a)
A hole is punched along the trailing edge of the 1st sheet.
While two holes are being made, the 3-hole puncher
makes a single round trip in escape direction (moving up
the hole puncher).
b)
Holes are made along the trailing edge of the 2nd sheet.
While two holes are being made, the 3-hole puncher
makes a single round trip in escape direction (moving up
the hole puncher).
(4) Horizontal registration operation
The horizontal registration drive for the punch slide unit is provided
by the horizontal registration motor (FPSM). The home position of
the punch slide unit is detected by the horizontal registration home
position sensor (FPSHPD). The punch slide unit detects the trailing
edge of sheets using the trailing edge sensor (LED5, PT5) and the
horizontal registration sensors (LED1 through 4, SREG1 through
4), and causes a move to a specific position matching the trailing
edge of each sheet (in relation to the size of the sheet).
The horizontal registration operation takes place as follows:
1)
When the leading edge of a sheet from the host machine is
detected by the trailing edge sensor (LED5, PT5), the horizon-
tal registration motor (FPSM) starts to move the punch slide
unit toward the front.
2)
When the horizontal registration sensor (LED1 through 4, PT1
through 4) suited to the paper size signal from the host
machine detects the rear edge of the sheet, the horizontal reg-
istration motor (FPSM) causes a further move to a specific
position, and stops the punch slide unit.
Punch home
position sensor (FPHPD) Sensor flag
Punch shaft
Eccentric cam
Die
Die
Hole
puncher
Paper
[punch shaft at rest/
home position]
Waste paper
[punch shaft CW rotation
by 90°/hole made]
[punch shaft CW rotation by 180°/
end of punching operation]
[punch shaft at rest/
home position]
[punch shaft CW rotation
by 90°/punch at upper limit]
[punch shaft CW rotation by 180°/
punch back to initial position]
[punch shaft at rest/
home position]
[punch shaft CCW rotation
by 90°/hole made]
[punch shaft CCW rotation by 180°/
end of punching operation]
[punch shaft at rest/
home position]
[punch shaft CCW rotation
by 90°/punch at upper limit]
[punch shaft CCW rotation by 180°/
punch back to initial position]
Punch slide unit
Trailing edge sensor
(LED5,PTR5)
Horizontal registration motor (FPSM)
Direction of
paper delivery
Paper
Horizontal registration sensor 1 (LED1 PTR1)
;used to detect the edge of sheets of A3, A4, LTR,
279mm x 432mm (11x17).
Horizontal registration sensor 2 (LED2 PTR2)
;used to detect the edge of sheets of B4, B5, LTRR, LGL.
Horizontal registration sensor 3 (LED3 PTR3)
;used to detect the edge of sheets of A4R.
Horizontal registration sensor 4 (LED4 PTR4)
;used to detect the edge of sheets of B5R.
MX-FN11  OPERATIONAL DESCRIPTION  4 – 14
3) When the trailing edge sensor (LED5, PT5) detects the trailing
edge of the sheet, the drive of the punch feed motor (FSIFM) is
stopped, thereby stopping the sheet. Then, the punch motor
(FPNM) is driven to punch holes in the sheet.
4) When the punching operation ends, the punch feed motor
(FSIFM) of the finisher is driven and, at the same time, the hor-
izontal registration motor (FPSM) is rotated in reverse to return
the punch slide unit to its home position.
5) For each sheet that arrives in succession, the punch slide unit
is returned to its home position, and is caused to repeat steps
1 through 4.
Punch
Trailing edge sensor
(LED5,PTR5)
Horizontal registration
sensor (LED1-4,PTR1-4)
Punch home position sensor
(FPHPD)
Horizontal registration home
position sensor (FPSHPD)
Horizontal registration motor
(FPSM)
Punch motor (FPNM)
Punch feed motor (FSIFM)
CW rotation
CCW rotation
MX-FN11  OPERATIONAL DESCRIPTION  4 – 15
7. Detecting jams
A. Detecting jams in finisher
The following sensors are used to detect the presence/absence of paper and to make sure that sheets are moved properly:
-  Inlet sensor (FED)
-  Feed path sensor (FPDD)
A jam is identified with reference to the presence/absence of paper at each specific sensor at the times programmed in the memory of the
microprocessor (CPU) on the finisher controller PCB.
When the CPU identifies a jam, it suspends the finisher's delivery operation and informs the host machine DC controller of the presence of a
jam. After the paper jam is removed, and all the doors are closed, the finisher checks whether or not paper is being detected by the above two
sensors (inlet sensor, No.1 delivery sensor). If the sensors detect a copy, the finisher unit judges that paper jams have not completely been
removed, and sends the paper jam removal signal to the host machine again.
Jam type
Sensor
Jam condition
Code
Inlet sensor delay
FED
The inlet sensor (FED) does not detect paper sheet even if predetermined time 
(distance) has passed after receiving delivery signal from the host machine.
FED_N
Inlet sensor stationary
FED                                      The sheet does not move past from the inlet sensor (FED) even if predetermined 
time (distance) has passed after the inlet sensor (FED) detects the sheet.
FED_S
Feed path sensor delay
FPDD
The delivery path sensor (FPDD) does not detect paper sheet even if 
predetermined time (distance) has passed after the inlet sensor (FED) detects the 
sheet.
FHS_N
Feed path sensor stationary
FPDD
The sheet does not move past from the feeder path sensor (FPDD) even if 
predetermined time (distance) has passed after the feed path sensor (FPDD) 
detects the sheet.
FHS_S
Premature arrival
FED
The inlet sensor (FED) detects paper before receiving delivery signal from the host 
machine.
FIN_TIME
Staple
FSHPD
When the staple motor (FFSM) is rotating clockwise, the staple home position 
sensor (FSHPD) does not turn on within the predetermined period after it has 
turned off. However, the sensor turns on within the predetermined period after the 
motor (FFSM) has been rotated counterclockwise.
*Since the staple home position sensor (FSHPD) is incorporated in the stapler, the 
stapler must be replaced if the sensor is malfunctioned.
FSTPLJ
Power ON
FED, FPDD
When power is supplied, either of the inlet sensor (FED) or delivery path sensor 
(FPDD) detects a sheet.
-
Door open
FCD, FFDD, FFDD
One of the upper cover open/close sensor (FCD), front cover open/close sensor 
(FFDD), front cover close detector switch (FFDD) detects the open of the cover.
-
FPDD
FED
1
: ‘14/May
1
MX-FN11  OPERATIONAL DESCRIPTION  4 – 16
C. Checking for a jam in punch module (MX-PN12A/B/C/D)
The finisher judges to be jammed, and sends the jam signal to the host machine when the conditions shown below occur. Then, the host
machine may stop copy operation, as well as displays paper jam sign.
Jam type
Sensor
Jam condition
Code
Feed delay
LED5, PTR5
The trailing edge sensor (LED5, PTR5) does not detect paper even if the specified time (distance) has 
passed after delivery signal is received from the host machine.
FPNCHJ
Feed residence
LED5, PTR5
The sheet does not come through the trailing edge sensor (LED5, PTR5) even if the specified time 
(distance) has passed after the trailing edge sensor (LED, PTR5) detects paper.
FPNCHJ
Punch
FPHPD
The sensor does not turn ON again even if the specified time has passed after the punch home position 
sensor (FPHPD) turns off.
FPNCHJ
Power ON
LED5, PTR5
The sheet is detected by the trailing edge sensor (LED, 5, PTR5) after power is supplied.
-
1
: ‘14/May
1
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