Duplo DF-920 Maintenance Manual page 76

(25) Simulation mode (Code No.27)
Mode for operating each mechanism without using paper.
The simulation mode operates when the start key is pressed, and stops when the stop key is pressed.
Note Note
If operating the unit in the simulation mode, be sure to remove the paper feed ring.
(26) Folding stopper parallelity mode (Code No.28)
Mode for making the folding stoppers of folding plates 1 and 2 parallel.
See See
"2-6-10. Adjusting the parallelity of the folding stoppers" in CHAPTER 1 MECHANISM
(27) Sensor/switch check (Code No.31)
Mode for checking the states of sensors and switches.
Sensors and switches which are ON are displayed in alphabet at the second line of the LCD. Those which are
OFF are displayed as "–".
The displays correspond to sensors and switches from the left side in the following order.
[A] Paper feed inlet sensor → [B] Paper ejection outlet sensor → [C] Paper switch →
[D] Stacker roller home sensor → [E] Folding plate 1 home sensor →
[F] Folding plate 2 home sensor → [G] Paper feed tray upper limit detection switch →
[H] Paper feed tray lower limit detection switch → [I] Paper ejection cover sensor →
[J] Top cover switch → [K] Side cover switch → [L] Folding plate 1 set switch →
[M] Folding plate 2 set switch
Turning sensors and switches ON/OFF changes the corresponding display (alphabet or "–"), and a buzzer
sounds.
(28) Paper size detection sensor check (Code No.32)
Mode for checking the state of the paper size detection sensor.
Sensors which are ON are displayed as "
displayed as "–". UK model displays correspond to the B6, A5, B5, A4, B4, and A3 paper size detection sensors
from the left side in order.
For USA models, "
STMT, LTR, LGR, and LGL paper size detection sensors in order.
The displays change when the paper feed guides are moved, and a buzzer sounds.
The LGL detection sensor is the opposite to other sensors, in that "–" is displayed when it is ON, and "
Note Note
when OFF.
(29) Main motor index sensor check (Code No.33)
Mode for checking the index sensor inside the main motor.
When the main motor shaft is rotated by rotating the jam correction knob or center press roller, pulse input is
performed, and the number of pulses is counted up and displayed at the second line of the LCD.
When the main motor shaft is rotated once, and the number of pulses should be added with 15.
The number of pulses displayed is reset to 0 when the power is turned OFF.
Note Note
The number of pulses is counted up even if the main motor shaft is rotated in the normal or reverse
directions.
(30) Folding plate index sensor check (Code No.34)
Mode for checking the index sensor of folding plates 1 and 2.
Check the changes in the states of each sensor by looking at the changes in the number of pulses displayed at
the second line of the LCD.
Pressing the "+" key of the folding plate 1 folding stopper adjusting key counts up the number of pulses displayed
at the left side of the second line of the LCD, and pressing the "–" key counts down the display.
Pressing the "+" key of the folding plate 2 folding stopper adjusting key counts up the number of pulses displayed
at the right side of the second line of the LCD, and pressing the "–" key counts down the display.
If the direction which changes the number of pulses is opposite to the above, check if the connectors of
Note Note
index sensors A and B of the corresponding folding plate are connected reverse.
2-20
" is displayed at the leftmost side, and the second display onwards corresponds to the INV,
12H-M12M0-0309-0
" at the second line of the LCD, and those which are OFF are
"