Diagnostic aids
3-25
4024-110
•
Stapler unit motor (in the stapler unit assembly)
–
A DC motor to activate the stapler unit assembly for stapling
–
Clockwise rotation of this motor enables stapling, while counterclockwise rotation returns the stapler
unit assembly.
Upper media bin
Operation
The upper media bin contains the sensor (upper media bin full) to detect the media stack volume in the upper
media bin.
Once the sensor detects “full stack” (500 sheets) of the upper media bin, ejection of media to the upper media
bin is inhibited until “full stack” is reset.
Functions of upper media bin sensors
•
Sensor (upper media exit)
–
A photo-interrupter to detect that media has come to the upper media exit roll assembly top at the exit
of the upper media bin
–
When media reaches the upper media exit roll assembly top, the actuator leaves the sensing area,
which turns the sensor to “H” (+5 V dc).
•
Sensor (upper media bin full)
–
A reflective photo-sensor to detect the media stack volume in the upper media bin
–
It turns “H” (+5 V dc) when it detects “full stack”.
Sensor (stapler carriage HP)
Stapler carriage motor asm
Stapler
rack gear
Summary of Contents for W850dn
Page 8: ...viii Finisher Service Manual 4024 110 ...
Page 12: ...xii Finisher Service Manual 4024 110 ...
Page 22: ...1 6 Finisher Service Manual 4024 110 ...
Page 155: ...Repair information 4 3 4024 110 5 Remove the bridge unit assembly B from the printer B ...
Page 240: ...4 88 Finisher Service Manual 4024 110 25 Remove the main paddle shaft assembly Rear J F K L ...
Page 272: ...4 120 Finisher Service Manual 4024 110 ...
Page 282: ...5 10 Finisher Service Manual 4024 110 ...
Page 284: ...6 2 Finisher Service Manual 4024 110 ...
Page 290: ...7 6 Finisher Service Manual 4024 110 Assembly 4 Covers 3 7 5 9 2 10 6 4 8 1 ...
Page 292: ...7 8 Finisher Service Manual 4024 110 Assembly 5 Covers and front door 3 7 5 2 6 4 1 ...
Page 294: ...7 10 Finisher Service Manual 4024 110 Assembly 6 Stacker bin lift 5 4 6 3 1 2 8 2 3 3 3 1 7 7 ...
Page 298: ...7 14 Finisher Service Manual 4024 110 Assembly 8 Stapler 3 7 5 2 6 4 8 1 ...
Page 300: ...7 16 Finisher Service Manual 4024 110 Assembly 9 Media eject 8 4 9 6 2 7 5 1 3 11 2 3 6 5 10 ...
Page 310: ...7 26 Finisher Service Manual 4024 110 Assembly 14 Electronics 3 5 2 6 4 1 ...
Page 312: ...7 28 Finisher Service Manual 4024 110 Assembly 15 Cables 1 3 7 5 2 6 4 1 ...
Page 316: ...7 32 Finisher Service Manual 4024 110 ...
Page 322: ...I 6 Finisher Service Manual 4024 110 ...