Diagnostic information
2-47
4024-110
287.02 Sensor (upper media exit) on jam B
5
Check the drive motor (buffer/transport) for rotation.
Check the above motor by opening the finisher front
door assembly and then closing it.
Does the drive motor (buffer/transport) rotate properly?
Go to step 7.
Go to step 6.
6
Check the drive motor (buffer/transport) connection.
Is the above motor connected properly?
Replace drive
motor (buffer/
transport). Go to
“Drive motor
(buffer/
transport) and
belt (buffer/
transport)
removal” on
page 4-115
.
Replace the
connection.
7
Check the drive motor (exit) for correct operation.
Check the above motor by opening the finisher front
door assembly and then closing it.
Does the motor (exit) rotate normally?
Go to step 9.
Go to step 8.
8
Check the drive motor (exit) connection.
Is the above motor connected properly?
Replace the drive
motor (exit). Go
to
“Drive motor
(exit) assembly
and belt (exit)
removal” on
page 4-113
.
Replace the
connection.
9
Perform a test print.
Does the error still occur?
Replace the
finisher controller
card assembly.
Go to
“Finisher
controller card
assembly
removal” on
page 4-118
.
Problem solved.
Step
Check
Yes
No
1
Check the media path.
1. Open the finisher front door assembly of the
finisher.
2. Remove the top cover and left upper cover.
3. Open the entrance pinch guide assembly upward.
4. Check four media entrance pinch guide pinch rolls
of the entrance pinch guide assembly and media
entrance roll assembly by turning them with your
fingers.
Are the media entrance pinch guide pinch rolls
installed correctly and do they rotate smoothly?
Go to step 2.
Clean or replace
the appropriate
roller, and clean
the media path.
2
Are the four media entrance pinch guide pinch rolls of
the entrance pinch guide assembly and media
entrance roll assembly free of damage?
Go to step 3.
Clean or replace
the appropriate
roller and clean
the media path.
Step
Check
Yes
No
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 ...