Diagnostic information
2-89
4024-110
4
Check the bridge unit assembly top cover actuator.
Paint both faces of the actuator with a black permanent
marker.
Does the error continue?
Go to step 4
Problem solved.
5
Check the sensor (bridge unit top cover interlock)
installation.
Is the sensor (bridge unit top cover interlock) installed
properly?
Go to step 5.
Reinstall the
sensor (bridge
unit top cover
interlock).
Go to
“Sensor
(bridge unit top
cover interlock)
removal” on
page 4-15
.
6
Check the sensor (bridge unit top cover interlock) for
proper operation.
Perform the sensor (bridge unit top cover interlock)
test.
1. Enter the Diagnostics Menu.
2. Touch FINISHER TESTS.
3. Touch Sensor Test.
4. Touch Cover and Door.
5. Touch Door F bridge top.
Does the operator panel display change every time the
detection point of the sensor (bridge unit top cover
interlock) is blocked?
Go to step 7.
Go to step 6.
7
Is the sensor (bridge unit top cover interlock)
connected properly?
Replace the
sensor (bridge
unit top cover
interlock).
Go to
“Sensor
(bridge unit top
cover interlock)
removal” on
page 4-15
.
Replace the
connection.
8
Does the error still occur when the power is turned on?
Go to step 8.
Problem solved.
9
Replace the finisher controller card assembly.
Go to
“Finisher controller card assembly removal”
on page 4-118
.
Does the error still occur when the power is turned on?
Replace the
printer engine
card assembly.
Refer to the
Printer Service
Manual.
Problem solved.
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 ...