Diagnostic information
2-73
4024-110
2
Check the sensor (punch unit HP) for correct operation.
Perform the sensor (punch unit HP) test.
Remove the rear upper cover. Go to
“Rear upper
cover removal” on page 4-24
.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Punch and Staple.
5. Select Punch unit HP.
Move the rack gear in the punch unit assembly
manually by hand.
Does the display on the operator panel change every
time the sensing area of the sensor (punch unit HP) is
blocked?
Go to step 4.
Go to step 3.
3
Is the sensor (punch unit HP) and punch sensor cable
assembly connected properly?
Replace the
sensor (punch
unit HP). Go to
“Sensor (punch
hole select),
sensor (punch
cam front), and
sensor (punch
unit HP)
removal” on
page 4-49
.
Replace the
connection.
4
Check the punch unit motor for correct operation.
Perform the 2 punch test.
Remove the rear upper cover. Go to
“Rear upper
cover removal” on page 4-24
.
1. Enter the Diagnostic mode.
2. Select FINISHER TESTS.
3. Select Hole Punch Test.
4. Select 2 Punch test.
Does the punch unit motor rotate normally and punch
holes in the media?
Go to step 6.
Go to step 5.
5
Is the punch unit motor and punch drive cable
assembly connected properly?
Replace the
punch unit motor.
Go to
“Punch
unit motor
assembly
removal” on
page 4-47
.
Replace the
connection.
6
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
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 ...