Lexmark w850 Service Manual page 49

Step Check
8 Check the sensor (buffer path) connection.
Is the above sensor connect properly?
9 Check the drive motor (buffer/transport) by opening the
finisher front door assembly and then closing it.
Does the drive motor (buffer/transport) rotate
normally?
10 Check the drive motor (buffer/transport) connection.
Is the above motor connected properly?
11 Perform a test print.
Does the error still occur?
12 Perform a test print.
Does the error still occur?
Yes No
Replace the After
sensor (buffer reconnecting, go
path). Go to to step 9.
"Sensor (buffer
path) removal"
on page 4-93.
Go to step 11. Go to step 10.
Replace the drive Problem solved.
motor (buffer/
transport). Go to
"Drive motor
(buffer/
transport) and
belt (buffer/
transport)
removal" on
page 4-115.
Replace the Problem solved.
bridge unit
interface card
assembly. Go to
"Bridge unit
interface card
assembly
removal" on
page 4-117.
Go to step 12.
Replace the Problem solved.
finisher controller
card assembly.
Go to "Finisher
controller card
assembly
removal" on
page 4-118.
Diagnostic information
4024-XXX
2-27