Lexmark C78x User Manual

2-28 Service Manual
5061
177.xx error code service check
This error indicates a MPF motor error.
200.03 paper jam service check
S2 sensor was made at an unexpected time.
See “Printer sensors” on page 5-3.
Step Actions and questions Yes No
1 MFP motor/sensor cable—check the MPF motor/
sensor cable to JMPF1 on the system board to make
sure it is seated correctly. See “System board” on
page 5-7 for connector information.
Is the cable seated correctly?
Go to step 2 Install the cable
correctly.
2
Voltage checks—disconnect JMPF1 from the system
board. See “System board” on page 5-7 for
connector information.
Is the cable seated correctly?
Replace the FRU
in the following
order:
•MPF drive
assembly.
See “Multi-
purpose
feeder (MPF)
motor
removal” on
page 4-64.
•MPF motor/
sensor cable.
Replace the
system board.
See “System
board removal”
on page 4-90.
Step Actions and questions Yes No
1 Is sensor flag obstructed by paper debris, out of
position, or broken?
Clear the
obstruction and
reinstall or
replace flag.
Go to step 2
2
Perform the “BASE SENSOR TEST” on page 3-24.
Do both sensor pass the test?
Problem resolved Go to step 3
3
Is the inner deflector out of place, causing sensor flag
to bind?
Install inner
deflector
properly.
Go to step 4
4
Are the sensors connectors fully seated? Go to step 5 Reseat the
sensor
connector.
5
Are connectors at J21 fully seated on the system
board?
Go to step 6 Reseat the
connector on the
system board.
6
Check sensor cables.
Are the cables cut or broken?
Replace the
cables.
Go to step 7
7
Replace the sensor that did not pass the test.
Is the problem resolved?
Replace the
system board.
See “System
board removal”
on page 4-90.

Lexmark C78x Specifications

General

Brand	Lexmark
Model	C78x
Category	Printer
Language	English