Lexmark C950 Service Manual page 160

5058-030
Step Action and questions
Check the sensor (tray 3 feed
4
out) for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SENSOR TESTS.
3. Touch PRINTER SENSOR
TESTS.
4. Touch Sensor (tray 3 feed
out).
Does the display on the
operator panel change every
time the sensing area of the
above sensor is interrupted or
blocked?
Check the sensor (tray 3 feed
5
out) for proper connection.
Is the above component
properly connected?
Check the tray module upper
6
transport motor for proper
operation.
When performing
motor tests, ensure
that all cover and
door interlock
switches are
overridden.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch PRINTER MOTOR
TESTS.
4. Touch 1TM/3TM/TTM upper
transport motor.
Does the above component
operate properly?
Check the tray module upper
7
transport motor for proper
connection.
Is the above component
properly connected?
Check the the tray module
8
controller PCBA for proper
connection.
Is the above component
properly connected?
POR the machine, and perform a
9
print test. Go to
"PRINT TESTS"
on page 3-22.
Does the error continue?
Service Manual
2-112
Yes
Go to step 6.
Clean or replace the sensor (tray
3 feed out). Go to
"Sensor (tray
module feedout) removal" on
page 4-200.
Go to step 8.
Replace the tray module upper
transport motor. Go to
"Tray
module upper transport motor
removal" on page 4-214.
Replace the tray module
controller PCBA. Go to
"Tray
module controller PCBA
removal" on page 4-206.
Go to step 9.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-98.
No
Go to step 5.
Replace the connection.
Go to step 7.
Replace the connections.
Replace the connections.
Problem resolved
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