Service Checks - Hcf; Sensor (Tray 5 Feed-Out) On Jam - Lexmark W850n Service Manual

4024-110

Service checks - HCF

245.00 Sensor (tray 5 feed-out) on jam

Step
1 Check the paper path.
Open the HCF top door assembly
Open the HCF media feed unit assembly.
Check these items by turning them with your fingers.
Are the pick roll, feed roll, separation roll, HCF media
transport roll assembly, and roll attached on the HCF
top door assembly installed correctly?
2 Are the pick roll, feed roll, separation roll, HCF media
transport roll assembly, and roll attached on the HCF
top door assembly free of excess wear and
contamination?
3 Check the sensor (pre-feed) for proper operation.
1. Enter Diagnostics mode.
2. Select INPUT TRAY TESTS.
3. Select Sensor Tests.
4. Select Tray 5.
5. Select Pre-feed.
Pull the HCF unit assembly from the printer.
Open the HCF top door assembly.
Open the HCF media feed unit assembly.
Does the display on the screen change every time a
piece of white paper is placed over the sensing area of
the above sensor?
2-70
Options Service Manual
Check Yes
Go to step 2. Clean or replace the
appropriate roll, and
clean the paper
path.
Go to
roll assembly
removal" on
page
feed roll assembly
removal" on
page
separation roll
assembly removal"
on page
"HCF media
transport roll
assembly removal"
on page
Go to step 3. Clean or replace the
appropriate roll, and
clean the paper
path.
Go to
roll assembly
removal" on
page
feed roll assembly
removal" on
page
separation roll
assembly removal"
on page
"HCF media
transport roll
assembly removal"
on page
Go to step 5. Go to step 4.
No
"HCF pick
4-142, "HCF
4-143, "HCF
4-145, and
4-149.
"HCF pick
4-142, "HCF
4-143, "HCF
4-145, and
4-149.