HP M750 series

Table 3-53 Causes and solutions for residual media jams
Cause Solution
A piece of paper remains at the sensor detecting
the jam.
Make sure that all paper, including small bits of paper, are removed from the
product when a jam is removed.
The sensor detecting a residual media jam is not
working.
Test each sensor using the manual sensor test. See Manual sensor test for
information. If the sensor does not respond, replace the component indicated:
●
TOP sensor (PS5): Replace the registration sensor assembly.
●
Fuser-output sensor (PS6): Replace the fuser.
●
Fuser loop sensors 1 and 2 (PS7 and PS8): Replace the fuser.
If service was recently performed on the
product, a sensor connector might be
disconnected.
Run the manual sensor tests to verify which sensor detects the media. See Manual
sensor test or Tray/Bin manual sensor test for information. Reconnect the
corresponding sensor connector:
●
TOP sensor: Connector (J122) on the DC controller PCA
●
Fuser-output sensor: Connector (J131) on the DC controller PCA
●
Fuser Loop sensor 1 or 2: Connector (J131) on the DC controller PCA
Jams in Tray 3, 4, 5, and 6
Table 3-54 Causes and solutions for pickup delay and pickup stationary jams
Cause Solution
The paper-feeder pickup roller is worn or
deformed.
Replace the pickup roller.
The paper-feeder separation roller is worn or
deformed.
Replace the separation roller.
The paper-feeder feed roller is worn or
deformed.
Replace the feed roller.
Poor contact of the paper-feeder media-feed
sensor connectors
Disconnect and reconnect the sensor connector.
A tray feed sensor is defective. Run the manual sensor test to verify that the paper-feeder media feed sensor is
functioning properly. See Tray/Bin manual sensor test for information. If it is not,
replace the paper pickup assembly of the specific tray.
Poor contact of a paper-feeder pickup solenoid
drive connector
Disconnect and reconnect the sensor connector.
The paper-feeder pickup solenoid is defective. Run the solenoid drive test in the component test (see Component tests) to verify
that the paper-feeder pickup solenoid is functioning properly. If it is not, replace
the paper pickup assembly of the specific tray.
Poor contact of paper-feeder pickup motor drive
connector.
Disconnect and reconnect the sensor connector.
The paper-feeder pickup motor is defective. Run the pickup motor drive test in the component test (see Component tests) to
verify that the paper-feeder pickup motor is functioning properly. If it is not,
replace the pickup assembly of the specific tray.
Multiple feed of media If the tray 3 pickup roller, separation roller, or feed roller is worn or deformed,
replace any defective parts.
ENWW Clear jams 507