HP M750 series

Table 3-49 Causes and solutions for residual media jams
Cause Solution
Poor contact of the fuser loop-sensor connector
and fuser loop sensor 1 and 2.
Reconnect the connectors of the fuser loop sensor 1 and 2 (J13) and the connector
(J131) on the DC controller PCA.
The loop sensor is defective. Run the manual sensor test. See Fuser loop sensors (PS7 and PS8) for information.
If the sensor is defective, replace fuser. See Tray/Bin manual sensor test.
The spring of the fuser-output-sensor lever is
unhooked.
Check the spring of the fuser and right door and place it in the correct position.
The fuser-output sensor lever is damaged. Replace the sensor (PS6).
Poor contact of the fuser-output sensor
connector.
Reconnect connector (J1055) of the fuser-output sensor and connector (J131) on
the DC controller PCA.
The fuser-output sensor is defective. Run the manual sensor test to make sure the fuser-delivery sensor is functioning
properly. See Fuser output sensor (PS6) for information. If the sensor is defective,
replace the fuser.
The duplex pickup sensor lever is damaged. Replace the right door assembly.
NOTE: Even if jammed paper is visible in Tray 1, clear the jam from the inside of the product by opening the
right door.
Jams in Tray 1, Tray 2 and internal paper path
Table 3-50 Causes and solutions for pickup delay jam 1: tray pickup
Cause Solution
The tray 1 pick up roller or the tray 1 separation
pad is worn or deformed.
Replace the tray 1 pickup roller and separation pad.
Poor contact of the tray 1 media-presence-
sensor connector
Reconnect the connectors of the tray media-feed sensor intermediate connectors
(J531L and J531D), and the connector (J152) on the DC controller.
Poor contact of the TOP sensor connector. Reconnect the intermediate connector (J554L and J554D) of the TOP sensor and
connector (J122) on the DC controller PCA.
The TOP sensor is defective. Run the manual sensor test to verify that the TOP sensor is functioning properly. If
not, replace the registration assembly.
Poor contact of the MP-pickup-solenoid drive
connector
Reconnect the connector of the tray pickup solenoid intermediate connectors
(J530L and J530D), and the connector (J152) on the DC controller PCA.
The MP-pickup solenoid is defective. Execute the tray-pickup-solenoid driving test in the component test (see
Component tests). If the solenoid is defective, replace the right door assembly.
Poor contact of the pickup-motor drive
connector (M5)
Reconnect the pickup-motor connector (J523) and connector (J260), intermediate
connectors (J535L and J535D), and the connector (J1003) on the DC controller PCA.
The pickup motor is defective. Execute the pickup-motor driving test in the component test (see Component
tests). If the motor is defective, replace the paper pickup assembly.
ENWW Clear jams 505