HP Enterprise CC490A manual 20Causes and solutions for residual media jams

Table 3-20Causes and solutions for residual media jams

Cause Solution

The sensor detecting a residual media jam is not working.

One of the four sensors is reporting a residual jam. Test each sensor using the manual sensor test. See Manual sensor test (special-mode test) on page 246 for information. If the sensor does not respond, replace the component indicated:

●TOP sensor (SR20): Replace the registration assembly. See Registration assembly on page 128.

● Fuser delivery sensor (SR5): Replace the sensor. See callout 3 in Figure 2-114 Remove the delivery assembly (2 of 7) on page 146 for the sensor

	location.
	● Loop sensor 1 or 2 (SR14 and SR15): Replace the fuser. See Fuser
	on page 85.
	● Duplex re-pickup sensor (SR22): Replace the registration assembly. See
	Registration assembly on page 128.
If service was recently performed on the	Run the manual sensor tests to verify which sensor detects the media. See
product, a sensor connector might be	Manual sensor test (special-mode test) on page 246 for information. Reconnect
disconnected.	the corresponding sensor connector:
	● TOP sensor: Connector (J74) and (J145) on the DC controller PCA
	● Fuser delivery sensor: Connector (J48) and connector (J127) on the DC
	controller PCA
	● Loop sensor 1 or 2: Connector (J162) on the DC controller PCA
	● Duplex re-pickup sensor: Intermediate connector (J74) and connector
	(J145) on the DC controller PCA.

Table 3-21Causes and solutions for pickup delay jams 2

Cause	Solution
Poor contact of the pickup motor drive	Reconnect the connector (J37) of the pickup motor and connector (J260) of the
connector.	DC controller PCA .
The pickup motor is defective.	Execute the pickup-motor driving test in the actuator-drive mode. If the motor is
	defective, replace the pickup motor. See Pickup motor on page 172.
The pickup roller is worn or deformed.	Replace the pickup roller. See Feed and separation rollers (Trays 2-5)
	on page 86.
The tray 2 separation roller is worn or	Replace the separation roller. See Feed and separation rollers (Trays 2-5)
deformed.	on page 86.
Poor contact of the TOP sensor connector.	Reconnect the intermediate connector (J74) of the TOP sensor and connector
	(J145) on the DC controller PCA.
The TOP sensor (SR20) is defective.	Run the manual sensor test to verify that the TOP sensor is functioning properly.
	See Manual sensor test (special-mode test) on page 246 for information. If it is
	not, replace the registration assembly. See Registration assembly
	on page 128.

Poor contact of the pickup solenoid drive connector.

Reconnect the connector (J59) of the pickup solenoid and (J115) on the DC controller PCA.

396 Chapter 3 Solve problems ENWW