HP Pro 4300 C9H70UT C9H70UT#ABA manual Jams in tray, Causes of tray 1 jams Solution

Jams in tray 1

Table 44. Causes of tray 1 jams

Cause	Solution
The pickup roller is dirty, worn, or damaged.	Clean the pickup roller. If it is dirty after cleaning, or
	if it is worn or damaged, replace the pickup roller.
The separation pad is dirty, worn, or damaged.	Clean the separation pad. If it is dirty after cleaning,
	or if it is worn or damaged, replace the separation
	pad.
The drive gears are damaged.	Check the drive gears in the tray 1 pickup assembly.
	Replace the pickup assembly if the gears are
	damaged.
The tray 1 pickup solenoid (SL102) is defective.	1. Disconnect the connector for the tray 1 pickup
	solenoid from the DC controller PCA
	(location J79).
	2. Measure the resistance between the cable
	connectors.
	3. If the measured resistance is not approximately
	160 ohms, replace the tray 1 pickup solenoid.
The tray 1 pickup assembly is defective.	Replace the tray 1 paper-pickup assembly. See
	“Tray 1 paper-pickup assembly” on page 192.
The DC controller PCA is defective.	Replace the DC controller PCA. See
	“DC controller PCA” on page 181.

Jams in tray 2

Table 45. Causes of tray 2 jams

Cause	Solution
The feed or separation rollers are dirty, worn, or	Clean the rollers. If they are dirty after cleaning, or if
damaged.	they are worn or damaged, replace the rollers.
The pickup roller is worn or damaged.	Replace the pickup roller.
The tray 2 paper pickup assembly drive gears are	Check the drive gears in the paper pickup drive
damaged or the assembly is defective.	assembly. Replace the pickup drive assembly if the
	gears are damaged. See “Paper-pickup assembly,”
	on page 183.
The tray 2 pickup solenoid (SL101) is damaged.	1. Disconnect the connector for the tray pickup
	solenoid from the DC controller PCA
	(location J92).
	2. Measure the resistance between the cable
	connectors.
	3. If the measured resistance is not approximately
	160 ohms, replace the tray 2 pickup solenoid.
The tray 2 lifter-drive assembly or the stack position	Replace the lifter-drive assembly. See “Tray 2 lifter-
sensor (PS107) is defective.	drive assembly” on page 179 and/or “Printer
	switches and sensors” on page 336
The DC controller PCA is defective.	Replace the DC controller PCA. See
	“DC controller PCA” on page 181.

Q2431-90912 Chapter 7 Troubleshooting 301