User Guide

Jams in tray 3 or tray 4
Table 7-11 Causes of tray 3 and or tray 4 jams
Cause Solution
The feed or separation rollers are dirty, worn, or damaged. Clean the rollers. If they are dirty after cleaning, or if they are
worn or damaged, replace the rollers. See
500-sheet feed
rollers or 1,500-sheet feeder feed rollers, or 1,500-sheet
feeder separation roller.
The pickup roller is worn or damaged. Replace the pickup roller.
The drive transmission gear is damaged. Check the gears, and replace any damaged or worn parts.
The tray 3 or tray 4 paper pickup drive gears are damaged,
or the assembly is defective.
Check the drive gears in the paper-pickup unit. Replace the
pickup drive assembly if the gears are damaged. See
500-
sheet feeder paper-pickup drive assembly or 1,500-sheet
feeder paper-pickup drive assembly.
The connector to the printer has poor contact. Inspect the connector to the printer. Replace any damaged
connectors.
The paper-feeder pickup solenoid is damaged. 1 Disconnect the connector for the paper-feeder solenoid
from the feeder control PCA.
2 Measure the resistance between the cable connectors.
3 If the measured resistance is not approximately
160 ohms for the HP LaserJet 4200/4300, or 110 ohms
for the HP LaserJet 4250/4350, replace the paper-
feeder pickup solenoid. See 500-sheet feeder switches,
sensors, solenoids, and PCAs or 1,500-sheet feeder
switches, sensors, solenoids, and PCAs.
The tray 3 or tray 4 lifter assembly or stack-position sensor
(PS802 or SR2) is defective.
Replace the lifter-drive assembly (500-sheet feeder) or the
lifter-drive assembly (1,500-sheet feeder). See
500-sheet
feeder lifter-drive assembly or 1,500-sheet feeder lifter-drive
assembly. Replace the surface stack sensor (PS802 for the
500-sheet feeder, or SR2 for the 1,500-sheet feeder. See
500-sheet feeder switches, sensors, solenoids, and PCAs or
1,500-sheet feeder switches, sensors, solenoids, and PCAs.
The paper-feeder control PCA is defective. Replace the paper-feeder control PCA. See 500-sheet
feeder control PCA and 1,500-sheet feeder control PCA.
The dc controller PCA is defective. Replace the dc controller PCA. See Dc controller PCA.
Paper-path troubleshooting 373