- HP All-in-One Printer Manual

Q2431-90912 Chapter 7 Troubleshooting 303
Jams in the paper path
Note Avoid using odd-sized media. Odd-sized media might not transport properly between the transfer
roller and the fuser without getting jammed.
Avoid using short-grained paper. Short-grain paper might excessively curl and become jammed.
This type of jam is often found between the fuser and the output destination or in the duplexer.
Jams in the duplex path
Table 47. Causes of paper-path jams
Cause Solution
The cartridge shutter open/close mechanism is
damaged.
The shutter in the print cartridge should open as you
insert the print cartridge. If the shutter does not
open, replace the print cartridge.
The registration roller is dirty, worn, or damaged.
(This applies to jams that occur before the
registration rollers.)
Clean the registration roller assembly if it is dirty. If it
is dirty after cleaning, or if it is worn or damaged,
replace the registration assembly. See “Registration
assembly” on page 198.
The paper-feed assembly (including clutch CL101)
might be damaged. (This applies to jams that occur
before the registration rollers.)
Replace the paper feed assembly. See “Paper feed
assembly” on page 195.
The drive gears are damaged.
(This can cause jams that occur before media
reaches the registration rollers.)
Check the drive gears in the paper pickup and main
drive assemblies. Replace the pickup or main drive
assemblies if the gears are damaged. See
“Paper-pickup assembly,” on page 183 and/or “Main
drive assembly” on page 186.
The pre-feed (PS102), top-of-page (PS103), or
fuser assembly (PS108) sensor(s) is defective.
Replace the sensor. See “Location of 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.
Table 48. Causes of duplex path jams
Cause Solution
The oblique rollers are worn or damaged. Replace the duplexer.
The oblique roller drive gears are worn or damaged. Replace the duplexer.
The duplex feed guide is damaged. Replace the duplexer.
The duplex sensors are defective. Replace the duplexer.