HP PCL/PJL reference - Printer Job Language Technical Reference Manual

EN PJL Status Codes D-23
LaserJet 4000 / 5000 Series Paper Jam
Messages (44xyy)
This category contains unsolicited status error messages related to
paper jams (for the LaserJet 4000 and 5000 series printers only). The
messages are in the format 44xyy, where x is the number of sheets in
the printer, and yy is the location of the jammed sheet.
17 FIFO empty when expecting data
18 FIFO full when tray to send data
19 Invalid page ACK (formatter not expecting a page
ACK)
20 Page ACK timeout
21 Inconsistent paper size
22 Wrong page ACK
23 Device(s) never ready during installation
24 Negative ACK of ready tray
x Description
0 – 9 Number of jammed sheets
yy Jam Location
00 Paper jam in unknown location
01 Paper jam in the paper input area
02 Paper jam in the paper output area (may need to
open rear door of printer)
03 Paper jam underneath the top cover. Remove toner
cartridge to clear.
04 Paper jam in the duplexer
05 Paper jam in the duplex front cover area
06 Paper jam in the face down output area
07 Paper jam in the front door area
yy = Code Error Code