HP Volume 23 - Manual (Page 3)

HP LaserJet 4200/4300 printer—broken fuser latch
Fuser latches have been breaking before the
end of the fuser’s life. The latches in question
are the blue grasping latches at the back of the
printer used to insert the fuser into position and
lock it in place. The latch closest to the gear or
drive side of the fuser is most commonly
discovered to be broken. Symptoms associated
with this issue are a noticeable crack on the
latch (see picture, top right) and a resulting
break that may cause a grinding noise and
paper jams.
A production countermeasure, implemented in
October of 2003, consists of a triangular tab in
the middle of each latch to help reinforce the
plastic in the stress area most susceptible to
breaking (see diagram, bottom right). The part
numbers have rolled.
Field action
Please replace fusers that exhibit cracked or
broken latches; part numbers are below:
Old part number New part number Part description
Q2425-69006 Q2425-69009 4200 110 V fusing assembly
Q2425-69007 Q2425-69010 4200 220 V fusing assembly
Q2429-67902 Q2429-67903 4200 110V maintenance kit
Q2429-69002 Q2429-69003 4200 110V exchange maintenance kit
Q2430-67902 Q2430-67903 4200 220V maintenance kit
Q2430-69002 Q2430-69003 4200 220V exchange maintenance kit
Q2431-69009 Q2431-69011 4300 110 V exchange fusing assembly
Q2431-69010 Q2431-69012 4300 220 V exchange fusing assembly
Q2436-67903 Q2436-67904 4300 110V maintenance kit
Q2436-69003 Q2436-69004 4300 110V exchange maintenance kit
Q2437-67903 Q2437-67904 4300 220V maintenance kit
Q2437-69003 Q2437-69004 4300 220V exchange maintenance kit
RM1-0013-010CN RM1-0013-040CN 4200 110 V fusing assembly
RM1-0014-010CN RM1-0014-040CN 4200 220 V fusing assembly
RM1-0101-050CN RM1-0101-070CN 4300 110 V fusing assembly
RM1-0102-050CN RM1-0102-070CN 4300 220 V fusing assembly
Cracked fuser latch
Reinforcing
triangular rib
Former, break-
susceptible latch
Current, reinforced
latch
Fuser latch countermeasure diagram
HP LaserJet 4200/4300 printer—broken fuser latch 3