140 Removal and replacement C7085-90921
Determining the printer version
Two versions of the HP Color LaserJet 4500 series printers are available. To accurately perform
removal and replacement procedures or determine the correct part for reordering, you will need to
know the version of the printer that is being serviced. To identify the printer, check the serial
number located at the rear of the printer. All printers will have US or JP in the first two positions of
the serial number (e.g., USBB123456). Newer versions of the HP Color LaserJet 4500 printers will
have an “H” or higher letter in the third position (e.g., USHB123456). If the letter in the third position
in the serial number is B, C, D, or F, then you have an older version. The HP Color Laserjet 4550
printer is equivalent to the newer version of the HP Color LaserJet 4500 printer, unless otherwise
specified.
Required tools
The following tools are needed to service the printer:
Phillips #2 magnetized screwdriver (152-mm [6-inch] shaft)
Small flat-blade screwdriver
Small needle-nose pliers
ESD strap
Penlight (optional)
All components in the HP Color LaserJet 4500 printer and the HP Color LaserJet 4550 printer use
Phillips-head screws that require a #2 Phillips screwdriver. Ensure that you have a Phillips
screwdriver and not a Posidriv screwdriver. Figure 6-1 (below) shows the difference between a
Phillips and a Posidriv screwdriver. Note that the Phillips tip has more beveled surfaces.
Figure 6-1 Phillips and Posidriv screwdriver comparison
PosidrivPhillips
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