High-voltage power supply
To remove the high-voltage power supply (HVPS)
NoteTurn the printer off, wait five seconds, and then unplug the printer.
Two versions of the HP Color LaserJet 4500 series printers are available; the newer version is
equivalent to the HP Color LaserJet 4550 unless otherwise noted. To identify which printer version
you are servicing, see page 140.
1 Remove the formatter pan assembly.
2 Remove the power supply.
NoteSome printers have a cover over the high-voltage power supply.
3 Remove the rear door.
4 Remove the fusing assembly.
5 Disconnect the four cables from their connectors (callout 1, Figure 6-32 or callout 1,
Figure 6-33, depending on the version of printer being serviced).
6 Free the cable harness from the cable stays.
7 Remove the four brass screws shown in callout 2, Figure 6-32 from the HVPS.
8 Carefully pull the HVPS out. Ensure that the rear plastic retaining strap attached to the HVPS
clears the chassis and its remaining components.
High-voltage power supply replacement tip
When reinstalling the HVPS, carefully insert the plastic retaining strap attached to the rear of the
HVPS through the chassis.
21
Figure 6-32High-voltage power supply removal and replacement (newer version HP Color LaserJet 4500
and HP Color LaserJet 4550 printers)
174 Removal and replacementC7085-90921 |
ACEC
