HP 4550 Service Manual - Page 175
Power supply, To remove the power supply
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Note Power supply To remove the power supply Turn the printer off, wait five seconds, and then unplug the printer. Two versions of the HP Color LaserJet 4500 series printers are available; the later 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 Disconnect the four connectors (three in front and one in top rear of printer) from the power supply. 3 Free the cable harness from the cable stay. 4 Remove the four or seven screws (depending on the version of printer you are working on) from the power supply shown in Figure 6-31. 5 Slide the power supply forward slightly to clear the rear retaining tab and tilt the top of the assembly out. Lift the power supply up and out. Figure 6-31 Power supply removal and replacement C7085-90921 Chapter 6 Removal and replacement 173