HP 4550 Service Manual - Page 159
Laser/scanner assembly, To remove the laser/scanner assembly
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Note Laser/scanner assembly To remove the laser/scanner assembly Turn the printer off, wait five seconds, and then unplug the printer. 1 Remove the top cover. 2 Remove the left side cover. 3 Remove the RFI shield. 4 Disconnect the cable from the laser/scanner to the DC controller (J1006 on the DC controller). See callout 1, Figure 7-37 on page 317. 5 Free the cable harness from the two cable stays shown below in callout 1. 6 Disconnect the flat ribbon cable and the other cable from the laser/scanner PCB. 7 Remove the four long brass screws shown in callout 2. 8 Tilt the narrow end of the laser/scanner assembly up, pull it toward you, and lift slightly to remove it. 2 1 Figure 6-14 Laser/scanner assembly removal and replacement C7085-90921 Chapter 6 Removal and replacement 157