HP LaserJet 4 Service Manual - Page 222
Replacing the High Voltage Contact, Assembly/Feed Guide Assembly
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Replacing the High Voltage Contact Assembly/Feed Guide Assembly The Toner Cartridge Guide Plate and the High Voltage Contact Assembly/Feed Guide Assembly must be installed together. Allow plenty of time to perform this procedure because several iterations of the process may be necessary. 1 Set the contact assembly over its mounting holes. 2 Slide the Toner Cartridge Guide Plate into position on a diagonal line (see Figure 6-57). 3 Working the two parts together, lift the rear of the HVCP to provide enough clearance to install the Guide Plate. 4 When the Guide Plate is in position, press it into place on the sheet metal. 5 Press the HVCP into its mounting slots. 6 Install the Laser Shutter Pivot Pin and test the Laser Shutter for free operation. 7 Replace the gear cover (see Figure 6-56). Figure 6-57 Orientation of HVCP and Left Guide Plate 6-68 Removal and Replacement