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HP LaserJet 4200/4300 Service Manual-ENWW

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1. Note If the optional envelope feeder accessory is installed press the release button that is on the left side and remove it Then proceed to step 2 1 Remove the front accessory cover not shown See Accessory covers and the tray 2 extension door on page 143 Insert the tip of a a small flat blade screwdriver under the tray 1 separation pad Carefully twist the screwdriver to dislodge the separation pad Remove the tray 1 separation pad Figure 64 Tray 1 separation pad 140 Removing and replacing parts Q2431 90912 www GovTechMedia com Tray 2 feed rollers 1 Remove tray 2 and place it on a level work surface Locate and open the cover arrow that is next to the roller in tray 2 lt N Figure 65 Tray 2 feed rollers 1 of 4 2 Pinch the blue latch that is on the left side of the roller Slide the roller off of the shaft arrows att L Figure 66 Tray 2 feed rollers 2 of 4 CAUTION When you install the roller make sure that it locks into place Verify that the roller is correctly oriented and that the round black spacer next to the roller is correctly positioned against the locking pin on the shaft callout 1 Q2431 90912 Chapter 6 Removing and replacing parts 141 www GovTechMedia com WARNING Do not allow the front of the printer to extend beyond the edge of the work surface The printer can become unbalanced and fall which can cause damage to the printer or personal injury to the serv
2. Fuser WARNING The fuser is very hot After turning the printer power off allow the fuser to cool for at least 30 minutes before removing it 1 Remove the rear output bin See Rear output bin on page 155 2 Squeeze the blue fuser release tabs callout 1 om d 1a in pln a Figure 100 Fuser 1 of 2 3 Pull the fuser straight back and out of the printer CAUTION Do not drop or jar the fuser It can easily be damaged if it is mishandled Figure 101 Fuser 2 of 2 Hint When you replace the fuser make sure that it is fully seated into the printer You should hear both sides snap into place 162 Removing and replacing parts Q2431 90912 www GovTechMedia com Tray 1 pickup roller Note If the optional envelope feeder accessory is installed press the release button that is on the left side and remove it Then proceed to step 2 1 Remove the front accessory cover callout 1 AS d Figure 62 Tray 1 pickup roller 1 of 2 2 Release the pickup roller by sliding apart the latches that are located on each side at the top of the roller Lift the roller out of the opening Figure 63 Tray 1 pickup roller 2 of 2 Reinstall note When you install the pickup roller place the two pivot pins in the lower mounting slots callout 2 and rotate the roller into the printer until it snaps into place Q2431 90912 Chapter 6 Removing and replacing parts 139 www GovTechMedia com Tray 1 separation pad
3. ice technician 3 Move the front of the printer to the edge of the work surface for better access to the feed roller To find the rollers look up into the inside of the opening that was created when you removed tray 2 Figure 67 Tray 2 feed rollers 3 of 4 4 Pinch the blue latch on the left side of the feed roller Slide the roller off of the shaft You might need to rotate the roller in order to pinch the latch Figure 68 Tray 2 feed rollers 4 of 4 5 Repeat the previous step for the remaining white pickup roller Reinstall note When you install a roller make sure that it locks into place on the tabs that are on the drive gear callout 2 142 Removing and replacing parts Q2431 90912 www GovTechMedia com Transfer roller 1 Open the control panel door and tray 1 CAUTION Do not touch the black rubber on the roller Skin oils on the roller can cause print quality problems The use of disposable gloves is recommended when you remove the transfer roller 2 Use a flat blade screwdriver to lift the left end of the metal shaft out of place near the blue gear Slide the transfer roller to the left to remove it Figure 61 Transfer roller Reinstall note When you install the transfer roller make sure that the black collar on the left side is oriented correctly with the open end face down the solid end is face up 138 Removing and replacing parts Q2431 90912 www GovTechMedia com

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