HP LaserJet 4250 Service Manual - Page 265
Removing the fan and the air duct together,
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Removing the fan and the air duct together 1 Remove the following assemblies: ● Rear accessory cover. See Accessory covers and the tray 2 extension door. ● Top cover. See Top cover. ● Right-side cover. See Right-side cover. ● Formatter cover. See Formatter cover 2 Gently pry back the two retaining tabs (callout 1) and slip the anti-static bar (callout 2) off of them. Rotate the anti-static bar away from the printer remove it from the printer. 3 Unplug the fan cable from location J78 on the dc controller PCA, and also unplug cables from locations J71, J72, J79, J87, J88, J89, and J91 on the dc controller PCA. 4 Unweave all of the cables from the cable guide (callout 3). Hint You might have to unplug connectors or release some wire-harness retainer clips to provide enough slack in the wire-harnesses to unweave them easily from the harness guide. 5 Remove two screws (callout 4). 4 1 2 3 Figure 6-73 Cooling fan and air duct (HP LaserJet 4250/4300/4350 series only; 1 of 2) Motors and fans 251
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