HP Pro 4300 C9H70UT C9H70UT#ABA manual Cooling fan HP LaserJet 4300 series only 3

4.Unplug the fan connector from the DC controller PCA (location J78; callout 3) and unweave it from the harness guide (callout 4).

Hint	It might be necessary to unplug various connectors or release some wire-harness retainer clips
	to provide enough slack in the wire-harnesses to unweave them easily from the harness guide.

3

4

Figure 114. Cooling fan (HP LaserJet 4300 series only; 3 of 5)

5.Use a screwdriver to push against the fan through the fan duct, from inside the printer. Release the two retaining tabs (callout 5) and push the fan out of the duct bracket.

5

Figure 115. Cooling fan (HP LaserJet 4300 series only; 4 of 5)

Reinstall note When you install the fan, the air must flow into the printer. Verify that the airflow arrows that are embossed on the fan body point into the printer. Verify that each harness connector on the DC controller PCA is fully seated. These connectors can become partially unplugged when the harnesses are unwoven from the guide on the fan duct.

Q2431-90912 Chapter 6 Removing and replacing parts 171