HP Pro 4300 C9H70UT C9H70UT#ABA manual DC controller PCA 1

DC controller PCA

1.Remove the following assemblies:

CAUTION

CAUTION

●Top and right-side covers. See “Top cover” on page 146 and “Right-side cover” on page 149.

●Formatter assembly. See “Formatter assembly” on page 161.

The product contains components that are sensitive to electrostatic discharge (ESD). Always perform service work at an ESD-protected workstation. If an ESD-protected workstation is not available, discharge body static by grasping the printer chassis before touching an ESD-sensitive component. Ground the printer chassis before servicing the product.

The yellow and blue heavy-gauge wires connected to DC controller PCA locations TB85 and TB86 (callout 3) are not terminal lug connectors. These terminals are soldered to the DC controller PCA. Do not attempt to forcibly unplug these connectors.

2.Unplug all of the wire/cable connectors from the DC controller PCA (callout 1). Remove two screws (callout 2).

1

3

2

Figure 128. DC controller PCA (1 of 3)

Q2431-90912 Chapter 6 Removing and replacing parts 181