HP 5m C3917A, C2021A, 5n C3952A, 5 C3916A, 4 plus C2037A manual DC Controller Installation, U t i o n

DC Controller Installation

C a u t i o n	When reinstalling the DC Controller PCA it is
	extremely important that all cables be properly
	routed. If cables are not routed properly, it is
	difficult to reinstall the Formatter Cage and cable
	damage may result.

When replacing the DC Controller, be sure to set the leading edge adjustment as shown in the following procedure.

N o t e	The Leading Edge Adjustment is set at the
	factory and is not required as a maintenance
	procedure. The Leading Edge Adjustment should
	be done only when the DC Controller is replaced.

The following procedure is performed with the Formatter Assembly removed.

To set the Leading Edge Registration:

1 Install the new DC Controller in the reverse order of the removal.

2 Run a test print to check the leading edge adjustment (as shown in Figure 6-28.

3 Use VR202 (LaserJet 4) or VR201 (LaserJet 4 Plus and 5) (see Figure 6-29) to adjust the leading edge registration to the dimension shown in Figure 6-28 (a=2mm).

4 Make several test prints (15 ENGINE TEST as shown in Figures 3-5 and 3-6) and check the adjustment. Repeat the above steps until the adjustment is correct.

6-35 Removal and Replacement