Magnetic Pickup Gap - Printronix P9012 Maintenance Manual

Magnetic Pickup Gap

NOTE: Unless otherwise directed, the MPU gap adjustment should be
1. Remove the right side panel as described on page 6–4 of Chapter 6,
Replacement Procedures.
2. Refer to Figure 6–11 on page 6–37 and check to see that the flywheel
axle is against the rear roll pin.
3. Loosen the two captive screws and remove the cam cover (1).
4. Loosen the clamping screw (2) to allow the MPU (3) to be rotated.
5. Set the gap between the MPU and the flywheel (4) using a flat feeler
gauge (5), as follows:
a. If a blue mark is on the flywheel, use a 0.002 inch feeler gauge and
b. If the flywheel does not have a blue mark, use a 0.008 inch feeler
6. Tighten the clamping screw (2). Verify that the MPU does not rotate.
5–20
(Figure 5–8)
followed immediately by the MPU phasing adjustment (page 5–22).
set the gap in line with the blue mark.
gauge.
Alignments and Adjustments