Magnetic Pickup Assembly (Mpu); Oil Wick - Printronix

P9212 Maintenance Manual

Magnetic Pickup Assembly (MPU)

1. Unplug the printer power cord from the AC receptacle.
2. Loosen the MPU locking screw. (See Figure 5–5, page 5–13, item #2.)
3. Remove the MPU guide bracket. (See Figure 6–14, page 6–54, item #3.)
4. Disconnect the MPU cable connector P35.
5. Using your fingers, unscrew the MPU completely until it is removed
from the pickup arm.
6. Reverse the removal steps to install a new MPU. Then perform the MPU
gap adjustment (page 5–12).
7. Check and adjust the MPU phasing (page 5–14).

Oil Wick

1. Remove the flywheel assembly (page 6–9).
2. Remove the two 5/16 inch screws that secure the oil wick. (See
Figure 6–14, page 6–54, item #7.)
3. Install the new oil wick, and then reverse the flywheel removal steps
(page 6–9).
4. Complete this procedure by performing the shuttle and and
counterweight preload and spring adjustments, and the MPU gap and
phase adjustments found in chapter 5.
5. Check and adjust the shuttle and counterweight preload (page 5–28).
6. Check and adjust the MPU gap (page 5–12).
7. Check and adjust the MPU phasing (page 5–14).
6–26 Replacement Procedures and Parts