Counterweight Assembly - Printronix P9012 Maintenance Manual

Counterweight Assembly

Removal
1. Disconnect the AC power cord from the rear of the printer. Open the top
cover.
2. Remove the right side panel as described on page 6–4.
3. Loosen two captive screws (1) and remove the cam cover (2).
4. Remove six screws (3), the cam front cover plate (4) and the gasket (5).
5. Loosen one screw (11) about three turns, but DO NOT remove it at this
time.
6. Using a hex–tipped screwdriver, push on screw (11) to relieve the spring
force on the shim(s) (10). Remove the shim(s) to eliminate the
counterweight preload.
7. Remove one screw (11), lockwasher (9), and washer (12).
8. Remove three screws (6), lockwashers (7), and washers (8).
9. Move the counterweight (13) away from the cam (14); slide it forward
past the cam. The spring (15) and spring seats (16) will come free.
6–32
(Figure 6–10)
Replacement Procedures