Hammer Bank Assembly - Printronix P9012 Maintenance Manual

9. Open the left tractor (5) and clean the paper motion detector (10) with a
soft brush.
10. Clean the ribbon path (11) with a soft brush.
11. Inspect the platen (12). If necessary, wipe with a cloth dampened with
alcohol to remove ink or dirt.
12. Vacuum dust or residue that has accumulated inside the lower cabinet.
13. Wipe the lower cabinet interior with a clean, lint–free cloth dampened
with water and mild detergent or window cleaning solution.

Hammer Bank Assembly

1. Remove the power cord from the rear of the printer and open the top
cover.
2. Raise the forms thickness adjustment lever (1) to fully open. Remove
any paper present.
3. Squeeze the lock tabs (2) and remove the ribbon spools (3) from the
ribbon hubs (4). Slide the right tractor (5) fully to the right.
4. Remove the ribbon deck (6) as described on page 6–8 of Chapter 6,
Replacement Procedures. This will provide access to the hammer
bank (7).
5. Push the top edge of the ribbon mask (8) on the hammer bank cover
assembly (9) toward the platen (10) and hold.
Exercise care when handling the ribbon mask; damage can affect print
quality.
6. Use a stiff, nonmetallic bristle brush to remove ribbon lint and paper dust
from the hammer springs (11) and tips (12) and from the ribbon mask,
especially in the ribbon path. Vacuum loosened particles. Remove
stubborn accumulations using a cloth or Kimwipe moistened (not wet)
with isopropyl alcohol.
7. Return the ribbon mask to the operating position.
3–6
(Figure 3–2)
CAUTION
Scheduled Maintenance