Printronix P9012 Maintenance Manual page 130

Installation
CAUTION
The ribbon control PCBA must be positioned properly in the ribbon
deck housing. The PCBA sector with connectors RMJ1 and RGJ1 must
be adjacent to the right side ribbon drive motor; the sector containing
connectors RMJ2 and RGJ2 must be adjacent to the left ribbon drive
motor.
1. Position the ribbon control PCBA in the ribbon deck housing.
2. Mount the PCBA to the ribbon deck housing with the four hex screws
(17) and flat washers (18).
3. Attach connectors J30 and J33 to the ribbon deck housing.
4. Attach connectors (11) and (12) to PCBA connectors RMJ2 and RGJ2.
5. Attach connectors (7) and (8) to PCBA connectors RMJ1 and RGJ1.
6. Attach connector J45 to shunt plug P45.
7. Position the ribbon deck covers on the ribbon deck housing.
8. Install two screws (1) and washers (2).
9. Install the ribbon deck assembly as described on page 6–8.
6–12 Replacement Procedures