Dcu, Mcu, Mechanism Driver Pcbas; Dcu, Mcu, And Mechanism Driver Pcbas - Printronix P9012 Maintenance Manual

DCU, MCU, Mechanism Driver PCBAs

Removal
NOTE: The DCU, MCU, and Mechanism Driver PCBA locations are
1. Remove the right side panel as described on page 6–4.
2. Loosen two screws (1) and remove the cover (2).
3. On the DCU only, disconnect two connectors (3).
4. Lift ejection levers (4) and slide the PCBA (5) out of the card cage (6).
Installation
1. If installing a new PCBA:
a. Compare the original PCBA with the replacement. If the new board
b. If the new board is the same firmware version, remove any PROMs,
Installing a PCBA in the wrong slot will damage the PCBA and
connector.
2. Slide the PCBA into the correct slot in the card cage with the component
side on the right. Engage the ejection levers at the edge of the card cage
and close to seat the PCBA.
3. On the DCU only, connect two connectors.
4. Install the cover and tighten two screws.
5. Install the right side panel as described on page 6–4.
6–72
labeled at the top of the card cage. Removal/installation is the same
for all cards. The DCU PCBA is illustrated.
is a different firmware version, refer to the P9012 User's Manual for
configuration details.
jumpers, or terminations from the original board and install them on
the replacement board. (For PROM locations, refer to page 6–73.)
(Figure 6–24)
CAUTION
Replacement Procedures