Data General NOVA 4/S Manual page 150

Data General Corporation (DGC) has prepared this manual for use by DGC personnel and customers as a guide to the proper installation, operation, and
maintenance of DGC equipment and software. The drawings and specifications contained herein are the property of DGC and shall neither be reproduced in whole or
in part without DGC's prior written approval nor be implied to grant any license to make, use, or sell equipment manufactured in accordance herewith.
BACKPANEL REPLACEMENT FOR 7. Slide the chassis out from the front of the cabinet.
The slides will support it until it is about half
5-SLOT CHASSIS way out of the cabinet.
1. Power down the system, open the rear cabinet
door, and unplug the AC source. CAUTION The chassis weighs about 50 Ibs
9. Remove the front panel (see p. 118). (about 23 kgs) fully loaded. You may need help.
3. Open the rear cabinet door and remove the power 8. Place the chassis on a secure table.
cord connector and the wiring harness cable P1.
9. R the t ; th
4. Remove all PC boards in the chassis (see emove ie SOP cover, unere are 9 screws on the
top and 3 screws on the left (fan) side.
replacement procedures for power supply board,
memory, CPU, and other PC boards, pp. 127, 126, 10. Lift the top cover up and over to the left so that
and 124). it lies on its side.
5. Remove all connectors, terminators, and 11. Remove the screw that holds the backpanel to the
paddleboard connections from the backpanel. Note base of the chassis.
their location so you can reconnect them on the 12. Remove the 4 screws that secure the backpanel to
new backpanel. the back of the chassis.
6. Remove the 8 screws which secure the chassis to
the cabinet rails. There are 2 screws per rail.
POWER CORD 9 SCREWS
3 SCREWS ON SIDE
DG-06088
Figure 14.24. REMOVING CABLES FROM BACK OF 5-SLOT CABINET