Data General NOVA 4/C Field Engineering Maintenance Manual page 41

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.
FRONT CONSOLE PCB
ASSEMBLY
INTERNAL CABLE
(WIRING HARNESS)
TROUBLESHOOTING 16-SLOT
POWER SUPPLY
generate dangerously high voltages. DO NOT ATTEMPT
TO MEASURE VOLTAGES INSIDE THEM. Before you
remove the cover on the VNR unit or the power supply
board, WAIT AT LEAST 5 MINUTES AFTER
POWERING DOWN THE SYSTEM to allow the high
voltages to dissipate. Turn off the power before removing
The load on the power supply is balanced. (You may
upset this balance if you remove or add boards while
troubleshooting. See the installation data sheets, DGC
No. 010-000213, for the load balancing rules.)
All the electrical connections between units are good.
The lock switch on the front console is in the UNLOCK
position.
If you have any reason to think that these conditions are
not met, check them before proceeding.