Data General NOVA 4/C Field Engineering Maintenance Manual page 106

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.
BROWN BLACK P3
BLUE
| — YELLOW
[I ] WHITE
" lee RED
or
POWER —
CONNECTOR REFER TO WIRING DIAGRAM NO.
CABLE CABLE 001-001637 FOR MORE INFORMATION.
P1 P2
Figure 12.21 5-slot wiring harness
5-SLOT WIRING HARNESS
REPLACEMENT
1. Go to the fan replacement procedure for the 5-slot chassis
and perform steps 1-8.
2. Remove cable P3 from the console PCB, the 4 wires
from the power switch, and the 4 wires from the fans (2
wires per fan). (See Figure 12.21 and wiring diagram No.
3. Pull these cables of the harness through the slot in the
backpanel. Remove the wiring harness cables connected
to the backpanel, P2 and PI.
4. Being very careful to follow the color scheme shown in
Figure 12.21, connect the new wiring harness to the fans (2
wires per fan), the power switch (4 wires), and the console
PCB (cable P3).
5. Pull the 2 remaining cables of the harness (Pl and P2)
through the slot in the backpanel and plug them in the
appropriate locations. (See Figure 12.21 and wiring diagram
No. 001-001637.)
6. Go to the fan replacement procedure for the 5-slot chassis
procedure and perform steps 13-18.
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