Teledyne 4700 Serivce Manual page 102

4700 Refrigerated Sampler Service Guide
Section 4 CPU and Power Supply
4700 rear wall
Figure 4-11 CPU CBA power cable and bulkhead connector
Fan power
cable
Figure 4-12 Fan mounting screws and power cable
4-20
5. Gently loosen the bulkhead fitting with a 1" open wrench
and unscrew it from the refrigerator cabinet. Pull the con-
trol panel power cable out through the threaded opening.
CPU CBA
connectors
6. From the front interior of the refrigerator, remove the two
Phillips screws holding the fan in place and remove the
fan's power cable by disconnecting the red (+) and black (-)
wires.
7. Remove the two large Phillips screws from the power sup-
ply back plate and remove the power supply.
Cord grip
Bulkhead
fitting
Enlarged view of fan
power terminals
fitting