4700 Refrigerated Sampler Service Guide
Section 4 CPU and Power Supply
4-17
4.5.3 Power Supply Removal
The power supply is replaced as a whole unit, complete with
attached cables. To access the power supply, first remove the
refrigerator’s cover brace, back cover, insulation, and refriger-
ation module, as described in Section 1.8
Accessing the Rear
Components
.
WARNING
Removing the refrigeration module exposes you to
electrical and mechanical hazards. Always disconnect from
AC power before accessing the power supply. Only trained
service personnel may access these areas.
WARNING
Risk of injury or equipment damage. Familiarize yourself
with the general instructions on pages 1-14 and 1-13 before
proceeding.
Tools
1" open-end wrench, #1 and #2 Phillips screwdrivers, heat gun,
RTV sealant
1. Remove the power cord that runs through the refrigeration
assembly. Refer to Figure 4-7.
a.
230V/50 Hz Systems Only
— Remove the AC Plug
adapter from the end of the power cord by first cutting
away the plastic heat shrink tubing. Then pull the
adapter off, leaving just the North American 120V plug.
Figure 4-6
Removing 230V adaptor from AC power cord
b. All Systems — Slide the bushing sideways away from
the refrigeration module until it is free. Use care to
avoid bending the refrigeration tubing.
c. All Systems — Pull the power cord through the module.
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