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Servicing
DC Power Supply Replacement
DC Power
Replacement
7-20
Model 43i Trace Level-Enhanced Instruction Manual
Use the following procedure to replace the DC power supply (Figure 7–
11).
Supply
Equipment Required:
DC power supply
Philips screwdriver
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Disconnect all the power supply electrical connections. Note connector
locations to facilitate re-connection.
3. Loosen the captive screw securing the power supply to the chassis plate
and lift out the power supply.
4. To install the DC power supply, follow the previous steps in reverse.
Figure 7–11. Replacing the DC Power Supply
Power Supply
Captive Screw
▲
Retaining Screws (4)
BOTTOM VIEW
Thermo Fisher Scientific
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