Servicing
DC Power Supply Replacement
Thermo Electron Corporation Model 42i Low Source Instruction Manual 7-29
4. At the GAIN 100 screen, use to increment the D/A
counts until the FREQ value matches or is slightly above (within 50
counts) the value noted in the previous step.
5. Press
to store the value.
The screen flashes Calculating - Please Wait! and Done - Values
Saved! messages.
DC Power Supply
Replacement
Use the following procedure to replace the DC power supply (Figure 7-16).
Equipment Required:
DC power supply
Philips screwdriver
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.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
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