Servicing
Thermistor Replacement
Thermo Fisher Scientific
Model 15
i
Instruction Manual
7-33
4.
Press
to scroll to Calibrate Full-scale, and press
.
The screen displays the input voltage for the selected channel.
5.
Use
and
to enter the source voltage, and press
to calibrate the input voltage for the selected channel connected
to the source voltage.
6.
Press
>
to return to the input channels display and repeat
Steps 3-5 to calibrate other input channels to the source voltage as
necessary.
Use the following procedure to replace the ambient temperature thermistor
(
Figure 7–15
).
Equipment Required:
Thermistor assembly
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.
▲
1.
Turn the instrument OFF, unplug the power cord, and remove the
cover.
2.
Squeeze the thermistor latch and pull the thermistor assembly from the
AMB TEMP connector on the measurement interface board.
3.
Snap the new thermistor assembly into the AMB TEMP connector.
Thermistor
Replacement