RADIOMETER ABL 77 Series Service Manual page 126

Chapter 4: Test and Calibration Procedures
Heater Circuit,
Verify the
Step
heater circuit
(continued)
4-38
Continued
5. • If the Th reading is within the target range, the heater circuit is
functioning properly.
• If the Th reading is outside the target range, the sensor cassette may
be defective. Replace the sensor cassette and repeat step 4 and 5.
6. If after replacing the sensor cassette the Th reading is outside the
target range, replace the analog board.
ABL77 Service Manual
Action
Rev. F