Sinclair SCV-750EB Service Manual page 81

For SCV-900EB and SCV-1800EB
E3 / E4 / E5 / E7 / Eb / Ed /EE/ EF / EP / EU
Sensor connection on main PCB is loose
Sensor has short-circuited or failed
Notes:
1. All the sensors are connected to port CN1, CN16, CN31, CN3, CN10 and CN69 on the main PCB (labeled 29, 30, 31, 32 in Part 4, 2.2.1 Main PCB component).
2. Measure sensor resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not consistent with the sensor's resistance
characteristics table, the sensor has failed. Refer to Part 4, 6.1 "Temperature Sensor Resistance Characteristics".
/ Fb / Fd
No
No
Replace main PCB
Yes
Ensure the sensor is connected properly
Yes
2 Replace the sensor
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