ELTRA CS-800 - General Test Points

Service
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5.3 54BGeneral test points
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Fig. 35: Mainboard (Cut-out) IR-cell – general test points)
5.3.1
114BSupply voltages and thermostatic control circuit
TP 1: GND
TP 7: IR source voltage
TP 12: + 5V supply
TP 13: Heating transistors control voltage
TP 26: IR temperature actual value
TP 27: +24V supply
TP 28: IR temperature set point
5.3.2
115BSupply voltages for IR signal processing circuit
TP 6: +12V