34
Measure the power supply to the scaler pin 1-2. Reading should be aprox. 30 Vdc.
If all measurements were as above, the control circuit board is functioning properly and giving the
correct control signals to the scaler electronics unit. But the scaler electronic unit is probably
malfunctioning and must be replaced, see Section 4.
3.4 Replacing the scaler electronics unit
First remove cover and casing,
On the new scaler electronics unit, double check the socket jumper configuration and that the circuit
board wire jumper is cut. See pictures above.