Selco Genesis 90, Repair Manual

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Unless specified otherwise, all the measurements must be taken with the boards fitted, together with their connections!
28 Description, testing and replacement of the electronic boards, current calibration
10.1) Input filter PC board 15.14.269
This board performs the following functions:
- EMC input filter
- power input rectifier
- power source voltages supervision
- isolated auxiliary power sources for the various machine circuits (see table on following page)
- fan and gas solenoid valve power supply
- the signals for the Hall probe and torch button pass through this board.
The weld switching points on the board are factory-set and must not be modified by the user.
WARNING! Soldered jumpers (factory setted):
- PZ_PE, PZ_PE1, PZ_PE2, PZ_PE3 must be always earthed! K1 = CLOSED
- PZ_PE3 brass jumpers must be always closed! K2 = CLOSED
K3 = CLOSED
K4 = CLOSED
Power diode module (PR1 & PR2) replacing instructions:
- MOUNTING: use torque screw driver @ 3 Nxm (26 lbxin)
- use thermal grease as necessary.