INFICON RS-3000 Power Supply Controller - Manual (Page 24)

instruments
Power Supply Controller RS-3000
Section 5 Page 5 - 1 Service
Section 5
Service
The unit is best opened by removing the 4 back panel screws then the four connector
securing hardware (capturing) standoffs. Remove back panel. Remove top by sliding it
rearward. Slide main board rearward to remove (note connection to front panel board) or
service the fuses or jumpers without removing main board. Take care not to touch
electronic devices or circuitry such that a high voltage discharge path from your finger may
develop and destroy components.
There are 2 socketed internal fuses. One for VCC (labeled F1) and the other for +12 volts
(labeled F2).
The RS-3000 power-on event sequence is as follows. The green power LED is illuminated.
Next, the unit momentarily illuminates all LEDs and display segments. Then it momentarily
displays its software version number (large display) and 300 (T3000 wired in series) or 600
(T3000 wired in parallel) in the small display. If the number displayed does not match the
actual configuration, check the wiring select switch on the T3000. If there are no error
conditions, the RS-3000 will display 0.F.F. in the large display.