Replacing boards / replacing components 6 - 11Siemens AG SPR2-230.061.01 Page 11 of 48 SIREMOBIL Iso-CMedical Solutions Rev. 13 12.04 CS PS 24 System Manual• Remove the old set of collimator labels near the SIREPHOS and attach the new labelsincluded in the same position.Check that the original collimator labels are the same as the new ones.• If the "MODULARIS" system is present, perform the isocenter check.SIREPHOS 6• Remove the laser targeting device, if present.• Remove the dose measurement chamber, if present.• Remove the collimator.• Disconnect the SIREPHOS plug.• Remove the ground screw for the protective conductor.• Remove the rubber stop of the C-arm on the SIREPHOS side. The screws that securethe SIREPHOS are now visible.• Remove the SIREPHOS screws. When doing this, have a second person hold the X-raytube unit.• Place the new X-ray tube unit on the guide bolts and secure it with both Allen screws.• Ensure that all cables are routed properly.• Reconnect the SIREPHOS plug and secure it.• Reconnect the protective conductor using the ground screw.• Do not install the rubber stop yet.• Reinstall the collimator and connect it.• Reinstall the dose measurement chamber / laser targeting device and connect them.• Perform the kV offset adjustment.• Perform the generator adjustment (filament circuit learning program).• Ensure that the collimator is functioning properly and is set correctly.• Ensure that the collimator blades are centered in the blanking circle.- If possible, slightly loosen the SIREPHOS screws and tilt the SIREPHOS to adjust it.- Retighten the SIREPHOS screws.• Ensure that the collimator blades of the iris diaphragm are visible during fluoroscopy inthe survey format and zoom format on at least 2 sides of the monitor image.Risk of injuries on mechanical parts!If not observed, slight to medium injuries, especially to the hands,can occur.Observe the notes concerning the C-arm carbon fiber structure.X-ray radiation!See Chapter 1, Safety Information.Use radiation protection! Wear a lead apron.WARNINGWARNING