Siemens MOBILETT Plus Service Instructions Manual

Also see for 3200 Series: Operator Interface Guide Manual

4 - 1Siemens-Elema AB SPR8-215.898.02 Page 1 of 2 MOBILETT Plus/ Plus ESolna, Sweden Rev. 01 01.02 SPS-UDTroubleshooting instructions 4A • Look for a small red light to the right at the kV display. The light indicates that theprogram is in the start-up phase.• If there is neither a small red light nor text on the display, it indicates that thevoltage supply is missing. Check the mains connection and the main fuses, seewiring diagram, page 20, K6.• Test the voltage supply to the CPU board and the display board, see wiringdiagram X037E, page 110, and 120.• Check that all connectors on D8, D1 and D3 are connected.• Check that the Reset LED on D1 is not lit; refer to the circuit diagram on page 110,V33. If it lights continuously, there is an error on board D1.• Check the voltage supply on D1 and D3. Refer to wiring diagram, page 110 and120.B • Check button functions. Refer to the wiring diagram, page 120 and 180.C • Press the collimator lamp button and listen for a "click" from LR1, refer to thewiring diagram, page 180.• If no "click" is heard, check the voltage supply on D4.• Check the measuring point "LAMPON". If there is no signal, check k5, k9, k3 andk2.• If a "click " is heard, check the voltage supply in the lamp bracket, refer to thewiring diagram, page 180.MOBILETT Plus onlyD • Press the turn plate button and check if a "click" is heard from MR1 and MR2,refer to the wiring diagram , page 170. If a "click" is heard, check the voltage inK68:1-2 and compare it with the references given in the wiring diagram. Checkthe resistance in the turn-plate magnet as well, refer to the wiring diagram, page170.If no "click" is heard, check the voltage supply on D4 and measuring points"PIVOTON" and "PIVOTHOLD". If there are no signals check k1, k5 and thebuttons.E • After exposures with high mAs values, there is a delay for the ready light indicatoruntil it lights again. The delay is to distribute the temperature in the anode targetsufficiently and to allow time for the capacitor bank to charge.During start-up, it can take up to 90 s before the ready light indicator lights. A mes-sage will be displayed if the ready light indicator does not light.If the MOBILETT Plus is equipped with a remoteexposure switch system, please see InstallationInstruction: Installation of remote exposure switchsystem.NOTE