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Siemens MOBILETT Plus Manual
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Siemens MOBILETT Plus Manual

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MOBILETT Plus/ Plus E
Function Description
From Serial No.
Register 6
Print No.: SPR8-215.850.02.01.02
Replaces: n.a.
MOBILETT Plus; 3200
MOBILETT Plus E; 10900
© Sie mens AG 2002
The reproduction, transmission or
use of this document or its contents
is not permitted without express
written authority. Offenders will be
liable for damages. All rights,
including rights created by patent
grant or registration of a utility
model
_or_ design,_are_
reserved.
English
Doc. Gen. Date: 01.02
66 08 512

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  • Page 1 MOBILETT Plus/ Plus E Function Description From Serial No. MOBILETT Plus; 3200 MOBILETT Plus E; 10900 © Sie mens AG 2002 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages.
  • Page 2 Assemblers and other persons who are not employed by or otherwise directly affiliated with or autho- rized by Siemens or one of its affiliates are directed to contact one of the local offices of Siemens or one of its affiliates before attempting installation or service procedures.

  • Page 3: Table Of Contents

    High-voltage circuit errors ....... 15 - 4 16 ______Integration of the tube current ___________________________________ 16 - 1 Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 4 17 _____ Tube-loading calculation________________________________________17 - 1 18 _____ Error messages _______________________________________________18 - 1 19 _____ Spring Counterweight __________________________________________19 - 1 20 _____ Changes to previous version ____________________________________20 - 1 MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 4 of 4 Siemens-Elema AB Rev.

  • Page 5: Function Description Valid For

    General 1 - 1 Function Description valid for • MOBILETT Plus with serial no. > 3200 • MOBILETT Plus E with serial no. > 10900 Documents required • Service Instruction SPR8-215.898... • Maintenance Instruction SPR8-215.831... • Maintenance Protocol SPR8-215.832... Text emphasis...

  • Page 6: Safety Information And Protective Measures

    1 - 2 General Sections marked with this symbol have been included in the Siemens Training Video (part of the self-study packet), which can be ordered through Siemens customer service. This symbol indicates components sensitive to Electro-Static Discharge (ESD). Safety information and protective measures •...

  • Page 7: Protective Measures When Working On The Capacitor Bank

    CAPPOS and CAPNEG test points on the capacitor bank could be damaged. The capacitors could still be charged. In this case, proceed as follows: Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 8 Use only the specified measurement devices (350 V DC). If one of the fuses in the capacitor series has blown out, this series must be considered fully charged. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 4 of 4 Siemens-Elema AB Rev.
  • Page 9 Buttons To mains connector pg.120 pg.180 MAINS FILTER Buttons Remote control Buttons (Plus only!) Prep/exp Turnplate option (2X) pg.140 Lamp/prep/exp Single tank pg.150 Display- pg.170 pg.140/150/180 180-264V- board Mains switch 90-143V- pg.100 pg.120 kV, mA and Temp. Fuses 1 =10A Measurment 2 =15A pg.140...
  • Page 10 2 - 2 Block Diagram This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...

  • Page 11: Parts And Controls

    General Description 3 - 1 MOBILETT Plus/ Plus E are mobile radiography units, with an output of up to 30 kW. Parts and Controls Arm system Remote sensor (option) Tube assembly Control and display panel Transport handle Exposure release switch...
  • Page 12 The display with selection buttons, as well as the audiovisual signals, simplify the use of the unit for both medical and technical staff. The Instructions for Use describe the correct operation of the MOBILETTs. Fig. 2 MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 4 Siemens-Elema AB Rev.
  • Page 13 U101 80A Fig. 3 Fig. 4 Fig. 3 and Fig. 4 show the location of different components, fuses and cable connections. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 14 3 - 4 General Description This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 4 of 4 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...
  • Page 15 • X-ray tube / single tank H1 • collimator lamp in Z66 • turn-plate solenoid PM, MOBILETT Plus only Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev.
  • Page 16 NOTE Servicing and maintenance tasks on the MOBILETT is to be performed only by those who have worked through the entire self-training material provided. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev.
  • Page 17 Board D8 can adapt by itself to line voltages between 100 V AC and 240 V AC. Switching circuitry on this board furnishes a standard primary voltage at transformer T3. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 18 The voltages can be checked at the test points with a digital voltmeter or an oscilloscope. • two are used as AC control voltages for the turn plate (MOBILETT Plus only), one also serving as a control voltage for the collimator lamp in the multileaf collimator, Z66.
  • Page 19 " 45 kV and < 50 kV 325 V with a tube voltage display of " 50 kV 350 V Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 20 According to the residual voltage in the capacitor bank, this takes between 5 and 120 s. • The green ”ready” LED on the Control and display panel is turned on. The unit is ready to operate! MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev.
  • Page 21 • ”CHARGE LOW” and • ”DISCHARGE” • ”ready” is used to control the green LED on the Control and display panel. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 6 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 22 When the high-power consuming device is switched off, the charging process will be con- tinued with the signal ”CHARGE HIGH”. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 6 Siemens-Elema AB Rev.
  • Page 23 +0.8 V -0.8 V -1.2 V "Ready" Hysteresis threshold Charge with Charge with Discharge e.g. "CHARGE HIGH" "CHARGE LOW" disturbance Fig. 1 Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 6 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...

  • Page 24: Charging Circuit Errors

    • Voltage rise in capacitor bank too fast, • Voltage rise in capacitor bank too slow, or • Leakage current in capacitor bank too large. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 4 of 6 Siemens-Elema AB Rev. 01 01.02...

  • Page 25: Servicing The Charging Circuit

    Siemens-Elema AB Register 6 SPR8-215.850.02 Page 5 of 6 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 26 For this purpose the software-supported service program ” P06 Capacitor forma- tion ” is available. The Service Instructions describe how to call this service program. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 6 of 6 Siemens-Elema AB Rev.
  • Page 27 U9 and U10. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 28 8 - 2 Supervision of the power-consuming devices This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...
  • Page 29 The desired option is selected in service program P14. The same service program also serves to set the maximum possible selectable kV value in the range from 40 – 133 kV for MOBILETT Plus, and 40 – 125 kV for MOBILETT Plus E.
  • Page 30 9 - 2 Selection and display of exposure parameters This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...
  • Page 31 D1 switches off the signal ”PIVOT ON” and switches on the signal ”PIVOT HOLD”. The contact in relay MR1 then returns to its original position and the contact in relay MR2 is switched on. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 32 The magnetization current surge in the turn-plate solenoid coil following energizing the relay MR1 with the signal ”PIVOT ON” can be measured with a current probe in cable K Fig. 2 MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev.
  • Page 33 If the collimator lamp is not switched off in this way, after 30 s the microprocessor on the CPU board D1 will switch it off. The lamp is also automatically switched off after an expo- sure. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 34 11 - 2 Collimator-lamp control This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...

  • Page 35: Exposure Preparation

    ”ready” LED on the Control display panel is turned on. 1. 142 Hz if FW version lower than 1.5 or 1.5E. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...

  • Page 36: Exposure Release

    • the exposure-indicator lamp is turned off. • the rotating anode is braked. If the MOBILETT Plus is equiped withe a remote NOTICE exposure switch system, please see Installation Instruction: Installation of remote exposure switch system, chapter 3 "Supplement to the Instructions for Use".
  • Page 37 Pulse width X = approx. 6 Cs in "stand by mode" Pulse width X = approx. 20-30 Cs in "preparation or release mode" Fig. 1 Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 38 The pulse width value used in the preparation depends on the selected kV value. In the CMOS memory there are two tables with values, one contains fixed start values and the other one contains the self adapted values of the generator. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02...
  • Page 39 ±0.12 V, relative to the reference value. Tolerance range in preparation mode 0.6 V Tolerance range in holding mode 0.12 V Fig. 2 Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...

  • Page 40: Filament Circuit Faults

    Control and display panel. The error message can be acknowledged by pressing the ”kV+” selection button. If this fails to switch off the error message, proceed according to the Service Instructions! MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02...
  • Page 41 2. <142 if FW version is lower than V1.5 or V1.5E. 3. 10 s if FW version lower than V1.2 or V1.2E. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 42 • if a system fault occurs. 1. 142 Hz if FW version lower than V1.5 or 1.5E. 2. 7 s if FW version lower than V1.4 or V1.4E. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev.
  • Page 43 The secondary winding of the single tank H1 transforms these current pulses into high voltage and a voltage doubler circuit generates their final value. Fig. 1 Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 44 The signal "HTD" is also checked against its limits of ±20 kV. The maximum values of the signals "HTD" and "HT" are defined as follows: "HTD" ±20 kV "HT" 140 kV MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 4 Siemens-Elema AB Rev. 01 01.02...
  • Page 45 This signal is then fed to the microprocessor SAB 80C166 on the CPU board D1, which interprets the signal as an error message. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...

  • Page 46: High-Voltage Circuit Errors

    The error message displayed can be acknowledged by pressing the selection button ”kV +”. If the same error message appears again proceed according to the Service Instructions! MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 4 of 4 Siemens-Elema AB Rev.
  • Page 47 Simultaneously, each measured actual tube current value is compared with a minimum value of 5 mA. "MA POS" curve for a long-time exposure Fig. 2 Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 48 ”sample rate” of the oscilloscope, can distort the individual pulse forms shown in the display (aliasing effect)! See the Service Instructions for additional information! 1. 7s if FW version lower than V.1.4 or V.1.4E. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 4 Siemens-Elema AB Rev.
  • Page 49 If the problem occurs again when repeating the exposure, proceed according to the Ser- vice Instructions. 1. 7s if FW version lower than V.1.4 or V.1.4E. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 3 of 4 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 50 16 - 4 Integration of the tube current This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 4 of 4 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...
  • Page 51 X-ray tube assembly. 13 Joules represent about 52 W cooling capacity. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 52 10 to 20 min- utes so that the HU-memory can be emptied. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev.
  • Page 53 The unit is ready to operate. Details concerning the meaning and elimination of error messages are given in the Ser- vice Instructions! Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 54 The error history memory can be called up with the service program ”P08” and cleared with program ”P09”. The selection procedure and details concerning the service programs mentioned are given in the Service Instructions. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev.
  • Page 55 Risk of personal injuries. Follow the procedures exactly as described in the Maintenance Instruction or the Service instructions when performing repairs or adjustments. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 56 19 - 2 Spring Counterweight This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...
  • Page 57 Changes to previous version 20 - 1 No changes, initial publication. Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E Solna, Sweden Rev. 01 01.02 SPS-UD...
  • Page 58 20 - 2 Changes to previous version This page intentionally left blank. MOBILETT Plus/ Plus E Register 6 SPR8-215.850.02 Page 2 of 2 Siemens-Elema AB Rev. 01 01.02 SPS-UD Solna, Sweden...

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