Siemens MAMMOMAT Balance Troubleshooting Manual
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Siemens MAMMOMAT Balance Troubleshooting Manual

Siemens MAMMOMAT Balance Troubleshooting Manual

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MAMMOMAT Balance
Troubleshooting Guide
Service Instructions (incl)
Print No.: SPB7-115.840.01.02.02
Replaces: SPB7-115.840.01.01.02
X
SP
© Siemens AG 2004
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
including rights created by patent
grant or registration of a utility model
or_
design,
_are_
reserved.
English
Doc. Gen. Date: 10.04
rights,

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Summary of Contents for Siemens MAMMOMAT Balance

  • Page 1 MAMMOMAT Balance Troubleshooting Guide Service Instructions (incl) © Siemens AG 2004 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable damages. rights, including rights created by patent...
  • 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

    YSTEM CONFIGURATION FOR CALIBRATION ........................... 42 ADIATION TABLE ........................45 OSEMETER CONFIGURATION ........................... 47 OSEMETER DATA ..................... 50 OMMUNICATIONS WITH M AMMO UNIT ..............................51 PTIONS MAMMOMAT Balance SPB7-115.840.01 Page 3 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...
  • Page 4 DISASSEMBLY OF ORIGINAL TUBE X-RAY B ........................54 EAM COLLIMATION ........................56 IGHT EAM ALIGNMENT GAS SPRING REPLACEMENT.......................58 MAMMOMAT BALANCE / EASY LABEL COMMUNICATION PROTOCOL ........60 CHANGES TO PREVIOUS VERSION.....................62 MAMMOMAT Balance SPB7-115.840.01 Page 4 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...

  • Page 5: List Of Fuses

    6 x 30 CT 10A 6 x 30 CT 4A 5 x 20 CT 40mA INVERTER PCB 94-132 5 x 20 CT 1A BUSSMANN B1000 20FC 660V MAMMOMAT Balance SPB7-115.840.01 Page 5 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 6: Dip Switches

    Exposure start on left to right grid movement DIP5 = OFF Future expansion PCB 92-083 Keyboard Language DIP1 DIP2 DIP3 DIP4 Italian French English German Spanish Polish Turkish Portuguese MAMMOMAT Balance SPB7-115.840.01 Page 6 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 7: Control Leds

    CPU Reset sequence At power ON, LED DU6 and LED DU8 are bright, LED DU8 goes OFF, LED DU6 goes OFF, LED D1becomes bright fix and after blinks to indicate that CPU is running. MAMMOMAT Balance SPB7-115.840.01 Page 7 of 62...
  • Page 8 Brightness is directly proportional to anode YELLOW current Inverter control board 94-132 Color Function +15Vdc GREEN YELLOW bright or blinking during exposure depending on continuous or pulsed mode MAMMOMAT Balance SPB7-115.840.01 Page 8 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 9: Subassemblies And Pcb Replacement

    08883527 PCB/92-073-X Filament power supply 08883535 PCB/92-074-X Anode starter 08883543 PCB/92-083-X Keyboard 08883550 PHTM9000 AEC Detector Note (1) kV check and eventual adjustment is necessary. MAMMOMAT Balance SPB7-115.840.01 Page 9 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 10: Collimator Lamp Replacement

    1) Remove attachment of Face shield protection by means of four fixing screws 2) Open collimator assembly by removing the four fixing screws 3) replace lamp only with original spare part having the same filament orientation. MAMMOMAT Balance SPB7-115.840.01 Page 10 of 62...

  • Page 11: Switch On Circuit And Sequence

    Grid home position is at left side from patient position. Emergency shutdown Emergency push buttons located on both sides of MAMMOMAT Balance. Operating Emergency push button will switch OFF immediately main contactor TLR1 and the whole unit is switched OFF.

  • Page 12: Grid Movement Test

    When Grid movement is activated by main CPU, DL8 of PCB 03-188 becomes bright fix and .LED2 PCB 01-170 blinks following x-ray interruption at grid direction change. Grid home position is at left side from patient position. MAMMOMAT Balance SPB7-115.840.01 Page 12 of 62...

  • Page 13: Troubleshooting

    For Gas Spring replacement refer to “Gas spring replacement” section in this document For safety reasons unit can’t be operate d if Gas Spring is defective. WARNING Alarm can’t be cleared MAMMOMAT Balance SPB7-115.840.01 Page 13 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 14 Close door or check door contact and / or wiring to PCB 03-186. Note Alarm goes OFF by itself if normal condition is restored closing the door. Exposure is not interrupted if door is open after that exposure sequence started. MAMMOMAT Balance SPB7-115.840.01 Page 14 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 15 Position sensing switch is not closed Action Select manual mode, select filters several time to investigate if it’s mechanical or electric problem. Filter is driven by PCB 02-179. MAMMOMAT Balance SPB7-115.840.01 Page 15 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 16 LOW ANODE CURRENT could also be due to H.V. generator defect or failure, check it as described in dedicated section of this manual. MAMMOMAT Balance SPB7-115.840.01 Page 16 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 17 Evaluate operating conditions and eventually use One point mode with higher kV. Note Quite impossible with large focus, if happens check very carefully mA, kV, [r] and [o] calibrations. MAMMOMAT Balance SPB7-115.840.01 Page 17 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 18: Technical Menu

    LV= OK Filament 92-073 >> PASS << Rotating Anode 92-074 >> PASS << FIRMWARE REV BAL__ XX TUBE Tube Housing kJ 25°C n..../../....MAMMOMAT Balance SPB7-115.840.01 Page 18 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...
  • Page 19 5) alarm can also occur due to tube overheating when internal thermo switch opens. 6) if in doubt that starter board safety circuits are not recognized by CPU, they can be simulated by means of jumpers on CN5 PCB 01-170 or flat cable CV0174. MAMMOMAT Balance SPB7-115.840.01 Page 19 of 62...

  • Page 20: Technical Errors In Log File

    For kV problems refer to High Voltage generator section in this manual 3) Technical errors in LOG file CPU of MAMMOMAT Balance has a memory with the last 1300 events including errors and fault events. This 1300 events can be uploaded on the PC.

  • Page 21: Memory String

    >6 r0110 p076 i0472 d 0 c100 %100 o011 C1 \ >7 kS206 r0110/0110/0110/0110 38°C [12/03/03 15:20:02]\ ---------------------------------------------------------------- It’s referred to exposure in Zero Point mode with code Af ( no error in automatic mode) MAMMOMAT Balance SPB7-115.840.01 Page 21 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 22: List Of Error Codes

    INVERTER CONTROL BOARD FILAMENT POWER SUPPLY ROTATING ANODE STARTER INVERTER POWER F4 PCB 92-082 F2 + 15P PCB 92-082 F2 + 15° PCB 92-082 ANODE NOT ROTATING MAMMOMAT Balance SPB7-115.840.01 Page 22 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 23: Rotating Anode Starter

    Voltage at TP3 and TP4 is fix and can be adjusted by means of RV1 and RV2 . All voltages are measured with respect to GND Test point of PCB 92-074 during tube running not boost. MAMMOMAT Balance SPB7-115.840.01 Page 23 of 62...
  • Page 24 Typical values of running voltages at TP1 and TP2 for IAE tube XM12 are : VTP1 1.2 V VTP2 2.5 V Factory calibration voltages at TP1, TP2, TP3, TP4 can be found in the tube calibration report. MAMMOMAT Balance SPB7-115.840.01 Page 24 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...

  • Page 25: Function Configuration

    Brake is factory enabled, to avoid significant tube temperature increase it’s recommended to disable brake ( JP1 Open ) for screening or equivalent heavy duty. Brake energy can be equivalent to Rotation start + average exposure. MAMMOMAT Balance SPB7-115.840.01 Page 25 of 62...

  • Page 26: Filament

    92-079 92-073 +13.5 LED5 pulse A CN2 14 pulse K CN2 16 R15 C15 CUROUT 1V=10mA CUREF COMPIN 1V=1khz FROUT THRES LM331 IC6522 MAMMOMAT Balance SPB7-115.840.01 Page 26 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...
  • Page 27 Filament SIEMENS MAMMOMAT Balance SPB7-115.840.01 Page 27 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 28: Anode Current Calibration

    The anode current related to each value kV for each focus can be found in the Tube calibration report. To enter mAH current calibration set DIP1 of SW1 ( PCB 01-170) = ON. MAMMOMAT Balance SPB7-115.840.01 Page 28 of 62...
  • Page 29 Decrease I filament current by 0.050 and repeat exposure. If the display indication is still HHH.H, repeat the above point till you get the indication of mA and no more the HHH.H. MAMMOMAT Balance SPB7-115.840.01 Page 29 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 30 Check if LED1 and LED4 switch OFF after pushing x-ray push button. In such circumstance increase voltage reference at TP3 by means of RV3 When calibration is finished protection circuits MUST be recalibrated MAMMOMAT Balance SPB7-115.840.01 Page 30 of 62...

  • Page 31: Calibration Of Filament Current Protection

    TP13/TP6 during preparation f) connect a voltmeter 10 Vdc f.s. on TP3 and TP6 (GND). g) adjust RV3 till reaching a value equal to voltage measured on TP13/TP6 at above point (e) +10% MAMMOMAT Balance SPB7-115.840.01 Page 31 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 32: Anode Current Check By External Device

    In case of use of a memory oscilloscope values suggested are the same for internal mA meter (40 mAs for the 0.3 mm focus, 13 mAs for the 0.1 mm focus). I(A) do not calibrate kV values not mentioned in the table. WARNING MAMMOMAT Balance SPB7-115.840.01 Page 32 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 33: High Voltage Generator

    Anode current overload results in kV output limitation. NOTICE If not overloaded, kV output is independent of anode loading and overshoot free. kV waveform at 20 kV and 35 kV measured on TP1 MAMMOMAT Balance SPB7-115.840.01 Page 33 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 34: Non Invasive K Vcheck

    404 Vdc 30 kV 418 Vdc 31 kV 432 Vdc 32 kV 446 Vdc 33 kV 460 Vdc 34 kV 474 Vdc 35 kV 488 Vdc MAMMOMAT Balance SPB7-115.840.01 Page 34 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 35: Test Points And Adjustment

    50 kHz kV control from CPU 1/100 VTP1 ( valid in PREP and EXP ) +5.00 Vdc reference (standard calibration) not used TP10 internal input voltage +15 Vdc MAMMOMAT Balance SPB7-115.840.01 Page 35 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 36 High Voltage generator TP1-TP2 for kV checks on (PCB 94-132) RV1 for kV correction MAMMOMAT Balance SPB7-115.840.01 Page 36 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 37: Aec Calibration

    AEC calibration AEC calibration Refer to Start Up manual SPB7-115.815.01..Instructions are also contained in Help Files of DEATA Plus calibration software. MAMMOMAT Balance SPB7-115.840.01 Page 37 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 38: Dose Calculator

    The ID print function on Film can be enabled or not by the user or by the Health Physicist. Calibration and periodic maintenance are based on external calibrated reference Dosimeter. Accessing the program Preliminary operations MAMMOMAT Balance SPB7-115.840.01 Page 38 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 39 Opening a configuration file To open a configuration file or to create a new one the "File"-"Open" menu is provided. MAMMOMAT Balance SPB7-115.840.01 Page 39 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 40 The "Open file" window closes and the main window reflects the loading of the correct configuration file showing the characteristics of the dosemeter and the name of the file. MAMMOMAT Balance SPB7-115.840.01 Page 40 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 41 All modifications that have been made to configuration file are either immediately saved to file or retained in memory. At any point in the program you can save all this modifications, regardless partial savings occurred before. Press "File"-"Save". MAMMOMAT Balance SPB7-115.840.01 Page 41 of 62...

  • Page 42: System Configuration For Calibration

    Reference dose outside kV range of reference Dosimeter must be set at ZERO Radiation table To view and edit the radiation table for the selected mammo press the "Edit"-"Radiation table" menu. MAMMOMAT Balance SPB7-115.840.01 Page 42 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 43 OK. The dialog closes and the entered number overwrites the old one. The curve is redrawn, representing immediately the correction made. MAMMOMAT Balance SPB7-115.840.01 Page 43 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 44 Once all changes are made, you can discard them..or retain in memory. You must save changes to file to permanently store them. MAMMOMAT Balance SPB7-115.840.01 Page 44 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 45: Dosemeter Configuration

    After the above configuration of Focal Spot Position: • set Paddle Position Offset to zero • store configuration values into the Mammo unit • install a shifted compression paddle MAMMOMAT Balance SPB7-115.840.01 Page 45 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 46 For Tube Output and Tube Dose Rate calculations, value in mA of Anode Current @ 28kV in Manual Mode is essential, typical value is 90mA but in any case refer to Tube Calibration report for specific value. MAMMOMAT Balance SPB7-115.840.01 Page 46 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 47: Dosemeter Data

    To modify the response curve for the instruments (the default is a plateau curve) press the "Edit calibration curve" pushbutton. MAMMOMAT Balance SPB7-115.840.01 Page 47 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 48 The ranges of possible values for kV and Factor are those shown in the graph axes. Any value outside this ranges pops- up an error message and quits the MAMMOMAT Balance SPB7-115.840.01 Page 48 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 49 At the end, the table, and the graph below, are updated. Finally, once all changes are made, you can save modifications to file..or discard them and return to main window. MAMMOMAT Balance SPB7-115.840.01 Page 49 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 50: Communications With Mammo Unit

    Press "Download" pushbutton to start the transfer. Once completed, a little dialog tells the status of the transfer, either good or bad. MAMMOMAT Balance SPB7-115.840.01 Page 50 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...

  • Page 51: Options

    Dose calculator Options The only option available is the visualization of the configuration file. This file contains text data related to parameters and radiation values constructed by the program. MAMMOMAT Balance SPB7-115.840.01 Page 51 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...

  • Page 52: Compression System

    Compression system Compression system Introduction The compression device of MAMMOMAT BALANCE consists of a drive motor MT3 with gear box 08883659 coupled to an electromagnetic clutch 08883634. To access drive motor, remove tube cover. To access electromagnetic clutch remove tube cover and c-arm front plate.

  • Page 53: C-Arm Rotation Brake

    Partially unscrew the little screw D that stays on the side of the cylinder, and totally screw E. Turn part B as necessary, reassemble parts and check for effect on brake force. When finished tighten screw D and C. CALIPER MAMMOMAT Balance SPB7-115.840.01 Page 53 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 54: X-Ray / Light Field Alignment Procedure

    C-arm (see figure). In this position the potter is 22 mm ahead than its usual position. 18x24 collimator 24x30 table The table is aligned exactly with the contacts of the C-arm. MAMMOMAT Balance SPB7-115.840.01 Page 54 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04...
  • Page 55 RX tube shifting it back. If the distances are less of 17 mm, it is necessary to shift the tube ahead. To shift the tube, operate the screws shown in the next picture . Screws to remove or shift RX-tube MAMMOMAT Balance SPB7-115.840.01 Page 55 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 56: Light / Beam Alignment

    18x24 film on it, insert an 18x24 collimation plate. Position 18x24 film as in the next picture to simulate x-ray field. To correct front back edges of light field, adjust mirror inclination by means of screw . SCREW MAMMOMAT Balance SPB7-115.840.01 Page 56 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 57 X-ray field alignment To correct lateral edges of light field, adjust lamp holder position by means of screws . MAMMOMAT Balance SPB7-115.840.01 Page 57 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

  • Page 58: Gas Spring Replacement

    1. Switch OFF the unit and turning manually flywheel of carriage motor, move carriage till to align arrows as shown in the next image 2. remove fixing ring from the shaft RING MAMMOMAT Balance SPB7-115.840.01 Page 58 of 62 Siemens AG Troubleshooting Guide Rev.02...
  • Page 59 Gas spring replacement 3. unscrew gas spring from the base plate 4. replace gas spring assembly. Reassembling gas spring, take care of positioning sensing microswitch shaft without damaging it. MAMMOMAT Balance SPB7-115.840.01 Page 59 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 60: Mammomat Balance / Easy Label Communication Protocol

    ID flasher communication protocol MAMMOMAT Balance / Easy Label communication protocol Description of characters and position, from 1 to 44 1 > Line number on EASY LABEL screen Kv tens kV units kV tenths 11 X mAs hundreds 12 X...
  • Page 61 0.1 mAs max 640.0 mAs Dimension of focal spot Manual density +/- 5 Film/Screen 1/16 combination The string is transferred once at the end of the exposure. MAMMOMAT Balance SPB7-115.840.01 Page 61 of 62 Siemens AG Troubleshooting Guide Rev.02...

  • Page 62: Changes To Previous Version

    …refer to Operator’s manual SPB7-115.620.01… Introduction Configuration of ... correction factor from 1 to 20 that will… maximum compression force Brake force Better text and image adjustment MAMMOMAT Balance SPB7-115.840.01 Page 62 of 62 Siemens AG Troubleshooting Guide Rev.02 10.04 Medical Solutions...

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