Siemens MAMMOMAT Operating and maintenance instructions

MAMMOMAT Balance
SP
The Maintenance Protocol
SPB7-115.832.01…
is required for this instruction
Maintenance Instructions
Print No.: SPB7
-
115
.
831
.
01
.
01
.
0
2
Replaces: n.a.
X
© Siemens AG 2004
The reproduction, transmission or
use of this document or its contents
is not permitted without express
w
ritten 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: 05.04

Revision
MAMMOMAT Balance SPB7-115.831.01 Page2of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
Chapter Page Revision
All all 01
Document revision level
The document corresponds to the version/revision level effective at the time of system delivery. Revi-
sions to hardcopy documentation are not automatically distributed.
Please contact your local Siemens office to order current revision levels.
Disclaimer
The installation and service of equipment described herein is to be performed by qualified personnel
who are employed by Siemens or one of its affiliates or who are otherwise authorized by Siemens or
one of its affiliates to provide such services.
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.

Contents
MAMMOMAT Balance SPB7-115.831.01 Page3of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
1 GENERAL INFORMATION....................................................................................................................5
1.1 TRAINING............................................................................................................................................5
1.2 REQUIRED DOCUMENTS......................................................................................................................5
1.3 REQUIRED TOOLS, MEASUREMENT AND AUXILIARY DEVICES ................................................................5
1.4 REQUIRED LUBRICANTS ......................................................................................................................5
1.5 TEXT EMPHASIS ..................................................................................................................................6
1.6 SAFETY INFORMATION AND PREVENTIVE MEASURES...........................................................................7
1.7 EXPLANATION OF ABBREVIATIONS.......................................................................................................8
1.8 SYMBOLS............................................................................................................................................8
2 SYSTEM..................................................................................................................................................9
3 COLUMN STAND..................................................................................................................................10
4 COMPRESSION SYSTEM....................................................................................................................11
5 ROTATING ANODE STARTER............................................................................................................12
6 FILAMENT.............................................................................................................................................14
7 HIGH TENSION POWER SUPPLY......................................................................................................15
8 MISCELLANEOUS................................................................................................................................18
9 FINAL TESTS........................................................................................................................................21
10 CHANGES TO PREVIOUS VERSION ...............................................................................................22

Contents
MAMMOMAT Balance SPB7-115.831.01 Page4of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
This page intentionally left blank.

1 General information
MAMMOMAT Balance SPB7-115.831.01 Page5of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
1 General information
1.1 Training
•Self-instruction packet or training workshop and at least 1 installation
1.2 Required documents
•Planning Guide SPB7-115.891.01.01.02
•MAMMOMAT Balance Wiring Diagrams SPB7-115.844.01.01.02
•Installation and Start-up Instructions SPB7-115.814.01.01.02
•Maintenance protocol SPB7-115.832.01.01.02
•Instructions for use SPB7-115.629.01.01.02
•Service Instruction SPB7-115.840.01.01.02
1.3 Required tools, measurement and auxiliary devices
•Oscilloscope
•Oscilloscope probe 1:100 > 600Vdc
•Digital multimeter
•Non invasive kVp-meter (mammo)
•Dosemeter (mammo)
•Service PC with serial port (connection cable is supplied with the unit)
•MAMMOMAT Balance SSW (Service Software Program is supplied with the unit)
•SIB phantom or Normi 7 or 4 cm Plexi or customer phantom (supplied by customer)
•Sensitometer / Densitometer
•Film pack 18x24 and 24x30 if it occurs
•Cleaning agents specified in the operating instructions
•Protective conductor meter
•Bathroom balance with tennis ball
•Spray enamel according to the PG (to touch up chipped paint)
•Standard installation tools
•Plexiglas phantom 2cm, 2cm, 2cm, 1cm, 0.5cm for AEC calibration (supplied with the unit)
1.4 Required lubricants
•All purpose grease PD2
•Viscogen oil

1 General information
MAMMOMAT Balance SPB7-115.831.01 Page6of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
1.5 Text emphasis
DANGER indicates when there is an immediate danger that leads
to death or serious physical injury.
WARNING indicates a risk of danger that may lead to death or to serious
physical injury.
CAUTION used with the safety alert symbol indicates a risk of danger that
leads to slight or moderate physical injury and/or damage to property.
NOTICE used without the safety alert symbol indicates a risk of danger that if
disregarded leads or may lead to a potential situation which may result in an
undesirable result or state other than death, physical injury or damage to
property.
NOTE contains information provided with special emphasis to facilitate proper
use of the equipment or proper execution of a procedure, i.e. hints, tips.
DANGER
NOTE
NOTICE
CAUTION
WARNING

1 General information
MAMMOMAT Balance SPB7-115.831.01 Page7of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
1.6 Safety Information and Preventive Measures
•When completing repair work and tests, please note:
-the product-specific safety information in the document,
-the safety information in TD00-000.860.01….
•If the system is only switched off at the control panel, line voltage is
present at: Mains input terminal blocks; Fuses F1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12; Main contactor TLR1 and emergency cut off buttons PB2 and PB3;
Line filter FL1; PCB 03-186 and related parts (solid state relay RY1, resistor
R1).
•Voltage higher than 60Vac is present on: Terminal M3; Transformers
TF155, TF165 and their connected parts; C-arm driving gear motor MT1
and limit switches MW1, MW2; Rotating anode starter 92-074 and
capacitors C5, C6; Tube Rotating Anode Cable and supply connections.
•After shut down, there may still be dangerous voltage up to 550Vdc on
inverter power supply. Voltage decreases to zero by means of bleeder
resistors in not less than 5 minutes due to capacitor size, energy stored is
still dangerous if short to ground occurs when It’s less than 60Vdc and till
when capacitors are not fully discharged: Rectifier bridges PD1, PD2;
Capacitors block C1, 2, 3, 4; Inverter block and electrical connection to
High Voltage generator
•High-voltage 20 ÷ 35 kV is present on: High Voltage generator; High
voltage cable; X-ray tube.
•Use ESD precautions for handling Printed Circuit Boards containing ESD
sensitive components.
•To prevent accidental triggering of High Voltage and X-Radiation output x-
ray pushbutton has Dead Man function by which H.V. generator is
disconnected by CPU if push button is not intentionally pressed. For more
safety during intervention: 1) DEMO MODE can be selected by means of
DIP 3 SW1 PCB 01-170. 2) Fuses F6, F9 can be removed and Inverter
voltage monitor disabled by means of DIP2 SW2 set to ON. Vdc across
C1,2,3,4, inverter and H.V. transformer will be zero after discharging time.
•Tests or adjustments that must be made with radiation switched on are
identified with the radiation warning symbol .
During these types of adjustments, radiation protective clothing must be
worn.
CAUTION

1 General information
MAMMOMAT Balance SPB7-115.831.01 Page8of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
1.7 Explanation of abbreviations
Abbrev. Explanation
SI Safety Inspection
SIE Electrical Safety Inspection
SIM Mechanical Safety Inspection
PM Preventive Maintenance
PMP Preventive Maintenance Preventive Parts Replacement, External
Inspection, etc.
PMA Preventive Maintenance Adjustments
PMF Preventive Maintenance , Function Check, Operating Value Check
QQuality Check
QIQ Image Quality Check
QSQ System Quality Check
SW Software Maintenance
CSE Customer Service Engineer
CS No. Customer-Specific Number
IVK Installed Volume Components
1.8 Symbols
Checks and adjustments that must be performed with radiation ON are identified by the
radiation warning symbol.

2 System
MAMMOMAT Balance SPB7-115.831.01 Page9of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
2 System
SIM Radiation protection
•Check the radiation protection shield for possible damage (n°1, see figure).
•Information regarding the lead equivalent value must be legible.
SIM C-Arm –attachment and handles
•Check by pulling/pushing on both handles that no parts have got loosened (n°2, see figure).
SIM Tube cover
•Check that tube cover hasn’t got loosened by pulling/pushing it in different directions (n°3, see
figure).
SIM Table retain
•Check that all tables are retained when inserted and can’t be removed with very light pulling force.
•Inspect connectors and connector cover integrity on the table support (n°4, see figure).
SIE Cable
•SystemOFF
•Check the condition of the power connection cable and the corrugated tubing (n°5, see figure).
•Check the condition of foot pedal switches (n°6, see figure).
PMF Rotation movements
•Is the rotation smooth and noiseless through the entire range?
•Is the rotation brake holding the C-Arm position?
•Is the mechanical goniometer functional?
•Is the C-Arm rotation disabled without table?

3 Column stand
MAMMOMAT Balance SPB7-115.831.01 Page10 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
3 Column stand
SIM C-Arm carriage wheels
•Do the wheels show any damage or sign of wear (n°1, see figure)?
SIM C-Arm carriage rails
•Do the rails show any damage or sign of wear or loosened fixation (n°2, see figure)?
SIM Gas spring
•Does the gas spring assembly show any damage or sign of wear or loosened fixation (n°3, see
figure)?
•Does the alarm come out if safety micro-switch is disconnected (n°4, see figure)?
SIM Vertical C-Arm drive
•Do the chain, chain fixation and gear box show any damage or sign of wear or loosened fixations
(n°5, see figure)?
SIE Limit switches
•System ON. Move the lifting carriage up and down.
•Do the first limit switches MW4 (up) and MW3 (down) stop the carriage travel at the top and at the
bottom?
•Manually activate safety switches MW2 (up) and MW1 (down) when carriage is at safety distance.
Lifting carriage must be blocked.
PMF Vertical travel
•Is the vertical travel smooth and noiseless?

4 Compression System
MAMMOMAT Balance SPB7-115.831.01 Page11 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
4 Compression System
SIM Testing the manual movement
•SystemOFF
•Move compression plate attachment Up/Down it must move free and without friction and noise
SIM Testing compression plate support
•Check that levers and retain pins are not damaged and release normally.
•Check for fixation of each compression plate
SIM Testing lexan of compression plates for wear and tear
•Check each plate for possible damage that can result harmful to patients.
SIM Check foot pedal switches functionality
•Check for each pedal switch functionality
SIM Testing magnification support fixation
•Check that the magnification plateform can be fixed at 1,5x and 2x
SIM Testing the “Compression” force
•Use shifted compression plate, position a bathroom balance on the top of the table and tennis ball,
select maximum compression force and check it.
SIM Testing the “Decompression” force
•Move compression plate up and check that force to stop it by hand is very light.
PMF Compression Thickness Display
•With large focus selected and compression plate in place check for compression thickness
indication using Plexiglas phantom blocks to simulate breast thickness.
•Repeat with small focus and magnification plateform + compression plate
If thickness value is not correct refer to service instructions SPB7-115.840.01…, chapter of dosimeter
where source to skin distance calibration is described.
Breast thickness is obtained by such value subtracted by F.F.D.

5 Rotating anode starter
MAMMOMAT Balance SPB7-115.831.01 Page12 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
5 Rotating anode starter
PMF Protection circuit check
•For protection circuit check, the anode must be put in rotation and it is advisable as follows:
DEMO mode with DIP 3 SW1 of board 01-170 switched ON
Manual mode with at least 200 mAs
In this mode, no X-rays are generated and measurement time is sufficiently long.
PMF Control LED (brake enabled)
•PCB 92-074
LED1 (yellow) bright during normal rotation phase (RUN)
LED2 (yellow) bright during breaking or alarm
LED3 (yellow) bright during breaking
LED5 (green) bright in stand by or rotation
LED6 (green) bright during rotation
V(TP3) = 0.65xV(TP1)
V(TP4) = 0.65xV (TP2)
Stand by Tube run
Stand by Tube run

5 Rotating anode starter
MAMMOMAT Balance SPB7-115.831.01 Page13 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
PMF Control LED (brake disabled)
•PCB 92-074
LED1 (yellow) bright during normal rotation phase (RUN)
LED2 (yellow) dark during breaking or alarm
LED3 (yellow) dark during breaking
LED5 (green) bright in stand by or rotation
LED6 (green) bright during rotation
PMF Brake disabling for heavy use
•If upon log file inspection high duty comes in evidence it’ recommended to disable anode rotation
brake to reduce operative tube assembly temperature.
For more details refer to service instructions SPB7-115.840.01….

6 Filament
MAMMOMAT Balance SPB7-115.831.01 Page14 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
6 Filament
PMF Anode current check
Before entering any calibration mode, it’s necessary to select the manual mode and 40mAs for 0.3
mm focus or 13mAs for 0.1 mm focus.
In calibration mode, the following keys are active:
•Focal spot selection
•kV selection
•filament current adjustment by mAs + / -push buttons.
With reference to the tube calibration report:
•Set to ON DIP1 SW1 of PCB 01-170To access mAH current calibration
•Set to ON DIP2 SW1 of PCB 01-170To access mAL current calibration
In the mAs window of the display, the following parameters will appear:
•mAH or mAL, filament current If in Ampere;
•selected mAs
•after each exposure the expected anode current value and effective anode current in mA.
PMF Control LED
LED1 Bright in normal conditions.
LED3 Bright if small focus is selected
LED4 Bright if Filament is ON
LED5 Bright during x-ray exposure. Brightness is proportional to tube anode current.
More details can be found in Service Instruction SPB7-115.840.01….
mAH If4,710 A
90 Ia90,1 mA
mAs 40

7 High tension power supply
MAMMOMAT Balance SPB7-115.831.01 Page15 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
7 High tension power supply
PMF kV waveforms
The oscillogram shows the H.V.vaweform at 20 kV and 35 kV measured on TP1.
kV wave form has no overshoot for any kV / mA loading factors combination.
kV risetime
PMF Internal kV check (TP1/TP2)
•DVM 1000Vdc f.s. or oscilloscope with 1:100 1000Vdc probe can be connected to TP1/TP2
(GND) of PCB 94-132, see page 17.
•Remove any table, select Manual Mode and an mAs value high enough to allow stable
reading.

7 High tension power supply
MAMMOMAT Balance SPB7-115.831.01 Page16 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
KV VTP1/2 (±1%)
20 kV 279 Vdc
21 kV 293 Vdc
22 kV 307 Vdc
23 kV 320 Vdc
24 kV 334 Vdc
25 kV 348 Vdc
26 kV 362 Vdc
27 kV 376 Vdc
28 kV 390 Vdc
29 kV 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
kV to TP1/TP2 PCB 94-132 conversion table
Values form the above table are valid only if VTP8 is 5.00 Vdc (standard calibration).
If for any reason kV are not correct within no more than 1kV calibration is possible
By means of RV5 PCB 94-132.
If calibration is necessary, Pivot value is 28kV
kV values are not affected by the replacement of Inverter or H.V. transformer if VTP8
is 5.00Vdc (standard calibration).
PMF External kV check
Measurement of the kV value with non-invasive instruments MUST be done exclusively with
Molibdenum anode and Molibdenum filter without compression plate.
Measurement of the kV value done with non-invasive instruments is affected by intrinsic linearity error
depending on the kV. It is advisable to refer to the instrument manual and in particular to the
indications about corrective coefficients depending on the kV and the thickness of the Molybdenum
filter. A tube that shows metallization problems on the ray window does not allow correct non invasive
measurement of the kV and MUST nevertheless be replaced.
The most reliable and precise measurement is done with an external HV divider.
NOTE

7 High tension power supply
MAMMOMAT Balance SPB7-115.831.01 Page17 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
PMF Checking and adjustment points
TP1-TP2 for kV checks on (PCB 94-132)of inverter block 08883436
RV1 for kV correction
PMF CONTROL LED
Green LED1 indicates that fuse F2 of PCB 94-132 is OK.
Yellow LED 2 turns on during exposure and can be used to verify continuous or pulsated X-ray
emission.

8 Miscellaneous
MAMMOMAT Balance SPB7-115.831.01 Page18 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
S I E M E N S
8 Miscellaneous
SIE Testing the radiation field / light field
•Proceed with the test according to the Installation & Start-Up instructions
SPB7-115.814.01… chapter "Checking the radiation field limitation".
PMF Automatic filter selection
•If it exists select it from the control panel and check that audible sound during movement is
normal.
PMF RX signal lamp
•Does the radiation-ON indicator light up?
PMF AEC Detector test
•Check the Sensibility test [r] parameter as following:
During the test, the system should be configured as shown in the figure below.
•Install Grid table 18x24
•Install 18x24 collimation plate
•Select LARGE focus
•Remove compression plate
•Remove cassette
•Select ZERO POINTS technique

8 Miscellaneous
MAMMOMAT Balance SPB7-115.831.01 Page19 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
•Disable potter bucky by inhibiting compressor release at exposure end and pressing the
"Compression +" key
•Position detector at first stop on patient side
•Position the 7-cm-thick Phantom so to completely cover the detector.
•Repeat the test for each one of the three fields.
This configuration was so chosen as to exclude all variable elements that may exist between the
X-ray source and the detector.
•Carry out an exposure and then check that [r] value is within ±10 of the value from the
phantom label.
•At the same time check that [o] value is not 0 (zero) or higher than 12.
If values are out of range adjust according to Service Instruction SPB7-115.840.01....
SIE Calculated Dose test
•Refer to Service instruction SPB7-115.840.01… and check values according to previous
calibration report.
PMF Table functions and safety locks
•Check that control LED and sensing micro-switches are working properly as described in the
Instruction for use SPB7-115.629.01… .
PMF Blocking exposure release
•Exposure release must be blocked under the following conditions (indicated on the control
console):
-No cassette is inserted.
-Cassette was not changed after the last exposure.
-No collimation plate
SIE Emergency STOP
•Press Emergency STOP on each side of the unit, one at a time, and check that unit is
completely switched OFF
SIE Exposure and error data recorder
•Read out the last 1300 exposures/errors memory and error log file with the Service PC and
software .
SIE Delete Exposure and error memory
•Reset it by means of control panel pushbuttons 12 + 9 (+/-) all together, long beep will show
that memory clear is in progress.
SIE Annotate exposure counters
•Unit has two different exposure counters that for different reasons can differ between them.
Annotate exposure counter from technical menu and PCB 03-188
QIQ Testing film O.D. linearity
•Attach the most frequently used exposure system (e.g. grid table 18 x 24).
•Load the "test cassette" with film and insert it.
•Verify same conditions of previous calibration and/or maintenance
QIQ Testing image quality
•Attach the most frequently used exposure system (e.g. grid table 18 x 24).
•Load the "test cassette" with film and insert it.
•Position the SIB phantom over 2 cm Plexiglas or other IQ phantom (e.g.Normi 7).
•Select Zero Point mode and automatic decompression.
•Compress somewhat and release an exposure.

8 Miscellaneous
MAMMOMAT Balance SPB7-115.831.01 Page20 of 22 Siemens AG
Maintenance Instructions Rev.01 05.04 Medical Solutions
QIQ Phantom exposures
•Compare the phantom exposures with those on hand and / or archive them for the next
maintenance as starting values.