Page 1
MAMMOMAT 3000 Modular
Service
Modification Instructions
SP
Installation of the option W/Rh anode/filter
combination
© Siemens AG 1998
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.
Register 5 English
Print No.: SPB7-230.092.11.01.02 Doc. Gen. Date: 04.98
Replaces: N/A 65 02 004
Page 2
0 - 2 Revision
Chapter Page Revision
All All 01
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 2 of 4 Siemens-Elema AB
Service Rev. 01 04.98 SPS-UD Solna, Sweden
Page 3
0 - 4 Contents
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MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 4 of 4 Siemens-Elema AB
Service Rev. 01 04.98 SPS-UD Solna, SWEDEN
Page 4
Contents 0 - 3
Page
1 _______Prerequisites __________________________________________________1 - 1
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Tools and expendables required . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Parts required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 - 1
Documents required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Time required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Important notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
2 _______Disassembly __________________________________________________2 - 1
Removal of collimator cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
Removal of lamp holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
Removal of diaphragm-plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
Removal of old filter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3
3 _______Installation ____________________________________________________3 - 1
Installing the new filter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
Reinstalling the diaphragm-plate assembly . . . . . . . . . . . . . . . . . . . . . . .3 - 1
Connecting the service PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
Configuring and calibrating the tungs ten (W) anode . . . . . . . . . . . . . . . . . . 3 - 2
Checking the rotation movement on the new filter disk . . . . . . . . . . . . . . . . . 3 - 2
Panel programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 4
Adjusting the bias voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 4
Adapting the filament heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 4
Large focus W/Rh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 4
Small focus W/Rh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5
Adjusting the light field/radiation field . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5
Large tungsten focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 5
Small tungsten focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5
Filter purity verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 7
Evaluation of discrepancies on te st films . . . . . . . . . . . . . . . . . . . . . . 3 - 7
Final procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 8
Siemens-Elema Register 5 SPB7-230.092.11 Page 3 of 4 MAMMOMAT 3000 Modular
Solna, Sweden Rev. 01 04.98 SPS-UD Service
Page 5
Prerequisites 1
Purpose 1
The purpose of this modification is to upgrade a MAMMOMAT 3000 Modular with Mo
X-ray tube to Mo/W X-ray tube.
Tools and expendables required 1
• Standard assembly tools
• Circlip pliers
• Denatured ethanol, 99.5 % pure (may only be denatur ed with toluene, which does not
leave any residues when evaporated) for cl eaning the filters or tube window.
• Lint-free cloth or Q-tips (c otton tops) for cleaning
• Lint-free cotton gloves
• Service PC with connecting cable (99 00 440 RE999)
Parts required 1
Filter-assembly kit, part no. 64 82 967 X041E, comprising the following parts:
1 - 1
Qty Part
1 Filter assembly
1 Retaining ring
5 Allen screw M5 (countersunk)
4 Cable tie
1 Adapter cable
Documents required 1
Installation and Start-Up Instructions for MAMMOMAT 3000 Modular.
Time required 1
Approximately four hours for one person.
Important notes 1
• The Allen screws can be very hard to loosen . When unscrewing, be sure of enough grip
with the Allen screwdriver, so th at the screws do not get damaged.
• The filters in the filter assembly must n ot be contaminated in any way. Therefore, alway s
use lint-free cotton gloves dur ing the handling of the filter assembly. Do not remove the
filter assembly from its pa cking until installation.
• If the filters have been contaminated, clean by using the specified alcohol. Other types
of solvents may leave residues.
Siemens-Elema AB Register 5 SPB7-230.092.11 Page 1 of 2 MAMMOMAT 3000 Modular
Solna, Sweden Rev. 01 04.98 SPS-UD Service
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1 - 2 Prerequisites
Symbols 1
Checks and adjustments requiring X-ray to be switched on are marked with the radiationwarning symbol. Protect yourself.
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 2 of 2 Siemens-Elema AB
Service Rev. 01 04.98 SPS-UD Solna, Sweden
Page 7
Disassembly 2
NOTICE
NOTICE
Removal of collimator cover 2
2
2
1
Fig 2.1
2 - 1
MAM00149
1. Switch off the MAMMOMAT 3000 Modular.
2. Remove the swivel-arm covers.
3. Remove the collimator cover (1) by unscrewing f our Allen screws (2).
Do not remove any other Allen screws than shown in figure 2.1.
4. Strap the collimator cover to the stand.
Removal of lamp holder 2
3
4
3
Fig 2.2
MAM00150
1. Remove the lamp holder (4) by unscrewing the two Allen screws (3).
Be careful with the filter assembly.
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2 - 2 Disassembly
2. Lift the holder (4) and carefully pu sh it inside the collimator.
Removal of diaphragm-plate assembly 2
6
5
6
MAM00151
Fig 2.3
1. Loosen the diaphragm-plate assembly ( 5) by unscrewing four Allen screws (6).
2. To release the diaphragm-plate assemb ly, cut the cable ties on each side of th e
tube head
.
7
MAM00152
Fig. 2.4
3. Lower the diaphragm-plate assembly and let it hang in the cables (7).
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 2 of 4 Siemens-Elema AB
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Disassembly 2 - 3
NOTICE
Removal of old filter assembly 2
12
8
9
10
Fig 2.5
11
1. Remove retaining ring (8) and bearing (9).
2. Remove the two front guides (10). The rear guide need no t be removed.
3. Remove the filter assembly.
Be careful not to damage the optical switch position sensor (11)
during the removal.
10
MAM00153
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Solna, Sweden Rev. 01 04.98 SPS-UD Service
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2 - 4 Disassembly
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Service Rev. 01 04.98 SPS-UD Solna, Sweden
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Installation 3
NOTICE
NOTICE
Installing the new filter assembly 3
See figure 2.5 and 3.1.
1. Position the new filter assembly so that the c og disc engages with the motor
pinion (12) and the rear guide. The angul ar position of the filter assembly i n
relation to the motor pi nion is arbitrary.
2. Install the two front guides (10).
3. Install the bearing (9) and secur e with the retaining ring (8).
Do not touch the filters with bare fingers. Use lint-free cotton
gloves. Be careful not to damage the optical switch position
sensor (1 1) during the installation.
11
3 - 1
Drive motor
Fig. 3.1 Position sensor and drive motor of the filter assembly
Reinstalling the diaphragm-plate assembly 3
See figure 2.2 and 2.3.
Be careful with the filter assembly.
1. Fit the diaphragm-plate assembly (5) to t he diaphragm-plate holder, while
carefully putting the lamp ho lder into position, and fasten with t he four Allen
screws (6).
2. Fit the lamp holder (4) to the diaphr agm-plate holder and fasten with th e two Allen
screws (3).
3. Replace the cable ties that were cut during the r emoval of the diaphragm-plate
assembly.
Siemens-Elema AB Register 5 SPB7-230.092.11 Page 1 of 8 MAMMOMAT 3000 Modular
Solna, Sweden Rev. 01 04.98 SPS-UD Service
MAM00154
Page 12
3 - 2 Installation
NOTICE
Connecting the service PC 3
1. Connect a service PC to the MAMMOMAT 3000 Modular.
2. Switch on the MAMMOMAT 3000 Modular.
3. Start the service program.
Configuring and calibrating the tungsten (W) anode 3
1. In “Main menu”, choose “Configuration”, then “Anode”. Set the value to “Enable”
and save with <F2>.
2. In “Main menu” choose “Configuration” and then “ Power”. Check that large
tungsten focus is programmed to 4.7 kW and small t ungsten focus is
programmed to 0.85 kW. If it is not, chang e it and save with <F2>.
3. Check the line resistance and reduce the ge nerator power if necessary (see
installation instruct ions, measuring the line resistance).
Checking the rotation movement on the new filter disk 3
1. Switch on the MAMMOMAT 3000 Modular.
2. Mount the magnification table and select W/Rh on the control panel. Check that
there is sufficient spac e between the cables and the rotating filter assembly.
3. Select different anode/filter combi nations on the control panel. During t he
operation of the filter-as sembly motor, check that the filter assembly rotates
smoothly without any tendency of jamming. Should this not be the case, this is
probably caused by too tight a fit bet ween the cog disc and the motor pinion. This
can be adjusted by following the i nstructions below.
Perform step 4-13 only if the result of the functional check
according to point 2 under “Checking the rotation movement on
the new filter disk” above is unsatisfactory.
Fig 3.2 X-ray tube
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 2 of 8 Siemens-Elema AB
Service Rev. 01 04.98 SPS-UD Solna, Sweden
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MAM00155
Page 13
Installation 3 - 3
NOTICE
4. Cut the cable ties at the two rear mounting scr ews for the X-ray tube.
5. Remove the four mounting screws (13) to loosen the X-r ay tube (see fig 3.2).
6. Lift the X-ray tube at the fr ont to access the filter-ass embly motor.
Do not disconnect any cables.
7. Loosen the screws for the filter-assembly motor , but do not remove them. Adjust
the position of the motor so that the f ilter assembly can rotate freel y without
jamming (see fig 3.3).
8. Tighten the screws for the motor.
9. Reposition the X-ray tube paying atte ntion to the guiding pin.
Fig 3.3 Adjusting the filter-assembly motor
MAM00156
10. Tighten the four mounting screws of the X-ray t ube.
11. Provide new cable ties at the rear mounting scr ews of the X-ray tube.
12. System ON.
13. Check the operation of the filter-as sembly motor by selecting different anode/f ilter
combinations on the control panel.
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3 - 4 Installation
NOTICE
Panel programming 3
1. Reprogram the fourth fixed program accord ing to the procedure described in t he
operating instructions.
2. The fourth program should have the foll owing parameters (unless the customer
has other wishes):
- 26 kV
- Iontomat H
- Film density adjustment 0.0
- Anode filter combination W/Rh
Adjusting the bias voltage 3
1. Attach a magnification table (small f ocus is selected).
2. Select the W/Rh anode/filter combinat ion.
3. Connect digital voltmeter to H3(-) a nd G(+) at the tube housing filament
connections.
4. Adjust R4 on D706 to the voltage stated in the test certificate for the tube
(tungsten focus).
Be sure not to expose surrounding people to radiation. Protect
yourself.
Adapting the filament heating 3
In the test certificate for the X-ray tube you can fi nd the filament current values for all
focuses.
1. In the service program choose “Main menu” then “ Configuration” and then
“filament” enter the values fo r small and large tungsten focus reduc ed by 200 (e.g.
if the test certificat e states a filament current of 7000, you shall enter 6800).
2. Save the values with <F2>.
Large focus W/Rh 3
1. Mount an 18 8 24 table.
2. In the service program choose “Main menu” then “ Configuration” and then
“Filament”.
3. Place the marker on “Large focus tungsten”.
4. Press <F3> (learn).
5. The message “Please wait. Adjusting data on co ntrol panel” is shown on the
screen, then the message “CAUTION!!! Pres sing <ALT> + <F6> releases
exposure. Protect yourself.” is shown.
6. Press <ALT> + <F6> to release exposure.
7. After the exposure the divergence (%) f rom the correct adaptation value is shown.
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 4 of 8 Siemens-Elema AB
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Installation 3 - 5
NOTICE
8. Press ESC and choose once more “Large focus tungsten” and < F3> (learn).
Press <ALT> + <F6> to release exposure.
9. Repeat step 8 until the divergence is with in the interval -5% to + 5%.
Small focus W/Rh 3
1. Mount a magnification table.
2. In the service program choose “Main menu” then “Confi guration” and then
“Filament”.
3. Place the marker on “Small focus tungsten”.
4. Repeat the same procedure as described in ch apter “Large focus W/Rh” (at point
8. choose “Small focus tungsten”).
Adjusting the light field/radiation field 3
In “Main menu”, “Configuration”, “Beam limiting devi ce” enter a default value of 17 mm for
both small and large tungsten focus. Press <F2> to calibrate and then <F2> to save.
Large tungsten focus 3
1. Attach an 18 8 24 table.
2. Select W/Rh anode/filter combination.
3. Check the light field/radiation fi eld according to the Installati on and Set-up
Instructions for MAMMOMAT 3000 Modular.
The beam limiting device must not run into its mechanical
endstop. If it does the value must be changed.
4. If necessary perform adjustments. The adjus tment of the over-radiation at the
chest wall side is done by increa sing/decreasing the value in “Main menu”,
“Configuration”, “Beam limit ing device”, “Large tungsten, mm from edge”. Pres s
<F2> to calibrate and then<F2> to save.
Small tungsten focus 3
1. Attach an 18 8 24 table.
2. With the MAMMOMAT 3000 Modular switched off, make a connection between
X813.9, board side, an D801 and +24 V. This will si mulate the magnification table
and small focus will be selected.
To do this (see fig 3.4):
2.1 Unplug X813 on D801.
2.2 Eject pin 9 on connector X813 and isolate the pin.
2.3 Insert the pin of the cable supplied in the kit, in location 9 of X813.
2.4 Reinsert X813 on D801.
2.5 Connect the other end of the supplied cable to MP 24VF on D802.
Siemens-Elema AB Register 5 SPB7-230.092.11 Page 5 of 8 MAMMOMAT 3000 Modular
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3 - 6 Installation
NOTICE
CPU Board:
D801
Motor Control Board:
D802
36
2
X813
35
9
1
24 VF
Fig 3.4
3. Select W/Rh anode/filter combination.
4. Check the light field/radiati on field according to the Installati on and Set-up
Instructions for MAMMOMAT 3000 Modular.
The beam limiting device must not run into its mechanical
endstop. If it does the value must be changed.
MAM00160
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 6 of 8 Siemens-Elema AB
Service Rev. 01 04.98 SPS-UD Solna, Sweden
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Installation 3 - 7
NOTICE
5. If necessary perform adjustments. The adjus tment of the over-radiation at the
chest wall side is done by increa sing/decreasing the value in “Main menu”,
“Configuration”, “Beam limit ing device”, “Small tungsten, mm from edge”. Pr ess
<F2> to calibrate and then <F2> to s ave.
6. With the MAMMOMAT 3000 Modular switched off, follow th e procedure
described in step 2 in the reversed ord er to remove the adapter cable and restor e
connector X813 to its original st ate.
Filter purity verification 3
The test procedure is dependent on the options available at the site.
For best verification, fi rst use magni ficat ion tabl e and then 24 8 30 object table. The ma g-
nification table activates the small focus, which will reproduce possible impurities on a
larger scale. The 24 8 30 table is used t o check the ful l area of the exposed f ilm. I f any of
these two options is not avai lable, use on ly t he on e avail able. If none of these two options
is available, use the 18 8 24 object table.
For each type of filter, perform the following test:
1. Mount the magnification table.
2. Insert a loaded film cassette in the t able.
3. Select the filter to be checked.
4. Select kV and mAs (the exposure setting depends on the fi lm/screen combination
used). Make an exposure.
5. Develop the film.
6. Place the film on a film viewing device. The fi lm shall have an even grey
exposure. If not, make a new exposure wit h a different exposure setting.
7. If there are any visible particles or differences in homogeneity, proceed accor ding
to “Evaluation of discrepancies on test films” below, until the discr epancy is
removed.
8. Repeat steps 227 using a 24 cm 8 30 cm (or 18 cm 8 24 cm) object table.
Evaluation of discrepancies on test films 3
1. a) Expose a film with a different filte r.
b) Expose a film with another cassette.
c) Expose a film with the cassette pla ced on top of the table.
Be aware of when performing 1c with magnification table, the
magnification factor will be affected. This must be taken into
consideration when comparing the test film with the original film.
2. Compare the original film with the test fi lms exposed in 1a7c.
If there are no discrepancies on the f ilm exposed according to 1a, the problem lies
in the filter. The previousl y used filter must then be cleaned with cott on tops and
ethanol.
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3 - 8 Installation
If no discrepancies appear in 1b, the problem lies in the cassette.
If no discrepancies appear in 1c, the problem lies in the object table.
3. If discrepancies still appear in the same area, when comparing the original fil m
with the test films from 1a7c, the X-ray tube window must be examined for dirt
and, if necessary, be cleaned. Shou ld the discrepancies still remain, the f ault is in
the X-ray tube.
Final procedure 3
1. Fit the collimator cover (1) and fasten wi th the four Allen screws (2) (see fi g 2.1).
Check that all three anode/filt er combinations can be chosen for both large/ small
focus and 24 8 30 table (if used).
2. System OFF.
3. Reinstall the swivel-arm covers.
MAMMOMAT 3000 Modular Register 5 SPB7-230.092.11 Page 8 of 8 Siemens-Elema AB
Service Rev. 01 04.98 SPS-UD Solna, Sweden
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