Siemens MULTIMOBIL 5C Troubleshooting Manual Download Page 22

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Service Instructions

Multimobil 5C

Siemens Ltd. Med India

Version 5.0

Page 21 of 73

5.1.2 Checking the fuses

Open the front cover of the control unit.
Loosen the Fuse carrier, which are mounted on the base of the control unit and check
the continuity of fuse link. If fuse link has responded for over current replace the Fuse
Link.

5.1.2.1

Fuses on Transformer Plate

Identification Rating

Purpose

16 A Delayed

Mains Fuse

16 A Delayed

Mains Fuse

6A Delayed, Glass cartridge

Motor Supply

6A Delayed, Glass cartridge

Motor Supply

6A Delayed, Glass cartridge

Motor Supply

6A Delayed, Glass cartridge

Charging

resistor

capacitor bank

6A Delayed, Glass cartridge

SMPS supply SMPS 1 & 2

6A Delayed, Glass cartridge

SMPS supply D982 & D985

Note: All Fuses are rated for 250V

5.1.2.2

Fuses on D506

Identification Rating

Purpose

250 mA Delayed, Glass Cartridge T1 transformer primary

630 mA Delayed, Glass Cartridge 240/264 V AC Supply

630 mA Delayed, Glass Cartridge 24 V for K3, K4, K5 & K6

relays

4 A Delayed, Glass Cartridge

Filament Circuit

Note: All Fuses are rated for 250V

5.1.2.3

Fuses on D508

Identification Rating

Purpose

100 mA Delayed, Glass Cartridge Collimator power supply

Note: All Fuses are rated for 250V

Summary of Contents for MULTIMOBIL 5C

Page 1: ...ens 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 rights including rights created by patent grant or registration of a utility model _or_ design _are_ reserved SP Troubleshooting Guide ...

Page 2: ...uctions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 1 of 73 Copyright SIEMENS LTD All rights reserved For internal use only Multimobil 5C Med Service Instructions Version 5 0 Copyright SIEMENS LTD Med INDIA ...

Page 3: ...ROUTINE CHECKS 10 2 5 1 Daily checks 10 2 5 2 Monthly checks 11 2 5 3 Performance Check Every Six months 11 2 6 CALIBRATION CHECK 12 2 6 1 Control Voltages 12 2 6 2 Signals 12 2 6 3 Exposure 13 2 6 4 Timing 13 2 6 5 kVp Measurement 13 2 6 6 mA mAs Measurement 14 2 6 7 Tuning 14 2 7 YEARLY CHECKS 15 2 8 PARTS SUBJECT TO WEAR 15 2 9 CHECKS PRIOR TO SWITCH ON AFTER PROLONGED SHELF LIFE 16 2 10 CHECKS...

Page 4: ...ADJUSTMENTS 44 7 1 1 BRAKES 44 7 1 2 BEARINGS 45 7 1 3 V BELT 46 7 1 4 CHAIN 46 7 2 PARTS WHICH NEEDS SERVICING OR REPLACEMENTS 47 7 2 1 V Belt 47 7 2 2 Bearings 47 7 2 3 Brake liners 48 7 3 TROUBLE SHOOTING AND RECTIFICATION 48 8 APPENDIX I 50 8 1 SPECIFIC ERROR CODE HANDLING 50 8 1 1 Unit not turning ON 50 8 1 2 No X ray 51 8 1 3 No Standby 53 8 2 INITIALISATION ERROR CODES 54 8 2 1 CodE 90 EPRO...

Page 5: ...73 Copyright SIEMENS LTD All rights reserved For internal use only 8 4 8 CodE 21 Iheiz Iheiz maximum 69 8 4 9 CodE 22 Maximum Preparation Time 70 8 5 PCB LAYOUT DRAWINGS 71 8 5 1 Master card D915 71 8 5 2 Filament interface PCB D506 72 8 5 3 ADR and Collimator control PCB D508 73 ...

Page 6: ...n 110 190 240V single phase 15A socket For safety purposes 16A HRC fuses are provided which will blow when a current exceeding 16A sustains for its response time Ensure that the mains socket is properly earthed In case of fault if the kV tries to build beyond the safe limit of X ray tube the protection circuit blocks the HT In case of fault if the Filament current tries to increase beyond the safe...

Page 7: ...ier for counter balancing Lead is used inside the C arm profile for counter balancing Hence special precautions should be observed during handling these parts to avoid lead poisoning and contamination 4 If the Temperature of the single tank exceeds 65 C then the Temperature Sensor switch operates and D915 blocks the firing pulses to the inverter This overload protection will automatically again sw...

Page 8: ...of injury for operator Points of injury for patients Note The system shown above is with 9 II system The points of injury are identical for 6 II system 1 7 Maintenance All parts modules of this product must be tested inspected for performance and safety aspects every 12 months to ensure that the product functions properly and is safe for patients operating personnel and other persons Every 12 mont...

Page 9: ...spose it This product is governed by WEEE directive Please contact SIEMENS Customer Service for proper disposal 1 7 2 Radioprotection Material Lead is present in X ray tube assembly In the C arm profile In the Image intensifier and in Collimator Approx 10 kg As a precaution against lead poisoning avoid direct contact with lead 1 7 3 Transformer Oil Oil in X ray tube assembly approx 10 5 Ltr 1 7 4 ...

Page 10: ...d screw bolt should be replaced with a nickel plated screw bolt with same specification size material and tensile strength as that of the original screw bolt 2 3 Cleaning and Disinfecting The unit must always be switched OFF or disconnected before cleaning Use only water or a Luke warm mixture of a household cleaner diluted with water to clean the unit Do not use an abrasive or organic solvents or...

Page 11: ...some components of disinfectants are detrimental to health Their concentration in respiratory air must not exceed a legally determined limit We recommend that appropriate directions on use issued by the manufacture of these agents be strictly observed 2 4 Protecting the system from fluids Do not allow fluids to enter the system either during normal operation or during cleaning and disinfections as...

Page 12: ... 1 2 During operation Check for The radiation indicators for correct functioning All the audio visual indicators for correct functioning All the modes of operation proper functioning Proper positioning of the unit When moving the system remove any obstacles on the floor that may block the wheels Cable deflectors are provided The exposure indicator and audible signal during Radiography and during F...

Page 13: ...age Reversal Vertically e Memory Selection f Image Transfer Memory write Overwrite g Image rotation clockwise h Image rotation Counter Clockwise 2 6 Calibration Check 2 6 1 Control Voltages Voltage Measuring Point Range 5 V D915 X15 4 GND 4 9 to 5 2 V 15 V D915 X15 5 GND 13 5 to 16 5 V 15 V D915 X15 7 GND 13 5 to 16 5 V 15 V For Filament D506 X4 7 8 15 V 24 V For Filament D506 X4 6 8 24 V 12 V D50...

Page 14: ...ime and an audible indication by a Buzzer from the control The LED s on D915 light in the following sequence Select the one step Exposure release switch Internally First Press second press stages are activated This corresponds to Preparation Exposure stage with green LEDV22 Yellow LED V23 glowing respectively In case of error Red LED V24 on D915 lights and error code corresponding to the error is ...

Page 15: ... measurement 2 6 6 1 mAs meter Remove mAs link on D506 Insert mAs meter leads in the banana sockets mA and mA on D506 Set meter at DC mA 200mAs and in the mAs mode Set exposure parameters as 60kV 20mAs Release an exposure The reading should be within 5 of the selected value Repeat for exposure parameters 90kV 16mAs The actual tube current can be measured by setting the meter in mA mode Set the exp...

Page 16: ...e of the equipment process explained below 1 Short the live and neutral terminal at mains cable end 2 Select the range of Megger 500V DC 3 Connect the probes of Megger between earth and shorted live and neutral terminal 4 Switch ON the Megger and note down the value of insulation resistance when the value reading stabilises 5 The value should be greater than 10MΩ c Check the parts subject to wear ...

Page 17: ...reaches 150V DC 5 Switch on the unit again 6 Keep it on till the capacitor voltage reaches 250V 7 Repeat the above procedure for 5 times 8 Switch on the unit and after 9 Secs the US contactor picks up 9 The voltage across the capacitors should be around 300 350V DC 2 9 1 2 Gattering of Image Intensifier Keep the unit on in standby mode for 30 minutes before generating x rays 2 10 Checks prior to t...

Page 18: ...ons Multimobil 5C Siemens Ltd Med India Version 5 0 Page 17 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 3 Exposure Charts 3 1 For units with 230V input Exposure Chart for units with 230V input ...

Page 19: ...Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 18 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 3 2 For units with 110V input Exposure Chart for units with 110V input ...

Page 20: ...the µC through Analog port 7 During Standby the value of kVist read should be Zero kVist ratio 1 V 20kV 06 JR 0 JR is read by the µC through Analog port 1 During Standby the value of JR read should be Zero JR ratio 1 V 20mA 33 Main Inverter Short Circuit In standby mode if the Main Inverter Driver Cable is disconnected this error gets activated Exposure Error CodEs 11 Main Inverter Short Circuit T...

Page 21: ...U7 U8 5 1 Checking the line voltage fuses and LED s 5 1 1 Checking the line voltage Measure the supply voltage at site using the digital Multimeter Ensure that the supply conditions Voltage Should be between 99 121V for 110 V line connection or 170 264V for 230 V line connection Frequency Should be 50 or 60 Hz Mains Resistance Should be 0 36Ω max for 99 121V or 1 5Ω max for 170 265V Switch the Uni...

Page 22: ... Supply U4 6A Delayed Glass cartridge Motor Supply U5 6A Delayed Glass cartridge Motor Supply U6 6A Delayed Glass cartridge Charging resistor to capacitor bank U7 6A Delayed Glass cartridge SMPS supply SMPS 1 2 U8 6A Delayed Glass cartridge SMPS supply D982 D985 Note All Fuses are rated for 250V 5 1 2 2 Fuses on D506 Identification Rating Purpose F1 250 mA Delayed Glass Cartridge T1 transformer pr...

Page 23: ...4V for relay D 506 V25 Filament power supply 15 24 V Standby Mode D508 V11 5V for collimator Preparation Mode D915 V22 Preparation ON Exposure Mode D915 V23 Exposure ON Error D915 V24 Error Indication 5 2 Checking the Control Voltages When the unit is ON relays K2 on D506 is ON SMPS placed in the Inverter module gets supply Measure the voltages DC at X15 connector of D915 PCB Pin no Signal name In...

Page 24: ... changing the pot P1 on D506 release the exposure switch completely and after adjusting the pot wait for 10 sec to get exact changed reading on display 5 2 2 Checking the Intermediate circuit voltage Depending on the supply voltage a value between 250 to 350Vdc must be measured with the Digital Multimeter on Capacitors on the inverter module 5 3 Checking for Exposure parameters 5 3 1 Checking the ...

Page 25: ... 3 Filament current measurement Turn the Unit OFF Connect oscilloscope to D915 TP IH Turn the Unit ON After approx 3 seconds the Stand by filament current starts should be 1 5V 0 2V Select radiography mode Select the exposure release switch for 1 sec to enter into preparation Observe the change in voltage level from 1 5 V 0 2V to Preheat value 2 8V 0 3 V Note Preheat value is parameter kV mAs spec...

Page 26: ...osure Observe the voltage on C R O with the scale corresponding to 1V 20mA The readings should be within 5 of the value as per the exposure chart 5 3 4 3 Checking the kV and tube current Connect oscilloscope to D915 TP KV D915 TP JR Turn the unit ON Select radiography mode Set any parameter combination Trigger an exposure Observe the voltage on CRO 1V 20kV 1V 20mA for selected kV mAs The readings ...

Page 27: ... total darkness and 8 0 V DC to bright image This signal is sent to PCB D508 which generates a proportional signal to be applied as the Automatic Dose Regulation ADR signal to the analog port of microcontroller in PCB D915 The circuit on the PCB D508 consists of level shifter followed by unity gain buffer in inverting mode using TLO82 The output of this circuit is a signal proportional to the dark...

Page 28: ... of any damage to collimator the collimator has to be replaced completely Loosen the connector on the collimator cable and disconnect it Remove Temp Sensor wires Remove collimator by loosening alignment studs Fix the new collimator fasten it with 4x alignment studs Connect the Temp Sensor cables collimator cable connector Align the beam to the centre of the Image intensifier by centring the collim...

Page 29: ... SIEMENS LTD All rights reserved For internal use only adjusted for maximum cassette size 10 x 12 by using VR3 which results in a larger radiation field during radiography The calibration of the Unit is Specific to the Single Tank Re calibrate the unit when the single tank is replaced CAUTION ...

Page 30: ...rmits a memory image and a live image to be switched for display on TV monitor The playback image from one of the four frame memories can be output to a dedicated output terminal for continuous observation on another monitor These images can be compared against live images freeze images and playback images Image rotation function is incorporated using the slip ring mechanism in which motor rotates...

Page 31: ...l Video signal LIH image Memory image Monitor is connected to this terminal REMOTE CONTROL 1 36 pin D57 DDK Input output of the one signal group for external control of camera REMOTE CONTROL 2 D sub25 Input output of the other signal group for external control of camera HD OUT BNC Horizontal drive pulse output for external devices VD OUT BNC Vertical drive pulse output for external devices AC100 2...

Page 32: ...in Black white reversal Outputs LIVE image in negative when the function is ON or during external ON signal input when the function is in EXT mode The function ON Ext is selectable internally Shading correction SAWtooth and PARAbolic for both H and V Correctable more than 0 2V under γ 0 45 and normal gain Circle blanking Diameter is adjustable from 90 of useful image screen height to useful image ...

Page 33: ...DC offset of ABC can be adjusted internally Adjustable range is 8 to 8V including offset and the output impedance is 75ohms The way of sampling signal detection is the same that of the AGC Character display Displays the identification character of video signal output on the monitor and confirmation for recording into memory VIDEO OUT 1 and 2 Identification character for outputs LIH MEM for the sta...

Page 34: ...image is cleared Frame storage function Frame memory in addition to memory for LIH is used for this function This function allows one frame of the video signal to be recorded at any timing and then to be played back continually to obtain a static image Unlike the LIH images in this memory can be accessed as many times as required images are output to VIDEO OUT 1 or 2 by the output switch Recursive...

Page 44: ...pection Sheet to check whether or not the system sensitivity has decreased compared with that at the time of installation If the sensitivity has decreased check whether or not there is dust on the CCD surface If there is dust on the CCD surface wipe off the dust with a soft cloth If there is not dust on the CCD surface the cause is due to the decrease of the II brightness Compensate for low bright...

Page 45: ...re adjusted and pinned in the factory upon dispatch of the unit During the adjustment of the brakes at site the service engineer has to remove the tubular pin and do the required adjustment and after the adjustment the tubular pin has to be fixed in If the same is not done the adjustments may slip off 7 1 1 1 Adjustment for the orbital C Arm movement brake Procedure for the adjustment of brake 1 T...

Page 46: ...ce bush Loosen the four grub screws of the distance bush and rotate for tightening the distance bush Check the movement under braked and unbraked condition Once the brake is set i e Maximum tight or locked position fix the grub screws back Fix the handle and dowel it Fit the cap 7 1 1 4 Adjustment for the Angulation C Arm movement brake 1 Remove the cap complete by pushing the buffer washer back a...

Page 47: ...e grub screws and lock the bearing pins 5 Fit the cover complete back to in the place 7 1 3 V BELT The V Belt is used for the transfer of power from the motor pulley to the main pulley If the tension in the belt is not sufficient or if it is loose there will be loss of power due to slip resulting in noisy up down motion wobbling of the belt rubbing sound jerks etc which can cause inconvenience to ...

Page 48: ...n movement Hence the worn out belt may cause troubles such as slip Causing jerky movement noise and can also fail rupture and make the machine idle Hence it is the responsibility of the service engineer to keep a watch on these activities and change the belt from time to time 7 2 2 Bearings Bearings generally doesn t get worn out under clinical conditions Only possibility that cannot be ruled out ...

Page 49: ...s of the brake shoes wear out after a few years of usage resulting in loss of braking efficiency In case of such incidence the brake liners along with the brake shoes need to be replaced 7 3 Trouble shooting and rectification Listed below are the general troubles encountered on site and their remedies Sr No Troubles Causes Remedies 1 Braking inefficiency Worn out brake liners 1 Adjust the brakes t...

Page 50: ...hether the V Belt is in good condition and is not broken 3 Try to rotate the main pulley manually and see whether it is free and not getting stuck Power on the motor and give a few jerks Now try to move the column up and down See whether you can get a smooth movement If the movement is fine you can stop at this stage The cause of problem could have been some fine rust or dirt particles which might...

Page 51: ...Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 50 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 Appendix I 8 1 Specific Error Code Handling 8 1 1 Unit not turning ON ...

Page 52: ...L SWITCH FUNCTIONED AT 65 C GO TO RADIOGRAPHY MODE SELECT HAND HELD RAD SWITCH GO TO FLUORO MODE SELECT FOOT SWITCH AND OR HAND HELD FLUORO SWITCH IS FILAMENT BOOSTED KV GENERATED FLUOROSCOPY ERRORS IS X RAY NOT PRESENT IN FLUORO RADIOGRAPHIC ERRORS IS ERROR DISPLAYED CONFIRM SWITCH FUNCTIONING UPTO MICROCONTROLLER No MEASURE DOSE AND CONFIRM X RAY GENERATED A Yes Yes No Yes No No Yes No Yes No Ye...

Page 53: ...ht SIEMENS LTD All rights reserved For internal use only No X ray Contd DOES ZB HK DL_EXT SIGNAL ON D915 CHANGES IS REQUIRED VOLTAGE FOR SWITCHES THERE CHANGE D915 CHANGE HAND HELD FLUORO RADIOGRPHIC SWITCH OR FOOTSWITCH CHANGE X10 CABLE OR D506 PCB OR R CORE TRANSFORMER STOP A No Yes No Yes ...

Page 55: ...or internal use only 8 2 Initialisation Error codes 8 2 1 CodE 90 EPROM CHECKSUM FAILURE 8 2 2 CodE 96 KV SOLL FAILURE 8 2 3 CodE 97 mA FAILURE 8 2 4 CodE 99 LAST RESET BY WATCH DOG TIMER START CONFIRM 230V SUPPLY SWITCH ON THE UNIT IS ERROR CONTINUES REPLACE D915 PCB STOP No YES IS X15 CONNECTOR SUPPLY OK REPLACE SMPS1 NO Yes ...

Page 56: ...age 55 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 3 Standby Error codes 8 3 1 CodE 02 15 V Supply Error START REMOVE CONNECOR X15 ON D915 SWITCH ON THE UNIT MEASURE 15 V ON X15 CONNECTOR IS 15V THERE YES REPLACE D915 PCB NO REPLACE SMPS1 STOP ...

Page 57: ...Service Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 56 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 3 2 CodE 03 04 Iheiz Istby Iheiz Istby ...

Page 62: ...Service Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 61 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 3 5 CodE 33 Main Inverter Short Circuit ...

Page 63: ...e Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 62 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 4 EXPOSURE ERROR CODES 8 4 1 CodE 11 Main Inverter Short Circuit ...

Page 65: ...ice Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 64 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 4 3 CodE 13 Iheiz Imax OR JR Jrmax SET CAL TO 1 2 TO 1 4 kHz ...

Page 68: ...Service Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 67 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 4 6 CodE 17 Exposure terminated by Backup Timer ...

Page 69: ...Service Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 68 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 4 7 CodE 18 Premature termination of Exposure ...

Page 71: ...MENS LTD All rights reserved For internal use only 8 4 9 CodE 22 Maximum Preparation Time START TRIGGER A RADIOGRAPHY IS CODE 22 DISPLAYED RESET THE ERROR MONITOR THE J36 15 SIGNAL IS SIGNAL LEVEL CHANGES CONFIRM THE SWITCH WIRING OR CHANGE HAND HELD EXPOSURE SWITCH STOP Yes No Yes No CHANGE D915 ...

Page 72: ...Service Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 71 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 5 PCB Layout Drawings 8 5 1 Master card D915 ...

Page 74: ...Service Instructions Multimobil 5C Siemens Ltd Med India Version 5 0 Page 73 of 73 Copyright SIEMENS LTD All rights reserved For internal use only 8 5 3 ADR and Collimator control PCB D508 ...

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