gbo ULTRATHERM 908i Service Manual Download Page 34

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ULTRATHERM 908i



gbo Medizintechnik AG 2004

Version 1.2

6. Disassembly/assembly flow chart

(look also picture 1 and 2)

back panel (1) open

control computer A400

exchange

interference filter A002

replace

mains switch S001

exchange

transformer T001

exchange

power supply A100

replace

partient plug (10)

remove

back panel (2) open

RF-panel (5) remove

output circuit A300

exchange

power generator A200

(22) replace

capacitor C001 (18)

exchange

rectifier G001 (21)

replace

Thyristor V001 (19)

replace

fan M001 (23)

exchange

harmonic filter case (17)

remove

harmonic filter A500

(16) replace

RF-back panel (11)

remove

Summary of Contents for ULTRATHERM 908i

Page 1: ...gbo Medizintechnik AG 2004 Version 1 2 Short Wave Therapy Unit ULTRATHERM 908i Service Manual...

Page 2: ...any kind and assume no responsibility for errors or omissions All rights reserved No part of this service manual may be reproduced in any form or by any means electronic mechanical or otherwise withou...

Page 3: ...put circuit subassembly A300 12 3 1 5 Control computer subassembly A400 12 3 2 Description of the Overall Wiring Diagram 14 4 TEST 15 4 1 Safety instructions 15 4 2 Testing devices and measuring instr...

Page 4: ...heck of the power values 24 4 11 6 Operation check 24 5 SERVICE INSTRUCTIONS 25 5 1 Function check of the power generator A200 25 5 1 1 Check of the supply voltages 25 5 1 2 Readiness for operation of...

Page 5: ...ULTRATHERM 908i 5 gbo Medizintechnik AG 2004 Version 1 2 6 DISASSEMBLY ASSEMBLY FLOW CHART 34 7 ORDERING INFORMATION 35 8 PARTS LIST 37 9 WIRING DIAGRAMMS 38 CORRECTION SHEET 39...

Page 6: ...bassemblys and the overall wiring diagramm Chapter 4 give some safety instructions during the service and describes the test of the whole unit Chapter 5 includes the service instructions and informs a...

Page 7: ...ve The heat endogenically generated by this therapy unit induces a whole range of physiological processes which for example spasmodically influence the muscular system tendons and other connective tis...

Page 8: ...wer switch with light indicator 2 RESET key 3 Key Continuous mode of operation with LED 4 Key Pulsed mode of operation 70 Hz 2 ms with LED 5 Key Pulsed mode of operation 350 Hz 0 4 ms with LED 6 Key C...

Page 9: ...cator s to the therapy unit Attach the applicator s to the patient Turn on the therapy unit with switch 1 Select the mode of operation buttons 3 4 5 Select the mode of the applicator s buttens 6 to 11...

Page 10: ...tive system Class I Power consumption maximum Stand by oparation about 700 VA about 100 VA Frequency 27 12 MHz 0 6 RF output power at 50 continuous mode Pulsed mode 200 W 30 W Power equivalent 400 W P...

Page 11: ...le an exact adjustment of the output power And the third section contains the control circuit of the operating voltage of the amplifier Any repair work of this subassembly shall only be performed by t...

Page 12: ...e connected After switchingon the watch dog circuit D401 generates a reset signal and initiates a defined start of the internal program But the generation of the reset signal is also possible by means...

Page 13: ...11 shows the ten s place of the minutes of treatment time VD412 shows the one s place of the minutes of treatment time VD413 shows the hundred s place of the unit s output power VD414 shows the ten s...

Page 14: ...endence on the generator output power This is synchronuously performed to the mains frequency where the 26 V voltage of T001 between X205 and X203 is used The regulated DC voltage between X205 and X20...

Page 15: ...plicators working have to deposit all metal objects such as watches jewelry keys metal rimmed eyeglasses hearing aids electronic equipment etc 4 2 Testing devices and measuring instruments High voltag...

Page 16: ...dim 5 mm x 20 mm 115 V version FST 6 26 A slow glass pipe dim 6 3 mm x 32 mm F003 mains transformer T001 FST 50 mA slow glass pipe dim 5 mm x 20 mm F1 power supply A100 FST 1 6 A slow glass pipe dim 6...

Page 17: ...ctively Check the indication of the power ranges 3 W to 30 W in 3 W steps 30 W to 80 W in 5 W steps 80 W to 200 W in 10 W steps as well as the power range limits in dependence on the mode of operation...

Page 18: ...left The acoustic signal terminates and the unit changes to the stand by mode Relay K001 must be active 4 4 2 5 RESET key Adjust any treatment time value Press RESET key S409 After this the unit must...

Page 19: ...ctor to 0 4 6 Check of the operating voltages and currents Set the mains power supply to rated mains voltage constant The measurement of the mains current consumption is performed by means of the movi...

Page 20: ...utput of the test aerial Select the 70 Hz pulsed mode and the treatment time Select the output power and wait for the tuning run Measure the pulse duration tp setpoint 1 8 ms to 2 2 ms and frequency f...

Page 21: ...0 3 Pulsed mode 350 Hz 3 1 30 3 Remove the test aerial from the unit to be tested 4 8 2 Capacitor field applicator Connect the resistance phantom circuit to X004 X005 Set the Electrode to skin distanc...

Page 22: ...us operation Close the RF subassembly Mount the face and in doing so observe that the earthing conductor is correctly connected Connect the lamp phantom to output X004 X005 The continuous operation is...

Page 23: ...nd by applying the test voltage between this short circuit jumper and the earthing contact of the power cord plug The applicators are tested with a voltage of 4 kV Record the test result 4 11 2 Measur...

Page 24: ...ximum measurement value Perform the earthing conductor test according to DIN 57 751 or VDE 0751 respectively Record the measurement values 4 11 4 Measurement of the mains current consumption Measure t...

Page 25: ...ges Check 15 V X206 and 15 V X209 against earth The secondary voltages of the mains transformer under no load conditions i e without any RF power output about 45 VRMS between X002 1 and X002 1 about 2...

Page 26: ...L213 V212 C238 C239 L216 V213 L219 L220 C263 C264 L221 L222 L226 C273 C274 C275 to X219 All stages operate in B point mode without any zero signal current The following voltage values can be used as r...

Page 27: ...red at eyelets X217 and X218 Their range of values is between 0 and 5 V The voltage at X217 is always more negative than that at X218 or equal in the limit case The allocation is as follows Correct ma...

Page 28: ...Apply 5 V at X215 connect X214 to earth set R204 to 0 V at X216 Apply 5 V at X214 connect X215 to earth set R203 to 0 V at X216 Repeat the adjustment one times more A 4 5 V flat battery can also be u...

Page 29: ...interconnection It includes V201 V202 R229 Via R229 a current is fed into the basis of V210 trying to increase the level When the RF voltage level is sufficient one of the control systems becomes act...

Page 30: ...When the coils L226 or L227 are bend the resistors R250 and R251 can burn off An auxiliary matching is possible by temporarily clamping two LEDs each which are connected in anti parallel to each othe...

Page 31: ...measured though the power selector is on zero FE3 The power measured after the matching operation indication A exceeds the permissible limit value FE4 In pulsed operation an inadmissible high power ha...

Page 32: ...0 W pulses low active duration about 410 s period about 2 8 ms CW mode 200 W low level N401B 9 Stand by mode about 0 5 V 70 Hz pulsed mode 30 W pulses high active duration about 2 ms period about 14 m...

Page 33: ...does not eliminate the trouble replace the subassembly WARNING There are several accessible components on mains potential ATTENTION The earthing conductor is screwed on and thus the contact is not ne...

Page 34: ...ns switch S001 exchange 2 transformer T001 exchange 2 power supply A100 replace 6 partient plug 10 remove 6 back panel 2 open 3 RF panel 5 remove 6 output circuit A300 exchange 4 power generator A200...

Page 35: ...pplicator connection cables 120 cm with lead protection 19 89 870 Q 4824 1 Cable clampe big for cable with lead protection 19 53 363 Q 4514 Plate Applicator set 1 consisting of 2 Soft rubber plate app...

Page 36: ...licator connection cable with lead protection Length 120 cm 19 89 870 Q 4824 Arm regular 011 1 0156 Flex arm on the left 011 1 0169 Flex arm on the right 011 1 0170 Cable holder for cable without lead...

Page 37: ...R003 Stepping motor M301 Capacitor 10000 F 63V C001 Capacitor FC C004 007 u C009 C015 Power generator A200 Power relay K001 Castor 008 1 0099 Castor with brake 008 1 0100 Precision resistor 50 ohm Ma...

Page 38: ...mm ULTRATHERM 908i 1 2 HF part ULTRATHERM 908i 1 3 Overall Wiring Diagramm ULTRATHERM 908i 1 4 a 5 A200 power generator 1 6 A400 control computer 1 7 Layout A200 power generator 1 8 Layout A300 output...

Page 39: ...G 2004 Version 1 2 Correction sheet gbo Medizintechnik AG Dokumentation Kleiststr 6 D 64668 Rimbach Germany Please revise the following errors and stimulation to the document page line wrong text righ...

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