Related Manuals for gbo ULTRATHERM 908i
Summary of Contents for gbo ULTRATHERM 908i
- Page 1 Short Wave Therapy Unit ULTRATHERM 908i Service Manual gbo Medizintechnik AG 2004 Version 1.2...
- Page 2 ULTRATHERM 908i The gbo Medizintechnik AG has taken care in preparation of this service manual, but makes no expressed or implied warranty of 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) without the prior written permission of the gbo Medizintechnik AG.
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Page 3: Table Of Contents
4.4.2.1. „MODE“ and „APPLICATOR“ keys 4.4.2.2. „+“ and „-“ keys, „MINUTES“ indicator 4.4.2.3. Power selector „INTENSITY“, indicators „WATTS“ and „TUNING“ 4.4.2.4. Emergency-off function 4.4.2.5. RESET key 4.5. Tuning 4.6. Check of the operating voltages and currents gbo Medizintechnik AG 2004 Version 1.2... - Page 4 5.2. Repair instructions for the control computer (A400) 5.2.1. Indication of the error conditions 5.2.2. Description of the control computer signals 5.3. Power supply (A100) 5.4. Output circuit (A300) 5.5. Harmonic filter (A500) gbo Medizintechnik AG 2004 Version 1.2...
- Page 5 ULTRATHERM 908i 6. DISASSEMBLY/ASSEMBLY FLOW CHART 7. ORDERING INFORMATION 8. PARTS LIST 9. WIRING DIAGRAMMS CORRECTION SHEET gbo Medizintechnik AG 2004 Version 1.2...
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Page 6: Overview
Chapter 6 explains single steps to exchange a part. Chapter 7 gives ordering information. Chapter 8 gives a list of parts. Chapter 9 contains the pictures and the wiring diagramms of the unit. gbo Medizintechnik AG 2004 Version 1.2... -
Page 7: General Information
1. General Information 1.1. Purpose The ULTRATHERM 908i is a high performance short wave therapy unit for high frequencey heat therapy that operates at the well proved frequency of 27,12 Mhz (wave lengh 11 m). It enables the classical therapy in capacitor-field and electromagnetic coil fields in both the continuous and the pulsed mode of oparartion and, therfore, it is suited for all heat therapy treatments in clinic as well as practice. -
Page 8: Short User Manual
Key „Pulsed mode of operation“ 70 Hz/2 ms with LED Key „Pulsed mode of operation“ 350 Hz/0.4 ms with LED Key „Coil applicator“ MINODE ∅ 8 cm Key „Coil applicator“ MONODE ∅ 14 cm gbo Medizintechnik AG 2004 Version 1.2... -
Page 9: Operation Direction
• When an error is displayed (except for FE 0) press RESET button (2) and readjust if required. • The entire therapy unit is switched off by actuating swich (1) again. For more imformation please look in the User Manual of the ULTRATHERM 908i. gbo Medizintechnik AG 2004... -
Page 10: Technical Data
2 ms/0,4 ms Dimensions 85 x 38 x 39 cm³ (HxWxD) Weight 45 kg Safety test DIN VDE 0750 Part 1 DIN VDE 0750 Part 204 DIN VDE 0871 MedGV - group 3 gbo Medizintechnik AG 2004 Version 1.2... -
Page 11: Electrical And Functional Descriptions
Avoid any dismounting of the air-core chokes L501/L502. The cover on this subassembly is absolutely necessary to maintain the low RF interference values required by law. gbo Medizintechnik AG 2004 Version 1.2... -
Page 12: Output Circuit - Subassembly A300
The individual LEDs VD402 to VD410 have the following meaning: VD402 signals the adjustment of the „DIPLODE“ applicator. VD403 signals the adjustment of the Medium coil-field „MONODE“ applicator. VD404 signals the adjustment of the Small coil-field „MINODE“ applicator. gbo Medizintechnik AG 2004 Version 1.2... - Page 13 U , whose amounts are used for tuning the output circuit by means of M301, are connected to P0.0 and P0.1. At X401.3 there applies a signal that is proportional to the gbo Medizintechnik AG 2004 Version 1.2...
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Page 14: Description Of The Overall Wiring Diagram
3.2. Description of the Overall Wiring Diagram The power supply of the ULTRATHERM 908i is realized by the mains transformer T001 and the A100 subassembly that is connected with the 115 V or 230 V, 50 Hz/60 Hz, mains via mains input A001, RF interference protection filter A002 and mains switch S001. -
Page 15: Test
• Moving-iron instrument (0.5 A,10 A) • Oscilloscope (50 Mhz) • Frequency meter (50 Mhz) • Resistance phantom circuit • Lamp phantom • Thermometer (50 °C) • Diverse measuring lines and coaxial transitions gbo Medizintechnik AG 2004 Version 1.2... -
Page 16: Pretest
• Mains-voltage indicator in S001 shall be lit green (only with the 230 V version). • Treatment time „MINUTES“ (VD411/412) indicates „0“. • Power indicator „WATTS“ (VD413 to 415) indicates „0“. • All other indicators are inactive. gbo Medizintechnik AG 2004 Version 1.2... -
Page 17: Modes Of Operation
• Repeat this prosedure in the CW mode of operation for all applicators where the initial values after the tuning operation (9 W each) as well as the end values are to be checked: coil-field electrode, small 30 W coil-field electrode, medium 90 W capacitor-field electrode, small 21 W gbo Medizintechnik AG 2004 Version 1.2... -
Page 18: Emergency-Off Function
„LINEARITY FACTOR“ according to the value on the probe label, „CAL FACTOR“ = 1, „RANGE“ = 0, „AVERAGE“ = 7, „DUTY CYCLE“ = 100 %. • Connect the power meter to the (-40)-dB output of the test aerial. gbo Medizintechnik AG 2004 Version 1.2... -
Page 19: Check Of The Operating Voltages And Currents
+45 ±2 Mains current consumption: in A in A at 230 Va.c./50 Hz max. about 0.5 A max. about 3.0 A at 115 Va.c./50 Hz max. about 1.0 A max. about 5.8 A gbo Medizintechnik AG 2004 Version 1.2... -
Page 20: Check Of Generator Frequency And Pulse Parameters
• Connect the test aerial including the thermal power meter to X004/X005. • Instead of test aerial and thermal power meter the precision resistor of 50 Ω, multimeter and oscilloscope can be used. However, with the pulsed modes now the power can only be gbo Medizintechnik AG 2004 Version 1.2... -
Page 21: Capacitor-Field Applicator
• As additional control the assigned RF indicator can be used by positioning in front of or between the electrodes. In this case, the active surfaces of the capacitor-field electrodes are put together. gbo Medizintechnik AG 2004 Version 1.2... -
Page 22: Check Of The Internal Error Recognition Circuits
• The continuous operation starts with setting the maximum possible output power. • After the termination of the treatment time separate the unit from the mains for about 1 min. • Select the CW mode and the same settings as in the first cycle. gbo Medizintechnik AG 2004 Version 1.2... -
Page 23: Final Test
• The test is to be performed in accordance with DIN VDE 0750, Part 1, and DIN VDE 0750, Part 204. • Connect the unit to be tested to the earthing-conductor testing device. gbo Medizintechnik AG 2004 Version 1.2... -
Page 24: Measurement Of The Mains Current Consumption
4.11.5. Check of the power values • Measure the power values according to clauses 4.8.1. and 4.8.2. and report the values. 4.11.6. Operation check • Perform the operation check according to clause 4.4. gbo Medizintechnik AG 2004 Version 1.2... -
Page 25: Service Instructions
-8.2 V measured against X205. • Voltage of the level control A voltage of about 0 V appears at the basis of V210, thus, the level control is blocked. • Analogous computer gbo Medizintechnik AG 2004 Version 1.2... -
Page 26: General Information On The Power Loop
V213 = 13 V to 17 V = 8 V, V = -6 V) • Voltage at the collector of V213 = 100 V to 115 V = 115 V, V = 0 V) gbo Medizintechnik AG 2004 Version 1.2... -
Page 27: Power And Mismatching Meter Lfm
5.1.3.4. Adding amplifier It includes: R213, R216, N201/4, R257 up to the plug connector X212. The sum of the voltages measured at X217 and X218 can be determined at X212, however, the sign is changed. gbo Medizintechnik AG 2004 Version 1.2... -
Page 28: Subtracting Amplifier
X208. With a good matching to X222 normally voltages of about +3 V to +9 V can be measured at pin 1 of N201/1 but the value depends on the RF power. gbo Medizintechnik AG 2004 Version 1.2... -
Page 29: Cable Voltage Monitoring Circuit
29 about 36 about 41 about 48 Be careful when working at the power supply. With full output power a direct short-circuit between X205 and earth can damage the integrated circuit N203! gbo Medizintechnik AG 2004 Version 1.2... -
Page 30: Oscillator
U at N201/4, pin 14 = +3.7 V U at N201/1, pin 1 = +3.5 V U at N201/2, pin 7 = +14.3 V U at the basis of V210 = 3.1 V gbo Medizintechnik AG 2004 Version 1.2... -
Page 31: Repair Instructions For The Control Computer (A400)
„0“ at the treatment time indicator. Shows a Reset actuation by integrated circuit D401. An error message can only be indicated within the framework of the operation of microprocessor D402. gbo Medizintechnik AG 2004 Version 1.2... -
Page 32: Description Of The Control Computer Signals
5 V, in case of emergency-off switch actuation 0.6 V. R444 1.2 V, in case of emergency-off switch actuation 5 V. T407/emitter 0 V, in case of emergency-off switch actuation -15 V, relay K001 must switch over. gbo Medizintechnik AG 2004 Version 1.2... -
Page 33: Power Supply (A100)
In any case, do not replace components of this subassembly because this would negatively affect the adjustment which can only be performed by the manufacturer. gbo Medizintechnik AG 2004 Version 1.2... -
Page 34: Disassembly/Assembly Flow Chart
(17) exchange remove 2 mains switch S001 Thyristor V001 (19) exchange replace rectifier G001 (21) harmonic filter A500 replace (16) replace 2 transformer T001 4 power generator A200 exchange (22) replace gbo Medizintechnik AG 2004 Version 1.2... -
Page 35: Ordering Information
18 cm x 27 cm with cable and plug 4 Felt spacer, 19 cm x 29 cm 19-53-298 Q 3236 2 Cloth coating 23-95-622 Q 3236 2 Rubber bands, 135 cm 45-38-963 EH 725 4 Fastening buttons 22-74-801 Q 1320 gbo Medizintechnik AG 2004 Version 1.2... - Page 36 23-51-245 Q 4562 Clamp, big (for cable with lead protection) 19-53-363 Q 4514 Indicator discharge tube 22-53-722 Q 3215 User Manual for the ULTRATHERM 908i in English 011-7-0324 011-7-0323 User Manual for the ULTRATHERM 908i in German gbo Medizintechnik AG 2004...
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Page 37: Parts List
007-2-2004 Transformer (230/115 V) T001 Emergency-off switch S002 Emergency-off, pullcord Emergency-off, pullcord ball O-ring 86x3, oil resistent (for M301-C302) Harmonic filter A500 Patient plug X004/X005 Control computer A400 Power supply A100 Thyristor V001 gbo Medizintechnik AG 2004 Version 1.2... -
Page 38: Wiring Diagramms
ULTRATHERM 908i 9. Wiring diagramms Picture Denotation: Article number: Version A Explosion diagramm ULTRATHERM 908i HF-part ULTRATHERM 908i Overall Wiring Diagramm ULTRATHERM 908i 4 a. 5 A200 power generator A400 control computer Layout A200 power generator Layout A300 output circuit... -
Page 39: Correction Sheet
ULTRATHERM 908i 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 right text Address: Artikel-Nr. 001-9-0086 gbo Medizintechnik AG 2004 Version 1.2...
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