Phyaction GUIDANCE-C - 1 Table of Contents

1. TABLE OF CONTENTS
1. TABLE OF CONTENTS ................................................................................................ 2
2.
GENERAL INFORMATION ......................................................................................... 5
2.1 Introduction. ............................................................................................................................5
2.2 Information. .............................................................................................................................5
2.3 Safety aspects. .........................................................................................................................5
2.3.1 Electrical safety.............................................................................................................5
2.3.2 Explosion safety............................................................................................................6
2.3.3 Operational safety. ........................................................................................................6
2.3.4 Use of the appliance......................................................................................................6
2.3.5 Product documentation. ................................................................................................6
2.3.6 Radio interference suppression and electromagnetic compatibility..............................6
2.3.7 Medical device directive (MDD) ..................................................................................6
2.4 Installation. ..............................................................................................................................7
2.4.1 Incoming inspection......................................................................................................7
2.4.2 Mains voltage................................................................................................................7
2.4.3 Functional test...............................................................................................................7
2.4.4 Selecting the operating language. .................................................................................7
2.4.5 Location and transportation. .........................................................................................7
3.
DESCRIPTION OF CONTROLS AND CONNECTORS. ............................................ 8
3.1.1 Output connectors and control keys ( drawing unit on last page of service manual). ..8
3.2 Display indication overview....................................................................................................9
3.3 Technical specifications.........................................................................................................10
3.4 Different symbols. .................................................................................................................10
3.4.1 Symbols on the front of the Guidance E/C .................................................................10
3.4.2 Symbols on the right side of the Guidance E/C..........................................................11
3.4.3 Symbols on the left side of the Guidance E/C ............................................................11
3.4.4 Symbols on the back of the Guidance E/C .................................................................11
3.4.5 General symbols .........................................................................................................11
3.4.6 Symbols current groups ..............................................................................................11
3.4.7 Symbols currents ........................................................................................................12
3.4.8 Parameter symbols......................................................................................................12
4. UNIT SELF TEST. ....................................................................................................... 13
5.
CIRCUIT DESCRIPTION............................................................................................ 14
5.1 Main PCB (ELUS004-L100).................................................................................................14
5.1.1 Power supply. .............................................................................................................14
5.1.2 Micro-controller Circuits. ...........................................................................................15
5.1.3 Safety control circuits. ................................................................................................16
5.1.4 Signal processing circuits. ..........................................................................................17
5.1.5 Stimulation circuits.....................................................................................................17
5.1.6 Current measuring circuits..........................................................................................19
5.2 Output circuits. ......................................................................................................................19
5.3 Console circuits. ....................................................................................................................20
5.4 Ultrasound circuits (only for Guidance C) ............................................................................21
5.4.1 PLL .............................................................................................................................21
5.4.2 Voltage controller. ......................................................................................................21
5.4.3 Power stage.................................................................................................................21
5.4.4 Impedance matching ...................................................................................................22
5.5 RS 232 communication..........................................................................................................22
Phyaction Guidance E/C – service manual version 0.5 Page 2