Service manual

- alsa apparecchi medicali s.r.l. -
Pag. 1
INDEX
INSTRUMENTS REQUIRED ................................................................................................................ 2
INTRODUCTION ...................................................................................................................................... 2
CONTROL OF SUPPLY SECTION (LOW VOLTAGES) ............................................................. 5
CONTROL OF SUPPLY SECTION (VARIABLE VOLTAGE) ..................................................... 5
Ramp signal control.....................................................................................................................................5
Calibration of values of the variable voltage (minimum and maximum)....................................................5
Thermal protection control...........................................................................................................................7
CONTROL OF THE REFERENCE VOLTAGES FOR THE A/D CONVERTERS ................ 7
CONTROL OF THE LOCAL OSCILLATOR AND OF THE DRIVING SIGNALS .................. 7
ATTENUATION OF PULSE WIDTH (IN THE SPRAY AND FULGURATION
FUNCTIONS) ............................................................................................................................................. 8
CALIBRATION OF “POWER READING SECTION” ..................................................................... 9
Analog Multiplier, Calibration of the offset of the "X" inputs.......................................................................9
Analog Multiplier, Calibration of the offset of the "Y" inputs.......................................................................9
PWRFM signal, Calibration of the output offset .......................................................................................10
IRFMB signal, Calibration of the output offset...........................................................................................10
CONTROL OF SIGNALS FOR THE CORRECT OUTPUT POWER ..................................... 10
Output signal, control of the average modulation value............................................................................10
Control of the signal proportional to the monopolar output power ..........................................................11
Control of the signal proportional to the monopolar and bipolar output current......................................11
Control of monopolar output power..........................................................................................................11
Calibration of the limitation of the maximum output current (only models 400 and 250) .........................11
Calibration of the maximum output peak voltage......................................................................................11
Calibration of the maximum monopolar output current ( function per function) .......................................12
Control of bipolar output power ...............................................................................................................12
Calibration of the maximum bipolar output current ( function per function) .............................................13
Re-enabling of the standard EPROM......................................................................................................13
Control of the neutral plate alarm circuit ( REM type) ..............................................................................13
CONTROL OF HF LEAKAGE CURRENT ...................................................................................... 14
WIRING DIAGRAMS, ARRANGEMENT OF COMPONENTS AND LIST OF MATERIALS ......................... a
Block diagram..............................................................................................................................................a
801301 – Power Supply Board....................................................................................................................b
801302 – R.F.Main Board ...........................................................................................................................c
801303 – Microcontroller Board ..................................................................................................................d
801304 – R.F. Driver Board ........................................................................................................................e
801305 – R.F. Power Board.........................................................................................................................f
801306 – Power Reader Board (1) .............................................................................................................g
801307 – Power Reader Board (2) .............................................................................................................h
801308 – Double Handle & Neutral Plate Control Board.............................................................................i
801309 – Double Switch Handle Board .......................................................................................................j
801310 – Panel Board (400mcds – 250mcds)............................................................................................k
801326 – Panel Board (350mcds – 200mcds)............................................................................................l
UNITS (INTERNAL DETAILS – ELECTRONIC BOARDS, SOCKETS, SWITCHES, ETC.).....................m
WIRINGS CONNECTIONS.........................................................................................................................n