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Fault Symptom

Possible Fault(s)

Control Panel inoperative

– Windows 95 does not recognise DSP assembly
– Applications software corrupted
– Control panel has become disconnected
– Poor connections via connections box
– Control panel is faulty
– DSP assembly faulty

Headbox controls do not work

– Headbox has become reset

No patient signals displayed

– Windows 95 does not recognise DSP assembly
– Applications software corrupted
– Headbox faulty (try with Amp Cal signal)
– Headbox lead faulty
– DSP assembly faulty

No Amp Cal signal displayed

– Applications software corrupted
– Headbox faulty (try with patient signal)
– Headbox lead faulty
– DSP assembly faulty

Unable to trigger signals

– Applications software corrupted
– Control panel faulty (try triggering using headbox controls)
_ Poor connections via connections box
– Headbox faulty (try triggering using control panel controls)
– DSP assembly faulty

No audio signal to loudspeaker

– Applications software corrupted
– Loudspeaker disconnected or faulty (try another loudspeaker)
– Control panel faulty
– DSP assembly faulty

No EMG Stimulus output

– Windows 95 does not recognise DSP assembly
– Applications software corrupted
– EMG Stimulus circuit in control panel or stim probe faulty
– Tower Internal cables, connections via I/O board and

connections box faulty

– DSP assembly faulty

Displayed EMG stimulus level
does not change as control adjusted

– Applications software corrupted
– Control board faulty (only applies to EMG1 stimulator)
– Stimulus probe faulty
– DSP assembly faulty

Incorrect level of audio output or
no audio output from EP Stimulator
board

– Windows 95 does not recognise EP Stimulator board
– Applications software corrupted
– EP Stimulator board faulty
– Calibration parameters stored on EP Stimulator board corrupted
– Internal cable disconnected or faulty
– Headphones faulty or connections via connector unit faulty
– DSP assembly faulty

No visual output from EP
Stimulator board

– Windows 95does not recognise EP Stimulator board
– Applications software corrupted
– EP Stimulator board faulty
– Monitor connections via connector unit faulty
– Monitor faulty
– DSP assembly faulty

Issue A May 1998

FAULT FINDING

Chapter 8 Page 2

Synergy Mobile Workshop Manual

Summary of Contents for Medelec Synergy Mobile

Page 1: ...Synergy Mobile Medelec Multimedia EMG EP Workshop Manual 034W003 Issue A OXFR Issue A May 1998 ...

Page 2: ... Division Trademarks The following trademarks are referred to throughout this Workshop Manual These are trademarks or registered trademarks of the companies shown below Melelec and TECA are registered trademarks of Oxford Instruments Medical Systems Division in the UK and other countries Microsoft and Windows 95 are registered trademarks of the Microsoft Corporation Pentium is a trademark of the I...

Page 3: ... 4509 Madrid D 62035 Wiesbaden Tel 34 1 653 8198 Tel 49 0 611 764 0 Fax 34 1 654 6794 Fax 49 0 611 764100 Netherlands Belgium Oxford Instruments NV Oxford Instruments NV Medical Systems Division Medical Systems Division Avelingen West 1 Molenberglei 21 4202 MS Gorinchem 2627 Schelle Tel 31 1 836 92111 Antwerp Fax 31 1 836 92119 Tel 32 3 880 8280 Fax 32 3 844 7842 IMPORTANT The information containe...

Page 4: ...g Conditions 2 15 Safety Standards 2 16 Quality Standards 2 17 INSTALLATION AND OPERATION 3 Operating Restrictions Cautions and Warnings 3 1 Disclaimer 3 2 Signal Cables 3 3 Installation 3 4 Routine Maintenance 3 5 Controls 3 6 PC Tower rear Connector Panel 3 7 Peripheral Connectors 3 8 TECHNICAL OVERVIEW 4 The PC Motherboard 4 1 The DSP Sub System 4 2 The Control Panel Electrical Stimulators 4 3 ...

Page 5: ...4 2 Channel Headbox Checks 6 5 5 and 10 Channel Headbox Checks 6 6 Trigger Gain Sweep Control Checks 6 7 Amp Cal Mode 6 8 Electrode Impedance Mode 6 9 Temperature Probe Checks 6 10 Control Panel Internal EMG Stimulator Checks 6 11 EMG Stimulator Probe Checks 6 12 External Speaker Checks 6 13 Footswitch Checks 6 14 Parallel Serial Port Checks 6 15 Networking Checks 6 16 EP Stim Checks 6 17 FIRMWARE...

Page 6: ...emoving The Isolation Transformer and Power Supply 9 5 CUSTOMER OPTIONS AND SPARES 10 Hardware Software Spares and Options 10 1 Recommended Spares 10 2 Issue A May 1998 Synergy Mobile Workshop Manual iii ...

Page 7: ...n Windows 95 To call up the Windows 95 help screen menu once INTRODUCTION ISSUE A March 1998 Synergy Mobile Workshop Manual Chapter 1 Page 1 INTRODUCTION The Synergy Mobile EMG system is mounted on a trolley and is based around a Pentium PC tower running under Windows 95 The system incorporates the latest advances in technology for transportable neurodiagnostic systems Synergy Mobile can have its ...

Page 8: ...n the Help button see Figure 1 1 The Help Topics window will then be displayed and it is then a simple matter of following the on screen instructions If you want to search for a particular word in the help screens click on the Find button Follow the instructions on the screen to create a word database and then search for the required word Help screens are also available within individual applicati...

Page 9: ...connected to neutral through 5kΩ Differential offset range 2V Common mode offset range 5V 2 1 5 Impedance Test Two Channel LED display in headbox with an indication at 2 4 8 16 32 and 32kΩ Accuracy 0 5kΩ between 2kΩ and 5kΩ Test Current 10µA a c Electrode selection on headbox using push buttons located adjacent to the touchproof input sockets Five and Ten Channel Pass Fail indication on headbox by...

Page 10: ...ow or high range Voltage Output High Range 0 to 300V Low Range 0 to 75V Current Output High Range 0 to 100mA Low Range 0 to 25mA Repetition Rates Fine adjustment available up to 200pps Up to 500pps in a train for pain studies Stim Duration 0 05 0 1 0 2 0 5 1 0ms Ranges in between those shown are software selectable At a repetition rate of 200pps and an intensity of 300V 100mA the maximum stimulus ...

Page 11: ...ate 50Hz or 60Hz switchable with software The visual stimulator can also be connected directly to a Flash Stimulator and via and to LED Goggles EOG Stimulator or Ganzfeld Stimulator 2 7 PC Tower Processor 200 or 233MMX Pentium Level 2 cache 512kbytes Memory 32MByte EDO RAM expandable to 192MByte Disk Controllers Floppy Disk Drive Primary and secondary IDE Ports 2 Enhanced serial 1 Enhanced paralle...

Page 12: ...d for user defined test settings On Line Report Generation software Microsoft Office compatible 2 13 2 Test Options Software is available for various test options see chapter 10 2 13 3 Language Support The software is configurable to English UK English US French German Italian Portugesse and Spanish 2 14 Size and Weight Size of system Overall width 500mm 19 7 Overall height 321mm 12 6 Overall dept...

Page 13: ... 2b of IEC 601 1 and EN60601 1 for SIGNAL INPUT and SIGNAL OUTPUT PARTS and this exception imposes restrictions on the connection of auxiliary equipment Under this condition the SIGNAL INPUT and SIGNAL OUTPUT PARTS are designated for the exclusive connection of equipment which complies with IEC 601 1 or EN60601 1 Alternatively additional external interfaces designed to give the required protection...

Page 14: ...dical electrical systems stipulates the necessary action s to be taken to ensure that medical electrical equipment continues to comply with EN60601 1 1990 safety requirements when other electrical equipment is connected to medical electrical equipment Any non medical equipment connected to a medical electrical system should comply with an appropriate safety standard for example EN60950 UL1950 Syne...

Page 15: ... 031C001 5 Ch 031C002 Control Panel 034C001 Monitor with Multimedia speakers L R R R L Mains input from SIGNAL Stim electrode PX Connections View on front lower bay of PC tower Serial port USB port 034A002 or 034A003 Stim Probe 031K025 034C002 034S016 034D014 034D007 034D005 034D006 034S003 PS1285 EP Audio Output OR INDICATE OPTIONAL PARTS DC Power to Tower isolating transformer Mains wall outlet ...

Page 16: ...cal equipment must not be in the patient vicinity if it is non medical equipment Example A Example A Both Synergy and the other electrical equipment have separate protective earth connections to wall socket outlets in the medically used room to prevent allowable leakage currents being exceeded in the event of the failure of either protective earth connection Portable multiple socket outlets be use...

Page 17: ...ent of failure of the first Portable multiple socket outlets be used must not protective earth to Synergy NO Synergy mains cable including protective earth Other equipment mains cable including protective earth Signal cable Example B MEDICALLY USED ROOM Synergy Wall outlet socket PC tower Printer Monitor Isolating transformer Mains inlet Isolated mains outlets Other electrical equipment OTHER ROOM...

Page 18: ... protective earth connection The wires are colour coded as follows Brown Line Blue Neutral Green Yellow Protective Earth It is essential that the protective earth conductor is connected to an external protective earth system to ensure patient safety and correct operation of the unit This protection is automatic in three wire mains systems if the mains plug has been correctly wired 3 4 3 Voltage se...

Page 19: ...is supplied with a detachable lead to connect it to the mainframe The lead has a moulded high density SCSI connector at each end to connect to the headbox and the DSP connector on the rear of the PC tower This type of socket has longer pins on the four corners and in the Synergy Mobile these are connected to 0V which means that when the headbox is plugged in the 0V connections are made before any ...

Page 20: ...ff This control operates in parallel with acquire on the stimulus probe ERASE Pressing this button erases the selected trace s but may depend on the system mode Results associated with the trace s will also be erased Press this switch to erase the selected trace or traces This enables you to collect a fresh set of data in the same store STIMULUS DURATION This rotary switch is used to increment or ...

Page 21: ... ISOLATED MAINS OUTLET ON THE POWER SUPPLY X L R LINE OUTPUT EXTERNAL STIM INPUT EP MICROPHONE AMPLIFIER INPUT 10BASE 2 10BASE T AUI OPTIONAL OPTIONAL OPTIONAL OPTIONAL MONITOR PRINTER PORT SERIAL A SERIAL B USB PORT SVGA MONITOR OUTPUT MOUSE KEYBOARD CONNECTIONS TO REAR PANEL OF TOWER LINE INPUT MICROPHONE INPUT LINE OUTPUT SPEAKER OUTPUT Figure 3 1 Connections to Rear Panel of PC Tower ...

Page 22: ...13 Horizontal sync 14 Vertical sync 15 DDC clock May be disabled if optional Graphics card used COM 1 COM 2 PC Serial Ports 9 way D type plugs Pin No Service 1 DCD Carrier Detect 2 RxD Receive Data 3 TxD Transmit Data 4 DTR Data Terminal Ready 5 GND Signal Ground 6 DSR Data Set Ready 7 RTS Request to Send 8 CTS Clear to Send 9 RI Ring Indicator q PC Printer Port 25 way D type socket Pin No Service...

Page 23: ...rd Video Output 15 way D sub half socket Pin No Service 1 Red video 2 Green video 3 Blue video 4 N C 5 to 8 Ground 9 N C 10 Ground 11 N C 12 SDA DCC 13 TTL Horizontal sync 14 TTL Vertical sync 15 SCL DDC The PC detects whether an optional graphics card is plugged into the system if one is detected then the PC video output will be disabled INSTALLATION AND OPERATION Issue A May 1998 Synergy Mobile ...

Page 24: ...m 8 N C 9 N C r External Loudspeaker 2 pin DIN Pin Service Small Audio signal Large Audio signal These outputs are differential and do not have a ground reference t EMG Stim 1 A External 9 way D type socket Pin No Service 1 12V 2 RS232 to Stim 1 3 RS232 from STIM 1 4 EMG positive trigger 5 0V 6 0V 7 EMG negative trigger 8 Stim OK 9 Sync This socket will not be connected inside the Connection Unit ...

Page 25: ...TIM EP Auxiliary I O Connector 8 way DIN socket Pin No Service 1 Right LED driver 2 Supply input for logic levels 3 EOG_RL1 relay driver 4 Left LED driver 5 EOG_RL2 relay driver 6 5V 7 24V 8 0V Shell The above connector is only active if the EP stim board is fitted Used when wanting to use the EOG relay driver outputs as logic level control lines Drivers for lamp relays for EOG interface 3 7 5 Fro...

Page 26: ...l sync 14 Vertical sync 15 N C 3 7 6 Network card connections optional Network Card Ethernet BNC Socket Pin No Service Inner Signal Outer Screen Network Card RJ 45 8 8 data socket see Figure 3 5 Pin No Service 1 TD 2 TD 3 RD 6 RD 4 5 7 8 N C 3 7 7 From Control Panel BPX EMG Int Stim 2 x Touchproof Sockets Red Stim Black Stim Issue A May 1998 INSTALLATION AND OPERATION Chapter 3 Page 14 Synergy Mob...

Page 27: ... 12V 17 12V 18 RS232_FROM_HB 19 HBDATA D 20 HBCLOCK D 21 HBFRAME D 22 0V 23 N C 24 12V 25 N C 26 0V Remote Jackbox Connector 25 pin D type Socket Pin No Service 1 24k pull up to 5V for temperature probe input 2 X2 3 EMG1 4 X1 5 X4 6 X6 7 Screen drive 8 T5 9 Fz 10 Pz 11 C4 12 O2 13 A2 14 0VAI for temperature probe input 15 Neutral 16 EMG1 17 X3 18 X5 19 A1 20 C3 21 O1 22 Cz 23 Oz 24 T6 25 N C INSTA...

Page 28: ...e 9 way D type plug Pin No Service 1 12V 2 RS232 to Stim 3 RS232 from Stim 4 EMG_POS 5 0V 6 0V 7 EMG_NEG 8 Stim_OK 9 HB_Frame Issue A May 1998 INSTALLATION AND OPERATION Chapter 3 Page 16 Synergy Mobile Workshop Manual ...

Page 29: ...20C44 floating point DSPs and a daughter module which provides the interface to other parts of the system The number of DSP chips fitted depends on the system configuration The two channel instrument has one DSP other systems have more is a block schematic of the DSP sub system The DSP card provides the following functions Floating point processing of the data Control of the daughter board compone...

Page 30: ...RIES CARD J10 SUPPLY FOR PC TOWER COOLING FAN RED BLACK e B t A t OPTION TRIGGER IN OUT AUX EXT STIM uEMG u EP HEADPHONES PC TOWER 034D005 034D007 034D006 034D009 034D013 RIBBON CABLE 034D010 SPLITS INTO 5 SMALLER CABLES HI 034D008 031D018 J203 J31 EXPANDED VIEW GUIDE TO CONNECTIONS INSIDE THE PC TOWER AND OTHER PARTS OF THE SYNERGY MOBILE SYSTEM TO INTERNAL SPEAKER AUDIO r PC INTERNAL SPEAKER CDR...

Page 31: ...OM PEROM PEROM pinstrip pinstrip pinstrip pinstrip pinstrip pinstrip DSP 1 320C44 DSP 2 320C44 DSP 3 320C44 DSP 4 320C44 ComPort Header DSPLINK Header Cable Jumper Line Receivers Shift Register Latch Com Port Control Interrupt Control Headbox LCA Patient Response Port EP Stim Control Port Trigger In Trigger Out Stim Watchdog DAC Control Stim Timers Stimulator LCA Audio DAC Amplifier Decode PAL 512...

Page 32: ...gnals 4 3 The Control Panel Electrical Stimulators A schematic diagram for this unit is shown in Figure 4 3 This schematic diagram includes the optional internal stim which can be built into the Control panel Control functions A micro controller is used to monitor all control panel operations Communication between the controller and the mainframe is made serially by an RS 232 link Control panel ro...

Page 33: ...IT OSCILLATOR CIRCUIT 350V SUPPLY RS 232 INTERFACE PIC DAC TRIGGER CONTROL ISOLATING TRANSFORMER ISOLATING TRANSFORMER ISOLATING TRANSFORMER OPTO ISOLATORS CURRENT SOURCE VOLTAGE SOURCE 12V SYNC TRIG TRIG RED SOCKET BLACK SOCKET STIM PROBE CONTROLS INTENSITY LED S EMG STIMULATOR SECTION TO AND FROM DSP BOARD VIA CONNECTION UNIT FROM DSP BOARD VIA CONNECTION UNIT FROM DSP BOARD VIA CONNECTION UNIT ...

Page 34: ...red and connected to these switches The selected sinewave and or noise signals are then fed to dual digital attenuators LOGDACs The noise signal has a switched resistive 34dB attenuator in the line before the LOGDACs The output from the LOGDACs are summed together before being connected to the power audio amplifiers a switched resistive 30dB attenuator is inserted in the sinewave signal path prior...

Page 35: ...ITOR SERIAL DAC LED STIM DRIVE EOG RELAY DRIVE TO LED STIMULATORS TO EOG RELAYS BUFFERS H16 INTERFACE LCA Z80 CPU WAVEFORM GENERATOR LCA RAMDAC VIDEO MONITOR SD n HA1 DUAL DAC ZD n ZA n PA n BUFFER LATCH LATCHES SHARED MEMORY SA n SH_D n RGB SHIFT REGISTER SHIFT REGISTER VIS_STIM AUD_STIM WHITE NOISE NOISE ATTENUATOR NOISE ATTENUATOR SIGNAL ATTENUATOR SIGNAL SUMMATION SIGNAL SUMMATION SHIFT REGIST...

Page 36: ...inputs through switched attenuators controlled by signals from the mainframe via the PIC In Impedance Check mode the oscillator signal is connected directly to the Pre amplifier inputs and hence any impedance across the input via user operated push button switches These switches also indicate to the mainframe via the PIC timpedance check is being made The oscillator signal is attenuated according ...

Page 37: ...UATOR IMPEDANCE INDICATOR NEUTRAL IMPEDANCE SWITCH CH1_SIG CH2_SIG TEMP PIC MICRO CONTROLLER PRE AMP BOARD 031E007 CONTROL BOARD 031E008 PAL DIVIDER CRYSTAL OSC SYNC 200kHz IMP CHECK AMP CAL IMP CHECK 100Hz SQUAREWAVE ADC CH1 CH1 CH2 CH2 TRIGGER SWITCH GAIN SWITCH SWEEP SWITCH SCLK PD L R OPTO ISOLATOR OPTO ISOLATOR OPTO ISOLATOR OPTO ISOLATOR OPTO ISOLATOR OPTO ISOLATOR STRB DCLK SDATA DIFFERENTI...

Page 38: ...witches also route the common mode reference signals back from the amplifier modules to the screen driver for the EP Channel inputs The reference signals from the EMG input amplifiers are routed directly to the EMG screen driver pins on the DIN socket The cross point switches are powered from a 10V supply bootstraped by the common mode reference signal and derived from the isolated 15V supply to c...

Page 39: ...dules via the cross point switches A temperature probe can be connected to the headbox via the Electrode Board The probe signal is input to an instrumentation amplifier and then routed to the PIC on the Control Board There is TECHNICAL OVERVIEW Issue A May 1998 Synergy Mobile Workshop Manual Chapter 4 Page 11 EP INPUTS EMG 1 INPUTS EMG 2 INPUTS EMG 2 CMR REFERENCE EMG 1 CMR REFERENCE EP CMR REFERE...

Page 40: ...nd the gain stage are controlled by signals derived from a shift register A serial data stream is clocked into the shift register of the first amplifier channel and then clocked out again into the input of the second channel The same data stream is used to set up all of the Amplifier Modules with the data being clocked out serially from one channel to the next 4 7 The 10 Channel Headbox The 10 cha...

Page 41: ... pair of secondary windings in series for 200V 240V and in parallel for 100V 120V operation The terminal block TB2 also provides isolated mains voltage to the eight outlets Terminal block TB2 provides isolated mains voltage to the three power supply modules The table below gives the voltages and maximum output currents the voltages can be measured at connector 15 way D type socket K30 DC PSU VOLTS...

Page 42: ...ould show the Windows 95 desktop The Synergy Mobile application is launched automatically at start up initially showing the Synergy Mobile logo and then showing the Synergy screen similar to that shown in Figure 5 1 The actual screen displayed is dependent on the version of software installed Verify that by moving the mouse around the mouse pointer can be moved to all areas of the display When the...

Page 43: ...utton on the stim probe and check that the adjacent LED illuminates Rotate the intensity control on the control panel and check on the oscilloscope for a stimulus pulse at the selected duration and repetition rate with the amplitude as indicated at the top of the screen Quit the application and shut down Windows 95 5 5 Earth Leakage Current Tests To carry out these tests correctly a special test f...

Page 44: ...does not exceed 500µA a c Switch the unit off set the Normal Reverse switch to Reverse and repeat the above test 5 5 2 Single Fault Condition Supply Open Open circuit one side of the mains supply using switch S2 see ensuring that the Synergy Mobile mains switch is in the ON position Measure the Earth Leakage current with the Normal Reverse switch in both positions and check that it does not exceed...

Page 45: ...Fault Condition Supply Open Reconnect the unit Protective Earth to the Mains Protective Earth Open circuit one side of the mains supply using switch S2 Repeat 5 7 1 but this time with the unit not powered up checking that the currents do not exceed 500µA a c and 50µA d c Switch off the unit and remove all connections to the Headbox Set the Normal Reverse switch to Normal and close switch S2 5 8 Pa...

Page 46: ...peatedly displayed Set the stimulus level to 0V and check that the error message stops re appearing Press STIM to turn the stimulus off 5 10 4 Mark Space Failure Connect the 3k0 stimulus load across the stimulus output sockets and monitor across it with the oscilloscope Set the stimulus level to 50V and press STIM Set the Repetition Rate to 100pps and increase the Duration in stages Check that whe...

Page 47: ...cations displayed on it The factory default position for the taskbar is the bottom of the display If the taskbar does not appear probably due to the way the user has configured the system press the Ctrl and Esc keys together and the Start menu and taskbar will appear The current time may be displayed on the taskbar this again depends on how the user has configured the system If the time is not sho...

Page 48: ...oth channels Click on OK when finished Set the AMP On Off switch on the Headbox to On Press the momentary Acquire button to load store traces Check that both store traces display a 2 division sinewave Select the Acquisition drop down menu and then select Setup Use the mouse to select each channels parameters page tab Set Amp Gain to 500mV Sensitivities Monitor Stores Cascades to 5mV for both chann...

Page 49: ...e sinewave increases and decreases as the sweep duration increases and decreases Press the momentary Acquire button on the Front Panel Check that the green LED next to the Acquire button briefly flashes and that the active store trace is updated once Press the Next button on the Front Panel and check that the next store trace has been made the active store Press the latching Acquire button on the ...

Page 50: ...t to Current then click on OK Press STIM and gradually increase the stimulus level to maximum 100mA Check on the CRO for a 300V stimulus pulse 100mA x 3k0 of 500µs duration every 33ms Rotate the stimulus level control over its full travel Check that the amplitude of the stimulus pulse can be varied continuously and smoothly between 0 and 300V 0 100mA Return the stimulus level to minimum and press ...

Page 51: ...ets joined together On the 5 Channel headbox short together all pins except pin 15 of the 25 way Remote Jackbox socket on the headbox and also link to the EMG2 and EMG2 input sockets Adjust the Headbox gain to give a 2 div sinewave on the monitor traces Select the Acquisition drop down menu and then select Setup Select Audio Setup and then click in the Audio On Off box to turn audio on Select the ...

Page 52: ...pback connector and type on the keyboard Check that the characters typed no longer appear in the Hyper Terminal window Exit Hyper Terminal When asked if you want to disconnect click on OK When asked if you want to save the session click on NO 6 16 Networking Checks The checks described in this section can only be performed if connection to an active network is available or another PC with a networ...

Page 53: ...t Audio Type to Tone Burst Intensity to 100dB Frequency to 1kHz Turn Masking On and set Side to Contralateral Type to White Noise and Intensity to 0dB Click on Ok when set Press the Control Panel Stim button Check that a 1kHz tone at the set Rep Rate can be heard from the left earphone and white noise in the right earphone Press the Control Panel Stim button Click on the Other Side button and pres...

Page 54: ...ard H16 Interface 003P043 Housed in one FPGA type TPC1020B in position M2 on EP Stimulator Board 031E010 Version A00 First supported issue Waveform Generator 003P042 Housed in one FPGA type TPC1020B in position M4 on EP Stimulator Board 031E010 Version A00 First supported issue Decode PAL 031P023 Housed in one PAL type CE22V10 15JC 4 in position M57 on EP Stimulator Board 031E010 Version A01 First...

Page 55: ...Microcontroller 034P002 Housed in one PIC type 16C74 20 L in position M5 on control panel board Version A 00 First supported issue Checksum Issue A May 1998 FIRMWARE HISTORY Chapter 7 Page 2 Synergy Mobile Workshop Manual ...

Page 56: ...nnected Hard disk is faulty IDE interface on PC motherboard is faulty BIOS settings on PC motherboard have changed Windows 95 operating system is not loaded at switch on System software has become corrupted refer to Windows 95 documentation Hard disk is faulty IDE interface on PC motherboard is faulty BIOS settings on PC motherboard have changed Error messages displayed during start up sequence Sy...

Page 57: ... loudspeaker Control panel faulty DSP assembly faulty No EMG Stimulus output Windows 95 does not recognise DSP assembly Applications software corrupted EMG Stimulus circuit in control panel or stim probe faulty Tower Internal cables connections via I O board and connections box faulty DSP assembly faulty Displayed EMG stimulus level does not change as control adjusted Applications software corrupt...

Page 58: ...Printer faulty Printer data lead faulty or disconnected Printer off line Unable to read CD ROM or Optical Disk Disk not fitted in drive correctly Windows 95 not recognising CD ROM drive at switch on Power cable to drive disconnected Data cable to drive disconnected Faulty mother board FAULT FINDING Issue A May 1998 Synergy Mobile Workshop Manual Chapter 8 Page 3 ...

Page 59: ...not slide off easily then while holding the levers with the fingers gently press with thumbs on the edges front of the floppy disk drive bezel Re fitting the cover of the unit is the reverse process to the above Take care not to trap or damage any cables as the cover is re fitted When re fitting the cover to the chassis note the bottom edges of the cover must be engaged in channels in the chassis ...

Page 60: ... out of the unit Refitting of the motherboard is the reverse process to the above When refitting it ensure that the board locates correctly in the plastic runner and correctly connects with the Accessories Card Reconnect the other cables to the correct connectors otherwise damage may result 9 1 6 Removing the Accessories Card Riser Card Remove the Plug in boards and motherboard as described in sec...

Page 61: ...y from the chassis if this is not possible disconnect them inside the unit Refitting of the floppy disk drive is the reverse process to the above When reattaching the ribbon cable do not use the connector at the end of the cable as this is for a second floppy disk drive which is not fitted in the Synergy Mobile Ensure that the hole in the right hand bracket for the drive fits over the tab sticking...

Page 62: ...sting SIMMs to be removed then these can be removed by moving the clips at each end of the socket away from the SIMM so that it pops up The upper SIMM must be removed first When fitting the replacement SIMMs the lowest SIMM must be installed first AIf the SIMMs are not installed correctly the system will not recognise them at switch on possibly causing the system to hang This will normally be indi...

Page 63: ...ain access to the supply the shelf must first be removed the shelf is fixed with four Hex socket head screws to the uprights of the trolley Once the shelf is removed the top of the PSU can be seen it is fixed onto a support tray with four M5 Posi head screws Remove these screws and carefully because it is very heavy lift the supply from the tray The top cover is held in place with four screws See ...

Page 64: ...4V 0V24 0V24 24V 24V FM1 FM2 PRI 2 PRI 1 SEC 2 SEC 1 S1a S1b F1 F2 J1 L N E X TH1 2R5 25 C TH2 2R5 25 C C T1 S2 a b S3 a b 110V 110V 220V 220V K35 K36 K33 K34 K37 K38 K39 K40 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K1 K2 E1 T 10A 100 120V T 6 3A 200 240V MAINS OUTPUT SELECTOR SWITCH MAINS INPUT SELECTOR SWITCH MAINS INLET ISOLATED MAINS OUTPUTS DC OUTPUTS K8 K9 K10 K11 SYNERGY MOBILE POWER...

Page 65: ...is a set of switches that select the Control units internal EMG Stimulator or the A Stim probe output on the connector unit See figure below SERVICING Issue A May 1998 Synergy Mobile Workshop Manual Chapter 9 Page 7 t TRIGGER IN OUT AUX EXT STIM uEMG u EP HEADPHONES t B A B CONNECTION BOX ALL SWITCHES SET DOWNWARDS ENABLES STIM PROBE A AND B OUTPUTS ON THIS BOX ALL SWITCHES SET UPWARDS ENABLES THE...

Page 66: ...nel Internal EMG Stimulator 034C001 Connector box 034C002 PC I O Board Support tray D drive Assembly Tray cover cover and 7 cables 034D016 The above assembly contains the all following parts which can be ordered separately I O Board 034E003 Metal Support tray Assembly for I O Brd 034Y007 Support tray cover 034Y008 Cable DD Bay to EP Stim Brd 034D013 Cable DD Bay to Con Box EP H phones 034D007 Cabl...

Page 67: ...crosoft Office Professional Spanish CP138 Microsoft Office Professional French CP140 10 2 Recommended Spares The following items of hardware are Service Spares recommended by Oxford Instruments including some items already shown above Headbox Cable 031D024 Knob 30 x 15 031Y037 Knob 17 x 12 031Y038 Knob 12 x 12 031Y039 Mouse PS 2 CP102 Floppy Disk Drive CP30 2 5Gb EIDE Hard Drive CP148 32MB SIMM me...

Page 68: ...specification Chp 2 Pg 3 E Electrical Stimulator Stimulus Duration Chp 2 Pg 2 Electrical Stimulator Specification Chp 2 Pg 2 Current Output Chp 2 Pg 2 Repetition Rates Chp 2 Pg 2 Voltage Output Chp 2 Pg 2 F Fault Finding Chp 8 Pg 1 G Graphics card option Chp 2 Pg 3 H Help Advice Contact information Chp 3 Pg 1 Handbook Scope Chp 3 Pg 1 Hardware and Spares Chp 10 Pg 1 I IEC 601 1 Compliance conditio...

Page 69: ...onnection unit Chp 9 Pg 7 Removing disk drives Chp 9 Pg 2 Removing Plug in boards Chp 9 Pg 1 Removing the covers Chp 9 Pg 1 Removing the speaker Chp 9 Pg 5 Replacing the processor Chp 9 Pg 3 Size and Weight Chp 2 Pg 4 Software Packages Test software options Chp 10 Pg 1 Spares Chp 10 Pg 1 Symbols Chp 3 Pg 6 System Connections Chp 3 Pg 10 T Task Bar Chp 1 Pg 2 Temperature Probes Chp 2 Pg 2 V Visual ...

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