GE Dash Responder User guide

Dash Responder
Version V 1.0
Servicing Instructions
2004768-001 ENG Revision F

GE Medical Systems
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Servicing Manual Dash Responder V1.0 Revision F
Page 2 of 72 2004768-001
Caution:
During repairs/service interventions, observe the protective measures against damage
due to ESD.
• GE Medical Systems Information Technologies GmbH is responsible for the
effects on safety, reliability, and performance of the device, only if
− assembly operations, extensions, readjustments, modifications, or
repairs are carried out by GE Medical Systems Information
Technologies GmbH or by persons authorized by GE Medical
Systems Information Technologies GmbH,
− the electrical installation of the relevant room complies with the
applicable national and local requirements, and
− the instrument is used in accordance with the instructions for use.
• This manual contains service information, operating instructions are provided in
the Operator’s Manual of the instrument.
• This manual is in conformity with the instrument at printing date.
• All rights are reserved for instruments, circuits, techniques, and names appearing in
the manual.
The authorized representative for GE Medical Systems Information Technologies Inc.
in Europe is:
GE Medical Systems
Information Technologies GmbH
Munzinger Str. 3
D-79111 Freiburg, Germany
Tel.[phone]
Fax:[phone]
©2005 General Electric Company. All rights reserved.

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1 General Introduction_______________________________________________7
2 General Overview of the Dash Responder ______________________________9
GE Medical Systems Instrument Part Numbers _______________________________9
Configuration of Instrument Part Numbers __________________________________________ 9
Configuration of the PCB Part Numbers ____________________________________________ 9
Instrument status documentation __________________________________________________ 9
Instrument Versions of the Dash Responder __________________________________9
3 General Description_______________________________________________10
Dash Responder Block Diagram ___________________________________________10
Dash Responder Device___________________________________________________10
PCB Analog ____________________________________________________________10
Block Diagram _______________________________________________________________ 10
PCB Digital ____________________________________________________________11
Block Diagram _______________________________________________________________ 11
PCB Power Management _________________________________________________12
Block Diagram _______________________________________________________________ 12
PCB Pacer _____________________________________________________________13
Block Diagram _______________________________________________________________ 13
Battery ________________________________________________________________14
Batteries 2009218-001, 2009219-001 ________________________________________14
Battery conditioning___________________________________________________________ 16
Defective Battery _____________________________________________________________ 17
Battery replacement ___________________________________________________________ 17
4 Service Tool _____________________________________________________18
Software Download Information ___________________________________________18
Installation _____________________________________________________________19
Software Download______________________________________________________19
Calibration_____________________________________________________________20
Monitor Interface test____________________________________________________21
Installation __________________________________________________________________ 21
Interface Test ________________________________________________________________ 22
5 Service Menu ____________________________________________________23
User configurable settings_________________________________________________23
Structure of the Service Menu _____________________________________________23
6 Replacing PCBs__________________________________________________26
Safety Information for Disassembly ________________________________________26
Disassembly Procedure___________________________________________________26
Opening Unit ________________________________________________________________ 26
Analog PCB _________________________________________________________________ 26
Digital PCB _________________________________________________________________ 28
Pacer PCB __________________________________________________________________ 29
Power Management PCB / Battery Case ___________________________________________ 30
High-Voltage Capacitor ________________________________________________________ 32

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7 Troubleshooting Tips______________________________________________33
Electrostatic Discharge (ESD) _____________________________________________33
CMOS Components ___________________________________________________________ 33
Special Components___________________________________________________________ 33
Battery Failure _______________________________________________________________ 34
8 Error Messages and System Information______________________________36
Messages_______________________________________________________________36
Error Numbers _________________________________________________________37
9 Pin Configuration ________________________________________________38
External Connections ____________________________________________________38
Paddle Input Connector ________________________________________________________ 38
Monitor Connector____________________________________________________________ 39
Battery Connector ____________________________________________________________ 40
Internal Connections_____________________________________________________40
Digital PCB _________________________________________________________________ 40
Analog PCB _________________________________________________________________ 47
Power Management PCB _______________________________________________________ 49
Pacer PCB __________________________________________________________________ 49
10 Technical Specification __________________________________________50
Operating Modes________________________________________________________50
Energy Selection ________________________________________________________50
Defibrillator Charging ___________________________________________________50
Defibrillation Shock _____________________________________________________50
Discharge Circuit________________________________________________________51
Defibrillation Pulse Output _______________________________________________51
Safety Discharge ________________________________________________________51
Test Features ___________________________________________________________51
Synchronization_________________________________________________________52
Pacemaker _____________________________________________________________52
Power Supply___________________________________________________________52
Operational Readiness ___________________________________________________52
Operating Position_______________________________________________________52
Type of Protection_______________________________________________________52
Environment ___________________________________________________________52
Operation ___________________________________________________________________ 52
Transport and Storage _________________________________________________________ 53
Dimensions_____________________________________________________________53
Weight ________________________________________________________________53
Environmental Tests _____________________________________________________53

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11 Maintenance and Technical Inspection _____________________________54
Schedule _______________________________________________________________54
Manufacturer Responsibility ______________________________________________54
Visual Inspection________________________________________________________54
General Cleaning________________________________________________________54
Checkout Procedures ____________________________________________________55
Testing Equipment ______________________________________________________55
Performance test ________________________________________________________56
Power up test ________________________________________________________________ 56
Key Test____________________________________________________________________ 56
Display Test _________________________________________________________________ 57
Detection of internal Electrodes__________________________________________________ 57
Discharge and speaker test ______________________________________________________ 57
Pacemaker test _______________________________________________________________ 58
Defib Function Test and Pacer Option Test _________________________________________ 59
Battery conditioning test _______________________________________________________ 59
12 Electrical Safety Tests ___________________________________________61
Patient (Sink) Leakage Current Test________________________________________62
13 Spare Parts List ________________________________________________64
14 Master Record Index (see Appendix) _______________________________69
15 Circuit Diagrams (see Appendix)___________________________________71

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REFERENCES
Reference Document Title
[UM] User Manual for Dash Responder Version 1.0 Rev. A (2002853-002-A)
[Lang] Languages of Dash Responder Version 1
Revision History
This manual is subject to the GE Medical Systems Information Technologies change order service. The
revision code, a letter that follows the document part number, changes with every update of the manual.
The initial version of the manual has the letter A.
Part No. Revision Code Date Comment
2004768-001 V 0.1 2001-03 Draft
2004768-001 Rev. A 2001-05 Release A
2004768-001 Rev. B 2001-07 ECO 067557
2004768-001 Rev C 2001-09 ECO 067925
2004768-001 Rev D 2002-12 ECO 070336
2004768-001 Rev E 2004-01 ECO 075782
2004768-001 Rev F 2005-05 ECO 080823

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Revision F Servicing Manual Dash Responder V1.0
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1 General Introduction
The Dash Responder is a lightweight, portable defibrillator which must be connected to a Dash 2000 or
Dash 3000/4000 patient monitor for operation.
The Dash Responder is available with or without transcutaneous pacer.
The Dash Responder is powered from a rechargeable battery which is inserted into the device. A new
fully charged battery provides power for approx. 60 shocks with 360 J each or for approx. 5 hours of
pacemaker operation at an average pulse rate and pacer output (75 ppm, 100 mA).
The Dash Responder will not operate unless equipped with the battery.
The battery charges automatically when the system (patient monitor and Dash Responder) is connected
to the power line and both devices are not turned on. When the devices are on, the battery will charge
only when the Dash Responder does not require the full energy for operation the patient monitor is able
to deliver.
The Dash 3000/4000 also charges the defibrillator battery when disconnected from power line. A
separate, optional charging unit (ASU 3000) is available for battery charging.
Test
Defib Test 50 ΩCAUTION
Refer to equipment
manual before
connencting to these connectors
GE Medical Systems
InformationTechnologies
D-79111 Freiburg
Dash Responder
Munzinger Str. 3
123
On/Off Charge Shock
Sync.
Energy Select J (50
Ω )Charging Status
Pacer Pause
Pacer Mode
Pacer On/Off
Rate (ppm)
Output (mA)
Dash Responder
transport defibrillator
1 2 3
4 1211109876 135 1514
16 17

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Page 8 of 72 2004768-001
1Button to unlock battery for removal
2Monitor connector
3Locking lever
4Battery with "Test" button and charge level indication
5Sync. button with indicator to enable and disable the synchronized operating mode (when the
synchronized mode is enabled, the indicator is illuminated and goes off with each sync pulse)
6Charging Status indicator
solid yellow: battery charging
solid green: battery charged
blinking yellow: charging error (replace battery)
flashing green: battery conditioning program active
7On/Off button to turn the defibrillator on and off (indicator is illuminated when the device is
turned on)
8Energy Select buttons to select the defibrillation energy
9Charge button to initiate defibrillator charging
10 Shock buttons to release the shock when adhesive or internal electrodes are connected (both
buttons must be pressed simultaneously);
the indicator lights up when the defibrillator is charged
11 Pacer Mode button to select the pacer operating mode (fixed rate, demand)
12 Pacer Pause button to suspend delivery of pacer pulses (without changing the pacer settings)
13 Pacer On/Off button with indicator to turn the pacemaker on and off (when the pacemaker is
enabled, the indicator is illuminated and goes off with each delivered pacer pulse)
14 Output (mA) button to change the pacer output current
15 Rate (ppm) button to change the pacer rate
16 Contacts for test discharge (possible only with adapter lead for adhesive defibrillation pads)
17 Connector for exchange of the defibrillation electrodes (switch off the device before exchanging
the electrodes!)

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2 General Overview of the Dash Responder
GE Medical Systems Instrument Part Numbers
Configuration of Instrument Part Numbers
The instrument part number comprises of ten digits, the first seven digits determine the instrument type
and the last three—separated by a hyphen—the instrument version.
The user language is determined by configuration, thus is no part of the instrument number.
Configuration of the PCB Part Numbers
The number of the PCB is listed on the barcode label. The label can be seen on the PCB without
dismounting.
As some PCBs need additional tests before they get delivered as field replacement boards, this boards
and assemblies were given separate spare part numbers.
Therefore were special field replacement spare parts are available this need to be ordered (see Spare
Parts List on page 64).
The affiliated documentation, e.g. reference diagrams, circuit diagrams and parts lists are listed under
the part number of the PCB part number.
Instrument status documentation
Due to hardware and software combination, unambiguous documentation of the instrument assembly
status is necessary also in event of repairs.
Master Record Index
2002550-013
The master record index lists the valid configurations for the Dash Responder. Numbers for all
permissible components of the device are listed. Spare part numbers are provided where available.
Instrument Versions of the Dash Responder
CAT No Description
2002550-001 DASH RESPONDER, MANUAL
2002550-002 DASH RESPONDER, MANUAL, PACER

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3 General Description
Dash Responder Block Diagram
PCB
Monitor
Interface
PCB Digital
Display
Device- Control,
FLASH, SRAM, EEPROM,
DC/DC- Converter
Display-
Interface
PCB Analog
Battery
Keypad Interface
Keypad
Module Interface
HV Generation
HV Control
Paddle Interface
Shock Form
EnergyMeasurement
Pacer Interface
Security
from / to
Paddles
PCB Pacer (device-variant)
Pace Control
Security
from / to
Monitor
Sound-
Interface
Battery Managm.Control
Charger
Deep Discharge Protection
Power switches
On/Off Circuit
PCB Battery
Managemet
PCB Keypad
Test
Discharge
50 Ohm
Dash Responder Device
PCB Analog
Block Diagram
The PCB Analog provides the following functions:
• Charging of the High-Voltage Capacitor.
The PIC-controllers initiate the charging of the high voltage capacitor to a voltage provided by the
main software on the PCB digital. One PIC supervises the other during the charging to make sure,
the selected voltage will not be exceeded. In the next charging cycle the PICs change place and the
first is supervised by the second.
• Shock delivering and measuring of applied energy.
The PIC-controllers initiate the switching of the relais to deliver the energy to the patient according

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to a command sequence of the main software. The energy which was delivered to the patient is
measured and the value transfered to the main software.
Block Diagram PCB Analog (2002316-001)
Connectors
HV Generation
Shock Control
Paddle Connector Code
Paddle Connector HV
PCB Pacer
HV Capacitor
PCB Power Management
PCB Digital
Speaker
PCB Digital
Block Diagram
The PCB Digital provides the following functions:
• Control of all subsystems (Powermanagement, Analog, Pacer).
• Display
The display is connected to the PCB Digital that contains a graphic controller.
• Keypad
Any pressed keys are decoded by the PCB Digital and the LEDs on the keypad get illuminated
under control of the PCB Digital.
• Sound generation
The alarm sounds are generated and amplified on the PCB Digital by a sound chip.

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Block Diagram LPL Digital
Connectors
Status & Control
I2C-Bus
Display
Keypad
Sound
PCB Powermanagement
PCB Analog
PCB Pacer
(BDM)
Display (piggy back)
Keypad (flex)
PCB Power Management
Block Diagram
The PCB Powermanagement provides following functions:
• Charging and Conditioning (Discharge / Charge-cycle) of the battery
The battery gets charged if it needs to be and if energy is provided by a monitor connected to the
Dash Responder. The PCB Powermanagement powers the device and guarantees that every
remaining energy from the monitor is used to charge the battery, but the drawn current does not
exceed the maximum current the monitor is able to deliver.
During the conditioning cycle the battery gets fully depleted and afterwards fully recharged to
regain the optimal energy level.
• Communication with the battery charge level monitoring system which is integrated in the battery
In the service menu the energy level of the battery and the number of conditioning cycles are
given.
• Unregulated Power supply for subsystems
The Powermanagement regulates the supply voltage to a value that the battery gets charged if
needed and the supply current drawn from the monitor so that the maximum current is not
exceeded.

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Block Diagram PCB Power Management
Connectors
Power Supply
Battery Charging/
Conditioning
Monitor
PCB Digital
PCB Analog
Battery Case
PCB Pacer
Block Diagram
The PCB Pacer provides following functions:
• Generation of floating HV
The generated voltage level is sufficient to deliver any selected current level to the highest
expectable patient resistance.
• Switched current source for pace pulses
The pace pulse current is regulated by means of a programmable current source.

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Page 14 of 72 2004768-001
Block Diagram PCB Pacer
Connectors
Pulse Generation
Pulse Control
PCB Analog
PCB Digital
Battery
The battery in the Dash Responder is a rechargeable NiCd battery with a charge level of 2000 mAh and
nominal 12 Volt (10 cells).
The battery contains a charge level monitoring system to measure the remaining charge in the battery.
By pressing the key on the battery front the actual charge level can be displayed.
Nevertheless, the displayed charge level provides no information about the quality and usability of the
battery. A worn out battery may still possess its capacity but—as a result of an increased internal
resistance—is only partially operational in the defibrillator. The batteries should be periodically tested
in the ASU 3000.
Batteries 2009219-001
General Information
Rechargeable batteries require special maintenance and continued checks to assure they function in
emergency situations. It is normal for batteries of this type to self-discharge, even when the device is
switched off or in storage.
Furthermore, the battery capacity decreases with age: the storage capacity of older batteries is less than
that of new batteries. By regular maintenance (charging and discharging at regular intervals) the battery
service life can be considerably extended.
Battery type 2009219-001 allows you to determine the charge level and capacity at any time.
Furthermore, the LEDs on these batteries indicate
- the presence of a short-circuit (a distinction is made between a short-circuit in the device
(excessive current drain) and a short-circuit between battery cells),
- a display problem,
- the imminent shut-down of the display to protect the battery from over-discharging.

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Indication of charge level and capacity
LED charge capacity key to symbols
100 % 100 % LED off
60 ... 80 % 100 % LED on
40 ... 60 % 100 % LED blinking slowly
20 ... 40 % 100 % LED blinking rapidly
6 ... 20 % 100 %
0 ...6 % 100 %
100 % < 80 %
100 % < 60 %
Test
depleted,
display off

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Indication of short-circuit
LED what it means comment
short-circuit in the device disconnect battery from device
short-circuit of battery cells battery defect, battery cannot be used any more
Fault indication
LED what it means comment
electronics fault perform reset; if problem persists, battery
cannot be used any more
Perform reset
Test
> 10 s
For a reset, the TEST button needs to be pressed longer than 10 seconds. It is
recommended to perform a reset each time a fault is indicated. If the fault indication
persists, the battery is defective and cannot be used any more.
Automatic shut-down of the display (protection from deep discharging)
To protect the battery from deep discharging, the display shuts down automatically. The imminent
shut-down is indicated by running lights, with each of the 5 LEDs blinking in sequence for about 1
second. The display reactivates automatically when the battery is being charged.
Battery conditioning
The battery should be conditioned with the internal battery conditioning program or with the optional
battery charging unit ASU 3000 every month. As the ASU 3000 is a specially designed battery
charging unit that has a definite conditioning mechanism, it is advisable to use it to condition the
battery. Furthermore the conditioning cycle will last about twenty-one hours if performed in the
defibrillator and only five hours in the ASU 3000.
NOTE
Since the battery will be discharged in the course of the program and the program takes several hours to
complete, a second charged battery must be available to ensure that the defibrillator is ready for use.
The conditioning program can only be run when the defibrillator is connected to the patient monitor
and the monitor, in turn, is connected to the power line.
Start of Conditioning
• Connect the monitor-defibrillator system to the power line.
• Turn the defibrillator on.

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• Display the main setup menu by simultaneously pressing the two ENERGY SELECT keys (at least 2
seconds).
• Use the ENERGY SELECT key to highlight SERVICE MODE and confirm the selection with the
CHARGE key.
The SERVICE MODE menu appears.
• Select BATT COND with ENERGY SELECT key and confirm with CHARGE key.
You will see the battery conditioning menu.
• Select COND START with ENERGY SELECT key and initiate the conditioning program with CHARGE
key.
These are the steps of the conditioning program:
the Dash Responder switches off,
the battery charges (up to about seven hours, depending on the initial energy level), the green
LED blinks, the yellow LED is solid on
the battery discharges (seven hours), the green LED blinks, the yellow LED is off
the battery charges (about seven hours), the green LED blinks, the yellow LED is solid on
The two CHARGING STATUS indicators signal the steps of the conditioning program:
green LED yellow LED conditioning program step
blinks on battery charging
blinks off battery discharging
blinks blinks charging error (defective
battery)
In the course of the program you can display the battery conditioning menu at any time to view the
battery status or to stop the program.
• Turn on the defibrillator to display the battery conditioning menu.
The battery status is not updated automatically when the battery conditioning menu is displayed; for
displaying a new status leave and enter again the conditioning menu.
Defective Battery
As soon as the battery quality (“F/NEW”) drops to 60% or less, the battery must be replaced by a new
one.
Battery replacement
NiCd batteries have a limited service life time as their storage capacity deteriorates with age. For this
reason, the battery must be replaced every 2 years.
Note
Disposal Notice: Should this product (battery) become damaged beyond repair, or for some reason
its useful life is considered to be at an end, please observe all local, state, and federal regulation that
relate to the disposal of products that contain lead, batteries, plastics, etc.

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4 Service Tool
This Service Tool is suitable for testing of the Dash Responder and Dash Monitor separately, further
for software download and calibration of the Dash Responder.
Software Download Information
The product software for the Dash Responder can be loaded into the flash memory by means of a PC or
laptop. This requires the Dash Responder Service kit, a complete set for download, calibration and test.
The kit (2006861-001) can be ordered from GE Medical Systems, please contact your local distributor;
it includes
1. software diskette,
2. DRST-Box (2005378-001) for adaptation,
3. DC power supply (2000300-001),
4. PC cable assembly (223 362 03).
Additional you need
• power cord for the power supply
• PC/laptop with
• Microsoft Windows 95 / 98 / NT / Windows 2000 or Windows Millennium.
• RS-232C serial port (COM).
• 3.5-inch floppy drive
When updating to a newer software version, please order the corresponding User Manual separately.
(see Spare Parts List on page 64)

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For authorized dealers (password required) the software download can be carried out via the following
Internet address:
http://213.164.65.40/octodata/osmh21.nsf/$start/homepage
Important servicing information:
1. Before loading a new software write down the actual device, defib and pacer setup (see User
configurable settings on page 23).
2. After replacing any of the PCBs’, energy calibration has to be done. (For more details see Section
Calibration on page 20).
Installation
1. Create a directory on your hard disk (e.g., stools) and copy the service program 'drst.exe'
into this directory as well as the software file(s) (*.hex) for the product software.
2. Attach the DRST-Box to the Dash Responder instead of a Dash Monitor.
3. Connect the power supply and the serial cable to the DRST-Box. The other end of the serial cable
should fit into a free COM-port of your PC. You may need a standard 9pin/25pin adapter if the PC
has a 25-pin socket COM.
4. The application software for the Dash Responder comes on a separate floppy disk.
Software Download
1. The product software must be available in the same directory as 'DRST.exe'.
2. Check at the DRST-Box that
• the LED PERIPRESENT is ON and
• the Switch '9-18V' is ON.
3. Read out all user specific setup and write it down (see User configurable settings on page 23).
Start the Bootloader following these steps
• Switch off the defib
• Hold down the CHARGE and left SHOCK key simultaneously.
• Press and release the ON/OFF key.
• Release the CHARGE and the left SHOCK keys simultaneously when the SYNC LED and SHOCK
LED are blinking alternately.
• Start 'DRST.exe' on the PC and select the serial interface (COM 1…4) you chose to
connect the Dash Responder. If the connection is correct, ‘RESPONDER FOUND’ is displayed.
4. Now select the desired software in the download window (*.hex) and click on ‘DOWNLOAD’.
After successful installation of the software (duration about 3 minutes), the message ‘END
DOWNLOAD’ appears in the bottom line of the service tool window. The Dash Responder restarts.
5. Enter the previous setup (see User configurable settings on page 23).

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Calibration
The accuracy of the shock energy measurement needs to be checked on a regular basis (see
Maintenance and Technical Inspection on page 54) and after any replacements of PCBs or update of
the software.
CAUTION
No more than 16 shocks can be applied without a pause of about 15 minutes afterwards to avoid
overheating of the device!
Check the current calibration first:
Apply two shocks with each 50 J, 100 J and 360 J to a calibrated defibtester (e.g. DNI Nevada Inc.). If
any of the delivered energy values deviates for more than ± 5% from the chosen value calibration is
required.
The calibration procedure requires
• Dash Responder Service kit (2006861-001)
• PC/Laptop
• calibrated defibtester with energy display (e.g. DNI Nevada Inc.)
• hard paddles or the adapter cable for the adhesive paddles which are suitable for the used
defibtester.
NOTE
The charge level of the battery should be sufficient for several shocks.
The following steps describe how to calibrate the Dash Responder