Chattanooga SENIOR SOLUTIONS, Service Manual

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Senior Solutions™ Therapy System
1 THEORY OF OPERATION
1.1 OVERVIEW
The Senior Solutions Therapy System are comprised of several PC board assemblies housed within a
common enclosure. These assemblies each support a distinct function in the product. The basic elements
are User Interface, Control Board, Stim Board, Ultrasound Board, Ultrasound Applicator, and Power Supply
Circuits.
When a Module (Channel 3/4 Electrotherapy, NiMH Battery, or sEMG) is installed, the Control Board
software automatically recognizes that a Module has been installed and prompts the installer to perform
certain tasks, for verification of Module installed and to make the respective Module fully functional. No
additional software installation is required as the Therapy System contains all necessary software to
accommodate any Module installation.
1.2 POWER SUPPLY CIRCUITS
A universal input 100 Watt power supply provides the Control Board and Stim Board of the system with 24
volts DC. The supply is connected to the mains at all times when the cord is attached. The 24 VDC supply is
regulated locally at each PC board as required. On Combination Systems, a separate universal 75 Watt Power
Supply provides 24 volts DC to the Ultrasound PC Board. The 24 volt DC power is regulated at the board, as
required.
1.3 CONTROL BOARD
The Control Board serves just as its name implies. It controls the operation of the stim board, ultrasound
board, user interface, optional modules, and accessories. The control board communicates to the stim
boards and ultrasound board through a proprietary bus. The control board drives the display. The control
board reads the menu Buttons. The control board reads and manages the Multimedia (MMC) Card, Patient
Data Card, and sEMG Data Card. Sound output is generated by the control board and routed to an internal
speaker.
The control board reads the Optional Patient Interrupt Switch and the Operator Remote Control (used to
administer Manual Stimulation Therapy).
1.4 STIM BOARD
The Stim Board creates all muscle stimulation output. Communications to the Stim Board is via a
proprietary bus. A processor on the Stim Board acts on messages passed to it by the Control Board to
set up waveforms and adjust output amplitude. Information can likewise be passed from the Stim
Board back to the Control Board for monitoring Current, Microcurrent Probe Contact Quality indication,
etc. If the Stim Board does not respond as expected to a command from the Control Board, output is
STOPped and an Error Message is generated.
1.5 ULTRASOUND BOARD AND APPLICATOR COMBINATION SYSTEMS ONLY
The Ultrasound Board generates the 1 or 3.3 MHz output to drive the Sound Head of the Applicator. The
Ultrasound Board is accessed through the proprietary bus by the Control Board. It can provide current and
voltage information about the ultrasound output of the board. The calibration data for the Sound Head is
passed through the Ultrasound Board from the Applicator to the Control Board. By storing the calibration
data in the Applicator, there is no calibration necessary for the Ultrasound Board and any calibrated
Chattanooga Group Senior Solutions Therapy System Applicator can be connected and operated to
provide accurate coupling and output.
1.6 USER INTERFACE AND ACCESSORIES
The LCD display panel provides the operator visible feedback in the way of menu choices. Pressing the
menu Buttons makes selections from the menus. The control board interprets these user inputs and responds
accordingly. Audible feedback is given as well to indicate key presses and end of treatment.
The Control Board accesses the Patient Data Card, sEMG Data Card and MMC Card via an on board Reader/
Writer Interface. The voltage necessary to operate the reader is provided by the 100 Watt Power Supply and is
regulated by the Control Board.
A. Channel 3/4 Electrotherapy Module
The Channel 3/4 Electrotherapy Module creates all muscle stimulation output for Channels 3 and 4.
The Channel 3/4 Electrotherapy Module is interfaced with the System via a ribbon cable which
supplies power and facilitates communication between the Stim Board and Control Board of the
system. All waveforms available to channels 1 and 2 are available to channels 3 and 4 via the system
software. No additional software is required for full functionality of the module.