PhySys Edition SD Service Manual
Rev. B
20.08.2013
Page 42/52
Service Manual PhySysSD_RevB_20.08.2013.doc
10. Troubleshooting
The therapy device PhySys Edition SD has numerous hardware and software safety features for the safety of
patients, users and Service.
Risks that may arise from undefined control conditions or functional errors in the device are prevented by various
safety circuits.
A temperature monitoring function prevents overheating of the device and the Ultrasonic head.
If the device malfunctions, the software stops the therapy and set all modules to a safe status. The fault is shown on
the display as an error status.
The device runs a divers self-tests (PROM Check, RAM test and Watchdog test) when switched on or after a therapy
program start to check of the important functionality. If a fault occurs, a fault display will be shown. The device can
only be switched off in this case.
The processor functions and the function of the DSPs are monitored by a watchdog. It monitors the program
operation and initiates a processor reset in the event of malfunction (such as an endless loop).
Safety Note
Do not touch modules or parts in the device when working on an open device with the power cable plugged in.
Electrical cables and wires may have a voltage up to 120V/ 240 V. Unplug power cable before opening and
closing the device.
10.1. Spare Parts Handling
Electronic spare parts, such as boards, must be handled in accordance with the general ESD guidelines
(electrostatic discharge)
The electrical parameters of new modules (e.g. CPU, etc.) supplied by Zimmer MedizinSysteme have been
present at the factory.
All boards must be inspected before installation (shipping damage, etc.).
Faulty board must be repaired by the manufacturer only. After replacing a module, the faulty part must be
labelled with the serial number of the device and returned to the manufacturer with the service report in
chapter 11.
10.2. Required Equipment
(Depending on error to look for)
¾
A workplace with antistatic protection
¾
A digital multimeter
¾
A oscilloscope – 20 MHz (digital or analog)
¾
Safety tester
Summary of Contents for SD Edition PhySys
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