Preva Installation/Service Manual, 00-02-1577, Revision E01
75
Troubleshooting
Electrical Performance Issues
Information
Electrical measurements require specific meter test probes. Use small test clips,
such as Pomona Electronics Minigrabber Test Clip Model 6248 or the equivalent.
Replacement Parts
• Kit, Power Supply Board 30-A2155
• Logic Board 30-08160
• Operator Panel Board 30-08054
• 25 foot Communication Cable E1-13003
• 6 inch Communication Cable E1-13004
• Rocker Switch E1-19026
• Yoke Cable Assembly 30-08071
• Tubehead Assembly 30-A1027
• Ribbon Cable Assembly 30-08072
Note
• If the Operator Panel Board 30-08054 is replaced, any customized technique
factors must be reprogrammed, as explained in the System Configuration
section.
• If the Logic Board 30-08160 or the Tubehead are replaced, and the firmware
revision is 5.0 or less, the system must be recalibrated. Contact Midmark
Technical Support for instructions.
The Preva system has the capacity to store electrical energy
during operation and after the system has been turned off.
•
The system will store energy for about three minutes after
removal from power lines.
•
Before attempting service within the system, observe the
green LED “D11” of the Power Supply Board. Illumination
represents the presence of stored energy.
•
As an added safety practice, measure for the presence of
DC voltage across TP8 and TP5 of the Power Supply
Board.
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