CTI Products TSAM Transmitter Steering & Audio Matrix - Manual (Page 69)

TSAM Installation and Maintenance Rev. 2.10 Chapter 8
CTI Products, Inc. Maintenance Theory
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8. Maintenance Theory
The TSAM is just one component in a sophisticated radio control system. The maintenance information is
intended to allow field service personnel to quickly isolate faults to the TSAM subsystem. Further
information is provided to allow a problem to be isolated to a particular TSAM board. The board may
then be changed in the field. After any board change, verification of the system levels should be
performed.
A troubleshooting flow chart is located at the end of this section. This flow chart allows quick isolation to
a particular TSAM board or subsystem. Boards are serviced at the factory on a module exchange basis.
For factory service write or call the number below:
CTI Products, Inc.
ATTN: Engineering Department
1211 West Sharon Road
Cincinnati, Ohio 45240
USA
+1 513 595-5900
8:30AM - 5:00PM Eastern time
In addition to board level maintenance information, more detailed technical information is covered. Using
this information with diagnostic and trouble shooting techniques presented here, technical personnel can
quickly isolate the trouble to a particular TSAM subsystem.
Detailed theory of operation and schematic diagrams provide the additional information required to service
individual TSAM subsections to the component level. Some circuit subsystems may be more cost
effectively serviced at the factory service center.
All TSAM circuitry is contained on two printed circuit boards (PCBs). The TSAM-T1 board (transmitter
audio board), and the TSAM-R1 board (receiver audio) board. The receiver audio board is used for
secondary operation only.
8.1 Re-Initializing the TSAM-T1 Transmitter Board
If troubleshooting procedures indicates a MCU subsystem failure, then re-initialization of the MCU should
be attempted before replacing the board. If system critical MCU parameters have been corrupted, the
MCU subsystem can fail. The MCU initialization restores all EEPROM parameters to the default values.
To re-initialize the MCU subsystem, connect a terminal to the programming port. Install jumper E113 on
the TSAM-T1 board. Reset the MCU. If the MCU is functional, a message indicating MCU status will
appear on the terminal. Follow the on screen instructions to complete initialization and return the MCU to
normal operation.