SECTION 4 - ADDITIONAL INFORMATION
4-1 General Information
Your TR-7800 has been factory aligned and tested to specification before shipment. Under normal
circumstances. the transceiver will operate in accordance with these operating instructions.
If your transceiver fails to work, contact the authorized dealer from which you purchased it for quick, reliable repair All
adjustable trimmers and coils in your transceiver were preset at the factory and should only be readjusted by a qualified
technician with proper test equipment Attempting service or alignment without factory authorization can void the
transceiver's warranty.
4-2 How the TX Final Module are Protected
Final module protection is provided by sampling the reflected power. As the reflected power is increased (higher
SWR) transmitter drive is reduced, thus decreasing input to the final module. This in turn reduces collector loss.
protecting the final transistors.
4-3 Battery Precaution
When charging your vehicle battery, or when jump-starting a dead battery ALWAYS disconnect the power
lead from the back of the transceiver.
4-4 Ordering Spare Parts
When ordering replacement or spare parts for your equipment, be sure to specify the following:
Model and serial number of your transceiver. Schematic number of the part. Printed circuit board number on which
the part is located. Part number and name, if known, and Quantity desired.
Note:
A full service manual is available as a separate publication.
4-5 Service
Should it ever become necessary to return the equipment for repair, pack in its original boxes and packing, and
include a full description of the problems involved. Also include your telephone number. You need not return accessory
items unless directly related to the service problem. Tag all returned items with your call for easy I.D. Please mention the
model and serial number of your radio in any correspondence, whether phone or written. For future reference, record
this information in the space provided on the back cover of this manual.
Note:
When claiming warranty service, please include a photocopy of the bill of sale; or other proof of
purchase showing the date of sale.
