Maintenance - Kenwood TM-721A Instruction Manual

6. MAINTENANCE
6-1. GENERAL INFORMATION
Your transceiver has been factory aligned and tested to
specification before shipment. Under normal cir-
cumstances the transceiver will operate in accordance with
these operating instructions. 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 authoriza-
tion can void the transceiver's warranty.
When operated properly, the transceiver will provide many
years of service without requiring realignment. The infor-
mation in this section gives some general service pro-
cedures which can be accomplished without sophisticated
test equipment.
6-2. SERVICE
Should it ever become necessary to return the equipment
to your dealer or service center for repair, pack it in its
original box 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.
Caution:
Do not pack the equipment in crushed newspapers for ship-
ment. Extensive damage may result, during shipment.
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Service note:
Dear OM, if you desire to correspond on a technical or
operational problem, please make your note short, com-
plete, and to the point, and PLEASE make it readable.
Please Jist: Model and Serial Number
The problem you are having.
Please give sufficient detail to diagnose. Information such
as other equipment in the station, meter readings and
anything else you feel might be useful in attempting
diagnosis should be included.
Notes:
1. Record the Date of Purchase, Serial Number and Dealer
from whom purchased.
2. For your own information, retain a written record of any
maintenance performed on the unit.
3. When claiming warranty service, a photocopy of the bill
of sale, or other proof of purchase showing the date of
sale must accompany the radio.
6-3. CLEANING
The knobs, front panel and cabinet of the transceiver are
likely to become soiled after extended use. The knobs
should be removed from the transceiver and cleaned with a
neutral soap and warm water. Use a neutral soap (no harsh
chernicals) and a damp cloth to clean the cabinet and front
panel.