General Information, Service, Cleaning

5-1. GENERAL INFORMATION

Your transceiver has been factory aligned and tested to specification before shipment. Under normal circum- stances the transceiver will operate in accordance with

these operating instructions. All adjustable trimmers and coils in your transceiver were preset at the facto- ry and should only be readjusted by a qualified techni- cian with proper test equipment.

Attempting service or alignment without factory

authorization can void the transceiver's warranty.

When operated properly, the transceiver can give years of service without requiring realignment. The informa- tion in this section gives some general service proce-

dures which can be accomplished without

sophisticated test equipment.

5-2. SERVICE

Should it ever become necessary to return the equip- ment to your dealer or service center for repair, pack 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.

You may return your radio for service to the Autho-

rized TRIO-KENWOOD Dealer from whom you pur- chased it. A copy of the service report will be returned

with the unit. Please do not send sub-assemblies or printed circuit boards. Send the complete unit, in its original boxes and packing.

Tag all returned items with your name and call for iden- tification. Please mention the model and serial num- ber of your radio in any correspondence, whether phone or written. For future reference, record this in-

5-4. IN CASE OF DIFFICUL TV

The problems described in this table are failures caused in general by improper operation or connection of the

RECEPTION

formation in the space provided on the back cover of this manual.

Service note:

Dear OM, if you desire to correspond on a technical or operational problem, please make your note short, complete, and to the point. And PLEASE make it readable.

Please list: Model and serial number.

The question or problem you are having. Please give sufficient detail to diagnose: other equip- ment in the station, meter readings and anything you feel might be useful in attempting diagnosis.

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, please include a photocopy of the bill of sale, or other proof of pur- chase showing the date of sale.

5-3. 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 (not harsh chemicals) and damp cloth to clean the cabinet and front panel.

transceiver, not by defective components. Examine and check according to the following table. If the problem persists, contact an authorized agent or serv- ice station.

Symptom

Indicators do not light and no receiver noise is heard when the POWER switch is turned on.

Nothing is displayed or wrong digits are displayed when the POWER switch is turned on.

I'JOsignal IS received even when the

antenna is connected.

An antenna is connected, but no sig nal is received and the S-meter fully deflects.

Probable

cause

Correctiveaction

Bad

power

cable

connections,

Check

cables and

connections.

Blown power supply fuse.

Check for the cause of the blown fuse

Power supply

OFF.

and replace

the fuse.

The

microprocessor

malfunctions.

ThiS;

1. Adjust the supply voltage to nominal

occurs

when

the

battery

is old or

the

sup-

voltage

:f: 10V with

use

of a

boost-

ply

voltage

drops

extremely

on the

occa-I

ing transformer.

sion

consuming

large

current.

Use a

12 to

16V

battery.

2. Turn the POWER switch on again.

1. ~UL control tully clockwise.

1. Turn

the

SQL

control

counter-

Microphone

PTT switch

is in the

trans-

clockwise.

mit

position,

and the TS440S

is in the

2.. Set the PTT switch

the

receive

transmit

mode.

positon.

3. SELECTIVITY switch is set to "N" or 3. Ensure the SELECTIVITY switch is set

"M 1"	and no optional filter is installed.		to	either	"AUTO",	"M2",	or "W"
tit- control	IS too	lOW. decreasing the high	I urn	the RF	gain control	fully	clockwise.
~requency	circuit	gain.!