Kenwood TS-780 manual Trouble Shooting, Symptoms, Cause, Countermeasure

Page 23
SECTION 7. TROUBLE SHOOTING

i

 

,111 I., w, I., ,111 ,.I ,111 I., ,111 ,.I ,111 ,.,,,,, ,., ,111 I.4111, ,., ,u, I., ,,,,,., M,, m ,111 ,.I ,111 I.,,,w.

i

jll,ll.llllll.(lllll.~,,,,,.,,,,,,.,,,,,,.,,,,,,.,,,,,,.,,,~,,,,,,.,,,,,,.~,,,,,.,,,,,,.,,,,,,.,,,,,,.~,,,,,.~,,,,,.,,,,,,.,,,,,,.,,,,,,.,,,,,,.,,,,,,.‘,,,,,.~,,,,,.,,,,,,.‘,,,,,.,“,,,.,

I,,,,, * ,111,. ‘ ,,,,,&

i

SECTION 7. TROUBLE SHOOTING

:

i

 

 

 

 

 

 

 

 

 

SYMPTOMS

 

 

 

 

 

 

 

 

CAUSE

 

 

 

 

 

 

 

 

 

COUNTERMEASURE

 

 

 

N o

 

receiver

n o i s e

 

f r o m s p e a k e r

i n F M

Squelch

circuit

is ON.

 

 

 

 

 

 

 

Turn

SQUELCH

control counterclockwise.

 

 

mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transceiver is connected to antenna, but

1. A n t e n n a

c o n n e c t o r s

f o r

 

1 4 4 a n d

1. Check antenna and connect correctly.

 

 

n o

Signal

i s

r e c e i v e d ,

w h i l e

“ S ”

meter

 

4 3 0 M H z b a n d s a r e n o t c o n n e c t e d

 

 

 

 

 

 

 

 

 

pointer

remains deflected.

 

 

 

 

 

correctly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Squelch

is

ON.

 

 

 

 

 

 

 

 

2.

Turn

squelch

control

counterclockwise.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Microphone

PTT

switch

is

depressed.

 

3. Set PTT switch to receive Position.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Even

in

the

absence of

Signal,

“S”

meter

RF GAIN control is set too low.

 

 

 

 

Turn RF GAIN control fully

clockwise.

 

 

pointer

remains deflected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SSB Signal is being received but speaker.

Transceiver is set for opposite side band.

 

Set MODE switch to LSB or USB.

 

 

 

RIT

 

control

inoperative.

 

 

 

 

 

RIT switch

is

OFF.

 

 

 

 

 

 

 

 

Set RIT switch to ON (indication of digital

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

display remains the Same).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SSB

receive

Signal

is in

“high

Cut”

or “low

Maladjustment

of IF

SHIFT.

 

 

 

 

 

S e t

 

t h e c o n t r o l

i n t h e

Center

(detent)

 

 

Cut”.

 

~--.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Position.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No transmit output (SSB).

 

 

 

 

1. Poor contact of MIC

jack

or

plug.

 

 

1.

Connect the microphone

plug

securely.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

SSB

MIC

control

in

minimum

Position.

 

2. Turn SSB MIC control clockwise.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No transmit output (CW).

 

 

 

 

 

1. I m p r o p e r

c o n n e c t i o n

o f

K E Y

jack

or

1. Connect the KEY securely.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

poor

contact of KEY.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. CARL control in minimum

 

Position.

 

2. Turn CAR.L control clockwise.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No side tone

during

 

CW

Operation.

 

 

S-TONE control in minimum

 

Position.

 

 

Turn the S-TONE control clockwise.

 

 

 

 

 

 

 

 

 

 

 

 

No FM modulation or insufficient

modula-

FM-MIC control in minimum

Position.

 

Turn FM-MIC control clockwise.

 

 

 

tion.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

--~-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOX

not operating.

 

 

 

 

 

 

 

1. VOX switch is OFF.

 

 

 

 

 

 

 

1. Set VOX switch to ON.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

VOX

GAIN

control

in

minimum

Position.

2. Turn VOX GAIN control clockwise.

 

 

Sound Stops

when dial is turned quickly in

PLL unlock

circuit is

operating;

this is normal

and is not an indication of trouble.

 

 

 

F.STEP

ON.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C h a n n e l scanned

 

f i r s t

i s

n o t

c l e a r l y

When Signal is present in the first channel, the scan busy Stops

(FM, FM-CH mode). Set

 

 

indicated when MS switch is set to ON.

MS

switch

to

ON once again,

or

wait

until

the

scan

complets one cycle.

 

 

 

 

 

 

 

 

Scan does not continue when F.LOCK is

Scan Operation is effected even when F.LOCK is ON. The BAND UP/DOWN is possible

 

 

ON or BAND SW is depressed.

 

-

 

 

during

scan Operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

~-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UP/DOWN

Speed is

 

slow

when

dial

is

turn-

The Speed is

controlled

by

the dial.

 

 

 

 

 

 

 

 

 

 

 

ed during continued UP/DOWN of BAND.

 

 

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RX

frequency

which

 

is not shifted is

stored

Unshifted RX

frequency

is

stored

during

repeater

Operation.

 

 

 

 

 

w h e n T X f r e q u e n c y

i s s t o r e d

 

during

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

repeater

Operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When VFO A is 433.00 MHz and VFO B is

Repeater Operation at A-R and B-R is

complex.

Use the A or B Position.

 

 

 

 

1 4 5 . 0 0 MHz

during r e p e a t e r O p e r a t i o n ,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the display flickers (VFO A and B are in-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

d i c a t e d

a l t e r n a t e l y ) a t

function

A - R T X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF SET ” -” or ” + ” and REV SW ON.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When the power switch is set to OFF and

Set the power switch to ON more than 10 seconds after it has been set to OFF.

 

 

 

ON without using the backup circuit, VFO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and memory CH are not reset properly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When their

is

a faulty indication.

 

 

Set the

power

switch

to

OFF

(when

using

the

back-up

function,

this should be done after

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

removing the batteries), and reset it to ON after a few seconds. Check that the switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

has been correctly reset before inserting the batteries.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22

Image 23
Contents Page CONTENTS TRANSMITTER SPECIFICATIONSTS-780 GENERALSECTION 1. FEATURES 2-2.OPERATING LOCATION 2-l.ACCESSORIES2-3.CABLING FOR ANTENNA, POWER SUPPLY AND OTHERS 3-l.FRONT PANEL 7 REV Reverse Switch 3-2.REAR PANEL 3-4MICROPHONE 3-3.INTERNAL VIEWTS-780 4- 1. ANTENNAFig. 7 Adjustment of Antenna System 4-2.COAXIAL CABLE&ZA \ 5-l.OPERATING MODES5-2.FM MODE 5-3. SSB Mode “n ;,+;;,v 5-4IF SHIFT ControlReception 5-5CW ModeUse of RIT Switch Use of NB Switch5-9DIGITAL VFO 5-8BAND SWITCH UP-DOWN5-6VOX OPERATION 5-7READING THE FREQUENCIES5-13USE OF MEMORY 5-12USE OF F. STEP SWITCH5-10OPERATION OF 2 VFOs 5-11USE OF FM-CH5-14USE OF SCAN SWITCH j--------------1 5-15USE OF MS MEMORY SCAN SWITCH5-17BACKUP OF MEMORY CHANNEL FRE- QUENCY 5-l6 USE OF PRIO. M CHANNEL5- 19 REPEATER OPERATION 5-21AUX SOCKET 5-20OSCAR OPERATION0 Ham Clock HC-l0 0 Communication Headphones HS-40 High Class Communication Headphones HS-5 0 Communication Externat Speaker SP-71COUNTERMEASURE SECTION 7. TROUBLE SHOOTINGSYMPTOMS CAUSETS-780 K E N W O O DTS-780 70cm/2m-FM/SSB/CWInhaltsverzeichnis Technische DatenTeil 1 - Besondere Eigenschaften EinleitungTeil 2 - Betriebsvorbereitung It II il II /I !I I I ilTeil 3 - Bedienungsorgane und ihre Funktion Schalterstellungen und -funktionen Funktionen des MeßinstrumentsCoaxbuchse Typ N zum Anschluß von 70 cm-Antennen Fig. Anschluß einer Kombi-Antennean den TS-780 Teil 4 - Einbau und AnschlußFig. 8 - Antennenanschluß 1B. Antenna installationFig. 6 - Günstiger Antennenstandort Fig. 7 - AntennenanpassunglL.Millii Teil 5 - BedienungsanleitungFig. 9 - Voreinstellungen für FM-Empfang I11 Einstellung der Mikrofonverstärkung Fig. 10 - Einstellung bei Sendebetrieb6 Turn Fig. 13 - Einstellung des RF GAIN-ReglersFig. 14 - Wirkungsweise der Zf-Shift 4 M eterFig. 15 - Semi break-in-Betrieb Tabelle TabelleTabelle TabelleStellung des Schalters SCAN W Fig. 15 - Eingabe von Frequenzen in die MemoriesFig. 16 - Abrufen gespeicherter Memory-Frequenzen Stellung ,,10 MHz” Fig. Stromversorgungskabel für Mobilbetrieb Fig. 19 - Zusatzbuchse AUX Teil 6 - Lieferbares SonderzubehörFig. Typischer Transceive-Betriebüber OSCAR-SatellitFestgestellte 75035,Telex:410817triod Page Page Page Page Page Page Page Page X50-1790-00 TOP & BOTTOM INTERNAL VIEWSA V R unit X43-1420-00 Control unit PLL unit X50-1770-00 IF unit X48-1350-61 4 3 0 H E T unit