Kenwood KTF-2010, KTF-3010 Service manual

AM-FM STEREO SYNTHESIZER TUNER

HIGH BLEND

WIDE

NARROW

RF ATT

AUTO/MANUAL

/CLEAR

ACTIVE

RECEPTION IF BAND

TA/NEWS

PTY/

PTY SEARCH

RF ATT

DISPLAY

ANT A/B

MEMORY

FM STEREO SYNTHESIZER TUNER

KTF-2010

BAND

P. CALL

DOWN UP

TUNING/MULTI CONTROL

3 4 5 6 7 8 9

0/CHARA

ON/STANDBY

ANTENNA

GND

FM 75Ω

SYSTEM

CONTROL

OUTPUT

SL16 XS 8

KTF-2010/3010

SERVICE MANUAL

Illustration is KTF-2010.

KENWOOD badge (B43-0302-04)

Metallic cabinet (A01-3559-01)

Panel (A60-1336-02)

Phono jack (E63-0068-15)

Front glass * (B10-)

Knob (K29-6882-03)

Miniature phone jack (E11-0188-05)

Knob (K29-6883-04)

AC power code* (E30-)

Lock terminal board (E20-0321-05)

How to reset the microcomputer

The microcomputer may malfunction (impossibility operation,erroneous display,etc.)when the power cord is unplugged and plugged in again while the unit is in ON mode with the Key pressed or due to other extern al causes.In this case,execute the procedure on the right to reset the microcomputer and return the unit to the normal condition

Slide switch (S31-2132-05)

Power cord bushing (J42-0083-05)

* Refer to parts list on page 18.

➀ Unplug the power cord form the wall outlet. ➁ While pressing and holding the (ON/STANDBY) key,

plug the AC cord into the wall outlet again

•Resetting the microcomputer clears the memory you entered and returns in to the initial condition when the unit left the factory.

TUNED AUTO kHz MHz

STEREOSTANDBY ANT A BMEMOTA NEWS TP PTY

RDS EON

** * ** * * *.

LW FM

HIGH BLEND

WIDE

NARROW

RF ATT

TUNING MODE

/CLEAR

ACTIVE

RECEPTION IF BAND

TA/NEWS

PTY/PTY SEARCH

RF ATT

DISPLAY

ANT A/B

MEMORY

FM STEREO SYNTHESIZER TUNER

KTF-3010

BAND

P. CALL

DOWN UP

TUNING/MULTI CONTROL

3 4 5 6 7 8 9

0/CHARA

ON/STANDBY

STANDBY indicator

RDS indicator

AR indicator

TA indicator TP indicator MEMORY indicator

PTY indicator Antenna A/B indicator

Kilohertz indicator

Frequency display Preset channel display STATION NAME display

Magahertz indicator

Receiving band indicatorSignal indicator

EON indicator

Tuning mode indicator

TUNED indicator

Reception mode indicator

NEWS indicator

1 2

6 7

Display

AUTO/MANUAL with the KTF-2010

KTF-2010/3010

ACCESSORIES / CONTROLS

Accessories

• AM loop antenna ass'y........1

(T90-0195-05)

Controls

• Loop antenna stand (J19-3645-05)

• Lead wire antenna...................1

(T90-0809-05)

• System control cord ................1

(E30-2733-05)

• Audio cord...............................1

(E30-0505-05)

• AC plug adapter......................1

(E03-0115-05) (M type only)

POWER key

Press to turn on/off the power.

ACTIVE RECEPTION key(KTF3010 only)

Press to obtain the optimum reception conditions for the signals being received.

IF BAND key(KTF-3010 only)

Press to the intermediate frequency pass band between WIDE(wide band) and NARROW(narrow band).

RF ATT(KTF-3010 only)

Press to minimize the RF reciprocal modulation and mixed modulation distortion when there is an adjacent channel with strong.

ATT A/B key(KTF-3010 only)

Press to select the antenna when using 2 antennas.

HIGH BLEND indicator(KTF-3010 only)

WIDE indicator(KTF-3010 only)

NARROW indicator(KTF-3010 only)

RF-ATT indicator (KTF-3010 only)

AUTO/MANUAL key(KTF-2010) TUNING MODE key(KTF-3010)

Press to select the tuning mode.

BAND key

Press to switch the broadcast band.

TUNING/MULTI CONTROL knob

Used for tuning broadcast stations, selecting the program type and entering characters.

TA/NEWS key

PTY/PTY SEARCH key

DISPLAY key

MEMORY key

Used for storing broadcast stations and entering station names.

Numeric keys

Used for storing and calling up broadcast stations and entering station names.

P.CALL key

Press to recall a preset station.

Illustration is KTF-3010.

HIGH BLEND

WIDE

NARROW

RF ATT

TUNING MODE

/CLEAR

ACTIVE

RECEPTION IF BAND

TA/NEWS

PTY/

PTY SEARCH

RF ATT

DISPLAY

ANT A/B

MEMORY

FM STEREO SYNTHESIZER TUNER

KTF-3010

BAND

P. CALL

DOWN UP

TUNING/MULTI CONTROL

3 4 5 6 7 8 9

0/CHARA

ON/STANDBY

ANTENNA

GND

FM 75Ω

SYSTEM

CONTROL

OUTPUT

SL16 XS 8

KTF-2010/3010

EXTERNAL VIEW

KENWOOD badge (B43-0302-04)

Metallic cabinet (A01-3559-01)

Panel (A60-1357-02)

Phono jack (E63-0068-15)

Front glass (B10-2449-03)

Knob (K29-6928-03)

Miniature phone jack (E11-0188-05)

Knob (K29-6883-04)

AC power code* (E30-)

RF coaxial cable receptacle (E04-0025-05)

Lock terminal board (E20-0321-05)

Slide switch (S31-2132-05)

Power cord bushing (J42-0083-05)

* Refer to parts list on page 18.

KTF-2010/3010

CIRCUIT DESCRIPTION

1. Test mode

1-1. Test mode with the main unit keys a) Setting procedure

• While pressing the [P.CALL] key, plug the AC power cord to the power outlet.

b) Cancellation

• Unplug the AC power cord. The initial setting will take effect and the test mode will be canceled.

c) Description

Auto POWER ON

• When the AC power cord is plugged while pressing the [P.CALL] key, the POWER will turn ON and all function will be at the initial setting.

ALL LED ON mode

• When the AC power cord is plugged while pressing the [P.CALL] key, all the LEDs will turn ON. Any key operation on the main unit thereafter will return the LEDs to normal.

Main unit key validity check

• Whether the main unit's keys are operable (valid) can be checked. Regarding the keys whose display does not change when they are used, their display will be made to change.

0~9, +10 key operation

• Preset display : "– –" or "01" ~ "09"

When "0" key is pressed, 10 ch is called. When "1" ~ "9" key is pressed, 1 ch ~ 9 ch is called. When "+10" key is pressed, "1-" is displayed.

• Preset display : "1 -" or "10" ~ "19"

When "0" key is pressed, 20 ch is called. When "1" ~ "9" key is pressed, 11 ch ~ 19 ch is called. When "+10" key is pressed, "2 -" is displayed.

• Preset display : "2 -" or "20" ~ "29"

When "0" key is pressed, 30 ch is called. When "1" ~ "9" key is pressed, 21 ch ~ 29 ch is called. When "+10" key is pressed, "3 -" is displayed.

• Preset display : "3 -" or "30" - "39"

When "0" key is pressed, 40 ch is called. When "1" ~ "9" key is pressed, 31 ch ~ 39 ch is called. When "+10" key is pressed, "0 -" is displayed.

MUTE signal output

• The MUTE signal is not output.

No Display for FL

• Press the DISPLAY key to turn on/off the segments of the FL.

Slide Switch Check

•The FL shows the Serial Code(XS8/SL16) by pressing the MEMORY key.

•The FL shows the Channel Space(100kHz/50kHz) by pressing the CH. SPACE key.

•The FL shows the normal mode by pressing the key and the switch except the MEMORY and the Slide switch.

Display ex.

Serial Code Channel Space XS8(or SL16) 100(or 50)

1-2. Test mode with serial communications

Refer to the test mode serial code table.

a) Setting procedure

• Plug the AC power cord and enter the TEST ON code.

8 bit serial communications : 71H 16 bit serial communications : 0C2FFH

b) Cancellation

• Enter the TEST OFF code (0CFEH) or unplug the AC power cord.

c) Description

Other operations during the serial test mode

• The main unit's keys will be effective.

• The serial test code can be received even within 1 second of POWER ON / OFF.

Required operations for the serial test mode

• The serial code for the serial test mode can be used to check the operation of all circuits.

• The code entered during the serial test mode will become valid regardless of the display mode.

• The following functions are available in the serial test mode.

0 ~ 9, +10 AUTO (AUTO ST. / HI BLEND / MONO) MEMORY UP / DOWN (MANUAL SCAN unnecessary) IF BAND, RF ATT ACTIVE RECEPTION ANTENNA A, ANTENNA B, PTY, DISPLAY, ALL LED ON/OFF

• The MUTE signal is not output. This is for reducing the input-output switching time during the measurement.

• When a valid serial code for the test mode is received, the code identical to the code entered will be output.

• For checking the MUTE operation, MUTE has specific codes.

MUTE ON/OFF

• To switch cyclically, enter the individual serial code. For example for AUTO STEREO / MONO, enter the two codes for AUTO STEREO and MONO.

• All the LEDs, turn ON / OFF is cancelled by inputting the cancelling code and returned the LEDs to normal.

• All functions (including the test mode) will be initialized.

KTF-2010/3010

CIRCUIT DESCRIPTION

1-3. Initial settings a) Setting procedure

• If the unit has a back-up function, hold down the POWER key and plug the AC power cord.

• During the test mode with the main unit keys and the test mode with serial communications, the initial settings can be obtained by unplug and plug the AC power cord.

b) Description

• All function (including test mode) will be initialized.

• The manufacturer's memory is always set in the preset CH and area.

1-4. POWER ON startup

• Since the unit has a POWER key, no setting is required.

1-5. Initial status

POWER ON/OFF : OFF TUNING MODE : AUTO PRESET MEMORY : TEST FREQUENCY LAST BAND : FM FM LAST FREQUENCY : OVERSEAS 87.5MHz

/JAPAN 76.0MHz

AM.MW LAST FREQUENCY : CH SPACE 9K 531kHz

: CH SPACE 10K 530kHz LW LAST FREQUENCY : 153kHz LAST P.ch : [--ch]

RDS DISPLAY MODE : FREQUENCY DISPLAY

MODE TA / NEWS / TA, NEWS : OFF ACTIVE RECEPTION : OFF ANT A/B : A IF BAND : WIDE RF ATT : OFF SERIAL : XS8

1-6. Back-up status

POWER ON/OFF TUNING MODE PRESET MEMORY 1~40ch LAST BAND LAST P.ch LAST FM FREQUENCY LAST AM (MW) FREQUENCY RDS AUTO MEMORY LIST LAST LW FREQUENCY ACTIVE RECEPTION ANT A/B** IF BAND** RF ATT** TA / NEWS / TA, NEWS* PS STATION NAME*

* : E, T type ** : KTF-3010

1-7. 16-bit serial test code (C2XXH)

8 9 A ..... F

0 POWER OFF 0 MEMORY 1 POWER ON 1 2 MUTE OFF 2 3 MUTE ON 3

AUTO STEREO

4 5 MONO 5 PTY 6 6 DISPLAY 7 7

Active reception OFF

Active reception ON

9 A RF ATT OFF +10 B RF ATT ON BAND FM C IF WIDE D BAND LW HI BLEND Initial setting

IF NARROW

E F TUNING UP TEST ON

Note : Pls KT-2080/3080 service manual (B51-5128-00) on test frequency table and channel space table.

8 ATENNA B 9

BAND AM/MW

TUNING DOWN

: KTF-3010 ONLY

ATENNA A

All LED goes OFF All LED goes ON All LED ON : OFF

All LED ON :ON

TEST OFF

KTF-2010/3010

ED 1

HIGH BLEND LED

ATT LED

NARROW LED

WIDE LED

Q1, 2

Q3, 4

Q10

ANTENNA A/B

RF ATT

IF BAND

HIGH BLEND

TUNING

STEREO

L_LEVEL

S_LEVEL

TUNER MUTE

POWER

uPD780206GF031

u-COM

ENCODER

RESET OSCILLATOR SERIAL

CHIP ENABLE

XS8 / SL16 KTF-2010/3010

IC 9

KEY MATRIX

RDS DEMODULATOR IC

FL DISPLAY

PLL IC

IC 7

IC 2

S 26

CIRCUIT DESCRIPTION

2. Microprocessor : µPD780206GF031 (IC9)

2-1. Pin connection

KEY MATRIX

KS1

(#82)

KS2

(#81)

KS3

(#80)

KS4

(#78)

KS5

(#77)

RECEPTION

means KTF-3010 ONLY

KR1 (#70) KR2 (#69) KR3 (#68) KR4 (#67) KR5 (#66) KR6 (#65)

ANT A/B ON / STANBY MEMORY 4 8 P.CALL

ACTIVE

RF ATT TA / NEWS 2 6 0 +10

IF BAND DISPLAY 3 7 - TUNING MODE

DSW0 (D56) DSW1 (D57) DSW2 (D58) - - -

PTY 1 5 9 BAND

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