Kenwood Krc-2001 User manual

KENWOOD

KRG-200'

STEREO

CASSETTE

RECEIVER

Knob

Knob Knob

ob

Kn

:

188804)

(K27-1581-04)

(K27-1580-04)

(K27-1579-04)

—

{K29-1

889-04)

Knob

Dressing

pane!

LCD

Assy

Knob

(K29-1888-04)

(A21-0493-03)

(B38-0066-05)

(K29-1888-04)

Heat

sink

(FO1-0681-03)

E

'

2

e-

—-————-

Cord

with

connector

(E30-1430-15)

Cord

with

plug

(E30-1429-05)}

Cord

with

DIN

connector

(E30-1431-15)

ee

DISASSEMBLY

FOR

REPAIA

DISASSEMBLY

FOR

REPAIR

1.

Remove

4

screws

retaining

the

top

cover

and

pull

it

up

(0.8)

2.

Remove

4

screws

and

remove

bottom

plate

(‘O.

8)

3.

Remove

4

screws

and

remove

the

panel

assy

([email protected])

4,

Remove

4

screws

retaining

the

mechanism

and

pull

©

out

the

connectors

(@,.@.@)

©

5.

Remove

the

nuts

from

the

axis

and

take

off

the

solder

from

the

PCB

and

pull

out

the

connector

(@.

@.

®)

more

than

Tem

|

KRG-2001_

DISASSEMBLY

FOR

REPAIA

6.

Pull

out

the

PCB

from

the

bottom

main

PCB

(®.

@.

®)

7.

Removes

the

screw

of

display

assy

(

(B

)

and

remove

six

screws

of

heat

sink(

@&

.

)

Remove

the

screw

(

&®

)

and

pull

out

the

connector

®

(@

)

8.

Remove

the

screws

(

@)

)

and(

@

)

XIMLVW

Aa

ZLZLINW

Adv

ZHOOv

wy

ao7

=z

Y3TIONLNOD

Tid

"A8Q

ZH4

GL

‘ZH

L

W4

‘S47

(adv)

Augc

WV

AWip

WV

AWOLE

AW

oZ

W4

AUOPL

WI

AY

8Z

SaPOL—

AWTL

AdvL

AYLEL

3IdVL

sap

t€—

Nid

ds

()

dV

LNdLno

HATIONLNOO

YN

(-L

LX)

Got

[f

dy

03

H-

eae

(LEX)

£91

ma

=

Y¥aNNL

WV

dS)

¥yadvs

WaMOd

dINV

H3MOd

iv

3NOL

Q

bul

(-L

LX)

(-VLX)

2°

LOt

(-LLX)

994

(-L

LX)

vol

<I

XdN

130/dl

QN3

LNOY4

Wd

(-L

LX)

291

(-LLX)

LOI

BLOCK

LEVEL

DIAGRAM

AU

6S

AW

OO

sgP

SLE—

sap

GOt—

inv

ZN

)

KRe-2001

CIRCUIT

DESCRIPTION

Description

of

components.

CONTROL

UNIT

(X11-2230-10)

Components

Application/Function

_

Operation/Condition/Compatibility

Qi

LO/DX

SW

Q2

FM

IF

AMP

LOUDNESS

SW

FM

IF

AMP/DET

FM

MPX

NR

CONTROLL

DIN

OUT

AMP

TONE

AMP

EQ

AMP

SYNTHESIZER

UNIT

(X14-1870-10)

Application/Function

Operation/Condition/Compatibility

AGC

CUT

ee

OT

ey

|_a2_

|

~_STATION

DeTECT

|

Tuned

ONWhenthebroadcastsignalisreceved.

}__03,4

|

FM

BAND-WIDTH

SW

|

Tuned

ONwhen

SEEK

operation

seeking)

pa

OR

NS

ee

i

OR

NETS

ee

eo

eel

|

os

ag

TUNER

+B

SW

Turned

ON

when

TAPE mode

FM

+B

SW

Q10

AM

+B

SW

Q11,

12

ACC

AVR

(+9

V)

Q13

TAPE

+B

SW

L.P.F

DC

AMP

BACK

UP

AVR

(+5

V)

CE-CONTROL

MUTING

EQ

MUTE

DRIVER

TAPE

MUTE

DRIVER

MUTE

DRIVER

MUTE

DRIVER

AGC

CUT

Turned.

OFF

when

ACC

is

ON

For

equalizer

amp.

Turned

ON

when

Radio

mode,

FF/REW

mode.

Turned

ON

when

FF/REW

mode

For

power

amplifier.

Turned

ON

when

ACC

is

ON.

MICROPROCESSOR

POWER

AMP

(1/4)

F/R

indicator,

(2/4)

ST

indicator,

(3/4)

STATION

DETECT

indicator,

(4/4)

TAPE

MODE

indicator

(1/4)

MEMORY

switch,

(2/4)

MANUAL

DOWN

switch,

(3/4)

MANUAL

UP

switch,

(4/4)

SEEK

switch

AND

IC

AND

IC

KRC-2001

CIRCUIT

DESCRIPTION

AND-GATE

FOR

CPU

KEY

MATRIX

OPERATION

DESCRIPTION

A

7-—-

GND

a

B

14*---

Vpp

(5

V)

—

Vpp

(5

Vv)

A

—

OV

B

Qa

CPU

Key

Matrix

Operation

The

source

clock

from

the

CPU

is

input

to

A-input

via

the

AND-GATE

at

any

time

to

apply

the

control

signal

to

B-

input.

When

the

signal

is

input

to

B-input,

the

output

Q

goes

high

and

input

as

the

CPU

key

input.

When

the

B-input

is

low

level,

output

O

is

always

low.

Output

Q

is

synchro-

nized

with

input

A.

CIRCUIT

DESCRIPTION

Synthesizer

Unit

u.-Com:

«PD

1708G

FUNCTION

OUTLINE

Receiving

frequency,

Channel

spacing,

Reference

frequency,

Intermediate

frequency

FM

band

Frequency

range

Channel

spacing

Reference

frequency

Intermediate

frequency

87.9

~107.9

MHz

200

kHz

25

kHz

10,700

87.50~108.0

MHz

*

60

kHz

12.5

kHz

10,700

*

MANUAL

25

kHz

AM

band

Frequency

range

Channel

spacing

Reference

frequency

Intermediate

frequency

530

~

1620

kHz

10

kHz

10

kHz

450

kHz

522~1611

kHz

9kHz 9kHz

450

kHz

163~281

kHz

*

QkHz

1

kHz

450

kHz

*

MANUAL

1

kHz

Tuning

Function

{1)

Auto

Tuning

(Sawtooth

wave

mode)

Seek

Up:

Once

a

station

is

tuned,

it

is

held

tuned.

(2)

Manual

Tuning

(Sawtooth

wave

mode)

Manual

Up/Down:

Frequency

is

advanced

up

or

down

in

steps

by

pressing

the

push

switch.

Pressing

for

a

half

second

or

more

advances

it

up

or

down

continuously

until

the

switch

is

released.

(3)

Preset

Memory

Recall

6

stations

on

each

FM,

MW,

and

LW

band

can

be

preset

independently

with

the

6

buttons.

The

last

sta-

tion

is

stored

in

memory

for

each

band

when

power

is

turned

off.

Tape

Function

(1)

Tape

running

indicator

(2)

METAL

control

(3))

DOLBY

contro!

Radio

Function

(1)

LOC

(local)

contro!

(2)

MONO

control

Clock

Function

(1)

12-hour

display

Other

Functions

(1)

LOUDNESS

control

(2)

NR

(noise

reduction)

control

KAC-2001

CIRCUIT

DESCRIPTION

TERMINAL

DESCRIPTION

Terminal

Configuration

(Top

View)

[+7

26

a

P)

7)

24

[+23

ees

PY

uPD1708G-618-00

p21

(TOP

VIEW)

[_____}

20

[___}19

fT

C—i*d‘O'V

dA

16

[715

14

Name

LCD4

KS,

(PB,}

LCD3

KS,

(PBo)

LCD2

BANDZ/N.R

LCDi

METAL-LOC

COM2

LOUDNESS

COM1

5G

|e

|~|o

lor]

a]

|

|=

CE

*

Xl

XO

AF

MUTE

(PA3)

BAND

1

(PA,)

KS,/K;

(PA,)

KS,/K,

(PA,)

Ks

Ky

K,

Ko

KS,

(PB,)

KS,

(PB,)

8

*

Not

used.

description

KRG-2001

CIRCUIT

DESCRIPTION

Name

Description

LCD

segment

signal

LCD

segment

signal

output

(1/2

duty,

1/2

bias

LCD

should

be

used.

Frame

frequency:

100

Hz,

Drive

voltage:

VDD)

LCD

common

signal

LCD

common

signal

output

Power

input

Device

power

supply

pins

During

device

operation,

5

V

+

10%

voltage

is

supplied

via

these

pins.

Either

of

them

can

be

used

for

supplying

the

power

individually.

The

rising

time

of

VDD

should

be

less

than

500

ms

(0

to

4.5

V).

When

the

rising

time

is

too

long,

or

when

the

VDD

is

not

lowered

completely

to

O

V

and

then

raised

to

4.5

V

from

the

voltage

lower

than

the

operating

rate,

the

diode

switch

condition

for

initialization

is

not

read

out

correctly.

In

such

cases,

use

the

CE

so

that

the

diode

switch

status

can

be

read

out

for

initialization.

FM

VCO

input

This

inputs

the

FM

station

output

signal.

Since

it

incorporates

the

AC

amp,

cut

the

DC

signal

with

the

capacitor.

AM

VCO

input

This

inputs

the

AM

station

output

signal.

Since

it

incorporates

the

AC

amp,

cut

the

DC

signal

with

the

capacitor.

Ground

Connect

to

the

ground

terminal

of

the

set.

Error

Out

AF

MUTE

Charge

pump

output

of

the

phase

detector

consisting

of

PLL.

When

the

frequency

divided

by

the

oscillating

frequency

is

higher

than

the

reference

frequency,

these

pins

output

high

level

signals,

and

when

it

is

lower

than

the

reference

frequency,

they

go

low.

When

the

frequency

(divided

by

the

oscillating

frequency)

is

coincided

with

the

reference

frequency,

it

enters

into

the

floating

status.

Chip

Enable

Crystal

resonator

Mute

Out

This

pinis

used

to

input

the

selected

signal

from

the

device.

When

operating

the

PLL

section,

this

goes

high,

and

when

the

PLL

section

is

stopped,

it

goes

low.

When

at

low

level,

the

display

goes

off.

However,

a

low

level

signal

below

134

us

or

high

level

signal

is

not

accepted.

Connectors

of

the

crystal

resonator.

Connect

the

4.5

MHz

crystal

resonator.

This

outputs

the

muting

signal

to

eliminate

shock

noise

when

the

PLL

is

unlocked

and

pop

noise

when

switching

between

Tape

and

Radio,

and

is

active

low.

(CMOS

output)

For

timing

details,

refer

to

the

AF

Mute

Out

Timing

Chart.

When

the

CE

is

low,

this

is

active

low.

Band

Out

FM/MW

switching

output

FM:

High

MW:

Low

When

the

MODE

switch

is

set

to

“1”

(Tape

mode),

this

is

low.

When

the

SDK

is

provided,

follow

the

SDK

section.

Key

return

signal

source

and

Key

return

signal

input

This

becomes

the

source

of

key

return

signal

to

read

out

the

diode

matrix

for

initialization

only

when

the

power

is

turned

on

for

the

first

time

(rising

time

of

VDD}

or

when

the

set

is

returned

from

the

back-up

condition

(CE:

Low

to

High).

Then,

this

inputs

the

key

return

signal

for

the

key

matrix.

Insert

the

pull-down

resistor.

(CMOS

input

/output)

Key

return

signal

source

and

Key

return

signal

input

This

becomes

the

source

of

the

key

return

signal

to

read

out

the

diode

matrix

for

initialization

only

when

the

power

is

turned

on

for

the

first

time

(VDD

rising

time)

or

when

returning

from

the

back-up

condition

(CE

goes

high

from

low).

Then,

this

inputs

the

key

return

signal

for

the

key

matrix.

Insert

the

pull-down

resistor.

{CMOS

input

/output)

Key

return

signal

input

This

inputs

the

key

return

signal

for

the

key

matrix.

Insert

the

pull-down

resistor.

(CMOS

input)

Key

return

signal

source

This

outputs

the

key

return

signal

for

the

key

matrix.

Since

the

synchronous

current

is

greatly

lowered

because

of

its

configuration,

the

reverse-current

prevention

diode

will

be

not

necessary

for

the

key

source

side.

(CMOS

output)

METAL/DX/LOC

|

LOC

Out

In

radio

mode:

DX/Local

On/Off

output

When

“LOC”

is

displayed

on

the

LCD

panel,

high

level

signal

is

output.

When

it

is

not

lit,

low

level

signal

is

output.

(When

the

power

is

turned

on,

low

level

status

is

initialized.)

In

tape

mode:

METAL

On/Off

output

When

“METAL”

is

displayed

on

the

LCD

panel,

low

level

signal

is

output.

When

it

is

not

lit,

high

level

signal

is

output.

On

initialization

when

the

tape

power

is

turned

on,

high

level

is

output.

10

CIRCUIT

DESCRIPTION

Name

Symbol

Description

LOUDNESS

Loudness

Out

LOUDNESS

output

When

“LOUD”

is

displayed

on

the

LCD

panel,

low

level

signal

is

output.

When

it

is

not

lit,

high

level

signal

is

output.

When

the

power

is

turned

on

first

(VDD

rising

time),

low

tevel

signal

is

output.

(CMOS

output)

BAND2/NR

When

Band

A

is

“0”

or

“1”

and

the

NR

selector

is

“1”,

this

functions

as

the

NR

on/off

output

pin.

When

“NR”

is

dis-

played

on

the

LCD

panel,

high

level

signal

is

output.

When

it

is

not

lit,

low

level

signal

is

output.

This

pin.can

be

operated

in

the

TAPE/RADIO

mode.

On

initialization

when

the

power

is

turned

on,

this

is

at

low

level.

When

BAND

A

is

“0”,

“1”

and

the

NR

selector

is

“O”,

this

function

as

the

WIDE-ADV

on/off

output

pin.

@

Inthe

Radio

mode:

This

functions

as

the

WIDE

on/off

output

pin.

When

“WIDE”

is

displayed

on

the

LCD

panel,

high

level

signal

is

output,

and

when

it

is:

not

lit,

low

level

is

output.

DOLBY

output

When

“DOLBY”

is

displayed

on

the

LCD

panel,

high

level

signal

is

output.

When

itis

not

lit,

low

level

signal

is

output.

On

initialization

when

the

power

is

turned

on,

low

level

is

output.

@

Inthe

Tape

mode:

This

functions

as

the

ADV

on/off

output

pin.

When

“ADV”

is

displayed

on the

LCD

panel,

high

level

signal

is

output,

while

it

is

not

lit,

low

level

is

output.

On

initialization

when

the

power

is

turned

on

first,

it

is

at

low

level.

When

BAND

A

is

“0”

and

the

NR

selector

is

“O”

(SDK

oper-

ation

is

normal

only

when

in

this

status),

and

BAND

B

is

“1”,

this

functions

as

the

BAND

2

output.

BAND

2

be-

comes

the

band

switching

output

port

in

combination

with

BAND

1.

Output

BAND

1

BAND

2

ee

Ne

mS

KAC-2001

CIRCUIT

DESCRIPTION

1.

KEY

MATRIX

CONFIGURATION

1-1.

Key

Matrix

Layout

The

SSS

in

the

SSS

shows

the

no.

L

|

:

Momentary

switch

:

Alternate

switch

or

transistor

switch

Zi

:

Diode

matrix

(ieee

suaned

by

diode)

-

1-2.

Switch

Connection

Momentary

switch

Alternate

switch

Diode

matrix

or

open

Transistor

switch

Kn

Vop

Kn

KSm

KSm——

KSm

i

11

KRC-2001

CIRCUIT

DESCRIPTION

1-3.

Key

Matrix

Connection

:

Momentary

switch

:

Alternate

switch

or.transistor

switch

:

Diode

matrix

oo

>

wPD1708G-018-00

or

pPD1708G-218-03

KS,/K,

12

KRG-2001

CIRCUIT

DESCRIPTION

2.

KEY

MATRIX

DESCRIPTION

(1)

The

switch

for

setting

the

receiving

frequency

range

and

the

channel

spacing:

2-1.

Diode

Matrix

for

Initialization

BAND

A

The

diode

matrix

for

initialization

has

the

following

five

status.

All

status

is

read

out

only

when

the

power

is

sup-

(2)

Clock

signal

select

switch:

plied

to

the

Vpp

for

the

first

time

(Power-ON,

Reset)

and

CLKSEL

when

the

CE

goes

high

from

low

level

(CE

Reset),

in

another

periods,

the

diode

matrix

status

is

ignored.

(3)

Priority

select

switch

for

display:

PRIORITY

(4)

—

(5)

NR

select

switch:

NR

SEL

(6)

CLOCK/FREQUENCY

select

switch:

CLOCK/FRO

(7)

LW

select

switch:

BAND

B

Symbol

Function

Description

This

switch

is

used

for

setting

the

receiving

frequency

range

for

each

FM/MW/LW

band

channel

spacing.

Each

setting

status

is

as

follows:

BAND

A

BAND

A

Frequency

Range

Channel

Spacing

Manual

Step

:

|

1

|

87.9~107.9MH2

2oorkz

|

=

|

1

|

s30~te20KH

|

torte

|

o

|

87.

p

25kHe

|

522~1611

kHz

When

the

clock

function

is

provided,

this

switch

selects

the

priority

mode

for

display.

When

the

display

which

does

not

have

priority

is

recalled,

the

mode

having

priority

will

be

displayed

after

approx.

PRIORITY

5

seconds.

“1:

No

priority

; :

“0”:

Priority

is

provided.

,

g75~1080MHz

|

—

SOkHz

:

Select

switch

to

provide

the

clock

function

or

not.

CLKSEL

“1”:

Clock

is

not

provided

(For

back-up,

RAM

is

not

cleared)

;

“0”:

Clock

is

provided.

Select

switch

to

provide

the

NR

(noise

reduction)

function.

“0”:

NR

is

not

provided

(WIDE-ADV

and

BAND

2

output

pin)

“1:

NR

provided

Select

switch

to

provide

priority

to

the

clock

or

frequency

for

display

(Depending

on

PRIORITY)

CLOCK/FRQ

“O":

Frequency

“1:

Clock

Switch

to

access

the

preset

memory

(M1

to

M6)

sequentially

“0”:

M1

to

M6

keys

are

preset

independently

“1”:

Each

time

the

M1

key

is

pressed,

preset

memory

is

sent

sequentially

CM

Mey

13

KRG-2001

CIRCUIT

DESCRIPTION

2-2.

Mode

Select

Switches

Unlike

the

initializing

switches,

these

switches

can

be

changed

at

any

times.

(On

the

following

table,

“1”

shows

switched

ON,

“O”

shows

switched

OFF)

Function

Description

Set

the

unit

to

RADIO

mode

or

TAPE

mode.

“1°:

TAPE

mode

“O":

RADIO

mode

In

the

RADIO

mode:

This

is

the

Station

Detector

input

in

SEEK

or

SCAN

mode.

SD

This

should

be

set

to

OFF

within

approx.

50

ms

after

the

PLL

is

locked.

When

every

times

are

OFF

by

detecting

the

station

every

1

ms,

the

station

is

recognized

as

received

and

the

seeking

or

scanning

operation

stops.

In

the

RADIO

mode:

(Only

for

FM

reception)

Stereo

signal

input

switch.

When

this

switch

turns

OFF,

“ST”

is

displayed

on

the

LCD

panel.

However,

“ST”

goes

off

in

the

Auto

Tuning

mode

(AF.

MUTE

is

active)

even

if

this

switch

is

OFF.

STEREO

In

the

Tape

mode:

Tape

running

direction

indicator

input

switch.

When

this

switch

turns

ON,

the

“REV”

(<4)

is

displayed

on

the

LCD

panel.

When

it

tums

OFF,

the

“FOW"

(bP)

is

displayed,

This

switch

functions

only

when

the

CE

pinis

high

and

the

MODE

switch

is

“ON”

(Tape

mode).

FOW/REV

2-3.

Momentary

Switches

Symbol

Function

Description

These

keys

are

used

for

manual

tuning

and

time

adjustment.

@

Frequency

display

Each

time

the

key

is

pressed,

the

displayed

frequency

is

advanced

up

(by

MU

key)

or

down

(by

MD

key)

by

1

step

(channel

spacing

set).

When

it

is

pressed

for

a

half

second

or

more,

the

frequency

is

advanced

rapidly

(continuously)

until

itis

released.

,

@

Clock

(time)

display

While

pressing

the

ME

key,

press

the

MD

key

to

adjust

the

time,

and

press

the

MU

key

to

adjust

minutes.

In

the

Radio

mode:

These

keys

are

used

to

write

or

recall

the

preset

memory.

FM,

MW

and

LW

bands

can

be

stored

independently

into

each

key

inmemory.

(1)

When

writing

With

the

frequency

display,

within

five

seconds

after

pressing

the

ME

key,

press

one

key

(M1

to

M6),

to

store

the

fre-

quency

currently

received

into'memory.

(2)

When

recalling

When

one

key

(M1

to

M6)

is

pressed,

the

memory

content

(frequency)

corresponding

to

the

key

pressed

is

recalled,

When

the

radio

is

turned

on

after

the

VDD

is

first

turned

on,

the

lowest

frequency

on

the

FM

band

is

recalled.

When

shipped,

the

following

frequencies

are

preset

into

M1

to

M6

key

for

adjustment

at

the

factory.

87.9~107.9

MHz

87.50~108.00

MHz

530~1620

kHz

522~1611

kHz

14

|

y.

Y

KRC-2001

CIRCUIT

DESCRIPTION

Function

Description

Symbol

These

keys

are

used

to

write

and

recall

the

preset

memory.

Each

FM,

MW

and

LW

frequency

can

be

stored

into

one

key

in

memory

independently.

However,

the

number

of

available

bands

differ

with

the

area

designated

by

the

initializing

diode

matrix,

as

follows:

For

the

area

only

2

bands

are

available:

6

stations

*

2

=

12

stations

For

the

area

3

bands

are

available:

6

stations

X

3

=

18

stations

Corresponding

to

the

preset

key

pressed,

the

‘CH’

indicator

and‘*

”

(channel

number)

are

displayed

on

the

LCD

panel.

Mi

5

M6

These

keys

are

used

for

automatic

tuning.

During

auto

tuning

operation,

when

the

SD

switch

is

turned

OFF,

the

frequency

displayed

at

the

time

is

kept

on

hold.

In

auto

tuning

mode,

the

auto

tuning

operation

is

continued

even

when

the

LOUDNESS,

ME,

NR,

METAL-DX/LOC,

or

MONO-DOLBY

key

is

pressed.

When

one

of

the

other

keys

is

pressed,

the

auto

tuning

operation

is

stopped,

and

the

unit

enters

the

operation

of

the

key

pressed.

When

the

SEEK

key

is

pressed

again,

the

frequency

before

the

SEEK

operation

is

resumed.

This

key

is

used

to

select

the

function

between

DX/LOC

—

MTL.

@

Inthe

Radio

mode:

Each

time

the

key

is

pressed,

the

LOC

output

and

the

“LOC”

display

on

the

LCD

panel

are

inverted.

When

the

“LOC”’

display

on

the

LCD

panel,

high

level

signal

is

output

from

the

LOC

Out

pin,

and

when

it

is

not

lit,

low

level

is

output.

@

Inthe

Tape

mode:

.

Each

time

the

key

is

pressed,

the

LOC

output

and

the

“MTL”

display

are

inverted.

When

the

“MTL”

is

displayed

on

the

LCD

panel,

low

level

signal

is

output

from

the

LCD

Out

pin,

and

when

it

is

not

lit,

high

level

is

output.

By

initialization

when

the

power

is

turned

on,

high

leve!

signal

is

output.

SEEK

UP/DOWN

DX/LOC

—MTL

This

key

is

used

for

writing

the

preset

memory.

It

is

also

used

for

adjusting

the

time

on

clock

display.

@

Frequency

display:

Used

when

writing

a

new

frequency

into

the

preset

memory.

When

this

key

is

pressed,

the

‘‘ME”

is

displayed

on

the

LCD

panel,

and

lit

for

five

seconds

after

the

key

is

released.

While

the

“ME”

is

lit,

pressing

one

key

(M1

to

M6)

stores

the

displayed

frequency

into

memory

corresponding

to

the

key

pressed.

To

cancel

the

preset

memory,

while

the

“ME”

is

lit,

press

any

key

other

than

ME,

NE,

METAL-DX/LOC,

MONO-DOLBY,

or

LOUDNESS.

®

Clock

display:

The

“hour”

and

‘“‘minutes”

can

be

adjusted

by

pressing

the

MD

or

MU

key

while

pressing

the

ME

key.

After

pressing

the

ME

key,

each

time

the

MD

key

is

pressed,

the

“‘hour’’

is

advanced

one

by

one.

Pressing

it

for

a

half

second

or

more

advances

the

time

by

4

hours/sec

continuously

until

the

MD

key

is

released.

This

operation

does

not

affect

the

“minute”

or

“second”

digits

(they

are

not

displayed

during

this

operation).

After

pressing

the

ME

key,

each

time

the

MU

key

is

pressed,

the

‘“minute”’

is

advanced

one

by

one.

Press

it

for

a

half

second

or

more

advances

the

minute

in

8

minutes/sec

speeds

continuously,

unti!

the

MU

key

is

released.

The

“second”

is

not

displayed,

however,

it

is

reset

to

zero

every

time

the

“minute”

is

set.

The

‘‘minute”

adjusting

does

not

affect

the

“hour”.

(“Hour’

is

not

changed

even

when

the

“‘minute’’

exceeds

60.)

(During

clock

display,

pressing

the

ME

key

alone

changes

the

display

to

frequency

and

“ME”

is

displayed.

In

this

condition,

pressing

one

of

the

preset

keys

(M1

to

M6)

stores

the

frequency

into

the

memory

corresponding

to

the

key

pressed.)

This

key

is

used

to

select

the

band.

When

Band

A

is

“O”

or

“1”

and

Band

B

is

“0”

(LW:

Not

available)

. . .

Each

time

this

key

is

pressed,

the

band

is

changed

in

the

order

of

FM

—

MW

—

FM...

Used

for

Loudness

select

key.

Each

time

this

key

is

pressed,

the

loudness

output

and

the

“LOUD”

display

on

the

LCD

panel

are

inverted.

When

the

“LOUD”

is

displayed

on

the

LCD

panel,

low

level

signal

is

output

from

the

Loudness

and

when

it

is

not

lit,

high

level

is

output.

By

initialization

when

the

power

is

first

turned

on

{rising

time

of

VDD),

“LOUD”

is

displayed

and

low

level

is

output.

LOUDNESS

15

KRE-2001

|

16

CIRCUIT

DESCRIPTION

Function

Description

Display

select

key.

Available

only

when

in

the-radio

mode.

When

this

key

is

pressed,

the

display

is

changed

from

the

clock

display

to

frequency

or

vice

versa.

However,

five

seconds

after

the

key

is

pressed,

the

display

is

restored

to

the

priority

mode

(depending

on

the

diode

matrix

PRIORITY).

When

the

clock

is

not

provided

(CLKSEL=0),

this

key

has

no

effect.

However,

the

clock

display

is

resumed

by

the

PRIORITY

switch

when

the

display

priority

is

provided.

a)

ON:

Priority

is

provided

b)

OFF:

No

priority

(1)

NR

key

(RADIO/TAPE

common

key)

(2)

WIDE-ADV

key

(Independent

RADIO/TAPE

key)

(1)

NR

key:

BAND

A:

“0”,

1”

NR

SEL:

1"

With

the

above

status,

this

key

is

used

as

the

NR

select

key.

Each

time

the

key

is

pressed,

the

BAND2/NR

output

and

“‘NR”

display

on

the

LCD

panel

are

inverted.

When

“NR”

is

displayed

on

the

LCD

panel,

the

BAND2/NR

outputs

the

high

level,

and

when

the

display

is

not

lit,

low

level

is

output.

(By

initialization

when

the

power

is

turned

on,

it

outputs

low

level.)

(2)

WIDE-ADV

key:

BAND

A:

“0”,

"1°"

NR

SEL:

“1”

With

the

above

status,

this

key

is

used

as

the

WIDE-ADV

select

key.

In

the

Radio

mode:

Used

as

the

WIDE

select

key.

7

Each

time

the

key

is

pressed,

the

BAND2/ADV

output

and

the

“WIDE”

display

on

the

LCD

panel

are

inverted.

When

the

“WIDE”

is

displayed

on

the

LCD

panel,

the

BAND2/ADV

outputs

the

high

level,

and

when

the

display

is

not

lit,

low

level

is

Output.

On

Tape

mode:

Used

as

the

ADV

select

key.

Each

time

the

key

is

pressed,

the

BAND2/NR

output

and

the

“ADV”

display

on

the

LCD

panel

are

inverted.

When

the

“ADV”

is

displayed

on

the

LCD

panel,

the

BAND2/NR

outputs

the

high

level.

When

the

display

is

not

lit,

the

low

level

is

output.

{By

initialization

when

the

power

is

turned

on,

low

level

is

output.)

Note:

When

the

following

status

is

selected

in

the

diode

matrix,

the

NR

key

and

the

WIDE-ADV

key

are

not

effective.

NR

SEL:

“0”

BAND

A:

“0”

BAND

B:

“1”

This

key

is

used

for

setting

the

received

frequency

range

for

FM/MW/LW

band

and

the

channel

spacing.

1.

By

initialization

when

the

power

is

turned

on,

the

receiving

frequency

and

channel

spacing

are

registered

by

the

diode

of

BAND

A.

Then,

when

the

CE

goes-*L"’—"‘H“or

vice

versa,

they

follow

the

diode

of

BAND

A.

2.

When

the

CE

pinis

inverted

to

high

from

low

while

pressing

the

M5

key

and

the

BAND

key

together,

the

band

setting

of

BAND

A

is

changed

from

“1”

to

“O”

or

from

“0”

to

“"1"".

Then,

when

the

CE

is

inverted

toc*L"’—>“H’4or

vice

versa,

the

changed

area

setting

is

maintained.

3.

When

the

CE

is

inverted

from

low

to

high

while

pressing

the

M5

key

and

BAND

key

together,

the

band

setting

follows

the

diode

of

BAND

A.

Then,

when

the

CE

pinis

inverted

fromL’’—“H“or

vice

versa,

it

follows

the

diode

of

BAND

A,

too.

4.

To

change

the

setting

by

the

M5

key

and

the

BAND

key,

repeat

procedure

2

and

3.

Note:

On

initialization

when

the

power

is

turned

on,

the

M5

key

and

the

BAND

key

are

ignored

even

when

they

are

pressed,

and

the

setting

is

followed

to

the

diode.

M5

BAND

Set

the

controls

and

switches

as

follows.

BALANCE

:center

position

FADER

:center

position

BASS

scenter

position

TREBLE

:center

position

ITEM

LOUD

T+

ADY

METAL

DOLBY

NR

:

INPUT

SETTINGS

OFF

:

OFF

ADJUSTMENT

LOCAL

AUTO

OUTPUT

SETTINGS

OFF

:

OFF

TUNER

(RECEIVER)

SETTINGS

ALIGNMENT

POINTS

ALIGN

FOR

SECTION

(A)

Connect

the

98.

1MHz

DC

voltmeter

FM

0

dev

between

pins

98.

1MHz

60dBCANT

input)

of

TP1

(A)

Connect

the

98.

1MHz

frequency

FM

0

dev

counter

pins

98.

1MHz

60dBCANT

input)

of

TP2

(C)

98,

1MHz

lkHz,#67.5kHz

dev

(B)

Selector:L

or

R

60dB(ANT

input)

CA)

98.

1MHz

FH

0

dev

98,

1MHz

20dBCANT

input)

(A)

98.

1MHz

FH

1kHz,275kHz

dev

98.

1kHz

BOdBCANT

input)

ANT

OPEN

FM

(No_signal)

98.

1kHz

DISCRIMINATOR

19,

00kHz

Adjust

it

so

that

the

FH

crosstalk

from

L

to

R

and

98.

1MHz

R

to

L

become

minimum,

SEPARATION

STOP

LEVEL

{__

SOFT

MUTE

Set

the

volume

to

0

dBs,

SOFT

MUTE

|

VRi

990kHz

AM

vR1

~

25dBs

-_—_i__

@)

STOP

LEVEL

400Hz,30%

mod

990kHz

(X14)

STOP

38dBCANT

input)

SSETTE

DECK

SECTION

zo

Adjust

the

azimuth

for

each

|

L-CH/R-CH

or

FOW/REV

becomes

maximum,

Head

Azimuth

Screw

TAPE

PLAY

AZIMUTH

MTT-

114

(10kHz)

17

REGLAGE

Regler

les

controles

et

les

boutons

comme

suit.

BALANCE

:position

centre

LOUD

:OFF

LOCAL

:

OFF

FADER

:position

centre

T-

ADV

:0FF

AUTO

:OFF

BASS

:position

centre

METAL

:OFF

TREBLE

:position

centre

DOLBY

NR

:OFF

REGLAGE

DE

REGLAGE

DE

REGLAGE

DU

TUNER

POINTS

DE

ITEM

L’

ENTREE

LA

SORTIE

CAMPLI-TUNER)

|

L’

ALIGNEMENT

ALIGNER

POUR

CTION

MF

Raccorder

le

CA)

volimetre

CC

DISCRIMINATEUR

98,

1MHz

entre

les

deux

Fi

0

dev

broches

de

98,

1MHz

60dBCEntree

ANT)

TPL

(AD

Raccorder

le

98,

MHz

compteur

de

0

dev

frequence

aux

19,

00kHz

60dBCEntree

ANT)

|

broches

de

TP2

(C)

98,

MHz

Le

regler

de

maniere

SEPARATION

1kHz.267,5kHz

dev

(B)

FH

a

ce

que

la

diaphonie

Selecteur:L

ou

R

98,

1MHz

deLaR

et

de

Ra

L

60dBCEntree

ANT)

devienne

minimum.

CA)

NIVEAU

98,

\MHz

FM

D’

ARRET

0

dev

98,

LMHz

ARRET

20dB(Entree

ANT)

(A)

98,

1MHz

FH

SILENCIEUX

DOUX

LkHz.275kHz

dev

98,

MHz

Regler

le

volume

a

0

dBs.

(1)

60dBCEntree

ANT)

SILENCIEUX

DOUX

Quvrir

1’

antenne

FM

(pas

de

signal)

98,

1MHz

—

25dBs.

(D)

NIVEAU

990kHz

AX

D’

ARRET

400Hz.

30%

mod

990kHz

38dBCEntree

ANT)

CTION

DU

MAGNETPHON

—T

Ajuster

1’

azimut

pour

que

AZIMUTH

MTT-

114

Lecture

bande

Vis

d’

azimut

de

chaque

L-CH/R-CH

ou

(10kHz)

tete

FOW/REY

devienne

maximum.

18

/

KRG-2001

ABGLECH

ADJUSTMENT/REGLAGE/ABGLECH

Die

Regler

und

Knopfe

wire

folgt

einstellen.

BALANCE

:Mittelage

LOUD

:

OFF

LOCAL

:

OFF

FADER

—-:Mittelage

T+

ADV

:OFF

AUTO

SOFE

BASS

:Mittelage

METAL

:OFF

TREBLE

:Mittelage

DOLBY

NR

:OFF

EINGANGS-

AUSGANGS-

TUNER

CRECEIVER)-

ABGLEICH

GEGENSTAND

EI

NSTELLUNG

EINSTELLUNG

PUNKTE

ABGLEICHEN

FuR

WOABTEILUNG

w

;

Den

Gieichstron-

(A)

Voltmeter

98,

1MHz

zwischen

den

)

(c)

DISKRIMINATOR

0

Hub

beiden

Stif-

.

60dBCANT-

Eingang)

ten

von

TPL

anschliegen.

(D)

(A)

Den

Frequenzzahler

98,

1MHz

an

die

Stifte

FM

0

Hub

von

TP2

98,

IMHz

19,

O0kHz

60dBCANT-

Eingang)

anschliegen,

(Cc)

98,

1MHz

So

einstellen,

dag

das

STEREO

KANAL

1kHz.#67,5kHz

Hub

(B)

:

FM

wbersprechen

von

TRENNUNG

Wahler:L

oder

R

98,

1MHz

L

auf

R

und

60dBCANT-

Bingang)

von

R

auf

L

minimal

wird.

aii

(8)

a

|

98,

1MHz

FM

a

:

HALT

PEGEL

0

Hub

98,

LMHz

HALT

vanes

Oscilloscope

E

20dBCANT-

Eingang)

Wechselspan-

Oscilloscope

°

r

(C)

nungsmesser

2

ae

z

Weiche

Dampfung

98,

1MHz

FM

Die

Lautstarek

i

qd)

1kHz.275kHz

Hub

98,

1MHz

auf

0

dBs

einstellen.

|

60dBCANT-

Bi

ngang)

Weiche

Dampfung

|

Die

Antenne

offnen

FH

Speaker

|

(2)

(Kein

Signal).

98,

IMHz

;

to

ANT

-ABTEILUNG

(D)

990kHz

MY

HALT

PEGEL

400Hz.

80%

mod

990kHz

38dBCANT-

Bingang)

SSETTEN-DECK-—-ABTEIL

So

einstellen,

dag

das

Azimuth

fur

jeweils

AZIMUTH

MTT-

114

(1

0kHz)

Bandwiedergabe

Kopfazimutschraube

|

~

L-CH/R-CH

oder

FOW/REV

maximal

wird.

(f)

VR1

SOFT

MUTE

AM

STOP

LEVEL

DISCRIMINATOR

(c)

VR4

SEPARATION

e

a

(b)

VR5

vco

(h)

Head

Azimuth

Screw

19

20

&

0.

bE

oF

z

a.

77)

&

6

wee

a

«

ve

9°

zs

Ga

uw

rr cc

a

of

4

el

a)

ao}

of

=|

[fx]

3]

«= e]

)&

2}

§|

SLUS

a)

2

3|

3

~)

WHT

5

CONTROL

(X11-2230-10

B/5)

KRC-2001

KRG-2001

PC

BOARD

DIN

cE

GND

LR

SP

Component

side

view

SYNTHESIZER

(X14-1870-10)

3!

3

JT

BRN

RED

1

oO

ORG

76

_

Zz

oO

ac

Le

XII

C/5

CONTROL

(X11-2230-10

C/5)

in

C23

°

Ql

B38-0066-05

LCD

ASSY

CONTROL

(X11-2230-10

A/5)

Component

side

view

ANT

PLAY/BACK

HEAD

CONTROL

(X11-2230-10

D/5)

Refer

to

the

schematic

diagram

for

the

values

of

resistors

and

capacitors.

The

PC

board

drawing

is

viewing

from

the

side

easy

to

check.

Kenwood KRC-2001 User manual

Popular Stereo Receiver manuals by other brands