Pioneer KEH-9300SDK WG User manual

© PIONEER
Service
CIRCUIT & MECHANISM
ita SSS Cee!
ORDER NO.
The
photo
shows
the
model
KEH-9300
SDK/WG.
CRT-
398-
0
CASSETTE
CAR
STEREO
WITH
FM/MW/LW
ELECTRIC
TUNER
KEH-SS300SDK..
KERH-S300
EW
CASSETTE
CAR
STEREO
WITH
FM/AM
ELECTRIC
TUNER
KEH-SOOO
..
©
For
the
repair
and
adjustments,
please
refer
to
the
service
manual
(CRT-387).
¢
‘Dolby’
and
the
double-D
symbol
are
trademarks
of
Dolby
Laboratories
Licensing
Corporation.
¢
Noise
Reduction
System
manufactured
under
license
from
Dolby
Laboratories
Licensing
Corporation.
DESCRIPTIONS
CONTENTS
1, SPECIFICATIONS. ....... cece cece eee cece ee ee 1
2. OPERATION ...... 0. .b eee eee eens eeeee an 1
3. CONNECTION. 0.0.0... . cece cece teen eee ene es 7
4. CIRCUIT DESCRIPTION. ............0000c eee 9
PIONEER
ELECTRONIC
CORPORATION
4-1.
Meguro
1-Chome,
Meguro-ku,
Tokyo
153,
Japan
PIONEER
ELECTRONICS
(USA]
INC.
P.O.
Box
1760,
Long
Beach,
California
SOBO1
U.S.A.
PIONEER
ELECTRONIC
[EUROPE]
N.V.
Keetbergiaan
1,
2740
Beveren,
Beigiurn
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-194
Boundary
Road,
Braeside,
Victoria
3195,
Australia
EK © JAN. 1984 Printed ij Jagpan

“KEH-9300SDK_
1. SPECIFICATIONS
General (KEH-9300SDK)
Power
source
..........
DC14.4V
(10.8
~
15.6V
allowable)
Grounding
system
..............-00eceee
Negative
type
Max.
current
consumption.............000cc
cece
eee
5A
Dimensions
(chassis)..........
180(W)x50(H)x
160(D)
mm
(front
face).........
184(W)x56(H)x16(D)
mm
WIG
hts,
Saisie
ai
iie
tates,
ost
clits
rte.
s
oretebenttatow
cheats
2.1kg
General
(K
EH-9300,
9000)
Power
source..........
DC
14.4V
(10.8
~
15.6V
allowable)
Grounding
system
..............-0eeeeee
Negative
type
Max.
current
consumption.
............cccceeeeeees
5A
Dimensions
(chassis)..........
180(W)
x
50(H)
x
150(D)
mm
(frontface).........
184(W)x56(H)x
16(D)
mm
Weight
os
3.0
eect
oad
as
ate
Seenehe
ad
tise
inten
eove'
howe
brett
tv's
hee
2kg
Amplifier
Maximum
power
output
(2speaker)
.....
0...
ce
eee
cece
ence
eee
20W
+
20W
(4:Speaker)
rctace
vocchate
sn
wo
hreica
ode
oe
6.5W
+
6.5W
Continuous
power
output
(2speaker)
.............
13W
+
13W
(1%
dist.
at
1
kHz)
(4speaker)............
4.5W
+
4.5W
(1%
dist.
at
1
kHz)
Load
impedance
(2speaker)...
00...
eee
ee
ee ee
4Q
(4~
8Q
allowable)
(4speaker)..
0...
.
eee
eee
4Q
(2
~
82
allowable)
Graphic
equalizer
(60,
250,
1k,
3.5k,
10kHz)................0
00
+10
dB
Tape
player
Tape........
ec
eae
Compact
cassette
tape
(C-30
~
C-90)
Tape
speed
....
0...
cece
cece
eee
eee
aes
4.76
cm/sec.
(+
0.14
cm/sec.,
—0.05
cm/sec.)
Fast
forward/rewind
time........
Approx.
100
sec.
for
C-60
Wow
&
flutter...
0.0.0...
0c
c
ee
eee
eae
0.13%
(WRMS)
2. OPERATION
¢ KEH-9300SDK
Se Doe
2 GRAPHIC EQUALIZER %
6a... 250. 7...
° SEEK
Frequency
response........
Metal:
50
~
16,000
Hz
(+3
dB)
Normal:
50
~
12,000
Hz
(+3
dB)
Stereo
separation
...
0...
ccc
ec
cee
eevee
45
dB
Signal-to-noise
ratio
...
Dolby
NRIN:
60
dB
(IEC-A
network)
Dolby
NR
OUT:
52
dB
(IEC-A
network)
FM tuner (KEH-9300SDK)
Frequency
range..........
ccc.
cece
uae
87.5~
108
MHz
Usable
sensitivity
..........
13.2
dBf
(1.8
4V/1502,
mono)
50
dB
quieting
sensitivity
......
18.2
dBf
(3
nV/1502,
mono)
Signal-to-noise
ratio
.............
..
70
dB
(IEC-A
network)
Distortion................
0.3%
(at
65
dBf,
1
kHz,
stereo)
Frequency
response..............
50
~
12,000
Hz
(+3
dB)
Stereo
separation
...............
40
dB
(at
65dBf,
1
kHz)
FM
tuner
(KEH-9300,
9000)
Frequency
range.......-
cece
cee eee
ee
87.5
~
108
MHz
Usable
sensitivity.............
12
dBf
(1.1
n4V/752,
mono)
50
dB
quieting
sensitivity.......
17
dBf
(1.9
n.V/75Q,
mono)
Signal-to-noise
ratio
.............,
70
dB
(IEC-A
network)
Distortion................
0.3%
(at
65
dBf,
1
kHz,
stereo)
Frequency
response..............
50
~
12,000
Hz
(+3
dB)
Stereo
separation
...............
40
dB
(at
65
cBf,
1
kHz)
MW
tuner
(AM
tuner)
Frequency
range............0cc
ceca
eee
531 ~
1,602
kHz
Usable
sensitivity.............
18
nV
(25
dB)
(S/N:
20
dB)
S@lCUVIRY
s
5
ces
oad
aes
Seeded
butels
Dee:
30
d8
(+9
kHz)
LW
tuner
(KEH-9300SDK,
9300)
Frequency
range
.......
0...
cee
eee
eeu
153
4-281
kHz
Usable
sensitivity............,
30
nV
(30
dB)
(S/N:
20dB)
Sel
CtIVIRY
s
ccrecen
eats
58
3
a
Ao
eels
30
dB
(9
kHz)
Note:
Specifications
and
the
design
are
subject
to
possible
modification
without
notice
due
to
improvements.
AUT O-REVERSE
2-WaY mbH" POWER SYSTEN
mL *
RADIO «4 BAL L=7NNio] MANU’ syarHEsIzER,

H-9300SDK
To Listen to a Tape
1.
Insert
the
cassette
tape
into
the
Cassette
Insertion
Slot
@
until
it
is
locked
in
position
with
the
exposed
piece
of
tape
on
the
right.
(The
unit
will
automatically
switch
to
the
tape
mode
when
a
cassette
is
inserted
while
the
radio
is
on.)
(Fig.
1)
2.
Adjust
Volume
@,
Balance
@,
and
Fader
@
Controls.
Pull
out
the
Balance
Control
Knob
@
and
rotate
to
adjust
bal-
ance.
3.
Depress
the
Direction
Change
Button
@
to
switch
over
from
the
side
of
the
tape
you
are
listening
to
now
to
the
other
side
during
play.
4.
To
fast
forward
the
tape,
depress
the
Fast
Forward/Rewind
Button
@
pointing
in
the
same
direction
as
the
Direction
In-
dicator
until
it
locks
into
position.
To
rewind
the
tape,
de-
press
the
Fast
Forward/Rewind
Button
pointing
in
the
op-
posite
direction
to
the
Direction
Indicator
until
it
locks
into
position.
To
release
the
fast
forward
or
rewind
mode,
simply
depress
the
other
button
lightly.
(Fig.
2)
To
change
from
fast
forward
to
rewind
or
vice
versa,
de-
press
the
other
button
directly
until
it
locks
and
this
will
change
the
traveling
direction
of
the
tape.
When
the
tape
has
been
fully
wound
up
in
the
fast
forward
mode,
the
fast
forward
mode
is
released
and
play
begins
automatically
from
the
first
program
on
the
other
side
of
the
tape.
When
the.
tapé
has
been
fully
wound
up
in
the
rewind
mode,
the
re-
wind
mode
is
released
and
play
begins
automatically
from
the
first
program
on
the
side
you
have
been
listening
to.
5.
To
stop
tape
play
or
replace
the
cassette,
fully
depress
both
Fast
Forward/
Rewind
Buttons
@
at
the
same
time.
(Fig.
3)
Note:
Do
not
try
to
eject
the
cassette
immediately
after
insertion,
as
it
will
cause
malfunction.
Wait
a
few
seconds.
Exposed tape on right.
Fig. 1
[|
Direction
Indicator
lightl :
Depress
button
lightly
Fig.
2
AS]
Fig. 3
Fader Control @
Adjusts
front-to-rear
balance
of
four
speaker
system.
(Fig.
4)
Equalizer Control Levers @
By
sliding
these
levers
up
and
down,
the
desired
sound
can
be
created
to
match
the
music.
(Fig.
5)
Musical
instruments
and
vocals
each
possess
their
respective
individual
frequency
ranges.
The
graphic
equalizer
divides
these
music
sources
into
several
frequency
bands
and
since
the
level
of
each
of
these
frequency
bands
can
be
increased
or
de-
creased,
fine
adjustments
can
be
made
which
cannot
be
per-
'
formed
using
ordinary
tone
controls.
(Fig.
6)
Dolby NR Switch ©
When
listening
to
a
tape
recorded
with
Dolby
NR,
press
this
switch.
The
Dolby
NR
Indicator
will
light.
(Fig.
7)
Tape Select Button @
Set
this
button
to
the
position
that
corresponds
to
the
type
of
tape
you
are
using.
If
the
button
is
pressed,
the
Metal
Indicator
will
illuminate.
(Fig.
8)
Volume level of the front
speakers gradually increases.
©
Volume level of the rear Fig. 4
speakers gradually increases. Ig.
The respective frequency range
t will be boosted.
3 The respective frequency range
will
be
attenuated.
Fig.
5
60
250
1k
3.5k
104
(dB)
H
H
H
+104
o
>
a
a
|
—10
b
10
100
Tk
-
10h
(Hz)
Frequency
———
=
Fig.
6
OFF
ON
7
Ene
ie
ae
ST
Tape recorded Tape recorded
For normal tape For ry; and
without
Dolby
NR.
with
Dolby
NR.
petal
chrone ta pes
Fig. 7 Fig. 8

¢ KEH-9300
¢ KEH-9000
00
AUT O-RE VERSE
DO Gaisy aa?
AUT O-REVERSE
2- Way HIGH? POWER SYSTEM
DOfocer sa]
SEEK Pu
MANU synTHESzER
P- wav iGn-PoweR |sYSTEM
14 =, cle] aij a) ¢
O'RECTION.
ey,
MONO METAL
OG

To
Listen
to
the
Radio
(KEH-9300SDK,
9300)
1.
When
the
Radio
Power
Switch
@
is
pushed
on,
the
radio
frequency
will
appear
on
the
Digital
Display
@.
(Fig.
9)
2.
Press
Band
Select
Button
®
to
select
the
desired
band
and
Digital
Display
@
will
illuminate
to
indicate
the
band.
3. Tune in desired station.
There
are
several
methods
of
finding
the
radio
station
you
wish to listen to.
Manual Tuning
Press
Manual/Seek
Select
Button
@
to
select
Manual
Tuning.
(Digital
Display
@
indicates
nothing
during
Manual
Tuning
but
SEEK
illuminates
during
Seek
Tuning.)
Press
the
right
or
left
side
of
Tuning
Button
@
to
set
the
desired
station.
(Fig.
10)
FM Band
Each
time
the
=-Tuning
Button
@is
pressed,
the
frequency
in-
creases
25kHz.
If
you
continue
to
press
the
button
without
re-
leasing
it,
the
frequency
will
continuously
increase
in
25kHz
in-
crements.
(Fig.
11)
Each
time
the
=<=Tuning
Button
®
is
pressed,
the
frequency
decreases
25kHz.
If
you
continue
to
press
the
button
without
releasing
it,
the
frequency
will
continuously
decrease
in
25kHz
increments.
(Fig.
12}
When
a
strong
FM
Stereo
station
is
received,
the
FM
Stereo
In-
dicator
will
illuminate.
Local Indicator
Seek Indicator
FN Stereo indicator
Memory Indicator
Preset Button
indicator
Indicates the frequency tuned in.
Fig. 9
Tuning button
Frequency
decreases
Frequency
increases
Fig. 10
This portion of the frequency indicator
goes from 25 to 50 to 75.
[
|
FM Om m 25
Fig. 11
This portion of the frequency indicator
goes
from
75
to
50
to
25,
Fig.
12
KEH-S300SDK
MW
Band
;
Each
time
the
Tuning
Button
@
is
pressed,
the
frequency
in-
creases
9kHz.
If
you
continue
to
press
the
button
without
re-
leasing
it,
the
frequency
will
continuously
increase
in
9kHz
in-
crements.
Each
time
the
-<Tuning
Button
@
is
pressed,
the
frequency
decreases
9kHz.
If
you
continue
to
press
the
button
without
re-
leasing
it,
the
frequency
will
continuously
decrease
in
9kHz
in-
crements.
LW Band
Each
time
the
Tuning
Button
@
is
pressed,
the
frequency
in-
creases
1kHz.
If
you
continue
to
press
the
button
without
re-
leasing
it,
the
frequency
will
continuously
increase
in
1kHz
in-
crements.
Each
time
the
-<<Tuning
Button
@
is
pressed,
the
frequency
decreases
1kHz.
If
you
continue
to
press
the
button
without
re-
leasing
it,
the
frequency
will
continuously
decrease
in
1kHz
in-
crements.
Seek Tuning
Press
Manual/
Seek
Button
@®
to
select
Seek
Tuning.
(At
this
time,
SEEK
in
the
Digital
Display
@
illuminates).
If
the
=
Tuning
Button
@
is
pressed,
the
next
higher,
clearly
receivable
station
will
be
tuned
automatically.
If
the
<<
Tuning
Button
@
is
pressed,
the
next
lower,
clearly
receivable
station
will
be
tuned
automatically.
Remote Control Seek Switch:
Remote
control
seek
tuning
is
possible
by
connecting
the
ac-
cessory
Remote
Control
Seek
Switch.
Press
the
UP
side
of
this
switch
and
the
next
higher
clealy
re-
ceivable
station
will
be
tuned
automatically.
Press
the
DOWN
side
and
the
next
lower,
clearly
receivable
station
will
be
tuned
automatically.
Press
the
Manuai/Seek
Select
Button
@
and
Manual
Turing
is
possible
at
the
same
time.
FM Band
Each
time
a
Tuning
Button
@
is
pressed,
the
frequency
inreas-
es
or
decreases
to
the
next
clearly
receivable
station
in
)kHz
increments.
For
fine
frequency
adjustments,
return
the
Manual/
Seek
Select
Button
to
the
Manual
position
and
adjust
the
frequency
using
the
Tuning
Button.
~
MW Band
Each
time
a
Tuning
Button
@
is
pressed,
the
frequeny
in-
creases
or
decreases
to
the
next
clearly
receivable
statin’
in
9kHz
increments.
LW Band
Each
time
a
Tuning
Button
@
is
pressed,
the
frequency
inceas-
es
or
decreases
to
the
next
clearly
receivable
station
in
9khz
ire-
crements.
Since
the
LW
Band
frequency
range
of
this
wit
is
153kHz
to
281kHz,
stations
selectable
using
Seek
Tunin:
are
155kHz,
164kHz,
173kHz,
182kHz...
272kHz
and
28kHz.
(During
manual
tuning,
the
frequency
is
changed
in
increnent
s
of
9kHz.
When
the
upper
end
of
the
frequency
band,
281Hz,
is
reached
during
manual
tuning,
the
tuning
automatall+y
Starts
from
the
lower
end,
155kHz,
again.)
To
tune
a=
station
on
another
frequency,
return
the
Manual/
Seek
Select
Button
@
to
the
Manual
position
and
une
the
station
in
1kHz
increments
using
the
Tuning
Button.

_KEH-9300SDK_
To
Listen
to
the
Radio
(KEH-9000)
1.
When
the
Radio
Power
Switch
@
is
pushed
on,
the
radio
frequency
will
appear
on
the
Digital
Display
@.
(Fig.
9)
2.
Press
Band
Select
Button
®
to
select
the
desired
band
and
Digital
Display
@
will
illuminate
to
indicate
the
band.
3. Tune in desired station.
There
are
several
méthods
of
finding
the
radio
station
you
wish to listen to.
Manual Tuning
Press
Manual/Seek
Select
Button
@
to
select
Manual
Tuning.
(Digital
Display
@
indicates
nothing
during
Manual
Tuning
but
SEEK
illuminates
during
Seek
Tuning.)
Press
the
right
or
left
side
of
Tuning
Button
@
to
set
the
desired
Station.
(Fig.
10)
FM Band
Each
time
the
==
Tuning
Button
@
is
pressed,
the
frequency
increases
25kHz.
If
you
continue
to
press
the
button
without
releasing
it,
the
frequency
will
continuously
increase
in
25kHz
increments.
(Fig.
11)
Each
time
the
-<<
Tuning
Button
@
is
pressed,
the
frequency
decreases
25kHz.
If
you
continue
to
press
the
button
without
releasing
it,
the
frequency
will
continuously
decrease
in
25kHz
increments.
(Fig.
12)
When
a
strong
FM
Stereo
station
is
received,
the
FM
Stereo
In-
dicator
will
illuminate.
Local Indicator
FM Stereo Indicator — Seek Indicator Memory Indicator
SEEK LOC ph
moet et eee
F2 Hae a 50“
Band
Indicator
Preset
Button
AM omy 75 Indicator
indicates the frequency tuned in. ;
Fig. 9
Tuning button
— =e
Frequency decreases Frequency increases Fig. 10
F 4 A ef - , \ cea 2s
a Be a Es
oa | (. tm? 75
This portion of the frequency indicator :
goes from 25 to 50 to 75. Fig. 11
= i f 50 |
This portion of the frequency indicator ;
goes from 75 to 50 to 25. Fig. 12
AM Band
Each
time
the
==
Tuning
Button
@
is
pressed,
the
frequency
increases
9kHz.
If
you
continue
to
press
the
button
without
releasing
it,
the
frequency
will
continuously
increase
in
9kHz
increments.
Each
time
the
=<
Tuning
Button
@
is
pressed,
the
frequency
decreases
9kHz.
If
you
continue
to
press
the
button
without
releasing
it,
the
frequency
will
continuously
decrease
in
9kHz
increments.
Seek Tuning
Press
Manual/Seek
Button
@
to
select
Seek
Tuning.
(At
this
time,
SEEK
in
the
Digital
Display
@
illuminates).
lf
the
==
Tuning
Button
@
is
pressed,
the
next
higher,
clearly
receivable
station
will
be
tuned
automatically.
If
the
<<
Tuning
Button
@
is
pressed,
the
next
lower,
clearly
receivable
station
wilt
be
tuned
automatically.
Remote Control Seek Switch:
Remote
control
seek
tuning
is
possible
by
connecting
the
ac-
cessory
Remote
Control
Seek
Switch.
Press
the
UP
side
of
this
switch
and
the
next
higher
clearly
re-
ceivable
station
will
be
tuned
automatically.
Press
the
DOWN
side
and
the
next
lower,
clearly
receivable
station
will
be
tuned
automatically.
Press
the
Manual/
Seek
Select
Button
@
and
Manual
Tuning
is
possible
at
the
same
time.
FM Band
Each
time
a
Tuning
Button
@
is
pressed,
the
frequency
increas-
es
or
decreases
to
the
next
clearly
receivable
station
in
50kHz
increments.
For
fine
frequency
adjustments,
return
the
Manual/
Seék
Select
Button
to
the
Manual
position
and
adjust
the
frequency
using
the
Tuning
Button.
AM Band
Each
time
a
Tuning
Button
®
is
pressed,
the
frequency
in-
creases
or
decreases
to
the
next
‘clearly
receivable
station
in
9kHz
increments.

Programming
Stations
(KEH-9300SDK,
9300)
You
can
preset
a
total
of
18
stations
(six
FM,
six
MW
and
six
LW)
using
the
six
feather-touch
Preset
Buttons.
One
button
can
store
one
station
each
for
FM,
MW
and
LW.
1.
Press
Band
Select
Button
®
and
Digital
Display
@
will
dis-
play
FM.
2.
Tune
to
the
desired
station
using
Manual
Tuning
or
Seek
Tuning.
3.
Press
the
Memory
Button
®
and
the
Memory
indicator
{ ME
)
will
illuminate
on
the
Digital
Display
@.
Press
one
of
the
Preset
Buttons
@
during
the
5-second
period
that
the
Memory
Indicator
is
illuminated.
At
this
time
the
number
of
the
preset
button
will
illuminate.
(Fig.
13)
4.
One
station
has
now
been
memorized
for
one
of
the
Preset
Buttons.
Repeat
steps
(2)
and
(3)
for
each
of
the
remaining
five
Preset
Buttons.
5.
Switch
Band
Select
Button
®
to
MW
and
then
LW,
and
re-
peat
steps
(2),
(3)
and
(4).
¢
Preset
Button
Indicator
PRE
is
not
illuminated
for
Manual
Tuning
or
Seek
Tuning.
(Number
display
is
unchanged.)
Local Station Seek Switch ©
At
night
when
FM/MW/LW
station
broadcast
signals
are
too
strong,
press
this
switch
when
unwanted
stations
often
come
in
when
using
Seek
Tuning.
(At
this
time,
LOC
in
the
Digital
Display
©
illuminates).
Tuner
sensitivity
is
not
affected
after
a
station
is
locked
on.
Press
the
switch
again
and
LOC
display
goes
out.
“Saat
Programming
Stations
(KEH-9000)
You
can
preset
a
total
of
18
stations
(six
FM1,
six
FM2
and
six
AM)
using
the
six
feather-touch
Press
Buttons.
One
button
can
store
one
station
each
for
FM1,
FM2
and
AM.
To
listen
to
an
FM
broadcast,
set
to
either
FM1
or
FM2.
Both
FM1
and
FM2
are
in
a
frequency
band
between
87.5
and
108MHz.
1,
Press
Band
Select
Button
®
and
Digital
Display
©
will
dis-
play
FM1.
2.
Tune
to
the
desired
station
using
Manual
Tuning
or
Seek
Tuning.
3.
Press
the
Memory
Button
®
and
the
Memory
Indicator
( ME
)
will
illuminate
on
the
Digital
Display
@.
Press
one
of
the
Preset
Buttons
@
during
the
5-second
period
that
the
Memory
Indicator
is
illuminated.
At
this
time
the
number
of
the
Preset
Button
will
illuminate.
(Fig.
13)
4.
One
station
has
now
been
memorized
for
one
of
the
Preset
Buttons.
Repeat
steps
(2)
and
(3)
for
each
of
the
remaining
five
Preset
Buttons.
5. Switch Band Select Button ® to FM2 and then AM, andre- -
peat steps(2), (3) and (4).
°
Preset
Button
Indicator
PRE
is
not
illuminated
for
Manual
Tuning
or
Seek
Tuning.
(Number
display
is
unchanged.)
Local Station Seek Switch ®
At
night
when
FM/AM
station
broadcast
signals
are
too
strong,
press
this
switch
when
unwanted
stations
often
come
in
when
using
Seek
Tuning.
(At
this
time,
LOC
in
the
Digital
Display
©
illuminates}.
Tuner
sensitivity
is
not
affected
after
a
station
is locked
on.
Press the switch again and LOC display goes out.
FM Auto/Mono Select Button @
This
button
will
only
function
with
an
FM
broadcast.
(Fig.
14)
FM
Auto:
In
most
cases,
this
button
should
be
left
in
this
position.
The
following
functions
are
automatically
activated
according
to
the
strength
of
the
incom-
ing FM signal:
e
Hi-Fi
stereo
quality
is
reproduced
with
a
strong
FM
stereo signal.
¢
Reception
is
automatically
controlled
(stereo
se-
paration
is
gradually
narrowed
and
high
frequency
is
slightly
attenuated)
to
reduce
background
noise
as the incoming signal weakens. Eventually, recep-
tion is switched to monaural.
For monaural reception, regardless of the strength
of
the
incoming
FM
signal
or
whether
it
is
stereo
or
monaural.
FM Mono:
Memory Indicator
Preset Button
—_ (. a 50 o indicator
Fg. 13
‘ig, fe
Auto
Mono
Fg.
14
FM Auto/Mono Select Button ©
This
button
will
only
function
with
an
FM
broadcast.
(Fig.
14)
FM
Auto:
In
most
cases,
this
button
should
be
left
in
this
position.
The
following
functions
are
automatrally
activated
according
to
the
strength
of
the
incom-
ing
FM
signal:
¢
Hi-Fi
stereo
quality
is
reproduced
with
a
stronc
FM
stereo signal.
©
Reception
is
automatically
controlled
(stereo
se-
paration
is
gradually
narrowed
and
high
frequincy
is
slightly
attenuated)
to
reduce
background
roise
as
the
incoming
signal
weakens.
Eventually,
reep—
tion is switched to monaural.
FM
Mono:
For
monaural
reception, regardless
of
the
streigth
of
the
incoming
FM
signal
or
whether
it
is
stereé)
ow
monaural.
Memory tndicator
_!
(.
50
-,
Preset
Button
Indiator
Fig
13
ip:
cama
Mono
.
Auto
Fig
14
KEH-S300SDK

To
Listen
to
Traffic
Information
(KEH-9300SDK)
1.
Push
Radio
Power
Switch
@.
Press
Band
Select
Button
®
and
Digital
Display
@
will
illuminate
to
indicate
FM.
(Fig.
15)
2.
Press
SDK
Switch
@
and
Digital
Display
will
illuminate.
Press
Tuning
Button
@
to
receive
traffic
information
broad-
casts
for
the
area
through
which
you
are
driving.
The
SK
in-
dicator
will
illuminate
when
a
signal
is
received.
3. The volume will become louder when a traffic information
announcement is received during a broadcast. Volume can-
not
be
lowered
by
turning
the
Volume
Control
@
to
the
left.
4.
As
the
traffic
information
broadcast
signal
weakens,
and
you
reach
an
area
where
the
signal
cannot
be
picked
up
at
all,
the
SK
Indicator
will
go
out,
indicating
that
traffic
infor-
mation
can
no longer
be monitored.
If
this
situation
persists
for
more
than
30
seconds,
an
alarm
will
beep
to alert
the
driver.
In
such
a
case,
either
receive
another
traffic
informa-
tion
broadcast
station,
turn
the
SDK
Switch
®
off,
or
switch
to
the
MW
or
LW
band
by
pushing
the
Band
Select
Button
®.
Note:
Keep
the
SDK
Switch
off
to
listen
to
FM
broadcast
that
is
nota
traffic information broadcast.
¢
Traffic.
information
can
be
monitored
in
tape
playback,
fast
forward
and
rewind
modes.
¢
To
listen
to
tape
only,
turn
SDK
Switch
or
Radio
Power
Switch
off.
Press
Band
Select
Button
to
select
an
MW
or
LW
station.
3. CONNECTION
3.1 KEH-9300SDK, 9000
¢ Four-speaker System
Speaker mode
selector switch
Antenna connector
To car antenna (___...||_]
Remote Control
Seek Switch
Connect orange Jead to the car's
battery terminal (DC 12V} which
will supply power regardless of
whether the ignition switch is on
or off. st)
Orange lead |!!
im i
Connect to the pilus (+) circuit
(clock illumination, small lamp
circuits, etc.) of the car's lighting
Fuse 0.5A
: Yellow lead
switch.
Connect to lead wire of relay for the power
auto antenna.
The antenna will automatically be raised and Blue lead
lowered by turning the radio switch on and
off (Max. 300mA 12V DC).
Green lead
Front/left side speaker
2% 8Q impedance
Black lead
Rear/left side speaker
2~ 8Q impedance
Band Indicator.
SK Indicator SDK Indicator
hu
SK §
FM )
Oo K
ME
<—m!
om!
Fig. 15
This unit can be operated with either a four-speaker
system or a two speaker high-power systern. Refer to
connection diagram to find out how tc connect the
speakers.
* Set the speaker mode selector switch to 4SP
when using the 4-speaker system. .
« Whenever replacing a fuse be sure to replace with
one of the same capacity.
Connect to metal body
LS or chassis.
Black lead wire
(Ground)
Fuse
4A
F
Red
lead
To
positive
trrinal
CP of battery (12V) -
Front/right side sspeaker
2% 82 impedinc €
Gray/black
lead
Rear/right side sp>eaker
2~ 82 impedance

KEH-S300SDK
e
-
1
i
*
Set
the
speaker
mode
selector
switch
to
2SP
Two
speaker
High
power
System
a
when
using
the
2-speaker
high-power
system.
©
Speakers
for
the
2-speaker
high
power
system
have
maximum
power
output
of
over
20W,
so
be
sure
the
impedance
is
4
to
82.
Be
aware
of
the
fact
that
using
a
speaker
other
than
the
one
specified
can
cause
the
speaker
to
be
damaged.
¢
Aspecial
BPTL
circuit
is
used
so
be
sure
that
you
do
not
connect
the
speaker
directly
to
ground
nor
join
the
left
and
right
speaker
(—-)
leads.
Speaker mode
selector switch
Antenna connector
To car antenna ees
Remote Control
Seek Switch
Connect orange lead to the
|
\
car’s
battery
terminal
(DC
|
Black
lead
wire
i
(Ground) Connect to metal body
LS or chassis.
12V) which will supply power Fuse 0.58 Orange lead
regardiess of whether the of | =
ignition switch is on or off.
Connect
to
lead
wire
of
relay
for
the
power
Blue
lead
auto
antenna.
The
antenna
will
automatically
be
raised
and
lowered
by
turning
the
radio
switch
on
and
off
(Max.
300mA
12V
DC).
Eiroutt (clock thurnaton Fuse 0.54
circui ; eS
small lamp circuits, etc.) of 8
the car's lighting switch.
Yellow lead |
Gray lead
Green lead
Left sid nf Green/black lead
eft side speaker
‘ Right side speaker
4~ BQ impedance
1 4~. 82 impedance
h Graylead
Green lead
To positive terminal ae Red lead
of battery (12V).
~ Tight
3.2 KEH-9300
This
unit
can
be
operated
with
either
a
four-pea
ker
e
Four-speaker
System
system
or
a
two
speaker
high-power
system.
fefer
to
connection
diagram
to
find
out
how
to
conmct
the
speakers.
¢
Set
the
speaker
mode
selector
switch
yo
4SP
Antenna connector Speaker mode when using the 4-speaker system. #
“Quick Release Mounting Bracket’. Ths
ates
selector
switch
¢
Whenever
replacing
a
fuse
be
sure
to
replee
with
Tocar
antenna
(|__|
8
:
dusisiese
one
of
the
same
capacity.
urple
lea
chet
.
This
wire
is
exclusively
for
the
memory
,ack-
up
dry
battery,
which
is
required
for
the
f=
=
Remote
Control
F
Cy
|
Seek
Switch
0
Rll
wire’s
capacity
is
limited
to
+4.5V~
43V,
(=
‘ay
Note:
Do
not
cut
or
use
for
any
other
purpose.
——!
|
a
ake
Connect
to
metal
body
,
or
Chassis.
Black
lead
wire
Connect
orange
lead
to
the
car's
]
J
Hround)
battery
terminal
(DC
12V)
which
Fuse
0.54
Orange
lead
UUU
will
supply
power
regardless
of
q@
pf]
whether
the
ignition
switch
is
on
-
or
off,
Connect
to
the
plus
(+)
Circuit
|
{clock
illumination,
small
lamp
Circuits,
etc.)
of
the
car's
lighting
Fuse
one
Yellow
lead
fey
To
positive
terminal
switch.
oq
=
Redlead
fuse4A
of
battery
(12V),
Connect
to
lead
wire
of
relay
for
the
power
thro
auto
antenna.
The
antenna
will
automatically
be
raised
and
Blue
lead
7 ;
lowered
by
turning
the
radio
switch
on
and
[
J
=
Front/right
side
speake:
off
(Max.
300mA
12V
DC).
2~
82
impedance
Green lead | Gray lead
Cs)
Gray/black
Green/biack lead lead
Black lead
Front/left side
speaker 2~ 8Q
impedance
Rear/left side speaker
Rear/right side speaker
2-82 impedance
2~ 8Q impedance

°
Two-speaker
High-power
System
:
Speaker mode
selector switch
Antenna connector
dSZ
Set
the
speaker
mode
selector
switch
to
2SP
when
using
the
2-speaker
high-power
system.
Speakers
for
the
2-speaker
high
power
system
have
maximum
power
output
of
over
20W,
so
be
sure
the
impedance
is
4
to
82.
Be
aware
of
the
fact
that
using
a
speaker
other
than
the
one
specified
can
cause
the
speaker
to
be
damaged.
A
special
BPTL
circuit
is
used
so
be
sure
that
you
do
not
connect
the
speaker
directly
to
ground
nor
join
the
left
and
right
speaker
(—)
leads.
To
car
antenna
——
This
wire
is
exclusively
for
the
Gil
Purple
lead
memory
back-up
dry
battery,
Remote
Control
(4
which
is
required
for
the
“Quick Release Mounting
Bracket’.
This
wire’s
Capacity
is limited to +4.5V~ + 6V.
Note: Do not cut or use for
any other purpose.
Connect to metal body
LO or chassis.
Connect to lead wire of relay
for the power auto antenna.
The antenna will automatically
be raised and lowered by turn-
ing the radio switch on and off
(Max. 300mA 12V DC).
Seek
Switch
I
=i
a
n>
=m
|
Connect
orange
lead
to
the
car's
battery
terminal
(DC
Fuse
0.54
Orange
lead
Black
lead
wire
12V)
which
will
supply
power
=
=
rang
(Ground)
regardless
of
whether
the
a
ignition
switch
is
on
or
off.
Connect
to
the
plus
(
+)
circuit
(clock
illumination,
Fuse
0.54
Vellowlead
Blue
lead
smail
lamp
circuits,
etc.)
of
@4—
|
aio
the
car's
lighting
switch.
Green
lead
Gray
lead
Lett
si
Green/black
lead
.
ra
oe
speaker
cs
=
‘
Right
side
speaker
Impedance
Hf
a
\
rae)
4~
8Q
impedance
cod
Meco
ge
Green
lead
u
Gray
lead
Mot
Fuse 4A
it i : Red lead
To
positive
terminal
a
<
Redes
of battery (12V). cI = Sn
4.
CIRCUIT
DESCRIPTION
OE:
.
¢
Level
Diagram
Graphic
2sP/
4sP
Power
Amp
Head
Equalizer
Amp
Dolby
NR
Amp
Flat
Amp
Equalizer
Balance
Volume
Selector
Speaker
YRt
ciot
{dBs}
Levei
Adj
fe
eae
+19,5
dBs
+10
ft)
Volume
Bowes
FM -8.4d8 Fed” ower Amp
6
Level
adj
<
yeas
+50
dB
~7.30B
7
|
Dolby
NR
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-20
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08s
+22dB
Amp
|
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Fiot
Amp
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Volume
=
at
+4548 “358
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:
2SP
/
4SP
Selector
Equalizer
Amp
a0
~50 +47 4B
\
~-60 |
|
TWO-
SPEAKER
-70-4 |
70-[=68.3d8s
{400H?
200
nwb/mi
+204
+15.5
Bs
+10
ATT
zi
=12.7¢eB
7
0
f
Volume
4
-8.2dBs
/
6.6057
:
2
Level
Adj
—
fa
moe
,
P
Al
10
Pon
ank
i
=
/
ower
Amp
4
-7.9dB
77
Vv
ss
+50d8
-20-
-22.3d8s
Doiby
NR
=
Pi
|
a
+22dB
Amp
_20,9das
¥/
1
-19.9dBs
s+
i
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Flat
Amy
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{
+4.5¢8 3.508
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/
Equalizer
Amp
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tle
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Head
;
FOUR
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SPEAKER
~70~[
63.398:
(400Hz
200
nwb/m)
Fig. 1
Fee ee

*
Block
Diagram
(KEH-9300SDK)
wie
pan
nen
cae
wm
2SP
/4SP
“2SP/4SP
—
Head
EqualizerAmp
70OuS
Mute
.
Dolby
NR
Attenuater
Flat
Amp
GraphicEqualizer
Balance
MainMute
Volume
Buffer
Gain
Switch
Fader
Selector
Ql
7
Ta
8
ee
fe
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‘
oe
©
lol
|
1:
03
Qi0
|
ee,
|
:
see
|
Qi0s
$2
O
Metal
MUTE
Switch
FF/REW
MUTE
O
$3
Metal
bh
Dolby
NR
Antenna
Switch
TUNER
Y
TAPE
+B
Ceramic
Noise
Tuner
FM
Front
End
Filter
|F
/Detector
Buffer
Filter
Suppressor
MPX
Decoder
Mixing
Mute
Buffer
(6)
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¢ Operation of FM Section
IF PNS MPX
Lch
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HIGH CUT
CONTROL
SEPARATION
CONTROL
ARC Mark iil
IF PNS MPX
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201_PAoOI3
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tl
OR
LEVEL
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CUT
|
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DETECTOR
CONTROL
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CONTROL
Boh
ARC
Mark
V
Fig.
5
ARC Mark V
The
high-cut
and
separation,
which
were
controlled
by
the
input
signal
strength
level
in
the
ARC
Mark
Ill,
can
also
be
controlled
by
the
noise
level
in
the
ARC
Mark
V.
Therefore
noise
in
strong
signal
areas,
impossible
to
suppress
before,
can
now
be
suppressed
adequately.
Input Level 35 dBuV Switch
The
noise
level
ceases
to
control
the
high-cut
and
separation
when
the
input
level
drops
below
35
dBuV,
and
control
of
these
is
carried
out
entirely
by
the
input
signal
strength
level.
This
is
the
same
as
in
the
Mark
Ill.
This
function
operates
in
this
manner
because
the
noise
level
contro!
will
always
output
a
signal
when
the
signal
strength
is
below
35
dBuV,
and
signal
Noise
Detector
Circuit
strength
control
is
sufficient
for
medium-weak
input
signal
Co-using
the
PNS
HIGH
PASS
FILTER,
this
operates
by
areas.
detecting
the
components
above
100
kHz
in
the
wave
detector
output.
The
HPF
output
is
amplified
to
a
sufficient
level,
rectified,
phase
reversed
and
then
DC
converted.
1. Front end section
|
RF
Amp
Block
Gain
1|dB————
MIX
Gain
10dB
sh
IF
Amp
Gain
18dB
13.48
Ceramic
21dB
Ceramic
ATT
ANT
RF
Amp
RF
Balun
Mixer
IFT
IF
Amp
Filter
IF
Amp
Filter
RF In ©
3
Fig. 6
The
RF
signal
from
the
antenna
passes
through
an
attenuator
constructed
as
a
band-pass
filter
and
is
sent
to
the
pi-shaped
matching
circuit,
where
high-end
spurious
response
is
improved.
The
signal
then
goes
to
the
next
stage,
the
RF
amp.
The
RF
amp
employs
a
MOS
FET.
capable
of
handling
a
wide
dynamic
range.
The
output
from
the
RF
amp
passes
through
a
parallel
resonance
circuit,
is
converted
to
a
bal-
anced
signal
from
an
unbalanced
by
a
balun
circuit
and
then
goes
to
the
mixer
stage.
This
is
a
J-FET
single
balance
type
mixer
which
can
accommodate
a
wide
dynamic
range.
One
of
the
IF
signals
from
the
mixer
passes
through
the
IF
amp
and
ceramic
filters.
Another
IF
signal
goes
to
the
AGC
amp.
This
AGC
amp
can
operate
even
in
the
presence
of
interference
signals.
The
AGC
amp
output
is
fed
back
to
the
RF
attenuator
circuit,
forming
a
wide
loop
AGC.
The
AGC
circuit
operates
at
antenna
input
levels
above
65
+
5
dB.
16
. IF detector section
A
single-tuning
quadrature
detection
is
performed
by
IC
PA0013
using
IF
amp
and
T201
to
obtain
an
audio
frequen-
cy
output.
. PNS section
This
is
a
pulse
noise
canceller
using
1C
PAO014
and
CR
composite
part
CR201
which
comprises
filters.
Multiplexer
section
Stereo
multiplexing
is
performed
by
IC
PAOQO15.
This
IC
does
not
operate
the
stereo
circuit
in
the
absence
of
cur-
rent
flowing
through
the
stereo
indicator
terminal
(pin
3).
. Muting of weak incoming signals
IC
PAQO13
develops
a
DC
voltage
at
pin
6
when
the
input
is
weak
or
detuned.
When
this
voltage
is
applied
to
pin
5
through
the
filter
consisting
of
capacitors
and
resistors,
the
attenuator
goes
into
operation.
The
on/off
(AUTO
/MONO)
of
this
weak
input
signal
muting
is
controlled.
The
stop
signal
for
the
seek
operation
uses
a
voltage
devel-
oped
at
pin
6.
(During
broadcast
reception,
the
voltage
is
atOV).
. Local station seeking
While
seeking
strong
signal
stations,
the
gain
of
the
front
end
is
decreased
by
making
the
voltage
at
AGC
terminal
in
the
front
end
4.5V
by
Q205.
¢ Operation of AM Section
Ic
HA12434
used
in
this
unit
is
designed
for
electronic
tuning
and
provided
with
the
output
circuit
of
the
stop
signals
for
seeking
and
VCO
buffer.
Its
feature
includes
a
wide-band
AGC.
1.
17
RF amplifier section
This
section
performs
a
single-tuning
2-stage
RF
amplifica-
tion.
The
first
stage
is
a
narrow-band
amplifier
section
con-
sisting
of
Q251
and
its
load,
i.e.,
resonance
circuit
(induct-
ance
of
1253,
and
capacitance
of
varicap
diode
D255-
1,
C291).
The
second
stage
is
a
section
consisting
of
RF
amplifier
1
inside
the
IC
and
its
load,
or
resonance
circuit
(inductance
of
T255,
and
capacitance
of
D255-2,
C292).
Pin
15
is
not
only
a
terminal
lead
to
which
the
load
of
RF
amp
1
is
connected,
but
also
an
input
terminal
pin
of
the
mixer
input.
. VCO section
The
VCO
(voltage-controlled
oscillator)
oscillates
at
its
resonant
frequency
by
the
feedback
circuit
from
pin
12
to
pin
13
and
the
resonant
circuit
connected
to
pin
13.
The
resonant
frequency
is
determined
by
the
inductance
of
1257
and
the
composite
capacitance
of
Ca,
Cs,
and
D255-
2.
Ca
is
a
padding
capacitor
connected
in
series
with
capaci-
tance-varying
varicap
diode
D255-3,
and
Cais
a
Capacitor
connected
in
parallel
with
varicap
diode
depending
on
its
grade.
All
this
contributes
to
better
tracking
with
the
RF
stage.
7.
Separation
control,
high
frequency
control.
Pin
17
of
1C203
(PA0015)
functions
as
the
separation
con-
trol
(SNC)
pin,
and
pins
18
and
19
function
as
the
high-cut
control
(HCC)
pins.
SNC
and
HCC
are
controlled
by
the
control
voltage
from
pin
17 of
1C201
{(PA0013).
The
control
voltage
can
be
varied
by
adjusting
semi-fixed
volume
VR201,
connected
to
pin
20
of
1C201.
SNC
and
HCC
are
controlled
by
the
input
signal
strength
level.
However,
these
are
also
controlled
by
the
noise
detector
level
from
IC202
(PA0014,
PNS),
unless
the
input
signal
Strength
is
below
35
dBuV.
The
noise
detector
output
from
pin
7
of
CR201
is
input
to
pin
16
of
1C201.
The
noise
detector
con-
trol
of
the
high-cut
and
separation
will
switch
on
above
35
dBuv.
. Mono/stereo
When
the
Mono
switch
is
turned
on,
pin
6
of
[C203
({PA0015)
will
be
grounded,
the
stereo
indicator
will
go
out,
and
the
output
will
switch
to
monaural.
Pin
5
(MUTE
DRIVE
PIN)
of
{C201
(PA0013)
will
also
be
grounded,
dis-
engaging
the
level
mute.
Only
for
model
KEH-
930)SDK,
pin
5
of
1C201
will
be
grounded
through
0315,
disengaging
the
level
mute.
Q315
will
go
off
when
the
SDK
switch
is
turned
on.
Thus
the
level
mute
will
not
be
disengaged.
. Mixer section 0
The
VCO
output
frequency
from
the
VCO
section
ard
the
input
signal
from
RF
amp
1
are
mixed
together
at
themixer
section
to
produce
the
IF
component
(450
kHz).
. IF section
The
intermediate
frequency
section
consists
of
the
It
filter
(450
kHz)
by
T259
and
CF251,
the
IF
amp
1
and
he
IF
filter
by
T260.
Pin
8
is
not
only
a
load
connecting
teminal
of
the
IF
amp
but
also
an
input
terminal
of
detector
ircuwit
1.
. Detector section
Pin
8
is
connected
to
the
detector
and
provides
an
utp
ut
to
pin
5,
audio
output.
This
output
contains
both
aud
fre-
quency
component
(AC)
and
DC
component.
.
AGC
section
(AGC
by
the
reception
frequency)
The
DC
component
of
the
detector
output
at
pin
5s;
de-
tected
by
AGC
amp
1
at
pin
1
by
passing
it
throug
the
filter
consisting
of
R273
and
C285.
The
AGC
starts
Oerat-
ing
at
an
input
level
close
to
the
maximum
sensitivity
The
output
of
AGC
amp
1
is
connected
to
AGC
amp
2
ard
controls
the
gain
of
RF
amp
1.
The
AGC
voltage
is
developed
at
pin
3
through
AGCanap
3,
and
current
flows
through
D251
and
D252,
lowerin
the
impedance.
Asa
result,
attenuation
is
effected.
;
When
0253
turns
on
and
the
load
impedance
of
theiragn
of
0.251
is
lowered,
attenuation
is
effected.
These
attnua-
tions
due
to
the
decrease
in
impedance
enable
AGC
Qeraa-

tion.
The
input
level
to
develop
a
voltage
at
pin
3
is
about
55
dBuV
during
reception
of
MW
999
kHz.
Thanks
to
the
AGC
operation
mentioned
above,..the
output
variation
characteristics
against
input
variation
are
broader
than
the
conventional
AM
characteristics.
7.
AGC
section
(wide-band
AGC)
The
wide-band
AGC
is
to
control
the
gain
of
the
RF
ampli-
fier
section
when
the
input
RF
level
at
pin
16
is
high.
This
is
intended
to
prevent
interference
due
to
the
saturations
of
RF
amp
0251,
RF
amp
1
in
the
IC,
etc.
Caused
by
a
large
input
other
than
the
reception
frequency.
Operation
is
as
follows:
ADC
voltage
corresponding
to
the
level
of
the
input
RF
is
developed
at
pin
2
by
amplifying
and
detecting
the
RF
signal
from
pin
16
by
RF
amp
2
and
detector
3
respectively.
This
is
delayed
by
the
time
con-
stant
of
C284
and
the
gain
of
this
portion
is
determined
by
R270.
By
applying
this
DC
voltage
to
AGC
amp
2,
the
AGC
at
RF
amp
1
and
AGC
at
0253,
D251
and
D252
are
effected.
8. Stop signal
The
stop
signal
for
seek
operation
is
produced
by
extract-
ing
the
IF
signal
from
the
secondary
winding
of
T8
and
adjusting
its
level
by
R287,
R286
and
R285.
This
signal
is
connected
via
450
kHz
filter
CF252
from
pin
7
to
IF
amp
2
to
detector
2.
This
output
appears
at
pin
6
and
becomes
0V
during reception.
9.
Locd!
station/distant
station
seek
During
local
station
seek,
252
turns
on,
whereby
C253
is
grounded.
The
impedance
of
C253
allows
attenuation
in
the
antenna
system.
¢
Frequency
Synthesizer
Section
(FM)
During
FM
reception,
a
combination
of
synthesizer
control
1C301
(the
frequency
dividing
ratio
is
controlled
to
1/64
or
1/66
by
1C301)
allow
the
slower
counter
method.
The
FM
VCO
is
frequency-divided
to
a
ratio
of
1/64
or
1/66
by
prescaler
IC301.
An
output
of
4.5
MHz
(X101)
which
becomes
a
clock
pulse
for
1C301
is
divided
into
1/180
by
the
reference
frequency
divider
to
produce
25
kHz
(all
this
is
processed
inside
1C301).
Since
the
reception
frequency
is
87.5
~
108.0
MHz
and
the
inter-
mediate
frequency
(IF)
is
10.7
MHz,
the
oscillator
frequency
of
VCO
willbe
98.2
~
118.7
MHz.
As
the
overall
frequency
division
ratio
is
7856
~
9496,
the
out-
put
of
the
programmable
counter
inside
1C301
will
be
25
kHz.
This
output
is
compared
in
phase
with
a
reference
frequency
of
25
kHz
by
the
phase
detector
in
1€301,
and
is
output
to
pin
12
of
1C301.
The
loop
filter
consisting
of
Q310
and
0312
converts
the
signal
into
a
DC
voltage
signal
which
in
turn
controls
the
tuning
circuit
in
the
front
end
section
asa
tuning
voltage.
KEH-S300SDK
OUTPUT Choracteristics of
{dB) conventional circuits
Characteristics of this
unit circuit
jo.~O*~*«
50
60
(dBav)
Fig. 7
Antenna
Synthesizer
Control IC
VCO FREQUENCY
= —'
FM TUNING
VOLTAGE
Loop Filter
Fig. 8
18

D KEH-S300SDK_
¢ Frequency Synthesizer Section (MW)
The MW section employes a direct frequency dividing
method. So that the reception frequency is incremented in 9
kHz, the frequency of the phase comparator is 9 kHz. This is
produced by dividing 4.5 MHz (the output of X101), a clock
frequency of 1C301, to 1/500. Since the reception frequency
range is 531 ~ 1,602 kHz and the intermediate frequency is
selected at 450 kHz, the frequency of the local oscillator
(VCO) will be 981 ~ 2,052 kHz.
This output is output from pin 12 of IC5 and enters pin 9 of
1C301.
If the frequency dividing ratio of the programmable counter in
1C301 is set to 109 ~~ 228, the output will be 9 kHz. This fre-
quency is compared in phase with a reference frequency of 9
kHz by the phase comparator and is output from pin 12 of
1C301.
The signal is converted into a DC voltage signal by the loop
filter consisting of Q310 and Q311, which in turn controls the
tuning circuit as a tuning voltage.
a
* The Functions of Control IC (PD4041)
PD4041
is
a
52-pin
flat
package
C-MOS
LSI
which
controls
10
kHz
incremental
tuning
for
FM,
9
kHz
incremental
tuning
for
AM.
This
PLL
type
frequency
synthesizer
tuner
control
IC
makes
possible
7-segment
digital
display.
Since
this
IC
employs
a
static
method
for
the
display
driver,
the
performance
of
the
receiver
is
improved.
KEY BOARD
MUTING
CIRCUIT
19
PD 4041
Antenna Synthesizer
VY
RF
Control
1C
MW TUNING
VOLTAGE
Fig. 10

¢ Frequency Synthesizer Section (LW)
The LW section employs a direct frequency dividing method.
So that the reception frequency is incremented in 1 kHz, the
frequency of the phase comparator is 1 kHz. This is produced
by dividing 4.5 MHz (the output of X101), which is a clock fre-
quency of 1C301, into 1/4500.
Since the reception frequency range is 155 ~ 281 kHz and the
intermediate frequency is selected at 450 kHz, the frequency
of the local oscillator (VCO) is 605 ~ 731 kHz. This output is
output from pin 12 of 1C251 and enters pin 9 of 1C301.
IF the frequency dividing ratio of the programmable counter in
1C301 is set to 605 ~ 731, the output frequency is 1 kHz. This
is compared in phase with a reference frequency of 1 kHz by
the phase comparator and is output from pin 11 of 1C301. The
output signal is converted into a DC voltage signal by the loop
filter consisting of Q311 and Q312, which in turn controls the
tuning circuit as a tuning voltage.
e ControlIC PD4041
CE £02 EOI GND AM FM
KEH-S300SDK
Antenna i Synthesizer
RF_ Amp AM_Tuner Control IC
LW TUNING
VOLTAGE
Loop Filter
Fig. 11
VDD COMI COM2 LCDI LCD2 LCD3 LCD4
5 BEAT
SWLLOW
COUNTER
384 BIT
(4 BIT x 96 WORD)
vod tcdD LCD LCD LOCO Lcd LCD
23 22 2l 20 19 18
Fy, “12
.20

¢ PIN FUNCTIONS (PD4041)
Pin
No.
Pin
Name
vo
Function
and
Operation
34
LCD23
These
are
the
segment
signal
output
terminals
to
the
LCD
panel.
Using
the
matrix
of
COMON
1
2 2
and
COMON
2,
up
to
an
maximum
of
46
dots
can
be
display.
The
data
output format
will
use
PLA
52
Lc5
for
the
numerical
figures.
Symbols
and
letters
data
will
be
directly
output
from
the
data
memory
} LCD4 OUT (RAM).
U
4 LCD1
5
COM2
OUT
These
are
the
common
signal
output
terminals
to
the
LCD
panel.
The
three
values
of
GND,
6
COM
1
1/2VDD,
and
VOD
(5ms
intervals)
will
be
output
in
50
Hz
cycles.
The
segment
that
registers
and
|
L
VDD
voltage
differential
between
these
terminals
and
LCD
1-LCD
23,
will
light
up.
7
VDD
These
are
the
power
supply
terminals
for
the
device,
supplying
a
voltage
of
5V
+
10%
when
the
33
VDD
device
is
operating.
The
voltage
can
be
lowered
to
2.5V
when
the
internal
data
memory
(RAM)
is
to
be
maintained
(carry
out
CKSTP
command).
The
device
will
be
recept
when
a
voltage
of
zero
~4.5V
is
supplied
to
this
terminal,
and
a program
will
start
from
address
0.
NOTE:
Since
pin
7
and
pin
33
are
connected
together
inside
the
divice
it
is
sufficient
to
supply
the
power
voltage
to
one
of
these
terminals.
8
FM
“IN
This
accepts
the
VCO
output
from
10
~
155
MHz
(0.5
Vp-p
MIN).
This
is
divided
down
by
1/2
inside
the
device
by
using
the
pulse
swallow
method.
It
also
features
a
built-in
AC
amplifier,
and
therefore
the
DC
components
should
be
removed
from
the
signal
by
using
a
capacitor
firstbefore
entering
the
signal
into
the
device.
9
AM
IN
This
accepts
the
VOC
output
from
0.5
~
50
MHz
(0.3
Vp-p
MIN).
This
is
selected
and
goes
active
when
the
direct
dividing
method
is
used.
It
also
features
a
built-in
AC
amplifier,
and
therefore
the
DC
components
should
be
removed
from
the
signal
by
using
a
capacitor
first
before
entering
the
signal
into
the
device.
10
GND
GND
Terminal
a +
1
EO1
OUT
This
is
the
charge
pump
output
from
the
phase
detector
that
forms
the
PLL.
When
the
divi¢ed
os-
cillation
frequency
is
higher
than
the
reference
frequency,
these
terminals
will
output
a
high
level
12
E02
signal.
When
the
divided
oscillation
frequency
is
lower
than
the
reference
frequency,
these
ter-
minals
will
output
a
low
level
signal.
Since
the
same
signal
will
be
output
from
both
EO1
and
EO2,
either
terminal
can
be
selected
as
desired.
13
CE
IN
This
is
the
device
select
signal
input
terminal.
This
terminal
should
be
set
to
high
level
when
the
device
is
to
be
operated
normally,
and
set
to
low
level
when
the
device
will
not
be
used.
Hewever
it
will
not
accept
an
input
under
135
ys.
we:
14 NC
15
Xl IN
This
the
quartz
oscillator
connection
terminal
to
which
is
connected
a
4.5
MHz
quartz
osdilator.
Adjust the oscillation frequency (4.5 MHz) by monitoring terminal XO.
| 16 XO |
1
17
SD
:
IN
During
auto
tuning
and
SDK
search,
this
input
terminal
detects
whether
a
broadcast
statin
has
'
been
received
or
not.
It
will
stop
the
tuning
when
a
high
level
input
is
received.
(Read
in
SOX
S$
TP
i
|
i
and
AND
for
SDK
search)
However,
an
input
must
be
received
within
45ms
after
the
PLL
has
{
|
locked.
(Within
75ms
for
LW
reception)
L 4. 4
18
|
FM/MW
|
OUT
This
is
the
FM/MW/LW
select
signal
which
is
output
from
the
device.
i 19 | LW |
f + :
i
20
LOC/DX
QUT
This
is
the
LOC/DX
select
signal
which
is
output
from
the
device.
A
high
level
signal
will
be
putpout
:
for
the
LOC
mode.
r
r
T
;
,
21
K3
IN
These
are
the
key
return
signal
input
terminals
for
an
external
key
matrix.
2 2
24 KO |
1 +
25
j
PB3
These
are
the
key
return
signal
source
terminals,
set
to
active
high.
The
external
diodes
an
be
e 2 deleted.
28 PBO
OUT
! 29 PC3
| 30 PC2
31
SOK
OUT
High
level
signals
from
the
device
are
output
to
this
terminal
for
the
SDK
mode
(Traffic
iNbrnma-
tion
etc).
32
MUTE
OUT
This
muting
output
terminal,
set
to
active
low,
eliminates
the
shock
noise
when
the
PLLbcle
is
disengaged.

VPIONEER
ervice
— ORDER NO.
The
photo
shows
the
model
KEH-9300SDK
CRT-387-0
CASSETTE
CAR
STEREO
WITH
FM/MWILW
ELECTRONIC
TUNER
KEH-S300S
PX
we
KER-9300
CASSETH&CAR
STEREO
WITH
FM/AM
ELECTRONIC
TUNER
KEH-S0O00O
..
¢
Forthe
circuit
and
mechanism
descriptions,
please
refer
to
the service
manual
(CRT-398).
*
‘Dolby’
and
the
double-D
symbol
are
trademarks
of
Dolby
Laboratories
Licensing
Corporation.
e
Noise
Reduction
System
manufactured
under
license
from
Dolby
Laboratories
Licensing
Corporition.
CONTENTS
Vee
PARTS
LIS
Tha
creesectcorace
a
84
edd
ain
doe
ob
be
dosauedes
Geass
1
5.
CONNECTION
DIAGRAM
2.
DISASSEMBLY
............
00. ccc
eee
eee
2
(KEH-9300SDK)
.....
00...
.
ccc
ccc
eee
ce
nee
16
3.
ADJUSTMENT
6.
SCHEMATIC
CIRCUIT
DIAGRAM
3.1
Dolby
NR
Level
Adjustment.........-......
3
(KEM
SOOO)
i
Santee
tabi
s
tera
ty
Sith
et
ds
Me
20
3.2
Decoder
Adjustment.................00005
3
7.
CONNECTION
DIAGRAM
3.3
FM
IF
Adjustment......
rst
Moe!
dea
teipaneto
Tar
acura
coe
c
4
(IKE
9300)
8
eiccaut
ices
oie
cane
scitnactmreeeninedon
ats.
ccd
24
3.4.
FM
MPX
Adjustment
..............0.20005
4
8.
SCHEMATIC
CIRCUIT
DIAGRAM
3.5
Separation
Adjustment...............0.00,
4
HIKEH29000)csfect
ces
tes
bea
apd
anor,
¥
od
xo
...28
3.6
FM
ARC
Adjustment.
.........
00.0000
eee
40
9.
CONNECTION
DIAGRAM
3.7.
FM
Tracking
Adjustment
...............05.
5
(ICEH-9000)
ao
ia
ok
Reh
cseet
te
Seacands
aeeeacle
Oy
ativan
Fans,
Sei
Se:
3.8
AMIF
Adjustment
................0000008
6
10.
ELECTRICAL
PARTS
LIST.................
...36
3.9
AM
Tracking
Adjustment
................0.
7
11.
CABINET
EXPLODED
VIEW
............
ais
end
4.
SCHEMATIC
CIRCUIT
DIAGRAM
12.
TUNER
AMP
ASSY
(1/2)
EXPLODED
VIEW...
...45
(KEH-9300SDK)
.....
0...
eee
eee
eee
12
13.
TUNER
AMP
ASSY
(2/2)
EXPLODED
VIEW...
...47
14.
PACKING
METHOD...................
wa.
2+
50
PIONEER
ELECTRONIC
CORPORATION
41,
Meguro
1-Chome,
Meguro-ku,
Tokyo
153,
Japa
PIONEER
ELECTRONICS
[USA]
INC.
P.O.
Sox
1760,
Long
Beach.
California
90801
U.S.A.
PIONEER
ELECTRONIC
[EUROPE]
N.V.
Keetbergiaan
1,2740
Beveren,
Belgium
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-1384
Boundary
Road,
Braeside,
Victoria
3195,
Australi
EK © DEC. 1983 Prirad ins Japan

e Cassette Mechanism Unit
See
the
Service
Manual
CX-146/C
(CRT-324)
when
servicing
the
cassette
mechanism
unit.
The
differences
from
the
CX-146/C
are
shown
below.
Exploded View (Page 14)
|
CX-146/C
KEH-9300SDK,
9300,
9000
Mark
|
No.
Part
No.
|
Description
“|
Part
No.
|
Description
|
38.
CNL-286
P.C.
Board
|
CNP-925
P.C.
Board
kw
|
41.
|
CPB-102)
|
Head
|
CPB-066or
|
Head
|
|
|__CPB-356
¢
KEH-9300SDK
Motor
Heat
Sink
Unit
*
&
CXM-104
CXD-123
Tuner Amp Assy
“pt CWM-209
Knob
* CAA-501
¢ KEH-9300, 9000
Motor
* & CXM-104
Heat Sink Unit
CXD-123
Tuner Amp Assy
CWM-211 (KEH-9300)
CWM-210 (KEH-9000)
Knob
* CAA-501
Knob .
* CAA-502
Knob
* CAA-502
Grille Assy
CXD-119
Grille Assy
CXD-166
Button (FF/REW)
* CAC-554
Button (FF/REW)
* CAC-554
Cassette Mechanism Assy
CXK-130
Fig. 1
FM Front End
CWB-151
Cassette Mechanism Assy
CXK-310
reed