Kenwood KR-4140 User manual

KENWOOD
HI/Fl STEREO COMPONENTS
SERVICE MANUAL
KR-4140
SOLID STATE AM-FM STEREO RECEIVER

PARTS DESCRIPTION LIST
MAIN CHASSIS (AEOK) SECTION
PC BOARD
RF UNIT
(UA1125K)
1F UNIT (UA1224K)
MPX UNIT (75S)
PRE, TONE & MAIN (UA6001J3)
X01-0025-10
X02-0020-10
X04-0010-10
X09-0013-03
Symbol No.
Description
Part No.
Remarks
CAPACITOR
Ci
C101
C111
C112
C113
C114
C171
C201
C211
C212
C213
C214
C301
C302, 303
C304
C305
C306
Electrolytic Tubular
Mylar
Mylar
Mylar
Mylar
Mylar
Electrolytic Block
Mylar
Mytar
Mytar
Mylar
Mylar
Oil tmpregnated
Oil tmpregnated
Electrolytic Block
Electrolytic Tubular
Electrolytic Tubular
100uF
0.027 uF
0.0015uF
0.068uF
0.018uF
0.0056uF
2200uF
0.027pF
0.0015uF
0.068uF
0.01 8uF
0.0056uF
0.01 uF
0.02uF
2200uF
470uF
100uF
3.15WV
+20%
+20%
+20%
+20%
+20%
35WV
+20%
+20%
+20%
+20%
+20%
+100%,
+20%
5OWV
35WV
16WV
CEO4WOF 101
CQ92M1H273M
CQ92M1H152M
CQ92M1H683M
£092M1H183M
CQ92M1H562M
CE62AW1V222
CQ92M1H273M
CQ92M1H152M
CQ92M1H683M
CQ92M1H183M
CQ92M1H562M
CP052W103P
CP02B2J203M
CE62AW1H222
CEO2W1V471
CEO2W1C101
RESISTOR
R1
R101
R102
R111, 112
R113
R114
R171
R172
R173
R201
R202
R211, 212
R213
R214
R271
R272
R273
R301
R302
R303
R304
R305
R306
R307, 308
R309
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Fitm
Insulated Carbon Film
Fixed Carbon Composition
Fixed Carbon Composition
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Fixed Carbon Composition
Fixed Carbon Composition
Fixed Carbon Composition
Fixed Carbon Composition
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Meta! Film
Fixed Carbon Composition
Fixed Carbon Composition
Fixed Carbon Composition
+10%
£10%
+10%
+10%
+10%
£10%
£10%
£10%
+10%
+10%
10%
£10%
+10%
+10%
+£10%
£10%
+10%
+10%
+5%
15%
+5%
+5%
+10%
10%
+10%
PD14BY 2E561K
PD14BY 2E 104K
PD14BY 2E394K
PD14BY 2E 103K
PD14BY 2E472K
PD14BY 2E273J
RCOSGF 2H102K
RCO5GF 2H331K
PD14BY 2E 102K
PD14BY 2E 104K
PD14BY 2E394K
PD14BY 2E 103K
PD14BY 2E472K.
PD 14BY 2E273J
RCO5GF 2H102K
RCO5GF 2H331K
RCOS5GF 2H560K
RCOSGF 2H 102K
RW14AG3S1515
RW14AG3G561J
RW14AG3S681J
RN14AB3D 102J
RCOSGF 2H152K
RCO5GF 2H220K
RCOS5GF 2H 222K

PARTS DESCRIPTION LIST
Symbol No.
Description
VOLUME =_ (50k2.B) Dual
BALANCE (100kQW) Slide
BASS (50k2A) Dual
TREBLE (50kQA) Dual
POTENTIOMETER
a
RO6-4005-05
R13-4005-05
RO8-4042-05
RO08-4042-05
TRANSISTOR/DIODE/THERMISTOR
~ 2SD155
28D234
$1802-03B
18338T
5T-31
SWITCH
SELECTOR (Rotary) F°4:14-4
MODE (Rotary) F°2°4°5
LOUDNESS (FIVE Pushbutton)
TAPE MONITOR (FIVE Pushbutton)
MUTING (FIVE Pushbutton)
' LOW FILTER (FIVE Pushbutton)
HIGH FILTER (FIVE Pushbutton)
SPEAKERS (Rotary) F°1°4-4
PRE-MAIN SEPARATE SW (Slide)
Chassis
Frame
Panel
Sub-Panel
Reflector (A)
Sole Plate
Thermistor Holder x 2
Antenna Holder
Meter Holder
Ring
Name Plate (for Antenna)
Front Glass
Filter
Decorated Panel
Dial
Diat Pointer
Pilot Lamp (Fuse Type) x 4
Pilot Lamp
Meter
Certification
Decorated Panei
Schematic Diagram
Flywheel
Dial Spring
Small Pulley x 2
Smali Bushing x 4
Small Bushing x 4
Dial Metal Fittings
Pulley
$04-4012-05
$04-2037-05
$41-5001-05
$41-5001-05
$41-5001-05
$41-5001-05
$41-5001-05
$04-1024-05
$10-22D
A10-0210-01
A15-0002-04
A20-0326-05
A23-0076-02
A33-0009-03
A40-0058-03
A90-310B
A5065
A5107B
BO7-0064-04
B09-190
B10-0033-02
B19-0087-03
B42-0225-02
B20-0160-03
B21-4001-05
B30-0015-15
B30-0033-03
B31-0006-05
B42-0009-04
B42-0225-03
B52-0076-00
DO5-52B
D06-02
DO9-14B
D10-05
D10-09
D11-13
D15-0058-04

PARTS DESCRIPTION LIST
Symbol No.
Description
Part No.
Remarks
Dial Shaft
Pin Jack (1P)
Pin Jack (4P)
Pin Jack (6P)
AC Outlet x 2
PHONE Jack
Pin Jack with DIN Connector (4P)
Pilot Lamp Socket
MIC Jack x 2
Transistor Socket x 4
Radiator
Felt with Sticker
Dust Sheet
Shield Plate (for Radiator)
Insulating Plate (for Power SW)
Rubber Bushing
Legs x 4
Cord Bushing
AC Cord Bushing
Corrugated Cardboard Case
Warranty Card
Fuse Holder x 4
Front Glass Holder x 2
Front Glass Holder x 3
Meter Holder
Dial Holder
Meter Holder
Front Glass Holder x 2
Switch Holder
P. C. Board
P. C. Board
Knob (TUNING)
Knob (SPEAKERS, BASS, TREBLE, MODE, SELECTOR, VOLUME)
Knob (BALANCE)
Power Transformer
FM Antenna
Ferrite Loopstick Antenna
Chocke Coil
Fuse Holder
Feeder Holder
Switch Stopper
Slider
AC Cord with Plug
In USA added to the parts of (K),
In PX added to the parts of (U)
Case (K)
Rear Panel (K)
Rear Panel (U)}
Amp Holder x 2 (K)
Holey Plate (U)
Caution Sticker ; (U)
D20-0079-03
E08-11C
E08-14G
E08-16D
E08-0205-05
E11-0002-05
E13-0401-05
E15-0033-05
E16-22
E4086
F01-0001-13
F15-0008-04
F15-0054-04
F10-0185-03
F20-0027-04
G02-020
G10-02
G11-19
G11-25
H01-0507-03
H26-02
J13-0023-05
J19-0029-14
J19-0062-04
J19-0063-03
J19-0064-04
J19-0065-03
J19-0091-04
J21-0703-04
J25-0062-04
J25-0063-04
K23-0047-03
K23-0049-03
K23-005 1-04
LO3-0006-05
L10-04
L15-39
L20-010
$15-13
$21-29
$4103
$4132
WO09-15
A01-0124-02
A23-0165-02
A23-0167-02
A3882
BO4-0017-14
BO9-192

Symbol No.
Description
Part No.
Remarks
Caution Sticker (K)
Caution Sticker (K)
Caution Sticker (K)
Instruction Manual (K)
Instruction Manual (U)
Caution Card (U)
Pin Plug x 4 (U)
Fuse (2A) (K)
Dial Cover (U)
Insulating Plate (K)
Insulating Plate (K)
Corrugated Cardboard Case (K)
Warranty Card (U)
Caution Card (for Case) (K)
Address (U)
Caution Card (for AC VOLTAGE SELECT)
Switch Stopper (U)
Decorated Screw x 4 (K)
Decorated Screw x 4 (U)
Fuse
(2A)
(U)
AC VOLTAGE SELECT (U)
Power SW (Pushbutton) (U)
Power SW (Pushbutton) (K)
B42-0046-04
B42-0219-04
B42-0220-04
B50-0480-00
B50-0481-00
B58-0003-00
E09-410
FO5-2021-05
F07-0171-03
F20-0023-03
F20-0030-03
H02-01 10-03
H26-17
H4068
H4156
H4190
4J19-0082-04
NO8-0003-04
NO8-0005-04
$17-02
$31-2004-05
$39-1010-05
$39-1011-05
Fae ke rn aE tala abate ee Pee 8 a

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SYMPTOMS:
A. When there is load hum at the speakers.
B. When there is no output at all.
C. When you cannot get rated output.
REPLACING METHOD:
Replace all the four transistors, 2SD155.
TESTING PROCEDURES:
Until
replacement
is
completed,
do
not
operate
the
unit
without
first
testing.
Perform
the
test
according
to
the
following
procedures.
1.
Using
variable
transformer,
lower
the
AC
line
voltage
to approximately 30 V.
2.
Also
measure
the
voltage
between
the
chassis
and
Collector
of
the
power
transistor
Q2
or
Q3.
If
a
tester
indicates
approximately
25
V,
it
is
normal.
3.
Using
a
tester,
measure
the
voltage
between
the
chassis
and
Collector
of
the
power
transistor
Q1
or
Q4.
Ifa
pwdicales AO SOV, it is
PROTECTION ADJUSTMENT PROCEDURES:
The protection circuit in “UA6001J3” is a non-adjustment
circuit. But, check the circuit for normal operation as
follows for cautipns sake;
With a 8 ohms dummy load and an oscilloscope connected
in parallel to the output terminal, place the controls on
“KR-4140” in their normal positions.
Apply a signal of 1,000 Hz to the input and adjustment the
volume control until “UA6001J3” provides an output of
10 W as measured across the dummy load. Try to short
across the dummy and then restore it to the normal
connection under the above conditions and check to see
that the scope sweeps with no waveform once and then
with the waveform represented, thereby showing that the
protection circuit is operated normally. If the protection
circuit fails to operate, turn off the power switch immedi-
ately, otherwise the final stage transistors may be damaged.
And then check transistors, Qe17 ~ 19 and Diodes, De5, 6
whether they are good or not.
BOTTOM VIEW OF TRANSISTOR
Von
2SD155
Normal.
——
Bo
° 66
°
CASE
COLLECTOR
a3
a4
a2
a1
LEFT
RIGHT
CHANNEL
CHANNEL
25V
-50V
25V
50V
COLLECTOR
COLLECTOR
COLLECTOR
COLLECTOR

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| ALIGNMENT PROCEDURE
sts
Instruments:
Warm-up:
Selector SW:
Alignment tool:
Dummy
Antenna
TUNER SECTION
FM ALIGNMENT PROCEDURE
FM SG, AC VTVM & Oscilloscope
Allow 30 minutes warm-up period for receiver and equipments
Always place in FM AUTO position
FM SSG
Coupling | Input Signal
NATOR
RF AMP
CIRCUIT
RF AMP
CIRCUIT
Direct
High side
to (A)
Low side
to Chassis
10.7 MHz
(Unmod.)
Tuning Dial
Setting
Output
Indicator
Adjust
IF transformers require a plastic screwdriver-type alignment tool.
Remarks
Any non-
interfering
setting
300 ohm
Carbon
Resistor
DISCRIMI-
300 ohm
Carbon
Resistor
300 ohm
Carbon
Resistor
FM 400 Hz (Mod.)
Antenna 75 kHz (Dev.)
Terminal 0.5~1mVv
(Input)
90 MHz
FM 400 Hz (Mod.)
Antenna 75 kHz (Dev.)
Terminal 1.5 ~2uV
(Input)
98 MHz +
une for
maximum
using tuning
indicator
90 MHz
Tuning Indicator
VTVM at
LEFT output
jack of
TAPE REC
VTVM & X-tal
earphone at
jack of TAPE
REC
106 MHz:°
FM 400 Hz (Mod.)
Antenna 75 kHz (Dev.)
Terminal 1.5~2yuV
(Input)
Repeat steps 3 & 4 until n
106 MHz
VTVM & X-tal
earphone at
LEFT output
jack of
TAPE REC
(UA1125K)
Tal
(UA1224K)
Lb2, 3, 5 Top
& Buttom
(UA1224K)
Lb8 Top &
Bottom
(UA1125K)
Lal ~La4
(UA1125K)
CTal ~CTa5
Maximum Deflec-
tion
Maximum Deflec-
tion
Maximum Deflec-
tion
Maximum Deflec-
tion
further improvement is possible.
OUTPUT
LEVEL
300 ohm
Carbon
Resistor
98 MHz
400 Hz (Mod.)
75 kHz (Dev.)
1m V (Input)
FM
Antenna
Terminal
Tune for
maximum
using tuning
indicator
VTVM & X-tal
earphone at
LEFT output
jack of
TAPE REC
(UA1224K)
VRb1
Set the output
level to 1V
1. Instruments:
2. Selector SW:
3. Warm-up:
Audio Signal Generator
Coupling
FM MPX ALIGNMENT PROCEDURE
(a) SCA FILTER
Audio SG, AC VTVM & Oscilloscope
Always place in FM AUTO position
ALIGNMENT PROCEDURE
Allow 30 minutes warm-up period for Receiver and equipments
Audio Signal Generator
Frequency
AC VTVM & Oscillo-
scope Coupling
High side to (B)
Low side to chassis
1. Instruments:
2. Selector SW:
3. Warm-up:
FM SSG
Modulation
engin Frequency
67 kHz
(0.5 V)
High side to (C)
Remarks
(X04-0010-10)
Low side to chassis Le3
(b) MPX
FM SG, Audio SG, AC VITVM & Oscilloscope
Always place in FM AUTO position
Minimum Deflection
Allow 30 minutes warm-up period for Receiver and equipments
(Field Strength:
19 kHz
Carrier
Teapot Switch
Selector
VTVM &
Oscilloscope
Connection
Adjust
FM Antenna
Terminal GPP
OFF
High side to (C)
Low side to chassis
1000uV at Antenna Terminal)
Remarks
(X04-0010-10)
Lcl1, Lc4
FM Antenna
Terminal
OFF or
400 Hz
A+Bor
REVERSE
OFF
To distant of
Antenna
Terminal
A PHASE
REVERSE
LEFT or RIGHT
output jack of
TAPE REC
FM Antenna
Terminal
Aor LEFT
(X04-0010-10)
VRcl
Maximum Deflec-
tion
Beacon Lamp
“ON”
(X04-0010-10)
Lce4
To obtain a wave
form with maxi-
mum amplitude
at 400 Hz on
oscilloscope
RIGHT output
METER
SETTING
300 ohm
Carbon
Resistor
98 MHz
400 Hz (Mod.)
75 kHz (Dev.)
1 mV (Input)
FM
Antenna
Terminal
Tune for
maximum
deflection
VTVM &
X-tal ear-
phone at
LEFT out-
put jack of
TAPE REC
Tuning
Indicator
(UA1224K)
Lb7
VRb2
64?
indicator
FM Antenna
Terminal
B or RIGHT
LEFT output
—___
Repeat steps 4 & 5 until no further improvement is possible.
(UA6001J3)
VRd1
Minimum Deflec-
tion
(UA6001J3)
VRd1
Minimum Deflec-
tion

,
ALIGNMENT PROCEDURE
(c) BEACON LAMP
FM Stereo Signal Generator 19 kHz AC VTVM DC VTVM
Pilot Selector or Circuit
; ? Oscilloscope Remarks
Modulation Input Carrier Switch ea ae Tester
; Connection ;
Frequency Selector Switch Connection
Coupling
FM
f
B L
rere
DEV.
40
kHz
NORMAL
ON
OFF
(UA1224K)
eacon
Lamp
‘ 1mV VRb4 ON
Terminal
Beacon La
FM DEV. 67.5 kHz LEFT or RIGHT (X04-0010-10) mae
Antenna NORMAL OFF
Threshold of
j
VRcl
Terminal
6.5
uV
output
jack
light ON
ADJUSTING THE SQUELCH
(MUTING)
When the MUTING SW is set to “ON” position with ANT input at ImV, Remember the audio output (AF).
And then at ANT input of 3uV with MUTING SW set to the above, adjust VRb3 (UA1224K) so that the audio
output is attenuated to below —40dB.
Next at ANT input of 10¢V with MUTING SW set to the same, check the audio output so as to be attenuated to
within —1dB.
11

ALIGNMENT PROCEDURE
AM ALIGNMENT PROCEDURE
Alignment tools: IF transformers require a plastic screwdriver-type alignment tool.
Instruments: AM SG, AC VTVM & Oscilloscope.
Selector SW: Always place in AM position.
Warm-up: Allow 30. minutes warm-up period for Receiver and equipments.
AM Signal ignal
Dummy cae Signa Selector | TuningDial | Indicating
Generator Generator
Antenna Switch Setting Meter | Adjust Remarks
Coupling Frequency
High side to AM 455 kHz Any non-
Direct antenna terminal, (400 Hz intefering
Low side to chassis 30% AM) setting
Tuning (UA1224K) Maximum
Indicator Lb4, 6,9 Deflection
Connect to short
loop of wire, 600 kHz Tunin (UA1224K)
Radiate signal into | (400 Hz 600 kHz | | ee Lb10, 11
ferrite loop stick 30% AM) AM ANT.
antenna of receiver
Connect to short oa
loop of wire, 1400 kHz
Direct Radiate signal into (400 Hz 1400 kHz
ferrite loop stick 30% AM)
antenna of receiver
Maximum
Deflection
Tuning (UA1125K) Maximum
Indicator CTa5 ~6 Deflection
Repeat steps 2 & 3 until no further improvement is possible.
12

@kKENWooD.
SCHEMATIC DIAGRAM
BOTTOM VIEW OF TRANSISTOR
2SK19(GR)or(BL)
SEALED CIRCUIT
Ros OOK For
"WY" 607.04
“dhe
Tcal
_ FOP. cal Nop
if ss
kr TCa2
t ae 34 \OP
(KR-4140) (KR-5150)
07 04
oa
|
|
|
i
|
|
|
|
pro-on-
Qal 2SKI9~-(Y)ornGR)
© Qa2 2SKI9-(Y)or{ BL)or(GR)
Qa3 28C785(R)

@kENWOOD. SMCOAUUC IETS
PARTS DESCRIPTION LIST
Symbol No.
Description
Part No.
Remarks
CAPACITORS
Cal
Ca2
Ca3
Ca4
Ca5
Ca6
Ca7
Ca8&
Cai10, 11
Ca12
Ca13, 14
Cai5
Cai6, 17
CTal, 2
CTa3
CTa4, 5
V.C.
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic Trimmer
Ceramic Trimmer
Ceramic Trimmer
Variable Capacitor
10pF
100pF
0.01 nF
15pF
0.01pF
15pF
0.04uF
0.01yF
0.01 uF
18pF
20pF
15pF
0.01 uF
+0.5pF
£10%
+10%
+10%
CC94TH1H100D
CC94SL1H101K
CK94YG1E103
CC94TH1H150K
CK94YG1E103
CC94TH1H150K
CK94YG1E403
CC94TH1H103
CC94TH1H103
CC94TH1H180K
CC94CH1H200J
CC94CH1H150J
CK94YG1E103
C4636
C4035
C4036
D01-146
RESISTORS
Ra2
Ra3, 4
Ra5
Special Insulated Carbon Film
Special Insulated Carbon Film
Special Insulated Carbon Film
2SK19-Y
2SK19-GR
2SK19-BL
Special Insulated Carbon Film
Special Insulated Carbon Film
Special !nsutated Carbon Film
Special Insulated Carbon Film
Special Insulated Carbon Film
4702
100kQ
1.2kQ
1.2kQ
1.8k2
3.3k2
4702
5602
12kQ
8.2k2
1kQ
+5% or 10%
+5% or 10%
1.8kQ or 3.3kQ
+5% or 10%
+5% or 10%
+5% or 10%
+5% or 10%
+5% or 10%
+5% or 10%
1/8W
1/8W
1/8W
1/8W
1/8W
PD14BY 2B471J3
PD14BY 2B104J
PD14BY 2B1225
PD14BY 2B182J
PD14BY 2B332J
PD14BY 2B471J
PD14BY 2B561J
PD14BY 2B123J
PD14BY 2B8225
PD14BY 2B102J
TRANSISTORS/THERMISTOR
2SK-19 (Y) or (GR)
2SK-19 (Y), (GR) or (BL)
2S5C785-R
SDT-06
COILS/TRANSFORMERS
RF Coil
RF Coil
RF Coil
VHF OSC Coil
FM IFT
MISCELLANEOUS
PC Board
Front Chassis
Front Rear Panel
Front Shielding Board
Front Cover
Coil Spacer
L24-UA1125KRA
L24-UA1125KRB
L24-UA1125KRC
L34-0002-04
L52-10
$23-316
A03-UA11295
A08-UA1125K
A13-UA1125K
A90-UA1125K
J30-0009-14
© 1970-6 PRINTED IN JAPAN (G)

@KENWOOD.
IF
(UA1224K)
SECTION
(KR-4140)(KR-77)
SCHEMATIC .DIAGRAM
BOTTOM VIEW OF TRANSISTORS
SE-3001
2S8C381
2SC377
2SC 389
Cb3l .02
4
Qb3 2SC377
SL-20515
ye DDI-aINGO
Dbis ISI55/5
SEALED CIRCUIT ASSEMBLIES-PHANTOM VIEWS
i
CoS
kb.
50,100
Cb39.00
_
RBS
IK
ager
heed
VRbS
[OK
Dbi2
ool
Tp
Cb42_33 16V — i Ae
“ss
{
Cb45,04
Rb33
2.2K
Rb43
47K
ters aa te ibe
a “Gils
0b44 0; { 02
rosia70_
COO
Ka
BS
odd
aor
aiten
iY ee 3 a Qb6 Lb7 cb24 O24
g| @ in
r
I
!
36
,
oar
T
\
me
ae
eee
7
a
=
38
TT
Cb54.02
i
|
al
Rb37
22K
|
{
ue
:
16
Rb39
330
Cb23
0
-
4
Pa
ETC
|p
maze
22
yt
obs
@
os noes 7 amas 3 i]
—
Q
se
oon
O02
Lb3
e
4
=
eee
VY
lesen
Rb9 4.7K
55 O04
—_
Qbl
SESOOKW),
Qb2
SESOOKR),
Qb3
2SC377,Qb4
2SC378,
Qb5
2SA495(Y),
Qb6
2SC38KO),
Qb7
2SC377,
ICbI
SL-20575(8),
ICb2
SL-20575(R),Dbiwi4
INGO,
DbIS
ISIS55

Q@KENWOOD. | IF (UA1224K) SECTION |
PARTS DESCRIPTION LIST
Symbol No. Description Symbol No. Description Part No.
Part No. | ne
marks
Cb1, 2
Cb3, 4
Cb5
Cb6
Cb7,8
Cb9, 10
Cb11
Cbi2
Cb13
Cb14,
Cb16
Cb17
Cb18,
Cb20
Cb21
Cb22
Cb23 ~ 27
Cb28
Cb29
Cb30
Cb31,
Cb33
Cb34
Cb35
Cb36,
Cb38
Cb39
Cb40,
Cb42
Cb43
Cb44
LCb45
Cb46
Cb48,
Cb50,
Cb52
Cb53
Cb54
Cb55
Cb56
CAPACITORS
Ceramic
Polystyrene Film
Electrolytic Tubular
Ceramic
Polystyrene Film
Ceramic
Electrolytic Tubular
Ceramic
Polystyrene Film
15 Ceramic
Electrolytic Tubular
Ceramic
19 Ceramic
Electrolytic Tubular
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
32 Ceramic
Electrolytic Tubular
Ceramic
Electrolytic Tubular
37 Ceramic
Electrolytic Tubular
Ceramic
41 Ceramic
Electrolytic Tubular
Electrolytic Tubular
Ceramic
|Ceramic___
Ceramic
49 Ceramic
51 Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
-.0.04uF
0.02uF
1000pF
33uF
0.02uF
1000pF
0.02uF
4.7 uF
10pF
1000pF
200pF
10 uF
100pF
0.02uF
33uF
0.02uF
20pF
0.02uF
100pF
470pF
0.033uF
0.02uF
3.3 uF
0.02uF
47uF
0.02uF
10 pF
0.001 F
0.02uF
33yF
33 uF
0.02uF
+80%
+10%
6.3WV
+80%
+10%
+80%
25WV
+0.5pF
+10%
+10%
16WV
+10%
+80%
16WV
+80%
+10%
+80%
+10%
420%
20%
+80%
25WV
+80%
16WV
+80%
16WV
+80%
+80%
16WV
6.3WV
+80%
+80%
0,02yF +80%
0.02uF +80%
1pF +0.5pF
0.02nF +80%
20pF +10%
0.02uF +80%
0.04uF +80%
0.02uF +80%
CK94YG1E203Z
CQ08S1E102K03
CE04W1J330
CK94YG1E203Z
CQ08S1E102K03
CK94YG1E203Z
CEO4W1E4R7
CC94SL1H100D
CQ08S1E102K03
CC94SL1H201K
CE04W1C100
CC94SL1H101K
CK94YG1E203Z
CE04W1C330
CK94YG1E203Z
CC94SL1H200K
CK94Y G1E203Z
CC94SL1H101K
CK94YY2E471M
CK94YY2E332M
CK94YG1E203Z
CEO04W1E3R3NP
CK94YG1E203Z
CE04W1C470
CK94YG1E203Z
CE94Y G1E203Z
CK94YG1E1022
CK94YG1E203Z
CE04W1C330
CE04W1J330
CK94Y G1E203Z
CK94YG1E403Z
CK94YG1E 1052
CK94YG1E103Z
CC94SL1H010D
CK94Y G1E203Z
CC94SL1H200K
CK94Y G1E203Z
CK94YG1E403Z
CK94YG1E203Z
RESISTORS
Rbi
Rb2
Rb3
Rb4
Rb5
Rb6
Rb7
Rb8
Rb9
Rb11,
Rb13,
Rb15
Rb16
Rb17
Rb18
Rb19
Rb21
Rb22
Rb23
Rb24
Rb25
Rb26
Rb27
Rb28
Rb29
Rb30
Rb31
Rb33
lereulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
{nsulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
12 Insulated Carbon Film
14 Insulated Carbon Film
Insulated Carbon Film
tnsulated Carbon Film
Insulated Carbon Film
tnsulated Carbon Film
tnsulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
5.6k2 +5% or 10%
47k +5% or 10%
1kQ +5% or 10%
222. +5% or 10%
1kQ +5% or +10%
5.6kQ +5% or 10%
4702. +5% or 10%
47k2 +5% or 10%
4.7kQ +5% or 10%
2.2kQ +5% or $10%
10k2 +5% or 10%
4702. +5% or 10%
1002 +5% or t10%
472 +5% or +10%
10k2 +5% or 10%
2702 +5% or 10%
1kQ +5% or 10%
2.2k2, +5% or 10%
1.2k2 — £8% or £10%
56k +5% or +10%
5.6k2. +5% or 10%
100kQ +5% or ti0%
22kQ +5% or 10%
15kQ +5% or +10%
56k2 +5% or 10%
1kQ +5% or 10%
4702. +5% or 10%
2.2k2 +5% or 10%
PD14BY 2B562J
PD14BY 2B473J
PD14CY2B102J
PD14CY 2B220J
PD14BY 2B102J
PD14CY 2B562J
PD14BY 2B471J
PD14BY 2B473J
PD14BY 2E472K
PD14BY 2B222J
PD14BY 2B103J
PD14BY 2B471J
PD14BY 2B101J
PD14BY 2B4705
PD14CY2B103J
PD14CY 2B274J
PD14CY2B102J
PD14CY2B2225
PD14BY 2B122J
PD14CY 2B563J
PD14CY 2B562J
PD14BY 2B104J
PD14BY 2B223J
PD14BY 2B153J
PD14BY 2B563J
PD14BY2B102J
PD14BY 2B4713
PD14BY 2B222J
Rb34
Rb35
Rb36
Rb37
Rb38
Rb39
Rb40
Rb41
Rb42
Rb43, 44
Rb45
Rb46
Rb47
Rb49
Rb50
Rb52
+5% or t10%
+5% ort10%
+5% or t10%
+5% or 10%
+5% or £10%
+5% or 10%
+5% or £10%
+5% or £10%
£5% or t10%
+5% or 10%
45% or 10%
+5% or 10%
+5% or 10%
+5% or £10%
+5% or 10%
+5% or £10%
Insulated Carbon Film 56k
Insulated Carbon Film 1kQ
4.7kQ
22k2.
33k.
Insulated Carbon Film 3302
insulated Carbon Film = 1kQ
10kQ2
100kQ
22k2
3902
10kQ
Insulated Carbon Film 5.6k2
Insulated Carbon Film 222
Insulated Carbon Film 100Q
Insulated Carbon Film 1kQ
Insulated Carbon Film
Insulated Carbon Film
insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
PD14BY 2B563J
PD14BY 2B102J
PD14BY 2B4725
PD14BY 2B2235
PD14BY 2B333J
PD14BY 2E331K
PD14BY 2B102J
PD14BY2B103J
PD14BY2B104J
PD14BY 2B223J
PD14BY 2B391J
PD14CY2B103J
PD14CY 2B562J
PD14CY 2B220J
PD14BY2B101J
PD14BY 2B102J
IF TRANSFORMER/COIL
Choke Coil
FM IFT
FM IFT
AM IFT
AM IFT
AM IFT
AM IFT (MUTING)
FM IFT (DICS)
AM IFT
AM PF Coil
AM OSC Coil
Choke Coil
Ferri-tnductor (FL5H 151K)
Ceramic Filter
L20-010C
L02-104
L02-104
L01-88
L02-109
L01-88
L02-95
L02-64
101-89
L12-61
L11-70
L20-010C
L4019
Icb1
Icb2
Db1~ 14
Db15
TRANSISTOR/IC/DIODE
SE-3001-(W)
SE-3001-(R)
28C377
28C378
2SA495 (Y)
2SC381 (O)
28C377
SC-20575 (B)
SL-20575 (R)
1N60
181555
POTENTIOMETER
20kQ (B)
20k2 (B)
20kQ. (B)
100k2: (B)
10kQ (B)
iF OUT
FM METER
MUTING
FM METER
AM METER
R10-75
R10-115
Ri0-75
R10-91
R1i0-114
MISCELLANEOUS
P. C. Board
Shielding Board
© 1970-6 PRINTED IN JAPAN (G)
$23-327
F10-0002-04

KR-4140 SCHEMAT
LEFT INPUT
RIGHT INPUT
RF(xo1-00 25-10)
Qa; 2SKIS-YorGR Qazi 2SKI9~-YorGRorBL
coz or Qa!
t
|
+H 4CT02 10P
(<)
Pp
Cod
ane
THa1 SDT-
FAL
+
FM RF
any
LouLes & Vs D
3
. 8
et i ‘
8
8
b
vi
7
a
$ FM MIX
¢
x]
HR
ip
1a
RoG 470
HE
CoB OF
SaaS a
“ ry
=e
to}
E
acc EE)
Qas
2SC78SR
re
Tr ar
14V
a
AM - FM IF (xo2-0020-10) |
cb3l 02
“Qbs 2SC377
aaa f 02 Rb25 5.6K
22.gmA
>
phate
ITT =a
BL Sue
Hi
“Teor ipy|4S6KHe
rine]
AUX a
PHOND2 ©
PHONO! @
4
9 O,5
. é
AUX ©
PLAY [
REC ©
—-¥ AZ
—56
Rel? 56K om
eg 10 50
4—__—
oe
A on
REC ©
PLaY®
sEPA
on ond
TAPE PLAY
+
ci2.068
Ss TAPE MON. SOURCE
RU2+1OK
S3 LOUDNESS
R2I2 10K
Re
alae oy
Rea3|
s0K HI
t FILTER
Ba
C4
Note:
voltages are shown at the right.
We
reserve
the
right
to
make
modifications
in
this
model
in
accordance
w
Se SPEAKERS
AN
Reli2 2.7%
Qet2 w
25C458LG© | si pre—MAIN
Qe 55:
32248 8LGBaO SEPARATE SWITCH
Qei7.19
2SCTISEoF
3215 65..0 Qez0 2SC97!
The
schematic
diagram
above
is
for
the
KR-4140
receivers
made
for
operatior
areas.
Revised
power
transformer
circuits
for
those
receivers
made
to
ac.
Qen-42SC9B4@«E) NP
Qeis 2SC734 Onr¥
reas
Qeza2S

DIAGRAM
|
[5
toxHz
OG!
3
Des
Reid,
P20
ba
!
Wed
a|
Bese
I
)
baysL
Fit
=|
ace
Se
bec
of
«Lh
li
i
Ger
[Delos
|
arty
SEGTIBL
wes
|
Toe
ST
EF
Laois
i’)
)
het
ae
tr
Z}io’|
SS
%
eid
Vile
ae
=
cle
POWER
TRANSFORMER
8
Sicrate
:
_
HEE
i(||=
ARRANGEMENTS
|
ies
STR
|
i
|
eee
si
AEE:
!
:
Halll:
|
R
Qc:
2SC45810)|
|
rs
ee
ae:
C6
Ss
Ds
Re2l_
33K
|
&
Co-15V,
Dei-s
INGO
é
ace
OAV
®
6
a
| | I
| cay
| Re:
22
| Re27 | risk | 8
I |
Re31_ 33
| | | i | REET
=
@Fer AC 110-120V/220-240V Sets
301.01
SWITCHED |"
TUNING METER
Dl
c
ba
mm
g
ns
x
x
@
°
Ate
Ss
Olrint-
OF
OQ}
4
Ny
(Se
ora
Qt
= 1Q—-
240V 120V
K
Sa-tr
10 0
or °
7
Asi
GeS0_10. 28 R272 330
AW
ners
RI72 330
G88 az. 3
pee spa
:
Reg2 {50
4.7K
#2/A).
xO
a] 8 32
tT |
od
f
EE
R17]
Rez tk | |
FE
ee
é
vi
R273
56
THe 5T-31 $9
FIOk KR-4140
\C 110-120V power source
different power source
echnical developments.
_

ee
Se
ee
ee
nk
tee
eee
Re
ee
NS
EN
ny
ale
ese
oe
nn
ae
earner
rn
See
Lee
e
rs
@KENWooD REISER
(KR-5150)(KR-4140)
SCHEMATIC DIAGRAM
+
Rel3 220K 7mA
Qce 2SC734(Y)
Deiws INGO
R
c2l, 33K ~K)
if
o.
c3
|
:
§
De3
lrg
10K
Cele
Rel?
|
|
88
068
47K
N
|
2|8
|
[cet
|
10
25V
| 5 10K
|
3
a
=o
ge
|
1f
.
€|
9
Le3
2
Ccl3
Relig
x
jz)
sb
3
aE
;
&
al
od
—
3
Ree
"ox|
O68
47K
=
|
9
oes|—
97
8
e
67kHz
C6
y
|
e
OTS
gle
Rci6
220K
«
l
Clo
.
t
+
|
|
SNK
19
Lye
olx
|
viel
es
236
Sete
STEREO
| BEACON { !90K | « « DEFEAT
SET]
4°
Qe3
5
l
a
mm
STEREO
|
|
8
8?
cua
(a
|
.
z
|
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CASE
COLLECTOR

Q@KENWOOD.
PARTS DESCRIPTION LIST
Symbol No.
MPX (X04-0010-10) SECTION
Description
Part No. Remarks
CAPACITOR
Cc1
Cc2
Cc3
Cc4
Cc5
Cc6
Cc7
Cc8,9
Cc10, 11
Cc12, 13
Cc14, 15
Cc16
Electrolytic Tubular
Polyester
Polyester
Polyester
Ceramic
Polyester
Electrolytic Tubular
Mica
Ceramic
Solid Aluminum
Mylar
Electrolytic Tubular
10uF
5000p
6800p
470pF
25WV
F +5%
F +5%
15%
0.001 uF +10%
2500pF +5%
10uF
100pF
470pF
25WV
15%
+10%
0.068 uF +20%
0.0039uF +5%
1uF
50WV
CEO4W1E100
CQ08S2B502J
CQ08S2B682J
CQ08S2B471J
CK94YPTH102K
CQ08S2B252J
CE04W1B100
CM93F 1H101J
CK94YP1H471K
CAO6E1E RO68M
CQ93M1H392J
CE04W1H010
RESISTOR
Rect, 2
Rc3
Rc4
Rc5
Rc6
Re7
Rc8
Rc9 ~ 12
Rc13 ~ 16
Rc17 ~ 20
Re21
Rce22
Re23
Re24
Re25
Rce26
Rce27
Rce28
Rce29
Rc30
Rce31
Rc32
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insualted Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
Insulated Carbon Film
100k, +10% 1/4W
4.7kQ +10% 1/4W
562. +10% 1/4W
15kQ £10% 1/4W
100k& £10% 1/4w
2202. +10% 1/4W
4.7k2 +10% 1/4W
10k2 +5% 1/4W
220k2 +5% 1/4w
471kQ +5% 1/4W
33kQ +10% 1/4W
4.7kQ +10% 1/4W
6.8k2 +10% 1/4W
562 +10% 1/4W
2202 +10% 1/4W
33kQ +10% 1/4W
10k2 +5% 1/4W
4.7kQ £10% 1/4W
470k2 +10% 1/4W
33k2. £10% 1/4W
332 £10% 1/4w
10k2 15% 1/4W
TRANSISTOR/DIODE
PD14BY 2E 104K
PD14BY2E472K
PD14BY 2E560K
PD14BY 2E 153K
PD14BY 2E 104K
PD14BY 2E221K
PD14BY 2E472K
PD14BY 2E103J
PD14BY 2E224J
PD14BY 2E473J
PD14BY 2E 333K
PD14BY 2E472K
PD14BY 2E682K
PD14BY 2E560K
PD14BY 2E221K
PD14BY 2E 333K
PD14BY 2E 103K
PD14BY 2E472K
PD14BY 2E474K
PD14BY 2E 333K
PD14BY 2E330K
PD14BY 2E 103J
Qc1
Qc2 ~5
Qc6
Dc1 ~6
2SC458 (D)
CS90714 (C)
2S8C734 (Y)
1N60
COIL/POTENTIOMETER
Le1
Le2
Lce3
Lc4
VRcl
19kHz TUNING COIL
Ferri-Inductor (FLQH-103J)
67kHz TUNING COIL
38kHz TUNING COIL
100k2 (B) BEACON SET
L17-49
L33-0117-05
17-44
L35-0038-05
R10-65
MISCELLANEOUS
P C Board
J25-0435-03
© 1970-6 PRINTED IN JAPAN (G)