© 2004-7 PRINTED IN JAPAN
B51-8698-00 (N) 1109
HORN ALERT / P.A. RELAY UNIT
KAP-2
SERVICE MANUAL
Crimp terminal
(E23-1257-05) x 8
Packing
(G53-1643-04)
Insulating cover
(F29-0481-05)
Lead wire with connector
(E37-1114-05)
Lead wire with connector
(E37-1113-05)
Relay unit
(X41-3670-20)
Square plug
(E59-0419-05)
Brazier head taptite screw
(N87-2606-48)
E23-1257-05
CRIMP TERMINAL
E37-1113-05
LEAD WIRE WITH CONNECTOR
E37-1114-05
LEAD WIRE WITH CONNECTOR
E59-0419-05
SQUARE PLUG
F29-0481-05
INSULATING COVER
G53-1643-04
PACKING
N87-2606-48
BRAZIER HEAD TAPTITE SCREW
PARTS LIST
C1-5
CK73FB1H102K
CHIP C
1000PF
K
C7,8
CK73FB1E103K
CHIP C
0.010UF
K
E18-0254-05
SOCKET
CN1
E40-6375-05
PIN ASSY
CN2
E40-6394-05
PIN ASSY
CN3
E40-6393-05
PIN ASSY
R3,4
R92-0670-05
CHIP R
0 OHM
K1,2
S76-0451-05
RELAY
D1,2
1SS355
DIODE
Q1,2
DTD114EK
DIGITAL TRANSISTOR
New
parts
Parts No.
Description
Ref.
No.
KAP-2
New
parts
Parts No.
Description
Ref.
No.
RELAY UNIT (X41-3670-20)
: New parts
KAP-2 (Y60-4040-20)
KAP-2
2
Components Description
Relay unit (X41-3670-20)
Ref. No.
Part name
Description
Q1,2
Transistor
Switching
D1,2
Diode
Reverse electromotive force protection
Terminal Function
Relay unit (X41-3670-20)
Pin No. Name I/O
Description
CN1
1
GND
-
Ground.
2
HR2
O
Horn alert signal output 2.
3NC-
Non-connection.
4
SPO
I
Speaker input.
5
SPI
O
Speaker output.
6
ESP
I
Speaker input.
CN2
1
HR2
O
Horn alert signal output 2.
2
GND
-
Ground.
3
OSP
O
External speaker output (PA).
4
ESP
O
External speaker output.
5
GND
-
Ground.
6
HR1
I
Horn alert signal input 1.
CN3
1
GND
-
Ground.
2
HOR
I
Control signal input of Horn Alert function.
3PA
I
Control signal input of Public Address function.
4
SPO
O
Speaker output.
5
SPI
I
Speaker input.
6SBI
Power input of switched power supply.
Cable (E37-1113-05) 6-pin Connector
Circuit Description
Public Address (PA) function
The PA output switching relay is controlled by turning the
PA function on and off. When the PA is activated, the PA
output flows through the following path.
The audio signal input from the microphone passes
through the filter, amplifier and other circuits of the TX-RX
unit (B/3) and goes to pin 5 (SPI) of CN3 of the relay unit. The
audio signal passes through the relay (K2) and is output to pin
3 (OSP) of CN2.
Horn Alert (HA) function
The relay unit can be controlled by turning the HA function
on and off and by using a signaling decode output. The maxi-
mum current of HA is 2A.
There are two Horn Alert settings: HA1 (Default) and HA2.
HA2 can be set by changing the short pin of CN1.
CN1 Connect
Set Up
1-2
HA1
2-3
HA2
External Speaker (KES-5)
External speaker KES-5 can be installed for KAP-2. If KES-
5 is installed, it can be set by changing the CN1 short pin from
pins 4 and 5 (INT SP) to pins 5 and 6 (EXT SP).
CN1 Connect
Set Up
4-5
INT. SP
5-6
EXT. SP
CIRCUIT DESCRIPTION / COMPONENTS DESCRIPTION / TERMINAL FUNCTION
HR1
HR2
HA1 (Default)
HR1
HR2
HA2
CN1 pin 1-2
connect
CN1 pin 2-3
connect
Pin No.
Color
Name
1
Red
HR2
2
Blue
GND
3
Yellow
OSP
4
Green
ESP
5
Brown
GND
6
Black
HR1
3
2
1
6
5
4
KAP-2
3
C1
1000p
C2
1000p
C3
1000p
C4
1000p
C5
1000p
C7 0.01u
C8 0.01u
R3
0
R4
0
Q1
DTD114EK
K1
S76-0451-05
K2
S76-0451-05
CN1
E40-6375-05
1
GND
2
HR2
3
NC
4
SPO
5
SPI
6
ESP
Q2
DTD114EK
CN3
E40-6393-05
1
GND
2
HOR
3
PA
4
SPO
5
SPI
6
SB
CN2
E40-6394-05
1
HR2
2
GND
3
OSP
4
ESP
5
GND
6
HR1
D1
1SS355
D2
1SS355
+
4-5
5-6
PA
LO
HI
LO
HI
SPI-SPO
SPI-OSP
SPI-ESP
SPI-OSP
AF
LO
HI
CN1
CONNECT
CN1
CONNECT
HOR
2-3
LO
HI
1-2
HR1
HR1-Open
HR1-GND
HR1-Open
HR1-HR2
K1
K2
GND
HR2
NC
SPO
SPI
ESP
HR2
GND
OSP
ESP
GND
HR1
GND
HOR
PA
SPO
SPI
SB
CN1
CN2
CN3
C1
C2
C3
C4
C5
C7
C8
D1
D2
Q1
Q2
R3
R4
1
6
1
6
1
6
J72-0922-09
J72-0922-09
Component side
Foil side
Layer 1
Layer 2
Component side
Foil side
Layer 1
Layer 2
RELAY UNIT (X41-3670-20)
Component side view (J72-0922-09)
RELAY UNIT (X41-3670-20)
Foil side view (J72-0922-09)
PC BOARD / SCHEMATIC DIAGRAM
PC Board
Schematic Diagram
RELAY UNIT (X41-3670-20)
KAP-2
KENWOOD CORPORATION
2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan
KENWOOD U.S.A. CORPORATION
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
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Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
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13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113 Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS SINGAPORE PTE LTD.
1 Genting Lane #07-00 Kenwood Building, Singapore 349544