Kenwood KCA-S220A - Car Audio Switcher User manual

© 2006-6 CREATED IN JAPAN
B53-0433-00 (N)0
SWITCHING UNIT
KCA-S220A
SERVICE MANUAL
ON
AUX
SWITCHAUXIN
OFFRL
TOHEADUNIT TOUNIT 1 TOUNIT 2
Metallic cabinet
(A01-4416-03)
Cord with plug
(E30-4276-15) Screw set (N99-1797-08) Magic tape
(Not supplied)
2m
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.

KCA-S220A
2
BLOCK DIAGRAM
REQC
GND
AGND
BU+14V
CH MUTE
CHCON0
REQH
CH RST
DATAC
DATAH
HCLK
Rch
Lch
Lch
CH RST
CHCON0
GND
AGND
CH MUTE
BU+14V
REQH
REQC
DATAC
DATAH
HCLK
Rch
CH MUTE
CHCON
BU+14V
GND
AGND
CH RST
REQH
REQC
DATAC
DATAH
HCLK
Lch
Rch
CHANGER 1
CHANGER 2
ELECTRIC SW
IC3 LOGIC VDD
X'TAL RESET
VDD
VDD
AUX SW
u-COM
IC1
ELECTRIC SW
IC4
LOGIC VDDQ11,12,14
AUX IN
B.U. DET 8V DET 4V DET
H/U
5V AVR
VDD Q15
8V REG
IC6
VDD
LOGIC
Lch
Rch
COMPONENTS DESCRIPTION
●ELECTRIC UNIT
Ref. No. Name Function
IC1 µ-com For product control
IC2 Reset IC For when the µ-com voltage 5V goes down to 3.7V or less, monitors the power supply voltage to prevent
the µ-com malfunctioning.
IC3,4 Analog switch Receive the control signal from the µ-com and switch the changer 1, changer 2, and RCA sound input.
Around Q15 Power supply circuit for the µ-com power supply 5V
IC6 Regulator IC IC for analog switch IC power supply (8V)

KCA-S220A
3
EDCBA
1
2
3
4
5
6
7
PC BOARD (FOIL SIDE VIEW)
D36
CN2
CN4 SH1
LR AUX
TO UNIT 2 TO UNIT 1 TO HEAD UNIT
AUX IN
CN1 CN3
D29
D31
D30
D12
D13
D11
D5
D24
D23
D32
D22
D4
D5
D3
D1
D2
D10
Q12
D34
D19
D15
D37
D35 D9 D8 D7
D18
D17
D33
D27
D28
D16
D38
Q6
Q2
Q3
Q14
Q13
Q4
Q15
Q5
Q9
D26 D25
Q1
Q10 IC6
IC2
Q7
D21
D20
Q11
Q8
IC3 IC4
IC1
J1
J12
J8
J46
J50
J43
X1
J44
J2
J6
REQH
RST
DATAH
CLK
DATAC
MUTE
CHCON
Rch
Lch
AGND2
Rch
AGND1
Lch
RESET
SW1
SW2
BU+14V
5V
GND
CHCON
Rch
Lch
REQC
REQH
MUTE
CHCON
DATAH
CLK
DATAC
REQC
RST
MUTE
REQH
Lch Rch
A.GND
AUX.SW
REQC
J7
J10
J11
J14
J15
J17
J19
J23
J24 J25
J26
J27 J28 J29 J30
J31
J52
J21
J48
J42
J32
J38
J37
J41
J3 J54
C4
C3
C1
C2
C7
C5
C6
C8
C18
C19
C17
C21
C16
R91 R90 R88 R87
R37
J53
J13
J51
J9
J16
J18
J20
J22
J47
J45
ON OFF
J39
J40
J36
J55
J33
J4 J5
R72
R83
R78
R77
R38 R31
R85
R5
14
58
912
13
14
58
912
13
14
58
912
13 R9
R6
R4
R95
R33
C9
R52
C13
C15
C14
C10
R48
R49
R50
R40
R39
R43
R44
R45
C11 R58
R54 R60
R59
R84
R74
R71
R70 R25
R29
R69
R89
R86
R68
R94
R93
R73
R47
C20
R12 R18 R20 R17 R42
R57
R46
R53
R32
R80
R79
R2
R61 R62 R63 R64
R1
R3
R7
R10
R8
R92 C12
IOG
GOI
R55
R36 R35 R34
R16
R67
R23
R22
R30
R28
R27
R21
R26 R19
R24
R14 R11
R13
R15
R76
R75
R81
R82
JC10
JC1
JC9
JC7
JC8
JC5
JC4
JC6
JC2
JC3
8
7
1
14 8
7
1
14
41
20 21
40
80
61
1
60
BE
BE
BE
BE
EB
EB
EB EB
EB
EB
EB
EB
BE
BE
BE
ELECTRIC UNIT
Refer to the schematic diagram for the values of resistors and capacitors.
ELECTRIC UNIT
Ref.No. Address
IC1 2D
IC2 2D
IC3 2A
IC4 2B
IC6 2E
Q1 2E
Q2 2C
Q3 2C
Q4 2D
Q5 2D
Ref.No. Address
Q6 2A
Q7 2E
Q8 2B
Q9 3D
Q10 2E
Q11 3A
Q12 3A
Q13 2B
Q14 2B
Q15 3D

KCA-S220A
4
ABCDE
1
2
3
4
5
6
7
CN1
D5
D6
D4
D8
D9
CN2
D7
D30 D38D31
Q6
Q5
Q11
ELECTRIC UNIT
Q12
D12D13
D11 D10
D28
D27
D22
Q3Q2
Q4
SH1 AUX
SW
AUX
GND LINE
SIGNAL LINE
B LINE
to
CH1
CH2
to
RESET IC
u-COM
ANALOGUE SW
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
61
62
63
64
65
66
67
68 69
70
71
72
73
74
75
76
77
78 79
80
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
NC NC NC NC NC NC NC
VSS
NC NC NC NC NC NC NC NC NC NC
RELAY2
RELAY1
CHCON02
CHCON01
HCLK2
DATAH2
DATAC2
REQH2
REQC0
HCLK0
DATAC0
DATAH0
HCLK1
DATAH1
DATAC1
AVREF1
REQH1
REMOSW
AVSS
NC
NC
NC
REQH0 BUDET AUX.SW REQC2 REQC1 CHCON1 COMMSW VDD X2 X1 IC NC CHCON2 AVDD AVREF0 NC NC NC NC NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
RESET
87 GND
6
4
5
3
9
11
10
1
213
12
14
VDD
SWC
SWA
B2
SWB D2
SWD
D1
C2
C1
A2
B1
A1
10
12
11
37
8
4
6
2
5
19
13
BU+14V
AGND1
Rch1
Lch1
HCLK1
CH RST1
DATAH1
CHCON01
DATAC1
CH MUTE1
REQC1
REQH1
GND
R11 100
R13 100
R17 100
R16 100
R14 100
R18 100
R20 100
R12 100
R19 100
R15 100
6
D15
8
9
D18
10
19
R1
L1
BU+14V
CH MUTE2
CHCON02
DATAC2
48
3
2
7
6
12
Lch2
AGND2
Rch2
11
10 13
DATAH2
CH RST2
HCLK2
159REQC2
REQH2
GND
R26 100
R28 100
R24 100
R22 100
R29 100
R27 100
R30 100
D17
20
17
16
18
R23 100
R25 100
R21 100
D16
15
R88
100K
100K
R91
R90
4.7K
100K
R72
1K
R71
10u16
+
C1
10u16
+
C2
220K
R86 100K
R68
100K
R67
100K
R69
100K
R70
220K
R89
10u16
+
C3
4.7K
R87
C4 10u16
22
21
21
22
R1
L1
R2
L2
R2
L2
19MHz
C15
33P
C14
33P
X1
R43
22K
R44
5600P
C11
10K
R45
2.2K
R46
1K
R42
R40
1K
R50
22K
R48
1000P
C10
1K
R49
47K
R47
47K 1K
R37 100K R36 100K
R38 1K
R35 100K
62
61
64
65
65
64
100
R39
R34 100K R33 100K
0.1
C13
10K
R32
R31
100K
4700P
C12
7INOUT
GND
5V
BU+14V
8V
2
3
1
+
IC1
IC3
IC2
1
1
4
2
2
2
3
3
IC1 : 780058GC653A
IC2 : S-80837AN-D1-T
IC3,4 : TC4066BFT(N)
IC6 : HA178L08UA
Q1,4-6,8 : DTC124EKA
Q2,3 : 2SC2412K
Q7 : DTC143EKA
Q9 : DTC144TKA-T
Q10 : DTA114EKA
Q11,12,14 : 2SD2114K
Q13 : DTA124EK
Q15 : 2SD1782K
D1-13,23-26 : MA3056WA
D15-19,27,28 : 1SS355
D20 : DA204K
D21,30-32 : MA3056-M
D22 : MA3062-L
D29 : HZS6LA3
D33-35,38 : HZU6.2B1
D36 : HZS6B3
D37 : HZU11B1-T
ELECTRIC UNIT (1/2)

KCA-S220A
5
JIHGF
1
2
3
4
5
6
7
D2
D3
D1
CN3
D36
D37
Q8
Q7
D28
D27
CN4
R ch
L ch
D23
D24
Q14
Q13
D32
D34 Q10
Q9
D26
D25
D15
D16
D35
D19
D18
D17
D33
Q15
D29
D21
Q1
D20
H.U
to
AUX
to
ANALOGUE SW
REGULATOR
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
N
02
N
01
L
K2
H2
C
2
Q
H2
Q
C0
L
K0
C
0
H0
L
K1
A
H1
A
C1
E
F1
Q
H1
S
W
V
SS
NC
NC
NC
4
3
8
7
12
11
2
1
6
5
10
13
9
R9 100
R5 100
11
R7 100
12
14
CH MUTE
REQH0
GND
REQC0
CH RST
HCLK0
DATAC0
DATAH0
CHCON
Rch0
Lch0
BU+14V
AGND
SWB
SWC
GND
A2
5
6
7
3
4B1
B2
2
1A1 SWA
C1
10
C2
D1
8
9
D2
SWD 12
11
VDD 13
14
R75
100K
100K
R72
1K
R71
R74
100K 100K
R77
R80
10K
100K
R78
10K
R79
100K
R76
R73
10u16
C8
+
10u16
C7
+
100
R83
10u16
+
C6
10u16
+
C5
R82
100K
R81
100K
100
R84
R93
220K
R94
4.7K
INOUT
GND
470
R92
0.01
C20
0.1u50
+
C16
47u16
C21
+
R60 100
R58 100
R59 100
R57 100 6
8
9
10
R61 100 19
R85 100K
15
16
17
18
R62 100 20
11
12
13
14
100K
R63
100K
R64
100K
R55
100K
R54
100K
R53
13
D16
D17
100
R8
100
R4
100
R2
D15
D18
100
R10
7
61
100u16
C19
+
10u16
C18
+
22K
R95
100u16
C17
+
18K
R52
62
0.1
C9
2
.2K
R46
100
R3
100
R1
100
R6
5V
BU+14V
8V
1K
12
3
IC4
IC6
KCA-S220A
1
4
4
3
3
CAUTION : For continued safety, replace safety
critical components only with manufacturer’s
recommended parts (refer to parts list).
Indicates safety critical components. To re-
duce the risk of electric shock, leakage-current
or resistance measurements shall be carried out
(exposed parts are acceptably insulated from
the supply circuit) before the appliance is re-
turned to the customer.
•DC voltages are as measured with a high
impedancevoltmeter.Valuesmayvaryslightly
due to variations between individual instru-
ments or/and units.
ELECTRIC UNIT (2/2)
DTA114EK
DTA124EK
DTC124EK
2SC2412K
2SD2114K
DTC143EKA
DA204K

KCA-S220A
6Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW
3
2
1
BA
B
D
D
D
D
713
706
A
A
8
4
1
705
702
C
x2
CN2
CN4
SH1
CN1
CN3
A
B
C
D
φ3x6
φ3x8
φ3x5
φ3x6
: N09-6434-08
: N09-6438-08
: N86-3005-48
: N09-6437-08

KCA-S220A
7
Indicates safety critical components.
✽New parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
Ref. No. A
d
dN
e
wParts No. Description Desti-
nation Ref. No. A
d
dN
e
wParts No. Description Desti-
nation
E : Europe K: North America M: Other Areas W :Without Europe
PARTS LIST
11B ✽ A01-4416-03 METALLIC CABINET
-
✽ B64-3452-00 INSTRUCTION MANUAL
(ENG.FRE.GER.DUT.ITA.SPA.POR.)
41A ✽ E30-4276-15 CORD WITH PLUG
-H12-2590-14 PACKING FIXTURE
-H25-0328-04 PROTECTION BAG
-
✽ H54-3869-08 ITEM CARTON CASE
81A
✽ N99-1797-08 SCREW SET
A3B
✽ N09-6434-08 TAPPING SCREW (3X6)
B1B
✽ N09-6438-08 BINDING HEAD TAPTITE SCREW
C2BN86-3005-48 BINDING HEAD TAPTITE SCREW
D1B ✽ N09-6437-08 BINDING HEAD TAPTITE SCREW
C1-8 ✽ C90-5252-18 ELECTRO 10UF 16WV
C9 CK73FF1H104Z CHIP C 0.10UF Z
C10 CK73FB1H102K CHIP C 1000PF K
C11 CK73FB1H562K CHIP C 5600PF K
C12 CK73FB1H472K CHIP C 4700PF K
C13 CK73FF1H104Z CHIP C 0.10UF Z
C14,15 CC73FCH1H330J CHIP C 33PF J
C16
✽ C90-6821-08 ELECTRO 0.1UF 50WV
C17
✽ C90-5253-18 ELECTRO 100UF 15WV
C18
✽ C90-5252-18 ELECTRO 10UF 16WV
C19
✽ C90-5253-18 ELECTRO 100UF 15WV
C20 CK73FB1H103K CHIP C 0.010UF K
C21
✽ C90-5260-18 ELECTRO 47UF 15WV
CN1-3
✽ E56-0832-18 CYLINDRICAL RECEPTACLE
CN4
✽ E63-0859-18 PIN JACK
X1
✽ L77-2717-18 CRYSTAL RESONATOR
JC1-10 R92-2052-05 CHIP R 0 OHM J 1/10W
R1-30 RK73FB2B101J CHIP R 100 J 1/8W
R31 RK73FB2B104J CHIP R 100K J 1/8W
R32 RK73FB2B103J CHIP R 10K J 1/8W
R33-36 RK73FB2B104J CHIP R 100K J 1/8W
R37 RD14BB2C104J RD 100K J 1/6W
R38 RK73FB2B102J CHIP R 1.0K J 1/8W
R39 RK73FB2B101J CHIP R 100 J 1/8W
R40 RK73FB2B102J CHIP R 1.0K J 1/8W
R42 RK73FB2B102J CHIP R 1.0K J 1/8W
R43 RK73FB2B223J CHIP R 22K J 1/8W
R44 RK73FB2B102J CHIP R 1.0K J 1/8W
R45 RK73FB2B103J CHIP R 10K J 1/8W
R46 RK73FB2B222J CHIP R 2.2K J 1/8W
R47,48 RK73FB2B473J CHIP R 47K J 1/8W
R49 RK73FB2B102J CHIP R 1.0K J 1/8W
R50 RK73FB2B223J CHIP R 22K J 1/8W
R52 RK73FB2B183J CHIP R 18K J 1/8W
R53-55 RK73FB2B104J CHIP R 100K J 1/8W
R57-62 RK73FB2B101J CHIP R 100 J 1/8W
R63,64 RK73FB2B104J CHIP R 100K J 1/8W
R67 RK73FB2B104J CHIP R 100K J 1/8W
R69,70 RK73FB2B104J CHIP R 100K J 1/8W
R71 RK73FB2B102J CHIP R 1.0K J 1/8W
R72 RK73FB2B104J CHIP R 100K J 1/8W
R73 RK73FB2B102J CHIP R 1.0K J 1/8W
R74-78 RK73FB2B104J CHIP R 100K J 1/8W
R79,80 RK73FB2B103J CHIP R 10K J 1/8W
R81,82 RK73FB2B104J CHIP R 100K J 1/8W
R83,84 RK73FB2B101J CHIP R 100 J 1/8W
R85 RK73FB2B104J CHIP R 100K J 1/8W
R86 RK73FB2B224J CHIP R 220K J 1/8W
R87 RD14BB2C472J RD 4.7K J 1/6W
R88 RD14BB2C104J RD 100K J 1/6W
R89 RK73FB2B224J CHIP R 220K J 1/8W
R90 RD14BB2C472J RD 4.7K J 1/6W
R91 RD14BB2C104J RD 100K J 1/6W
R92 RK73FB2B471J CHIP R 470 J 1/8W
R92 RK73FB2B472J CHIP R 4.7K J 1/8W
R93 RK73FB2B224J CHIP R 220K J 1/8W
R95 RK73FB2B223J CHIP R 22K J 1/8W
SH1
✽ S62-0864-18 SLIDE SWITCH
D1-13 MA3056WA ZENER DIODE
D15-19 1SS355 DIODE
D20 DA204K DIODE
D21 MA3056-M ZENER DIODE
D22 MA3062-L ZENER DIODE
D23-26 MA3056WA ZENER DIODE
D27,28 1SS355 DIODE
D29 HZS6LA3 ZENER DIODE
D30-32 MA3056-M ZENER DIODE
D33-35
✽ HZU6.2B1 ZENER DIODE
D36 HZS6B3 ZENER DIODE
D37
✽ HZU11B1-T ZENER DIODE
D38
✽ HZU6.2B1 ZENER DIODE
IC1
✽ 780058GC653A MICROCONTROLLER IC
IC2
✽ S-80837AN-D1-T IC
IC3,4 TC4066BFT(N) MOS-IC
IC6 HA178L08UA ANALOGUE IC
Q1 DTC124EK DIGITAL TRANSISTOR
Q2,3 2SC2412K TRANSISTOR
Q4-6 DTC124EK DIGITAL TRANSISTOR
Q7 DTC143EKA DIGITAL TRANSISTOR
Q8 DTC124EK DIGITAL TRANSISTOR
Q9
✽ DTC144TKA-T DIGITAL TRANSISTOR
Q10 DTA114EK DIGITAL TRANSISTOR
Q11,12 2SD2114K TRANSISTOR
Q13 DTA124EK DIGITAL TRANSISTOR
Q14 2SD2114K TRANSISTOR
Q15 2SD1782K TRANSISTOR
KCA-S220A
ELECTRIC UNIT

KCA-S220A
MEMO