Kenwood KRC-28YG User manual

© 1999-11 PRINTED IN JAPAN
B51-7546-00 (N)1580
CASSETTE RECEIVER
SERVICE MANUAL
KRC-28YG/YA
MECHANISM EXTENSION CORD
W05-0477-00 (7P)
W05-0609-00 (10P)
SRC
PWR
OFF
LOUD
EJECT
AME ADJ
A.ADJ
MONO
CLK
B.S REP T.CALL
KRC-28
40W 4
X
AUTO
PANEL ASSY
(A64-1909-02)
FRONT GLASS
(B10-3140-01) ESCUTCHEON
(B07-2181-02)
CASSETTE LID
(A53-1638-13)
DC CORD
(E30-4790-05)
ANTENNA ADAPTOR
(T90-0523-05)
LEVER
(D10-3031-04)x2
MOUNTING HARDWARE ASSY
(J21-9491-03)
PLASTIC CABINET ASSY
(A02-1486-13)

KRC-28YG/YA
2
BLOCK DIAGRAM
A1
SYSTEM u-COM
IC1
DSI
KEY
PANEL
RST SW
PAN 5V
B.U. 5V
MUTE
ACC DET
B.U. DET
ILLUMI AVR
MUTE DRIVER
PRE MUTE
POWER IC
IC6
EQ AMP
E-VOL
4ch
SP OUT
WITH
LCD DRIVER
LCD
MAINSUB
IC5 ON/OFF
IC2
IC4
SVR SW
ANT-CON
P.ON 5V
PRE OUT
TEL-MUTE
ANT-CON
P-CONT
ACC
B.U.
KEY MATRIX
MM
Q201
IC7
Q121
Q87-89
Q80,81
Q101
Q118
Q94-96
Q116,117
J5/6
J2
Q41-44
Q104
IC1
Q105
J1
ANT
FM ANT
AM ANT
AUDIO OUT
PLL
S METERS-METER
PLL DATA
SUB+
SUB-
ACC
B.U.
AMP MUTE
SCK
PWR STBY
SDA
FM +B
AM +B
RST
PANEL ON/OFF
LCD CLK
LCD CE
LCD DATA OUT
LCD DATA IN
DSI
FWD/REV
T MODE
PACK IN
MOTOR
OUT
Rch
COM
Lch TAPE
L/R
MPX
AM
OUT RR
OUT LR
OUT RF
LEVEL
SCK
SDA
OUT LF
TAPE L/R
STBY
MUTE
Rch
Lch
PACK
T-END
STBY
MODE
FWD
REV
B.U. 5V
COM+B
B.U. 14V
S MUTE
168mV
162mV
E:190mV
KM:360mV (AM)
(FM)
E:1100mV
KM:1600mV
(TAPE)1708mV
(FM) (CD-CH)3635mV
615mV
830mV
(AM)
780mV
570mV
(CD-CH)3495mV
(AM)(FM)
KM:1500mV
E:1060mV
(TAPE)1642mV
5
10
IN
HD1
FM+B
AM+B
COM+B
B.U. 5V
PLL CLK
SUB
MOTOR
MP IN
SVR
PHONE
ILL ON
B.U. 5V
P.ON 5V
REMOTE
341mV
SVR
Ref.102 Ref.103
Ref.95 Ref.105
Ref.94
M2 M1
8V AVR
Q84,85
COM+B
FM+B
AM+B
Q93
Q92
P-CON

KRC-28YG/YA
(X14-) IC1 : SYSTEM u-COM
PORT NAME I/O FUNCTION
1 XIN I Clock input
2 TEST 2 - GND
3 LCD DATA IN I LCD driver data input
4 LCD DATA OUT O LCD driver data output
5 LCD CLK O LCD driver clock output
6 STBY I Tape stand-by SW
7 T END I Tape end SW
8 SDA 2 I/O Data line to E-VOL.
9 SCL 2 O Clock line to E-VOL.
10 REQ H O Changer request output
11 DATA C I Changer data input
12 DATA H O Changer data output
13 CH CLK I Changer clock input
14 REQ C I Changer request input
15 CH CON O Changer control
16 LCD CE O LCD driver Chip Enable output
17 AM+B O AM power supply control
18 FM+B O FM power supply control
19 MUTE O Mute output for audio circuit
20 ILLUMI O Illumination on
21 AMP STBY O Stand-by output to power amp
22 SVR O SVR discharge circuit control
23 P.CON O Power control
24 ANT CONT O Tuner ANT control
25 SUB+ O Sub motor+output
26 SUB- O Sub motor-output
27 - - -
28 SEL 2 I Destination discrimination 2
29 SEL 1 I Destination discrimination 1
30 SEL 0 I Destination discrimination 0
31 VDD - VDD
32 N.CAN I Noise canceller setting
33 MOTOR O Motor-ON output
---
37 DSI O Disable System Indicator
38 EQ MUTE O Tape equaliser mute output
39 P.ON O Power on
40 - - -
3
CIRCUIT DESCRIPTION
PORT
No.
34-
36
(X14-) IC1 : SYSTEM u-COM
PORT NAME I/O FUNCTION
41 - - -
42 MS CONT O -
43 - - -
44 BEEP O Beep output(2.08KHz)
45 PANEL I Panel ON/OFF detection
46 AMP MUTE O Mute
47 CRSC I -
48 PACK IN I Pack-in detection
49 FWD/REV I Tape FWD/REV
50 SDA3 O PLL/EEPROM data line
51 SCL3 O PLL/EEPROM clock line
52 METAL O Metal mode ON/OFF
53 DOLBY O Dolby
54 AM IF CONT I AM IF count judgement
55 SD I SD input
56 REMOTE I Remote controller
---
61 T MODE I Mode pulse input
62 PHONE I Telephone mute input
63 ACC I ACC detection
64 BACK UP I Back Up detection
65 MUSIC I Tape signal detection
66 S-METER I FM band SD detection
67 HOLD I Hold Detection
68 SNS I -
69 LCTR - GND
70 HCTR - GND
---
73 VDD - VDD
74 AM IN - GND
75 FM IN - GND
76 VSS - GND
---
79 TEST1 - GND
80 XOUT I Clock output
PORT
No.
77,
78
71,
72
57-
60

KRC-28YG/YA
4
BALANCE/FADER/BASS/TREBLE:CENTER
T.ADV/METAL/DOLBY NR/AUTO:OFF
ADJUSTMENT
No. ITEM INPUT
SETTINGS OUTPUT SETTINGS RECEIVER SETTINGS
ALIGNMENT
POINTS
ALIGN FOR FIG.
CASSETTE DECK SECTION
1AZIMUTH TCC-153
10KHz SP OUT TAPE PLAY
Head azimuth
screw
(FWD/REV)
(ME1)
Adjust so that output
level in playing “FWD”
and “REV” becomes
maximum each.
(b)
F/E
(b) AZIMUTH
FRONT
FWD REV

ABCDEFGHIJ
1
2
3
4
5
6
7
5 6
C7
C6
C2
C5
R19
R18
R12
R13
R14
R22
C1
C4
R11 R3
R16
R17
C3
R2
R1
R4
R6
R7
R5
C8
BE
1
16
17 32 33
48
49
64
1
15 14
2
IC1
Q1
D24
D25
D26
43
12
VOL.
UP
DOWN
VOL.
ATT
RST
1
2
3
4
5
6
AUTO
CLK
AM
FM SRC
AUD
EJECT
X13-9672-7X
D1
D4
D5
D6
D7
D8
D9
D10
D12
D13
D2
D3
D11
D14
D16
D15
IC2
D17
D22
D21
1
24
25
38
PC BOARD (COMPONENT SIDE VIEW)
Refer to the schematic diagram for the values of resistors and capacitors.
IC Q address
14A
22B
14A
R40
R46
R104
R122
R258
R39
R47
R24
R27
R123
R45
R338
R14
W2
R23
R22
R21
W1
C122
C102C101
TH1
R48
R54
R124
R177
C43
R412
R55
R3 R4
C2
R2
C1 R1
R58
C104
C59
R13 R11
R182
C131
R179
R178
R12
R413
R50
C125
R196
R156
R52
C337
C336
C56
R62
R157
R51
C61
R71
R90
C132
R187
R419
C57
C81
R70
C66
R186
C111
R341 C105
R101
R106
R107 R143
R102
R256
R42
R129
R340
R339
R105
W3
R103
R336
R59
R53
B
E
BE
BE
EB
E
BE
B
BE
BE
BE
BE
BE
Q88
Q96
D5
D4 D3
Q83
Q85
D7
D1
Q87
Q119
Q118
Q91
Q82
Q81
Q89
D84
CMP
L
GLR
DOLBY
R
(4.50)
L1
W26
C80
L7
W35
W30
W17
W18
W13
W21
W20
W37
C46
C18
C17
W34
C16
C15
W12
W25
W33
W32
W31
W29
R29
C110
L3
L2
C65
C86
C88
C203
C12
VR2
R337
C11
W28
W36 W22
W27
C48
R175
C8
R77
W15
W14
W23
R65
C170
W24
R26
W38
C45
VR1
L6
C124
X1
C208
C3
C123
C126
C4
C47
L5
C83
C205
X86
C82
C7
C13
C67
C127
C55
C204
C128
C84
R63
R64
C85
C202
C212
1576109
2348
12
13 11 1
916
8
125
224
1
13
23
1
10
1
2
1
2
15
14
1
7
R191
R255
W5
R404
R418
R416
R180
R407
R406
R405
R417
CP4
C87 R192
R411
R408
R410
R409
C193
R30
R28
R8
R6
R257
R5
R44
R38
R37
R43
R41
R250
R36
R35 R33
R34
R125
C211
R127
CP2
CP3
CP1
C194
C195
C68
C6
R10
R251
R119
R120
R121
C54
R25
C5
R7
R9
R135
R195
R193
R184
R149
R176
R194
R415
C133
C69
C70
R67
R153
R154
C19
C20
R185
R207
R61
R114
R414
R126
R60
R56
R57
C60
R253
R142
R146
R145
28 15
141
17
814
1
10
11
20 21 30 31
40
1
56
10
1
24 25 40 41
60
6180
BE
E
BE
B
BE
E
E
B
E
BB
BE
EB
EB
BE
B
EB
E
BE
BE
EB
B
B
E
EB
E
E
B
B
BEBE
E
EB
X14-6162-71
D16
CN1
D17
D85
D332
D81
J4
Q94
Q336
D20
Q92
D86
J6
D408
D411
Q117
D333
Q80
J2
CN2
D83
CN5
D90
D19
D21
IC4
Q93
J3
D80
D18
J5
D82
CN4
J1
PRE OUT
IC2
Q41
D403
D6
Q44
Q95
IC6
IC1
Q97
Q43
Q42
Q116
IC7
Q335
Q90
IC5
Q201
Q121
Q103
D8
Q101
Q86
Q84
Q337
Q105
Q104
D11
IC Q address
16E
24G
41F
55G
66H
74F
41 3H
42 3H
43 3H
44 3H
80 4C
81 4C
82 5E
83 5F
84 5E
85 5E
86 6D
87 6D
88 6C
89 6C
90 3H
91 3H
92 3H
93 4H
94 4C
95 4D
96 4D
97 4D
101 5F
103 5F
104 6F
105 7E
116 4C
117 4C
118 4E
119 4G
121 4G
201 3G
335 6C
336 6C
337 6D

KLMNOPQRST
1
2
3
4
5
6
7
13 14
PC BOARD (FOIL SIDE VIEW)
R123
R124
R419
R182
C131
B
R336
B
E
E
BE
R413
R412
R70
C81 R71
BE
R106
R339
R341
C104
R340
C105
R107 R338
C102C101
C111
E
B
BE
BE
R62
EB
C122
R177
W3
R22
R21
R23
R27
R24
R179
R178
R105
R104
R157
R156
C125
R186
R129
R103 R102
R101
R143
BE
C132
R187
R50
C56
R53
R51
R52
C57
C336
C337
R55
R54
R59
C61
R3
C59
R58
R4
R1 R2
C1 C2
R258
W1
R40
R39
C66
EB
R90
R196
R45
R46
R42
R256
R48
R47
R122
R11 R13
R14
R12
BE
C43
W2
TH1
Q96
Q87
Q88
Q89
Q81
Q82 Q85
Q118
D3 D5 D4
D84
Q83
Q119
D7
Q91
D1
2348
12 13 11
25
W24
W25
W37
R146
E
R114
25
R119
R125
R126
EB
24
R121
R120
R26
C87
R414 E
B
R337
R77
BE
1
C80
R25
7
B
C110
E
C82
E
E
E
C83
B
R417
B
R416
BE
R142
R145
(4.50)
X1
R418
80 1
R63
R64
R30
E
B
BE
R60
R61
C85
C13
B
R415
B
C86
BE
C12
C11
9
R406
R405
R408
R410
R404 R407
610715
W31
R28
W28 C88
R29
R175
W33 W34
W32
W26
W27
W29
W30
R184
R411
R409
W35
8
R185
R176
L1
1
W23
56
R56
40
41
R149
W5
E
B
14
15
1
2
VR2
VR1
14
R251
1
C128
R65
CP1
CP2
CP3
R57
C60
R127
61
60
CP4
R180
R135
R154
C133
E
C84
17
EB
B
C127
R153
R255
R253
20
31
C5
C55
21
C54
R9
30
1
10
C123
R7
R5
10
C194
C69
C193
10
C124
11
C126
1
40
R10
R191
C19
C20
R192
C68
R67
C195
C70
R6
C3
C6
R8
1
C212 CMP
C4
L2
C170
28
148
W36
W18
C204
W17
L5
R207
B
E
W14
W15
C67
C65
W38
W22
R250
W20
EB
C46
W21
R41
15
C47
R257
C15
R193 C17
L3
C211
R194
E
C18 C16
BE
E
B
R195
E
R36
C45 C48
C202
C203
R35 R34
W13
W12
R33
C205
R43
E
B
EB
R38
R44
R37
R
C7
L
2
1
23
C8
DOLBY L
1
R
3
G
C208
B
E
B
B
L6
1
X86
L7
169
24 2
1
D19
D8
Q105
D80
CN2
Q335
Q336
D83 D333
D81
Q116
Q80
Q86
Q337
IC1
D21
D82
Q97
Q84
D20 D411
D403
Q94 Q117
D408
D85
Q95
D86
D17
D11
D16
Q104
J3
D90
Q93
CN5
IC7
Q101
D18
Q103
D332
IC6
IC5
CN1
D6
Q121
Q201
Q42
IC2
Q43
Q92
Q41 Q44
J6
CN4
Q90
J5
J1
X14-6162-71
J4
J2
IC4
PRE OUT
IC Q address
16Q
24O
41P
55O
66N
74Q
41 3N
42 3O
43 3N
44 3O
80 4S
81 4S
82 5Q
83 5P
84 5Q
85 5R
86 6R
87 6R
88 6S
89 6S
90 3N
91 3N
92 3N
93 4N
94 4S
95 4R
96 4R
97 4R
101 5P
103 5P
104 6P
115 7R
116 4S
117 4S
118 4Q
119 4O
121 4P
201 3P
335 6S
336 6S
337 6R
Refer to the schematic diagram for the values of resistors and capacitors.
1
R6
R4
C6
2
C8
R7
R5
R13
15
R3 R11
R12
14
R14
64
1
49
R18
R19
C2
C4
C1
C5
BE
48
16
17
33 32
R16
R2
C7
R17
C3
R1
R22
D25
D24
IC1
Q1
D26
AM
FM
CLK
AUTO
SRC
AUD
6
5
4
EJECT
3
2
1
RST
21
34
ATT
DOWN
VOL.
VOL.
UP
D11
D14
D16
D10
D15
D21
D17
D13
D9
D7
D8
D12
D6
D5
D4
D22
IC2
X13-9672-7X
D1
D2
D3
38
25
24
1
IC Q address
14L
22K
14L

ABCDEFGHIJ
1
2
3
4
5
6
7
0V
5.0V
5.0V
0V 5V
0V 5V
0V
5V
0V
5V
0V
0/5.0V
5V 0V
0V 5V
5.0V
0V 5V
0V 5V
0V 5V
5V 0V
0V
5V 0V
5V 0V
0V 5V
0V 5V
1.4V
3.3V
0.7V 5V
2.6V
0V
5.0V
0V
0V 0V
7.3V 7.3V
14.4V
7.3V 7.3V
7.3V
7.2V
0V 0V
3.2V 14.4V
7.3V
0V 5V
0V 5V
0V
5V
0V
0V
0V
5V 0V
0V 5V 0V
5V
5V 0V
5.0V
0V 4.8V
0V
5V 0V
0V 4.8V
0V 4.8V
5V 0V
0V 4.8V
0V
5.0V
5.0V
0V 0V 0V
0V
5V 0V
0V 5V
4.3V
0V
0V 4.8V
0V
J2
J4
D6
D7
Q201
D3
D4
D411
D408
D403
Q88
Q89
D16
CN2
u-COM
J3
D333
Q336
D21
Q335
D19
D20
D17 Q117 Q116
C
D8
Q105
Q104
DSI
SW
PANEL
P-ANT
AMP
POWER
MUTE
MOTOR
ILLUMI
D11
D80
Q118
D18
D
DET
BU
Q119
Q121
MUTE SW
HARD
B
Q80
BU5V
Ref.100
Ref.95
Ref.107
STBY
T-END
Ref.94
Ref.105
PACK
Ref.102 M2
SUB
M
M1
MAIN
M
Ref.103
FWD/REV
MUTE
DRIVE
(X14-616X-XX)
E
D86
Q96
Q95
Q94
Q97
D84
D85
Q81
Q87
Q86
CN4
P-CON
ACC
DET
TEL MUTE
CH IN
DC IN/SP OUT
D83
D81
Q337
SW
HOLD
D5
FL+
FL+ FL-
RL+
RR-
FR-
RL-
1516
87
FL-
RL+
14
6
RL-
FR-
RR-
FR+
RR+
1113
5
12
4
RR+
FR+
P.ANT
P.CON
3
9
1
10
2
GND
ACC
(F52-0006-05)
MUTE
CON
GND
REQ H
1
5
4
3
2
10
8
9Rch
REQ C
6
7 RST
B.U.
DATA C
CH GND
13
12
11 Lch
CLK
DATA H
3
1
2
13
7
5
610
11
9
4812
MUSIC
40
65
24 ANT 41
39
S MTR 66
38
P.ON
HOLD 67
37
EQ MUTE
SNS 68
36
DSI
LCTR 69
35
HCTR 70
34
71
33 MOTOR
72
32 N.CAN
VDD 73
31 VDD
AM IN 74
30 SEL 0
FM IN 75
29 SEL 1
VSS 76
28 SEL 2
77
27
78
26 SUB-
TEST 1 7925 SUB+ X OUT 80
42
CONT2
P.CON
23 43
SVR
22 44
BEEP
STBY
21 45
PANEL
20 46
AMP MUTE
AM+B
19 47
CRSC
18 48
PACK IN
17 49
FWD/REV
LCD CE
16
50
CH CON
15
51
SCL 3
REQ C
14
52
MTL
LCD CLK
13
53
DOLBY
12
54
11
55
SD
REQ H
10
56
REMO
CH CLK
9
57
DATA H
8
58
DATA C
7
59
TSTBY
6
60
5
61
T MODE
4
62
PHONE
T END
3
63
ACC
TEST2
2
64
BACK UP
XIN
1
FR
RR
R34
4.7K
C48
0.22u50
R35 4.7K
R36
4.7K
0.22u50
C47 C46
0.22u50
RL
FL
4.7K
R33
0.22u50
C45
9
1
2 3 6 7 8
4
5
TAB GND GND VCC STBY
11
10 12 13
14
SVR GND
15 17 16 18 22
19
21
20 23
GND ACC GND MUTE VCC
430
R258
R256
24
25 GND
CD RR- RR+ FR- FR+ FR1 RR1 FL1 RL1 FL+ FL- RL+ RL-
150K
R253
1K
R250
100u10
+
TH1
R408 2.2K
R23 4.7
R410 4.7K R409 4.7K
R411 47
R407 2.2K
R21 10
R406 2.2K
R405 47
R22
R404
1u50
C12
+
C13
100u50
+
C11
1u50
+
10 15
MUTE
RST
14
11
12 13
100K
R412 R413
100K
5
6
7
L1
7
6
5
4
3
2
1
6789101112131415
100K
R414
45231
D GND
ILL GND
SW 5V
LAMP +B
LDATAS
L CLK
L CE
LDATAL
VDD
RST
REMO
PANEL
ESD
10K
R336
R337
1K
1/2W
R119 10K R120 10K R121 10K
R255
22K
25 26
50
51
53
R124
2.2M
52
22K
R257
100
R207
CP4
4.7K
24
22
21
23
5
4R104 100
R105 100
R106 4.7K
R107 4.7K
R123 2.2K
46
44
44
16
13
12
11
C170
2200u16
+
15
14
9
10
8
7
240
R114
R182
R179
20K
0.01
R175
3.3K 1/2W
R184 100K
R177
39K
100K
R176
0.1
C122
1K
R142
24
4.7K
R24
47K
R26
560
R25
1W
4.5MHz
X1
C102
22P
R103
R157 1K
R156 100
GND
STBY
T-END
GND
M+B
47
4
5
16
3
R340 100K R338 100K
7
6
6
3
C203
61
49
48
39
MS
SW
GND
10
22P
C101
38
B.U.
33
33
56
45
37
37 45
56
220u6.3
+
C110
0.01
C111
FL- FL+
RL+ RL-
RR- RR+
FR- FR+
R415
100K
1u50 C204
+
1u50
C202
+
100K
0.01
C104
470
R339
RST
14 13 12 11 10 9 8
VDD
1
2 3
4
5 6 7GND
R145 47K
R146
R143 22K
66
R125 47K
47K
R126
CP1
4.7K
1K
CP3
CP2
22K
55
22K
R135
4.7K
R129
RST
0.01
C132
C131
10K
R185 10K 47K
R186
21
22
R251 4.7K
46
KRC-388
KRC-488 0-22
2-71
0-21
0-13
KRC-38MR
KRC-408
MODEL NAME
0-12
0-11
0-10
UNIT No.
KRC-28YG
KRC-308S
KRC-308S
NO
YES
A
NO
NO
B
NO
NO
NO
NO
NO
C
YES
NO
D
NO
YES
E
YES
NO
C57,59,
NO
127,128
YES
NO
NO
NO
C208 CN4
NO
YES
NO
CN5
YES
YES
NO
NO
NO
D11,
NO
RST
R180 100K
SDA 2
SCL 2
LDATAL
LDATAS
MUTE
FM+B
42
SDA 3
STBY
T-END
HEAD
MODE +B
MODE
SUB(-)
9
10
8
HEADCOM
HEADL
HEADR
GND
PACK IN
SUB(+)
F/R
4
5
7
6
3
2
1
3NC
1NC
2 GND
REEL
SUPPLY
HD1
Lch
Rch
4
5
6 GND
7 M+B
PLAY
PACK
TAKEUP
REEL
FWD/REV
MODE
T.MUTE
22K
R187
IC7
UNIT No. R122
NO
YES
YES
NO
NO
NO
NO
NO
YES
NO
R120
NO
NO
NO
YES
YES
NO
NO
YES
YES
J5 VR1,2 A1 CP2
HA12216F
HA12221F
IC1 IC5
R123,124,412-
414,416-418
PCON
GND
BU
8
7
P. CONT
6
5
4
31
2A
FR+
FL- FL+
8
7
RL- RL+
6
5
4
3
RR- RR+
FR-
2
1B
ACC
1
3
2
TEL MUTE
4
5
6
7
8
BU14V
REAR R
REAR L
4
1
3
2
GND
ACC
5
6
7
8
FRONT R
FRONT L
REAR R
REAR L
4
1
3
2
P. CONT
GND
P.CONT
ACC
5
6
7
8
FRONT R
FRONT L
C133
NO
YES
YES YES
NO
NO
NO
NO YES
YES
YES NO
YES
YES YES X86-3160-11
YES
YES
NO
NO
NO
NO
YES
NO
NO
NO
YES
NO YES NO
YES
YESNO YESNO YESNO YESNO YES
YES
YES
NO
NO YES
YESNO
NO
YES
YES YESNO
LC72366-9584
MODEL NAME
F1 (10A)
C205 1u50
+
750
R127
4.7K
EO1
EO2
EO3
SUB PD
ROLL OFF
(TEST)
(KICK)
ILL
18
17
R102 2.2K
R101 2.2K
R418 47
R416 47
R417 47
47K
R419
R178
10K
23
0.1u50
C88
+
1K 1/2W
R30
C87
22K
R29
3.3u25
C86
+
R28
1k
1/2W
0.068
4.7K
R27
C105 R341
22K
470
100u16
C80
+
22K
R70
0.01
C81
10u10
C82
+
100
R71
100u6.3
+
C83
20
R77
1K
20
12
R122
1K
0.01
W2W35
W1
NO
NO
NO
NO
NO
YES
NO 17
YES
YES
YES
YES
D84
NO
NO
NO
HA12216F
HA12216F
HA12216F
HA12221F
HA12221F
LC72366-9584
LC72366-9585
LC72366-9584
LC72366-9584
LC72366-9584
LC72366-9584
KRC-488
KRC-388
KRC-308S
KRC-28YG 2-71
0-22
0-21
0-13
KRC-408
KRC-308S
KRC-38MR 0-12
0-11
0-10
YES
YESYES YES NO NO
YES NO
X86-3160-11
X86-3160-11
X86-3160-11
X86-3160-11
X86-3160-11
X86-3162-70
W34W3
R24
NO
YES
YES
NO
58
YES
R9,10
NO
YES
119
R11-14
YES
NO
NO
NO
NO
NO
NO YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
NO
NO
YES
YES
NO
YES
NO
NO
NO
ANT CONT
P. CONT
ANT CONT
P.CONT
14
15
16
13
12
11
10
9
BU14V
FL-
FR+
FR-
FL+
RL-
RR-
RR+
RL+
ANT CONT
W34
INITIALIZE
W3
11
10
9
12
13
14
15
16
11
10
9
12
13
14
15
16
0.01
MUTE
CONT
AMP
19
RST
19
NO
NO
YES
R121
NO
YES
NO
NO
IC1
IC4
(X14-616X-XX)
IC7
SYNTHESIZER UNIT
ME1
(E30-4790-05)
DC CORD
(E30-4783-05)
KRC-408/308S/38MR(K)
DC CORD
DC CORD
KRC-28YG/YA(E)
(E30-4784-05)
KRC-488/388(M)
10K
10K
10K
47K
10K
47K
47K
47K
22K
22K
10K
22K
22K
47K
47K
22K
47K
22K
47K
10K
47K
47K

KLMNOPQRST
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.8V
4.0V
3.4V
3.4V
3.4V
3.4V
8.0V
0V
5V
0V
5.0V
5.0V(0V)
0V
2.9V
3.9V 3.1V 4.1V
3.5V
0V
0V 7.4V
0V
0V 5V
7.4V
0V 4V
0.3V 4.1V 1.8V
0V(5.0V)
0V
0V
5.0V
8.2V
4.8V
4.1V
3.0V
4.1V 1.9V 4.1V 4.1V 3.1V 3.9V
3.5V 3.3V
3.1V
3.9V
0V
0V
3.9V
4.1V
3.3V
B LINE
Q41
Q42
Q44
J6J5
PRE OUT
J1
CN1
D82
Q82
Q83
Q85
Q84
Q103
Q101
A
MUTE
SUB MOTOR DRIVER
CN5
/MPX
Q43
1L 2R 1L 2R 3L 4R
REAR FRONT
PRE OUT
FRONT
EQ/DOLBY
ANT
SIGNAL LINE
J1
X13-
2/2
TUNER/PLL
IC1 :
IC2 : TDA7461ND
IC4 :
IC5 :
IC6 : LB1930M
IC7 : HD74HC27FP
Q41-44 : DTC143TUA or UN5216
Q83,86,103,121,337
: DTC144EUA or UN5213
Q95 : 2SA1576A
Q97,116 : DTC114YUA or UN5214
Q92-94,117
: 2SB1277(O,R)
Q81,85,89,105,118
2SC4081 or 2SD1819A
Q82,87,96,119
: DTA124EUA or UN5112
Q84 : 2SA1648-Z
Q88 : 2SB1184
Q90,91 : DTC124EUA or UN5212
Q80,336 : 2SB1443
D1,3,4 : DA204K
D5 : MA3062-M
D6,7 : DAP202U
D11,84 : M1F60
D21,86 : 1SS133
D17,80,85,332,335
: AM01Z
D16 : S2V20
D18 : MA4047-M
D19 MA4068(N)-M:
D20 MA4051-L:
D81 MA4056(N)-M:
D408,411 MA4062-L:
ADJ.
DOLBY
ADJ.
DOLBY
A
B30-1511-05:D8
E.VOL.
:
D1
D332
Q104
Q101 : :DTA114YUA or UN5114 2SA1036K
Q201 : DTC114YK or UN2214
Q335 : DTC114EUA or UN5211
D403 : MA3062WA
D82 :
D83 : MA4110-L
D90 :
MA4091(N)-L
MA4051(N)-M
Q90
Q91
Q93
Q92
FM+B
AM+B
SW5V
SW14V
TDA7384A
MUTE
8V AVR
D90
F/L
7
14
12
13
11
9
10
8
4
6
5
3
1
2
22
ACOUTL AC IN L
15
CD R
OUTRF
CREF
ACOUTR
CASS R
AC IN R
OUTLF CASS L
17
16
18
OUTLR CDRGND
VDD
OUTRR CDLGND
CD L
20
19
21
25
SDA AM
GND PHONE
SCL
MPX
23
24
MUXOUT R
SMUTE
MP IN
LEVEL
MUXOUT L
MP OUT
26
28
27
+
+ +
22K
R39 R40
22K
R47
180
R45
36010u16
C17
R43
180360
R41C15
10u16
C43
0.01
R44 180
R38
22K
R37
22K
180
R48
360
R42C16
10u16
R46
36010u16
C18
+
5
6
7
0.1
C69
C70
0.1
1
C19
C67
1u50
+
FR
FL
RR
RL
RIN(L) 31
NFI(L)
36
34
33
32
FIN(L)
RIP
FIN(R)
40
39
38
37
RIN(R)
VREF
NFI(R)
23 27
29
M-OUT(L)
30 EQOUT(L)
DIN(L)
28 25 26 PBOUT(L)
24 DET(L)
21 MSGV(R)
MSI
MAOUT
19
MSGV
VCC
MSDET
17
18
15
16
9 4
M-OUT(R)
EQOUT(R)
DIN(R) 2
1 3
PBOUT(R) 6
5 7
T/R
DOLBY
MTL
F/R
12
13
14
11
10
C20
1
18K
R10
C6
12K
R8
330K
R6
0.012
C5
R9
18K
R7
12K 330K
R5
5.1K
R13
+
0.01
C54
5.1K
R14
R12
5.6K
1u50
C123
+
5.6K
R11
0.01
C125
100u10
C124
+
180K
R50
0.22u50
C126
+
C57
0.1
0.1u50
C7
R52
24K
C56
0.01
1.6K
R51
C55
0.47u50
+
R65
4.7
0.012
150
R4 22u6.3 C4
+
R2 15KR1 15K
C2 1500PC1 1500P
R54 750
R55 22K
R57
470
C60
0.01
R56 100K
1
2
3
4
5
6
7
8
9
10
HEADR
HEADCOM
HEADL
MODE
SUB(-)
MODE +B
PACK IN
SUB(+)
GND
F/R
VR2
10K
VR1
10K
150
R3 22u6.3
+
C3
100u10
+
26
R61
1K
53
52
R154
47K
9
8
61
49
48
7
9
100u10
+
C65
C66
39
3
2
1
38
R58 18K
C59 0.1
R53
+
C8 0.1u50
Lch
GND
Rch
470
C61
0.01
R59 100K
5
AUDIO OUT
IF1 GND
S-METER
IF1+B
IF2 GND
IF2+B
DIG GND
VDD 5V
OSC GND
IFC OUT
SCL
SDA
PLL+B
VT
12
9
8OSC GND
AM+B
OSC GND
7
6FM+B
AM ANT
4
2
3
FM ANT
24
22
20
19
18
16
17
13
15
14
11
SD
21
23
1
2
3
4
5
VCC
N.C.
FIN
RIN
SGND
10
9
8
7
6
N.C.
OUT1
N.C.
OUT2
PGND
C195
C68 2.7K R192
R191
L3
4.7uH
L2
4.7uH
R67
0.033
C193
150P
C194
25 7
9
0.22
C337 0.22
C336
10uH
L5
C128 10u6.3
+
0.01
66
55
51
50
C127 22u6.3
+
VR1,2
2.2K
R153
10 OSC GND
1RF GND
OSC GND
L6
4.7uH
BIAS
RAI(R)
DET(R) 8
22K
R195
1K
R193
18
17 R196
22K
R194
1K
L7
52mH
0.01
C211
150
R90
MSOUT 35
RAI(L)
22
MSGV(S)
20
GND
GND
42
10K
R60
100u16
C84
+
1K
R62
2.2
R64
1/2W
1/2W
2.2
R63
0.015
4.7K0.22
4.7K
100u10
C212
+
100u10
C208
+
C85
IC2
IC5
A
IC6
A1
4.7K
47K
47K
22K
22K
47K
47K
4.7K
4.7K
4.7K
22K
22K
22K
22K
•DC voltages are as measured with a high impedance voltmeter. Values may
vary slightly due to variations between individual instruments or/and units.
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. To reduce 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 returned to the customer.
!KRC-28YG/YA
2SB1277
2SB1443
2SC4081
DAP202U
DA204K
DTA114YUA
MA142WA
UN5212
LB1930M
DTA124EUA
DTC114EUA
DTC124EUA
DTC144EUA
DTA114EK
DTC114YK
DTC114YUA
DTC143TUA
UN5114
UN5211
UN5213
UN5214
UN5216
2SA1036K
2SA1576A
2SD1819A
2SB1184

UVWXYZAA AB AC AD
1
2
3
4
5
6
7
5V
0V
0V
5.0V
3.3V
1.7V
0V
5.0V
0V
5V
0V
0V
5V
1.7V
0V
0V
5V 0V 4.8V
+B LINE
D1D2D3
D5 D6 D4 D8 D7 D9
D13 D12 D15 D14
D22 D21
VOL+
VOL-
6
5
3
FM
ATT
SRC
CLK
2
D25 D24
J1
RESET
Q1
IC1 : LC75853NE
IC2 : RS-171
Q1 : DTA114EK or
D1-16 :
D17 :
D21,22 : B30-1572-05
D24,25 : MA3062WA
UN2111
D17D16
(X13-967X-XX)
C
J3
X14
1/2
B
A
D11 D10
LCD DRIVER
D26
1
AUDIO
TI
AM
4
D26 : MA3062-M
SENSOR
REMOTE
LCD
IC1
IC2
(X13-967X-XX)
A
10K
10K
330
R2
330
R1
470
R5
330
R3
470
R6
PL1PL2
0.1
C7
0.1
C6
R22
13
R23
33 42 38 37 36 35
34
41
40
39
43
C5 820P
R19 68K
C1 0.047
C4 0.047
R18 1K
1
2
3
4
5
6
78
9
10
11
12
13
14
15
ESD-GND
PANEL SW
REMO
RST
PAN 5V
L-DATAL
L-CE
L-CLK
L-DATAS
LAMP+B
ILL+B
SW5V
L-RES
ILL-GND
D-GND
R14 100
R13 100
R12 100
R11 100
R16
1K
1
C3
R17
47
63
64
62
61
28
18 13 16 15
14
17
23
21
20
19
22 26 25
24
27 43
31
30
29
32 35
34
33 36 37
11
40
39
38
12
8
9
10
7
27
32
31
30
29
28
23
26
25
24
22
21
20
19
18
17
15 16 10 13
14
12
11
8
9
6
1
7
KI1
KI3
KI2
KI4
64
62
61
63
KS5
1
KS4
KS3 KS2
KS4
R7
C8
0.1
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
33
34
35 36 37 38
39
40
41
42 43
44
45 46 47 48
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
S16
S15
S14
S13
S12
S11
S10
S9
S8 S7 S6 S5
S4
S3 S2
KEY
DATAS
CLK
CE
DATAL
OSC
VSS
VDD1
VDD2
VDD
TEST
KI4
KI3
KI2
KI1
KS6
S33 S34 S35 S36 S37 S38 S39 S40 COM1 COM2 COM3 KS1 KS2 KS3 KS4 KS5
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22 S23
S24
S25
S26 S27 S28
S29
S30
S31
S32 S33
S34
S35 S36 S37 S38
S39
S40 S12
S11
S10
S9
S8 S7 S6
COM1
COM2 COM3
0.01
C2
OUT
GND1
3
GND2 VCC 24
1
B30-1513-05
B30-1485-05
B30-1485-05
NO
NO
NO
YES
YES
YES
A
YES
C
B
YESNO
KS3 KS2
KS1
KI1
KI2
KI3
KI4
UNIT No.
0-12
KRC-28YG
KRC-38MR
KRC-308S
KRC-388
KRC-308S
0-13
0-11
KRC-488
KRC-408
MODEL NAME
0-10
B38-1032-05B30-1533-05 YES
YESB30-1533-05
YESB30-1533-05
B38-1026-05
B38-1026-05
YESB30-1564-05 B38-1026-05
LCDD17 D26
R4
470
KS5
KS1
6
42
41
KRC-28YA 2-71
2-72 B30-1485-05NO B38-1026-05NO B30-1564-05 NO B30-1485-05NO B38-1026-05NO B30-1564-05 NOB30-1567-05
B30-1533-05
B30-1533-05
B30-1533-05
B30-1533-05
B30-1533-05
D1-16
YES
YES
NO
YES
NO
NO
C8
360
360
470
360
470
470
R7
13
13
13
270
13
13
R22
YES
YES
YES
NO
YES
YES
R23
KI5
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to
parts list).
Indicates safety critical components. To reduce 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 returned to the
customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between
individual instruments or/and units.
!KRC-28YG/YA

KRC-28YG/YA
15
EXPLODED VIEW (MECHANISM)
Parts with the exploded numbers larger than 700 are not supplied.
AB
1
2
3
a
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
M2x2.5
M1.7x7
M2x2.2
M2x3
M2x5 (BLK)
M2.6x3(BLK)
Ø1.2 x Ø3
Ø1.6 x Ø3.2
Ø1.6 x Ø3.2
Ø2.1 x Ø3.2
Ø2.1 x Ø4
Ø1.5 x Ø3.2
Ø1.5E
Ø1.6E
: N09-4193-08
: N09-4194-08
: N09-4195-08
: N09-4196-08
: N09-4197-08
: N09-4198-08
: N09-4199-08
: N09-4200-08
: N09-4201-08
: N19-2086-08
: N19-2087-08
: N19-2088-08
: N19-2089-08
: N19-2090-08
: N19-2091-08
: N19-2092-08
: N29-0510-08
: N29-0511-08
4
73
27
2
55
76
a
M1
63
79
52
64
79
652
74
74
45 16
16
13 13
17
45
67
8
40
41
77
9
68
1
37
19
10
107
38
94
95 80 15
18
53
83 62
23
22
59
35
46
42
69
36
7
47
48
103
105
100
102
3
HD1
33 75
32
34 26
24
54
M2
70
25
71
44
39
57 14
43
G
KR
R
T
T
L
M
Q
QL
M
Ex2 M
M
887
C
L
L
L
P
P
L
S
G
899
G
G
G
G
H
Bx2
M
M
M
M
N
Dx2
Ax3
FF
5
J
J
J
J
31

KRC-28YG/YA
16
EXPLODED VIEW (UNIT)
Parts with the exploded numbers larger than 700 are not supplied.
CD
1
2
3
A
B
C
D
E
F
D
A
D
D
DD
D
M2.6x8 (BLK)
Ø 2x6
Ø 2x8 (BLK)
Ø 3x5
M3x12
Ø 3x10
D
D
D
FD
E
E
Ex2
(X14-6160-10)
X13-9670-10
C
C
C
C
C
B
B
A 1
CL1
771
770
801
706
203
246
237
223
221
235
238
207
(X14-)
ME1
702
:
:
:
:
:
:
N30-2608-45
N80-2006-46
N80-2008-45
N83-3005-46
N30-3012-46
N80-3010-46
205
726
201
248
210x2
F1
204
302
225
245
252
253
254
256
208
PA1 255
250
236
251
303
304
301
LCD1
304
220
802
803
259
DC1

KRC-28YG/YA
17
PARTS LIST
E4 : KRC-28YG E5 : KRC-28YA
∗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. Parts No. Description
A
d
d
N
e
w
Dest
inati
on
201 1C A02-1486-13 PLASTIC CABINET ASSY
203 3D A22-2385-01 SUB PANEL
204 2C A46-1656-01 REAR COVER
205 1D A52-0719-02 TOP PLATE
CL1 3D A53-1638-13 CASSETTE LID
PA1 3C ∗A64-1909-02 PANEL ASSY
207 3D B07-2181-02 ESCUTCHEON
208 3C ∗B10-3140-01 FRONT GLASS
- B46-0606-04 ID CARD
-∗B64-1582-00 INSTRUCTION MANUAL E,R,O
-∗B64-1583-00 INSTRUCTION MANUAL Z,H,C
210 1C D10-3031-04 LEVER
220 3D D10-4051-33 LEVER
221 3D D10-4052-03 LEVER
223 3D D21-2250-04 SHAFT
ME1 1D D40-1081-25 CASSETTE MECHANISM ASSY
225 3C E29-1577-02 CONDUCTIVE RUBBER
DC1 1C E30-4790-05 DC CORD
F1 2D F52-0006-05 FUSE(MINI BLADE TYPE)
235 3D G01-2525-04 TORSION COIL SPRING
236 3C G01-2738-04 COMPRESSION SPRING
237 3D G01-2792-04 EXTENSION SPRING
238 3D G02-1244-03 FLAT SPRING
- H10-4696-02 POLYSTYRENE FOAMED FIXTURE
- H25-0329-04 PROTECTION BAG (280X450X0.03)
- H25-0337-04 PROTECTION BAG (180X300X0.03)
-∗H54-1620-03 ITEM CARTON CASE E4
-∗H54-1621-03 ITEM CARTON CASE E5
245 3C J19-4882-12 HOLDER
246 3D J21-7726-04 MOUNTING HARDWARE
248 1C J21-9491-03 MOUNTING HARDWARE ASSY
250 3C K24-1927-04 KNOB SRC
251 3C K24-1948-14 KNOB RELEASE
252 3C K25-0963-03 KNOB AUD
253 3C K25-0969-03 KNOB FM,AM
254 3C K25-0970-03 KNOB AUTO
255 3C K25-0971-03 KNOB VOL
256 3C K25-0972-03 KNOB 1-6
A 3D N30-2608-45 PAN HEAD MACHINE SCREW
B 3C N80-2006-46 PAN HEAD TAPTITE SCREW
C 2C N80-2008-45 PAN HEAD TAPTITE SCREW
D 1D N83-3005-46 PAN HEAD TAPTITE SCREW
259 1C T90-0523-05 ANTENNA ADAPTOR
301 2C B11-0967-04 OPTICAL DIFFUSER
302 2C B11-0968-04 REFLECTION SHEET
303 2C B19-1166-23 LIGHTING BOARD
D1 -16 B30-1533-05 LED(1608,PG) E4
D1 -16 B30-1567-05 LED(1608,RED) E5
KRC-28YG/YA
Ref. No. Parts No. Description
Dest
inati
on
D17 B30-1564-05 LED(1608,BLUE)
LCD1 2C B38-1026-05 LIQUID CRYSTAL
PL1 ,2 B30-1543-05 LAMP (GRN,5.5V,0.12)
C1 CK73FB1E473K CHIP C 0.047UF K
C2 CK73FB1H103K CHIP C 0.010UF K
C4 CK73FB1E473K CHIP C 0.047UF K
C5 CK73FB1H821K CHIP C 820PF K
C8 CK73FB1C104K CHIP C 0.10UF K
304 2C E29-1575-04 CONDUCTIVE RUBBER
J1 E59-0828-05 RECTANGULAR PLUG
R1 -3 RK73EB2B331J CHIP R 330 J 1/8W
R4 -6 RK73EB2B471J CHIP R 470 J 1/8W
R7 RK73EB2B361J CHIP R 360 J 1/8W
R11 -14 RK73FB2A101J CHIP R 100 J 1/10W
R22 ,23 RK73EB2B130J CHIP R 13 J 1/8W
D24 ,25 MA3062WA ZENER DIODE
IC1 LC75853NE MOS-IC
Q1 DTA114EK DIGITAL TRANSISTOR
Q1 UN2111 DIGITAL TRANSISTOR
D8 B30-1511-05 LED(1∫,±∂)
C1 ,2 CK73GB1H152K CHIP C 1500PF K
C3 ,4 CE04CW0J220M ELECTRO 22UF 6.3WV
C5 ,6 CK73GB1E123K CHIPC 0.012UF K
C7 ,8 C90-2602-05 ELECTRO0.10UF 50WV
C17 ,18 C90-2597-05 ELECTRO 10UF 16WV
C19 ,20 CK73EB1C105K CHIP C 1.0UF K
C43 CK73FB1H103K CHIP C 0.010UF K
C45 -48 C90-5296-05 ELECTRO0.22UF 50WV
C54 CK73GB1H103K CHIP C 0.010UF K
C55 C90-2606-05 ELECTRO0.47UF 50WV
C56 CK73GB1H103K CHIP C 0.010UF K
C60 ,61 CK73FB1H103K CHIP C 0.010UF K
C65 CE04CW1A101M ELECTRO100UF 10WV
C66 CK73FB1H103K CHIP C 0.010UF K
C67 C90-2608-05 ELECTRO1.0UF 50WV
C68 CK73GB1E153K CHIP C 0.015UF K
C69 ,70 CK73FB1C104K CHIP C 0.10UF K
C80 CE04DW1C101M ELECTRO100UF 16WV
C81 CK73GB1H103K CHIP C 0.010UF K
C82 C90-2594-05 ELECTRO10UF 10WV
C83 CE04CW0J101M ELECTRO100UF 6.3WV
C84 CE04CW1C101M ELECTRO 100UF 16WV
C85 CE04CW1A101M ELECTRO100UF 10WV
C86 C90-2598-05 ELECTRO3.3UF 25WV
C87 CK73FB1E683K CHIP C 0.068UF K
C88 C90-2602-05 ELECTRO0.10UF 50WV
C101,102 CC73GCH1H220J CHIP C 22PF J
C104 CK73FB1H103K CHIP C 0.010UF K
C105 CK73GB1H103K CHIP C 0.010UF K
C110 CE04CW0J221M ELECTRO220UF 6.3WV
KRC-28YG/YA
SWITCH UNIT (X13-9672-7X)
SYNTHESIZER UNIT (X14-6162-71)
A
d
d
N
e
w
SYNTHESIZER UNIT (X14-6162-71)
indicates safety critical components.
!
SWITCH UNIT (X13-9672-7X)
!

KRC-28YG/YA
18
PARTS LIST
E4 : KRC-28YG E5 : KRC-28YA
∗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. Parts No. Description
A
d
d
N
e
w
Dest
inati
on
C111 CK73GB1H103K CHIP C 0.010UF K
C122 CK73FB1C104K CHIP C 0.10UF K
C123 C90-2608-05 ELECTRO 1.0UF 50WV
C124 CE04CW1A101M ELECTRO 100UF 10WV
C125 CK73GB1H103K CHIP C 0.010UF K
C126 C90-2604-05 ELECTRO 0.22UF 50WV
C131 CK73GB1H103K CHIP C 0.010UF K
C132,133 CK73FB1H103K CHIP C 0.010UF K
C170 C90-5235-05 ELECTRO 2200UF 16WV
C193 CK73FB1E333K CHIP C 0.033UF K
C194 CC73FCH1H151J CHIP C 150PF J
C195 CK73FB1C224K CHIP C 0.22UF K
C202 C90-2608-05 ELECTRO 1.0UF 50WV
C203 CE04CW1A101M ELECTRO 100UF 10WV
C204 C90-2608-05 ELECTRO 1.0UF 50WV
C205 C90-2935-05 ELECTRO 1.0UF 50WV
C208 CE04CW1A101M ELECTRO 100UF 10WV
C211 CK73GB1H103K CHIP C 0.010UF K
C212 CE04CW1A101M ELECTRO 100UF 10WV
C336,337 CK73FB1C224K CHIP C 0.22UF K
CN1 E40-9541-05 PIN ASSY
J1 E04-0312-05 RF COAXIAL CABLE RECEPTACLE
J2 E58-0863-15 RECTANGULAR RECEPTACLE
J3 E58-0879-05 RECTANGULAR RECEPTACLE
J5 E63-0013-05 PIN JACK
W12 -15 E31-0001-00 JUMPER WIRE
W17 ,18 E31-0001-00 JUMPER WIRE
W20 -34 E31-0001-00 JUMPER WIRE
W36 -38 E31-0001-00 JUMPER WIRE
L1 L33-1063-15 CHOKE COIL
L2 ,3 L40-4795-91 SMALL FIXED INDUCTOR(4.7UH,J)
L5 L40-1001-17 SMALL FIXED INDUCTOR(10UH,K)
L6 L40-4791-17 SMALL FIXED INDUCTOR(4.7UH,K)
L7 L33-1123-05 LINE FILTER COIL
X1 L77-1163-05 CRYSTAL RESONATOR(4.5M)
X1 L77-1165-05 CRYSTAL RESONATOR(4.5MHZ)
X1 L77-2025-05 CRYSTAL RESONATOR
E 1D N30-3012-46 PAN HEAD MACHINE SCREW
F 1D N80-3010-46 PAN HEAD TAPTITE SCREW
CP1 R90-0719-05 MULTI-COMP 4.7K X2
CP3 R90-0725-05 MULTI-COMP 1K X2
CP4 R90-0719-05 MULTI-COMP 4.7K X2
R1 ,2 RK73GB1J153J CHIPR 15K J 1/16W
R3 ,4 RK73GB1J151J CHIPR 150 J 1/16W
R5 ,6 RK73GB1J334J CHIPR 330K J 1/16W
R7 ,8 RK73GB1J123J CHIPR 12K J 1/16W
R11 ,12 RK73FB2A562J CHIP R 5.6K J 1/10W
R13 ,14 RK73FB2A512J CHIP R 5.1K J 1/10W
R24 RK73EB2B472J CHIP R 4.7K J 1/8W
R27 RK73EB2B472J CHIP R 4.7K J 1/8W
R28 R92-0365-05 CHIP R 1.0K J 1/2W
R30 R92-0365-05 CHIP R 1.0K J 1/2W
R33 -36 RK73GB1J472J CHIP R 4.7K J 1/16W
R39 ,40 RK73GB1J223J CHIP R 22K J 1/16W
Ref. No. Parts No. Description
Dest
inati
on
R45 ,46 RK73GB1J361J CHIP R 360 J 1/16W
R47 ,48 RK73EB2B181J CHIP R 180 J 1/8W
R50 RK73GB1J184J CHIP R 180K J 1/16W
R51 RK73GB1J162J CHIP R 1.6K J 1/16W
R52 RK73GB1J243J CHIP R 24K J 1/16W
R53 RK73FB2A471J CHIP R 470 J 1/10W
R54 RK73FB2A751J CHIP R 750 J 1/10W
R55 RK73GB1J223J CHIP R 22K J 1/16W
R56 RK73GB1J104J CHIP R 100K J 1/16W
R57 RK73FB2A471J CHIP R 470 J 1/10W
R59 RK73FB2A104J CHIP R 100K J 1/10W
R60 RK73FB2A103J CHIP R 10K J 1/10W
R61 ,62 RK73GB1J102J CHIP R 1.0K J 1/16W
R63 ,64 RD14DB2H2R2J SMALL-RD 2.2 J 1/2W
R67 RK73GB1J472J CHIP R 4.7K J 1/16W
R70 RK73GB1J223J CHIP R 22K J 1/16W
R71 RK73GB1J101J CHIP R 100 J 1/16W
R90 RK73EB2B151J CHIP R 150 J 1/8W
R101,102 RK73FB2A222J CHIP R 2.2K J 1/10W
R103 RK73FB2A223J CHIP R 22K J 1/10W
R104,105 RK73GB1J101J CHIP R 100 J 1/16W
R106 RK73FB2A472J CHIP R 4.7K J 1/10W
R107 RK73GB1J472J CHIP R 4.7K J 1/16W
R114 RK73FB2A241J CHIP R 240 J 1/10W
R119,120 RK73GB1J103J CHIP R 10K J 1/16W
R125,126 RK73FB2A473J CHIP R 47K J 1/10W
R127 RK73GB1J472J CHIP R 4.7K J 1/16W
R129 RK73FB2A472J CHIP R 4.7K J 1/10W
R135 RK73GB1J223J CHIP R 22K J 1/16W
R142 RK73FB2A102J CHIP R 1.0K J 1/10W
R143 RK73GB1J223J CHIP R 22K J 1/16W
R145 RK73GB1J104J CHIP R 100K J 1/16W
R146 RK73FB2A473J CHIP R 47K J 1/10W
R153 RK73GB1J222J CHIP R 2.2K J 1/16W
R154 RK73GB1J473J CHIP R 47K J 1/16W
R156 RK73EB2B101J CHIP R 100 J 1/8W
R157 RK73EB2B102J CHIP R 1.0K J 1/8W
R175 RD14DB2H332J SMALL-RD 3.3K J 1/2W
R176 RK73EB2B104J CHIP R 100K J 1/8W
R177 RK73GB1J393J CHIP R 39K J 1/16W
R178 RK73GB1J103J CHIP R 10K J 1/16W
R179 RK73GB1J203J CHIP R 20K J 1/16W
R180 RK73GB1J104J CHIP R 100K J 1/16W
R182 RK73GB1J103J CHIP R 10K J 1/16W
R184 RK73EB2B104J CHIP R 100K J 1/8W
R185 RK73EB2B103J CHIP R 10K J 1/8W
R186 RK73FB2A473J CHIP R 47K J 1/10W
R187 RK73GB1J223J CHIP R 22K J 1/16W
R191 RK73FB2A472J CHIP R 4.7K J 1/10W
R192 RK73GB1J272J CHIP R 2.7K J 1/16W
R193,194 RK73EB2B102J CHIP R 1.0K J 1/8W
R195,196 RK73GB1J223J CHIP R 22K J 1/16W
R207 RK73FB2A101J CHIP R 100 J 1/10W
R250 RK73FB2A102J CHIP R 1.0K J 1/10W
R251 RK73GB1J472J CHIP R 4.7K J 1/16W
SYNTHESIZER UNIT (X14-6162-71)
A
d
d
N
e
w
indicates safety critical components.
!

KRC-28YG/YA
19
PARTS LIST
E4 : KRC-28YG E5 : KRC-28YA
∗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. Parts No. Description
A
d
d
N
e
w
Dest
inati
on
R253 RK73GB1J154J CHIP R 150K J 1/16W
R255 RK73GB1J223J CHIP R 22K J 1/16W
R256 RK73GB1J751J CHIP R 750 J 1/16W
R257 RK73GB1J223J CHIP R 22K J 1/16W
R258 RK73GB1J431J CHIP R 430 J 1/16W
R336 RK73GB1J103J CHIP R 10K J 1/16W
R337 RD14DB2H102J SMALL-RD 1.0K J 1/2W
R338 RK73FB2A104J CHIP R 100K J 1/10W
R339 RK73FB2A471J CHIP R 470 J 1/10W
R340 RK73FB2A104J CHIP R 100K J 1/10W
R341 RK73FB2A471J CHIP R 470 J 1/10W
R415 RK73GB1J104J CHIP R 100K J 1/16W
R419 RK73GB1J473J CHIP R 47K J 1/16W
W1 R92-2053-05 CHIP R 0 J 1/8W
W3 R92-2052-05 CHIP R 0 J 1/10W
D1 DA204K DIODE
D6 ,7 DAP202U DIODE
D6 ,7 MA142WA DIODE
D11 M1F60 DIODE
D16 S2V20*A DIODE
D17 AM01Z DIODE
D17 ERA15-01 DIODE
D18 MA4047-M ZENER DIODE
D19 MA4068(N)-M ZENER DIODE
D20 MA4051-L ZENER DIODE
D21 1SS133 DIODE
D80 AM01Z DIODE
D80 ERA15-01 DIODE
D81 MA4056(N)-M ZENER DIODE
D82 MA4091(N)-L ZENER DIODE
D83 MA4110-L ZENER DIODE
D85 AM01Z DIODE
D85 ERA15-01 DIODE
D86 1SS133 DIODE
D90 MA4051(N)-M ZENER DIODE
D332,333 AM01Z DIODE
D332,333 ERA15-01 DIODE
IC1 LC72366-9584 MI-COM IC
IC2 TDA7461ND ANALOGUE IC
IC4 TDA7384A ANALOGUE IC
IC5 HA12221F ANALOGUE IC
IC6 LB1930M ANALOGUE IC
IC7 HD74HC27FP MOS-IC
Q43 ,44 DTC143TUA DIGITAL TRANSISTOR
Q43 ,44 UN5216 DIGITAL TRANSISTOR
Q80 2SB1443 TRANSISTOR
Q81 2SC4081 TRANSISTOR
Q81 2SD1819A TRANSISTOR
Q82 DTA124EUA DIGITAL TRANSISTOR
Q82 UN5112 DIGITAL TRANSISTOR
Q83 DTC144EUA DIGITAL TRANSISTOR
Q83 UN5213 DIGITAL TRANSISTOR
Q84 2SA1648-Z TRANSISTOR
Q85 2SC4081 TRANSISTOR
Q85 2SD1819A TRANSISTOR
Ref. No. Parts No. Description
Dest
inati
on
Q86 DTC144EUA DIGITAL TRANSISTOR
Q86 UN5213 DIGITAL TRANSISTOR
Q87 DTA124EUA DIGITAL TRANSISTOR
Q87 UN5112 DIGITAL TRANSISTOR
Q88 2SB1184 TRANSISTOR
Q89 2SC4081 TRANSISTOR
Q89 2SD1819A TRANSISTOR
Q90 ,91 DTC124EUA DIGITAL TRANSISTOR
Q90 ,91 UN5212 DIGITAL TRANSISTOR
Q92 -94 2SB1277(Q,R) TRANSISTOR
Q95 2SA1576A TRANSISTOR
Q96 DTA124EUA DIGITAL TRANSISTOR
Q96 UN5112 DIGITAL TRANSISTOR
Q97 DTC114YUA DIGITAL TRANSISTOR
Q97 UN5214 DIGITAL TRANSISTOR
Q101 2SA1036K TRANSISTOR
Q103 DTC144EUA DIGITAL TRANSISTOR
Q103 UN5213 DIGITAL TRANSISTOR
Q104 DTA114YUA DIGITAL TRANSISTOR
Q104 UN5114 DIGITAL TRANSISTOR
Q105 2SC4081 TRANSISTOR
Q105 2SD1819A TRANSISTOR
Q118 2SC4081 TRANSISTOR
Q118 2SD1819A TRANSISTOR
Q119 DTA124EUA DIGITAL TRANSISTOR
Q119 UN5112 DIGITAL TRANSISTOR
Q121 DTC144EUA DIGITAL TRANSISTOR
Q121 UN5213 DIGITAL TRANSISTOR
Q201 DTC114YK DIGITAL TRANSISTOR
Q201 UN2214 DIGITAL TRANSISTOR
Q335 DTC114EUA DIGITAL TRANSISTOR
Q335 UN5211 DIGITAL TRANSISTOR
Q336 2SB1443 TRANSISTOR
Q337 DTC144EUA DIGITAL TRANSISTOR
Q337 UN5213 DIGITAL TRANSISTOR
TH1 ∗PTH9C42BD471Q POSITIVE RESISTOR
A1 2D X86-3162-70 FRONT-END UNIT
1 2A A10-4329-08 CHASSIS ASSY
2 1A J21-7779-08 MOUNTING HARDWARE
3 2B A11-0931-08 SUB CHASSIS ASSY
4 1A D10-4106-08 ARM
5 2A D10-4107-08 ARM
6 2A D10-4108-08 ARM
7 2B D10-4109-08 ARM
8 2A D10-4110-08 ARM ASSY
9 2A D10-4111-08 ARM ASSY
10 3A D10-4112-08 ARM
13 2A D10-4113-08 ARM
14 1B D13-1324-08 GEAR ASSY
15 3A D01-0609-08 FLYWHEEL ASSY
16 2A D13-1325-08 GEAR ASSY
17 2A D10-4114-08 ARM ASSY
SYNTHESIZER UNIT (X14-6162-71)
CASSETTE MECHANISM ASSY (D40-1081-25)
A
d
d
N
e
w
indicates safety critical components.
!
CASSETTE MECHANISM ASSY (D40-1081-25)

KRC-28YG/YA
20
PARTS LIST
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. Parts No. Description
A
d
d
N
e
w
Dest
inati
on
18 3A D01-0610-08 FLYWHEEL ASSY
19 3A D13-1326-08 GEAR ASSY
22 2B D10-4115-08 SLIDER
23 3B D10-4116-08 SLIDER
24 1B J21-7780-08 MOUNTING HARDWARE
25 1B D10-4117-08 ARM
26 1B D10-4118-08 SLIDER
27 1A A52-0716-08 HOLDER
31 3B J21-7781-08 MOUNTING HARDWARE
32 1B J90-0767-08 GUID
33 1B J19-4737-08 BRACKET
34 1B D12-0622-08 CAM
35 2B D13-1327-08 GEAR
36 2B D13-1328-08 GEAR
37 3A D13-1329-08 GEAR
38 3A D10-4119-08 ARM
39 1B D13-1330-08 GEAR
40 2A D13-1331-08 GEAR
41 2A D13-1332-08 GEAR
42 2B J11-0619-08 CLAMPER
43 1B D13-1333-08 GEAR
44 1B D13-1334-08 GEAR
45 2A D13-1335-08 GEAR
46 2B D10-4120-08 ARM
47 2B J19-4738-08 HOLDER
48 2B J11-0620-08 CLAMPER
52 2A D03-0312-08 REEL DISK
53 3A D15-0913-08 PULLEY
54 1B D13-1336-08 WORM
55 1A D10-4121-08 SLIDER
57 1B D13-1337-08 GEAR
59 2B J31-1036-08 COLLAR
62 3B D14-0683-08 ROLLER
63 1A D14-0684-08 ROLLER
64 1A D15-0914-08 PULLEY
67 2A G01-2832-08 TORSION COIL SPRING
68 2A G01-2833-08 TORSION COIL SPRING
69 2B G01-2834-08 TENSION COIL SPRING
70 1B G01-2835-08 TORSION COIL SPRING
71 1B G01-2836-08 TORSION COIL SPRING
73 1A G09-2020-08 SPRING
74 2A G01-2837-08 COMPRESSION COIL SPRING
75 1B G01-2838-08 TORSION COIL SPRING
76 1A G01-2839-08 TORSION COIL SPRING
77 2A G01-2843-08 TORSION COIL SPRING
79 1A G01-2840-08 TENSION COIL SPRING
80 3A G01-2841-08 TENSION COIL SPRING
83 3A D16-0609-08 BELT
94 3A S64-0804-08 LEVER SWITCH
95 3A S64-0805-08 LEVER SWITCH
100 2B E30-4460-08 CONNECTOR ASSY (10P)
102 2B T95-0213-08 PHOTO COUPLER
103 2B S62-0858-08 SLIDE SWITCH
105 2B S74-0813-08 LEAF SWITCH
107 3A E30-4468-08 CONNECTOR ASSY (7P)
Ref. No. Parts No. Description
Dest
inati
on
A 1B N09-4193-08 SCREW
B 1B N09-4194-08 SCREW
C 3A N09-4195-08 SCREW
D 1B N09-4196-08 SCREW
E 2A N09-4197-08 SCREW
F 1B N09-4198-08 SCREW
G 1A N09-4199-08 SCREW
H 2B N09-4200-08 SCREW
J 3B N09-4201-08 SCREW
K 2A N19-2086-08 FLAT WASHER
L 3A N19-2087-08 FLAT WASHER
M 1B N19-2088-08 FLAT WASHER
N 1B N19-2089-08 FLAT WASHER
P 3A N19-2090-08 FLAT WASHER
Q 2A N19-2091-08 FLAT WASHER
R 1A N19-2092-08 FLAT WASHER
S 2B N29-0510-08 RETAINING RING
T 2A N29-0511-08 RETAINING RING
HD1 1B T31-0220-08 PLAYBACK HEAD
M1 1A T42-0759-08 MOTOR ASSY (MAIN)
M2 1B T42-0755-08 MOTOR ASSY (SUB)
CASSETTE MECHANISM ASSY (D40-1081-25)
A
d
d
N
e
w
E4 : KRC-28YG E5 : KRC-28YA

KRC-28YG/YA
21

KRC-28YG/YA
KENWOOD CORPORATION
14-6, Dogenzaka 1-chome, Shibuya-ku,Tokyo 150-8501 Japan
KENWOOD SERVICE CORPORATION
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS LATIN AMERICA S.A.
P.O. BOX 55-2791, Piso 6, Plaza Chase, CI. 47 y, Aquilino de la Guardia, Panama,
Republic of Panama
KENWOOD ELECTRONICS BRASIL LTDA.
Av. Moema, 170-17˚, Andar-Cobertura “B”, Ed.Maximum Service Center, 04077-020
Moema, São Paulo-SP-Brasilil
KENWOOD ELECTRONICS UK LIMITED
Kenwood House, Dwight Road, Watford, Herts, WD1 8EB United Kingdom
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker-Str.15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS BELGIUM N.V.
Mechelsesteenweg 418, B-1930 Zaventem, Belgium
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G.Sirtori 7/9, 20129 Milano, Italy
KENWOOD IBÉRICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD. (A.C.N. 001 499 074)
16 Giffnock Avenue, North Ryde, N.S.W. 2113, Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.
Unit 3712-3724, Level 37, Tower 1, Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T.,
Hong Kong
KENWOOD ELECTRONICS GULF FZE
P.O.Box 61318, Jebel Ali, Dubai, U.A.E.
KENWOOD ELECTRONICS (THAILAND) CO., LTD.
2019 New Pechburi Road, Bangkapi, Huaykwang, Bangkok, 10320Thailand
KENWOOD ELECTRONICS SINGAPORE PTE. LTD.
1 Genting Lane #07-00, Kenwood Building, Singapore, 349544
KENWOOD ELECTRONICS (MALAYSIA) SDN BHD
#4.01 Level 4,Wisma Academy Lot 4A, Jalan 19/1, 46300 Petaling Jaya, Selangor Darul Ehsan,
Malaysia
SPECIFICATIONS
Frequency Range (MHz)
(Frequency Step)
Usable Sensitivity
(S/N:26dB)
Quieting Sensitivity
(S/N:46dB)
Frequency Response
( ±3.0dB)
S/N(dB)
Selectivity(DIN)(dB)
Stereo Separation
Frequency Range (kHz)
(Frequency Step)
Usable Sensitivity
(S/N:20dB)
Frequency Range (kHz)
Usable Sensitivity
(S/N:20dB)
Tape Speed
Wow/Flutter(wrms)
Frequency Response (Hz)
( ±3.0dB)
Separation (dB)
S/N Dolby NR OFF
PWR(MAX)
PWR DIN45324.+B=14.4V
Bass
Treble
Operating Voltage
(11V-16V allowable)
Current Consumption
Installation Size (W)
(H)
(D)
Weight
KRC-28YA/YG
TDF
CR2
87.5MHz-108.0MHz
(50kHz)
0.7µV/75 Ω
1.6µV/75 Ω
30Hz-15kHz
65dB(MONO)
≥80dB (±400kHz)
35dB(1kHz)
531kHz-1611kHz
(9kHz)
25µV
153kHz-281kHz
45µV
4.76cm/sec.
0.08%(WRMS)
30Hz-14kHz(120µs)
43dB(1kHz)
54dB
1800mV/10kΩ
≤600Ω
40Wx4
26Wx4
100Hz ±10dB
10kHz ±10dB
14.4V
10A
182
(mm) 7-3/16 (in)
53 (mm) 2-1/16 (in)
155 (mm) 6-1/8 (in)
1.4kg 3.1Lbs
Tuner Type
GENERAL
TONE
AMPLIFIER
Preout Impedance
Preout Level(mV)/Load
CASSETTE
MW
FM
KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.
LW