Kenwood KRC-X838, Service Manual

Page: 16 / 27

J K L N M O P R Q
1
2
3
4
5
6
7
4.7K 4.7K 4.7K 4.7K 4.7K 4.7K
47K
47K
47K
2.2K
22K
22K
22K
22K
22K
22K
4.7K
22K
22K
22K
22K
0V
5V
4.1V
4.1V
0.4V 4.1V 8.2V
4.1V
0.3V
5V
0V
5V
0V
0.4V 4.1V 4.1V
0V
4.1V
4.1V
4.1V
4.1V
4.1V
0V
0V
4.1V
0V
4.1V
4.1V
5.0V 0V
5.0V 5.0V
0V
0V 5.0V
5.0V
5.0V
5.0V
0V
0V
0V
0V 0V
5.0V 7.7V
0V
14.4V 7.7V
7.7V
1.3V
1.4V
1.4V
9.0V
7.7V
1.4V
0V
1.4V
0V
4.1V
14.4V
0V 7.7V
7.7V
7.7V
7.7V
9.7V 0V
0V
0V
0V
0V
-9.3V
0V
4.1V
8.2V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
0V
0V
4.1V
4.1V
0V
4.1V
0V
4.1V
0V
4.1V
0V
4.1V
0V
4.1V
4.1V
4.1V
4.1V
4.1V
5.0V
4.1V 4.3V 4.3V 4.8V 4.1V 4.1V
3.6V
0V
5V
0V
4.1V
4.1V
8.2V
0V
4.1V
4.1V
4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V
4.1V
4.1V
4.1V
0V 4.1V
4.1V
4.1V
8.2V
4.1V 8.2V
4.1V
4.1V
0V
4.1V
4.1V
4.1V
8.2V
0V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
4.1V
8.2V
4.1V
0V
-10.0V
10.6V
0V
10.6V
0V
10V
-9.3V
0V
0V
0V
0V
0V
0V
9.7V
-9.3V
0V
0V
0V
0V
0V
9.7V
0V
-10V
0V
-5.5V -5.6V
0V
5.0V 5.0V
IC2
IC22
IC4
*
IC10
IC7
IC5
IC8
IC21
IC20
IC6
*
IC11 IC12
44 43 42 41 40 39 38 37 36 35 34
33
32
31
30
29
28
27
26
25
24
23
12 13 14 15 16 17 18 19 20
21
22
1
2
3
4
5
6
7
8
9
10
11
T
APE R
T
APE L
CREF VREF
A
C
IN LF
A
C
IN RF
A
C
IN RR
A
C
IN LR
NC36
A
C
OUT L
A
C
OUT R
NC33
OUT LF
OUT RF
OUT LR
OUT RR
NC28
VS
GND
NC25
SDA
SCL
MPX NC13 LEVEL MP IN MP OUT NC17 MUXL MUXR NC20 QU
A
L
S MUTE
CDR
CDR OUT
CD GND
CD L OUT
CD L
NC6
PHONE-
PHONE+
AFS
AM
NC11
10 9 8 7 6 5 4 3 2 1
40
39
38
37
36
35
34
33
32
31
21
22 23 24 25 26 27 28 29 30
11
12
13
14
15
16
17
18
19
20
MSLPF
NC2
TCH 1
LINE OUT 1
NC1
VCC
T
APE IN 1
OUT REF 1
PB OUT 1
PB
TC 1
PB FB 1
PB R IN 1
PB GND 1
PB F IN 1
PB REF
VCT
PB F IN 2
PB GND 2
PB R IN 2
PB FB 2
MS SW NC4 TCH 2 LINE OUT 2 DIREF GND T
APE IN 2
OUT REF 2 PB OUT 2 PB
TC 2
G2 FB
G1 FB
MS TC
MS OUT
NC3
NR SW
MUTE SW
TAPE SW
DR SW
MS MODE 1
3
5
7
9
11
13
15
17
19
21
23
25
TAB
OUT 2-
OUT 2+
OUT 1-
OUT 1+
IN 1
S GND
IN 3
OUT 3+
OUT 3-
OUT 4+
OUT 4-
HSD
2
4
6
8
10
12
14
16
18
20
22
24
P GND 2
STBY
VCC 1
P GND 1
SVR
IN 2
IN 4
AC GND
P GND 3
VCC 2
MUTE
P GND 4
1
2
3
4
A OUT
A IN-
A IN+
V-
8
7
6
5
V+
B OUT
B IN-
B IN+
1
2
3
4
5
6
7
A OUT
A IN 1
A IN 2
B OUT
B IN 1
B IN 2
GND
14
13
12
11
10
9
8
VCC
D OUT
D IN 2
D IN 1
C OUT
C IN 2
C IN 1
15
16
17
18
19
20
21
22
23
24
25
26
27
28
HRR 2
HRR 1
HRL 2
HRL 1
HFR 2
HFR 1
HFL 2
HFL 1
CREF
A GND
D GND
SCL
SDA
VCC
14
13
12
11
10
9
8
7
6
5
4
3
2
1
HRRO
HRLO
OREF
HFRO
HFLO
AXO L
AXO R
CL 2
CL 1
CR 2
CR 1
MUTE
AXI R
AXI L
1
2
3
4
A OUT
A IN-
A IN+
V-
8
7
6
5
V+
B OUT
B IN-
B IN+
1
2
3
4
5
6
7
A IN1+
A IN1-
A IN2+
A IN2-
A OUT
A SW
VEE
14
13
12
11
10
9
8
B IN1+
B IN1-
B IN2+
B IN2-
B OUT
B SW
VCC
5
6
7
8
B IN
VM 2
B OUT
VCC
4
3
2
1
GND
A IN
VM 1
A OUT
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
F
A
C 1
F
A
C 2
FL +B
FL GND
RST
A
UDIO
P RST
SC D
A
T
A
MC CLK SC REQ
MC REQ SC CON
P
AN 5V
D GND
NC NC
EJECT ILL(R) EJECT ILL(G)
EJECT KEY
ESD GND
1
2
3
4
5
6
7
8
9
10
11
12
SUB M+
SUB M-
MAIN M
GND
MODE 3
MODE 1
MODE 2
SW 5V
F REEL ANODE R REEL
NC
24K
R617
24K
R619
470P
C605
470P
C603
24K
R618 470P C604
33u10
+
C606
R616
24K
C602 470P
180
R609
1K
R611
0.01
C625
33u10
+
C607
33u10
+
C608
0.01
C626 180
R610
1K
R612
10K VR1
C617
0.1
47u16
C609
+
C615
0.1
4.7
R603
0.47 2.7K
R620
4700P
100K
0.022
10u10
+
R613
33K
C621
C612
R626
C613
C601
R632 1K
10u10
C627
+
47K
R621
67
66
48
49
25
26
C616
0.1
0.1
R615
VR2 10K
C614
20K
4
5
CAP-
V OUT
OSC
BST
GND
CAP+
3
2
1
V+
LV
6
7
8
0.22u50
C120
0.22u50
C119
0.22u50
C118
0.22u50
C117
FR
RR
FL
RL
1u50
+
C129
4.3K
R203
10
R204
4.7K
R202
1u50
+
C115
470
TH1
12
RRP
FRM
RRM
FRP
1u50
+
C116
33u10
+
C114
33K
R114
220
R200
FLM
RLM
RLP
FLP
18
22
10u16
* C96
+
22K
* R168
82
R170
2200P
C97
2200P
C98
10u16
* C95
+
22K
*
R167
82
R169
10K
*
R165
*
R163
10K
*
R166
*
R164
* W8 * W7
R162
470
+
* C94 * C93
+
470
R161
C104
2200P
B IN+
B IN-
B OUT
V+
*
R174
*
R176
10K
* W14
*
C100 +
470
R172
*
R173
*
R175
10K
*
R177
22K
3
4
2
A IN+
V-
A IN-
* C102
10u16
+
A OUT
1
C103
2200P
R180
82
* W10
* C99
+
470
R171
22K
5
6
* R178
10u16
* C101
7
8
+
82
R179
22u16
+
22u16
470
R181 R182
470
R186
R184 2.2K R183 2.2K
10K
R185
10K
+
R190
C108
R188
22K
R187
10u16
C107
+
B OUT
B IN-
B IN+
A IN+
V-
4
A IN-
2
3
5
6
A OUT
1 8
7
V+
R189
82
C109 C110
2200P 2200P
22K
10u16
+
82
C105 C106
PFL
PFR PRR PRL PNR PNL
*
W5
*
W6
0.022
C30 56K R27
47
R29
7.5K
R26
47
R25
2.7K R24
2.2
C27
2.2
C28
22u16
C29
+
4.7u16
C23
+
2.2
C25
2.2
C26
22uH
L3
75
R23
1K
R21
10K R30
0.01 C31 91K R32
4.7u16
C32
+
91K R31
4.7u16
C33
+
100u16
C24
+
12K
R41
1000P
C37
22K
R42
15K R43
3.3K
R45
47K
R46
0.01 C38 18K R47
0.01
C39
13
12
14
10
10K
R19
1u50
C22
+
0.022
C21
10K R15
88 15 24
560
R14
1K
R13
0.01 C20
0.1u50
C36
+
4.7K R37
4.7K R33
9
11
R39 22K
3.3u25
C34
+
1K
R38
0.068
C35
1/2W
22K
R1
0.01
C4
220u16
C3
+
10u10
C5
+
2.2K
R4
100K R116
100u6.3
C6
+
22K
R3
C48 0.01
27 28
45
30 19
0.33u50
+
C81
0.33u50
C85
C83
0.33
C84
0.33
0.33
C87
C88
0.33
0.33u50
C86
0.33u50
C82
+
C60
1u50
+
7
8
4.7u16
C78
4.7u16
C79
C92 0.1
C91 0.1
C90 0.1
C89 0.1
C16 0.01
R154 330K
C74 0.1
0.47 C70
C72
0.033
10K
R151
4.7K
R150
R153 330K
R152 4.7K
C75 0.1
150P
C71
4.7K
R98
C73 0.01
C9 47u10
+
4.7uH
47K
R140
4.7u16
+
C50
33K
R144 47K
R143
4.7u16
+
C53
1K
R142
R146 820
C54 10u16
+
C59
R145 47K 4.7u16
+
C49
15K
R141
C51
4.7u16
+
C52
4.7u16
+
0.01
C55 1
R149 24K
10u16
C58
+
1K
R147
9.1K
R148
5
3
1
50
* C77 4.7u16 C63 2.2u50
+
1
C65
1
C66
* C76 4.7u16 * C56 4.7u16 * C57 4.7u16
C136 0.01
C132 1
47K
R112
47K
R113
C80 1
*
W11
* W12
64
22u10
C61
+
0.01
C134
0.1
C205 100K R109
10u16
C62
+
10
R34
4.7u16
+
C47
R2 10 4.7u16
+
C46
4.7
R36
3300P
C202
1
2
3
4
5
0.1
C863
470
R817
89
6
96
2
100
11 95
4.7K
R230
22K
R231
23
0.01
C121
0.01
C624
470
R607 R624100K
470
0.01
R606
C623
R623100K R605
470
R622100K
C622
0.01
R604
120
69 68
91 81
80
* W4 * W3 * W2 *
W1
78
100K R217
6 4
5
4 2
3 1
RR FR
FL
RL
79
86
0-21
2-70
UNIT No. MODEL NAME
X838(E)
KRC-Z965(M)
NO
YES YES
NO
A
96,101,102,814
C56,57,76,77,95,
2.2M
100K
R809
C D E B
YES
NO
99,100
C93,94,
10u16
22u16 NO
YES
IC10,11
808
R63,807,
YES
NO
175-178
R64,69,165,-168,
NO
YES
173,174,
R163,164,
22K
2.2K
10-12,14
W1-8,
YES
NO
+8V +8V +8V
L5
+8V
+8V
+8V
+8V +8V +8V
+8V
+8V
+8V
+14V +14V +14V +14V
9V
+9V
9V
9V
+9V
9V
+9V
+9V
9V 9V
+9V
+9V
9V
+9V
9V
9V
9V
+9V +9V +9V
BU
BU
BU BU BU BU BU
BU
BU
BU BU
BU BU BU BU
+B
FL+B
+B
+B
+B
+B
FL+B
+B
+B
+B +B
BU
BU
BU
BU
BU
BU
BU
BU
BU
Lch
Rch
C201
3300P
1/2W
29
SW5V
BU5V
SW5V SW5V
SW5V
BU5V
B
U5V
BU5V BU5V
B
U5V
BU5V BU5V BU5V
SW5V
SW5V SW5V SW5V
SW5V
SW5V
SW5V
F
Q14
Q32
Q38
Q37 Q39
Q40
Q41
Q42
Q16,17
R28 91K
Q21-23
Q27
Q28
1/2W
R40 1K
Q36
IC21
C206 0.1
R627 47K
Q34
C64 0.033
+5V
CN6 CN8
D32
D38 D39
D41
D40
D30
D33 D34 D36 D35
FRONT
Q37 Q38 Q40 Q39 Q41 Q42
REAR (3PRE)
N-F (3PRE)
REAR (2PRE)
**
D
Q18
D10
Q16
D9
Q17
DC/DC CONVERTER
Q20
Q19
Q21
Q22
Q23
**
E
Q30
D16 D17
Q31
BU DETECTION SW
Q14
D7
Q15
D15
Q27
D13
Q28
D11
Q26
D14
Q29
D12
P-CON SW
Q3
D3
D2
Q476
Q2
BU 5V AVR
SW 5V
MUTE LOGIC
D20
Q32
**
C
Q36
Q35
D21
Q34
OP.AMP.
D51
SWITCHED OP. AMP.
Q103
D4
D19 D18
ISOLATION AMPLIFIER
**
A
D52 D53 D54 D55 D56 D59 D58 D57 D60 D61 D62
S1
D63
Q51
P1
CN5
PANEL-DET SW
PAN
5V SW
E-VOL. &
POWER IC
(X25-923X-XX)
CASSETTE
MECHA
CASSETTE
-PLAY HEAD-
MECHA
DOLBY IC
4.5V PRE
DIMMER DETECTION SW
EX. AMP.
CON SW
DRIVER
MUTE
OP. AMP. OP. AMP. OP. AMP.
AUDIO
(FRONT R)
MUTE SW
MUTE SW
(FRONT L)
AUDIO
MUTE SW
(NON-FADER L)
AUDIO
(NON-FADER R)
AUDIO
MUTE SW
MUTE SW
(REAR R)
AUDIO
AUDIO
MUTE SW
(REAR L)
HIGH PASS FILTER &
NON-FADER VOLUME
A. +10V
AVR
PRE-AMP
-9V AVR
+9V AVR
PRE-AMP
ACC DETECTION SW
P-CON SW
P-CON PROTECTION SW
P-CON PROTECTION INHIBIT SW
N.C. MPX
E. VOL
SW
MUTE
NOISE
BUFFER
AUX/TAPE
SELECTOR
SW
AGC for
SPECTRUM
ANALYSER
A
2/2
B
2/2
X89-
CN1
C
2/2
NJM4565M-TE2
8
5
1
4
DAN202U
K
A2
A1
DAP202U
DA204U
DTA114YUA
1
2
3
MA142WA
MA142WK
UN5212
2
1
3
TC74HC02AF
1
7
14
8
BA3129F
1
7
8
14
BA3830F
1
9
10
18
BA3121F
1
4
5
8
M5237ML
1
2
3
8
1
4
5
BR24C02F-W
8
1
9
16
TC74HC4050AFT
TDA7479D
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299