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Kenwood KRF-V4550D Service Manual page 11

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AO
AP
(X08-3010-10) (A/3)
IC14
ANALOG 6ch
INPUT SELECTOR
Lch
-11.9V
C121 22P
12V
R123 10K
R125
R127 2.4K
2
8
100
1
3
Cch
LPF
4
IC13 (1/2)
+12V
12V
C126
100P
IC13 (2/2)
5
4
R128
7
2.4K
6
8
12.0V
+12V
R124 10K
R122
10K
C122 22P
R126
S.W ch
100
+12V
+12V
12V
12V
-11.9V
12.0V
-11.9V
12.0V
-11.9V
5
C209
C309
0.01
0.01
C210
C310
100P
100P
LS
1
7
RS
Cch
1
7
SW
4
8
4
8
3
2
3
2
IC31
IC21
6 5
IC21
IC31
6
5
(2/2)
(1/2)
(2/2)
(1/2)
R211
R209
R210
R212
R311
R309
R310
R312
5.6K
2.7K
2.7K
5.6K
4.7K
10K
10K
4.7K
C205
C206
C305
C306
2200P
2200P
1800P
6800P
R203
R204
100K
100K
R303
R304
100K
100K
41
+2.5V
+5V
+3.3V
1
10
+5V
+5V
5.0V
IC42
LEVEL
SHIFTER
(3.3V-5V)
IC42
9
AQ
AR
+7.1V
20
12
R175 47K
C141
100P
R174 47K
R173 47K
R172 47K
+7.1V
C160 2.2
IC14
6
C159 2.2
8
C158 2.2
9
41
C157 2.2
40
11
C156
R154
13
1
10
7
C155
R153
16
15
1
10
C152
R152
2.2
10
16
C151
R151
2.2
10
17
R155
C161
10
8200P
C163
0.015
C165
0.33
7.1V
7.6V
Q15
R170
470
12.0V
+7.0V
AVR
+12V
12V
+2.5V
+3.3V
+5V
AS
AT
C183
R165 750
1
5.4V
R166
ELECTRIC
2.7K
VOL./ TONE
IC15
42
1
41
2
41
40
I/F
40
3
MCU
39
39
4
38
5
37
AVDD
AGND
R164
C182
6
36
100
2.2
36
7
R163
C181
GND
100
2.2
8
35
35
R162
C180
9
34
100
2.2
34
10
GNDC
R161
C179
11
33
100
2.2
33
R160
C178
100
2.2
12
32
GNDR
32
13
R159
C177
31
100
2.2
14
31
GNDL
30
15
AVSS
-7.1V
29
C167 2.2
C169
16
28
R157 1K
2200P
TONE
27
C168 2.2
17
C170
26
R158 1K
2200P
TONE
18
C162
R156
LTRE
25
8200P
10
RTRE
C164
19
24
LBASS3
RBASS3
20
23
0.015
LBASS2
RBASS2
21
22
C166
LBASS1
RBASS1
0.33
-7.1V
C185
C186
12
0.1
0.1
3
5
Q16
D151
D152
41
-7.6V
R171
470
-11.9V
-7.0V
AVR
+12V
12V
+2.5V
2.5V
AVR
IC47
R454
2.2
+2.5V
OUT
IN
1/4W
GND
PROTECTION
+3.3V
3.3V
AVR
IC46
R453
R465
Q42
4.7
8.0V
1K
+3.3V
OUT IN
1/4W
GND
Q41
R463
47K
+5.0V
5.0V
AVR
IC45
R461
R452
1
220
+5V
OUT
IN
1/4W
GND
+B
8.4V
KRF-V4550D/E/-S (3/4)
AU
AV
IC1,11,13,21,31
: NJM4565MD
IC2
: AK4527-VQ
IC4
: TC7WU04FU
IC5
: AK4110-VF
IC6
: TC7WH123FU
IC12,14
: NJU7311AM
IC15
: M62446FP
IC41
: TC74HC07AF
CN1
IC42
: TC74HCT7007AF
7
1
RREC
IC45
: TA48M05F
IC46
: TA48M033F
19
2
RDVD
IC47
: TA48M025F
5
3
RT
IC51
:
CS493253-CLR or
4
GND
CS493263-CLR
IC61
: NJM2279M
5
LT
6
LDVD
Q1
: DTC124EUA or
UN5212
7
LREC
Q15,61
: 2SD1664(Q,R)
8
GND
Q16,62
: 2SB1132(Q,R)
9
LAUX
Q41
: 2SC4081(R,S) or
10
GND
2SD1819A(Q,R)
Q42
: 2SA1576A(R,S) or
11
RAUX
D
2SB1218A(Q,R)
12
GND
31
13
L
D1,3
: 1SS301 or
34
14
LS
DAN202U or
33
15
C
MA142WK
D2
: 1SS300 or
36
16
SW
DAP202U or
35
17
RS
MA142WA
32
18
R
D6,51,52,75,76
19
AGND
: MA111
12V
20
-VSS
D41
: S1ZB20(4072)
+12V
21
+VDD
D42,43,61,62
: UDZ5.6B or
22
MGND
HZU5.6(B2)
+B
23
MVDD
D44
: UDZ3.9B or
8.0V
HZU3.9(B2)
D151,152 : UDZ7.5B or
HZU7.5(B2)
2SC1845
2SC2878
C411 22P
C412 22P
C413 22P
CP41
CN2
180
21
CDOUT
20
CDIN
19
CCLK
2SC1740S
UN5219
18
CS CODEC
2SA1576A
C414 22P
2SB1218A
C415 100P
C416 100P
CP42
180
1
17
CS DSP
9
16
PD DSP
10
15
INTREQ
X14-A/6
13
14
CS ROM
-CN2
CP43
4/4
180
2SD1664
17
13
PD CODEC
F
2
12
ERR
4
11
DZF
6
10
DDET
C417 100P
C418 100P
CP44
180
39
9
LATCH
40
8
DA
7
ST1
41
6
CK
2SB1566
7
R412 220
5
5
ST2
4
PROT
3
SDATA
C753
2
SBUSY
0.01
1
GND
D76
D75
J75
C752
220P
SYSTEM
CONTROL
BUSY
C751
220P
DATA
NJM4565M
GND
NJM4565MD
NJM4580ED
CN5
D41
1
DPWR1
R450
C
0.33
2
DPWR2
1/4W
KRF-V4550D/V4550DE/V4550D-S
Y05-4332-70
AW
AX
CAUTION: For continued safety, replace
safety critical components only with manu-
facturer's recommended parts (refer to
parts list).
indicates safety critical compo-
nents. For continued protection against risk
of fire, replace only with same type and rat-
ing fuse(s). To reduce the risk of electric
shock, leakage-current or resistance mea-
surements shall be carried out (exposed
parts are acceptably insulated from the sup-
ply circuit) before the appliance is returned
to the customer.
The DC voltage is an actual reading mea-
sured with a high impedance type voltmeter
with no signal input. The measurement
value may vary depending on the measur-
ing instruments used or on the product.
2SD2395
2SC2785
2SD1819A
2SB1132
2SC4081
DTA124EUA
2SD1757K
DTC123JUA
DTC124EUA
NJM4580E
TC74HC07AF
DAN202U
DAP202U
DA204U
2SC3906K

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