Kenwood KRF-V4550D Service Manual page 11

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