AX
AO
AQ
AS
AU
AW
AP
AR
AT
AV
KRF-V4550D/V4550DE/V4550D-S
Y05-4332-70
4
3
2
1
12
13
14
VCC
14
13
12
11
10
9
8
VCC
1
2
3
4
5
6
7
GND
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
MVDD
MGND
+VDD
-VSS
AGND
R
RS
SW
C
LS
L
GND
RAUX
GND
LAUX
GND
LREC
LDVD
LT
GND
RT
RDVD
RREC
1
2
DPWR1
DPWR2
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CDOUT
CDIN
CCLK
CS CODEC
CS DSP
PD DSP
INTREQ
CS ROM
PD CODEC
ERR
DZF
DDET
LATCH
DA
ST1
CK
ST2
PROT
SDATA
SBUSY
GND
DATA
BUSY
C208
820P
R212
5.6K
100K
R204
1
C204
C206
2200P
2.2K
R208
R210
2.7K
820P
100K
R203
1
C203
C205
2200P
R209
2.7K
R207
2.2K
R211
5.6K
C207
8
6
5
7
220
R214
100P
C210
C209
0.01
220
1
2
3
4
R213
R307
100K
R304
C308
8200P
R312
4.7K
C306
6800P
R310
10K
100K
R303
C305
1800P
R309
10K
2.2K
R311
4.7K
2200P
C307
5
8
6
7
100P
C310
C309
0.01
2
1
3
4
4
3
R125
8
2
1
100
100
8
7
6
5
4
R126
R127 2.4K
2.4K
R128
10K
R122
+12V
R123 10K
R124 10K
C121 22P
C122 22P
C126
100P
C125
0.01
+12V
+12V
0.33
R450
1/4W
0.1
C451
7
GND
220P
C752
220P
C751
5
41
40
39
0.01
C753
9
1
10
13
TONE
TONE
0.01
C401
0.01
C402
GND
LS
17
16
21
20
18
19
24
25
23
22
CK
N.C.
D
ATA
28
29
26
27
30
VDD
C
14
15
7
6
11
10
8
9
13
12
N.C.
ST
3
2
5
4
1
VSS
16
17
220
R314
5
8
6
R313
220
2.2K
R301
3.3K
R202
3.3K
R201
1
C303
1
C304
10K
R302
12K
R308
23
24
25
26
180
CP44
2
1
9
8
7
10
4
5
3
6
12
13
11
14
15
41
42
34
35
33
36
39
38
40
37
31
30
32
29
28
I/F
MCU
OUTPUT
POR
T
AVDD
AGND
16
21
20
19
18
17
23
22
24
25
26
27
AVSS
GND
GNDC
GNDR
GNDL
LTRE
LBASS3
LBASS2
LBASS1
RTRE
RBASS3
RBASS2
RBASS1
C417 100P
C418 100P
R412 220
180
CP43
180
180
CP41
CP42
C416 100P
C415 100P
C414 22P
C411 22P
C412 22P
C413 22P
6
4
2
12
5
3
2
11
20
29
23
26
4
27
22
+12V
+12V
+12V
16
40
41
40
41
3
4
R175 47K
R174 47K
R172 47K
R173 47K
C160 2.2
C158 2.2
C157 2.2
C155
1
R153
10
C156
1
R154
10
17
C163
0.015
8200P
C161
C165
0.33
10
R155
100P
C154
100P
C153
10
R152
10
R151
2.2
C152
2.2
C151
17
16
15
13
11
9
8
6
C159 2.2
R165 750
0.33
C166
0.015
C164
8200P
C162
10
R156
R158 1K
2200P
C170
39
41
40
7
5
11
9
15
13
8
19
7
5
6
C167 2.2
R157 1K
C168 2.2
C169
2200P
100
R162
100
R160
100
R159
100
R161
100
R164
100
R163
2.2
C180
2.2
C177
2.2
C178
2.2
C179
2.2
C182
2.2
C181
36
35
33
31
34
32
12V
12V
12V
OUT
IN
GND
IN
GND
OUT
IN
GND
OUT
R451
1 1/4W
4.7K
R464
R463
47K
220
R462
R461
220
+2.5V
+3.3V
+5V
+B
+B
+B
1K
R465
0.1
C460
470u6.3
C461
+
0.1
C459
2.2
R454
4.7
R453
0.1
C456
1
R452
0.1
C453
0.1
C457
47u6.3
C458
+
0.1
C454
470u6.3
C455
+
1/4W
10
R455
1W
1/4W
1/4W
2200u16
C452
+
220P
C184
2.7K
R166
1
C183
0.1
C185
470
R170
1000P
C187
0.1
C186
470
R171
1000P
C188
+7.1V
+7.1V
+5.4V
+7.1V
-7.1V
-7.1V
+7.1V
+12V
35
32
36
33
34
31
+B
+B
12
12
7
19
5
18
38
5
13
9
41
1
10
2
4
6
12
3
41
17
+3.3V
+5V
+5V
+5V
+5V
+5V
470
R402
470
R401
+3.3V
+5V
+2.5V
+2.5V
+5V
17
SW
RS
RL
IC14
IC42
10P
C419
1
R168
1
R169
100P
C141
12V
+12V
12V
+B
+12V
B
+12V
12V
12V
+12V
12V
12V
12V
12V
+12V
12V
12V
+12V
CN1
CN5
CN2
CONTROL
SYSTEM
J75
IC21
(1/2)
(2/2)
IC21
RS
LS
IC31
(1/2)
(2/2)
IC31
SW
Cch
IC13 (1/2)
LPF
IC13 (2/2)
D41
D75
D76
ELECTRIC
VOL./ TONE
D44
D43
D42
Q42
Q41
AVR
+2.5V
PROTECTION
+3.3V
AVR
+5.0V
AVR
D151
D152
Q15
Q16
AVR
+7.0V
-7.0V
AVR
IC1,11,13,21,31
: NJM4565MD
IC2
: AK4527-VQ
IC4
: TC7WU04FU
IC5
: AK4110-VF
IC6
: TC7WH123FU
IC12,14
: NJU7311AM
IC15
: M62446FP
IC41
: TC74HC07AF
IC42
: TC74HCT7007AF
IC45
: TA48M05F
IC46
: TA48M033F
IC47
: TA48M025F
IC51
:
IC61
: NJM2279M
Q1
: DTC124EUA or
UN5212
Q15,61
: 2SD1664(Q,R)
Q16,62
: 2SB1132(Q,R)
Q41
: 2SC4081(R,S) or
2SD1819A(Q,R)
Q42
: 2SA1576A(R,S) or
2SB1218A(Q,R)
D1,3
: 1SS301 or
DAN202U or
MA142WK
D2
: 1SS300 or
DAP202U or
MA142WA
D6,51,52,75,76
: MA111
D41
: S1ZB20(4072)
D42,43,61,62
: UDZ5.6B or
D44
: UDZ3.9B or
D151,152 : UDZ7.5B or
HZU5.6(B2)
HZU3.9(B2)
HZU7.5(B2)
Cch
S.W ch
ANALOG 6ch
INPUT SELECTOR
LEVEL
(3.3V-5V)
SHIFTER
D
C
Lch
4/4
X14-A/6
-CN2
CS493253-CLR or
CS493263-CLR
IC42
IC15
IC46
IC47
IC45
(X08-3010-10) (A/3)
IC14
KRF-V4550D/E/-S (3/4)
F
5.0V
8.0V
2.5V
3.3V
5.0V
5.4V
7.1V
12.0V
7.6V
-7.6V
-7.1V
-11.9V
-11.9V
12.0V
-11.9V
12.0V
-11.9V
12.0V
-11.9V
8.0V
8.4V
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.
2SC1845
2SC2878
2SD2395
2SC2785
2SC1740S
UN5219
2SA1576A
2SB1218A
2SD1819A
2SB1132
2SC4081
2SD1757K
2SD1664
DTA124EUA
DTC123JUA
DTC124EUA
2SB1566
TC74HC07AF
NJM4580E
NJM4565M
NJM4565MD
NJM4580ED
DAN202U
DAP202U
DA204U
2SC3906K
