Denon PMA-50, Service Manual

Page: 53 / 93

GND LINE POWER- LINE POWER+ LINE STBY POWER PCM SPDIF DSD Analog Audio L Analog Audio R Audio SW
+5
V2
5
AMP_GN
D
15
0
R
91
0
R
90
5
10
0
3K
3
R
91
2
C
93
5
4700
N
-K
-160
8
C
93
7
1000
N
-K
-160
8
C
94
6
10000
N
-K
-160
8
C
94
8
100
N
-K
C
95
0
100
N
-K
C
95
2
100
N
-K
C
95
4
100
N
-K
C
95
6
100
N
-K
C
96
3
1000
N
-K
-160
8
C
96
5
1000
N
-K
-160
8
C
96
7
100
N
-K
C
96
9
100
N
-K
C
97
1
100
N
-K
AMP_GN
D
C
91
2
10
N
-K
C
91
4
10
N
-K
75
R
97
0
C
92
1
100
N
-K
C
92
8
100
N
-K
C
93
1
1000
N
-K
-160
8
C
93
3
1000
N
-K
-160
8
1 R926
AMP_GND
+1V8
+1V8R
+3V3R
+3V3S
+3V3
R908 150
75 R967
+3V3R
+3V3
+3V3S
DC_PRT1
CH7_REF0
CH7_REF1
CH7_REF2
CH5_REF1
CH5_REF2
CH4_REF1
CH4_REF0
+1V8R
+1V8
CH4_5_WS
CH4_5_SCK
AUX_R
AUX_L
HP_DET
SW_MUTE
DGND
CSR_BRIDGE
CSR_SPI_CK
DGND
CSR_SPI_DI
+3.3CPU
AMP_GND AMP_GND DGND
+1V8C_
AMP_GND
AGND
+1V8S
1 R927
C906 100N-K
C905 100N-K
+3V3
+1V8C
+1V8S
+3V3
3K3
R923
+1
V8
C
_
R
90
4
0
15
0
R
91
1
+3V3
L90
0
0.
33u
H
R
90
6
3K
3
C
90
9
12
P
-J
AMP_GND
R907 150
R909 150
75 R969
C1021
33P
75
R968
C
102
7
33
P
33
P
C
102
6
C
94
0
1000
N
-K
-160
8
C
93
9
1000
N
-K
-160
8
C
93
6
1000
N
-K
-160
8
C
93
8
1000
N
-K
-160
8
C
94
1
1000
N
-K
-160
8
AMP_GND
C
94
4
1000
N
-K
-160
8
C
94
7
100
N
-K
C
94
9
100
N
-K
C
94
5
1000
N
-K
-160
8
C
95
1
100
N
-K
C
95
3
100
N
-K
C
95
5
100
N
-K
C
102
5
100
N
DGND
DC_PRT2
+3V3
CH5_REF0
CH4_REF2
AGND
AGND
CH4_5_SD
DGND
CSR_INTRT
HP_MUTE
SPK_ON
AGND
CSR_SPI_CS
CSR_RESET
CSR_SPI_DO
C
95
9
1000
N
-K
-160
8
C
96
1
1000
N
-K
-160
8
C
95
7
4700
N
-K
-160
8
C
95
8
1000
N
-K
-160
8
C
96
0
1000
N
-K
-160
8
C
96
2
1000
N
-K
-160
8
AMP_GND
C
96
6
100
N
-K
C
96
8
100
N
-K
C
97
0
100
N
-K
C
96
4
1000
N
-K
-160
8
C
97
2
100
N
-K
AMP_GND
To
O
ut
pu
t St
age
C1014
10P
R960
75
22
R
91
8
L9007
BD221T
844KH
Z
C
91
0
12
P
-J
75
R
97
2
75
R
97
1
C
91
3
10
N
-K
C
91
5
10
N
-K
C
91
8
100
N
-K
-100
5
C
91
7
100
N
-K
-100
5
C
91
6
100
N
-K
-100
5
+3
V3
C
92
0
1000
N
-K
-160
8
H/P
SHEE
T
To
SW/HP
Output
Stag
e
C
92
6
100
N
-K
C
92
7
100
N
-K
C
92
2
1000
N
-K
C
92
3
1000
N
-K
C
92
4
1000
N
-K
C
92
5
1000
N
-K
C
92
9
100
N
-K
C
93
0
1000
N
-K
-160
8
C
93
2
100
N
-K
C
93
4
100
N
-K
To
F
eedba
ck
P
ro
ce
ss
or
CH2_PWM0
CH2_PWM2
PWMCKO
C108_3
CH2_REF1
CH2_REF2
CH2_FB1
CH2_FB0
CH3_FB0
CH3_REF1
33 R919
33 R920
AMP_GND
OPEN R924
C904 NM
C907 1000N-K-1608
0 R914
0
R913
AMP_GND
CH4_5_WS
CH4_5_SCK
AUX_R
AUX_L
HP_DET
SW_MUTE
CSR_BRIDGE
CSR_SPI_CK
CSR_SPI_CS
CSR_SPI_DO
CSR_SPI_DI
+3.3CPU.
R9101
1K
CSR COMMENT
AMP_GND
C1018 0
R966 0
R974 0 R961 0 R962 0
+1V8C
CH3_PWM2
CH3_PWM0
C108_2
CH3_FB1
CH3_REF2
CH2_REF0
CH3_REF0
OPEN R917
OPEN R916
33 R922
33 R921
OPEN R925
A
GND
B
VCC
Y
C911 1000N-K-1608
33
P
C
102
8
33P
C1023
33P
C1022
0
R915
C
94
2
1000
N
-K
-160
8
C
94
3
1000
N
-K
-160
8
AGND
AGND
CH4_5_SD
SPK_ON
HP_MUTE
CSR_INTRT
AGND
CSR_RESET
C1024 100N
AMP_GND
FROM MAIN B'D
R963 0 R965 0
C1019 0
C1020
0
AMP_GND
1
2
3
4 5
6
7
8
OPEN
IC900
1A
3Y
2A
GND 2Y
3A
1Y
VCC
C903 NM
AMP MODE
POWER SHEET
1 2 3 4
N900
C
90
2
100
N
-K
1 2 3 4
N901
R
97
3
15
0
C
91
9
100
N
-K
-100
5
C
90
8
10
N
-K
7
1Y
8
Vc
c
6
3A
1
1A
3
2A
5
2Y
2
3Y
4
G
ND
IC907
NC
7NZ
17
K
8X
A
GND
B
VCC
Y
1
2
3
4 5
6
7
8
1A
3Y
2A
GND 2Y
3A
1Y
VCC
OPEN
IC901
POWER
POWER
172
CH
2_
R
EF
1
171
CH
2_
R
EF
2
169
CH
2_
FB
1
167
C
23
G
ND
165
CH
3_
FB
1
163
CH
3_
R
EF
2
161
C
3G
ND
159
CH
3_
R
EF
0
157
C
KI
G
ND2
155
C
KI
P3
V3
153
C
KI
G
ND1
154
MC
K_
IN
152
C
KI
P1
V8
150
CH
4_
R
EF
0
148
C
4G
ND
146
CH
4_
R
EF
2
144
CH
4_
FB
1
142
C
45
G
ND
140
CH
5_
FB
1
138
CH
5_
R
EF
2
48
CH
_0_1_A
UD
IO
_S
CK
49
CH
_0_1_A
UD
IO
_S
D
50
CH
_0_1_A
UD
IO
_W
S
51
CH
_2_3_A
UD
IO
_S
CK
52
CH
_2_3_A
UD
IO
_S
D
54
PW
M
_M
O
DE
56
G
PIO
_1
58
G
ND
60
G
PIO
_2
62
BR
ID
G
E_
O
N
64
MC
K_SE
L
66
G
ND
67
P3V
3
68
G
PIO
_4
69
G
PIO
_5
70
TES
T
71
SP
I_
CK
73
SP
I_
D
AT
A
75
G
ND
77
G
PIO
_6
79
VP
D
81
CH
_4_5_A
UD
IO
_S
D
83
CH
_6_7_A
UD
IO
_W
S
85
CH
_6_7_A
UD
IO
_S
CK
164
CH
3_
FB
0
166
C
23
P1
V8
168
C
23
P3
V3
170
CH
2_
FB
0
156
MC
K_
IN
_BA
R
158
C
3P1V
8
160
C
3P3V
3
162
CH
3_
R
EF
1
149
C
4P3V
3
151
C
4P1V
8
141
C
45
P1
V8
143
C
45
P3
V3
145
CH
4_
FB
0
147
CH
4_
R
EF
1
137
CH
5_
R
EF
1
139
CH
5_
FB
0
53
CH
_2_3_A
UD
IO
_W
S
55
G
PIO
_0
57
P3V
3
59
P1V
8
61
IN
TE
RRU
PT
63
R
ESE
T_BA
R
65
G
PIO
_3
72
SP
I_
CS
74
P1V
8
76
P3V
3
78
G
PIO
_7
80
CH
_4_5_A
UD
IO
_W
S
82
CH
_4_5_A
UD
IO
_S
CK
84
CH
_6_7_A
UD
IO
_S
D
42 CH0_PWM2
43 CH0_PWM1
41 CH1_PWM0
40 CH1_PWM1
39 CH1_PWM2
37 GND
35 CH2_PWM1
33 CH3_PWM0
31 CH3_PWM2
29 GND
27 C0P1V8
25 C0P3V3
23 CH0_REF1
24 C0GND
21 CH0_FB0
22 CH0_REF2
20 CH0_FB1
18 C01GND
16 CH1_FB1
14 CH1_REF2
12 C1GND
10 CH1_REF0
8 GND
6 CKO0P3V3
4 CKO0GND
2 MCK0_OUT_BAR
3 CKO0P1V8
1 MCK0_OUT
90 CH7_PWM1
91 CH7_PWM2
92 CH6_PWM0
93 CH6_PWM1
94 CH6_PWM2
96 GND
98 CH5_PWM1
100 CH4_PWM0
102 CH4_PWM2
104 GND
106 C7P1V8
108 C7P3V3
109 C7GND
110 CH7_REF1
111 CH7_REF2
112 CH7_FB0
113 CH7_FB1
115 C67GND
117 CH6_FB1
119 CH6_REF2
121 C6GND
123 CH6_REF0
125 GND
127 CKO1P3V3
128 PWMCK1_OUT
129 CKO1GND
130 CKO1P1V8
38 P3V3
30 P3V3
32 CH3_PWM1
34 CH2_PWM2
36 CH2_PWM0
26 CH0_REF0
28 P1V8
15 CH1_FB0
17 C01P1V8
19 C01P3V3
7 P1V8
9 C1P1V8
11 C1P3V3
13 CH1_REF1
5 PWMCK0_OUT
95 P3V3
97 CH5_PWM0
99 CH5_PWM2
101 CH4_PWM1
103 P3V3
105 P1V8
107 CH7_REF0
114 C67P1V8
116 C67P3V3
118 CH6_FB0
120 CH6_REF1
122 C6P3V3
124 C6P1V8
126 P1V8
131 MCK1_OUT_BAR
176
C
2P1V
8
175
CH
2_
R
EF
0
174
C
2P3V
3
173
C
2G
ND
132
MCK1_OUT
136
C
5G
ND
135
C
5P3V
3
134
CH
5_
R
EF
0
133
C
5P1V
8
89
CH7_PWM0
87
G
ND
88
P3V
3
86
P1V
8
44
CH0_PWM0
47
P1V
8
46
G
ND
45
P3V
3
CSRA6601
IC903
PMA-50
D AMP - Modulator Part
7B
TO B7
8B
TO B8
9B
TO B9
0C
TO C0
C3
TO 3C
C4
TO 4C
C5
TO 5C
CP900
TO CP502
SCHEMATIC DIAGRAMS (2/2) SCHEMATIC DIAGRAMS (5/11)
AMP_D_AMP
53
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
A
B
C
D
E
F
G
H
J
K
L
M
A
B
C
D
E
F
G
H
J
K
L
M
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16