Marantz NR1506 /K1B, Service Manual

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SCHEMATIC DIAGRAMS (6/23)
06-CPU LEVEL CHG
ANALOG AUDIO DIGITAL AUDIO TMDS SIGNAL VIDEO SIGANL GND LINE POWER- LINE POWER+ LINE COMPONENT (Y)
STBY
3.
3V
C
122
7
100
N
-K
VEXP
_O
E
HPD
6
VI
N
_B
RXD_MI232
O
SWM3.3
V
RXD
_M
I232
O
CEC
_O
U
T
C
EC
_C
O
M
CEC
_I
N
VEXP
_DA
TA
VEXP
_S
TB
TH
ER
M
AL_
B
R
113
6
12
K
TH
ER
M
AL_
F
H
/P
_DE
T/
M
IC
_DE
T
SW
M
3.
3V
D
G
N
D
VI
N
_B
C
121
9
10
N
-K
R
111
5
10
0
DCDE
T3
R
111
6
O
PE
N
R
113
8
O
PE
N
R
111
7
O
PE
N
R
113
9
O
PE
N
R
111
9
22
K-
160
8
HPD
6
HPD
3
C
122
2
10
N
-K
R
112
0
10
0
HPD
1
HPD
4
R
114
1
O
PE
N
R
112
3
120
K
C
122
4
10
N
-K
R
112
4
10
0
C
122
5
10
N
-K
C
122
6
10
N
-K
VEXP
_DA
TA
HPD
1
HPD
3
R
113
4
3K
3
VEXP
_S
TB
R
109
2
33
R
109
3
33
DC
_P
R
O
T
AS
O
_P
R
O
T
DCDE
T3
DC
_PR
O
T
DC
_D
ET
/AS
O
THER
M
AL
D
ET
A
THER
M
AL
D
ET
E
THER
M
AL
D
ET
F
R
110
0
22
K
H
/P
_D
ET
TH
ER
M
AL_
F
TX
D
_M
O
232I
.
H
/P
_D
ET.
O
PE
N
R
110
3
H
/P
_DE
T/
M
IC
_DE
T
TH
E
R
MAL_E
R
110
4
22
K
O
PE
N
R
110
7
TH
E
R
MAL_A
AS
O
DE
T
AS
O
_P
R
O
T
R
110
8
22
K
M
IC
_DE
T
R
112
7
10
0
MI
C
_D
ET
.
R
111
0
10
K
H
/P
_DE
T
R
112
6
4K
7
H
/P
_D
ET.
THER
M
AL
D
ET
E
THER
M
AL
D
ET
B
R1111 2M2
CEC_OUT
DGND
CEC_IN
HPD
5
R
113
0
4K
7
VI
N
_A
C
121
7
220
P-
K
R1133
220K
C1212
OPEN
R1094
10K
C
122
8
100
N
-K
STBY
5V
VEXP
_O
E
D
G
N
D
C
121
5
100
N
-K
TXD_MO232
I
OPEN
R1096
R1091 4K7
TX
D
_M
O
232
I
VEXP
_O
E
VEXP
_C
LK
TH
ER
M
AL_
E
TH
ER
M
AL_
A
2S
C
305
2
Q
103
5
C
121
8
10
N
-K
R
111
2
100
K
R
111
3
10
0
C
121
3
100
N
-K
M3
.3
V
DC
_D
ET
/AS
O
C
121
4
100
N
-K
R
111
4
100
K
VI
N
_A
R1150
OPEN
R
113
7
18
K
DCDE
T4
OPEN
R1152
3K9
R1151
C
122
1
10
N
-K
R
111
8
10
0
SWM3.3V
R
114
0
O
PE
N
R
112
1
120
K
HPD
2
C
122
3
10
N
-K
R
112
2
10
0
HPD
5
R
114
2
O
PE
N
R
112
5
22
K
VEXP
_S
TB
VEXP
_C
LK
Q
105
8
2S
C
305
2
HPD
4
HPD
2
R
113
5
100
K
R1098
100K
C
121
6
100
N
-K
R
109
7
1K
2
TO CPU
DCDE
T4
Q
103
8
IS
A1530
AC
1
R1147
3K3
22
K
R
109
9
2S
C
305
2
Q
102
7
THER
M
AL
D
ET
B
AS
O
DE
T
M
IC
_DE
T.
O
PE
N
R
110
1
Q
102
8
O
PE
N
R
XD
_MI232
O
.
MI
C
_D
ET
R1148
3K3
R
110
2
22
K
2S
C
305
2
Q
102
9
O
PE
N
R
110
5
2S
C
305
2
Q
103
0
TH
E
R
MAL_B
R
110
6
22
K
2S
C
305
2
Q
103
1
R
110
9
4K
7
Q
103
3
R
T1
N
141
C
Q
104
9
R
T1
N
141
C
R
112
8
10
0
Q
105
0
R
T1
N
141
C
THER
M
AL
D
ET
F
THER
M
AL
D
ET
A
M3.3V
SWM3.3V
STBY3.3V
CEC_COM
R
113
1
47
K
R
113
2
27
K
Q1057
2SD2114K
CEC3.3V
R1095
OPEN
3K9
R1149
10
K
R
114
5
10
K
R
114
6
2S
C
305
2
Q
103
6
C
122
0
O
PE
N
SWM3.3V
STBY5V
DGND
CEC3.3V
FROM
D.SUPPLY
D1004
LBAS16HT1G
Q
105
9
2S
C
305
2
14 13 12
3 2 1
11 10 9 8
7 6 5 4
U
100
9
TC
74
VHC
08
FT
1A 1B 1Y 2A 2B 2Y G
ND
VCC
4B 4A 4Y 3B 3A 3Y
Q
103
7
IS
A1530
AC
1
2S
C
305
2
Q
102
6
TO DIGITAL CNT
2S
C
305
2
Q
103
2
Q
103
4
R
T1
N
141
C
TO
MN864788
CPU LEVEL CHG
TO
MN864788A
4A
TO A4
1B
TO B1
7B
TO B7
C1
TO 1C
C2
TO 2C
102
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