![NAD T775 Service Manual Download Page 69](http://html.mh-extra.com/html/nad/t775/t775_service-manual_703181069.webp)
67
MCU
1206
0 OHM FOR CE
R2017 & R2018
R2015 & R2016
N.I. FOR CE
Component in box are N.I. for T765 (except
R2045 which is 0 ohm.
0 ohm for T765
1
P
9_5
2
P
9_3
3
P
9_2
4
P
9_1
5
P
9_0
6
CN
V
S
S
7
P
8_7
8
P
8_6
9
RE
S
E
T
10
XO
U
T
11
VS
S
12
XI
N
13
VC
C
14
P
8_5
15
P
8_4
16
P
8_3
17
P
8_2
18
P
8_1
19
P
8_0
20
P
7_7
21
P7_6
22
P7_5
23
P7_4
24
P7_3
25
P7_2
26
P7_1
27
P7_0
28
P6_7
29
P6_6
30
P6_5
31
P6_4
32
P3_7
33
P3_6
34
P3_5
35
P3_4
36
P3_3
37
P3_2
38
P3_1
39
P3_0
40
P6_3
41
P
6_2
42
P
6_1
43
P
6_0
44
P
2_7
45
P
2_6
46
P
2_5
47
P
2_4
48
P
2_3
49
P
2_2
50
P
2_1
51
P
2_0
52
P
1_7
53
P
1_6
54
P
1_5
55
P
1_4
56
P
1_3
57
P
1_2
58
P
1_1
59
P
1_0
60
P
0_7
61 P0_6
62 P0_5
63 P0_4
64 P0_3
65 P0_2
66 P0_1
67 P0_0
68 P10_7
69 P10_6
70 P10_5
71 P10_4
72 P10_3
73 P10_2
74 P10_1
75 AVSS
76 P10_0
77 VREF
78 AVCC
79 P9_7
80 P9_6
U2001
M30280FCHP-U3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J2002A
To Keyboard J2002B
R2001
100k
C2001
22u
16V
1
2
J2012A
FAILSAFE
1
PW
2
GN
D
3
4
5
VCC
U2006
AME8530
R2002
10k
C2002
0.1u
V+
NC
OUT
GND
X2001
N.I.
C2017
1000p
R2003
0
C2003
0.1u
C2004
47u
16V
C2005
47u
16V
C2006
0.1u
R2004
10k
1
2
3
4
5
6
7
8
U2002
AT24C16
C2007
0.1u
C2008
1000u
10V
R2005
N.I.
R2006
N.I.
1
2
3
4
5
6
7
8
9
10
J2013A
JTAG Connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
J2003A
To Mainboard J2003B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J2001A
To Right Amp J2001B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
J2011A
To Conn#4 J2011B
L2001 10uH
1 1A
2 1B
3 1Y
4 2A
5 2B
6 2Y
7 GND
8
3Y
9
3A
10
3B
11
4Y
12
4A
13
4B
14
VCC
U2005
74HC132
C2009
10u
16V
C2010
0.1u
R2007
100k
R2008
N.I.
R2010
0
D2001
LL4148
C2018
0.1u
50V
R2011
1k
R2009
10k
R2013 4.7k
R2014 4.7k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
J2009A
To Conn#4 J2009B
R2017 N.I.
R2018 N.I.
R2015
0
R2016
0
R2012
0
1
2
J2014A
V+
NC
OUT
GND
X2001A
20MHz
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
J2007A
To Conn#2 J2007B
R2023
10k
R2020
10k
R2021
10k
R2022
4.7k
R2019
10k
R2025
10k
C2019
0.1u
R2024
0
1
2
3
4
5
6
J2005A
To Front Input J2005B
1
2
3
4
5
6
J2006A
To Front Input J2006B
1
2
3
4
J2008A
TO FRONT INPUT J2008B
E
C
B
Q2001
DTA114EKA
R2031
2.2k
E
C
B
Q2002
DTA114EKA
R2032
2.2k
R2034
2.2k
E
C
B
Q2004
DTA114EKA
R2033
2.2k
E
C
B
Q2003
DTA114EKA
1
2
3
4
5
6
J2015A
ISP Header
R2041
0
C2029
47u
16V
C2030
0.1u
1 1A
2 1B
3 1Y
4 2A
5 2B
6 2Y
7 GND
8
3Y
9
3A
10
3B
11
4Y
12
4A
13
4B
14
VCC
U2009
74HC00
R2039 N.I.
R2040 N.I.
C2025
47u
16V
C2026
0.1u
C2028
0.1u
C2027
47u
16V
R2037
2.2k
R2038
2.2k
R2036
2.2k
R2035
2.2k
C2024
47u
16V
C2023
0.1u
C2022
0.1u
C2021
47u
16V
GN
D
OUT
IN
U2008
LM1117 - 3.3
1
PD
3
2
PD
4
3
GN
D3
4
V
CC4
5
GN
D5
6
V
CC6
7
PB
6
8
PB
7
9
PD5
10
PD6
11
PD7
12
PB0
13
PB1
14
PB2
15
PB3
16
PB4
17
PB
5
18
AVC
C
19
AD
C
6
20
AR
EF
21
GN
D2
1
22
AD
C
7
23
PC
0
24
PC
1
25
PC2
26
PC3
27
PC4
28
PC5
29
PC6
30
PD0
31
PD1
32
PD2
U2007
ATmega48
C2031
47u
16V
C2032
0.1u
R2043
10k
C2020
1u
50V
R2027
10k
E
C
B
Q2007
T3904
E
C
B
Q2012
DTC114EKA
E
C
B
Q2008
DTC114EKA
E
C
B
Q2009
DTC114EKA
E
C
B
Q2010
DTC114EKA
E
C
B
Q2011
DTC114EKA
R2028
4.7k
R2044
4.7k
R2026 1k
R2042
0
R2045 N.I.
C2033
0.1u
(Place near J2007A)
DGND
+5V_K
+5V_K
+5V_K
DGND
DGND
DGND
+5V_K
+5V_K
DGND
DGND
DGND
DGND
+5V_K
DGND
MCU
IR
_
F
IR
_
F
IR
_
R
EN02
EN01
EN01
EN02
VFD
_
C
L
K
V
F
D_
DA
T
A
VFD
_
C
S
4094_S
T
B
KEY
00
KEY
01
KEY
02
KEY
0
3
RD
S
_
CL
K
RD
S
_
D
A
T
A
D
A
B/XM
_
R
XD
+5V_K
CE
S
P
I0_CL
K_5V
S
P
I0_S
CS
_5V
IN
T
_5V
+5V_K
DGND
EE_S
C
L
EE_S
D
A
+5V_K
DGND
DGND
+5V_K
+39V
AC4.8V1 AC4.8V2
TH
M
_
P
R
O
+12V_D
4094(
1)
_S
T
B
DGND
+5V_K
VFD
_
C
S
VFD
_
C
L
K
V
F
D_
DA
T
A
EN01
EN02
4094_S
T
B
KEY
00
KEY
01
KEY
02
KEY
03
IR
_
F
DGN
D
+5
V
_
K
+
39V
A
C
4.
8V
1
A
C
4.
8V
2
+
12V
_D
SC
_
1
SC
_
2
TH
M
_
P
R
O
OV
LD
_
P
R
O
4094(
1)
_S
T
B
4094(
1)
_D
A
T
A
_
A
M
P
4094(
1)
_CL
K_A
M
P
DGN
D
DGN
D
+5
V
_
K
+12V_D +5V_K
DGND
DGND
+5V_K
DGND
+5V_K
IR_F
IR_F
+5V_K
DGND
TH
M
_
P
R
O
AU
T
O
/O
FF
15205_D
A
T
A
_
A
15205_D
A
T
A
_
B
P
LL_
D
I
S
P
I0_ENA
_5V
VFD
_
R
S
T
4094(6)_STB
4094(5)_STB
4094(1)_DATA
4094(1)_CLK
STEREO
TUNED
PLL_DO
PLL_DI
RDS_CLK
RDS_DATA
STEREO
TUNED
PLL_DO
PLL_DI
RDS_CLK
RDS_DATA
+5V_V
S_CLIP_IND
AUTO/OFF
232_TXD
232_RXD
DAB/XM_TXD
VFD_CLK
VFD_CS
VFD_DATA
PLL_CLK
STEREO
TUNED
PLL_DO
RTS1
CLK1
232_RXD
232_TXD
PG10_SDA
PG10_SCL
S_CLIP_IND
HP_DET
POWER_ON
MIC_BIAS
KEY03
KEY02
KEY01
KEY00
TRIG_OUT_3
TRIG_OUT_2
TRIG_OUT_1
TRIG_IN
SPI0_SOMI_5V
SPI0_SIMO_5V
DGND
+5V_K
+13V
P
O
WE
R
_
D
O
WN
VFD
_
R
S
T
INT_5V
SPI0_ENA_5V
SPI0_SCS_5V
SPI0_CLK_5V
SPI0_SIMO_5V
AGND
DGND
DGND
+5V_K
+5V_K
DGND_V
VFD
_
R
S
T
+5V_K
+5V_K
+5V_K
RTS1
CLK1
232_RXD
CE
DGND
232_TXD
RTS1
+5V_K
CLK1
232_RXD
CE
DGND
RESET
CNVSS
232_TXD
+5V_K
DGND
+39V
+12V_D +12V_A -12V_A
AC4.8V1
AC4.8V2
+5V_K
DGND
+13V
4094(6)_STB
4094(5)_STB
4094(1)_DATA
4094(1)_CLK
V6_OPT
DAB_IN
SPI0_SIMO_5V
DSP_SPI0_SOMI_5V
SPI0_CLK_5V
SPI0_SCS_5V
SPI0_ENA_5V
INT_5V
V6_V
V6_Y
V6_C
DGND_V
HP_L
HP_R
AGND
AGND
MIC_BIAS
HP_DET
+12V_A
-12V_A
78211/PLL_CE
XM_PWR
XM_PWR
4094(2)_STB
4094(2)_STB
4094(3)_STB
4094(3)_STB
ANT_REV
L
IN
K
AC
T
IVE
ANT_REV
LINKACTIVE
ANT_REV
LINKACTIVE
DAB/XM_TXD
DAB/XM_RXD
DAB/XM_TXD
DAB/XM_RXD
DAB/XM_TXD
DAB/XM_RXD
15205_DATA_A
78211/PLL_CE
15205_DATA_B
PLL_CLK
4094(4)_STB
4094(4)_STB
PLL_CLK
15205_DATA_B
78211/PLL_CE
15205_DATA_A
XM_TXD
XM_RXD
+39V
AC4.8V2
AC4.8V1
+5V_K
+5V_K
+5V_K
+5V_K
DGND
DGND
DGND
DGND
+15V
+12V_A
AGND
-12V_A
+15V
+
15V
PG10_SCL
PG10_SDA
+12V_D
+15V
DGND
$$$32086
$$$32324
DAB_IN
SC_1
SC_2
S_CLIP_IND
AUTO/OFF
232_TXD
232_RXD
XM_PWR
TRIG_IN
TRIG_OUT_2
TRIG_OUT_1
DGND
TRIG_OUT_3
+5V_V
+5V_K
+12V_D
+12V_D
+13V
+13V
TRIG_IN
TRIG_OUT_1
TRIG_OUT_2
TRIG_OUT_3
POWER_ON
IR_O_1
IR_O_2
IR_O_2
POWER_ON
DGND
+5V_K
+5V_K
+5V_K
+5V_K
+5V_K
DGND
IR_R
IR_R
IR_R_MIX
V
6_O
P
T
+
5
V_
V6
HP
_D
ET
MI
C
_
B
IA
S
+
12V
_A
-12V
_A
V
6_Y
V
6_C
V
6_V
DGND_V
AGND
DGN
D_
V
DGN
D_
V
DGN
D_
V
+5V_V
+5V_V
+5V_V
+5V_V
4094(
1)
_D
A
T
A
4094(
1)
_CL
K
4094(
2)
_S
T
B
4094(
4)
_S
T
B
4094(
1)
_S
T
B
4094(
6)
_S
T
B
4094(
5)
_S
T
B
4094(3)_STB
4094_STB
PG10_SCL
PG10_SDA
HP
_R
AG
N
D
HP
_L
AG
N
D
DGND
+5V_K
DGND
+5V_K
+5V_K
DGND
+5V_K
DGND
4094(1)_CLK
4094(1)_DATA
4094(1)_CLK_VOL
4094(1)_CLK_AMP
4094(1)_DATA_AMP
4094(1)_DATA_VOL
4094(1)_CLK_AMP
4094(1)_DATA_AMP
4094(1)_CLK_VOL
4094(1)_DATA_VOL
4094(1)_CLK_VOL
4094(1)_DATA_VOL
M_
R
S
T
O
S
C_CL
K
DSP_SPI0_SOMI_5V
P80
IPOD_TXD_3V3
IPOD_RXD_3V3
DGND
RESET
SPI0_SIMO_5V
SPI0_CLK_5V
+5V_K
ATMEGA_SOMI
DGND
DGND
SPI0_SOMI_5V
SPI0_SCS_5V
P80
ATMEGA_SOMI
ATMEGA_SOMI
DSP_SPI0_SOMI_5V
P80
SPI0_SIMO_5V
DGND
SPI0_CLK_5V
DGND
+5V_K
OSC_CLK
CNVSS
ATMEGA_RST
M_RST
DGND
DGND
DGND
DGND
+5V_K
+5V_K
IPOD_RXD_3V3
IPOD_RXD_5V
DGND
+3V3_K
+3V3_K
DGND
IPOD_TXD_5V
IPOD_TXD_3V3
DGND
+5V_K
+5V_K
DGND
DGND
DGND
DGND
DGND
DGND
+3V3_K
+5V_K
ATMEGA_RST
+5V_K
DGND
DGND
DGND
DGND
DGND
DGND
+5V_K
DGND
+5V_K
Summary of Contents for T775
Page 8: ...8 WIRING DIAGRAM ...
Page 10: ...10 BLOCK DIAGRAM ...
Page 21: ...21 DSP BOARD COPPER SIDE ...
Page 22: ...22 DSP BOARD COMPONENT SIDE ...
Page 23: ...23 KEY BOARD COMPONENT SIDE KEY BOARD COPPER SIDE ...
Page 24: ...24 PRE OUT BOARD COPPER SIDE ...
Page 25: ...25 PRE OUT BOARD COMPONENT SIDE ...
Page 26: ...26 VOLUME BOARD COPPER SIDE ...
Page 27: ...27 VOLUME BOARD COMPONENT SIDE ...
Page 28: ...28 F INPUT BOARD COPPER SIDE F INPUT BOARD COMPONENT SIDE ...
Page 29: ...29 MAIN BOARD COMPONENT SIDE ...
Page 30: ...30 TRIGGER BOARD COMPONENT SIDE TRIGGER BOARD COPPER SIDE ...
Page 31: ...31 COMPONENT BOARD COMPONENT SIDE COMPONENT BOARD COPPER SIDE ...
Page 32: ...32 VIDEO BOARD COPPER SIDE VIDEO BOARD COMPONENT SIDE ...
Page 33: ...33 HDMI BOARD COPPER SIDE ...
Page 34: ...34 HDMI BOARD COMPONENT SIDE ...
Page 35: ...35 PSU ISC BOARD COMONENT SIDE PSU ISC BOARD COPPER SIDE ...
Page 36: ...36 CONNECTOR 1 BOARD COMPONENT SIDE CONNECTOR 1 BOARD COPPER SIDE ...
Page 37: ...37 MCU BOARD COMPONENT SIDE MCU BOARD COPPER SIDE ...
Page 38: ...38 PSU SECONDARY BOARD COMPONENT SIDE PSU STD BOARD COMPONENT SIDE ...
Page 40: ...40 CONNECTOR 2 BOARD COMPONENT SIDE ...
Page 96: ...94 ATMEGA48 20 U2007 AT24C16 U2002 ...
Page 98: ...96 DSP D708E0001BRFP266 U1001 SST39VF800 U1004 ...
Page 99: ...97 K4S641632K U1003 74HC251D U1005 ...
Page 100: ...98 74HCU04D U1018 U1019 SN74LVC245 U1010 U1022 TL5001CD U1011 ...
Page 101: ...99 SN74HCT245 U1009 SN74LVC257AD U1033 U1035 U1036 ...
Page 103: ...101 TPS3103 U1021 CS8416 U1002 ...
Page 104: ...102 BU9450 U1032 PCM1791A U1012 1016 ...
Page 105: ...103 HDMI XC9572XL U20 CM1213 8 U2 U11 U16 U24 U32 D2308 in Trigger ...
Page 106: ...104 PCA9517 U5 PCF8574 U10 U201 ...
Page 107: ...105 PI3B16233 U9 U13 SN74AHCT244 U200 ...
Page 108: ...106 AD8061 U18 U22 U26 AD8063 U17 U21 U25 U27 U29 U30 ...
Page 109: ...107 MC141585DW U19 ...
Page 110: ...108 TMDS341 U15 U23 ...
Page 111: ...109 ADV7320 U28 ...
Page 112: ...110 ADV7403 U12 AD9388 U14 ...
Page 113: ...111 AD9389B U31 LM2575 VR3 VR4 ...
Page 114: ...112 LM1086 VR200 Power Amp L AS358 U5802 U5401 in AMP R ...
Page 116: ...114 Component 74HC4052D U4002 4003 LC78211 U6009 ...
Page 117: ...115 Volume TPA6120A2DWP U6008 ...
Page 118: ...116 R2S15205FP U6001 6002 ...
Page 119: ...117 Trigger 74HC86D U2303 ST232BDR U2301 TPS2011A U2302 ...
Page 120: ...EXPLODED VIEW A ...
Page 121: ...119 EXPLODED VIEW B ...
Page 126: ...Enlarged in detail on next page 124 ...
Page 129: ...125 SERVICE MANUAL T 775 Surround Sound Receiver NAD ELECTRONICS LTD LONDON ...