NAD T 775 Service Manual page 69

MCU
+5V_K +5V_K
R2032 R2034
2.2k 2.2k
4094(1)_CLK_AMP 4094(1)_DATA_AMP
E E
B B
4094(1)_CLK DTA114EKA 4094(1)_DATA DTA114EKA
Q2002 Q2004
-12V_A +12V_A +5V_V
C C
DGND DGND
+5V_K +5V_K
R2031 R2033
2.2k 2.2k
4094(1)_CLK_VOL 4094(1)_DATA_VOL
E E
B B
DTA114EKA DTA114EKA
Q2001 Q2003
C C
DGND DGND
DSP_SPI0_SOMI_5V
J2009A
To Conn#4 J2009B
1
2 4094(6)_STB
3 4094(5)_STB
4 4094(1)_DATA
5 4094(1)_CLK
6 V6_OPT
7 DAB_IN
8 SPI0_SIMO_5V
9 DSP_SPI0_SOMI_5V
10 SPI0_CLK_5V
11 SPI0_SCS_5V
12 SPI0_ENA_5V
13 INT_5V
14
15
16 V6_V
17 V6_Y
18 V6_C
AC4.8V2 AC4.8V1 +5V_K +39V +15V +12V_D +12V_A -12V_A +5V_V
19 DGND_V
20 HP_L
J2003A
21 HP_R
To Mainboard J2003B
22 AGND
1 AC4.8V2
23
2 AC4.8V1
24
3 +5V_K
25
4 +5V_K
26 IPOD_TXD_3V3
5 +5V_K
27 IPOD_RXD_3V3
6 +5V_K
28
7 DGND
8 DGND
AGND
9 DGND
10 DGND
11 +39V
12 +12V_D
13
14 +15V
15 +12V_A
16 AGND
17 -12V_A +5V_K +5V_K +5V_K +5V_K
18 +5V_V
19
20
R2020 R2021 R2022
21 10k 10k 4.7k
22
23 AGND J2011A
DGND
24 To Conn#4 J2011B
25 1 XM_TXD
26 2 XM_RXD
27 3 15205_DATA_A
28 4 78211/PLL_CE
5 15205_DATA_B
6 PLL_CLK
7 4094(4)_STB
8 STEREO
9 TUNED
10 PLL_DO
11 PLL_DI
12 RDS_CLK
13 RDS_DATA
14
15 4094(2)_STB
16 4094(3)_STB
17 PG10_SCL
18 PG10_SDA
19 ANT_REV
20 LINKACTIVE
21 DAB/XM_TXD
22 DAB/XM_RXD
23 4094(1)_CLK_VOL 4094(1)_CLK_VOL
24 4094(1)_DATA_VOL 4094(1)_DATA_VOL
25 +5V_K
26 +5V_K
27 DGND
28 DGND
DGND
J2005A J2006A J2008A
To Front Input J2005B To Front Input J2006B TO FRONT INPUT J2008B
L2001 10uH
AGND
DGND_V
+5V_K
R2025
10k
HP_DET
MIC_BIAS
4094(6)_STB
4094(5)_STB
4094(1)_DATA
4094(1)_CLK
SPI0_SIMO_5V
SPI0_CLK_5V
SPI0_SCS_5V
SPI0_ENA_5V
INT_5V
+5V_K
R2005
N.I.
DGND_V
R2006
N.I.
DGND
15205_DATA_A
78211/PLL_CE
15205_DATA_B
PLL_CLK
4094(4)_STB
STEREO
TUNED
PLL_DO
PLL_DI
RDS_CLK
RDS_DATA
4094(2)_STB
4094(3)_STB
PG10_SCL
PG10_SDA
ANT_REV
LINKACTIVE
DAB/XM_TXD
DAB/XM_RXD
+5V_K +5V_K
R2035 R2036
2.2k 2.2k
IPOD_TXD_5V
C C
B Q2008 B Q2009
IPOD_TXD_3V3
DTC114EKA DTC114EKA
E E
DGND DGND
ATMEGA_RST
+3V3_K +3V3_K
R2037 R2038
2.2k 2.2k
IPOD_RXD_3V3
C C
B Q2010 B Q2011
IPOD_RXD_5V
DTC114EKA DTC114EKA
E E CNVSS R2039 N.I.
DGND DGND
M_RST R2040 N.I.
J2002A
To Keyboard J2002B
+5V_K +39V AC4.8V1 AC4.8V2 +5V_K
+12V_D +5V_K
C2008 C2007
1000u 0.1u
10V
8 1
7 2
6 3
5 4
DGND
U2002
AT24C16
+5V_K
DGND
R2013 4.7k
C2019
0.1u
R2014 4.7k
DGND
U2001
M30280FCHP-U3
ANT_REV
61 P0_6
62 P0_5
63 P0_4
XM_PWR
64 P0_3
65 P0_2
78211/PLL_CE
66 P0_1
4094(3)_STB
67 P0_0
KEY03 68 P10_7
KEY02
69 P10_6
KEY01
70 P10_5
KEY00
71 P10_4
TRIG_OUT_3
72 P10_3
TRIG_OUT_2 73 P10_2
TRIG_OUT_1
74 P10_1
+5V_K
75 AVSS
TRIG_IN
76 P10_0
77 VREF
78 AVCC
SPI0_SOMI_5V
79 P9_7
SPI0_SIMO_5V
80 P9_6
MCU
+5V_K +5V_K +5V_K +5V_K +5V_K
C2003 C2004
0.1u 47u
J2012A R2003
R2002 16V
FAILSAFE 10k 0
1
2
OUT V+
U2006
C2005 C2006 J2014A
47u 0.1u AME8530
C2017
1
16V 5
R2012 VCC PW 1 1000p
2 0 GND NC
3 4
X2001
2
N.I.
R2001 C2001 C2002
100k 22u 0.1u
16V
DGND DGND DGND DGND DGND DGND DGND DGND DGND
X2001A
20MHz
+5V_K +5V_K +5V_K
OUT V+
C2025 C2026 C2027 C2031
GND NC
C2028 C2032
47u 47u 47u
16V 0.1u 16V 0.1u 16V 0.1u
DGND DGND DGND DGND DGND DGND DGND
OSC_CLK
P80
J2015A
ISP Header
DSP_SPI0_SOMI_5V
32 9 1
PD2 PD5 ATMEGA_SOMI
2
+5V_K
31 10
PD1 PD6
3
SPI0_CLK_5V
30 11 4
PD0 PD7 SPI0_SIMO_5V
SPI0_SCS_5V
RESET 5
29 ATmega48 12
PC6 PB0
DGND 6
ATMEGA_SOMI
28 13
PC5 PB1
U2007
27 14 P80
PC4 PB2
26 15 SPI0_SIMO_5V
PC3 PB3
25 16 ATMEGA_SOMI
PC2 PB4
SPI0_CLK_5V
R2041
0
DGND
DGND
67
J2001A
To Right Amp J2001B
+15V
R2026 1k
R2015 0
R2016 0
DGND
R2043
R2015 & R2016
4094(1)_CLK_AMP
10k
N.I. FOR CE
4094(1)_DATA_AMP
DGND +5V_V +5V_V +13V +12V_D +5V_K
R2017 & R2018
0 OHM FOR CE
R2017 N.I.
DAB/XM_TXD
DAB/XM_RXD
R2018 N.I.
S_CLIP_IND
AUTO/OFF
232_TXD
232_RXD
DAB/XM_TXD
40
P6_3
VFD_CLK XM_PWR
P3_0 39
TRIG_IN
VFD_CS
P3_1 38
TRIG_OUT_2
VFD_DATA TRIG_OUT_1
37
P3_2
4094_STB
TRIG_OUT_3
36
P3_3
PLL_CLK
35
P3_4
STEREO
P3_5 34
TUNED
33
P3_6
IR_R
PLL_DO POWER_ON
32
P3_7
RTS1
31
P6_4 C2033
0.1u
(Place near J2007A)
CLK1
P6_5 30
232_RXD
P6_6 29
232_TXD
28
P6_7
DGND
PG10_SDA
27
P7_0
PG10_SCL
26
P7_1
P7_2 25
S_CLIP_IND
24
P7_3
HP_DET
23
P7_4 +5V_K +5V_K +5V_K
POWER_ON
22
P7_5
MIC_BIAS
P7_6 21 R2019 R2004
10k 10k
J2013A
JTAG Connector
+5V_K 1
RTS1
RTS1 2
CLK1
CLK1 3
232_RXD
P80 232_RXD 4
CE
CE 5
ATMEGA_RST 6
DGND 7
RESET 8
CNVSS 9
232_TXD
232_TXD 10
R2023
10k
+5V_K +13V
DGND DGND
R2009 R2010
10k 0
D2001
LL4148
C2018 R2011
0.1u 1k
50V
1206
DGND
+5V_K
U2009
74HC00 C2029
C2030
47u
1 1A 14
VCC 16V 0.1u
+5V_K +3V3_K
2 1B 13
4B DGND
3 1Y 12
4A U2008
LM1117 - 3.3
4 2A 4Y 11 IN OUT
5 2B 3B 10 C2021 C2022 C2024 C2023
47u 47u
16V 0.1u 16V 0.1u
6 2Y 9
3A
DGND DGND DGND DGND DGND
7 GND 8 SPI0_SOMI_5V
3Y
DGND
R2045 N.I.
Component in box are N.I. for T765 (except
0 ohm for T765 R2045 which is 0 ohm.
+5V_K +5V_K
R2028 R2044
4.7k 4.7k
C
B Q2012
Q2007 DTC114EKA
T3904 C
0
R2042
B
E
C2020
R2027 E
1u
10k
50V
DGND DGND DGND DGND
J2007A
To Conn#2 J2007B
$$$32086 1
$$$32324 2
DAB_IN 3
SC_1 4
SC_2 5
S_CLIP_IND 6
AUTO/OFF 7
232_TXD 8
232_RXD 9
IR_O_1 10
IR_O_2 11
XM_PWR 12
TRIG_IN 13
IR_R_MIX 14
TRIG_OUT_2 15
TRIG_OUT_1 16
DGND 17
TRIG_OUT_3 18
+5V_V 19
+5V_K 20
+12V_D 21
+12V_D 22
+13V 23
+13V 24
IR_R 25
POWER_ON 26
+5V_K +5V_K +5V_K
C2009 C2010
R2008 R2007
10u
N.I. 100k 0.1u
16V
U2005
74HC132
DGND
1 1A 14 +5V_K
VCC
IR_F IR_F 2 1B 13
4B
R2024 0
3 1Y 4A 12
4 2A 4Y 11
5 2B 10
3B
6 2Y 9
3A
DGND 7 GND 8 IR_O_2
3Y
DGND