
53
CONNECTOR-1
0 2
TO DS P
TO DS P
TO PR E -O U T
TO V O LU M E
TO V O LU M E
TO H DM I
TO C O M PO N E N T
TO V IDE O
TO M C U
TO M C U
TO M C U
(O PTIO N A L)
TO F R O N T IN PU T
TO F R O N T IN PU T
TO F R O N T IN PU T
TO F R O N T IN PU T
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
J2 0 1 1 B
To C on n # 4 J2 0 1 1 A
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
J2 0 0 9 B
To C on n # 4 J2 0 0 9 A
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
4 6
J6 0 0 2 B
to V O LU M E (J6 0 0 1 B )
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
4 6
J6 0 0 1 B
to V O LU M E (J6 0 0 1 A )
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
J4 0 0 1 B
to C O M PO N E N T (J4 0 0 1 A )
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
J1 0
To H DM I m odu le
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
J6 5 0 1 B
To Pre-O u t (J6 5 0 1 A )
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
J4 1 0 1 B
To V ideo (J4 1 0 1 A )
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
J1 1 0 1 B
to DS P (J1 1 0 1 A )
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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
J1 1 0 2 B
to DS P (J1 1 0 2 A )
1
2
J9 0 0 4 A
TO F R O N T-IN PU T J9 0 0 4 B
1
2
3
J9 0 0 5 A
TO F R O N T-IN PU T J9 0 0 5 B
1
2
3
J9 0 0 6 A
TO F R O N T-IN PU T J9 0 0 6 B
1
2
3
J9 0 0 8 A
TO J9 0 0 8 B
1
2
3
J9 0 0 8 B
TO J9 0 0 8 A
1
2
3
4
J9 0 0 7 A
TO F R O N T IN PU T J9 0 0 7 B
N .I.
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
J2 0 0 7 B
TO M C U J2 0 0 7 A
X F L
X F R
H P_ L
H P_ R
V 6 _ L
V 6 _ R
A DC L
A DC R
TU N E D
PLL_ DO
7 8 2 1 1 /PLL_ DI
7 8 2 1 1 /PLL_ DI
+ 5 V _ K
+ 1 2 V _ A
+ 1 2 V _ A
-1 2 V _ A
-1 2 V _ A
DG N D
DS P_ F L
DS P_ F R
DS P_ S L
DS P_ S R
DS P_ S B L
DS P_ S B R
DS P_ S U B W
DS P_ C E N
7 .1 _ F L
7 .1 _ F R
7 .1 _ S L
7 .1 _ S R
7 .1 _ S B L
7 .1 _ S B R
7 .1 _ S U B W
7 .1 _ C E N
G N D_ DS P
G N D_ DS P
G N D_ V 6
G N D_ V 6
G N D_ V 6
G N D_ V 6
G N D_ 7 .1
G N D_ 7 .1
7 .1 _ S U B W
G N D_ 7 .1
7 .1 _ C E N
G N D_ 7 .1
7 .1 _ F L
G N D_ 7 .1
7 .1 _ F R
G N D_ 7 .1
7 .1 _ S L
G N D_ 7 .1
7 .1 _ S R
G N D_ 7 .1
7 .1 _ S B L
G N D_ 7 .1
O_
S
P
D
IF
7.
1_FL
7.
1_FR
7.
1_S
L
7.
1_S
R
7.
1_S
B
L
7.
1_S
B
R
7.
1_S
U
B
W
7.
1_CEN
G
N
D
_7.
1
7.
1_FL
G
N
D
_7.
1
G
N
D
_7.
1
7.
1_FR
7.
1_S
L
7.
1_S
R
G
N
D
_7.
1
G
N
D
_7.
1
7.
1_S
B
L
G
N
D
_7.
1
7.
1_S
B
R
G
N
D
_7.
1
7.
1_S
U
B
W
G
N
D
_7.
1
7.
1_CEN
G
N
D
_7.
1
PO
_
F
L
PO
_
F
R
PO
_
S
L
PO
_
S
R
PO
_
S
B
L
PO
_
S
B
R
PO
_
S
U
B
W
PO
_
C
E
N
4052_A
4052_B
4052_B
4052_A
DG
N
D
+5
V
_
K
+
12V
_A
-
12V
_A
G
N
D
_7.
1
G
N
D
_7.
1
PO
_
F
L
G
N
D
_7.
1
PO
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F
R
G
N
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_7.
1
PO
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G
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_7.
1
PO
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_7.
1
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B
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G
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1
PO
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S
U
B
W
G
N
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_7.
1
PO
_
C
E
N
G
N
D
_7.
1
DS P_ F L
DS P_ F R
G N D_ DS P
DS P_ S L
G N D_ DS P
DS P_ S R
G N D_ DS P
DS P_ S B L
G N D_ DS P
DS P_ S B R
G N D_ DS P
DS P_ S U B W
G N D_ DS P
DS P_ C E N
G N D_ DS P
PO _ F L
PO _ C E N
PO _ S U B W
PO _ S B R
PO _ S B L
PO _ S R
PO _ S L
PO _ F R
PO _ F L
G N D_ 7 .1
PO _ F R
G N D_ 7 .1
PO _ S L
G N D_ 7 .1
PO _ S R
G N D_ 7 .1
PO _ S B L
G N D_ 7 .1
PO _ S B R
G N D_ 7 .1
PO _ S U B W
G N D_ 7 .1
PO _ C E N
G N D_ 7 .1
S_
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T
_
C
Y_
IN
Y_
IN
PB
_
IN
PB
_
IN
CV
B
S
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U
T
PR
_
IN
PR
_
IN
+8
V
_
V
+8
V
_
V
S_
Y
_
M
O
N
S_
C
_
M
O
N
R_M
O
N_O
U
T
R_M
O
N_O
U
T
CV
B
S
_M
O
N
_O
U
T
G_
M
O
N
_
O
U
T
B_M
O
N_O
U
T
G_
M
O
N
_
O
U
T
B_M
O
N_O
U
T
S_
O
U
T
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Y
$$$7687
$$$7724
$$$9087
$$$9163
$$$9172
$$$9181
+8
V
_
V
+8
V
_
V
$$$9163
$$$9087
$$$9181
$$$9087
+5
V
_
V
$$$7687
DG
N
D
+5
V
_
V
H P_ L
H P_ R
G N D_ V 6
4 0 9 4 (6 )_ S TB
4 0 9 4 (5 )_ S TB
4 0 9 4 (1 )_ DA TA
4 0 9 4 (1 )_ C LK
V 6 _ O PT
DA B _ IN
S PI0 _ S IM O _ 5 V
S PI0 _ S O M I_ 5 V
S PI0 _ C LK _ 5 V
S PI0 _ S C S _ 5 V
S PI0 _ E N A _ 5 V
IN T_ 5 V
DG N D
DG N D
+ 5 V _ K
+ 5 V _ K
A N T_ R E V
DA B /X M _ TX D
DA B /X M _ R X D
LIN K A C TIV E
S _ V 6 _ IN _ Y
DG N D_ V
DG
N
D_
V
DG
N
D_
V
1 5 2 0 5 _ DA TA _ A
7 8 2 1 1 /PLL_ C E
1 5 2 0 5 _ DA TA _ B
7 8 2 1 1 /PLL_ C LK
4 0 9 4 (4 )_ S TB
X M _ TX D
X M _ R X D
1 5 2 0 5 _ DA TA _ A
7 8 2 1 1 /PLL_ C E
1 5 2 0 5 _ DA TA _ B
7 8 2 1 1 /PLL_ C LK
4 0 9 4 (4 )_ S TB
S TE R E O
4 0 9 4 (1 )_ C LK _ V O L
4 0 9 4 (1 )_ DA TA _ V O L
S TE R E O
G N D_ DS P
G N D_ DS P
G N D_ DS P
G N D_ DS P
4 0 9 4 (2 )_ S TB
4094(
3)
_S
T
B
4 0 9 4 (3 )_ S TB
4094(
1)
_D
A
T
A
_V
O
L
4094(
1)
_CL
K_V
O
L
P
G
10_S
D
A
P
G
10_S
CL
C V B S _ V 6 _ IN
S _ V 6 _ IN _ C
$$$9163
$$$9181
$$$9172
$$$7687
$$$7724
$$$9087
DG
N
D_
V
DG
N
D_
V
DG
N
D_
V
DG
N
D_
V
PG 1 0 _ S C L
PG 1 0 _ S DA
DG
N
D
4094(
2)
_S
T
B
4094(
1)
_D
A
T
A
4094(
1)
_CL
K
DG
N
D_
V
CV
B
S
_V
6_I
N
DG
N
D_
V
S_
V6
_
IN
_
Y
DG
N
D_
V
S_
V6
_
IN
_
C
DG
N
D_
V
CV
B
S
_O
U
T
DG
N
D_
V
CV
B
S
_M
O
N
_O
U
T
S_
O
U
T
_
Y
DG
N
D_
V
S_
O
U
T
_
C
DG
N
D_
V
S_
C
_
M
O
N
S_
Y
_
M
O
N
DG
N
D_
V
DG
N
D_
V
DG
N
D_
V
DG
N
D_
V
DG
N
D_
V
DG
N
D_
V
TU N E D
PLL_ DO
G N D_ V 6
M P3 _ R
M P3 _ L
G N D_ V 6
G N D_ 7 .1
G N D_ 7 .1
DS
P_
F
R
G
N
D_
DS
P
DS
P_
F
L
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
G
N
D_
DS
P
DS
P_
S
B
R
DS
P_
S
B
L
DS
P_
S
R
DS
P_
S
L
XFR
XFL
DS
P_
S
U
B
W
DS
P_
C
E
N
MI
C
AD
C
L
G
N
D_
DS
P
AD
C
R
G
N
D_
DS
P
DG
N
D
DG
N
D
DG
N
D
DG
N
D
+5
V
_
D
S
P
+5
V
_
D
S
P
+5
V
_
D
S
P
+5
V
_
D
S
P
+
12V
_A
+
12V
_A
+
12V
_A
DG
N
D
DG
N
D
DG
N
D
DG
N
D
DG
N
D
-
12V
_A
-
12V
_A
-
12V
_A
4094(
1)
_CL
K
V
6_O
P
T
O_
S
P
D
IF
DA
B
_
IN
S
P
I0_S
IM
O
_5V
S
P
I0_S
O
M
I_5V
S
P
I0_CL
K_5V
S
P
I0_S
CS
_5V
S
P
I0_ENA
_5V
IN
T
_5V
XM
_
T
XD
XM
_
R
XD
D
A
B/
XM
_
T
XD
D
A
B/
XM
_
R
XD
AN
T
_
R
E
V
L
IN
K
AC
T
IVE
4094(
6)
_S
T
B
4094(
5)
_S
T
B
4094(
1)
_D
A
T
A
DS
P_
F
R
DS
P_
F
L
DS
P_
S
B
R
DS
P_
S
B
L
DS
P_
S
R
DS
P_
S
L
DS
P_
S
U
B
W
DS
P_
C
E
N
G
N
D_
DS
P
M IC
G N D_ DS P
M P3 _ L
M P3 _ R
G N D_ V 6
V 6 _ L
G N D_ V 6
V 6 _ R
+5
V
_
K
A DC L
A DC R
A DC L
A DC R
G N D_ DS P
G N D_ DS P
4 0 9 4 (1 )_ C LK _ V O L
4 0 9 4 (1 )_ DA TA _ V O L
+ 5 V _ DS P
DG N D
+ 8 V _ V
+ 5 V _ V
DG N D_ V
+ 1 2 V _ A
G N D_ DS P
-1 2 V _ A
+ 5 V _ DS P
+ 5 V _ DS P
+ 5 V _ DS P
DG N D
DG N D
DG N D
+ 8 V _ V
+ 8 V _ V
+ 8 V _ V
+ 5 V _ V
DG N D_ V
DG N D_ V
DG N D_ V
+ 1 2 V _ A
+ 1 2 V _ A
G N D_ DS P
G N D_ DS P
G N D_ DS P
-1 2 V _ A
-1 2 V _ A
G N D_ V 6
H P_ L
G N D_ V 6
H P_ R
IPO D-
IPO D+
IP
O
D
-
IP
O
D
+
R DS _ DA TA
R DS _ DA TA
DG N D
O_
I2
S
2
O_
I2
S
0
O_
I2
S
3
O_
I2
S
1
O_
MC
L
K
OUT
O_
S
C
L
K
O_
L
R
C
L
K
O_
I2
S
2
O_
I2
S
0
O_
I2
S
3
O_
I2
S
1
O_
MC
L
K
OUT
O_
S
C
L
K
O_
L
R
C
L
K
Summary of Contents for T 175
Page 1: ...NAD SERVICE MANUAL T 175 T 175 AV Tuner Pre Ampli er AV Tuner Pre Ampli er DRAFT DATE MAY 2008...
Page 9: ...9 WIRING DIAGRAM...
Page 11: ...11 BLOCK DIAGRAM...
Page 17: ...17 PCB LAYOUT DSP BOARD COPPER SIDE...
Page 18: ...18 DSP BOARD COMPONENT SIDE...
Page 19: ...19 KEY BOARD COMPONENT SIDE KEY BOARD COPPER SIDE...
Page 20: ...20 PRE OUT BOARD COPPER SIDE...
Page 21: ...21 PRE OUT BOARD COMPONENT SIDE...
Page 22: ...22 VOLUME BOARD COPPER SIDE...
Page 23: ...23 VOLUME BOARD COMPONENT SIDE...
Page 24: ...24 F VIDEO BOARD COPPER SIDE F VIDEO BOARD COMPONENT SIDE...
Page 25: ...25 MAIN BOARD COMPONENT SIDE...
Page 26: ...26 MAIN BOARD COPPER SIDE...
Page 27: ...27 TRIGGER BOARD COMPONENT SIDE TRIGGER BOARD COPPER SIDE...
Page 28: ...28 COMPONENT BOARD COMPONENT SIDE COMPONENT BOARD COPPER SIDE...
Page 29: ...29 VIDEO BOARD COPPER SIDE VIDEO BOARD COMPONENT SIDE...
Page 30: ...30 HDMI BOARD COPPER SIDE...
Page 31: ...31 HDMI BOARD COMPONENT SIDE...
Page 32: ...32 CONNECTOR 1 BOARD COMPONENT SIDE...
Page 33: ...33 CONNECTOR 1 BOARD COPPER SIDE...
Page 34: ...34 PSU STD BOARD COMPONENT SIDE...
Page 74: ...74 ATMEGA48 20 U2014 AT24C16 U2002...
Page 75: ...75 74HC00D U2015 74HC132 U2005 DSP D708E0001BRFP266 U1001...
Page 76: ...76 SST39VF800 U1004 K4S641632K U1003...
Page 78: ...78 SN74LVC245 U1010 U1022 TL5001CD U1011...
Page 79: ...79 SN74HCT245 U1009 SN74LVC257AD U1033 U1035 U1036...
Page 81: ...81 TPS3103 U1021 CS8416 U1002...
Page 82: ...82 BU9450 U1032 PCM1791A U1012 1016...
Page 83: ...83 HDMI XC9572XL U20 CM1213 8 U2 U11 U16 U24 U32 D2308 in Trigger...
Page 84: ...84 PCA9517 U5 PCF8574 U10 U201...
Page 85: ...85 PI3B16233 U9 U13 SN74AHCT244 U200...
Page 86: ...86 AD8061 U18 U22 U26 AD8063 U17 U21 U25 U27 U29 U30...
Page 87: ...87 MC141585DW U19...
Page 88: ...88 TMDS341 U15 U23...
Page 89: ...89 ADV7320 U28...
Page 90: ...90 ADV7403 U12 AD9388 U14...
Page 91: ...91 AD9389B U31 LM2575 VR3 VR4...
Page 92: ...92 LM1086 VR200 Composite S Video 74HC4051D U4103 4106 BA7660FS U4101 4102 U4001 in Component...
Page 93: ...93 Component 74HC4052D U4002 4003...
Page 94: ...94 Volume TPA6120A2DWP U6008...
Page 95: ...95 R2S15205FP U6001 6002...
Page 96: ...96 Trigger 74HC86D U2303 ST232BDR U2301 TPS2011A U2302...
Page 97: ...EXPLODED VIEW A...
Page 102: ...102 SERVICE MANUAL T175 AV Tuner Pre Ampli er NAD ELECTRONICS LTD LONDON...