NAD T 775 - Page 49

47
KEYBOARD
1
1
2
4
3
5
4
52
5
53
6
54
7
55
8
56
9
57
10
58
11
59
12
60
13
61
14
62
15
63
16
64
17
65
18
66
19
69
VD2201
VFD-16-BT-130GINK
R2201
1k
R2202
4.7k
R2203
2.2k
E
C
B
Q2201
2SD1918
R2204
33k
R2205
470
R2209 470
R2207
10k
D2203
6.2V
1/2W
C2201
0.1U
R2206
22
1/4W
R2208
22
1/4W
C2202
0.1U
1
A
2
B
3
C
M2201
EC162102F2B-HA1-002
C2203
0.1U
C2204
0.1U
R2230
10k
R2231
10k
C2205
100p
C2206
100p
R2232 100
R2233 100
R2234
2.2k
R2235
2.2k
R2236
2.2k
1
VOUT
2
GND
3
VCC
D2202
FM-6038TM2-5AN
C2207
0.1U
C2208
1u
50V
R2210
10
12
S2216
TONE CONTROLS
D2209
LL4148
D2208
LL4148
D2207
LL4148
D2206
LL4148
D2205
LL4148
R2216
10k
R2215
10k
R2214
10k
R2213
10k
12
S2204
MEMORY
12
S2203
INFO
12
S2202
TUNER MODE
12
S2201
AM/FM/DB
12
S2208
RIGHT
12
S2207
DOWN
12
S2206
LEFT
12
S2205
UP
12
S2218
FRONT INPUT/MP
12
S2217
TONE DEFEAT
12
S2210
ENTER
12
S2209
POWER ON
12
S2214
SOURCE DOWN
12
S2213
SOURCE UP
12
S2212
SPK B
N.I. for T175
12
S2211
SPK A
N.I. for T175
12
S2215
LISTENING MODE
1
STROBE
2
DATA
3
CLOCK
4
Q1
5
Q2
6
Q3
7
Q4
8
VSS
9
QS
10
QS
11
Q8
12
Q7
13
Q6
14
Q5
15
O/P_ENABLE
16
VDD
U2201
HEF4094BT
C2210
0.1U
C2211
47u
16V
R2211
2.2k
C2212
4700p
C2209
N.I.
50V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
J2002B
To MCU J2002A
R2212
10k
D2204
LL4148
E
C
B
Q2202
DTA114EKA
R2237
1k
R2238
1k
E
C
B
Q2203
DTA114EKA
R2239
1k
E
C
B
Q2204
DTA114EKA
1
R
2
O
C
C
4
B
D2201
BL-BUBJFB52C4V-1
E
C
B
Q2206
DTA114EKA
R2241
2.2k
E
C
B
Q2205
DTA114EKA
R2240
2.2k
DGND
DGND
+39V
VFD_DATA
VFD_CLK
VFD_CS
VFD_RST
+5V_K
DGND DGND DGND
+39V
VH
DGNDDGND DGND
+5V_K+5V_K
DGNDDGND
DGND
+5V_K
DGNDDGND
+5V_K
DGND
+5V_K
DGND
DGND
+39V
AC4.8V1 AC4.8V2
+5V_K
DGND
VFD_CS
+5V_K
DGND
EN02 EN01 4094_STB KEY_00 KEY_02 KEY01 KEY_03 IR_F AC4.8V2 AC4.8V1 +39V
+5V_K
DGND
VFD_RST
+5V_K
RED
ORANGE
BLUE
DGND
DGND
+5V_K
DGND
+5V_K
4094_CLK
4094_DATA
DGND +5V_K