NAD C446 Service Manual page 19

FPP BOARD
J201
24 3V3S
23
22 8VD
21
20
ENCAa
19
18
ENCBa
17
16
VFMISO
15 C207
14 DGND 3V3S
KEYMISOa
U209
13
100n
74LCX244
12
IRFa 1 18
11 DGND 1G 1Y1
2 16
10 A1 1Y2
VFSTBa 4 14
9 A2 1Y3
KEYSTBa 6 12
8 A3 1Y4
8
7 A4
FPCLK
6
LED_A 19 9
5 DGND 2G 2Y1
FPMOSI 11 7
4 B1 2Y2
VFD_BUSY 13 5
3 B2 2Y3
ENC_Enter 15 3
2 B3 2Y4
LED_B 17
1 B4
Header 24
DGND
DGND
C214 C218 C219
C220
330P 330P 330P 330P
dgnd dgnd dgnd dgnd
DGND
K201 K202 K203
Blend Display
Mute/Mode
3V3S DGND
1
15
2
10
K204 K205 K206 K207
DGND
Power Memory AM/FM Preset
11
12
13
14
3
4
5
6
DGND
3V3S
DGND
R2508
10KJ
DGND
CON203 CON204
4 4 ENC_Enter
3 3 3
A A
B
2 2 2
B B
C
1 1 1
A
V201
EC11E15244G1 CON-4 CON-4A
DGND
DGND
DGND
USB CON208
VUSB 1
1
USB_DM 2
2
USB_DP 3
3
4
4
5
CON-4
6 C400
0.1UF
DGND
C405
0.1UF
U201
R201
IRF 1
D
100R
2
R202 DGND G
3
3V3S 10R V
TSOP34838
C201
47U/16
DGND
ICSP
CON201
1
2 3V3F
ENCA
3 DGND
PGDATA
ENCB
4
KEY_MISO PGCLK
5
R2000 NC
VFD_BUSY
100R
DGND
4 3 DGND
y gnd
100R
2 CON202
R210
a
0R R208
5 1 NC
R211
3V3F vcc /oe 1
0R
R212
2
0R
R213 C208 U208
3
0R
AHC1G125
100n X7R
4
DGND
VSTB
R215
120R
KEY_STB
R219A
120R 100R
VCLK
R219B
120R
R221
KEY_SCK 3V3F
R219C U210
120R 3V3F
VSI VCLK 1 8
R219D
120R 1a vcc
R222
2 7
3y 1y
100R
VSTB 3 6
2a 3a
R228
4 5
gnd 2y
100R
DGND
NC7NZ34
VSI
5VF
8VD
D202
1SS352
C222
100n
C223 C224
100U/25V 22u/6V3
U211
DGND
ASM1117-5
KEY_SCK
KEY_STB
C227
3V3S
100n
SH/LD
CLK INH
U212
CLK
HC165
SER
A
9 KEY_MISO
B QH
7
C QH
D
E
F
G
H
DGND
Red
3V3S
R251 R252
C234
10K 10K
ENCA
10nK R254
1K2J
C235
R255
Q207
10KJ
2SC1815
100N 3V3S
C236
R258
10KJ
100N R259
1K2J
C237
ENCB
10nK
DGND
3V3F
C202 C203
22u/6v3 100N
C204
DGND
DGND 100N
R203
22k 3V3F
D201
DGND
MCLR 3V6
U205 C206
100N
28 1 R204
RB7/KBI3/PGD MCLR/VPP/RE3 10k DGND
27 2 R205
RB6//KBI2/PGC RA0/AN0/C12IN0- 220k 60VF
26 3
R2001
RB5/KBI1/PGM RA1/AN1/C12IN1-
25 4
RB4/KBI0 RA2
24 5
RB3/AN9 RA3
3V3F 23 6
RB2/INT2 RA4
22 7
RB1/INT1 RA5/HLVDIN
21 8
RB0/INT0/FLT0/AN12 VSS DGND
20 9
VDD OSC1/CLKIN/RA7
19 10
VSS OSC2/CLKOUT/RA6
18 11
RC7/RX/DT RC0
17 12
RC6/TX/CK RC1
16 13
R2002
RC5/SDO RC2
100R
15 14
RC4/SDI/SDA RC3/SCK/SCL
C209
DGND
PIC18F26K20
100N
Q201 3V3F
2SC1815
D2002
1SS352
C225
22u/6V3
C226
2.2U/10V
S
8VD
3V3S
R244 R245
470R 75R
VFPEN b
Q203 Q202
2SC1815 2SA1015
D717
3LED
Amber Blue
3V3S
R253 R280
10K 10K
DGND
Q210
R256 2SC1815 R282
LED_A
10K 10K
R257 R281
10K 10K
DGND
LED_B
Page 19
C205
DGND 5VF
U206
100n
74HCT244
1 18 VFD BKG
R207A
DGND 1G 1Y1
120R
2 16 VFD CLKG
R207B
A1 1Y2
120R
4 14 VFD SIG
R207C
A2 1Y3
120R
6 12 VFD BK1
R207D
A3 1Y4
120R
8 VFD BK2
R209A
A4
120R
VFD LAT1
R209B
120R
19 9 VFD LAT2
R209C
DGND 2G 2Y1
120R
11 7 VFD SI1
R209D
B1 2Y2
120R
13 5 VFD SI2
R214A
B2 2Y3
120R
15 3 VFD CLK1
R214B
B3 2Y4
120R
17 VFD CLK2
R214C
B4
120R
R214D
120R
VFD BK1
VFD LAT1
DGND
VFD CLK1
VFD SI1
R227
60VF 100R
DGND
5VF
C221
100N
VFD BKG DGND
VFD CLKG
VFD SIG
VFD SI2
VFD CLK2
VFD LAT2
VFD BK2
M201 8VF T201
APM2301 D 1
2
3
R260 0.5W 4
R261 5
DGND
C228
22U/10V
C229 C230
VFD TR
220U/16V 220U/16V
DGND DGND DGND
C231 C232
1N 1N
D205
BAV21W
Q204
DTC114EKA R262
0.5W 10V DGND
D206
R263
BAV21W
1K2
DGND D207
R264
C240 C241 C242
1K2 100N
10U/25V 10U/25V
DGND DGND
U203
1
VF- F-
2
F-
3
F-
4
BK1
5
LAT1
6
CLK1
7
SI1
8
NC
9
VH
10
VH
C210
11
100N GND
12
GND
13
VDD
R235 14
BKG
15
10k LATG
16
CLKG
17
SIG
18
SOG
19
NC
20
SI2
21
CLK2
22
LAT2
23
BK2
26
F+
27
F+
28
VF+ F+
CIG128X3201
R265
10 D209
0R VF+
9
DGND
8
0R VF-
7 7V5
R266
6 R267
C243
10U/10V
60VF
BAV21W
D208
R268
C244
100N C245
47u/80v
DGND