Micro Controller Pcb Schematic (Pic's/Switches/Led's) - Cambridge Audio 340A Service Manual

+5V
6 mA
R4
220R
AUX/PHONO CD TUNER/DAB
D1 D2 D3
CHANNEL LED CHANNEL LED CHANNEL LED
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AP14518/1 Microcontroller PCB Schematic (PIC's/Switches/LED's)
Cambridge Azur 340A Intergrated Amplifier
+5V
R3
220R
DVD AV/MD
TAPE MON
CN1
D6
1
Vpp
D4 D5 2
Data I/O
CHANNEL LED 3
CLK
CHANNEL LED CHANNEL LED
4
+5V
5
GND
6
GND
ICP
DGND
CRS1
DGND
DGND
FREQ=4MHz
SW1
AUX/PHONO
+5V
R1
100K
IN-CIRCUIT PROGRAMMING CONNECTOR
+5V
C5
100n
U1 DGND
1
HI = NORMAL
MCLR/Vpp RB7
2 28
DC OFFSET
RA0 RB6
3 27
RA1 RB5
26
4
RA2 RB4
25
5
RA3 RB3
6 24 +5V
RA4 RB2
7 23
RA5 RB1
8 22
Vss2 RB0
21
9
OSC1 Vdd
20
10
OSC2 Vss
11 19
vol up
RC0 RC7
12 18
RC1 RC6 vol down DGND
13 17
RC2 RC5 strobe
16
14
RC3 RC4 data
15
PIC16F72
PORT B HAS WEAK PULLUPS 250uA typ
clock
IR IN
MUTE
OUTPUT RELAY
SW2 SW3 SW4 SW5 SW6
CD TUNER/DAB DVD AV/MD TAPE MON
+5V
R2
47R
U3
CN3 CN4
3 3
OPT
2 2 1
GND
1 1 2
+5V
3
CONN-H3 CONN-H3
TSOP18 IR RECEI
DGND
IR RECEIVER
TSOP1835/37
CN2
8
OUTPUT RELAY
7
6
MUTE
5
strobe
+5V 4
clock
3
data
2
1
H8 2.54mm 90
CONN TO MAIN PCB
DGND
+5V
U2
1
vol up
FIN
2
GND1
3
RIN vol down
C3
4
NC
C4
5
47u 16V
GND2
6
100n
VCC
7
OUT2
C6
8
COM
9
100n
OUT1
BA6218
VOLUME POT
MOTOR CONTROL
DGND
C1
100n
C2
10U 16V SM EL
CN5
2
1
H2 2.54mm 90
TO MOTOR
6