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18. Schematic diagram.
SK11
1 2 3 4 5
+V
C6
GND
IRx1
R20
+V
GND
OUT
GND
GND
X1
+V
C1
C2
GND
GND
GND
2
+V
VDD
27
OSC2/CLKOUT 26
OSC1/CLKIN
1
T0CKI
28
MCLR/VPP
18
RC0
19
RC1
20
RC2
IC1
21
RC3
PIC16C55A
22
RC4
23
RC5
24
RC6
25
RC7
3
NC
5
NC
VSS
4
GND
D20
LD16
VA
SK1
GND
D21
GND
VB
R16
SK2
+V
T1
BC547
GND
D16
D1
D2
D17
R17
C5
D18
D19
RA0 6
RA1 7
RA2 8
RA3 9
RB0 10
RB1 11
RB2 12
RB3 13
RB4 14
RB5 15
RB6 16
RB7 17
R18
R19
R1
R2
LD1
LD2
GND
GND
GND
GND
SK12
1 2 3 4 5 6 7 8 9 1011121314151617181920
GND
VR1
I
O
+V
GND
C7
C8
C3
C4
GND
D1...D15: MOUNTED = TOGGLE MODE
D3
D4
D5
D6
D7
D8
D9
D10
R3
R4
R5
R6
R7
R8
R9
R10
LD3
LD4
LD5
LD6
LD7
LD8
LD9
GND
GND
GND
GND
GND
GND
GND
GND
D18
D19
ADDRESS SELECTION
NOT MOUNTED
NOT MOUNTED
1 (D4 K6710)
NOT MOUNTED
MOUNTED
2 (D6 K6710)
MOUNTED
NOT MOUNTED
3 (D5 k6710)
D16
D17
MODE
NOT MOUNTED
NOT MOUNTED
15 SWITCHES
NOT MOUNTED
MOUNTED
15 POS. ROTARY SWITCH
MOUNTED
NOT MOUNTED
7 SWITCHES & 8 POS ROTARY SWITCH
MOUNTED
MOUNTED
7 POS. ROTARY SWITCH & 8 POS. ROTARY SWITCH
D11
D12
D13
D14
D15
1
IN1
OUT1
2
IN2
OUT2
3
IN3
OUT3
4
IN4
OUT4
5
IN5
OUT5
6
IN6
OUT6
7
IN7
OUT7
IC2
8
GND
COMD
ULN2003A
GND
IC3
1
18
IN1
OUT1
17
2
IN2
OUT2
3
16
IN3
OUT3
15
4
IN4
OUT4
5
14
IN5
OUT5
6
13
IN6
OUT6
7
12
IN7
OUT7
8
11
IN8
OUT8
10
9
GND
COMD
ULN2803A
GND
R11
R12
R13
R14
R15
LD11
LD12
LD13
LD14
LD15
GND
GND
GND
GND
GND
Schematic diagram
CH1
SK3
CH2
16
CH1
15
CH2
CH3
14
CH3
SK4
13
CH4
CH4
12
CH5
11
CH6
CH5
10
CH7
SK5
CH6
9
CH7
SK6
CH8
CH8
CH9
CH9
SK7
CH10
CH11
CH12
CH13
SK8
CH14
CH15
+VCOM
SK9
SK10
+VCOM
17
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