
47
20 Diagram
Title
RA0
6
RA1
7
RA2
8
RA3
9
RB0
10
RB1
11
RB2
12
RB3
13
RB4
14
RB5
15
RB6
16
RB7
17
RC0
18
RC1
19
RC2
20
RC3
21
RC4
22
RC5
23
RC6
24
RC7
25
VS
S
4
MCLR/VPP
28
OSC1/CLKIN
27
T0CKI
1
OSC2/CLKOUT
26
NC
3
NC
5
VD
D
2
PIC16C55
IC1
1
2
3
4
5
6
7
8
9
10
BTWF10
SK5
1
2
3
SK3
IN 1
1
IN 2
2
IN 3
3
IN 4
4
IN 5
5
IN 6
6
IN 7
7
IN 8
8
GN
D
9
DIODE CLAMP
10
OUT 8
11
OUT 7
12
OUT 6
13
OUT 5
14
OUT 4
15
OUT 3
16
OUT 2
17
OUT 1
18
ULN2803A(18)
IC2
100n
C3
100n
C4
100n
C5
100µ/25V
C7
10µF
C6
SK1
SK2
1N4007
D10
1N4007
D11
D8
D7
D6
D5
D4
D3
D2
1N4148
D1
5V6
ZD2
5V6
ZD3
5V6
ZD4
5V6
ZD1
5V6
ZD5
5V6
ZD6
1
2
3
4
5
6
SK4
I
O
GN
D
UA7805
VR1
X4.000MHZ
X1
22p
C2
22p
C1
10K
R10
10K
R11
10K
R9
KRS1243
SW1
KRS1243
SW2
10K
R13
1K5
R14
+5V
+5V
+5V
+5V
+5V
+5V
SK1
SK2
CLOSE
OPEN
OPEN
OPEN
OPEN
CLOSE
CLOSE
CLOSE
8 Indep. buttons
8 Rotary switch
4 4 indep.
B4= all off or mem.
ACTION
D1... D8 mounted = toggle mode for corresponding output
D1... D8 not mounted = momentary mode for corresponding output
BACKLIGHT: High / Low
120
R19
A1
A2
A3
A4
B1
B2
B3
B4
A
4
3
1
2
B
8X
KEYBOARD
A
B
+5V
BC547
T2
1K5
R12
1N4148
D9
+V
Keyclick relay
+V
100K
R16
100K
R17
100K
R15
100K
R18
To backlight pcb
+5V
1
2
3
4
5
6
7
8
9
10
96120205
SK8
BC557
T1
680
R8
680
R7
680
R6
680
R5
680
R4
680
R3
680
R2
680
R1
VR3SM121C
RY1
680
R20
L-934GC
LD17
Com +
Com -
1
2
3
4
5
6
7
8
O
p
en
co
ll
ec
to
r
o
ut
pu
t
Diagram
Содержание K8046
Страница 2: ......
Страница 22: ...22 Testing the circuit A B 1 2 3 4 Connect 9 to 12Vdc 300mA between GND and VA or VB 7 Testing the circuit ...
Страница 35: ...35 Mounting the keyboard WALL MOUNTED Fig 23 ...
Страница 36: ...36 FLUSH MOUNTED Max diameter 8mm 138mm x 85mm x min 40mm 5 4 x 3 3 x 1 6 Fig 24 Mounting the keyboard ...
Страница 37: ...37 PANEL MOUNTED Mounting the keyboard Fig 25 ...
Страница 45: ...45 19 PCB layout PCB ...
Страница 46: ...46 PCB ...