— 6 —
KC0
KC1
KC2
KC3
KC4
KC5
KC6
KC7
FI0
E1
1
F1
1
F#1
1
G1
1
G#1
1
A1
1
A#1
1
SI0
E1
2
F1
2
F#1
2
G1
2
G#1
2
A1
2
A#1
2
FI1
B1
1
C2
1
C#2
1
D2
1
D#2
1
E2
1
F2
1
F#2
1
SI1
B1
2
C2
2
C#2
2
D2
2
D#2
2
E2
2
F2
2
F#2
2
FI2
G2
1
G#2
1
A2
1
A#2
1
B2
1
C3
1
C#3
1
D3
1
SI2
G2
2
G#2
2
A2
2
A#2
2
B2
2
C3
2
C#3
2
D3
2
FI3
D#3
1
E3
1
F3
1
F#3
1
G3
1
G#3
1
A3
1
A#3
1
SI3
D#3
2
E3
2
F3
2
F#3
2
G3
2
G#3
2
A3
2
A#3
2
FI4
B3
1
C4
1
C#4
1
D4
1
D#4
1
E4
1
F4
1
F#4
1
SI4
B3
2
C4
2
C#4
2
D4
2
D#4
2
E4
2
F4
2
F#4
2
FI5
G4
1
G#4
1
A4
1
A#4
1
B4
1
C5
1
C#5
1
D5
1
SI5
G4
2
G#4
2
A4
2
A#4
2
B4
2
C5
2
C#5
2
D5
2
FI6
D#5
1
E5
1
F5
1
F#5
1
G5
1
G#5
1
A5
1
A#5
1
SI6
D#5
2
E5
2
F5
2
F#5
2
G5
2
G#5
2
A5
2
A#5
2
FI7
B5
1
C6
1
C#6
1
D6
1
D#6
1
E6
1
F6
1
F#6
1
SI7
B5
2
C6
2
C#6
2
D6
2
D#6
2
E6
2
F6
2
F#6
2
FI8
G6
1
G#6
1
A6
1
A#6
1
B6
1
C7
1
C#7
1
D7
1
SI8
G6
2
G#6
2
A6
2
A#6
2
B6
2
C7
2
C#7
2
D7
2
FI9
D#7
1
E7
1
F7
1
F#7
1
G7
1
SI9
D#7
2
E7
2
F7
2
F#7
2
G7
2
CIRCUIT DESCRIPTION
KEY MATRIX
Note: Each key has two contacts, the first conatct
1
and second contact
2
.
Key
Second contact 2
First contact 1
FI
KC
SI
NOMENCLATURE OF KEYS
C2
C3
C4
C5
C6
C7
G7
E1
Содержание WK-1800
Страница 30: ...29 PRINTED CIRCUIT BOARD Main PCB JCM733 MA1M Top View Bottom View 1 6 5 4 3 2 9 10...
Страница 31: ...30 Sub PCB JCM733 MA2M 7 8 Sub PCB JCM733 MA3M Top View Top View...
Страница 32: ...31 Console PCBs JCM733 CN1M Top View Top View Console PCBs JCM733 CN2M...
Страница 33: ...32 Display PCB JCM733 LCD1M Top View Bottom View...
Страница 34: ...33 Keyboard PCBs JCM763T KY1M Top View Top View Keyboard PCBs JCM763T KY2M...
Страница 40: ...39 SubPCB JCM733 MA2M MA3M 7 8 Regulator IC Power Amp...
Страница 41: ...40 Console PCBs JCM733 CN1M CN2M S Register S Register...
Страница 42: ...41 LCD Driver PCB JCM733 LCD1M LCD Driver Back Light Circuit...
Страница 43: ...42 Keyboard PCBs JCM763T KY1M KY2M...