Major Waveformes - Casio WK-1800 Service Manual

1
2
1 Clock signal for CPU
Check point CP1
2 Clock signal for DSP
LSI3 pin 14
5
6
5 NMI signal
LSI9 pin 64
6 Reset signal RESB
LSI9 pin 87
9
0
9 Key common signal KC0
JA connector pin 11
0 Key common signal KC1
JA connector pin 12
MAJOR WAVEFORMS
3
4
7
8
— 28 —
3 Voltage VDD
IC5 pin 2
4 Reset signal RES
IC5 pin 1
7 Sound signal L-OUT
SIELD-WIRE PE-W
8 Sound signal L-VOL0OUT
JJ connector pin 1
Tone: Grand Piano (No. 000), Volume: Max.
Touch speed: Max., Key: A4