Casio CTK-620L Service Manual

— 13 —
MAJOR WAVEFORMS
1 Clock signal B1
Test point T5
2 Clock signal B2
Test point T6
7 Key common signal KC0
JM connector pin 9
8 Key common signal KC1
JM connector pin 8
3 MNI signal
JM connector pin 18
4 APOFF signal
JS connector pin 12
5 LED common signal L23
JN connector pin 1
6 LED common signal L22
JN connector pin 2
Key : C7
1
2
3
4
7
8
9
0
5
6
A
B
A Sound signal (R)
Test point T1
B Sound signal (L)
Test point T2
Tone : French horn, Volume : Maximum,
Touch speed : Maximum, Reverb : Stage
Key : A4
9 CE signal for ROM
LSI3 LH536PNV pin 12
0 CE signal for working RAM
LSI4 TC55257DFL pin 20

Casio CTK-620L Specifications

General

Brand	Casio
Model	CTK-620L
Category	Electronic Keyboard
Language	English