Casio WK-1800 Service Manual page 25

Small sound output
1. Press "CH5" button.
2. The instrument emits a sound in small volume and indicates "sound MIN" on the display.
Medium sound output
1. Press "CH6" button.
2. The instrument emits a medium volume sound and indicates "sound MID" on the display.
Large sound output
1. Press "CH7" button.
2. The instrument emits a large volume sound and indicates "sound MAX" on the display.
Large sound left channel output
1. Press "CH8" button.
2. The instrument emits a large volume sound from the left speaker and indicates "sound L" on the
display.
Large sound right channel output
1. Press "CH9" button.
2. The instrument emits a large volume sound from the right channel and indicates "sound R" on the
display.
MIDI IN/OUT test
1. Connect MIDI IN and MIDI OUT terminals with a MIDI cable.
2. Press "CH11" button.
3. When the MIDI circuit is normal, display indicates "MIDI OK" whereas "MIDI ER" will be shown if the
MIDI circuit is abnormal.
Modulation bender check
1. Press "CH13" button.
2. Display indicates "Modulat"
3. Rotate the modulation bender to the following order.
Max → Min → Max
When the modulation bender is proper, on OK alarm sounds and display indicates "OK".
— 24 —