CASIO SK-100 (01) PDF MANUAL

The SK-100 features a sampling function, which allows you to “capture” virtually any audible sound and incorporate it in your music. Sounds are “sampled” via a built-in microphone (or external inputs) and are played back via sampling pads or keyboard keys. Sampled sounds can be triggered at corresponding pitches, used to create polyphonic chords, patched through LOOP and REVERSE effects, or incorporated into rhythm patterns.

The SK-100’s CHORD MEMORY function allows you to create backing chord patterns for entire songs. These are held in memory along with the selected rhythm pattern. Up to 159 chord changes may be programmed into memory for automatic accompaniment of your original songs.

The PATTERN MEMORY function allows programming of two 2-bar patterns and two 1-bar fill-ins, including bass, rhythm, chord, and sampling sounds. You can create your own accompaniment patterns and play along. Additionally, you can change the basic rhythm of your original patterns by selecting any of the Auto-Rhythms.

The Volume Sliders are used to control the overall volume (Main), accompaniment volume, rhythm volume, and sample sounds volume output via the built-in speakers or output jacks.

The Tempo Control keys (▲ and ▼) are used to raise or lower the tempo of the rhythm.

The Start/Stop key starts and stops Auto-Rhythms, Pattern Programs, and Chord Memory programs.

The Synchro/Fill-in key is used to specify synchronized starts of rhythm when the keyboard (lower section) is touched (Synchro Start) and to trigger programmed rhythm fill-ins during playback.

The Off button turns off the Keyboard Split and Casio Chord functions.

The Keyboard Split button is used to specify the Keyboard Split function, dividing the keyboard between F3 and F#3.

The Casio Chord buttons (ON, FINGERED) are used to specify the mode of the Casio Chord auto-accompaniment function.

The Sampling keys (SAMPLING, SAMPLING LONG, EFFECT SELECT) are used to specify sampling modes and effects.

The Pattern Program keys (RHYTHM PATTERN, BASS PATTERN, CHORD PATTERN) are used to specify parts of patterns to be programmed in Pattern Memory.

The Chord Memory keys (RECORD, PLAY) are used to specify the Chord Memory function for recording and playback.

The Tone Select keys are used to select preset instrument timbres or sampled sounds for the upper part of the keyboard.

The Auto-Rhythm keys are used to select preset Auto-Rhythms.

The Program keys (PROGRAM 1, PROGRAM 2) are used to select memory banks (programs) in Pattern Memory.

The Sampling Pads are used to trigger sampled sounds. Pads No. 1 and 2 are also used to delete parts of a pattern program (Delete function) and insert sounds in rhythm (Timing function) when creating original rhythm patterns.

The Key Transpose keys (located on the keyboard) are used to transpose the pitch of sampling sounds when the TRANSPOSE effect is active.

The Sampling Effects keys (LOOP, REV., located on the keyboard) are used to select LOOP or REVERSE effects when in the Sampling Mode.

The Envelope keys (located on the keyboard) are used to specify the envelope (attack, decay, sustain characteristics) of selected timbres or sampled sounds in the Sampling Mode.

The Percussion keys (located on the keyboard) are used to program percussion sounds into the Pattern Program rhythm track.

Right Side:

1. Tuning Control: Adjusts pitch of entire keyboard within ± 50 cents.

2. Sampling Jacks (Mic, Line in): Used to connect an external sampling mic or sampling sound from another external sound source.

Rear Panel:

3. Headphone Jack: For connection of headphones (CP-2 optional).

4. Output Jack: For connection to an external keyboard amplifier or audio equipment.

5. AC Adaptor Jack: For connection of AC adaptor (AD-5 optional).

The SK-100 operates on both AC and DC power.

DC Power:

• Dry Batteries: Use six D size (SUM-1) manganese dry batteries. Open the battery compartment cover on the bottom, remove old batteries, and load new ones ensuring correct polarity. Replace all six batteries at the same time for best performance. Weak batteries cause lower volume or poor tonal quality.

• Car Battery: Use the optional car battery adaptor (CA-5) connected to the cigarette lighter socket.

AC Power:

• AC Adaptor: Use the optional AC adaptor (AD-5). Ensure the adaptor’s voltage rating matches your local power supply (100, 117, 220, or 240V). Plug the adaptor into an AC outlet and the cord into the unit’s AC Adaptor Jack. Using the AC adaptor automatically cuts off battery power.

Yes, power is automatically cut off approximately 6 minutes after the last operation of the unit. Power can be restored by switching the power OFF and then ON again.

• Use only genuine CASIO adaptors to avoid damage.

• Remove batteries if the unit will not be used for extended periods to prevent damage from battery leakage.

• The AC adaptor may become warm when connected; this is normal, but disconnect it when not in use.

• Using non-genuine adaptors or loading batteries with reversed polarity can cause batteries to burst.

1. Select your power source (batteries or AC adaptor) and make necessary connections.

2. Press the POWER button (switch). The POWER INDICATOR will light up.

3. The PIANO tone is automatically selected.

4. Adjust the main volume using the MAIN VOLUME SLIDER.

5. Play the keyboard.

Press any of the TONE SELECT KEYS (e.g., PIANO, VIBRAPHONE, CELESTA, etc.). An indicator above the selected key will light up. The SK-100 has 12 preset tones plus 2 preset sample sounds (Conga, Acoustic Piano) selectable via these keys.

1. Select the desired rhythm by pressing one of the AUTO-RHYTHM KEYS (e.g., ROCK 1, 8 BEAT, etc.). When power is turned ON, ROCK 1 is automatically selected.

2. Press the START/STOP KEY.

3. The rhythm starts, and the TEMPO INDICATOR lights, with a red LED marking the first beat and green LEDs for subsequent beats.

4. Adjust the rhythm volume using the RHYTHM VOLUME SLIDER.

1. Select the desired rhythm using the AUTO-RHYTHM KEYS.

2. Press the SYNCHRO/FILL-IN KEY. The red TEMPO INDICATOR lights, indicating Synchro Start is in standby mode.

3. Play any key on the lower part of the keyboard (below the split point F#3). The rhythm will start immediately in synchronization with the note played.

While an Auto-Rhythm is playing, press the SYNCHRO/FILL-IN KEY. A corresponding fill-in pattern will play. If the key is held down, the fill-in pattern repeats until the end of the measure during which the key is released.

Press the START/STOP KEY while the rhythm is playing.

• To raise the tempo, press and release the TEMPO CONTROL KEY (▲). Tempo increases each time the key is pressed.

• To lower the tempo, press and release the TEMPO CONTROL KEY (▼). Tempo decreases each time the key is pressed.

• Holding down the keys does not change the tempo; press repeatedly for major changes.

• Pressing both TEMPO CONTROL KEYS simultaneously returns the tempo to the initialized setting.

Press the SPLIT BUTTON. This splits the keyboard into UPPER TONE (right of F3) and LOWER TONE (F3 and below) sections. Select the UPPER TONE using the TONE SELECT KEYS. Chords (in Casio Chord mode) are produced using PIANO timbre only in the LOWER TONE section. Note: Keyboard Split activates automatically when CASIO CHORD is selected.

1. Press the CASIO CHORD ON BUTTON. A red LED will light.

2. Start the selected Auto-Rhythm (use START/STOP or Synchro Start).

3. Play keys below the split point (F3 and lower). Pressing a single key produces a major chord based on that root note. The accompaniment includes a bass line corresponding to the rhythm style and chord.

4. To play other chord types:

• Minor Chord (e.g., Cm): Press the root key (C) and any other key to its right simultaneously.

• Seventh Chord (e.g., C7): Press the root key (C) and two other keys to its right simultaneously.

• Minor Seventh Chord (e.g., Cm7): Press the root key (C) and three other keys to its right simultaneously.

(Any keys to the right of the root in the lower section will work for adding complexity, regardless of whether they are black or white).

5. Adjust the accompaniment volume using the ACCOMP. VOLUME SLIDER.

1. Press the CASIO CHORD FINGERED BUTTON. A red LED will light.

2. Start the selected Auto-Rhythm (use START/STOP or Synchro Start).

3. Play chords by pressing the corresponding keys in the lower section of the keyboard (below the split point). The system adds an appropriate bass line based on the rhythm and chord played.

4. Adjust the accompaniment volume using the ACCOMP. VOLUME SLIDER.

5. Adjust the tempo using the TEMPO CONTROL KEYS.

The SK-100 has 2 memory “areas”. Each area can hold a sampled sound up to 0.8 seconds long.

• SAMPLING mode: Allows sampling of up to 2 different sounds (Sample 1, Sample 2), each up to 0.8 seconds. Each sound uses one memory area.

• SAMPLING LONG mode: Allows sampling of one sound up to 1.6 seconds long. This uses both memory areas and can only be entered into SAMPLE CHANNEL 1.

The factory presets are Sample 1 (Conga) and Sample 2 (Acoustic Piano).

1. Press the SAMPLE CHANNEL KEY (SAMPLE 1 or SAMPLE 2) corresponding to the sound you want to initialize.

2. Press the SAMPLING KEY.

3. Initialization is marked by the sound of a bass drum. The previously sampled sound in that channel is erased, and the factory preset is selected.

Note: Both channels are initialized if batteries are removed or power is lost.

1. Press the desired SAMPLE CHANNEL KEY (SAMPLE 1 or SAMPLE 2). Red indicators light up.

2. Press the SAMPLING KEY (for 0.8 sec sample) or SAMPLING LONG KEY (for 1.6 sec sample, only available for SAMPLE 1). A green LED lights, indicating readiness to sample.

3. Make the sound you want to sample near the built-in microphone (or via external input). Sampling begins automatically when sound is detected (auto trigger).

4. Sample end is marked by the sound of a cymbal crash.

Notes:

• SAMPLING LONG can only be selected in SAMPLE 1 channel. Selecting it erases any existing short samples.

• If you sample into SAMPLE 2 while SAMPLE LONG is in SAMPLE 1, SAMPLE 1 reverts to its initialized sound.

Sampled sounds can be played back in two ways:

[1] On the Keyboard:

• Select SAMPLE 1 or SAMPLE 2 using the TONE SELECT keys.

• Play keys on the UPPER TONE section (above the split point F#3). The sampled sound plays back at the pitch corresponding to the key pressed. The speed of playback also changes with pitch.

• Sampled sounds are recorded with a base pitch corresponding to A4.

[2] On the Sampling Pads:

• Press the SAMPLING PAD (1 or 2) corresponding to the sample you want to play.

• The pitch is fixed at the original sampled pitch (initialized sounds are pitched at “A”, octaves differ).

• You can play up to three notes polyphonically using a combination of keyboard keys and sampling pads.

The SK-100 has LOOP, REVERSE, and TRANSPOSE effects.

• LOOP: Repeats the sampled sound as long as a key is held down.

• REVERSE: Plays the sampled sound backward.

• TRANSPOSE: Allows chromatic pitch shifting using the KEY TRANSPOSE keys on the keyboard (up 7 steps/3.5 tones, down 8 steps/4 whole tones). Sample Pad sounds are also transposed simultaneously.

How to use effects:

1. Select the SAMPLE CHANNEL (1 or 2) whose sound you want to affect.

2. Press the EFFECT SELECT KEY.

3. Press the desired SAMPLING EFFECTS KEY on the keyboard (LOOP, REV., or one of the KEY TRANSPOSE keys).

4. A sound confirms the effect is engaged (hi-hat for LOOP/TRANSPOSE, cymbal crash preceded by hi-hat for REVERSE).

5. To cancel LOOP or REVERSE, repeat steps 1-3.

Envelopes alter the loudness characteristics of sampled sounds.

1. Select the SAMPLE CHANNEL (1 or 2) you want to affect.

2. Press the EFFECT SELECT KEY.

3. Press the ENVELOPE KEY on the keyboard corresponding to the desired envelope shape.

Available Envelopes:

• (a) Default/Original: Returns envelope to original state.

• (b) SLOW ATTACK: Slow increase in volume at the beginning (like violin/cello).

• (c) TREMOLO: Slight vibrato.

• (d) DAMPED TONE I: Piano/guitar-like damped tone, slow decay.

• (e) DAMPED TONE II: Slower decay than DAMPED TONE I.

1. Press the RECORD KEY in the Chord Memory section.

2. Specify the Sample Pad to be altered by pressing its corresponding SAMPLE CHANNEL KEY (SAMPLE 1 or SAMPLE 2). Both sampled sounds and preset PCM Sample Sounds can be selected.

3. Specify the desired pitch by playing a key on the UPPER TONE half of the keyboard. The initialized pitch corresponds to A4. The LED above the selected key indicates the new pitch.

4. Press the RECORD KEY (Chord Memory section) once again to complete the procedure. The LED goes out.

Note: Sample sounds, sampling effects, and altered Sample Pad pitches are retained in memory via a battery back-up function as long as power is supplied.

You need to erase each part (Rhythm, Bass, Chord) for the chosen program (1 or 2) separately:

• To erase RHYTHM PATTERN: Press RHYTHM PATTERN KEY, then DELETE KEY (#1 SAMPLE PAD), then PROGRAM KEY (1 or 2).

• To erase BASS PATTERN: Press BASS PATTERN KEY, then DELETE KEY (#1 SAMPLE PAD), then PROGRAM KEY (1 or 2).

• To erase CHORD PATTERN: Press CHORD PATTERN KEY, then DELETE KEY (#1 SAMPLE PAD), then PROGRAM KEY (1 or 2).

After erasing, the specified pattern program is empty and ready for programming.

1. Erase any existing rhythm pattern for the desired program slot (see previous Q&A).

2. Press the RHYTHM PATTERN KEY.

3. Press the START/STOP KEY. The TEMPO DISPLAY flashes like a metronome (red on beat 1, green on beats 2, 3, 4).

4. Select the percussion instrument (or sample sound) using the PERCUSSION KEYS on the keyboard. (To use sampled sounds: Press the “SAMPLE” percussion key, then select SAMPLE 1 or 2 via the channel keys, then play notes on the UPPER TONE keys).

5. Input the sound at the desired timing by tapping the TIMING PAD (#2 SAMPLE PAD). The 2-measure pattern will repeat.

6. To delete sounds for the currently selected instrument, hold down the DELETE PAD (#1 SAMPLE PAD) while the pattern plays.

7. To add accents, press the ACCENT KEY (on the keyboard) just before tapping the TIMING PAD.

8. Repeat steps 4-7 for other instruments/sounds.

9. When finished, press the START/STOP KEY to stop the rhythm.

10. Press the PROGRAM KEY (1 or 2) to save the rhythm pattern into the selected memory bank.

Each Pattern Memory (Program 1 or 2) can have a 1-bar fill-in pattern in addition to the main 2-bar rhythm pattern.

1. Press the RHYTHM PATTERN KEY.

2. Press the SYNCHRO/FILL-IN KEY. (This tells the system you are programming the fill-in).

3. Follow steps 3 through 10 from the “How do I program a Rhythm Pattern?” procedure, but program only a 1-bar pattern.

1. Erase any existing bass pattern for the desired program slot.

2. Press the BASS PATTERN KEY.

3. Press the START/STOP KEY. The previously programmed rhythm pattern (or metronome if none exists) will play.

4. Play a simple bass line (up to 2 measures) on the UPPER TONE keys of the keyboard. The bass timbre is preset.

5. To delete the bass pattern, hold down the DELETE PAD (#1 SAMPLE PAD) while the pattern plays.

6. When satisfied, press the START/STOP KEY to stop.

7. Press the PROGRAM KEY (1 or 2) to save the bass pattern.

1. Erase any existing chord pattern for the desired program slot.

2. Press the CHORD PATTERN KEY.

3. Press the START/STOP KEY. The programmed rhythm and bass patterns will play repeatedly.

4. Input the rhythmic pattern of the chord accompaniment by tapping the TIMING PAD (#2 SAMPLE PAD). The 2-measure pattern will repeat.

5. To delete the chord timing pattern, hold down the DELETE PAD (#1 SAMPLE PAD) while the pattern plays.

6. When satisfied with the rhythm, press the START/STOP KEY to stop.

7. Press the PROGRAM KEY (1 or 2) to save the chord pattern.

1. Press the PROGRAM KEY (1 or 2) corresponding to the pattern you want to play.

2. Press the START/STOP KEY (or use Synchro Start by pressing SYNCHRO/FILL-IN then playing a lower keyboard key).

3. The programmed rhythm will start.

4. Play Casio Chord progressions on the LOWER TONE half of the keyboard. The programmed bass line and chord accompaniment pattern will follow the chords you play.

5. Play melodies on the UPPER TONE half using the selected timbre (preset tone or sample sound).

6. Press the SYNCHRO/FILL-IN KEY at any point to trigger the programmed fill-in pattern.

1. Select a suitable rhythm (preset Auto-Rhythm or a programmed Pattern Memory 1 or 2).

2. Press the RECORD KEY (Chord Memory section).

3. Press the START/STOP KEY. The selected rhythm starts after a 1-measure count-in.

4. Play the desired chord accompaniment progression using either CASIO CHORD (One-finger or Fingered mode) on the LOWER keyboard section. Up to 159 chord “steps” can be recorded (see Step Chart below).

5. If the memory capacity (159 steps) is exceeded, the red and green LEDs of the TEMPO INDICATOR light simultaneously, and further input is impossible.

6. When finished programming, press the START/STOP KEY to stop recording.

7. Press the RECORD KEY again to exit programming mode.

Notes:

• To erase the entire chord memory program, enter programming mode (steps 1-2), press START/STOP once, then press it again during the first count-in measure.

• You can change the Lower Tone sound or select a different Rhythm pattern while programming, but these changes are not stored in the Chord Memory.

The number of steps depends on whether you use Casio Chord (One-finger) or Fingered mode:

Chord Name	Symbol	Casio Chord Steps	Fingered Steps
Major	(M)	1	3
Minor	m	2	3
Seventh	7	3	4
Minor Seventh	m7	4	4
Major Seventh	M7	–	4
Minor seventh flat five	m7-5	–	4
Sus four	sus4	–	3
Augmented	aug	–	3
Diminished	dim	–	4

* Specifically, each key depressed on the keyboard is counted as a single step in memory.

1. Press the PLAY KEY (Chord Memory section).

2. Press the START/STOP KEY.

3. The programmed rhythm pattern and chord accompaniment will start playing automatically after a 1-measure intro count.

Hint: During playback, you can select alternate timbres and rhythms, although the LEDs won’t indicate these temporary changes.

System initialization takes about 5 seconds after power is turned ON. Wait 5 seconds before beginning operations.

This can happen if the power was turned OFF while the unit was in sampling standby state (which lasts up to 15 seconds after pressing SAMPLING or SAMPLING LONG). The power will turn OFF as soon as a sampling signal is received (from mic or line in) or after the 15-second standby period expires if no signal is received.

More than 2 keys were likely played simultaneously during programming. Bass patterns must be input one note at a time. Delete the bass pattern and begin programming again correctly.

The Auto Power OFF function does not operate when the unit is in Chord Pattern programming mode with the rhythm stopped. Press the CHORD PATTERN KEY to exit this mode.

This can occur if the Sample Channel was not specified before performing Sampling input, especially if Key Split or Auto Accompaniment functions were active. Turn off Key Split or Auto Accompaniment functions before entering sampling mode. Always specify the Sample Channel with the SAMPLE CHANNEL KEY before sampling.

This might happen if you attempted to play a 4-note polyphonic chord using a sample sound. Sample sounds allow up to three notes polyphony (including notes played via Sampling Pads). Avoid playing more than three sample notes simultaneously.

The number of notes input in the pattern memory may have exceeded capacity (approx. 1000 notes total across patterns). Erase a section of some part in memory or memorize the entire section again. The MEMORY OVER display (Tempo Indicator lights) will disappear.

This can happen under two conditions:

1. When batteries have become dead (memory is not protected if batteries die).

2. When operations are not performed correctly as described in the owner’s manual.

Remedy: Replace all batteries if they are dead. Refer to the owner’s manual for correct operating procedures.

The “SAMPLE” Percussion Key (on the keyboard) was likely pressed while playing the sample sound on the keyboard during programming. Exit from the Pattern programming mode. Be sure to press the “SAMPLE” Percussion Key *before* inputting sample sounds in Rhythm Pattern programming.

The RHYTHM PATTERN, BASS PATTERN, or CHORD PATTERN key was likely pressed during an Auto-Rhythm fill-in. Stop the RHYTHM track and exit from the programming mode. When programming patterns, only press the Pattern Keys (Rhythm, Bass, Chord) after stopping the rhythm.

• Location: Avoid using the unit in direct sunlight, extreme temperatures or humidity, or sandy/dusty places for extended periods.

• Power Supply: Use only the rated voltage. To prevent noise and degraded sound quality, avoid using the same AC outlet as other household appliances.

• Handling: Do not drop the unit; strong shocks cause malfunctions. Sliders and keys require a light touch; excessive force may cause damage.

• Cleaning: Clean the keyboard with a soft cloth dampened with detergent. Never use paint thinner, benzene, or other solvents.

• Malfunction: If the keyboard doesn’t function properly, check connections and power (are batteries dead?). If problems persist, contact the original retailer or local Casio dealer. Do not attempt repairs yourself.

• Manual: Store the operation manual in a safe place for future reference.