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Chapter 2

Know the panel

Every control, and the handful of held buttons that unlock most of the machine.

Written in our own words from Reference Manual pp. 5–11, 160–165. Roland’s manuals

0/8
In this chapter · 8
  1. 2.1Find your way around the panel
  2. 2.2Read the screen and the lights
  3. 2.3Everything on the Shift button
  4. 2.4What the Remain button does
  5. 2.5What holding the Value knob does
  6. 2.6Bank-wide jobs with Del and Copy
  7. 2.7How sound travels through the 404
  8. 2.8When the screen shows an error
2.1Basics

Find your way around the panel

This is our own map of the 404. Tap any key, knob, pad or port to see what it does and where to read more. Once you know which area does what, you rarely have to hunt for a control.

Tap any key, knob, pad or port. Hold Shift to light up the second job of each one.

SP-404MKIIVOLUMEMIN – MAXCTRL 1CUTOFFCTRL 2RESONANCECTRL 3DRIVEVALUEPUSH ENTERA-1 BUS-190BPMFILTER+DRIVERESONATORDELAYISOLATORDJFXLOOPERMFXPATTERNSELECTUNDOPATTERNEDITRECORDSETTINGSOUND GENDELRECTR-RECRESAMPLEMERGEEXITSTOPCOPYPROTECTREMAINLIVE MODESTART/ENDCHOPPITCH/SPEEDENVELOPEMARKSAVE EFXBPMSYNCSYNC ALLGATEGATE ALLLOOPPING-PONGREVERSEPAD MUTEROLLROLL SETA/FBANK VOLB/GBANK VOLC/HBANK VOLD/IBANK VOLE/JBANK VOLSHIFTSAMPLE MODEBANK1FIXED VELOCITY216 VELOCITY3CUE4CHROMATIC5EXCHANGE6INIT PARAM7PAD LINK8MUTE GROUPS9METRONOME10COUNT-IN11TAP TEMPO12GAIN13UTILITY14IMPORT/EXPORT15PAD SETTING16EFX SETTINGBUSFXMUTE BUSHOLDPAUSEEXTSOURCEINPUT SETTINGSUBPADPROJECTFRONT EDGESD CARD (SIDE)PHONESMINIGAINMIC/GUITARINPUTREAR, SEEN FROM BEHINDDC INPOWERUSBMIDI OUTMIDI ININ RIN L/MONOOUT ROUT L/MONO

Pick a control to see what it does.

All 62 controls and ports, from the pads to the rear panel. The word under a key or pad is what it does while SHIFT is held.

Our own schematic · not to scale · Shift jobs shown for every key, though the unit prints only some of them

The areas of the panel

AreaWhat’s thereWhat it’s for
Knob row, across the topVOLUME, then CTRL 1–CTRL 3The overall level, and whichever three parameters the screen is showing
Screen and effect buttonsThe screen, with FILTER+DRIVE, RESONATOR and DELAY on its left, and ISOLATOR, DJFX LOOPER and MFX on its rightSeeing what’s going on, and turning effects on and off
Left-hand blockPATTERN SELECT, PATTERN EDIT, RECORD SETTING; DEL, REC, RESAMPLE; EXIT, COPY, REMAINPatterns, recording and housekeeping
Right-hand blockSTART/END, PITCH/SPEED, MARK and VALUE; BPM SYNC, GATE, LOOP, REVERSE, ROLL; the bank buttons and SHIFTEditing a sample, choosing how it plays, and moving between banks
PadsPAD 1–PAD 16, with a column of BUS FX, HOLD, EXT SOURCE and SUB PAD to their rightPlaying, and many of the Shift shortcuts
Front edgePHONES, GAIN, the MIC/GUITAR switch and INPUTHeadphones, plus your mic or guitar
SideSD card slotBackups, imports and exports
RearDC IN, POWER, USB, MIDI, LINE IN and LINE OUTPower and everything else you plug in (Plug everything in)

Reading the labels

  • On our map, the word under a key or pad is what it does with SHIFT held. Everything on the Shift button lists them all.
  • The real panel prints those words under the pads, but under only some of the keys. It also prints two that aren’t Shift jobs in Roland’s lists: DJ MODE under D/I and E/J, which you press together to enter DJ mode, and CURRENT PAD under REMAIN, which the manual doesn’t explain.
  • The small orange labels on the pads, such as CUE and SYNC, are for DJ mode.
  • VALUE has PUSH ENTER printed by it, because you press it to confirm as well as turn it.

From the community

Introducing the Roland SP-404MKII Creative Sampler and Effector

RolandChannel

Roland’s own 13-minute tour of the hardware, sampling, bus effects, patterns and DJ mode. It dates from the 2021 launch, so there’s no TR-REC, looper or side chain yet.

SP-404 Mk2 Beginner's Guide (Part 1): Setup, Sampling, Recording & Chopping

Chris Laps

A patient 25-minute start, from setup and SD cards to recording and chopping. Parts 2 and 3, also listed here, pick up effects and patterns.

2.2Basics

Read the screen and the lights

The screen you’ll see most is the top screen, which appears as soon as the 404 is ready to play. The strip along the top tells you where you are and how the selected sample is set up, and the large number below it is that sample’s tempo. The other screens replace it as you work, and EXIT brings you back.

The top screen

On screenWhat it tells you
P-1The current project.
A-1The selected sample’s bank and number: here, bank A, sample 1.
BUS-1The BUS FX the sample is assigned to (Send each sample to a bus).
Fix or VelWhether FIXED VELOCITY is on (Fix) or off (Vel) (Control how hard the pads hit).
DC, USB or BATWhat’s powering the unit: the AC adaptor, the USB port or batteries (Three ways to power it).
The large numberThe BPM of the selected sample (Give a sample its tempo).

Moving around

  • Turn VALUE to move a cursor, pick an item or change a value. Press it to confirm or to carry out what’s selected.
  • Turn CTRL 1–CTRL 3 to edit the parameters on the current screen. On tabbed setting screens such as SYSTEM, CTRL 3 picks the tab.
  • Press EXIT to go back a screen or back out of what you’re doing.
  • Hold REMAIN to see the settings of the sample on the selected pad, or how long it has left while it’s playing (What the Remain button does).

What the lights mean

What you seeWhat it means
Pads lit orangeYou’re in sample mode, and the pads play samples.
Pads lit purpleThese pads hold patterns (Play back your patterns).
A pad lit whiteThe pattern on that pad is playing.
Pads blinking blueYou’re not in sample mode. Press EXIT a few times, then PATTERN SELECT.
A pad lit redThat pad is muted (Mute a pad on the fly).
Pads blinking redAfter you press REC, these are the empty pads you can record to (Record a new sample).
Bank button lit or blinkingLit means bank A–E, and blinking means bank F–J (Play a pad and switch banks).
BUS FX lit or blinking orangeLit means BUS 1 is selected, and blinking means BUS 2 (Turn an effect on from the keys).
EXT SOURCE lit, or blinking redLit means the external input is on. Blinking red means the input level is too high and may distort (Plug in a synth, mic or guitar).
GATE blinking slowlyOne-shot playback is on (Play a sample through without interruption).
LOOP blinkingThe sample is set to a ping-pong loop (Loop forwards, backwards or both ways).
MARK blinkingThe skip-back memory is recording (Save what you just played with skip-back).

If the screen seems to misbehave

  • The effect screen keeps disappearing. It goes back to the previous screen after a few seconds without input. Hold REMAIN and press the effect button to pin it (Edit an effect and keep your settings).
  • A knob doesn’t change a value straight away. In Catch mode, a knob only takes effect once it reaches the stored value. The Edit Knob Mode and EFX Knob Mode settings choose how knobs behave, though DJ mode always uses Catch (Every system setting).
  • Pop-ups get in the way. Pop-up Time shortens them or turns them off (Every system setting).
  • An icon appears in the lower-left corner. Live mode is on, and some buttons won’t respond (Lock the risky buttons for a gig).
2.3Basics

Everything on the Shift button

Hold SHIFT and press a pad or button to reach its second job. You’ll use these constantly, because they open most of the 404’s screens, and the words printed under the pads and some of the keys remind you which is which. This list is the hub: each row is a quick reminder, and its link goes to the full explanation.

Shift with a pad

SHIFT + PAD 1
Pins the sample’s velocity at 127, however hard you hit the pad (FIXED VELOCITY). See Control how hard the pads hit.
SHIFT + PAD 2
Opens 16 VELOCITY, so each pad plays the selected sample at a different level. See Control how hard the pads hit.
SHIFT + PAD 3
Sets the balance of what you monitor in PHONES (CUE). See Preview in your headphones.
SHIFT + PAD 4
Enters chromatic mode, so the pads play the selected sample at different pitches. See Play one sample across the pads in key.
SHIFT + PAD 5
Swaps what’s stored on two pads, samples or patterns (EXCHANGE). See Swap and copy pads and banks and Swap, copy, extract and delete patterns.
SHIFT + PAD 6
Puts the selected sample’s settings back to their defaults (INIT PARAM). See Check a sample’s settings, or reset them.
SHIFT + PAD 7
Links pads into groups, so one pad fires the whole group (PAD LINK). See Trigger several pads from one.
SHIFT + PAD 8
Groups samples so that only the last one you played sounds (MUTE GROUP). See Let samples cut each other off.
SHIFT + PAD 9
Turns the metronome on or off. See Every system setting for how it’s set up.
SHIFT + PAD 10
Steps through the count-in choices for sampling or pattern recording. See Give yourself a count-in and Get a count-in and a click.
SHIFT + PAD 11
Opens TEMPO SEL and turns on tap tempo, so you can tap the beat on SUB PAD. See Tap in a tempo and Choose and set the bank or project tempo.
SHIFT + PAD 12
Jumps to the GAIN tab of UTILITY MENU > SYSTEM. See Every system setting.
SHIFT + PAD 13
Opens UTILITY MENU. See Find your way around UTILITY.
SHIFT + PAD 14
Opens the import and export menu. See Bring audio in from an SD card and Save samples to an SD card.
SHIFT + PAD 15
Opens the pad settings. See Every pad setting.
SHIFT + PAD 16
Opens the effect settings. See Find your way around the effect settings.

Shift with a button or knob

SHIFT + BUS FX
Cuts the audio feeding the bus, leaving only what the effect is still putting out (MUTE BUS). See Cut the audio and leave the effect tails.
SHIFT + HOLD
Pauses the samples that are playing; do it again to resume. See Stop or pause everything.
SHIFT + EXT SOURCE
Opens the input settings screen. See Plug in a synth, mic or guitar.
SHIFT + SUB PAD
Opens SELECT PROJECT. See Switch between your 16 projects.
SHIFT + MARK
Stores the main settings of the BUS 1 and BUS 2 effects. See Edit an effect and keep your settings.Hold for at least three seconds
SHIFT + PITCH/SPEED
Opens the envelope screen, for fades in and out. See Fade a sample in and out.
SHIFT + START/END
Starts chop, which cuts the sample at its markers and deals the pieces out to pads. See Chop a sample across the pads.
SHIFT + PATTERN SELECT
Takes back what you just recorded. See Record a pattern as you play.While recording a pattern
SHIFT + ROLL
Steps to the next roll interval, which decides how fast a roll repeats. See Repeat a sample with rolls.
SHIFT + REVERSE + PAD
Mutes or unmutes that pad. See Mute a pad on the fly.
SHIFT + REVERSE + REMAIN
Latches SHIFT and REVERSE, so you can mute pads without holding them; EXIT cancels. See Mute a pad on the fly.
SHIFT + LOOP
Sets a ping-pong loop, which runs forwards and then backwards, over and over. See Loop forwards, backwards or both ways.
SHIFT + GATE
Flips GATE for every sample in the selected bank. See Gate and hold: what letting go of a pad does.
SHIFT + BPM SYNC
Flips BPM SYNC for every sample in the selected bank. See Lock a sample to the tempo.
SHIFT + REC
Drops into TR-REC, so you can add a sample to the running pattern. See Program steps with TR-REC.While a pattern plays
SHIFT + BANK
Opens BANK VOLUME, to balance that bank against the others. See Balance one bank against another.
SHIFT + REMAIN
Turns live mode on or off, which locks DEL, REC, RESAMPLE, COPY and MARK. See Lock the risky buttons for a gig.Hold for at least three seconds
SHIFT + COPY
Protects the selected bank’s samples and patterns against being changed or deleted by mistake; repeat to lift it. See Protect banks and delete samples.
SHIFT + VALUE
Chooses whether MARK calls up skip-back sampling or the looper. See Save what you just played with skip-back and Build up a loop live with the looper.Press the knob
SHIFT + RESAMPLE
Enters sample merge mode. See Merge samples into one.
SHIFT + RECORD SETTING
Enters sound generator mode. See Make your own sounds with the sound generator.
SHIFT + EXIT
Brings everything to a stop, samples and patterns alike. See Stop or pause everything.

From the community

SP-404MKII Creative Sampler and Effector Video Manual

Roland Cloud Academy

Roland product specialist PJ Bridger works through the unit in 93 minutes, with a chapter for almost every function. It was filmed at launch, so nothing added since then appears.

SP404 MKII Pad Shift Functions Explored

SPVIDZ

Goes through what each pad does with Shift held, from Fixed Velocity to EFX settings. Filmed at launch, but the pad layout hasn’t changed.

2.4Intermediate

What the Remain button does

On its own, REMAIN is an information button. Hold it and the screen shows the settings of the sample on the selected pad, or how much of the sample is left if it’s playing. Hold it while you press something else and it becomes one of the most useful modifiers on the 404, because it’s how you decide which samples get which effects.

Hold Remain and press

Hold REMAIN + PAD
Changes which bus that pad’s sample feeds. Each press flips between the bus selected with BUS FX and DRY. See Send each sample to a bus.
Hold REMAIN + BANK
Sets the bus for all of a bank’s samples in one go. See Send each sample to a bus.
Hold REMAIN + EXT SOURCE
Chooses the bus for INPUT and LINE IN. The button lights for BUS 1, blinks for BUS 2 and goes dark for DRY. See Decide where external audio goes.In sample mode
Hold REMAIN + EFFECT
Pins the effect edit screen, so it doesn’t time out; EXIT or REMAIN lets it go. See Edit an effect and keep your settings.
Hold REMAIN + BUS FX
Trades the effects on BUS 1 and BUS 2, and their settings go with them. See Turn an effect on from the keys.
Hold REMAIN + VALUE
Scrolls through the selected sample’s details, such as Color, PROJECT and NAME, ready to edit them. See Colour-code your samples and Rename samples and projects.Turn the knob

Keep REMAIN held for a moment and the pads light up to show where each sample is going. With the factory colours, orange is BUS 1, green is BUS 2 and white is DRY. You can change these with BUS COLOR in Every pad setting.

On the pitch/speed and envelope screens, REMAIN does a different job. Hold it while you change a parameter, and the change reaches every sample in the same bank. It’s the quick way to pull down a whole kit, or set a fade across a bank of slices. To do the same across a mute group, use COPY instead (Bank-wide jobs with Del and Copy).

What you can edit across a bank

ScreenParameters
Pitch/speed (Change a sample’s pitch and speed)SPEED, PITCH, VOLUME, PAN, BPM, BPM SYNC, GATE, LOOP, REVERSE
Envelope (Fade a sample in and out)ATTACK, HOLD, RELEASE, BPM SYNC, GATE, LOOP, REVERSE

Edit a whole bank at once

Hold REMAIN + CTRLS
Changes that knob’s parameter for every sample in the bank.On the pitch/speed or envelope screen
Hold REMAIN + BPM SYNC
Changes BPM SYNC for every sample in the bank.On the pitch/speed or envelope screen
Hold REMAIN + GATE
Changes GATE for every sample in the bank.On the pitch/speed or envelope screen
Hold REMAIN + LOOP
Changes LOOP for every sample in the bank.On the pitch/speed or envelope screen
Hold REMAIN + REVERSE
Changes REVERSE for every sample in the bank.On the pitch/speed or envelope screen

Other jobs for a plain press

Where you areWhat pressing REMAIN does
Chromatic modeMoves between LEGATO (blinks slowly), MONO (lit) and POLY (blinks quickly). See Play one sample across the pads in key.
Pattern record settingsChooses REC MODE: Real-Time (lit) or TR-REC (blinking). See Record a pattern as you play.
TR-RECSwitches MODE between TRIG and HOLD STEP. See Program steps with TR-REC.
Pattern chain screenTurns repeat playback on or off. See String patterns into a chain.
Pattern copy screenLets you pick which samples in the pattern to keep. See Swap, copy, extract and delete patterns.
Start/end screenDecides whether the start point stops at the loop and end points (on) or pushes them along (off). See Trim where a sample starts and stops.
Sound generator modePreviews the bus the signal goes to. See Make your own sounds with the sound generator.

From the community

10 Powerful SP-404-MK2 Shortcuts You NEED TO KNOW!

SPVIDZ

Ten held-button shortcuts filmed in 2026, from selecting pads silently to swapping bus effects and protecting a bank.

2.5Intermediate

What holding the Value knob does

You’ll turn and press VALUE all day, but it also works as a modifier if you hold it down. These shortcuts are mostly performance moves: picking a pad without making a sound while the music plays, or stabbing an effect in for a single beat.

Hold Value and press

Hold VALUE + PAD
Picks a sample silently, or picks a pattern without starting it when PATTERN SELECT is lit.
Hold VALUE + EFFECT
Makes the effect button momentary, so the effect is on only while you keep it pressed. See Apply an effect only while you hold its key.
Hold VALUE + CTRLS
Edits the effect’s sub-parameters, on effects that have them. See Edit an effect and keep your settings.
Hold VALUE + BUS FX
Takes BUS 3 and BUS 4 out of the sound for now, without changing your FAVORITE setting. See Set the effects on BUS 3 and BUS 4 and Load a saved BUS 3 and BUS 4 set-up.
Hold VALUE + SUB PAD
Evens out the tiny timing gaps when you trigger several samples together.
Hold VALUE + GATE
Turns one-shot playback on or off. See Play a sample through without interruption.

Other buttons that team up with the knob

From the community

10 Powerful SP-404-MK2 Shortcuts You NEED TO KNOW!

SPVIDZ

Ten held-button shortcuts filmed in 2026, from selecting pads silently to swapping bus effects and protecting a bank.

2.6Intermediate

Bank-wide jobs with Del and Copy

Pressed on their own, DEL and COPY deal with one pad at a time (Protect banks and delete samples, Swap and copy pads and banks). Hold one and press something else and it reaches much further. That makes these handy for clearing the decks or duplicating a bank to try ideas on, and it’s also why they deserve some care.

Hold Del and press

DEL + EXIT
Opens DELETE BANK, to clear all the samples or patterns in a bank. See Protect banks and delete samples and Swap, copy, extract and delete patterns.
DEL + MARK
Wipes the effect moves captured with EFX MOTION REC from this pattern. See Automate your effect moves.On the pattern edit screen
DEL + REVERSE
Wipes the pad mute moves captured with PAD MUTE MOTION REC from this pattern. See Automate pad mutes.On the pattern edit screen

Hold Copy and press

COPY + EXIT
Opens the bank copy screen, to duplicate a whole bank of samples or patterns into another bank. See Swap and copy pads and banks and Swap, copy, extract and delete patterns.

On the pitch/speed and envelope screens, COPY works like REMAIN, but on a mute group instead of a bank. Hold it while you change a parameter, and the change reaches the other samples in the same mute group (Let samples cut each other off). That lets you treat a group of related sounds, such as a set of hi-hats, as a single instrument. The parameters are the same as for REMAIN (What the Remain button does).

What you can edit across a mute group

ScreenParameters
Pitch/speed (Change a sample’s pitch and speed)SPEED, PITCH, VOLUME, PAN, BPM, BPM SYNC, GATE, LOOP, REVERSE
Envelope (Fade a sample in and out)ATTACK, HOLD, RELEASE, BPM SYNC, GATE, LOOP, REVERSE

Edit a mute group at once

Hold COPY + CTRLS
Changes that knob’s parameter for the samples in the mute group.On the pitch/speed or envelope screen
Hold COPY + BPM SYNC
Changes BPM SYNC for the samples in the mute group.On the pitch/speed or envelope screen
Hold COPY + GATE
Changes GATE for the samples in the mute group.On the pitch/speed or envelope screen
Hold COPY + LOOP
Changes LOOP for the samples in the mute group.On the pitch/speed or envelope screen
Hold COPY + REVERSE
Changes REVERSE for the samples in the mute group.On the pitch/speed or envelope screen

One more held button: MFX

MFX + DJFX LOOPER
Shows the MFX list from effect 17 onwards, so the pads can pick those. See Pick any effect from the MFX list.
MFX + ISOLATOR
Shows the MFX list from effect 33 onwards, so the pads can pick those. See Pick any effect from the MFX list.

From the community

10 Powerful SP-404-MK2 Shortcuts You NEED TO KNOW!

SPVIDZ

Ten held-button shortcuts filmed in 2026, from selecting pads silently to swapping bus effects and protecting a bank.

2.7Advanced

How sound travels through the 404

Knowing the order in which the 404 treats sound answers practical questions, such as why an effect isn’t touching a sample, where to fix distortion and what ends up in a resample. There are two sources, your samples and the external inputs. Each one takes its own route to a shared set of bus effects and a mixer, and the mix then splits to the outputs.

From samples to the mixer

  1. A sample plays on a voice. The 404 has 32 voices to share among the project’s 160 samples.
  2. The voice applies the sample’s volume, pan and envelope, along with its pitch shift and speed.
  3. The sample’s bus setting sends the sound one of two ways. BUS 1 or BUS 2 leads into BUS FX, and DRY goes around BUS FX to the mixer.
  4. The output of BUS FX joins the mixer.

From the inputs to the mixer

  1. INPUT passes through the MIC/GUITAR switch and GAIN. LINE IN joins after this point, so those two controls only affect INPUT.
  2. The combined signal passes through the Attenuator, when it’s on, and then the Noise Gate.
  3. USB audio joins here if the USB IN setting is LINE IN.
  4. Everything goes through INPUT FX, then a LEVEL control, then the EXT SOURCE on/off switch.
  5. The INPUT BUS setting sends it on. BUS 1 or BUS 2 leads into BUS FX, and DRY goes straight to the mixer.

From the mixer to the outputs

  • USB audio joins the mix just after the mixer if USB IN is MIX OUT, so it skips INPUT FX and BUS FX.
  • The mix then splits into three feeds, and VOLUME sets the level of all three.
  • LINE OUT goes through a Limiter, its own gain setting, then a Clipper.
  • PHONES has its own Limiter, gain setting and Clipper.
  • USB only has a gain setting. It takes the mix from before USB audio joins, so audio arriving through MIX OUT isn’t sent back out over USB.

Sampling taps this path through the ROUTING setting, then a LEVEL control (Set up a recording). Mix takes the full mix after the mixer but before VOLUME, so it includes your bus effects and doesn’t change when you move VOLUME. ExtIn takes the external inputs just after the EXT SOURCE switch, so it includes INPUT FX but not BUS FX.

Inside BUS FX, BUS 1 and BUS 2 feed BUS 3 and BUS 4, and the DRY signal can optionally enter just before BUS 3. See Put BUS 1 and BUS 2 in series or in parallel and Find your way around the effect settings.

Putting this to use

If…Look at
A mic or guitar sounds distortedGAIN, which sits at the very start of the INPUT path (Plug in a synth, mic or guitar)
LINE IN sounds distortedThe Attenuator setting on the GAIN tab (Every system setting)
An input is noisyThe Noise Gate setting on the GAIN tab (Every system setting)
An effect isn’t touching a sampleWhether the sample is on DRY or the other bus (Send each sample to a bus)
One output is too quiet or too hotThe LINE OUT, PHONES OUT and USB OUT gain settings, which only affect their own output (Every system setting)
USB audio should skip the effectsSet USB IN to MIX OUT (Bring in audio from a computer or phone, Every system setting)
2.8Basics

When the screen shows an error

The 404’s error messages are short, and most of them have a simple fix. Find yours below. The one that calls for real care is Storage Error!, because the suggested fix can erase your work.

Error messages

MessageWhat’s wrongWhat to do
Battery Low!The batteries have almost run out.Fit fresh ones or move to the AC adaptor (Three ways to power it).
Unsupported FILEThe 404 can’t use this type of file.Check its extension, its format and the folder it’s in (Bring audio in from an SD card).
No SD CARD!The 404 can’t find a card, either because the slot is empty or the card isn’t pushed all the way in.Switch off, seat the card fully, and switch on again.
Unsupported SD Card!The card is a type the 404 doesn’t support.Format the card (Prepare an SD card).
SD CARD Protected!The card is set to write-protected.Release the lock switch on the left side of the card.
SD CARD Full!The card has no free space left.Clear out data you don’t need.
Internal Storage Full!The 404’s own storage is running out of room.Delete data you don’t need from the unit (Protect banks and delete samples, Copy and delete projects).
Storage Error!Something has gone wrong with the internal storage.Try a factory reset, and read the warning below first (Return the 404 to its factory state).
Protected!Bank protect is blocking what you tried to do.Switch to an unprotected bank, or lift the protection on this one (Protect banks and delete samples, Swap, copy, extract and delete patterns).
Max Length PatternThe pattern has reached the most notes the sequencer can record.Thin out the notes, or record a shorter pattern and split your part across more than one (Record a pattern as you play).