Syntaur Productions
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Products for the Roland
Jupiter Series
Replacement Keys - Parts
Keyboard Service Center


Replacement Keys
These plastic keys will replace broken ones on your keyboard. There are several different types of keys used on the Roland keyboards, so you will need to make sure you order the correct style (click on the link for your keyboard below). With the exception of the Top C note on the 61-note keyboards, all keys from octave to octave are identical, and all black keys within a given style are identical. In other words, a B note in the lowest octave uses the same key as a B note in any other octave. But the highest C note is different from the other C notes (see illustration below).

If you do not know the note names, on the 61-note keyboard shown below, the white keys from the bottom (left side) up are: C, D, E, F, G, A, B, and then the sequence repeats.

Roland Synth Notes

Click below to view keys for:
Jupiter 4   Jupiter 6   Jupiter 8   Jupiter-50   Jupiter-80



Parts
We stock both new and used parts; the individual item descriptions will specify whether a part is NEW or USED. All used electronic parts are tested and guaranteed working. This listing reflects our current inventory and is updated daily, so if a part is shown with a "Buy" button, we should have it in stock.

If a part is shown as Out of Stock, then we do not have it, and in most cases, we don't know when or even if we might have it again. Your best bet is to simply check back on our site occasionally. If a part is not listed on our site, then we do not carry that part. We can no longer research or special order parts that are not listed here, and we just don't have time to answer questions about parts that we don't carry.

We want to help you get the parts you need, but please do not ask us to help diagnose problems with your equipment. We simply don't have the resources to do this, and it is just not practical to diagnose repair issues without being able to test the equipment in person.

Jupiter Series
Roland Power Connector AC power connector, for Jupiter 6 (Part #4415)
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Battery Battery, for Jupiter 4 (Part #4486)
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Roland Jupiter 6 Battery Battery, for Jupiter 6 (Part #4370)
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Roland Jupiter 8 Battery Battery, for Jupiter 8 (Part #4550)
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Roland Bender Assembly Bender assembly, for Jupiter 4/6 (Part #3528)
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Roland Bender Assembly Bender assembly, for Jupiter 50/80 (Part #4666)
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Roland Bender Frame Bender frame, for Jupiter 50/80 (Part #5056)
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Roland Bender Lever Bender lever, for Jupiter 4, 6, or 8 (Part #4023)
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Roland Bender Lever Bender lever, for Jupiter 4, 6, or 8, clear (Part #5036)
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Roland Bender Lever Bender lever, for Jupiter 50/80 (Part #5054)
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Roland Bender PCB Bender PCB, for pitch, for Jupiter 50/80 (Part #5059)
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Roland Bender PCB Bender PCB, for modulation, for Jupiter 50/80 (Part #5060)
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Roland Bender Plate Bender plate, for Jupiter 4/6 (Part #3549)
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Roland Bender Plate Bender plate, for pitch, for Jupiter 50/80 (Part #5057)
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Roland Bender Plate Bender plate, for modulation, for Jupiter 50/80 (Part #5058)
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Roland Bender Potentiometer Bender potentiometer, for Jupiter 4/6 (Part #3646)
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Roland Bender Potentiometer Bender potentiometer, pitch, for Jupiter 50/80 (Part #3029)
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Roland Bender Spring Bender spring, for Jupiter 4/6 (Part #3548)
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Roland Bender Spring Bender spring, pitch centering, for Jupiter 50/80 (Part #4956)
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Roland Bender Spring Bender spring, modulation, for Jupiter 50/80 (Part #5055)
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Roland Jupiter 6 Button Button, clear, for Jupiter 6 (Part #1930)
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Roland Jupiter 6 Button Button, white, for Jupiter 6 bender panel, VCO-1, VCO-2, Wide (Part #2493)
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Roland Jupiter-50 LCD Display Display, for Jupiter-50 (Part #2151)
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Roland Encoder Encoder, for Jupiter 50/80 (Part #3633)
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Roland Encoder Knob Encoder knob, for Jupiter 50 (Part #3027)
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Integrated Circuit IC, 3046 transistor array, for Jupiter 8 (Part #3306)
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Integrated Circuit IC, 4001 quad gate (Part #3304)
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Integrated Circuit IC, 4011 quad gate (Part #3391)
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Integrated Circuit IC, 4013 flip-flop (Part #3322)
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Roland IC IC, 4016 quad analog switch (Part #3302)
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Integrated Circuit IC, 4025 3-input NOR gate (Part #2715)
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Integrated Circuit IC, 4028 decoder (Part #1945)
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Integrated Circuit IC, 4030 quad exclusive OR gate (Part #3303)
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Integrated Circuit IC, 4049 hex inverter/buffer (Part #2382)
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Integrated Circuit IC, 4050 hex buffer/converter (Part #1775)
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Integrated Circuit IC, 4051 multiplexer (Part #4319)
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Integrated Circuit IC, 4053 multiplexer switch (Part #3413)
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Integrated Circuit IC, 4066 quad bilateral switch (Part #3723)
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Integrated Circuit IC, 4069 hex inverter (Part #3994)
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Integrated Circuit IC, 4558 dual op amp (Part #3387)
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Integrated Circuit IC, 555 timer (Part #2581)
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Integrated Circuit IC, 6012 digital-to-analog converter (Part #5065)
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Integrated Circuit IC, 74LS00 quad gate (Part #3429)
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Integrated Circuit IC, 74LS02 quad NOR gate (Part #1757)
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Integrated Circuit IC, 74LS04 hex inverter (Part #3147)
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Integrated Circuit IC, 74LS174 flip-flop (Part #3149)
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Integrated Circuit IC, 74LS74 dual flip-flop (Part #3396)
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Roland VCA Chip BA662 IC, BA662 VCA chip (Part #4339)
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Integrated Circuit IC, CEM3340 oscillator chip (Part #3926)
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Curtis 3360 VCA Chip IC, CEM3360 VCA chip, for Jupiter 6 (Part #4063)
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Integrated Circuit IC, D444C SRAM chip (Part #1891)
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Roland VCF Chip IR3109 IC, IR3109 VCF chip (Part #4243)
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Integrated Circuit IC, LM311 comparator (Part #2560)
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Integrated Circuit IC, MN3004 low-noise BBD (Part #5215)
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Integrated Circuit IC, TC40H000P quad NAND gate (Part #3398)
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Integrated Circuit IC, TC40H138 decoder/demultiplexer (Part #2661)
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Integrated Circuit IC, TC5517APL static CMOS RAM (Part #3393)
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Integrated Circuit IC, TL064 quad op amp (Part #2582)
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Integrated Circuit IC, TL072 op amp (Part #3388)
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Integrated Circuit IC, TL081 op amp (Part #4260)
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Integrated Circuit IC, TL082 op amp (Part #3423)
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Integrated Circuit IC, UA726HC transistor pair (Part #5704)
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Roland Jupiter 4 Key Bracket Key bracket, 5-note, for Jupiter 4 (Part #4512)
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Roland Jupiter 4 Key Bracket Key bracket, 7-note, for Jupiter 4 (Part #4511)
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Roland Jupiter 4 Key Contact Assembly Key contact assembly, single bus bar guide, for Jupiter 4 (Part #4506)
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Roland Jupiter 4 Key Contact Assembly Key contact assembly, two bus bar guides, for Jupiter 4 (Part #4513)
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Roland Jupiter 4 Key Spring Key return spring, for Jupiter 4 (Part #KYSP36)
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Roland Jupiter 8 Key Spring Key return spring, for Jupiter 6 or 8 (Part #KEYSP7)
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Roland Jupiter 4 Rotary Knob Knob, for Jupiter 4 Volume, VCO Range, VCO Waveform (Part #3224)
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Roland Jupiter 6 Rotary Knob Knob, larger, for Jupiter 6 (Part #1396)
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Roland Jupiter 6 Rotary Knob Knob, smaller, for Jupiter 6 (Part #3694)
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Roland Jupiter Rotary Knob Knob, for Jupiter 8 (Part #4384)
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Roland Knob Knob, for Jupiter 50 Control (Part #3979)
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Roland Jupiter Rotary Knob Knob, for Jupiter 80 (Part #6638)
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Roland Phone Jack Phone jack, for Jupiter 6, all except Phones and Arp Clock In (Part #4546)
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Roland Phone Jack Phone jack, for Jupiter 6 Arp Clock In (Part #1983)
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Roland Jupiter 6 Headphone Jack Phone jack, for Jupiter 6 Phones (Part #4178)
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Roland Phone Jack Phone jack, for Jupiter 80, all except Right Output (Part #4177)
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Roland Phone Jack Phone jack, for Jupiter 80 Right Output (Part #3634)
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Roland Jupiter 6 Potentiometer Potentiometer, 100KB rotary, for Jupiter 4, tuning (Part #1554)
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Roland Jupiter 6 Potentiometer Potentiometer, 100KB rotary, for Jupiter 6, all except VCO and VFC pots on bender panel (Part #3370)
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Roland Jupiter 6 Potentiometer Potentiometer, 10KB rotary, for Jupiter 6, VCO and VCF (on bender panel) (Part #3371)
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Roland Jupiter 8 Potentiometer Potentiometer, for Jupiter 8 Master Volume (Part #3632)
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Roland Jupiter 8 Potentiometer Potentiometer, 10KB, for Jupiter 8 (Part #1727)
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Roland Jupiter 8 Potentiometer Potentiometer, 50KACx2, for Jupiter 8 Balance (Part #3631)
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Roland Jupiter 8 Potentiometer Potentiometer, 50KC, for Jupiter 8 Portamento (Part #1745)
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Roland Jupiter 8 Potentiometer Potentiometer, 50KB rotary with center tap, for Jupiter 8 (Part #3613)
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Roland Jupiter 8 Potentiometer Potentiometer, 500KA, for Jupiter 8 LFO Mod Rise Time (Part #5258)
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Roland Potentiometer Potentiometer, for Jupiter 50 Display Contrast (Part #3683)
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Roland Volume Potentiometer Potentiometer, for Jupiter 50/80 Volume (Part #2388)
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Roland Power Adapter Power adapter, for Jupiter 50 (Part #2512)
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Roland Power Cord Power cord, for Jupiter 6 (Part #PCJ)
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Roland Power Cord Power cord, for Jupiter 80 (Part #PC)
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Roland Power Switch Power switch, for Jupiter 4 (Part #3916)
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Roland Switch Cap Power switch cap, for Jupiter 4 (Part #2228)
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Roland Jupiter 6 Tact Switch Pushbutton tact switch, for Jupiter 6 (Part #3568)
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Roland Jupiter 8 Tact Switch Pushbutton tact switch, for Jupiter 8 (Part #4376)
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Tact Switch Pushbutton tact switches, set of 10, for Jupiter 8 (Part #4376X)
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Roland Jupiter 8 Tact Switch Pushbutton tact switch with actuator, for Jupiter 8 (Part #1777)
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Roland Tact Switch Pushbutton tact switch, for Jupiter 80 (smaller buttons only) (Part #4478)
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Tact Switch Pushbutton tact switches, set of 10, for Jupiter 80 (smaller buttons only) (Part #4478X)
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Roland Tact Switch Pushbutton tact switch, for Jupiter 80 (larger buttons only) (Part #1469)
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Roland Rubber Foot Rubber foot, for Jupiter 6 (Part #4357)
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Roland Rubber Foot Rubber foot, for Jupiter 80 (Part #4295)
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Roland Jupiter 6 Slider Slide potentiometer, for Jupiter 4, all except Arp Rate, Delay Time, LFO Bend (Part #1379)
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Roland Jupiter 6 Slider Slide potentiometer, for Jupiter 6 (Part #3344)
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Roland Jupiter 6 Service Kit Slide pot kit, for Jupiter 6 (Part #KITJP6)
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Roland Slider Potentiometer Slide potentiometer, for Jupiter 50, all (Part #4909)
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Roland Slider Potentiometer Slide potentiometer, for Jupiter 80, all (Part #5563)
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Roland Slide Switch Slide switch, for Jupiter 6, for both rear panel switches (Part #2592)
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Roland Jupiter 4 Slider Knob Slider knob, for Jupiter 4 (Part #3225)
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Roland Jupiter 6 Slider Knob Slider knob, for Jupiter 6 (Part #3749)
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Roland Jupiter 6 Slider Knob Kit Slider knob set, for Jupiter 6 (Part #3749S)
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Roland Jupiter 8 Slider Knob Slider knob, for Jupiter 8 (Part #4367)
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Roland Slider Knob Slider knob, for Jupiter 50/80 (Part #4888)
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Roland Slide Switch Switch, 2-position, for Jupiter 4 VCO Sub (Part #2461)
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Roland Jupiter 8 Switch Switch, 2-position, for Jupiter 8 (Part #4642)
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Roland Jupiter 8 Switch Switch, 3-position, for Jupiter 4/8 (Part #4484)
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Roland Jupiter 8 Rotary Switch Switch, 4-position rotary, for Jupiter 4/8 (Part #3592)
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Roland Slide Switch Switch, 3-position slide, for Jupiter 8 (Part #2462)
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Roland Jupiter 8 Switch Switch, 4-position slide, for Jupiter 8 (Part #3616)
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Roland Jupiter 8 Switch Actuator Switch actuator, for Jupiter 8 panel buttons (Part #3359)
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Roland Jupiter 8 Switch Cap Switch cap, red, for Jupiter 8 (Part #2533)

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Roland Jupiter 8 Switch Cap Switch cap, orange, for Jupiter 8 (Part #2534)

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Roland Jupiter 8 Switch Cap Switch cap, white, for Jupiter 8 (Part #2536)
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Roland Jupiter 8 Switch Cap Switch cap, yellow, for Jupiter 8 (Part #2535)
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Roland Jupiter 8 Switch Cap Switch cap, green, for Jupiter 8 (Part #2537)
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Roland Jupiter 8 Switch Cap Switch cap, light blue, for Jupiter 8 (Part #2538)
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Roland Jupiter 8 Switch Cap Switch cap, dark blue, for Jupiter 8 (Part #2539)
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Voltage Regulator Voltage regulator, 78L05 (Part #2339)
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