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Click-Less True-Bypass

BOSS CS-3 CompressionSustainer Install Guide 2010 Jack Deville Electronics LLC, all rights reserved

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ABOUT THIS MANUAL

This manual covers Click-Less True-Bypass installation for

the BOSS CS-3 Compression Sustainer.It is recommended that you read this manual in full and become familiar withthe installation procedure before beginning any work.

RECOMMENDED TOOL AND SUPPLY LIST: Click-Less True-Bypass installation kit Soldering station (with temperature control/regulation) Solder & Flux De-soldering braid or solder sucker Wire strippers Wire cutters Phillips head screwdriver Double-stick foam tape

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OVERVIEW

The BOSS CS-3 employs buffered electronic switching

comprised of four main circuit elements:

A buffer/driver circuit used to prevent loading of thesignal path and to drive the electronic switching circuit

Two FETs (field effect transistors) used to block/permitsignal flow through the bypass and effect circuits

A flip-flop circuit used to select which FET is ON/OFF(BYPASS/EFFECT) and route the signal appropriately A mechanical momentary contact switch used to controlthe flip-flop circuit

Installing Click-Less True-Bypass requires circumvention ofthe electronic switching system and re-routing the signalpath through the Click-Less PCB.

Steps 1 & 2 detail circumvention of the flip-flop circuit.Steps 3 7 detail re-routing signal flow through the Click-Less PCB and final installation procedures.

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Step 1:Remove the backing plate and flip the effect PCB upright asshown below:

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Step 2:Locate, de-solder and remove R20 (56K resistor) from theeffect PCB:

REMOVE

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Step 3:De-solder the input, output, LED wires and switch wiresfrom the effect PCB and jack lugs:

Input wire Hole 18 LED + wire Hole 15 Output wire Hole 12 LED wire Hole 11 Switch wire 1 Hole 1 Switch wire 2 Jack lug (not shown above)

INPUT LED+ OUTPUT LED- SWITCH 1

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Step 4:Solder four of the supplied wires to the Click-Less PCBpads following the diagram below:

NOTE: Wire color employed may vary. Colors indicated below are providedfor reference only.

+ power pad. (Red wire shown) G ground pad. (Black wire shown) R return pad. (Blue wire shown) S send pad. (Blue wire shown)

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Step 5:Connect the Click-Less PCB wires to the effect PCB:

S Send wire to Hole 18 + Power wire to Hole 15 R Return wire to Hole 12

S + R

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Step 6:Solder the remaining wires to the Click-Less PCB padsfollowing the diagram below:

Switch 1 wire to leftmost S pad on Click-Less PCB(shown in purple)

Switch 2 wire to adjacent S pad on Click-Less PCB(shown in black)

LED + wire to L pad on Click-Less PCB (shown in red) G ground wire to suitable ground* LED wire to a suitable ground* Output wire to O pad on Click-Less PCB (shown in

orange)

Input wire to I pad on Click-Less PCB (shown inorange)

*The output jack sleeve lug serves as a convenient ground.

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Step 7:Apply double stick tape to the back of the Click-Less PCBtaking care to ensure that no leads are poking through the

tape, and secure the Click-Less PCB inside the chassis at asuitable location. Recommended placement is on the insideof the chassis, just below the output jack. See photobelow:

Congratulations! Your BOSS CS-3 Compression Sustainerhas been converted to Click-Less True-Bypass.