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IMPORTANT NOTES

 CAUTION

When disconnecting the power cord, grasp it by the 

plug

To prevent conductor damage, always 

grasp the power cord by its plug when 

disconnecting it from this unit or from a 

power outlet.

Periodically clean the power plug

An accumulation of dust or foreign objects 

between the power plug and the power 

outlet can lead to fire or electric shock.
At regular intervals, be sure to pull out 

the power plug, and using a dry cloth, 

wipe away any dust or foreign objects that may have 

accumulated.

Disconnect the power plug whenever the unit will 

not be used for an extended period of time

Fire may result in the unlikely event that a 

breakdown occurs.

 CAUTION

Route all power cords and cables in such a way as 

to prevent them from getting entangled

Injury could result if someone were to 

trip on a cable and cause the unit to fall 

or topple.

Avoid climbing on top of the unit, or placing heavy 

objects on it

Otherwise, you risk injury as the result of 

the unit toppling over or dropping down.

Never connect/disconnect a power plug if your 

hands are wet

Otherwise, you could receive an electric 

shock.

Disconnect all cords/cables before moving the unit

Before moving the unit, disconnect the 

power plug from the outlet, and pull out all 

cords from external devices.

 CAUTION

Before cleaning the unit, disconnect the power 

plug from the outlet

If the power plug is not removed from the 

outlet, you risk receiving an electric shock.

Whenever there is a threat of lightning, disconnect 

the power plug from the outlet

If the power plug is not removed from the 

outlet, you risk receiving an electric shock.

IMPORTANT NOTES

Power Supply

•  Do not connect this unit to same electrical outlet 

that is being used by an electrical appliance that 

is controlled by an inverter or a motor (such as a 

refrigerator, washing machine, microwave oven, or 

air conditioner). Depending on the way in which 

the electrical appliance is used, power supply noise 

may cause this unit to malfunction or may produce 

audible noise. If it is not practical to use a separate 

electrical outlet, connect a power supply noise filter 

between this unit and the electrical outlet.

Placement

•  Using the unit near power amplifiers (or other 

equipment containing large power transformers) 

may induce hum. To alleviate the problem, change 

the orientation of this unit; or move it farther away 

from the source of interference.

•  This unit may interfere with radio and television 

reception. Do not use this unit in the vicinity of such 

receivers.

•  Noise may be produced if wireless communications 

devices, such as cell phones, are operated in the 

vicinity of this unit. Such noise could occur when 

receiving or initiating a call, or while conversing. 

Should you experience such problems, you should 

relocate such wireless devices so they are at a 

greater distance from this unit, or switch them off.

•  When moved from one location to another where 

the temperature and/or humidity is very different, 

water droplets (condensation) may form inside 

the unit. Damage or malfunction may result if you 

attempt to use the unit in this condition. Therefore, 

before using the unit, you must allow it to stand 

for several hours, until the condensation has 

completely evaporated.

•  Depending on the material and temperature of the 

surface on which you place the unit, its rubber feet 

may discolor or mar the surface. 

•  Do not place containers or anything else containing 

liquid on top of this unit. Also, whenever any liquid 

has been spilled on the surface of this unit, be sure 

to promptly wipe it away using a soft, dry cloth.

Maintenance

•  Never use benzine, thinners, alcohol or solvents of 

any kind, to avoid the possibility of discoloration 

and/or deformation.

Additional Precautions

•  Use a reasonable amount of care when using the 

unit’s buttons, sliders, or other controls; and when 

using its jacks and connectors. Rough handling can 

lead to malfunctions.

•  When disconnecting all cables, grasp the connector 

itself—never pull on the cable. This way you will 

avoid causing shorts, or damage to the cable’s 

internal elements.

•  A small amount of heat will radiate from the unit 

during normal operation.

•  To avoid disturbing others nearby, try to keep the 

unit’s volume at reasonable levels.

•  Do not use connection cables that contain a built-in 

resistor.

Intellectual Property Right

•  Roland and BOSS are either registered trademarks 

or trademarks of Roland Corporation in the United 

States and/or other countries.

•  Company names and product names appearing 

in this document are registered trademarks or 

trademarks of their respective owners.

Summary of Contents for Jazz Chorus-40

Page 1: ...o independent power amps and two custom designed 10 inch speakers the JC 40 delivers a stereo effect and sound that won t get buried in the ensemble 5 5The enclosure is designed for strength and durability made of hardened fiberboard and equipped with corner protectors 5 5If a separately sold footswitch is connected you can turn chorus vibrato reverb and distortion on off with your foot JC 40 Owne...

Page 2: ...ct Never allow foreign objects e g flammable objects coins wires or liquids e g water or juice to enter this product Doing so may cause short circuits faulty operation or other malfunctions Turn off the unit if an abnormality or malfunction occurs Immediately turn the unit off remove the power cord from the outlet and request servicing by your retailer the nearest Roland Service Center or an autho...

Page 3: ...ear power amplifiers or other equipment containing large power transformers may induce hum To alleviate the problem change the orientation of this unit or move it farther away from the source of interference This unit may interfere with radio and television reception Do not use this unit in the vicinity of such receivers Noise may be produced if wireless communications devices such as cell phones ...

Page 4: ...ulation FIXED chorus Turns chorus on The SPEED knob and DEPTH knob have no effect their settings are fixed 8 POWER switch Turns the power of the JC 40 on off When the power is on the indicator is lit Turning the Power On Off Once everything is properly connected be sure to follow the procedure below to turn on their power If you turn on equipment in the wrong order you risk causing malfunction or ...

Page 5: ... PHONES jack The sound that is input from the RETURN jacks is not affected by front panel controls 2 5 If you want controls 2 5 to affect this sound connect your equipment to the front panel INPUT L MONO R jacks Make connections after first checking the wiring diagrams of other equipment you intend to connect To prevent malfunction and equipment failure always turn down the volume and turn off all...

Page 6: ...cks 1 4 inch phone type LINE OUT L MONO R jacks 1 4 inch phone type PHONES jack Stereo 1 4 inch TRS phone type FOOT SWITCH CHORUS VIBRATO REVERB DISTORTION jacks 1 4 inch phone type EFFECT LOOP SEND jack 1 4 inch phone type EFFECT LOOP RETURN L MONO R jacks 1 4 inch phone type AC IN jack Power Consumption 43 W Dimensions 592 W x 251 D x 436 H mm 23 5 16 W x 9 15 16 D x 17 3 16 H inches Weight 15 8...

Page 7: ...RETURN L MONO RETURN R PRE AMP SEND SERIES PARALLEL BRIGHT VOLUME TREBLE MIDDLE BASS DISTORTION EFFECT LOOP EFFECT LOOP LOOP REVERB VIBRATO CHORUS INPUT OUTPUT RETURN L MONO RETURN R SEND EFFECT LOOP EFFECT LOOP EFFECT LOOP PRE AMP EXTERNAL EFFECT UNIT S L R REVERB VIBRATO CHORUS INPUT OUTPUT RETURN L MONO SEND EFFECT LOOP EFFECT LOOP RETURN R EFFECT LOOP PRE AMP EXTERNAL EFFECT UNIT S L R ...

Page 8: ......

Page 9: ...For EU Countries For China ...

Page 10: ...ce by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This device complies with Part 15 of the FCC Rules Operation is subject to the foll...

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