Roland JC-120 manual

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A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Roland JC-120, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

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Unfortunately, only a few customers devote their time to read an instruction of Roland JC-120. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

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First and foremost, an user manual of Roland JC-120 should contain:
- informations concerning technical data of Roland JC-120
- name of the manufacturer and a year of construction of the Roland JC-120 item
- rules of operation, control and maintenance of the Roland JC-120 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Roland JC-120 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Roland JC-120, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Roland service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Roland JC-120.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Roland JC-120 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

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Table of contents for the manual

  • Page 1

    Owner’s Manual Thank you for purchasing the Roland JC-120 JAZZ CHORUS Guitar Amplifier. To take full advantage of this amplifier, and to ensure years of trouble-free service, please read this Owner’s Manual in its entirety. Features • 120 watts of output power; 2 channels of 60 watts each. Channel 2 is equipped with Roland’s renowned chorus[...]

  • Page 2

    CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ATTENTION : RISQUE DE CHOC ELECTRIQUE NE PAS QUVRIR CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to aler[...]

  • Page 3

    3 USING THE UNIT SAFELY • Before using this unit, make sure to read the instructions below, and the Owner's Manual. ......................................................................................................................................... • Do not open or perform any internal modifica- tions on the unit. ....................[...]

  • Page 4

    4 IMPORTANT NOTES In addition to the items listed under “IMPORTANT SAFETY INSTRUCTIONS” and “USING THE UNIT SAFELY” on pages 2 and 3, please read and observe the following: Power Supply • Do not use this unit on the same power circuit with any device that will generate line noise (such as an electric motor or variable lighting system). ?[...]

  • Page 5

    5 Panel Description 1. Input Jacks Two input jacks are provided. For a guitar with a standard output, use the “HIGH” input. For very high output instruments, use the “LOW” input. 2. BRI (Bright) Switch When this switch is set to ON, a bright, clear sound can be obtained. 3. VOLUME Knob Clockwise rotation will increase the amplifier’s over[...]

  • Page 6

    6 16.CH-2 EFFECT LOOP LEVEL Switch This switch selects the input/output level for the Channel 2 effects loop. Change the switch position to accommodate the effects device you are using. When the connected unit’s input/output level is high, set the switch to “+4 dBm,” and when that level is low, set the switch to “-20 dBm.” 17.CH-2 EFFECT [...]

  • Page 7

    7 Specifications Rated Power output 120 W (60 W + 60 W) / 8 Ω + 8 Ω Speakers 30 cm (12 inches) + 30 cm (12 inches) Power Supply AC 117 V, AC 230 V or AC 240 V Power Consumption 110 W (117 V, 230 V, 230 VE, 240 VA) Nominal Input Level -30 dBm / 680 k Ω 0 dBm = 0.775 V Connectors CH-1 Input Jacks (HIGH, LOW) CH-2 Input Jacks (HIGH, LOW), FOOT S[...]

  • Page 8

    03905412 ’05-03-1TP[...]