User manual ROLAND GEB-7 MANUAL 2

[. . . ] AC Adaptor Jack Accepts connection of an AC Adaptor (optionally available BOSS PSA-Series). By using an AC Adaptor, you can play without being concerned about how much battery power you have left. * You may find that it is a good idea to keep a battery installed in the unit even while using an adaptor. That way your playing won't be disrupted even if the adaptor is accidentally disconnected. * If you are going to use an AC adaptor, be sure to use the specified unit (BOSS PSA-Series). [. . . ] * To prevent malfunction and/or damage to speakers or other devices, always turn down the volume, and turn off the power on all devices before making any connections. * If there are batteries in the unit while an AC adaptor is being used, normal operation will continue should the line voltage be interrupted (power blackout or power cord disconnection). * Once the connections have been completed, turn on power to your various devices in the order specified. By turning on devices in the wrong order, you risk causing malfunction and/or damage to speakers and other devices. When powering up: Turn on the power to your guitar amp last. When powering down: Turn off the power to your guitar amp first. * Always make sure to have the volume level turned down before switching on power. Even with the volume all the way down, you may still hear some sound when the power is switched on, but this is normal, and does not indicate a malfunction. * When operating on battery power only, the unit's indicator will become dim when battery power gets too low. Replace the battery as soon as possible. * The CHECK indicator shows whether the effect is being applied or not. It does not indicate whether the power to the device is on or not. 8 OPERATING THE UNIT 1. When you have made the necessary 3 4 connections, set the knobs as shown in the illustration. 2. Depress the pedal switch to turn the effect on. (Make sure that the CHECK Indicator lights. ) 3. Adjust the tone using the relevant Equalizer Control Knobs. 4. Adjust the output level using the Level Control Knob, to minimize the level difference between the effect and direct sounds. 9 CHANGING THE BATTERY When the indicator goes dim or no longer lights while an effect is on, it means that the battery is nearly dead and must be replaced. Replace the battery following the steps below. 1. Loosen the thumbscrew at the front of the pedal, then lift the pedal upwards to open the unit. * The thumbscrew can be left in the pedal while changing the battery. Thumbscrew Pedal Spring Base 2. Remove the old battery from the battery housing, and remove the snap cord connected to it. [. . . ] CHECK Indicator (serves also as battery check indicator) Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INPUT Jack OUTPUT Jack AC Adaptor Jack (DC 9 V) Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . DC 9 V: Dry Battery 9 V type (6F22/9 V), AC Adaptor Current Draw . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]