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Patches Cannot Be Switched . Is the ME-20 in Memory mode? > In Memory mode, the display indicates the bank, the pedal indicators show the current patch, and the effect-select indicators light. Conditions other than these mean the ME-20 is in another mode, so patches cannot be changed. First switch the ME-20 to Memory mode, then continue (p. 23). The Expression Pedal Switch Cannot Be Turned On or Off The Volume Pedal Cannot Reduce the Volume Completely . Could the expression pedal be out of adjustment? > Although the unit’s expression pedal has been set for optimal operation at the factory, extended use and certain operating environments can result in the pedal going out of adjustment. Adjust the expression pedal (p. 30). Specifications Specifications . AD Conversion 24-bit + AF method (*) . DA Conversion 24-bit . Sampling Frequency 44.1 kHz . Patches 30 (user) . Nominal Input Level INPUT: -10 dBu AUX IN: -18 dBu . Input Impedance INPUT: 1 M. AUX IN: 22 k. . Nominal Output Level -10 dBu . Output Impedance 2 k. . Display 7 segments, 2 characters LED . Control OD/DS/1 Pedal MOD/2 Pedal DELAY/3 Pedal Expression Pedal . Jacks INPUT jack (1/4” phone type) AUX IN jack (Stereo miniature phone type) OUTPUT jacks L/MONO, R (1/4” phone type) PHONES jack (Stereo 1/4” phone type) FOOT SW jack (1/4” TRS phone type) AC Adaptor jack . Power Supply DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor (PSA series: Optional) . Current Draw 90 mA * Expected battery life under continuous use: Alkaline: 13 hours, Carbon: 3.5 hours These figures will vary depending on the actual conditions of use. . Dimensions 294 (W) x 179 (D) x 54 (H) mm 11-5/8 (W) x 7-1/16 (D) x 2-1/8 (H) inches Maximum height: 294 (W) x 179 (D) x 74 (H) mm 11-5/8 (W) x 7-1/16 (D) x 2-15/16 (H) inches . Weight 1.6 kg / 3 lbs 9 oz (including batteries) . Accessories Owner’s Manual Dry Batteries (Alkaline: LR6 (AA) type) x 6 Roland Service (Information Sheet) . Options AC Adaptor: BOSS PSA series Footswitch: BOSS FS-6, FS-5U Connection Cable: PCS-31 (Roland) (Stereo 1/4” phone plug-1/4” phone plug x 2) * 0 dBu = 0.775 Vrms * In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice. (*) AF method (Adaptive Focus method) This is a proprietary method from Roland/ BOSS that vastly improves the signal-to-noise (S/N) ratio of the A/D and D/A converters. Index Index 0–99 ms DELAY ........................... 19 100–700 ms DELAY ...................... 19 A AUX IN ...................................... 10 B Bank ..................................... 23, 25 BLUES ........................................ 17 Bypass ........................................ 14 C CHORUS .................................... 18 COMPRESSOR ............................ 17 D DC IN ......................................... 10 DELAY ....................................... 19 Display ......................................... 8 DISTORTION .............................. 17 E Effect .......................................... 16 Effect Select ................................... 8 Effect/Number Pedal ..................... 9 EQ ............................................. 20 Equalizer .................................... 20 EDIT/EXIT ................................... 8 Expression Pedal ..................... 9, 30 EZ EDIT ................................. 8, 22 F Factory Reset ............................... 29 FLANGER .................................. 18 FOOT SW ................................... 10 Foot Switch Pedal ........................ 27 Footswitch .................................. 10 FUZZ ......................................... 17 H Headphone ................................. 10 I INPUT ........................................ 10 M Manual mode ............. 9–10, 23, 27 MASTER LEVEL ..................... 9, 21 Memory mode ............ 9–10, 23, 27 METAL ...................................... 17 MOD ......................................... 18 Modulation ................................ 18 N Noise Suppressor ........................ 21 NS ............................................. 21 O OD/DS ...................................... 17 OD/DS SOLO ......................... 9, 16 OUTPUT .................................... 10 OVERDRIVE .............................. 17 P Parameter ............................... 7, 16 Patch ......................................... 23 Patch Change .............................. 25 Patch Edit Mode .......................... 26 Pedal Indicator .............................. 9 PHASER .................................... 18 PHONES .................................... 10 R REVERB ..................................... 19 ROTARY .................................... 18 S Saving .................................. 23–24 SOLO ......................................... 16 T THRESHOLD ............................. 21 TREMOLO ................................. 18 Tuner .................................