ZOOM GFX-3 Instruction Manual

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Troubleshooting
 No sound, or very low volume on the DRIVE module setting.
Y Is the power switch set to ON?
YAre [INPUT] jack and [PHONES/OUTPUT] jack  High noise levels
connected correctly to instrument and Y Adjust ZNR parameter. If problem persists, try
ampliŢer? reducing GAIN.
Y Is the shielded cable defective? If BOOSTER or COMP/ ISO module is used,
Y Is the GFX-3 set to the mute condition? try decreasing GAIN parameter of DRIVE
module.
Y Is the master level parameter set to a low
value?
Y Is the expression pedal pushed down?  Expression pedal on/off switching does
For some patches, the expression pedal controls thenot work properly.
volume. Set it to a suitable position. YTry the procedure described in "Calibrating the
Expression Pedal" on page 16.
 Sound is unnaturally distorted
Y Adjust level and GAIN parameters of effect  Bypassed sound is unnatural
modules. Y The Energize works also in the bypass
Y Set COMP/ ISO module to OFF. condition.
When a guitar with high output is used with theseSet the Energize to "oF."
effects, unwanted distortion may occur depending
SpeciŢcations
Effect Programs50typesMaximum output level +3 dBm
Effect Modules7 modulesOutput load impedance
Patch MemoryUSER: 60 patches10 kilohms or higher
PRESET: 60 patchesDisplay2-digit 7-segment LED display
Total 120 patches
Power Requirements
Sampling Frequency31.25 kHz AC adaptor9 V DC, center minus, 300 mA (ZOOM
A/D Conversion20-bit, 64-times oversamplingAD-0006)
D/A Conversion20-bit, 8-times oversampling Batteries4 x IEC R6 (size AA)
Continuous operation: approx.
Inputs11 hours (with alkaline batteries)
Guitar inputStandard mono phone jack
Rated input level -20 dBmExternal Dimensions323(W) x 175.5 (D) x 70 (H) mm
Input impedance 470 kilohmsWeight2.2 kg (without batteries)
Outputs* 0 dBm = 0.775 Vrms
Standard stereo phone jack* Design and speciŢcations are subject to change without notice.
(for line/headphones)
ZOOM CORPORATION
ITOHPIA Iwamotocho 2chome Bldg. 2F, 2-11-2, Iwamoto-cho,
Chiyoda-ku, Tokyo 101-0032, Japan
Web Site: http://www.zoom.co.jp
GFX-3 - 5000-1