Zoom AC-3 - Troubleshooting AC-3 Problems; Power and Sound Output Issues; Sound Distortion and Battery Problems; Effect Malfunction Troubleshooting

19
Troubleshooting
The unit will not power on
• Conrm that the POWER switch is set to
ON.
• If using batteries, confirm that they are
still charged.
There is no sound or output is very quiet
• Check the connections. (
→
P6, P17)
• Sound will not be output in the tuner is on.
(
→
P16)
There is a lot of noise
• Conrm that the shielded cable is not the
cause.
• Use a genuine ZOOM AC adapter.
The sound distorts strangely or has an odd timbre
• Adjust the amount of boost amplication.
(
→
P13)
• Set the pickup selection correctly for the
type of pickup. (
→
P8)
• Adjust the amount of compression. (
→
P12)
Batteries lose their charge quickly
• Conrm that you are not using manganese
batteries. Alkaline batteries should provide
about 3 hours of continuous operation.
• Confirm that the battery type setting is
correct. (
→
P16)
The effect is not working
• Adjust the parameter knobs. (
→
P14)
Specications
Source guitars 16 types
Target guitars 15 types
Effect types 9 types
Sampling frequency 44.1 kHz
A/D conversion 24-bit 128 x oversampling
D/A conversion 24-bit 128 x oversampling
Signal processing 32-bit
Frequency characteristics 20 Hz–20 kHz (+1 dB/-3 dB) (10 kΩ load)
Input Standard mono phone jack
Rated input level: -20 dBu
Input impedance: 10 MΩ
Outputs L/MONO/PHONES Standard stereo phone jack (combined line/headphone)
Maximum output level: Line +7 dBu (10 kΩ or more output impedance)
Headphones 8 mW + 8 mW (32 Ω load)
R Standard mono phone jack
Maximum output level: Line +7 dBu (10 kΩ or more output impedance)
BALANCED OUT-L XLR jack
Output impedance: 100 Ω (HOT-GND, COLD-GND), 200 Ω (HOT-COLD)
PRE/POST (switchable)
GND LIFT (switchable)
BALANCED OUT-R XLR jack
Output impedance: 100 Ω (HOT-GND, COLD-GND), 200 Ω (HOT-COLD)
GND LIFT (switchable)
S/N (equivalent input noise) 120 dBu
Noise oor (residual noise) -100 dBu
Control input FS01 Input
Power AC adapter: 9 V DC 500 mA center negative (ZOOM AD-16)
Batteries: 2 AA (about 3 hours continuous operation time using alkaline batteries)
External dimensions 158 mm(D) X 237 mm(W) X 52 mm(H)
USB USB MIDI USB Micro-B
Weight 1150 g(Not including batteries)
Options FS01 foot switch
Note: 0 dBu = 0.775 V