M-Audio Hammer 88

Frequently Asked Questions
18
Problem
Possible Cause and Solution
Even with no power supply problems, the
instrument still could not start up.
Check the hardware.
LEDS -- Not lighting
Check the power supply.
2. Check the AC jack, have it been connected reliably. A
poor contact would cause unsuccessful power supply
Button problems
Run “test 2 Buttons” to see if all button are OK (to enter
test mode refer “Key Combination Instruction” chapter
Keyboard problems
Run “test 3 Keyboard” to see if Keyboard is OK (to enter
test mode refer “Key Combination Instruction” chapter
Fader problems
Run “test 4 Fader” to see if all button are OK (to enter test
mode refer “Key Combination Instruction” chapter
Wheel problems
Run “test 5 Wheel” to see if all button are OK (to enter
test mode refer “Key Combination Instruction” chapter
Pedal problems
1. Check the pedal cable, has it been plugged into the
proper socket of the cabinet.
2. Run “test 6 Switch Pedal” and “test 7 Expression
Pedal “to see if Pedal is OK (to enter test mode refer “Key
Combination Instruction” chapter
USB MIDI device is unavailable from PC
software (e.g. MIDI-OX).
1. Check the USB MIDI jack, has it been connected
reliably. A poor contact would cause failed connection.