9
PW-10(T)
TEST MODE
Required Items
1.
Generator
2.
Oscilloscope
3.
Noise meter
4.
Short plug (with a 47k ohm resistor built in)
5.
Monitor speaker (with an amplifier built in)
List of Test Items
1.
DSP and EEPROM check
2.
WAH RANGE volume check
3.
DRIVE volume check
4.
Pedal calibration
5.
BYPASS check
6.
CODEC (DAC L ch) check
7.
CODEC (DAC R ch) check
8.
CODEC (DAC MIX) check
9.
CODEC (ADC L ch) check
10.
CODEC (ADC R ch) check
11.
CODEC (ADC MIX) check
12.
Normal waveform check
13.
Noise check
14.
Battery operation check
Entering the Test Mode
1.
Set all the volume knobs to the left.
2.
Connect a DC plug to the AC adaptor jack while pressing down the
[MANUAL/MEMORY] button.
(The MEMORY indicator blinks red.)
3.
Press the [MANUAL/MEMORY] button twice while it is blinking red
(for 2 seconds).
(The MEMORY indicator lights up green, enabling to enter the first test
item.)
Note: The test mode cannot be entered unless all the volume knobs are set to
the left.
Note: The test mode cannot be entered unless the button is operated while the
indicator is blinking red.
Test Items
1. DSP and EEPROM check
1.
After entering the test mode, DSP/EEPRO check is performed
automatically.
(The MANUAL/MEMORY indicator lights up green while checking.)
2.
If no problem occurs, the “MANUAL/MEMORY” indicator lights up
yellow after about 5 seconds and the “ON/OFF” indicator lights up red.
3.
If any problem is present, the relevant indicator blinks in the following
manner:
4.
Input a square wave (2000Hz, 400mVp-p) and check the output
waveform (DSP through) with an oscilloscope.
fig.wave0_45
2. WAH RANGE volume check
1.
Input a square wave (2000Hz, 400mVp-p).
2.
Turn the volume knob from the lowest position to the center and to the
highest position.
The “MANUAL/MEMORY” indicator should light up, changing the
color from yellow to green and to red, in this order.
3.
Operate the volume knob to check that the oscillation of the output
waveform (DSP through) also changes from 0 to 400mVp-p or above.
4.
After confirming that the indicator lights up red at the highest volume
position, move on to [DRIVE] volume check.
(In [DRIVE] volume minimum value detection, [WAH RANGE] volume
maximum value detection is also performed. Leave the [WAH RANGE]
volume knob set to the highest position.)
3. DRIVE volume check
1.
Test in the same manner as for [WAH RANGE] volume check, and check
how the “MANUAL/MEMORY” indicator behaves as well as how the
output waveform (DSP through) changes.
4. Pedal calibration
1.
Press the [MANUAL/MEMORY] button to proceed to the test items in
the pedal calibration mode.
(All indicators go off.)
2.
Step down the pedal all the way back and hold it depressed.
Note: Accurate calibration cannot be performed if the pedal is off the base or
depressed beyond that point.
fig.test4-1_30
3.
Press the [MANUAL/MEMOY] button and check that the “MEMORY”
indicator lights up red.
Note: If the “MEMORY” indicator blinks red, go back to step 2 and check the
pedal position, and then perform checking again. If the indicator blinks
red each time checking is repeated, it indicates a faulty sensor circuit.
Indicator
behavior by
error type
MANUAL/MEMORY
blinking red:
DSP IRAM error
MANUAL/MEMORY
blinking yellow:
DSP ERAM error
MANUAL/MEMORY
blinking green:
DSP IPRAM error
ON/OFF
blinking red:
EEPROM error
