6. Test Procedure & Test Result
DPA2500/4000 TEST PROCEDURE
DSP Test
Instruments
1.
DMM
2.
Audio Analyze unit (VP-7724)
3.
Oscillograph
4.
PC with RS232 port
Test Procedure
Step1: Visual check
Visually check if the cosmetic of the amplifier and assembly are OK.
Step 2: Power supply test
z
Rated power
z
Make sure all the voltage values are correct, then turn off power.
Step 3: DSP Test
3.1 press the “ENTER” and “SEL” at the same time. The unit will enter the test modal and
check as following:
a.
All LEDs will light up in sequence.
b.
The display will show “8.8” .
3.2 Press the “ENTER” and “SEL” at the same time.
a.
Press “UP”, the display will show “1”.
b.
Press “DOWN”, the display will show “2”.
c.
Press “ENTER”, the display will show “3”.
d.
Press “SEL”, the display will show “4”.
Step4: Test EEPROM
4.1 Press “ENTER” and “SEL” again, the LED (HUM CANCEL) should be light up. After wait
about 50 seconds, check as following:
a.
If the display show “01” , the test is ok
b.
If the display show “E1”, the test fails.
Step5: Test RAM
5.1 Press “ENTER” and “SEL” at the same time again, the LED(NOISE GATE) will light up,
wait a few seconds, check as following:
a.
If the display show “02”, the test is ok.
b.
If the display show “E2”, the test fails .
Step 6. RS232 Port Test
6.1 Turn off the unit, then connect the computer and the amplifier via RS232 port, then turn on
the unit.
