35
DGX-620/YPG-625
Test Descriptions, Judgment Criteria
LCD Display
TEST No.
Connect the foot switch (FC-4 or FC-5) to the [SUSTAIN] jack.
Check that the C3 note is output when the [START/STOP] button is pressed while stepping the
pedal and the C4 note is output when releasing the pedal. The sound stops when stepping the
pedal again. Check that the LCD displays “Pedal1 OK”. (OK:“Pedal1 OK”, NG:“Pedal1 NG”)
Checks the pitch bend wheel.
(First, it checks if the center position of the wheel is correct or not.)
Check that the C3 note is output when rotating the [PITCH BEND] wheel to minimum and the C4
note is output when rotating it to maximum.
(OK:“Pitch Bend OK”, NG:“Pitch Bend NG”, If the center position of the wheel
is not correct:“Pitch Bend C NG”)
Checks MIDI and USB.
Connect the PC with a USB-MIDI driver installed and the [USB TO HOST] terminal using a
USB cable, and execute the test.
(As for the PC, install a USB-MIDI driver in the PC and finish the THROUGH setup, in
advance.)
Check that the C4 note is output and the LCD displays “MIDI OK”.
(OK:“MIDI OK”, NG:“MIDI NG”)
Checks the ROM that is connected to the CPU.
The test result appears on the LCD. Check that the LCD displays “Rom OK”.
It takes about 20 seconds.
(OK:“Rom OK”, NG:“Rom NG”)
Check the RAM that is connected to the CPU.
The test results appear on the LCD. Check that the LCD displays “Ram OK”.
It takes about 5 seconds.
(OK:“Ram OK”, NG:“Ram NG”)
Checks the flash ROM that is connected to CPU bus.
The check result appears on the LCD. Check that the LCD displays “Flash Ram OK”.
It takes about 60 seconds.
(OK:“Flash Rom OK”, NG:“Flash Rom NG”)
All backup domains are initialized and it changes into a factory-shipments state when executing
this test.
Exit from the test program after executing this test.
Noise Check (in the normal mode)
Connect the level meter (with a JIS-C filter) to the [PHONES/OUTPUT] jack. (33 ohm load)
Set the [MASTER VOLUME] at maximum and check that the noise level is within the range
below.
PHONES L/R : less than -74.0 dBu
031 Pedal1 Chk
033 Pitch Bend Chk
037 MIDI Chk
041 Rom Chk2
042 Ram Chk2
045 Flash Rom Chk2
047 Factory set
048 Test Exit
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31
33
37
41
42
45
47
48
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* Note: As for the test no.41 - 45, it takes time. If you want to skip them, press the [+/YES] button several times to go to the test
no.47 (Factory Set).
