30
DGX-220/YPG-225
Test Descriptions, Judgment Criteria
LCD Display
TEST No.
6
11
13
--
--
14
15
20
21
28
29
31
33
006 FRomChk1
011 TG1 Chk
013 Pit Chk
--
--
014 Output R
015 Output L
020 SW Chk
021 A.LedChk
028 LCD On
029 LCD Off
031 PD1 Chk
033 PB Chk
Checks the flash ROM that is connected to CPU bus.
The check result appears on the LCD. Check that the LCD displays "FRom OK".
(OK:"FRom OK", NG:"FRom NG")
Outputs the sine wave by changing the channels in sequence from C2 to G4.[32 notes]
Check the sound by hearing that there is no noise or abnormal sound.
After auto-scaling is finished, individual keys can be played.
(If playing two or more keys simultaneously, the first pressed key has priority to make a sound.)
Connect the frequency counter to the [PHONES/OUTPUT] jack. (L or R)
Sets PAN to Center and produces a signal at 440.14 Hz
±
0.22 Hz.
Check that the correct signal is produced.
Output Level Check (33 ohm load)
Connect the level meter(with a JIS-C filter) to the [PHONES/OUTPUT] jack. (L and R)
Set the [MASTER VOLUME] at maximum and check the output level.
PHONES L : -6.0 dBu PHONES R : -6.0 dBu (dBu=dBm)
Volume Decline Value Check (33 ohm load)
Connect the level meter(with a JIS-C filter) to the [PHONES/OUTPUT] jack. (L and R)
Set the [MASTER VOLUME] at minimum and check the output level.
PHONES L : less than -70.0 dBu PHONES R : less than -70.0 dBu (dBu=dBm)
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 the output level (1 kHz sine wave,
PAN=R).
PHONES L : less than -55.0 dBu PHONES R : -6.0 dBu
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 the output level (1 kHz sine wave,
PAN=L).
PHONES L : -6.0 dBu PHONES R : less than -55.0 dBu
Checks the switches on the panel.
Press the switches on the LCD as instructed. A pre-assigned note is output when the switch is
pressed.A rotary encoder is clockwise set up to UP and is counterclockwise set to DOWN. (See
P.32 "Table 1".)The check result appears on the LCD when all the switches are pressed as
instructed. Check that "SW OK" is displayed.
Also, check that no key stick is existed.
(OK:"SW OK", NG:"SW NG", When multiple switches are pressed at the same time:"Over Two")
Check that all the LEDs on the panel are on.
Check that all LCD dots are on.
Check that all LCD dots are off.
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 "PD1 OK".
(OK:"PD1 OK", NG:"PD1 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 from
center and the C4 note is output when rotating it to maximum.
(OK:"PB OK", NG:"PB NG", If the center position of the wheel is not correct:"PB C NG")
