40
DGX-630/YPG-635
TEST
LCD Display
Test Descriptions, Judging Criteria
No.
2
002 Rom Chk1
Checks the ROM that is connected to the CPU bus. (OK:”Rom OK”, NG:”Rom NG”)
The test result appears on the LCD. Make sure that “Rom OK” is displayed on the LCD.
3
003 Ram Chk1
Checks the RAM that is connected to the CPU bus.
(OK:”Ram OK”, NG:”Ram NG”)
The test result appears on the LCD. Make sure that “Ram OK” is displayed on the LCD.
4
004 Flash Rom Chk1
Checks the flash ROM that is connected to CPU bus.
The test result appears on the LCD. Make sure that “Flash Ram OK” is displayed on the LCD.
(OK:”Flash Rom OK”, NG:”Flash Rom NG”)
5
005 Wave Rom Chk1
Checks the wave ROM that is connected to the CPU bus.
The test result appears on the LCD. Make sure that “Wave Rom OK” is displayed on the LCD.
(OK:”Wave Rom OK”, NG:”Wave Rom NG”)
7
007 TG1 Chk
Outputs the sine wave by changing the channels in sequence from C2 to G4 (32 notes) twice.
Check 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.)
8
008 Pit Chk
Connect the frequency counter to the [PHONES/OUTPUT] terminal. (L or R)
Sets PAN to Center and produces a signal at 441.0 Hz +/- 0.2 Hz.
Check that the correct signal is produced.
9
009 Output R
Connect the level meter (with a JIS-C filter) to the [PHONES/OUTPUT] terminal. (33
Ω
load)
Set the [MASTER VOLUME] at maximum and check the output level (1 kHz sine wave, PAN=R).
PHONES L : less than -45.0 dBu PHONES R : -1.0 dBu +/- 2 dB
10
010 Output L
Connect the level meter (with a JIS-C filter) to the [PHONES/OUTPUT] terminal. (33
Ω
load)
Set the [MASTER VOLUME] at maximum and check the output level (1 kHz sine wave, PAN=L).
PHONES L : -1.0 dBu +/- 2 dB PHONES R : less than -45.0 dBu
18
018 SW Chk
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.
The check result appears on the LCD when all the switches are pressed as instructed.
Make sure that “SW OK” is displayed. Also, check that no key stick is existed.
(To stop the switch test on the way, or to finish the switch test, and return to the test selection
display, press the lowest (leftmost) white key.)
(OK:”SW OK”, NG:”SW NG”, When multiple switches are pressed at the same time:”Over Two”)
19
019 All LED Chk
Check that all the LEDs on the panel are on.
20
020 Red LED Chk
Check that all the red LEDs on the panel are on.
21
021 Green LED Chk
Check that all the green LEDs on the panel are on.
22
022 LCD On
Check that all LCD dots are on. (The whole screen becomes white.)
23
023 LCD Off
Check that all LCD dots are off. (The whole screen becomes blue.)
