Yamaha Portable Grand DGX-630 Service Manual page 39

I TEST PROGRAM
* If you execute the test No.49(Factory Set), then the user's preset data may be lost.
Therefore, back up the user's data in advance.
A. PREPARATION
1) PA-5D, PA-51 or PA-150 (AC adaptor) is used.
2) Measuring device: Frequency counter, which can detect thousandth value or more, Level meter (with JIS-C filter), Oscilloscope
Note: Use a stereo plug and connect a load resistor of 33Ω to the [PHONES/OUTPUT] jack for measurement unless otherwise
specified. Input impedance of the measuring device should be 1 MΩ or more.
3) Jigs: Pedal unit (LP-7), Foot switch (FC-4 or FC-5), USB cable, USB flash memory, USB-MIDI driver (*1)
PC (Install a USB-MIDI driver(*1) in PC and finish the THROUGH setup.)
*1 Obtain the USB-MIDI driver from CD-ROM(X9318A00) for DGX-630/YPG-635 or Yamaha official website.
(URL>>http://www.yamahapkclub.com)
B. HOW TO ENTER THE TEST PROGRAM
While pressing the C2#, F2 and G2# keys, turn the [STANDBY/ON] switch on.
DGX-630/YPG-635
C. TEST PROCEDURE
1) When the test program is started, "TEST" will be displayed on the LCD.
2) Press the [-] or [+] button of the number buttons to select a test program item.
3) Press the [START/STOP] button to execute the test.
* If the test result is OK, or the test item is completed, press the [START/STOP] button again to return to
the test item selection display.
* Press the [-] or [+] button of the number buttons to select the next test program item.
* When the test result is OK, an asterisk (*) is added in front of its item name on display.
If the test result is NG, press the [DEMO] button or the lowest (leftmost) white key to return to the item
selection display. Turn the power off to finish the test program.
D. TEST PROGRAM LIST
TEST
LCD Display
No.
-- --
1 001 Version
C2# G2#
F2
Test Descriptions, Judging Criteria
Contrast Check
Set the contrast knob to the legible position of LCD. When the contrast knob is turned clockwise
(or counterclockwise), the LCD becomes blue (or white).
Displays ROM(Program) and ROM(Wave) versions.
(In case of OK:"XXX" Prog / "XXX" Wave, NG:"Err" Prog / "Err" Wave)
STANDBY
ON
DGX-630/YPG-635
(dBu= dBm)
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