Yamaha Portable Grand DGX-630 Service Manual page 41

TEST
LCD Display
No.
26 026 Pedal1 Chk
27 027 Pedal2 Chk
28 028 Pedal3 Chk
29 029 Pedal4 Chk
30 030 Pitch Bend Chk
32 032 MIDI Chk
33 033 USB Connect Chk
34 034 USB Storage Chk
Test Descriptions, Judging Criteria
Checks the soft pedal (left pedal).
Connect the pedal unit (LP-7 etc.) to the [PEDAL UNIT] terminal.
Execute this test. The C3 note is output and "Pedal1 ON" is displayed on the LCD.
Press the pedal. The C4 note is output and "Pedal1 OFF" is displayed.
Release the pedal. The C4 sound stops. Make sure that "Pedal1 OK" is displayed.
(OK:"Pedal1 OK", NG:"Pedal1 NG")
Checks the sostenuto pedal (center pedal).
Connect the pedal unit (LP-7 etc.) to the [PEDAL UNIT] terminal.
Execute this test. The C3 note is output and "Pedal2 ON" is displayed on the LCD.
Press the pedal. The C4 note is output and "Pedal2 OFF" is displayed.
Release the pedal. The C4 note stops. Make sure that "Pedal2 OK" is displayed.
(OK:"Pedal2 OK", NG:"Pedal2 NG")
Checks the damper pedal (right pedal).
Connect the pedal unit (LP-7 etc.) to the [PEDAL UNIT] terminal.
Execute this test. The C3 note is output and "Pedal3 Half" is displayed on the LCD.
Press the pedal until the half position. The G4 note is output and "Pedal3 ON" is displayed.
Press the pedal fully. The sine wave of C4 sounds and "Pedal3 OFF" is displayed.
Release the pedal. The C4 note stops. Make sure that "Pedal3 OK" is displayed.
(OK:"Pedal3 OK", NG:"Pedal3 NG")
Checks the pedal4.
Connect the foot pedal (FC-4 or FC-5) to the [SUSTAIN] terminal.
Execute this test. The C3 note is output.
Press the pedal. The C4 note is output.
Release the pedal. The C4 note stops.
Make sure that "Pedal4 OK" is displayed.
(OK:"Pedal4 OK", NG:"Pedal4 NG")
Checks the pitch bend wheel.
First, it checks if the center position of the wheel is correct or not.
The C3 note is output when rotating the [PITCH BEND] wheel to minimum and The C4 note
is output when rotating it to maximum. Make sure that "Pitch Bend OK" is displayed on the LCD.
(OK:"Pitch Bend OK", NG:"Pitch Bend NG",
If the center position of the wheel is not correct:"Center NG")
Checks MIDI and USB.
Connect the PC with a USB-MIDI driver installed and the [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.)
Make sure that the C4 note is output and "MIDI OK" is displayed on the LCD.
(OK:"MIDI OK", NG:"MIDI NG")
Checks the USB connection.
1. Execute this test. "USB Connect1--" is displayed on the LCD.
Connect the [TO DEVICE] and [TO HOST] terminals using a USB cable.
Make sure that the LCD display changes to "USB Connect2--".
2. Remove the USB cable from the [TO DEVICE] terminal, and insert a USB flash memory into
the [TO DEVICE] terminal.
Make sure the C4 note is output and "USB Connect OK" is displayed on the LCD.
(OK:"USB Connect OK", NG:"USB Connect NG")
Checks USB.
Connect a USB flash memory to the [TO DEVICE] terminal, and execute the test.
Make sure that "USB Storage OK" is displayed on the LCD.
(OK:"USB Storage OK", NG:"USB Storage NG")
DGX-630/YPG-635
41