Yamaha PSR-S770, Service Manual

Page: 46 / 110

46
PSR-S770/PSR-S970
LCD■display
Test■items■and■judging■conditions
044■:■Pitch■Bend■Wheel■
Check Checks whether the PITCH BEND wheel control works properly or not.
1) Press the [START/STOP] button. “ Pitch■Bend■Up■128 ” is shown on the LCD.
2) Roll the [Pitch Bend] wheel upward to the maximum position to produce the G3 beep.
“
Pitch■Bend■Down■255
” is shown on the LCD.
3) Roll the [Pitch Bend] wheel downward to the minimum position to produce the C3 beep.
“ Pitch■Bend■Center■0 ” is shown on the LCD.
4) Release the [Pitch Bend] wheel to the center position to produce the C4 beep.
“
OK■■■128
” is shown on the LCD.
5) Press the [START/STOP] button to exit the TEST item.
045■:■Modulation■Wheel■
Check Checks whether the MODULATION Wheel control works properly or not.
1) Press the [START/STOP] button. “ Modulation■Up■xxx ” is shown on the LCD.
2) Roll the [MODULATION] wheel upward to the maximum position to produce the G3 beep.
“
Modulation■Down■255
” is shown on the LCD.
3) Roll the [MODULATION] wheel downward to the minimum position to produce the C4 beep.
“ OK ” is shown on the LCD.
4) Press the [START/STOP] button to exit the TEST item.
046■:■LiveControl■Check
Checks whether the Live Control [1]/[2] knobs work properly or not.
1) Press the [START/STOP] button. “
LiveControl■1■MIN■(xx)
” is shown on the LCD.
2) Rotate the [LIVE CONTROL 1] control to the minimum position.
The value: 0 to 255 is shown on the LCD depending on the [LIVE CONTROL 1] control position.
When the minimum value is detected, “
LiveControl■1■MAX■(0)
” is shown on the LCD.
3) Rotate the [LIVE CONTROL 1] control to the maximum position.
When the maximum value is detected, “ LiveControl■1■Center■(255) ” is shown on the LCD.
4) Rotate the [LIVE CONTROL 1] control to the center position.
When the center value is detected, “ LiveControl■2■MIN■(xx) ” is shown on the LCD.
5) Rotate the [LIVE CONTROL 2] control to the minimum position.
When the minimum value is detected, “ LiveControl■2■MAX■(0) ” is shown on the LCD.
6) Rotate the [LIVE CONTROL 2] control to the maximum position.
When the maximum value is detected, “ LiveControl■2■Center■(255) ” is shown on the LCD.
7) Rotate the [LIVE CONTROL 2] control to the center position.
When the center value is detected, “ OK ” is shown on the LCD.
8) Press the [START/STOP] button to exit the TEST item.
053■:■Pedal1■Check Checks whether the Foot Pedal plugged into FOOT PEDAL1 jack works properly or not.
1) Connect the foot pedal (FC7) to FOOT PEDAL 1 jack.
2) Press the [START/STOP] button to start the test.
“ Pedal1■Down ” is shown on the LCD.
When the pedal is not detected, “
No■Pedal
” is shown on the LCD.
3) Press the pedal to the maximum position to produce the C3 sound.
“
Pedal1■Up
” is shown on the LCD.
4) Press the pedal to the minimum position to produce the G3 sound.
“
Pedal1■Out
” is shown on the LCD.
5) Disconnect the pedal from the FOOT PEDAL 1 jack to produce the C4 sound.
“
OK
” is shown on the LCD.
6) Press the [START/STOP] button to exit the TEST item.