Yamaha PSR-S710, Руководство по обслуживанию

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PSR-S710/PSR-S910
Test No. LCD display Test descriptions, judging conditions, etc.
19 019 : SIOF Check
Checking the MEL connection between the SWP51L and CPU.
Check that sine wave (A3) is played.
20 020 : MP3 Check
(PSR-S910 only)
Conducting connection check for playback of MP3.
Check that sine wave (A3) is played.
23 023 : MIC Check
(PSR-S910 only)
MIC Check:
Connect a microphone to the [MIC] jack and speak into the microphone. Check that there is no abnormal
sounds or noise.
MIC Level:
Connect a level meter (with a JIS-C fi lter) to the L/R of the [PHONES] connectors. (33 Ω load) Set the
[MASTER VOLUME] to the maximum level.
Measure at each output jack when 1 kHz sine wave of –40 dBu is input to the [MIC] jack.
Set the [MIC/LINE] select switch to [MIC] and set the [INPUT VOLUME] at the maximum level.
PHONES L, R: -6.0 ± 2 dBu
24 024 : SW, LED Check
OK:
024 : SW, LED Check
END
Checking switches and switch LEDs.
Activate switches shown on the LCD one by one and a sound is played at the prescribed pitch respectively
(refer to page 67, 68). When a switch with LED is turned on, the LED will light up, too.
(A two-colored LED will light in red.)
Sound continues to play as long as the switch is pressed. The LED continues to light until the next switch
is pressed.
To quit the test halfway, use the [DEMO] button or the lowest key on the keyboard to return to the selec-
tion screen.
After all the switches are pressed,
“Dial Down”
will be shown on the LCD for [Data entry] dial check.
Turn the [Data entry] dial counterclockwise and the number on the LCD will change from 50 to 0 and “Dial
Up” will be shown on the LCD. Next, turn the dial clockwise and the number will change from 0 to 100.
Make sure that “SW, LCD Check END” is displayed on the LCD.
25 025 : All LED On Check
Checking whole LEDs’ lighting up.
Check that all the LEDs will light.
All the LEDs on the PNL side will light with the [TAB
2
] button.
All the LEDs on the PNR side will light with the [TAB
3
] button.
Two-colored LEDs will light in orange.
26 026 : Red LED On Check
Checking whole red LEDs’ lighting up.
Check that all the red LEDs will light.
All the red LEDs on the PNL side will light with the [TAB
2
] button.
All the red LEDs on the PNR side will light with the [TAB
3
] button.
27 027 : Green LED On Check
Checking whole green LEDs’ lighting up.
Check that all the green LEDs will light.
All the green LEDs on the PNL side will light with the [TAB
2
] button.
All the green LEDs on the PNR side will light with the [TAB
3
] button.
30 030 : All LCD On Check
Checking whole LCD’s lighting up. Check that all the dots in the LCD are turned black.
31 031 : All LCD Off Check Checking whole LCD’s turning off. Check that all the dots in the LCD are turned white.
33 033 : LCD Pattern Check
(PSR-S910 only)
Checking LCD pattern.
Use the [TAB
3
] button to select in the order of RGB pattern, rainbow pattern, and fl icker noise pattern.
Use the [TAB
2
] button to switch in reverse order. The color patterns are for checking LCD picture qual-
ity. Check that there is no abnormality in the display.
36 036 : Pitch Bend Wheel Check
If the center of the [PITCH BEND]
wheel is not detected:
036 : Pitch Bend Wheel Check
Pitch Bend Center NG
OK:
036 : Pitch Bend Wheel Check
OK
NG:
036 : Pitch Bend Wheel Check
NG
Checking PITCH BEND.
Detects the center of the [PITCH BEND] wheel.
Turn the [PITCH BEND] wheel from the center to minimum and C3 will be played. Turn to maximum and
G3 will be played. Then, turn the wheel back to the center and check that C4 is played.
Check that
“Pitch Bend Wheel Check OK”
is displayed on the LCD when the test is completed.