59
PSR-S750/PSR-S950
Test No.
LCD display
Test descriptions, judging conditions, etc.
17
017 : SIOF Check
Checking SIOF.
Have the sound produced from 2 SIOF signal lines (Line-A, Line-B) using the [TAB
2
3
]
button to check for correct connection.
Line-A
[TAB
2
]: A3 (441 Hz) sound is produced from L channel. “
Line-A
” is displayed on
the LCD.
Line-B
[TAB
3
]: C5 (1049 Hz) sound is produced from R channel “
Line-B
” is displayed on
the LCD.
When the test is started, the sound is produced from Line-A.
18
018 : AUX-IN Check
Checking AUX IN.
Start checking with the plug disconnected.
1. “
Not Inserted
” is displayed on the LCD when the test is executed.
2. Insert the stereo mini plug into the [AUX IN] terminal. “
Inserted
” is displayed on the LCD.
3. Check that the sound inputted to the [AUX IN] terminal is output at the [OUTPUT] and
[PHONES] terminals.
NOTE:
Connect and then disconnect the jack before inserting the jack for
measurement or no signal will be output from the [OUTPUT] terminal.
19
019 : SW, LED Check
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 62). 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 selection 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 make sure
that
“SW, LCD Check END”
is displayed on the LCD.
20
020 : All LED On
Checking whole LEDs’ lighting up.
Check that all the LEDs will light.
21
021 : Red LED On
Checking whole red LEDs’ lighting up.
Check that all the red LEDs will light.
22
022 : Green LED On
Checking whole green LEDs’ lighting up.
Check that all the green LEDs will light.
23
023 : All LCD On
Checking whole LCD’s lighting up. Check that all the dots in the LCD are turned black.
24
024 : All LCD Off
Checking whole LCD’s turning off. Check that all the dots in the LCD are turned white.
25
025 : LCD Backlight Off Check
Checking LCD backlight for ON/OFF function.
Switch the backlight ON and OFF with the [TAB
2
3
] button.
26
026 : Main Volume Check
Checking the main volume.
When the [MASTER VOLUME] knob is turned counterclockwise and MIN (minimum value)
is detected, “
Main Volume MIN 0
” is displayed.
When the [MASTER VOLUME] knob is turned clockwise and MAX (maximum value) is
detected, “
OK 255
” is displayed.
Check that the minimum value (0) and maximum value (255) of the main volume can be detected.
27
027 : Emergency Circuit
Check
Checking the abnormal detection circuit for proper operation.
Sound is produced with about 441Hz (A3) sine wave at a specifi ed level, PAN=center.
Using the [TAB
2
3
] button, switch between the function valid (sound muted) and invalid
(sound produced) for this check.
Emergency Circuit Check ON
[TAB
3
]: With the function set to valid, the SP output sound
is muted.
Emergency Circuit Check OFF
[TAB
2
]: With the function set to invalid, the SP output
sound is produced.
(The plug should be unconnected from the PHONES terminal.)
Summary of Contents for PSR-S750
Page 41: ...41 PSR S750 PSR S950 Pattern side 2NA WZ35370 1 DM Circuit Board PSR S750 ...
Page 43: ...43 PSR S750 PSR S950 Pattern side Scale 90 100 DM Circuit Board PSR S950 2NA WZ49340 1 ...
Page 45: ...45 PSR S750 PSR S950 Scale 90 100 Pattern side AJACK Circuit Board 2NA WZ43510 2 ...
Page 47: ...47 PSR S750 PSR S950 PNM Circuit Board Pattern side Scale 70 100 2NA WZ50830 1 ...
Page 48: ...PSR S750 PSR S950 48 PNS Circuit Board Component side WR 315 1 WR 31 1 WR 310 1 2NA WZ50830 1 ...
Page 49: ...49 PSR S750 PSR S950 Pattern side PNS Circuit Board 2NA WZ50830 1 ...
