Yamaha PSR-S650, Service Manual, Page: 34 / 70

PSR-S650
34
TEST No LCD display Test descriptions, judging conditions, etc.
8 008 TG1 Chk
Plays each key automatically in the order of scale (auto-scaling). (32 notes from C2 to G4 will be played.)
Make sure that there is no abnormal sounds or noise. When the auto-scaling is
fi nished, “ TG1 End ”
will be shown. Press a key to play a sound. (Single note, the key pressed fi rst will be played)
9 009 Pit Chk
Checks pitch accuracy.
Connect the frequency counter to the [PHONES/OUTPUT] jack. (Either L or R)
Make sure that the correct signal is output. (441.0 Hz ± 0.2 Hz)
Amount of volume decay
Connect the level meter (with JIS-C
fi lter) to the L/R of the [PHONES/OUTPUT] jack. (33 Ω load)
Turn the [MASTER VOLUME] to the minimum and measre the amount of volume decay.
· PHONES L, R: -70 dBu or less
10 010 Output R
Connect the level meter (with JIS-C fi lter) to the L/R of the [PHONES/OUTPUT] jack.
(33 Ω load)
Set the [MASTER VOLUME] to the maximum level and check the output level.
· PHONES R: -5.5 dBu ± 2 dB
· PHONES L: -45.0 dBu or less
11 011 Output L Connect the level meter (with JIS-C fi lter) to the L/R of the [PHONES/OUTPUT] jack.
(33 Ω load)
Set the [MASTER VOLUME] to the maximum level and check the output level.
· PHONES L: -5.5 dBu ± 2 dB
· PHONES R: -45.0 dBu or less
21 021 SW Chk
Checks the switches and LEDs on the panel. Press the switches as shown in the LCD. When a switch
is pressed, a sound is played at the prescribed pitch. (Refer to the Switch Test Item List on the page
36.) When a switch with LED is turned on, the LED will light up.
Turn the encoder knob clockwise when “
DIAL UP ” is shown on the LCD in the “Dial” item. The
indication on the display will then change to “ DIAL DOWN ”. Then, turn the encoder knob counter-
clockwise.
Make sure that “
SW OK
” is displayed on the LCD when all the switches are pressed as indicated.
To cancel the running test, press the [DEMO] button or the lowest key (white key C1) to return to the
item selection display.
22 022 ALL LED Chk
Make sure that all the LEDs on the panel are turned on.
23 023 Red LED Chk
Make sure that all the red LEDs on the panel are turned on.
24 024 Green LED Chk
Make sure that all the green LEDs on the panel are turned on.
25 025 LCD On Make sure that all the dots on the LCD are turned on.
26 026 LCD Off
Make sure that all the dots on the LCD are turned off.
32 032 Pedal4 Chk Connect a footswitch (FC-4 or FC-5) to the [SUSTAIN] jack.
Check that C3 sound is played when the [Start/Stop] button is pressed with the pedal depressed and
that C4 sound is played when the pedal is released. Depress the pedal again and the sound will be
stopped.
Make sure that “
Pedal4 OK ” is displayed on the LCD.
33 033 Pitch Bend Chk
C3 is played when the [PITCH BEND] wheel is turned toward you to the minimum position (Pitch
Bend DOWN), and C4 is played when the wheel is turned away from you to the maximum position
(Pitch Bend UP).
Make sure that “
Pitch Bend OK ” is displayed on the LCD.
35 035 MIDI Chk
Connect a PC which has installed the USB-MIDI driver and main unit [USB TO HOST] terminal
with a USB cable. Set the through mode on PC and execute the test.
Con
fi rm that the C4 note is output and “ MIDI OK ” is displayed on the LCD.
36 036 USB Connect Chk
Enter the test with the [START/STOP] button and “
USB Connect1 --
” will be displayed on the
LCD. When a USB cable is connected to the [USB TO DEVICE] and [USB TO HOST] terminals,
“
USB Connect2 -- ” is displayed on the LCD.
Disconnect the USB cable from the [USB TO DEVICE] and [USB TO HOST] terminals and then
connect a USB storage device to [USB TO DEVICE] terminal.
Con
fi rm that the C4 note is output and “
USB Connect OK
” is displayed on the LCD.
37 037 USB Storage Chk
Connect a USB storage device to the [USB TO DEVICE] terminal and press the [START/STOP]
button to execute the test.
Make sure that “
USB Storage OK
” is displayed on the LCD.