Yamaha PSR-S550B, Service Manual

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PSR-S550/PSR-S550B
29 029 Pedal4 Chk Connect the foot switch (FC-4 or FC-5) to the [SUSTAIN] jack.
Check that the C3 note is output when the [START/STOP] button is pressed while
stepping the pedal and the C4 note is output when releasing the pedal.
The sound stops when stepping the pedal again. Check that the LCD displays "Pedal4 OK".
(OK:"Pedal4 OK", NG:"Pedal4 NG")
30 030 Pitch Bend Chk Checks the pitch bend wheel.
(First, it checks if the center position of the wheel is correct or not.)
Check that the C3 note is output when rotating the [PITCH BEND] wheel to minimum
and the C4 note is output when rotating it to maximum.
(OK:"Pitch Bend OK", NG:"Pitch Bend NG", If the center position of the wheel is not
correct:"Center NG")
32 032 MIDI Chk Checks MIDI and USB.
Connect the PC with a USB-MIDI driver installed and the [USB 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.) Check that the C4 note is output and the LCD displays "MIDI OK".
(OK:"MIDI OK", NG:"MIDI NG")
33 033 USB Connect Chk 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")
34 034 USB Storage Chk Checks the USB storage.
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")
44 044 Rom Chk2 Checks the ROM that is connected to the CPU bus.
The test result appears on the LCD. Check that the LCD displays "Rom OK".
It takes about 3 seconds.
(OK:"Rom OK", NG:"Rom NG")
45 045 Ram Chk2 Check the RAM that is connected to the CPU bus.
The test results appear on the LCD. Check that the LCD displays "Ram OK".
(OK:"Ram OK", NG:"Ram NG")
46 046 Flash RomChk2 Checks the flash ROM that is connected to CPU bus.
The check result appears on the LCD. Check that the LCD displays "Flash Ram OK".
It takes about 50 seconds.
(OK:"Flash Rom OK", NG:"Flash Rom NG")
47 047 Wave RomChk2 Checks the wave ROM that is connected to CPU bus.
The check result appears on the LCD. Check that the LCD displays "Wave Ram OK".
It takes about 2 minutes.
(OK:"Flash Rom OK", NG:"Flash Rom NG")
TEST
LCD Display Test Descriptions, Judgment Criteria
No.