Test Program - Yamaha PSR-S550 Service Manual

■ TEST PROGRAM

* If you execute the test No.49 (Factory Set), then the user's preset data may be lost.
Therefore, back up the user's data in advance.
A. PREPARATION
1) PA-301 or PA-300B (AC adaptor) is used.
2) Measuring instruments: frequency counter, level meter (with JIS-C filter)
Note: Connect a stereo plug to the [PHONES/OUTPUT] jack at 33 Ω.
3) Jigs: Foot switch (FC-4 or FC-5), USB cable, USB flash memory, USB-MIDI driver (*1)
PC (Install a USB-MIDI driver (*1) in PC and finish the THROUGH setup.)
*1 Obtain the USB-MIDI driver from CD-ROM(X9448A00) for PSR-S550/PSR-S550B or Yamaha official website.
(URL>>http://www.yamahapkclub.com)
B. HOW TO ENTER THE TEST PROGRAM
While pressing the C2#, F2 and G2# keys, turn the [STANDBY/ON] switch on.
C2# G2#
F2
C. TEST PROCEDURE
1) When the test program is started, "TEST" will be displayed on the LCD.
2) Press the [+/YES] or [-/NO] button to select a test program item.
3) Press the [START/STOP] button to execute the test.
* If the test result is OK, or the test item is completed, press the [START/STOP] button again to return to the test item selection
display.
Proceed to the next test by pressing the [-] or [+] button.
* Press the [-] or [+] button of the number buttons to select the next test program item.
* When the test result is OK, an asterisk (∗) is added in front of its item name on display.
If the test result is NG, press the [DEMO] button or the lowest (leftmost) white key to return to the item selection display.
D. Test Item List
TEST
LCD Display
No.
-- --
1 001 Version
2 002 Rom Chk1
STANDBY
ON
Test Descriptions, Judgment Criteria
Contrast Check
Set the contrast knob to the legible position of LCD. When the contrast knob is turned
clockwise (or counterclockwise), the LCD becomes blue (or white).
Displays ROM versions (Prog, Wave).
(In case of OK:"XXX" Prog / Wave, NG:"Err" Prog / Wave)
Checks the ROM that is connected to the CPU bus.
The test results appear on the LCD.
Check that the LCD displays "Rom OK".
(OK:"Rom OK", NG:"Rom NG")
PSR-S550/PSR-S550B
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