Pioneer PORTATONE PSR-280 Service Manual page 25

TEST NO. LCD (initial)
28 028: All LCD On
29 029: All LCD Off
30 030: I/F Chk
31 031: Pedal1 Chk
37 037: Midi Chk
41 041: Rom Chk2
42 042: Ram Chk2
43 043: WaveRom Chk2
46 046: BackUp Chk2
47 047: Factory Set
48 048: Test Exit
* NOTE: The above tests No. 41-46, require approximately 25 minutes to conduct.
If the time is not available to perform the tests, proceed the test No.47 by pressing several the [NEXT] button.
Test Functions and Judgment Criteria
Check that all LCD dots are on. The LCD becomes black.
Check that all LCD dots are off. The LCD becomes white.
Connect the foot switch (FC-4 or FC-5) to the [SUSTAIN] jack.
Check that the C3 note is output when pressing and releasing the pedal and the C4 note is
output when pressing the pedal again.
After connecting the [MIDI IN] jack and [MIDI OUT] jack with a MIDI cable, execute the test.
Set the [HOST SELECT] switch to MIDI
Check that the C4 note is output and that the test results appear on the LCD.
Checks the ROMs that are connected to the CPU.
The test results appear on the LCD.
Checks the RAMs that are connected to the CPU.
The test results appear on the LCD.
Checks the WAVE ROM.
The test results appear on the LCD.
Performs the RAM back-up check.
Check that the display reads "NG," then turn off the power switch.
Enter the test program and perform the RAM back-up checks, then check again.
Check that the LCD displays "OK."
Note: Do not turn on the power switch by normal mode while standing by, as the RAM
data will be lost.
All the RAMs are initialized and set to the factory preset data when executing this test.
The results appear on the LCD.
Exit from the test program after executing this test.
PSR-280/PSR-282
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