2. press C2# - F2 - G2# (all three together) and while keeping them depressed,
3. switch the power on.
You'll see the word "TEST" on the display
With Tempo - / + you can go to the test you want to perform. Start/Stop will start the test, follow the on screen instructions for each test.
You can check following items : (this list is based on the PSR-S900 system tests)
- 001 : Version
002 : Rom Check 1
003 : Ram Check 1
004 : flash Check 1
005 : Wave rom Check 1
006 : Effect ram Check
007 : TG 1 Check
014 : Pitch Check
015 : Output R Check
016 : Output L Check
019 : EQ low Check
020 : EQ mid Check
021 : EQ high Check
023 : Mute Check
025 : MIC Test
027 : Sw, Led Check
028 : All panel led on Check
029 : Red led On Check
030 : green led On Check
033 : All LCD on Check
034 : All LCD off Check
036 : LCD Brightness Check
037 : LCD Pattern Check
040 : Pitbend wheel Check
041 : Moduration wheel Check
046 : Padal 1 Check
047 : Padal 2 Check
053 : Midi Check
055 : Video out NTSC RGB
056 : Video out PAL RGB
057 : USB To Device / Host Check
058 : USB Storage Device Check
059 : Card Check
061 : Keyboard Type Check
067 : Rom Check 2
068 : Ram Check 2
069 : flash Check 2
070 : Wave rom Check 2
071 : Effect ram Check 2
088 : Factory set
089 : Test End
When at 089, press Start/Stop to exit the test mode and your keyboard will continue to start up normally.