Ik heb hier een U20 staan die niet al zijn geluiden meer heeft. Bij een groot aantal sound geeft ie geen geluid, bij andere doet ie het perfect. Zou dit aan de eprom chip kunnen liggen en zo ja, weet iemand hoe ik aan een nieuwe kom voor weinig? Alvast dank voor je hulp!!!
Roland U20 met kuren: eprom defect?
- Thread starter JAW
- Start date
Hoe doe je die eprom test? Mijn U20 laat ook bepaalde geluiden niet horen. Als ik de U20 laadt via sysex met U220 geluiden doen ze het soms weer wel. Dus ik weet niet of het nou aan de U20 ligt of aan foutief geladen sysex.
Dus ik ben benieuwd hoe je de eprom test doet.
Dus ik ben benieuwd hoe je de eprom test doet.
Ik heb het hier gevonden: http://www.geocities.com/SiliconValley/Lakes/9276/u20romkey.txt
Quote van het test gedeelte:
Test Mode
-------------
[Warning: going into Test Mode does a 'soft reset' to U20. Some of the
MIDI and global parameters are set to default values after visiting the mode.
Nothing drastic, though.]
You can check your ROM version by setting ROM PLAY mode (press
PART and RHYTHM together) and then press JUMP and MARK and
ENTER while they are down. Now you get the test mode display that states
the ROM version and date.
To get out of test mode, press JUMP and MARK and EXIT while they're
down, or turn off the U20.
What to do in Test Mode
------------------------------
JUMP + BANK1: LCD contrast test, using pitch bender
JUMP + BANK2: Blinks all LEDs in sequences, speed adjusted with
bender
JUMP + BANK3: Starts internal RAM test that probably screws your
U20 up badly
JUMP + BANK4: RAM card test
JUMP + BANK5: PCM card test
JUMP + BANK6: Internal PCM ROM test. Outputs letters A-E if OK.
JUMP + BANK7: Allows key tests, buttons, pedal input, PCM card
insertion
JUMP + BANK8: A/D converter test and is very useful if you're trying
out the aftertouch modification (see below). Here
you can really see how hard it is to get 127 out from
aftertouch without the modification. This tests also the
bender and modulation sensor
JUMP + NUMBER1: Same as above, but tests C1 and C2 levers and external
input
JUMP + NUMBER2: MIDI I/O test. Connect MIDI IN to MIDI OUT with a
cable and data flow is presented visually
JUMP + NUM3-6: Produce various waveforms to hook up to an
oscilloscope on left output
JUMP + NUMBER7: Initialise memory. This is a goodbye to all your data
and needs the next step to get your U20 back on its feet
again. It might or might not read sysex after this- try
it at your own risk
JUMP + NUMBER8: Expects you to insert the factory preset memory card
and loads factory presets from the card into the
internal memory.
Kun je me vertellen waar ik de U220 geluiden kan vinden? Dan probeer ik dat ook een keer.
Quote van het test gedeelte:
Test Mode
-------------
[Warning: going into Test Mode does a 'soft reset' to U20. Some of the
MIDI and global parameters are set to default values after visiting the mode.
Nothing drastic, though.]
You can check your ROM version by setting ROM PLAY mode (press
PART and RHYTHM together) and then press JUMP and MARK and
ENTER while they are down. Now you get the test mode display that states
the ROM version and date.
To get out of test mode, press JUMP and MARK and EXIT while they're
down, or turn off the U20.
What to do in Test Mode
------------------------------
JUMP + BANK1: LCD contrast test, using pitch bender
JUMP + BANK2: Blinks all LEDs in sequences, speed adjusted with
bender
JUMP + BANK3: Starts internal RAM test that probably screws your
U20 up badly
JUMP + BANK4: RAM card test
JUMP + BANK5: PCM card test
JUMP + BANK6: Internal PCM ROM test. Outputs letters A-E if OK.
JUMP + BANK7: Allows key tests, buttons, pedal input, PCM card
insertion
JUMP + BANK8: A/D converter test and is very useful if you're trying
out the aftertouch modification (see below). Here
you can really see how hard it is to get 127 out from
aftertouch without the modification. This tests also the
bender and modulation sensor
JUMP + NUMBER1: Same as above, but tests C1 and C2 levers and external
input
JUMP + NUMBER2: MIDI I/O test. Connect MIDI IN to MIDI OUT with a
cable and data flow is presented visually
JUMP + NUM3-6: Produce various waveforms to hook up to an
oscilloscope on left output
JUMP + NUMBER7: Initialise memory. This is a goodbye to all your data
and needs the next step to get your U20 back on its feet
again. It might or might not read sysex after this- try
it at your own risk
JUMP + NUMBER8: Expects you to insert the factory preset memory card
and loads factory presets from the card into the
internal memory.
Kun je me vertellen waar ik de U220 geluiden kan vinden? Dan probeer ik dat ook een keer.
Welke klanken zitten daar op?
Op http://www.geocities.com/SiliconValley/Lakes/9276/pcmcards.htm kun je de lijst met kaarten en wat erop staat vinden.
ik open net een nieuw draadje voor de U20 omdat ik via de zoek functie niets kon vinden maar via google wel 
maar misschien kunnen jullie helpen https://www.synthforum.nl/forums/showthread.php?t=130179
maar misschien kunnen jullie helpen https://www.synthforum.nl/forums/showthread.php?t=130179
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