Viewing 14 posts - 1 through 14 (of 14 total)
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  • #27822
    squier79
    Member

    hi, i have a little problem with my “new” uf7 master keyboard. I bought it used and the pitch wheel doesn’t work, it looks like it is always set to maximum, and moving up or down the wheel (movement works 100%) doesn’t affect the sound. The problem is that all the notes i play are one tone over, for example if i press the C key, the keyboard plays the D. How can i solve this problem? the pitch wheel is a potentiometer with the movement adjusted by a spring? if yes i can change the potentiometer with an equal one. Can anyone help me for this? i’d like a guide to disassemble the keyboard if i have to change the potentiometer, or i need some tip to resolve this… i love this keyboard but for now i can’t use it.

    Thanks all

    #27841
    Amanda
    Member

    Hi,the problem should caued by the pitch potentiometer get stuck inside. You can try to move the pitchbend wheel Heavily several times to see if helpful.
    If above doesn’t work. You can contact me by email.In that I can send you UF service manual. My mail:wma@centrmus.com.
    Thanks.

    #27842
    squier79
    Member

    Hi, I’m sorry but I’m trying to do what you told but the pitch is really blocked in the up position, and the keyboard sounds like it has a “tremolo” activated. With the service manual I can try to repair the keyboard with the help of a technical service. If you can please send me it to ginogrande79@gmail.com

    #27843
    Amanda
    Member

    Ok, I will send UF service manual to your mailbox. Thanks.

    #27994
    milikito
    Member

    Hi,

    I’m also having the same issue with my UF8. The modulation wheel is working fine, but the pitch bender is constantly sending data (values in the range of 2400-2600) regardless of the position of the wheel, which mechanically behaves as expected. I’m using a MIDI filter to remove the incorrect bender data so at least I can use the keyboard without it interfering. Here is a sample of the MIDI output (I pressed a key at the end):

    TIMESTAMP IN PORT STATUS DATA1 DATA2 CHAN NOTE EVENT
    02DFACBB 9 — E0 2C 54 1 — Pitch Bend
    02DFACFA 9 — E0 58 53 1 — Pitch Bend
    02DFAD57 9 — E0 2C 54 1 — Pitch Bend
    02DFAD95 9 — E0 00 55 1 — Pitch Bend
    02DFADB5 9 — E0 2C 54 1 — Pitch Bend
    02DFADF3 9 — E0 58 53 1 — Pitch Bend
    02DFAE4F 9 — E0 2C 54 1 — Pitch Bend
    02DFAECC 9 — E0 58 53 1 — Pitch Bend
    02DFAF2A 9 — E0 2C 54 1 — Pitch Bend
    02DFAFA5 9 — E0 58 53 1 — Pitch Bend
    02DFB002 9 — E0 2C 54 1 — Pitch Bend
    02DFB07E 9 — E0 58 53 1 — Pitch Bend
    02DFB0DC 9 — E0 2C 54 1 — Pitch Bend
    02DFB11A 9 — E0 00 55 1 — Pitch Bend
    02DFB13A 9 — E0 2C 54 1 — Pitch Bend
    02DFB178 9 — E0 58 53 1 — Pitch Bend
    02DFB1D5 9 — E0 2C 54 1 — Pitch Bend
    02DFB214 9 — E0 00 55 1 — Pitch Bend
    02DFB233 9 — E0 2C 54 1 — Pitch Bend
    02DFB272 9 — E0 58 53 1 — Pitch Bend
    02DFB2CF 9 — E0 2C 54 1 — Pitch Bend
    02DFB34B 9 — E0 58 53 1 — Pitch Bend
    02DFB3A8 9 — E0 2C 54 1 — Pitch Bend
    02DFB3E7 9 — E0 00 55 1 — Pitch Bend
    02DFB406 9 — E0 2C 54 1 — Pitch Bend
    02DFB445 9 — E0 58 53 1 — Pitch Bend
    02DFB4A2 9 — E0 2C 54 1 — Pitch Bend
    02DFB51E 9 — E0 58 53 1 — Pitch Bend
    02DFBB02 9 — 90 37 38 1 G 3 Note On
    02DFBB92 9 — 80 37 0E 1 G 3 Note Off

    Can you please also share the schematics with me? Any help on how to resolve this would be greatly appreciated. Thanks!

    #27995
    Zhao Yitian
    Keymaster

    Please send email to techsupport@xkeyair.com, our service people will help.

    #28539
    ben
    Member

    Here is a sample of the MIDI output (I pressed a key at the end):

    TIMESTAMP IN PORT STATUS DATA1 DATA2 CHAN NOTE EVENT
    02DFACBB 9 — E0 2C 54 1 — Pitch Bend
    02DFACFA 9 — E0 58 53 1 — Pitch Bend
    02DFAD57 9 — E0 2C 54 1 — Pitch Bend
    02DFAD95 9 — E0 00 55 1 — Pitch Bend
    02DFADB5 9 — E0 2C 54 1 — Pitch Bend

    did your problem get fixed somehow?

    my cme uf5 does the same. but even with the pitch-pot disconnected from the pcb i get E0 XX XX outputs. even when i move fader #8 there are several blocks of E0…data inside.

    i had a similar problem with another controller caused by a damaged fader. these systems don’t seem to like open inputs on their boards.

    is it possible to get a copy of a service-manual for the cme uf5/6/8?
    is a firmware-file available for download?
    i like my uf5, it’s been reliable and flexible, it’s still being run via midi (who needs usb?)

    best regards

    #28579
    Amanda
    Member

    Hi, Milikito

    Sorry for the troubles. Regarding your problem, you can try below tow ways:
    1. Move the pitch bend wheel heavier several times to see if helpful.
    2. Disconnect UF, screw down the nut of pitchbend potentiometer.
    If you have any future problem, please send me emal:wma@centrmus.com.

    #28580
    Amanda
    Member

    Hi, Ben

    It seems your probme is in the electrical circuit. You can download UF service manual from below link:https://mega.nz/#!9vg2CIaL
    And if your UF is the first version(Black and Red), it can’t do the firmware upgrade. Sorry about this.

    #28877
    ben
    Member

    Hello Amanda, it’s been a long, long time since i was checked for a reply, so unfortunately your link doesn’t work anymore. it says i need a key to download. could you please re-upload or send me a valid key for the service-manual?
    best regards

    ben

    #30896
    julien
    Member

    Hi,

    I’m running into the same issue with a cme uf-8 keyboard (first edition, black and red). I get random « pitch bend » events in midi while playing, for example

    20:1 Note on 0, note 70, velocity 56
    20:1 Note off 0, note 70, velocity 49
    20:1 Pitch bend 0, value 1512
    20:1 Pitch bend 0, value 1848
    20:1 Note on 0, note 67, velocity 64
    20:1 Note on 0, note 70, velocity 73
    20:1 Note off 0, note 67, velocity 35

    20:1 Note on 0, note 75, velocity 74
    20:1 Note off 0, note 67, velocity 35
    20:1 Note off 0, note 72, velocity 42
    20:1 Pitch bend 0, value 8191
    20:1 Pitch bend 0, value 1848
    20:1 Note on 0, note 70, velocity 84
    20:1 Note off 0, note 75, velocity 23

    The pitch bend itself is mostly unresponsive (does not trigger many events when actioned).

    Is there anything that can be done outside filtering these unwanted events (i can live without a pitch bend wheel, but in its current state it is impossible to play) ?

    Regards,

    Julien

    #30897
    Amanda
    Member

    Hi,Julien

    It seems the pitchbend potentiometer is broken. Because UF keyboards is stopped production many years. So there is no spare parts for it in the factory. Sorry about this.
    It seems you don’t need to use pitchbend function now. The fastest way is disconnect the pitchbend line from the circuit board. In that to avoid the useless message for you.
    Hope this will help you, If you have any more question, please send mail to me. (wma@centrmus.com) Thanks.

    Best regards

    Amanda

    #30902
    julien
    Member

    Hi Amanda,

    Thank you for your answer. I sent you an email last tuesday, about the service manual. Did you receive it ?

    Regards,

    Julien

    #30903
    julien
    Member

    Searching a bit, I found some videos and tutorials about the uf8 disassembly. I was a bit surprised that the screws are not exactly at the same positions as my keyboard, there must have been different chassis revisions. Would be nice to have a true service manual, especially if it already exists, though.

    The good news is that disconnecting the pitch bend did the trick : the keyboard no longer sends random pitch bend events.

    Best regards and thanks for your support,
    julien

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