My name is Roland Plandt and my walka is on E100-4 mode.I need it to be online again

I got this free Pdf manual from an online store for free and I don't think Ive visited a mechanic or fixya for help for more than 3-4 times out of the all the times I fixed the chipper in these 4 years

https://medias.audiofanzine.com/files/fp-2-om-478648.pdf
https://static.roland.com/assets/media/pdf/FP-90_e01_W.pdf
http://www.pianorent.dk/digitalpiano/roland-f140r/dokumenter/RP401R_F-130R.pdf
http://www.rosaudioservice.ru/uploads/attachments/pdf/owner-s-manual_FP-50_OM.pdf

https://www.roland.com/global/products/fr-4x/
https://www.roland.com/us/support/knowledge_base/203033135/
https://www.long-mcquade.com/74269/Band---Orchestral/Accordions/Roland/V-Accordion---Red.htm
https://www.gear4music.com/Woodwind-Brass-Strings/Roland-FR-4X-V-Accordion-with-Keyboard-Black/1PBQ
https://www.gumtree.com.au/s-nsw/keyboard+piano+roland/k0l3008839

I would suggest updating to the latest software first to see if that solves it.
BR 900CD Downloads Support Roland
If not, contact Roland Support for suggestions or the name of your nearest Roland repair center
Customer Service can be reached at 323-890-3700 x 7005.
They are available Monday through Friday between the hours of 8:30am and 5:00pm Pacific Standard time.

Try plugging in the pedal with the Roland powered down or off. With the pedal plugged in, turn the Roland on again. The Roland should sense the polarity upon power up. If this doesn't work, I have had those pedals get defective right out of the box, so try this...Get a ¼ inch guitar or signal cable and plug that into the damper jack. The cable will represent an open circuit polarity since nothing is shorting out the leads. See if the EP77 is sustaining or if it is not. Alternately, try shorting the guitar cable by laying a piece of metal across the top and bottom of the jack. A pocket or kitchen knife or any bare wire will do. If this does not work, your assumption about the power supply may be correct.

The unit name is part of the boot sequence, it should go beyond that and boot up completely. If it gets stuck there, there is surely some problem. Maybe a depleted internal battery, I don't know. Ask a local service center, maybe there's a combination of buttons you could check out while on the phone prior to bringing it in for repair...

https://www.amazon.in/Roland-JC-120B-Chorus-Guitar-Amplifier/dp/B00S0J6IS6


JC-120B 1975 or later

JC-120UT After 1984 - I haven't found the way to identify your serial number online. You may need to post a message on one of the many internet boards shown.

https://www.ssguitar.com/index.php?topic=2243.0

http://music-electronics-forum.com/t35754/https://www.gearslutz.com/board/so-many-guitars-so-little-time/181432-roland-jc-120-tough-date.html

JC=120UT /JA sold in Japan only.

https://www.gearslutz.com/board/so-many-guitars-so-little-time/181432-roland-jc-120-tough-date.html


ervicerepairmanuals.net/others/roland-jc-120ut-searvice-manual/






http://ervicerepairmanuals.net/others/roland-jc-120ut-searvice-manual

The name for the notes that don't stop playing is "Dreaded MIDI Drone". It is caused by multiple note on commands and lost "mating" note off commands.

Also read "c." on page 80 regarding buffer length and "choppy" sounds.