Maintenance and repair of my DTM equipment: Roland M-160 analog line mixer

Today I changed “Roland M-160 analog line mixer” power supply cable.

I used microphone cable as substitute to power cable.

This was very effective to improve the sound.

Countenance becomes musical, sensitive, and comfortable.

Nice low and middle range.

Some regretting points exist.

Later… also about failed pan bots cleaning…


Errors I met to use AIY Voice Kit from Google

Errors I met.

Couldn’t use my 32GB Micro SD card.

Couldn’t authorize “AIY-voice-kit-python/src/examples/voice/”.

Re make new project on Google Chrome and used ssh of Chrome extention solved OAuth authorizing problem. 😄

(Used default Micro SD card.)

ssh commands memo

ssh pi@ipAdress #connect to raspberry
#cp from Local to Remote
scp '/home/masa/Downloads/client_id.json' pi@ipAdress:/home/pi

To solve error message below
masa@em-p:~$ ssh pi@
The authenticity of host ' (' can't be established.
ECDSA key fingerprint is SHA256:WC9qeJxGqf1L0Ne29soplRZ0TBzy2nEeeAKjaDCkYQs.
Are you sure you want to continue connecting (yes/no)? no
Host key verification failed.


at ~/.ssh/config

host 192.168.1.* 
StrictHostKeyChecking no

Permission change to 600.

chmod 600 ~/.ssh/config

Japanese Ref site

HDDからSDDへの移行 On NEC LaVie

La Vie というのはフランス語で、人生とか、生活、暮らしとかいう意味みたい。




sudo dd if=/dev/sdb3 of=/dev/sda2 bs=64k conv=noerror,sync status=progress







a disk read error occured
Press Ctrl + Alt + Del to restart


chkdsk /f をウィンドウズで頼む、とエラーメッセージが出ていた。

はい、でも、それって何ドライブですか?笑 Cドライブじゃないでしょ?ちょっとわからなかった。



Palit 2.5 SATA 3 120GB UVS10AT-SSD120



Maintenance of electronic musical instruments

I’m maintaining S3000XL, S900, M-160, Re-201, etc…
I opened S3000XL, S900, M-160 but not Re-201 yet.
Once I tried to open Re-201 and failed, I dropped a parts while I was removing screws and I left it to Official Support Center of Roland.

I’m using this contact cleaner

And Kure 5-56…😃

I could remove at least 50 % of contact noise with them!!!

But someday I want to wash print circuits, change some parts of  them like op-amps, power supply cables, etc …

And Re-201 needs demagnetize of heads, cleaning of roller, tape replacement etc…

DTM, Digital Audio Instruments Memo

Midi Thru

“What is a MIDI Thru?
A MIDI thru port provides a copy of the MIDI signal arriving at a corresponding MIDI in port. The data from the MIDI THRU socket can then go forward to the MIDI IN socket of another receiving device. … Software elements involved with routing MIDI data in computers are sometimes called MIDI thru utilities.”
Machine Drum’s Midi machine won’t output signal to Midi Thru.
That’s natural, but able to routing Midi signal from MachineDrum Midi machine to Midi Thru was preferable in my case…


Local Control

Midi Sync (Start, Stop, Clock)

Unsolved: Start Pattern of SP303 from MachineDrum


Akai s3000XL – Floppy Disk Drive cable replacement.

Normal FC-40P Data Cable replaceable? — Flat cable?

I have also S900, I heard it can use Zip drive.


I’m considering connect Mo drive to Akai S3000XL by this cable.

SCSIケーブル DB25オス-HDB50オス

Akai S3000XL archive of official page

My Ubuntu could install Mesa by wine but couldn’t Launch…

This site seems funny

I remember, Once I replaced Akai S900 floppy disk drive and EL Back-light.
*Floppy drive
*Flat cable

Unsolved: How to use NI AUDIO 10 Audio interface on Ubuntu

pavcontrol = PulseAudio Volume Control

Maybe I should configure .asoundrc

Reference here:

This is for AUDIO 6, not for 10.
And I also have configure for wine.



@”test stream w/ sound alsa loopback”

asoundrc = ALSA configure file. Usually at $HOME/.asoundrc

??? Can I check AUDIO10 device from my terminal?
??? How to check my alsa firmware version?



pcm.NAME {
 type hw # Kernel PCM
 card INT/STR # Card name or number
 [device] INT # Device number (default 0)
 [subdevice] INT # Subdevice number, -1 first available (default -1)
 mmap_emulation BOOL # enable mmap emulation for ro/wo devices

Source code

Alsa firmware source code ( Now not used, for reference)

#hotplug #firmware #driver #loader #alsa-tools #