D-110 ZONE
D-110 ZONE
This page contains D-110 information about;

D-110 ZONE FAQ - Manuals - Service - Troubleshooting - Factory Presets - MIDI
D-110 ZONE SPECS - Dimensions - Power - ROM - RAM
D-110 ZONE PCM CARDS - Additional Timbres
D-110 ZONE RAM CARDS - M-128 / M-256 / M-512
D-110 ZONE ACCESSORIES - Programmer - PCM Cards - Switches - Etc...
D-110 ZONE SPECIFICATIONS - Dimensions / Power / Audio / Memory
D-110 ZONE ROM IC VERSIONS - ROM Revisions - Bug Fixes
D-110 ZONE POWER SWITCHES - High Quality Replacements
D-110 ZONE ERROR MESSAGES - Common Error Messages And Troubleshooting
D-110 ZONE LCD REPLACEMENT - A Fancy Winstar/Raystar OLED Screen Replacement!
D-110 ZONE PG-10 PROGRAMMER - The Holy Grail Of Hardware Programmers
D-110 ZONE BATTERY REPLACEMENT - Internal Battery DIY
D-110 ZONE VOLUME POT REPLACEMENT - Scratchy Or Intermittent Volume? Here's The Fix
D-110 ZONE TACT SWITCH REPLACEMENT - Unresponsive Front Panel Buttons? Part #'s / Pointers
U-20 ZONE CUSTOM MULTI-BANK RAM CARDS - An Innovative RAM Card Design From Deutschland
SUPER JX ZONE FAVORITE DIY TOOLS AND DIY VENDORS - Tips For DIY Freaks Who Like To Save $$$


D-110 ZONE     D-110 ZONE D-110 ZONE - BATTERY D-110 ZONE     D-110 ZONE



ANIMATED_STAR I think these two topics are important enough to place at the top of all my synth INFO webpages

FRACTURS_AND_MIDI

1) I buy a lot of broken synths on eBay and I'm able to fix about 90% of everything I find. It's usually a simple fix. If you have a synth with no power or intermittent problems after it warms up, it's probably due to the fact that back in the 1980's Roland and other synth makers used sub‑par solder and/or not enough solder to hold components in place. After 30+ years, the solder begins to break down and hairline fractures appear. This occurs at a higher rate for components which generate a lot of heat like Bridge Rectifiers, Power Transistors, large Electrolytic Capacitors, power input jacks and audio sockets which get a lot of use. The best approach is to use a magnifying glass and carefully inspect the backside of the circuit board. If you spot any suspect areas, re‑flow a hefty amount of NEW solder



2) I receive a lot eMails and field many questions at synth related forums and also on Facebook. The most common question I get about problems with a synth has to do with errors when trying to load Patches and Tones. About 99.9% of the time, the problem always turns out to be a crappy MIDI interface. If you have a cheapo MIDI interface which looks similar to the one shown on the right... throw this piece of shit in the trash! Do It Now. Seriously! This thing is total junk and you get what you pay for. Inexpensive MIDI interfaces like this are unable to properly regulate the buffering of MIDI data. They will work fine with simple messages such as CC, Note On, Note Off, etc... however, when you try to send SysEx messages which are much longer, the SysEx data cuts off after only sending a few bytes. Investing in a higher quality MIDI interface will solve Load/Save errors and other communication problems



Dump to MIDI Rejected - F@#%&! Error Message!!! - Yeah! I was going crazy trying to stop this fun little error message from happening while performing a simple Bulk Dump of all the Patches. I finally figured out what the problem was. Set SYSTEM OVERFLOW = OFF. It's very confusing as to why this would interfere with a Bulk Dump command. My D-110 has an older ROM IC (v1.06) which may be the cause. This error looks like it was fixed in ROM IC v1.11 and higher. This is how to make it make it work with any ROM IC version...
Get rid of the annoying "Dump to MIDI Rejected" error message

Press [ SYSTEM ] and the display should read:
     SYSTEM
     Master Tune=442


Press [ PARAMETER GROUP △ ] four times and the display should read:
     SYSTEM
     Overflow = ON


Press [ PARAMETER BANK ▽ ] once and the display should read:
     SYSTEM
     Overflow = OFF


Press [ EXIT ] then dump all the Patches via SysEx
Dump all the Patches via SysEx

Press [ WRITE/COPY ] and the display should read:
     Save To Card
     Sound


Press [ PARAMETER GROUP △ ] twice and the display should read:
     Dump One Way
     Sound


Press [ PARAMETER BANK △ ] twice and the display should read:
     Dump One Way
     All


Press [ ENTER ] and the display should read:
     Dump One Way
     All           Sure?


(Prepare Your SysEx Program To Receive Data)


Press [ WRITE/COPY ] and the display should read:
     Complete
Note: I've seen several posts online about slowing down the transmit speed of the SysEx program to help eliminate SysEx transmission errors because the computer speed is too fast. I've been using a 3GHz Mac, Scarlet 2i4 MIDI interface and Snoize Generic SysEx Librarian. The transmit speeds are completely maxed out. I have tried it both fast and slow and it doesn't seem to make any difference for my setup. Bulk Dumps and Bulk Loads work fine either way for me. Other users have reported that SysEx related error messages occur when using el‑cheapo inexpensive MIDI interfaces and sub-standard MIDI cables. Some inexpensive MIDI interfaces which look similar to this one are unable to properly regulate the buffering of MIDI data. Some of these inexpensive MIDI interfaces will work fine with simple messages such as CC, Note On, Note Off, etc... However, when you try to send SysEx messages which are much longer, the SysEx data cuts off after only sending a few bytes. Investing in a higher quality MIDI interface may solve Load/Save errors and other communication problems



* * * FAQ: D-110 * * *
   QUESTION    ANSWER
Where Can I Find An Owner's Manual For The D‑110?
HAZARDOUS MANUAL
The D‑110 Owner's Manuals is one of the worst manuals ever written. It is chaotic and extremely difficult to follow. The complicated menu architecture of the D‑110 deserves a better guide but this is all that is available online

        D-110 D-110 Owner's Manual (v.90-11)


FREE Owner's Manuals for almost every synthesizer and effects device can be found at

        D-110 midimanuals.com
Where Can I Find Service Manuals And Schematics?         D-110 D-110 Service Notes (v.88-6)

Gigantic collection of Service Manuals w/schematics at this link. The highest quality PDF's on the Internet

        D-110 synfo.nl
What Does The D‑110 Sound Like? A funny and informative video about the D‑110        D-110 Demo AudioPilz D-110 Demo

The eight demo songs inside the D-110       U-20 Demo Song D-110 Demo Songs

A selection of some factory presets        D-110 SynthMania
I Can't Get The D‑110 To Communicate With My Computer When Using A Librarian, SysEx Program Or Sequencer. What Should I Check? Two of the most common problems are with the FIRMWARE and/or the MIDI INTERFACE

1) FIRMWARE - As you may have noticed, there have been several firmware revisions and bug fixes made to the D‑110 over the years. Much more than other Roland synths!!! If your D‑110 has an EPROM version 1.09 or lower, you will experience a long list of problems with SysEx. Notably, trying to load Patches and Tones will sometimes fail. The only solution is to update your EPROM with version 1.10 or higher. Info on upgrading to a higher version is here and here

2) MIDI INTERFACE - Another thing to check is the MIDI interface connected to your computer. Some inexpensive MIDI interfaces which look similar to this one are unable to properly regulate the buffering of MIDI data. Some of these inexpensive MIDI interfaces will work fine with simple messages such as CC, Note On, Note Off, etc... However, when you try to send SysEx messages which are much longer, the SysEx data cuts off after only sending a few bytes. Investing in a higher quality MIDI interface may solve Load/Save errors and other communication problems


Additional Troubleshooting Info
  • Is the D‑110 set to SysEx Device ID = 17?
              Press [ SYSTEM ]
              Press [ PARAMETER GROUP △ ] three times
              The display should read: SYSTEM - Exclu Unit#= 17
              If not, press [ PARAMETER BANK △ or ▽ ] and set Exclu Unit#= 17
              Press [ EXIT ] to resume normal play mode

  • Is the computer Sound Card, MIDI Controller, SysEx Librarian, etc... set to MIDI Channel 1?

  • Is the computer Sound Card, MIDI Controller, SysEx Librarian, sending MIDI data to the D‑110?

  • Make sure your Patch Librarian or SysEx program can send and receive SysEx data to and from the D‑110

  • Do you have two MIDI cables connected? Two are required because SysEx uses both MIDI IN and MIDI OUT

  • The MIDI Send and Receive settings on your computer might be too fast for the D‑110 MIDI buffer to handle. The D‑110 synth was manufactured back in Medieval times when the processor speed of a home computer was only 20MHz... much slower than the models of today at 4GHz. Try setting the MIDI transmit speed in your computer's SysEx program to a smaller value. Recommended values for Snoize, Bome and MIDI‑OX are 390ms
How Do I Restore The D‑110 Factory Preset Patches Or Load An Alternate Set Of Patches? To restore the Factory Preset Patches, you will need a Mac, PC or LINUX computer with a generic SysEx loader program. It is also possible to quickly restore the Factory Preset Patches if you have an optional RAM Data Card*

[ WARNING!!! Everything in the internal memory will be erased! ]

To perform a Bulk Load


1) Use your computer's SysEx program to SEND the factory preset file d-110_Factory_Presets.SYX. The load process is automatic

2) Nothing will be shown on the the LCD display however, the green MIDI RECEIVE LED should blink during the load process

3) If the Patches won't load or if you receive a Dump to MIDI Rejected error message, change the SYSTEM OVERFLOW = OFF setting here


If the Bulk Dump procedure did not work, verify the following

     Connect MIDI Out and MIDI In cables between the D‑110 and the computer
     Is the D‑110 set to the correct SysEx Channel?
          Press [ SYSTEM ]
          Press [ PARAMETER GROUP △ ] three times
          The display should read: SYSTEM - Exclu Unit#= 17
          If not, press [ PARAMETER BANK △ or ▽ ] and set Exclu Unit#= 17
          Press [ EXIT ] to resume normal play mode

* Info about restoring Factory Preset Patches from an optional RAM Data Card here
How Do I Save All Of The Internal Patches And Timbres Of A D‑110? To save all internal Patches and Timbres, you will need a Mac, PC or LINUX computer with a generic SysEx saver program

To Perform A Bulk Dump

     Press [ WRITE/COPY ] and the display should read: Save To Card - Sound
     Press [ PARAMETER GROUP △ ] twice and the display should read: Dump One Way - Sound
     Press [ PARAMETER BANK △ ] twice and the display should read: Dump One Way - All
     Press [ ENTER ] twice and the display should read: Dump One Way - All - Sure?
     (Prepare Your SysEx Program To Receive Data)

     Press [ WRITE/COPY ] and the display should read: Start
     After the transfer is complete, the D‑110 LCD will briefly display: Complete
        Note: The MIDI MESSAGES green LED will NOT flash during the transfer
        The D‑110 will only flash the MIDI MESSAGES green LED for MIDI IN messages

     Use your computer's SysEx program to save the Bulk Dump as a *.SYX file
     Press [ EXIT ] to resume normal play mode


If the Bulk Dump procedure did not work, verify the following

     ❖ Connect MIDI Out and MIDI In cables between the D‑110 and the computer

     ❖ Is the D‑110 MEMORY PROTECT set to OFF?
             Press [ SYSTEM ]
             Press [ PARAMETER GROUP △ ] one time
             Press [ PARAMETER BANK ▽ ] one time
             The LCD display should show Mem Protect= OFF
             Press [ EXIT ] to resume normal play mode

     ❖ Is the D‑110 set to the correct SysEx Channel?
             Press [ SYSTEM ]
             Press [ PARAMETER GROUP △ ] three times
             The display should read: SYSTEM - Exclu Unit#= 17
             If not, press [ PARAMETER BANK △ or ▽ ] and set Exclu Unit#= 17
             Press [ EXIT ] to resume normal play mode

If you receive a Dump to MIDI Rejected error message, change the SYSTEM OVERFLOW = OFF setting here
How Do I Change The Internal Back‑Up Battery?
CR2450 Battery
Replacing the battery on a D‑110 was the easiest ones I have encountered to date. There is a battery holder already installed. Just pop the cover off and change the battery

         MKS-50 D-110 Battery Replacement Guide
How Do Initialize The D‑110? !!! WARNING !!!
Everything In The Internal Memory Will Be Erased. Everything... As In EVERYTHING!
Back-up Your Patches Before Initializing Your Synth.


HAZARD ICON


D-110 Factory Reset (see WARNING!!!)
     While holding [ WRITE/COPY ], turn on the power
     Press [ ENTER ] to confirm
How Do I Replace The LCD On The D‑110? I LOVE it when other D‑110 owners share their DIY info for free!!! Ray Bellis has designed a 3D bracket for use with a fancy Winstar/Raystar OLED. A 3D printable mount bracket is available from Thingiverse and Ray has released the free 3D print files under a Creative Commons/Non-Commercial license. Detailed info about the Winstar/Raystar OLED model numbers and bracket is available at this link. There are also several ongoing discussions about the D‑110 and other synth/sampler LCD/OLED upgrades/replacements at Facebook in the Music Gear Display Retrofits group
OLED

OLED          OLED
The Buttons On My D‑110 Or D‑10 Are Intermittent. Is There A Way To Fix It? 30 Years later, the buttons (tact switches) are starting to fail. The best solution is to replace all of them at the same time because if you only replace a few, others are bound to fail soon after. eBay and other vendors sell complete sets of tact switches and these range anywhere up to $60. Ouch! You can save a lot of money buying them instead from an electronics supplier such as mouser.com
D-110
There are two types of tact switches to choose from. I prefer a harder press Operating Force of 2.6 Newton*. A total of 16 switches are needed for the D‑110. You will need 39 for the D‑10 (Do yourself a favor and buy a couple of spares because... shit happens)


1)    Brand Name: ALPS
        Manufacturer P/N: SKHHAMA010
        Mouser P/N: 688-SKHHAM
        Operating Force: 1.6 Newton
        Operating Life: 500,000 cycles
        Size: 5mm (H) x 6mm (W) x 6mm (D)


2)    Brand Name: ALPS
        Manufacturer P/N: SKHHARA010
        Mouser P/N: 688-SKHHAR
        Operating Force: 2.6 Newton*
        Operating Life: 200,000 cycles
        Size: 5mm (H) x 6mm (W) x 6mm (D)



SUPER JX
The Operating Life for all of these switches is realistically 10 years until stress and/or oxidation starts to set in and they become intermittent. Removing old tact switches from the PCB is a matter of personal preference. The method I prefer is by using a small sharp pair of diagonal flush wire cutters and cut all four leads off from the top side of the PCB. Take extra care not to wedge the wire cutters in‑between the base of the tact switch and the PCB when cutting the leads. This places excess force on the eyelet trace on the underside of the PCB causing possible damage. Use a solder sucker, a fine tipped soldering iron or a stainless steel hollow desoldering needle and remove the leftover pins from the PCB holes. Remove any excess solder remaining in the holes. The eyelet traces on the brittle 30‑year old PCB are very fragile. Take extra care not to lift them off the surface of the PCB while desoldering. Using too much heat or keeping the soldering iron too long in one spot usually leads to this type of problem

               SUPER JX Tact Switch Reference Page For Other Roland Synths/Samplers

How Do I Fix A Scratchy Volume Pot Or Fix Problems With Intermittent Volume Levels?
D-110_VOLUME_KNOB
Replacing this part on the D‑110 is very easy. It's a "Drop‑In" part and no modifications are needed. Just unsolder the old potentiometer and pop in this replacement. It's a 50K Ohm Dual Gang Logarithmic Taper and is available from Mouser for only $2 (USD)

     Mouser P/N: 652-PTD902-2015KA503               Bournes P/N: PTD902-2015K-A503

I've added some notes about replacing this part at the end of the D-110 Battery Replacement Guide webpage

         MKS-50 D-110 Volume Knob Replacement

Other Than A Keyboard, What Are Some Of The Main Differences Between The D‑110 And The D‑10?
  • The D-110 is able to store 64 Patches. The D-10 is able to store 128 Patches
  • The D-110 has 6 individual 1/4" audio output jacks and 2 Mix Out Jacks. The D-110 only has 2 Mix Out Jacks
  • The D-10 has two 1/4" input jacks for connecting a Start/Stop Pedal and a Hold Pedal (DP-10 / DP-6 / DP-2 )
  • The D-10 has a built‑in rhythm machine and composer
Audio Outs
Where Can I Get D‑110 Questions Answered? A popular online forum for getting a lot of synthesizer related questions answered is at gearsz.com;

         D-110 http://gearsz.com



* * * ROM IC VERSIONS * * *

D-110

D-110 ZONE

IC19 on the PCB

VER. 1.01  [ 88/xx/xx ]
VER. 1.02  [ 88/xx/xx ]
VER. 1.03  [ 88/xx/xx ]
VER. 1.04  [ Not Used ]
VER. 1.05  [ Not Used ]
VER. 1.06  [ 88/04/05 ]
VER. 1.07  [ 88/06/14 ]
VER. 1.08  [ 88/xx/xx ]
VER. 1.09  [ 88/xx/xx ]
VER. 1.10  [ 88/08/30 ]
VER. 1.11  [ 89/04/14 ]
VER. 1.12  [ 89/12/22 ]
VER. 1.13* [ 90/05/23 ]
* Final ROM IC Version
D-110_ROM_BUGS
Bug fixes for the D110 ROM IC are numerous. A separate page dedicated to the 50+ incidents, revisions and descriptions compiled from service bulletins and service manuals is here. Also included is a link to get the v1.13 firmware binary

       D-110 D-110 ROM IC Bug Fixes




* * * SPECS * * *
DIMENSIONS WIDTH DEPTH HEIGHT WEIGHT
D-110 19" (482 mm) 11 1/4" (286 mm) 1 3/4" (44 mm) 8 lb.  3 oz. (3.7 kg)
D-10 38 3/8" (974 mm) 11 7/8" (301 mm) 3 7/8" (98 mm) 19 lb.  7 oz. (8.8 kg)
AUDIO POWER ANALOG LOWPASS FILTER POLYPHONIC VOICES
D-110 12W -24dB/oct 32
D-10 20W -24dB/oct 32
PRODUCTION YEAR RETAIL PRICE (USD) KEYBOARD MEMORY
D-110 1988 $995 USD None 64 Patches / 128 Timbres / 128 Tones
64 Programmable Tones / 63 Preset Rhythm Tones
32 Maximum Voices
D-10
1988 $1,299 USD 61 Keys - 5 Octaves
(Velocity)
128 Patches / 128 Timbres / 128 Tones
64 Programmable Tones / 63 Preset Rhythm Tones
32 Maximum Voices

INTERNAL BATTERY**
P/N: CR2032**       D-110 Battery Replacement DIY       CR2032 Battery



* * * ACCESSORIES * * *
PCM ROM CARDS

Roland released three Factory PCM ROM Cards for the D‑10, D‑20 and D‑110. These three cards each contain 64 Tones, 128 Timbres and 128 Performance Patches
          Unique D‑Sounds (PN‑D10‑01)  -  Roland   PN-D10-01 List (PDF)
            Rhythm & Bass (PN‑D10‑02)  -  Roland   PN-D10-02 List (PDF)
        Natural Variation (PN‑D10‑03)  -  Roland   PN-D10-03 List (PDF)

Other PCM ROM cards were released by third‑party vendors such as Best Choice, Sound Source Unlimited and Valhala. Unlike Memory Cards, the data contained on a PCM ROM card is hard‑coded so nothing can be saved back onto the cards... these cards can only be read. However, it is possible to load the data contained on these third‑party cards (and also Roland PN-D10-0x cards) into the synth and save all of the Patches and Tones as a SysEx file via MIDI onto an external disk, sequencer or other storage device. This SysEx data can be loaded back into the synth and used even if the PCM card is not plugged in. It is also possible to save this data onto an M‑256 or M‑512 Memory Card for instant access. Nice!!!
               L.A. Synthesis  -  Best Choice
                   Music Pack  -  Best Choice
     Source Live Sound Vol. 1  -  Best Choice
               Digital Synths  -  Sound Source Unlimited
                      New Age  -  Sound Source Unlimited
   International Gold (D-122)  -  Valhala
      Studio Series (Digital)  -  Valhala
PN-D10-XX_PCM-CARDS          PCM Card
ROLAND BRAND RAM CARDS

The slot labeled "MEMORY CARD" on the front of the D‑110 is for use with Roland Memory Cards M‑128D, M‑256(D/E/G) and M‑512(D/E/G). This slot also accepts Roland Factory and Third Party PCM ROM Cards

Memory Cards allow storage for additional Patches, Timbres and Tones. The M‑256 and M‑512 Memory Cards will work exactly the same. However, using an M‑512 Memory Card is overkill because the extra memory on the card is not accessed. The D‑110 was originally designed to work with the smaller M-256 Memory Card... before the larger M‑512 Memory Card was available. The Owner's Manual also states, "...using an M‑128D Memory Card will not enable the use of Patches 51 to 88 or Tones 33 to 64." There's not enough room. Using an M‑128D Memory Card looks like a giant hassle. Pay the extra $$$ for a larger card Smiley

When inserting a Memory Card for the first time or if the card contains data from a different model synthesizer, a message will appear on the LCD Display;
Illegal Card
   Card Formatting
   OK?
To continue, press [ ENTER ] and the card will be formatted
Press [ EXIT ] to continue

TROUBLESHOOTING
A visitor to the GR‑1 Homepage passed along some very useful info about troubleshooting a once working M‑256 Memory Card Thanks for the info, Al! The problem was the error message "NOT GR1" would display but the system would not allow the card to be formatted. The solution was to perform a Full Copy (Dump) of the patches to the card. When the message "FORMAT?" is displayed, press "YES". The "COPY COMPLETED" message will appear. You can now read and write to the card. The standard "FORMAT" option only works for brand new un‑formated and un‑corrupted cards. If you are experiencing M‑256 or M‑512 Memory Card problems on your D‑110, a similar work‑around might be the solution

When inserting or removing cards from the "MEMORY CARD" slot, always make sure the switch on top of the card is set to the PROTECT position to prevent accidental erasure of any data. These cards use an internal lithium coin cell battery which the owner's manual says to replace every 2 years. However, I have found my battery lasting anywhere from 5 to 7 years. The replacement battery is P/N: CR2016 (Note that this is different from the more common CR2032 battery)

         GR-1 MANUALS M-256E Owner's Manual (English / French / German / Japanese)

         GR-1 MANUALS M-512E Owner's Manual (English / French / German / Japanese)
PCM CardRAM Card
LOAD ALL Patches From Memory Card To Internal Memory

Press [ WRITE/COPY ]

Press [ PARAMETER GROUP △ ] once. The display shows:
     Load From Card
     Sound

Press [ PARAMETER BANK △ ] twice. The display shows:
     Load From Card
     All


Press [ ENTER ]. The display asks Sure?

Press [ WRITE/COPY ] to confirm. The display briefly shows:
     Complete


Note: If after pressing [ WRITE/COPY ] the display shows:
     MemProtected
     Turn off once?


Simply press [ ENTER ] to continue

Alternatively, instead of choosing ALL, you can also load individual Sounds and Rhythm Setups from the Memory Card
     Sound (Loads only the Tone, Timbre and Patch)
     Rhythm Setup (Loads only the Rhythm Setup)
     All (Loads the Tone, Timbre, Patch and Rhythm Setup)
SAVE ALL Patches From Internal Memory To A Memory Card

Make sure the PROTECT switch on the RAM Card is OFF

Press [ WRITE/COPY ]

Press [ PARAMETER BANK △ ] twice. The display shows:
     Save to Card
     All

Press [ ENTER ]. The display asks Sure?

Press [ WRITE/COPY ] to confirm. The display briefly shows:
     Complete


Alternatively, instead of choosing ALL, you can also save individual Sounds and Rhythm Setups from the RAM Card
     Sound (Saves only the Tone, Timbre and Patch)
     Rhythm Setup (Saves only the Rhythm Setup)
     All (Saves the Tone, Timbre, Patch and Rhythm Setup)

Custom Multi‑Bank RAM Cards

This amazing custom multi‑bank RAM card is made in Germany. It's the equivalent of having 16 Roland M‑256 RAM cards on one device. It has switches on top so you can easily choose between the 16 different banks. There's no battery and everything is stored on an MRAM chip. The cool thing is that this card works on my D‑110 and also works on other synths I own like the JV‑880, U‑20 and GR‑1. It has a lengthy compatibility list including the Roland A‑90, D‑5, D‑50, D‑550, D‑10, D‑70, JD‑800, JD‑990, JV‑1000, JV‑1080, JV‑2080, GR‑50, PM‑16, TR‑626, R‑880 (GC‑8), R‑8M, Akai MX‑1000, VX600 and others. The ability to move this card between different synths is convenient and a real money saver

CUSTOM_RAM_CARD

There are two RAM card models to choose from: M‑256 or M‑512. Both RAM card models will work exactly the same. However, using the M‑512 Card is overkill because the extra memory on the card is not accessed by the D‑110 (and most other Roland synths). Your best bang for the buck it to get the M‑256 RAM card model which will give you the equivalent of 16 Roland M‑256 RAM cards, not 8 Roland M‑512 RAM cards. I was on a wait list for more than a year but it looks like production has ramped up again. I received mine at the beginning of 2021

For the DIY crowd, there are some interesting modifications discussed in the User Manual to emulate PCM ROM cards or increase the bank sizes anywhere from 16 x 256Kbit, 8 x 512Kbit, 4 x 1Mbit, 2 x 2Mbit or 1 x 4Mbit simply by adding some solder bridges. More specs and ordering info is available at the Saga Musix website

          U-20_HOMEPAGE Custom Multi-Bank RAM Cards From Germany  (External Web Link)

Replacement Power Switch [D-110]
MKS-70 POWER SWITCH
Power Rating: 5A @ 250V AC          Type: ON/OFF w/Four Solder Lugs
Manufacturer

ALPS
Sony / JVC / Panasonic
Roland
Part Number

SDGA3P
554-880-12
13129124
If your old switch is experiencing problems, don't bother trying to repair it. Some of the parts inside this model are sealed in plastic and other parts are wired in place. Repairing it is a lost cause. This power switch works with the D‑110 and a wide selection of other Roland synths and samplers including the D‑550, GM‑70, JV‑880, MKS‑20, MKS‑50, MKS‑70, MKS‑80, MKS‑100, S‑220, S‑550 and U‑220. In the 1980's and 1990's, this power switch was also used with a variety of Sony/JVC/Panasonic TV's and component stereo devices. This power switch is quite robust and therefore more expensive than most. Replacements can be found on eBay for about $10 (USD). Do a keyword search for "ALPS  SDGA3P"
Replacement Power Switch [D-10 ]
The D‑10 power switch is the same part number used on several synths and other Roland gear including the Alpha Juno‑1/2, Super JX‑10, JX‑8P, Juno 60/106, U‑20, JV‑80, JD‑800, D‑20/50/70, MK‑80, and MPU‑101

          SUPER JX Click Here For A Selection Of D‑10 Power Switches

D-10 POWER SWITCH50_SPACERJX-10 ROCKER SWITCH50_SPACERJX-10 ROCKER SWITCH50_SPACERJX-10 ROCKER SWITCH50_SPACERJX-10 ROCKER SWITCH
PG-10 PROGRAMMER

Bypass chaotic front panel editing of the D-110 with this baby

PG-10 PROGRAMMER PG-10 PROGRAMMER



    ERROR MESSAGES                       RESOLUTION
  Check Internal Battery
The internal battery has died MKS-50 Battery Replacement Guide
  Check Card's Battery
The battery for memory backup in the optional memory card (M‑512E, M‑256E, M‑256D or M‑128D is low. Replace it with a new one (P/N: CR2016)
  Memory Protected
  Turn off once?
The Memory Protect in the D‑110 is set to ON. Push the WRITE/COPY button to continue writing, and push the EXIT button to leave the mode
  Card Protected
The protect switch on the memory card is set to the ON position. Set it to the OFF position
  Card Write Error
Data is not correctly written on the memory card. Check if the memory card is correctly and securely connected to the D‑110, then repeat saving
  Write Number Err
This appears when you are using the M‑128D memory card but you've tried to use Patches 51 to 88 or Tones 33 to 64 which do not exist on the M‑128D. Check the Patch or Tone number, then repeat saving
  No Space
This appears when you try to write Patches on a memory card that contains data for D‑10/D‑20
  No Data
This appears when you try to load Patches from a memory card that contains data for the D‑10
  Card Not Ready
No memory card is connected or a memory card is not connected securely. Insert the card securely
  Read Only Card ‑ Couldn't Write  
You have tried to save data onto a ROM card. Data cannot be written onto a ROM card
  Illegal Card
The memory card you use does not contain any data or data other than the D‑110. To write data onto a memory card for the D‑110, take "Internal Memory Card" copying procedure on page 85 of the Owner's Manual (See the Troubleshooting Section if you experiencing problems during format    MKS-50 PCM Memory Cards)
  Exclusive Buffer Full
This appears when the D‑110 receives excess Exclusive messages
  Exclusive Data Checksum Error
This is Check‑sum error of Exclusive messages (Straight from the Owner's Manual. Duh!?!)
  Handshake Mode Timeout Occurred
When performing Handshake Dump, the D‑110 is not connected to an external device which is to receive the D‑110's Exclusive messages or the Unit number is not set to the same number
  Dump to MIDI Rejected
In Handshake Dump mode, the external device rejects data transferred from the D‑110, such as when the external device is playing. (Check here for a solution to this error message. Other users have reported that this message occurs when using el‑cheapo inexpensive MIDI interfaces and sub-standard MIDI cables. Try using quality devices and better cables)


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Safety Precautions and Disclaimer
Modifications made to any factory stock equipment will always pose an element of risk. Sometimes mistakes are made which are irreversible. Improper soldering and handling of electricity can cause serious injury and damage the synthesizer. Use caution when handling static sensitive devices and the PCB. Make sure you are properly grounded, working on a static-free workbench or table and wearing eye protection during any soldering tasks. The author is not responsible for any damage or injury resulting from this DIY info. Use this DIY information at your own risk. And, I can't stress enough, the importance of wearing eye protection while soldering. That stuff flies everywhere sometimes!



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