Yamaha SY99 - User Manual
Yamaha SY99 – User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Electric Shock Hazard Warning
- Page 8 – The morning brew of Java!
- Page 10 – Step 9 – Insert Batteries and Check Voltage
- Page 11 – DM1 Card
- Page 12 – Part
1
Yamaha SY99 Battery Replacement Procedure
Author
Derek Cook, December 2012
Purpose of Document
Like a lot of synthesizers, the SY99 uses CR2032 Lithium Cells to backup the data and
internal sample memory.
The SY99 has two batteries
•
One on the DM1 card for internal data such as voices;
•
One on the DM2 card for internal custom samples.
These batteries tend to go for 20+ years without any problems; much longer than the
typical life quoted in the user manual.
Unfortunately on the SY99 the batteries are of the type that have solder connections, and
are soldered to the PCBs, which makes replacing them awkward.
Whilst performing my SY99 display upgrade (see related guide), I noted that one of the
batteries was quite low in voltage (around 1.1V), so time to replace them, and also time to
put in batteries holders to make replacement easier next time around (circa 2034!).
This guide shows you what I did to achieve this, written as a separate guide, and assuming
this is the only job that you are doing on the synth.
I couldn’t find battery holders that had the correct pin spacing for the PCB layout for the
soldered batteries, but this didn’t deter me!
Disclaimer
Whilst I have taken care in preparing this guide, and whilst the upgrade worked fine on my
SY99, I cannot be held responsible for any damage that you could do to your machine or
injury to yourself and/or others as a result of you following these notes; either on your own
account or by any error or omission in this guide. You do this upgrade entirely at your own
risk!
Please bear in mind that during a production run of any manufactured item, a manufacturer
can make changes, and I can’t guarantee that all SY99 machines are identical, as I only
have the one. So care is needed in checking that the steps advised are appropriate for your
machine, as it might be different to mine.
Pre-Requisites
First of all, make sure that you’re comfortable with the concept of dismantling your beloved
SY99, including unsoldering the batteries from the synth’s circuit boards.
You also need to be proficient in soldering, or know somebody who is and who can help you.
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Other Manuals for Yamaha SY99
Summary
2 You will need the following tools to do this job: • Posidrive screwdrivers; • Wire cutters; • Some small fine nose pliers also come in handy; • Soldering iron and solder; • A desoldering pump, or solder removal wick; • An anti-static wrist strap is recommended; • Voltmeter (to check battery voltag...
8 Step 7 – Prepare the Battery Holders As mentioned, I couldn’t find battery holders with the correct pin spacing, but I was OK with that as I felt that I could improvise! The holders that I found (see the Parts List at the end of the guide) had the terminals on small legs, so there was space to fee...
10 Shape the lead and cut it short so that it fits under the holder. Strip and tin the lead ready for soldering into the PCB. Put a double sided self adhesive pad, cut to size, where the +VE pin was cut short. This will help secure this side of the holder to the PCB, and it also insulates the pin th...
