Yamaha SY99 Manuel d'utilisateur

Yamaha SY-99 Backlight Replacement Tutorial Copyright 2004, Christopher Baxter The following is a detailed explanation of how to replace the backlig

Remove the LCD assembly from the case. It will have a grey ribbon cable and the red/black wire harness still attached. Be careful with these when mov

Step 4: Backlight Replacement Here’s the fun part! This is also the step that you would skip if you decided to send the LCD assembly to a tech for

Very carefully separate the LCD glass and black bezel from the circuit board. You may need to use the small flat-head screwdriver to help pry

Carefully reassemble the LCD/bezel (make sure it is right-side up…) to the circuit board bending the fingers back in place and resolder the soldered f

Step 4: Spring Cleaning I took the opportunity at this point to clean everything out before putting everything back together, and this would be the a

Replace the Data Card slot assembly (making sure to also reattach the ground wire to the synth chassis). Replace the Memory Expansion metal housing.

Turn the synth over and plug it in. Assuming everything went correctly, you will now have an operational backlight! If not, you will likely have to

Step 2: Tools, Equipment, Parts Needed You will need the following equipment to perform this process: • Large clean working surface – I used a bed

Some Highly Suggested Items: • Paper, pen/pencil, permanent marker • Clear (Scotch) Tape • Masking Tape • Electrical Tape • Canned Compresse

Step 3: Disassembly Place your SY in your work area with the bottom of the synth face up and the keys facing you: Remove all of the screws holdin

the process easier to keep track of. Take a permanent marker and mark a couple of lines that extend from the base to the connector so that when you r

Repeat the process for the DM2 System board located on the left-hand side. This is the bigger board. There is a short cable that connects DM1 and DM

You now need to remove the keybed assembly. There are only four black screws holding the keybed to the metal frame, one on each corner. Remove these

Remove the 5 screws holding the Memory Expansion circuit board in place and the large ribbon cable on the left-hand edge and document their settings.

On the right-hand side and underneath the circuit board directly behind the floppy drive area you will see a wire harness with a red and black wire.