Abstract. This document is based on the original SQ80 Service Manual, which turned out to be hard to get. I was lucky getting a copy from. The (E)SQ synthesizers aswell as Ensoniq’s first sampler (which was a great .. fail and you need to reformat it manually (see for details). View and Download ENSONIQ SQ user manual online. cross wave. SQ Synthesizer pdf manual download.

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Disconnect the cables from the disk drive, paying particular attention to polarity. Failure on this page indicates a problem with the corresponding part, although it could also indicate a power supply failure or a main board problem.

Be sure to use machine screws in those units where brass inserts are present. Before installing the new circuit board, make sure the cardboard insulator is in place. The sign-on message should appear. 800

ENSONIQ SQ-80 User Manual

For more detailed debugging hints, see the flow chart on page 12 and hardware notes on page ebsoniq Place the unit upside down on a soft surface. Turn the unit off. Once the rear of the keyboard has cleared the control panel mounting tabs, the keyboard can be turned over. Unlike the JU, however, there is a door over the drive opening.

The tempo should increase. Of course, the above messages may mean just what they say.



Note; In some cases, a defective main board can garble the contents of the storage cartridge. Make sure the disk drive ribbon cable is not caught underneath the keayboard standoff.

Too low a record level will bury the data in tape hiss. If certain buttons do not function properly during normal SQ80 operation, test them while the unit is in self-test mode.

Replace the main board seres and secure the jacks with the nuts. If the display is found to be defective, be careful when removing it. Note that you should remove the pin ribbon cable from the main board at J3 instead of from the keyboard.

Making note of the proper polarity, remove the keyboard ribbon cable from the old keyboard and install it on the new one. The new drive is distinguished by a red LED drive light.

This plate must be installed to ensure proper operation of the drive. You should now be able to re-initialize the unit as described above. Like the classic ESQ-1, the SQ functions in providing analog-type 4-pole lowpass filtering and editing of digital waveforms. Remove the seven nuts from the rear panel jacks marked Sustain Ft.

Display information to the Main Board is processed through the keyboard so what might appear to be a frozen display could instead be a 8 keyboard. With the power off disconnect the pin keyboard cable from the enspniq board at J3then use a clip lead to connect pins 19 and 17 of J3 together.


Manual Find mnaual, info and sequences for the SQ at this Ensoniq synth site. If the unit already has a ferrite bead, failure indicates a main board problem. Do not tighten the screws any further.

The standoffs are intended only for support and should not be stuck down to the case. If no level shows on the tape deck meters, check your connections and level settings. Eailure to hear the metronome indicates a main board problem. These enspniq include multi-sampled transient attack waves such as violin bow, plectrum picks, mallet, hammer, breath attacks and percussive sounds.


When the glue sets, the screws will hold the sub-assembly tightly in place. Reinstall the knobs on the data entry and volume sliders. Unlike many computer systems, the SQ80 does not automatically discard bad sector. Tape both halves in place with electrical tape, then use the supplied heat shrink tubing to secure proper insulation. This work-around just changes the order in which the three buttons are pressed. Cut the wire ties that hold the wire harness to the chassis.

If the ribbon cable is mis-pinned, fuses F3 and F4 will be blown.