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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Cut the wire ties that hold the wire harness to the chassis. Disconnect pin connectors Jl, J2, J3 and J4 from the power supply board. Shields If the keyboard you are replacing has a keyboard shield on the bottom see figure for location and the replacement keyboard ensohiq not, remove 5 6 CHAPTER 1. Turn the unit off. Reconnect the wire harnesses paying at- tention to polarity. There is a printed label covering the disk drive on every new unit shipped.

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The disk drive shield You will find that there is a metal plate located on the bottom of the disk drive see figure. Make sure the disk drive ribbon cable is not caught underneath the keayboard standoff. Disconnect the two cables from the disk drive, paying particular attention to polarity. Install the new line filter from the outside of the case. Transport the unit only with either a enxoniq sheet in the drive or nothing in the drive at all. Remove the metal shields from the unit.



Remove the seven nuts from the rear panel jacks marked Sustain Ft. If the unit does not have shields, do not add them.

Pitch and mod wheels and plenty of front-panel buttons and a few sliders make accessing and editing fairly easy and hands-on. To replace the line filter, first make sure that the foil shield is in place.


Insert the new keyboard rear first into the unit at the front of the keyboard cavity. See figure I for location of screws. Pins 19 and 17 are the uppermost two of the right tow of pins on J3. Please do not ship an SQ80 or replacement disk drive in a box packed with peanuts. The ensoinq message should appear. Before installing the new circuit board, make sure the cardboard insulator is in place. Manual Find patches, info and sequences for the SQ at this Ensoniq synth site. Reconnect the two cables, paying particular attention to the alignment of pins and connectors.

Polyphony – 8 voices. Short the Zower lead of R1 to the bottom left pin pin 28 of U The following chart details how the front panel buttons are mapped in self-test mode; Press Display reads Seq 9.

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With the board tilted on a slight angle, insert the jacks into the holes in the rear panel. Disconnect the cables from the disk drive, paying particular attention to polarity. To reassemble, first make sure that the Insulator and all the buttons are in place. Gently slide the keyboard toward the rear of the unit, lowering the front of the keyboard needed to clear the control panel mounting tabs.

Test the unit to make sure the keyboard is working properly. XX indicates the main operating system version, YYY indicates the keyboard operating system. Accessories and Parts from Syntaur. If any signal is recorded on the tape, it is safe to assume that the tape output is working correctly.

For this reason, periodic backing up of all program and sequence data and manuall is recommended. Raise the control panel and discon- nect manal keyboard ribbon cable J3 from the main board, paying partic- ular attention to its polarity. Images from Perfect Circuit Audio. Reconnect the three wires to the filter, again noting the proper polarity. Note that if either fuse blows, you will need to replace both fuses, as one will blow the other. Power the SQ80 on.

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