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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Once the rear of the keyboard has cleared the control panel mounting tabs, the keyboard can be manuual from the keyboard cavity. This will avoid you having to replace the cable as well.

If the unit does not have shields, do not add them. For more detailed debugging hints, see the flow chart on page 12 and hardware notes on page There should only be sound coming from the right channel and adjusting the pan setting should have no effect.

SQ 80 Ensoniq SERVICE MANUAL | SynthXL – Service & Repair Manual

For more details on replacing the disk drive, see Appendix J. If the main board is at fault, try re-initializing the unit as outlined in step 14 of the SQ80 test procedure page 23, also see flow chart on page Enxoniq the keyboard ribbon cable to the main board. Remove the six seres that fasten the metal main board shield of present to the case and keyboard frame.


Carefully reconnect the three cables, paying particular attention to the alignment of pins and connectors.

ENSONIQ SQ-80 User Manual

Attach the metal plate to the new disk drive using the two seres and star washers. Reinstall the metal main board shield if mnual. Weights The weights inside the white keys of some early units have tended to fall out and roll about in the case.

Remove the four screws that fasten the control panel and raise it see page 11; Important things to know about the SQ80 – Lid inserts. If the ribbon cable is mis-pinned, fuses F3 enssoniq F4 will be blown.


Oscillators – 24 osc. Try level between the two.

In this case you should mwnual the power supply unloaded before proceeding. Remove the two seres and nuts that secure the power supply to the case.

Great for organs, analog-type sounds, pads and sound effects. When the glue sets, the screws will hold the sub-assembly tightly in place. Avoid over-tightening screws in the plastic case when execnting any repair procednre! If no level shows on the tape deck meters, check your connections and level settings.


There is a printed label covering the disk drive on every new unit shipped. Three LFOs are onboard for some pretty wild modulation of the sounds you create or edit. Unlike many computer systems, the SQ80 does not automatically discard bad sector.

Later, a brass insert was added to the main board ground boss and the ground wire from the main board was eliminated. In some units, these shields are attached using tinnerman clips with the screws. Close the front panel.

If the cable is mis-pinned or backwards, fuses F3 and F4 will blow and cause the display to enssoniq up blank. There are also 5 sampled drum sets. Note; When re-initializing, the forty factory sounds will automati- calle be loaded into memory. On bootup the display appears intact and works, sort of displaying characters that are randomly related to the menu but are Disconnect the harness from the main board, from the keypad display board and from the pwoer supply. Reinstall the keyboard and metal shield see Appendix C.