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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Remove the seven nuts from the rear panel jacks marked Sustain Ft. You should check these before trouble-shooting the rest of the unit. Manaul the two screws and nuts that secure the filter to the case. Disconnect the two cables from the disk drive, paying particular attention to polarity. The latest software versions are 1. Images from Perfect Circuit Audio. Gronnd insert Initially, all screw holes in the case used self-tapping screws.

Note that these connectors are keyed. When possible, install an identical replacement drive. Note that there are lock washers on the inside only. Attach the metal plate to the new disk drive using the two seres and star washers.

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

Verify that the sequence is retained. Remove the metal shields from the unit. Reconnect the two cables, paying particular attention to the alignment of pins and connectors. Remove the ten screws that attach the keyboard to the manua. Close the front panel. It is therefore important to note the serial number of the unit and to have this information handy when ordering a replacement drive.

This plate must be installed to ensure proper fnsoniq of the drive. Place the unit upside down on a soft surface and remove the four screws that attach the wheel assembly to the case.


Note that there are lock washers mabual each screw and a ground wire leading from the line filter to the center screw remove this wire from the line filter end. Accessories and Parts from Syntaur.

Make sure the disk drive ribbon cable is not caught underneath the keayboard standoff. Yes, it is ok to use high-density disks instead. Cables When reconnection the keyboard cable to the Main Board, make sure that the red line on the cable is on pin 1 and that the cable is not mis-pinned.

Once the rear of the keyboard has cleared the control panel mounting tabs, the keyboard can be turned over.

Turn the right side up. Install the metal shield over the main board of present and replace the six seres manul fasten it to the case and keyboard frame.


This can result from loading data off of a bad disk or not clearing out the system memory after a MIDI SysEx transfer. Eailure to hear the metronome indicates a main board problem. To prevent them from falling out when the board is removed, make sure the control panel is open all the way. Gently slide the keyboard toward the rear of the unit, lowering the front of the keyboard needed to clear the control panel mounting tabs. Lots of treble boost or cut will distort the pulse waveforms on the tape.

Turn the unit off and turn it upside down on a soft surface to replace the ten screws that secure the keyboard to the case.

Full text of “Ensoniq: Ensoniq SQ80 Service Manual”

See Appendix K for more details on how to install this ferrite bead. Failure indicates a main board problem or a poly-pressure keyboard prob- lem. Connect the keyboard ribbon cable to the main board. Appendix A Replacing the Main Board 1. Check the software version level by holding down Record manuxl pressing Master.


Try level between the two.

See figure I for location of screws. When a disk is formatted, the SQ80 reads and writes every track on that disk. Remove the four screws that fasten the control panel and raise it see page 11; Important things to know about the SQ80 – Lid inserts. Always try formatting another blank disk before determining that the disk drive is faulty. If the unit comes in ensoinq a blank display, but is in self- test mode i.

Replace the main board seres and secure the jacks with the nuts. Avoid over-tightening screws in the plastic case when execnting any repair procednre!

Remove the keyboard from the case by gently lifting up the front of it while pulling it toward the front of the unit. Remove the keyboard and metal main board shield see Appendix C.

This ferrite bead should be added to any earlier unit that seems to have a problem with memory loss.

ENSONIQ SQ-80 User Manual

To reassemble, first make sure that the Insulator and all the buttons are in place. Do not tighten the screws any further. Before replacing the power supply board, first make sure that the insulator pad is in enskniq.

If the same buttons do func- tion properly in self-test mode, then the problem is most likely scrambled software the unit will need to be re-initialized as outlined in step 14 of the SQ80 test procedure. On bootup the display appears intact and works, sort of displaying characters that are randomly related to the menu but are