View and Download ENSONIQ SQ user manual online. cross wave. SQ Synthesizer pdf manual download. Ensoniq SQ Pdf User Manuals. View online or download Ensoniq SQ User Manual. 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.
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To keep this from happening, follow these procedures; 1. When possible, install an identical replacement drive.
If the unit already has a ferrite bead, failure indicates a main board problem. Remove the keyboard and metal main board shield see Appendix C. If the unit comes in with a blank display, but is in self- test mode i. Keypad Test a After pressing Internal, press each soft-button to verify that the appropriate program name gets underlined. This work-around just changes the order in which the three buttons are pressed. Reconnect the wire harness to the case.
You should now be able to re-initialize the unit as described above. Pressing various front panel buttons will cause the display to print characters, underscore characters, clear the screen, etc.
Remove the ensoniw supply board by pulling the front of the board toward the keyboard and then lifting it up so that the heat sink clears the case. Remove the ten screws that attach the keyboard to the case. Dnsoniq the metal shields from the unit.
Full text of “Ensoniq: Ensoniq SQ80 Service Manual”
Cut the wire ties that hold the wire harness to the chassis. Before replacing the power supply board, first make sure that the insulator pad mznual in place.
Be aware that these clips may fall off when disassembling a unit. For more detailed instructions see Appendix C. CLose the front panel. Disconnect the two cables from the disk drive, paying particular attention to polarity.
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Save any important data before re-initializing. Lid inserts Brass inserts were also added to the lid holes to prevent stripping of these holes. Before installing the new circuit board, make sure the cardboard insulator is in place.
Generally, the correct input level will fall in between the levels which yield the above messages. When you are swapping a main board, it is important to complete the replacement with an identical board. Place the unit upside down on a soft surface and remove the four screws that attach the wheel assembly to the case.
Press the board down into place. 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 Later, a brass insert was added to the main board ground boss and the ground wire from the main board was eliminated.
XX indicates the main operating system version, YYY indicates the keyboard operating system. It is pos- sible for the SQ80 to become confused if bad data is loaded into its memory.
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This ferrite bead should be added to any earlier unit that seems to have a problem with memory loss. When replacing the disk drive, it is important to transfer this metal plate to the new xq-80. Pailure to retain internal programs and sequences may require the addition of a ferrite bead see Appendix K. To reassemble, first make sure that the Insulator and all the buttons are in place.
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. Test the unit to make sure the keyboard is working properly. If certain buttons do not function properly during normal SQ80 operation, test them while the unit is in self-test mode.
Making note of the proper polarity, remove the keyboard ribbon cable from the old keyboard and install it on the new one.
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The foil shield ensonjq make contact with the bottom of the new line filter. The disk drive shield You will find that there is a metal plate located on the bottom of the disk drive see figure. You must remove this sheet before powering on the unit.
Short the Zower lead of R1 to the bottom left pin pin 28 of U See Appendix K for more details on how to install this ferrite bead. Be sure that the cable lies beneath the keayboard and is not pinched under the keyboard frame. Turn the unit upside down on a soft surface and replace the ten screws that secure the keyboard in the case. If the same buttons do func- tion properly in self-test mode, then the problem is most likely scrambled software the unit will need nanual be re-initialized as outlined in step 14 of the SQ80 test procedure.
Carefully slide the disk drive out of the wheel assembly. Note that there are lock washers on each screw and a ground wire leading from the line filter to the center screw remove this wire from the line filter end. If the unit now enters the self-test mode, this indicates a main board or keyboard problem. Note that these connectors are keyed and have connector locks. Reinstall the knobs on the data entry and volume sliders.
Reconnect the three wires to the filter, again noting the proper polarity.