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View and Download ENSONIQ DP/4 musician’s manual online. DP/4 Music Pedal pdf manual download. Hello,. Welcome to , Inc. your online resource for technical documents and service information. This PDF package may contain information, . I bought a DP/4 but need a manual. There’s a Yahoo DP4 Group (dp4: Ensoniq DP4) with all the Manuals and more for DP4/+ as pdfs.

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Search the history of over billion web pages on the Internet. Full text of ” Ensoniq: Com Technical Document Distribution Brand: Parallel Effects Processor Description: This PDF package may contain information, schematics, parts lists, images, engineering changes, previous versions, circuit descriptions, and many other unique features about the product you have chosen.

This document was assembled from a variety of sources and is the result of our many years in the music repair business. Large original over-sized drawings will need to be taped together. We feel this is better than reducing them and losing the fine details. This will let you navigate to any page without waiting for the entire file to download. Just click ON the thumbnails. Also please stay online while printing this document to make sure you get all the pages.

Visit us on the web at: Rather than diagnose and exchange individual components, you will replace complete modules. We feel that this is the most time and cost effective method of repair, both for you and your customers. If you don’t read any other part of this manual, read this section. If the memory does get scrambled, it will be necessary to reinitialize the system.

Scrambled software can cause problems that at first glance appear to be hardware-related, reinitialization is recommended as a first step in troubleshooting.

However, the 80 ROM presets are automatically loaded back into the internal memory after reinitializing. It is highly recommended that the internal memory be saved by the customer before servicing. Unplug all audio cables before nesoniq. ROM presets are automatically placed in the internal memory after reinitialization. If the system dnsoniq so scrambled that the front panel isn’t working, try the following reset sequence: If it doesn’t then there is another problem.

If the unit is open, you can try the following Hard Reset: If the above methods do not return the system to normal operation then there is a problem in one of the modules. Avoid over- tightening screws when executing any repair procedure!

Various parts are held in place by screws that tighten into aluminum mounting rails that are part dp the case. When replacing any of these screws, it is possible to over-tighten the screws and strip out a hole. Mono shielded audio cables are manyal that have one or more wires connected to the tip of the plug that carries audio signal information, surrounded by a braided wire connected to the sleeve of the plug ground that acts as a shield against interference.


If for some reason three conductor tip, ring, sleeve cables are used, noise will be introduced into the system. TRS cables also should have braided wire surrounding the other three wires to shield against interference.

These cables may be present in studios that own some equipment with balanced inputs and outputs. Figure 2 – What Plugs to Use 4. We just wanted to let you know that we are using a high retention force connector on the transformer.

This means it manuzl be very difficult to remove this cormector by just pulling. We recommend the use of a scribe, screwdriver or similar object when discormecting cables. Watch out for them, and please don’t pull on the wires! We have found that some units develop further problems once a module has been changed.

Documents, presets, manuals Ensoniq DP4+ – Audiofanzine

This may be a result of improper handling of cables, especially the pin and pin ribbon cables between the keypad board and the main board. We suggest removing all cable coimectors using the angled end of a scribe see below.

Scribe These can be found in the following catalogs: You should check this before troubleshooting the rest of the unit. Check all the fuses to make sure they are not blown. After it has warmed up for five minutes, manjal to test the voltages. There is a different transformer for each line voltage the line voltage is listed on the top of the transformer: Replace the defective part with the same type.

Therefore, all the power supply voltages are measured at test points on the main board.

Full text of “Ensoniq: ensoniq dp4 service manual “

The following chart lists the voltage ranges for proper operation of each supply fully loaded and the appropriate points to read across with the voltmeter Designation Terminals Allowable range Units transformer and transformer secondary board, J1 coimector see Figure 3 Analog Supply 4 6 In Self-test mode, the display remains blank until you press the buttons on the front panel. These messages are diagnostics and do not necessarily indicate a problem.

They were designed to help our software engineers in the development of the software, not as hardware diagnostics.

It is possible that chronic unexpected event messages could result from scrambled memory. Be sure to msnual the system see p. The following unexpected event messages could be caused by a problem on the main board: This was fixed in O. Sometimes the unit in question can wake mabual in a state of mild confusion and this message might appear.


The battery level is only checked when the unit is turned on. A Low Battery Message does not necessarily ensoiq that you have a low battery! Follow the flow chart below! Connect Output 1 to Input 1 b.

Connect Output 2 to Input 2 c. Connect Output 3 to Input 3 d. Connect Output 4 to Input 4 2. While holding down System, press D. The display shows “Alert! The display shows “Select Test: The display shows” Alert! Connect the scope probe to ground. On main board J 15 the pin connectoryou should see: To see channel 2, press B.

On the pin connector, you should see: To see chaimel 3, press C. To see chaimel 4, press D. MIDI malfunctions, audio quality, footswitch or pedal problems, and memory problems. To perform the following tests you will need: Sometimes these units merely require reinitialization see p.

Be sure to save the customer’s presets before reinitializing see p. The LCD display momentarily shows: Both displays go blank and all LEDs turn off. While holding down Config, press A. Analog Page a While holding down System, press C.

The LCD display shows: The LCD display temporarily shows: Here is how to run the test and what it manuql While holding down System, press B.

Press the Right arrow button. Set Channel Volume Pots a.

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Set all four of the Input Channel Volume pots to a 3 o’clock position. Turn all four of the Output Channel Volume pots all the way up 5 o’clock position.

Start bum-in code a. While holding down System, press Config. See Test Result Pages on the following page. If this test still fails, then it indicates a Main Board problem. Check that the front panel input knobs esnoniq at 3 o’clock and that the output knobs are at 5 o’clock. If this test still fails, follow the flowchart in Figure 9.

The test result page will be displayed after the current test is completed. The LCD display shows the error counts: To Stop the Bum-in Test: This change affects the documentation in that the parameter limits are now actually 1msec to lOsec instead of 50 isec to lOsec.