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Moog Guitar Service Manual
Moog Guitar Service Manual

Moog Guitar Service Manual

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Moog Guitar Service Manual
Introduction:
This document introduces the Moog Guitar from a service perspective. This instrument is the first commercially
available guitar to incorporate a true, closed-loop vibration-control system. The guitar's behavioral module uses all
analog circuitry of a very complex, miniaturized and delicate nature.
In designing the Moog Guitar, we made every effort to meld the electronics and the instrument into a unified whole.
The electronics and the physical instrument must work together properly if the resulting instrument is to be good
enough to allow the guitarist to develop and display true virtuosity.
This service manual will help you restore a Moog Guitar to good playability.
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To service the MG, you should be familiar with basic guitar and instrument service procedures such as truss rod
adjustment, intonation, dressing frets, etc. These guitar-related service procedures all apply to the MG, but this
manual will point out a few special points to watch out for.
The electronics in the MG should not be serviced in the field. Electronic service is by PCB replacement. At this time,
we are not releasing a guide for adjusting the PCB trims. It is relatively easy to replace the PCB, there are only a
few solder connections. However, you must carefully note the color codes and ordering of the wires and re-solder
each to its proper location.
You must also be prepared to cleanly de-solder and solder a few connections and possibly make some adjustments
using a Digital Volt Meter (DVM) and fine-tip probes.

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Summary of Contents for Moog Guitar

  • Page 1 In designing the Moog Guitar, we made every effort to meld the electronics and the instrument into a unified whole. The electronics and the physical instrument must work together properly if the resulting instrument is to be good enough to allow the guitarist to develop and display true virtuosity.
  • Page 2 PCB can do a whole lot of damage for example. Please take care not to leave any small conductive “bits” in the guitar - sections of guitar string, bits of wire, etc. Anything like that could short out components on the PCB.
  • Page 3 In general, a saddle’s height adjustment set screws should not be over-extended, i.e., the saddle body should sit fairly low to the bridge platform. This advice applies to all installations of GraphTech Ghost saddles, not just the ones on the Moog Guitar. Pickups: If the pickup height has been tampered with it may be necessary to readjust the pickups.
  • Page 4 Place pots through correct panel hole so that washer allows just enough bushing thread for one nut and washer on the outside of the guitar. If too many threads are left, a thicker lock washer should have been used. This will be obvious once knobs are installed and the nuts are visible underneath.
  • Page 5 Example Install the two blade switches with their circuit boards facing the outer rim of the guitar. Please be sure the three position and five position switches are in the correct location (see Fig C). Install 4 machine screws for switches. Please be extra cautious to not over tighten these screws.
  • Page 6 Make sure 1/4" jack's nut is secure. Wire ¼” jack according to Fig D. Please be careful of solder splatter around guitar finish. Solder yellow and red ground wires to proper locations on breakout boards (see Fig B, and C). Please be careful of solder splatter around guitar.
  • Page 7 Moog Guitar Service Manual Example Install Pick ups: If not present, place foam cutout into each pickup cavity. be sure that three holes in foam match the three screw holes in pick up cavity. Place a pickup in each cavity with its wires passing through the holes joining to the board cavity.
  • Page 8 Moog Guitar Service Manual Example Dress wires from breakout boards so they don’t interfere with board installation. Be especially cautious that wires aren't sandwiched and severed by board. This will often occur around the switches and pots. Install Circuit board: *make sure to use proper static protection when handling board.
  • Page 9 Moog Guitar Service Manual Example Connect 9V battery terminal. Due to alignment tabs on connector, this terminal should only install in the correct orientation. delicately press board into friction fit cavity. Start at piezo end of board and work the rest of the board into the cavity around foam pieces. Shims may be necessary to allow foam to hold the final portions of the board.
  • Page 10 Insulate bridges and install saddles: remove strings and bridge from guitar, if bridge has not been insulated. Be sure that hex nuts are as loose as possible before removing springs. Take caution to protect your eyes! If not already installed, place six saddles on bridge in following order;...
  • Page 11 Moog Guitar Service Manual Example Neatly lay all wires to the side of the bridge opposite the tremolo bar insert. Securely tape the wires into this position. If wires are all the same starting length, which they should be, the wire length after...
  • Page 12 Figure B...
  • Page 13 Figure C...
  • Page 14 Figure D...
  • Page 15 Moog Guitar Set Up Specs and Procedure: Check Piezos: Tune guitar. It is best for the bridge settling to tune strings in following order: G, high E, low E, B, A, retune G, D. Don’t be alarmed if bridge adjusts itself during tuning.
  • Page 16 Intonation: The Moog Guitar’s intonation procedure should be the same as that of other guitars. The only variation may occur in the amount each saddle needs to be adjusted in order to accurately intonate certain strings (often noticed on lower strings).