Schematics & manuals
Download high-resolution Wurlitzer electronic piano service manuals, wiring diagrams, and other technical documentation, including manuals for the Wurlitzer 112, 120, 700, and 200/200A series.
We may have more manuals and documentation available that we can digitize. To request something specific, or if you have a question about repairing a Wurlitzer using the manuals, contact us at the Wurly Hotline.
If you are primarily consulting the manual for the schematics, download the “schematics & diagrams only”. The OCR process used for the complete manual introduced a little bit of distortion, but the schematics & diagrams versions have no OCR and are true to the original document. See the notes below for details.
Wurlitzer 112 complete manual // Wurlitzer 112 schematics & diagrams only
Wurlitzer 700 complete manual // Wurlitzer 700 schematics & diagrams only
Wurlitzer 120 complete manual // Wurlitzer 120 schematics & diagrams only
Wurlitzer 200/200a complete manual // Wurlitzer 200/200a schematics & diagrams only
Need more documentation?
We are digitizing a collection of tens of thousands of Wurlitzer Co. engineering documentation at Tropical Fish Archive. If you are looking for something specific, let us know and we can check if we have it.
Wurlitzer schematics redrawn by Tropical Fish
We are currently in the process of redrawing Wurlitzer schematics for clarity. These schematics reproduce the original circuit, but change the layout so that the schematic is easier to read. We use the redrawn versions in the shop while rebuilding or servicing Wurlitzer amplifiers.
Wurlitzer 112 schematic (redrawn by Tropical Fish)
Check back soon as we add more Wurlitzer models, or subscribe to our newsletter and be the first to know about newly-available schematics.
wHICH SERVICE MANUAL SHOULD i DOWNLOAD?
IF YOU HAVE A WURLITZER 112 →
The Wurlitzer 112 service manual, as the name suggests, is for the Wurlitzer 112. Because the 112 has a piano-style mechanical action, Wurlitzer also references the acoustic piano service manual. We are currently digitizing it and it should be available shortly. If you’re interested, contact us and we will let you know when it is available.
if you have a WURLITZER 120 →
Wurlitzer seems to have considered the 120 an update to the 112, and there are a lot of similarities between the two models. The 120 action is slightly more responsive and easier to work on, and it is lighter and more portable. Wurlitzer also simplified the amplifier, which has its pros and cons. On the upside, the 120 amplifier is smaller, lighter, and easier to service—but it lost a couple of gain stages and can’t easily be modified for an effects loop like the 112 can.
Either way, if you have a 120, you will probably benefit from reading both the 120 and the 112 service manuals (and the acoustic piano manual too, if you’re feeling ambitious).
if you have a WURLITZER 700 →
The Wurlitzer 700 is the console version of the Wurlitzer 120. It has the same amplifier and mechanical action, but everything is housed in a wooden cabinet that makes the 700 resemble a small spinet piano. The 700 service manual has amplifier schematics and some information on regulating the action, but it mostly describes 700-specific procedures like how to remove the rear cabinet. If you have a 700, you will want to read the 120 service manual as well, and that may lead you to read the 112 service manual and the acoustic piano service manual.
if you have a 200-SERIES WURLITZER ELECTRONIC PIANO →
200-series Wurlitzers include the 200 and 200A, as well as their console versions (203, 203W, 214, etc.), educational versions (206, 206A, 207, etc), and special versions like the 270. All information pertaining to these models can be found in the 200-series service manual. This includes all of the schematic wiring for the educational circuitry, such as the communications system between student and teacher pianos.
More documentation about 200-series Wurlitzer electronic pianos is available on Tropical Fish Archive. A few highlights:
Engineering drawings for many 200-series parts, such as the sustain pedal
A diagram of the Wurlitzer 270 sustain pedal
Drawings related to the V500 Key / Note Visualizer
Drawings related to the Wurlitzer 101 Music Learning Module, a gadget that is like if the Wurlitzer 206 and a combo organ had a baby
Wurlitzer Technical Notes, a newsletter published by Wurlitzer—see July 20, 1973, which has a paragraph on a resistor change for the Wurlitzer 200
NOT SURE WHICH ELECTRONIC PIANO YOU HAVE?
Send us some photos and we will let you know how to determine the model of your keyboard.
Why read the service manual?
The service manual is a must-read for anyone with a Wurlitzer electronic piano. Even if you don’t plan on servicing your Wurly yourself, it reveals a lot about the keyboard and how it was originally intended to be used.
Wurlitzer electronic pianos were inspired by acoustic pianos, and they have a simplified acoustic piano action. In an acoustic piano, the adhesives used to attach felt to wood are reversible. That way, if and when the felt wears out, it can be replaced.
This contrasts with a lot of other keyboards (such as the Optigan), which are so difficult to take apart for maintenance that the manufacturer did not seem to have foreseen their continued use. Earlier Wurlitzers have a little bit of that ambivalence; for instance, it is difficult to access the mechanical parts of a Wurlitzer 112 for service. Contrast with the 200A, which provides access to the entire mechanical action once the is removed. It is clear that, as the product evolved, serviceability became an explicit design goal. This is the reason why it is possible to restore late-model Wurlitzer to its original playability even today.
How we digitized the manuals
We digitized the Wurlitzer 112, 120, 700, and 200/200A service manuals around 2019. We manually scanned each page with a mirrorless camera at high resolution. Then, we digitally restored lines and characters that were not printed legibly in the original document.
We produced two versions of each manual. The first version is the full text. The second version contains just the schematics and diagrams. The full text versions have a lot of good information about the process of servicing Wurlitzer keyboards. However, the schematic & diagram versions are much smaller in size, and more convenient if you just need a quick reference.
The OCR process that we used in 2019 sometimes distorts images. This is not the process that we use today. If we were to re-digitize these files, we would use a different process that preserves more of the detail of the original capture and uses OCR that does not affect the file. This is the process that we use at Tropical Fish Archive to digitize documents such as the Wurlitzer 4100 Service Manual.
If you need to see the original schematic images without distortion, use the “schematics and diagrams only” version. These do not have OCR applied and are true to the original document.