Wurlitzer 200A User Manual

Detailed specifications for the portable Model 200 and 200A.

Specifications for models 203, 203W, 206, 205V, 207, 214, 215V, and 270.

Specific steps for preparing portable models 200 and 200A for service.

Specific steps for preparing console models 203, 203W, and 214 for service.

Specific steps for preparing the student console Model 206 for service.

Specific steps for preparing the teacher's console Model 207 for service.

Inspect action centers for sluggishness and treat them with solution.

Inspect action parts, set key height, square, level, and space keys.

Adjust striking point, blow distance, and lost motion for correct hammer action.

Adjust let-off distance and key dip for proper hammer escape and back check.

Adjust damper sustain, level, regulation, and pedal for correct operation.

Adjust pickup position relative to reed for tone characteristics and volume.

Details on connecting student pianos and operating the teacher's console.

Procedure for replacing power transistors, including heat sink preparation.

Troubleshooting steps for a piano with no sound output.

Troubleshooting steps for audio output with distortion.

Troubleshooting steps for excessive hiss in the amplifier output.

Troubleshooting steps for radio or TV interference affecting the audio.

Troubleshooting steps for hum or buzz in the audio signal.

Troubleshooting hum when normal grounding procedures do not resolve it.

Provides a description of the electronic piano amplifier circuit.

Schematic reference for Model 200A amplifier P.C. board (late).

Schematic reference for Model 200A amplifier (late production).

Schematic reference for Model 200A amplifier P.C. board (early).

Schematic reference for the Model 207 communications system.

Description of the output amplifier stage and its components.

Description of bias, driver, and output stages of the amplifier.

Guide matching amplifier symptoms to potential causes and checks.