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Pioneer CT-F7171 Service Manual

Pioneer CT-F7171
59 pages
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Pioneer CT-F7171 Specifications

General IconGeneral
Track System4-track, 2-channel stereo
Tape Speed4.75 cm/s
Heads1 x record/playback, 1 x erase
MotorDC servo
Tape TypeNormal, CrO2
Wow and Flutter0.07% (WRMS)
Frequency Response20Hz to 20kHz (Metal tape)

Summary

Specifications

Circuit Description

Recording and Playback Circuit

Explains the common circuitry for recording and playback, including tape selectors and equalizer.

Limiter Circuit

Describes the circuit that compresses excessive signals above +4VU to below +4VU.

Peak Level Indicator

Explains the circuit that detects signal levels exceeding +4VU and activates an LED.

Dolby Processor

Details the Dolby B-type noise reduction system and its operation in recording and playback.

Auto Stop Circuit

Explains how the auto stop circuit releases tape transport levers when the tape ends.

Power Supply

Describes the DC motor power supply and amplifier power supply circuit with voltage stabilizer.

Troubleshooting Chart

Mechanical Adjustments

Pinch Roller Pressure

Details the procedure to adjust pinch roller pressure using a tension gauge.

Take-Up Torque

Explains how to check and adjust take-up torque in playback, fast forward, and rewind modes.

Electrical Adjustments

Head Azimuth Adjustment

Details how to adjust head azimuth for optimal signal on left/right channels.

Playback Equalizer Adjustment

Explains the procedure to adjust playback equalizer for normal and chrome tapes.

Recording Current (Level) Adjustment

Details the procedure for adjusting recording current after stopping bias current.

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