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Denon DP-51F Series - User Manual

Denon DP-51F Series
14 pages
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Denon DP-51F Series Specifications

General IconGeneral
Signal to Noise Ratio78dB (DIN-B)
Speeds33 1/3 and 45 rpm
PlatterDie-Cast Aluminum
Power RequirementsAC 120V, 60Hz
Cartridge Weight Range4 - 6 g

Summary

FEATURES

Microprocessor Controlled Servo Tonearm

Details the innovative microprocessor-controlled, contactless servo tonearm for safe and easy automatic operation.

Q-Damping Method Explained

Explains the electronic damping of low-frequency resonance for improved sound quality and stability.

Low Mass Straight Tonearm

Highlights the tonearm's design for maximizing high-compliance cartridge performance and tracing ability.

Automatic Speed and Size Selection

Describes the automatic detection of record size and selection of playback speed.

DENON Quartz Bi-directional Servo

Covers the DENON quartz lock and bi-directional servo for unmatched speed accuracy.

MAIN SPECIFICATIONS

BLOCK DIAGRAM

NAMES AND PARTS AND FUNCTIONS

Front Panel Controls Overview

Identifies and explains the functions of key buttons like Power, Speed, Start, Stop, and Lifter.

Adjustment Knobs Explained

Details the Stylus Force and Q-Damping adjustment knobs and their purpose.

EXPLANATION OF THE MICROPROCESSOR

Motor Control IC and Input Terminals

Details the Motor Control IC (IR3T02), OSC, and input terminal functions for speed and FG signals.

Output Terminals and Signal Waveforms

Explains output terminals like F/V, PD, and describes various signal waveforms and detection signals.

Arm Control IC IR3 T03 Functions

Details the Arm Control IC (IR3T03) and its functions for arm lifting, position detection, and automatic operations.

Automatic Operation Logic and Controls

Covers logic for arm return, lead-in, auto stop, anti-skating, and various control signals.

ADJUSTMENT METHOD

Phonomotor Section Adjustments

Guides for adjusting the head gap and lock mechanisms for 45/33 rpm speeds.

Arm Control Section Adjustments

Details on adjusting OP amp offsets for horizontal/vertical arm movement and stylus force.

Lead-in Position Calibration

Procedures for precisely adjusting the 30 cm and 17 cm record lead-in positions.

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