Philips D8714 Service Manual

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Philips D8714 Specifications

General

Model	D8714
Power Source	9V battery
Type	Digital Multimeter
Display	LCD
Measurement Functions	Voltage, Current, Resistance

Summary

CONNECTIONS AND CONTROLS

SPECIFICATIONS

Changing the voltage

Details how to adapt the unit for different mains voltages and update the type plate accordingly.

DISASSEMBLY PROCEDURES

Cabinet and PCB Removal

Steps to remove the cabinet, battery lid, back cover, and various printed circuit boards.

Cassette Lid Holder and Handle Removal

Instructions for removing the cassette lid holder and the main unit handle.

Tape Deck Component Removal

Steps for removing tape deck parts like pressure roller, head support bracket, and switches.

ADJUSTMENTS AND CHECKS

Head Height Adjustment

Procedure to adjust the recording/playback head height using a jig and check tape path.

ELECTRICAL MEASUREMENTS AND ADJUSTMENTS

Explains electrical tests, voltage measurements, and adjustments for proper performance.

MEASUREMENT AND ADJUSTMENT PARAMETERS

Playback Speed and Azimuth Adjustment

Specifies the method and target value for measuring playback speed and azimuth.

Playback Sensitivity and Indicators

Covers playback sensitivity tests and how to check various indicator signals.

BIAS and Recording Sensitivity Tests

Details procedures for setting and measuring bias and recording sensitivity levels.

Pilot-tone Suppression and ALC Tests

Explains how to measure pilot-tone suppression and test A.L.C. LED bar indicators.