Philips C.D.M.-1 - User Manual

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Philips C.D.M.-1 Specifications

General

Brand	Philips
Model	C.D.M.-1
Category	CD Player
Language	English

Summary

Servicing Hints

RAFOC Unit Servicing

Procedure for replacing the RAFOC unit, covering disassembly and reassembly of the radial and focusing mechanism.

Chip Component Handling

Instructions for safely dismounting and mounting surface-mount components on PCBs, with diagrams.

Servicing Precautions

Essential safety advice for servicing, including static discharge prevention and component handling.

Mechanical Measurements and Adjustments

Turntable Height Adjustment

Steps to adjust turntable height using a bearing screw and DC voltmeter for correct playback.

Angle Setting Checks and Adjustments

Methods for checking and adjusting the disc-to-light path angle, ensuring proper arm movement and reflection alignment.

Electrical Measurements and Adjustments

Laser Power Supply Checks

Procedures for verifying laser power supply voltages and controls using a simulator and voltmeter.

Motor Control (Hall) Verification

Checking motor control signals via oscilloscope for symmetry, phase shift, and amplitude ratios.