Pioneer PD-5050 User Manual

© <riw the sereicing these models, please refer to the following service ruiarsisai.
o PD-7050/KU, KC, HEM, HB, SD types and PD-7050-S/HEM type; ARP1331
o PD-6050/KU, KC, HEM, HB, SD, SD/G types and PD-6050-S/HEM type; ARP1329
o PD-5050/HEM, HBtypesand PD-5050-S/HEM type;ARP1330
e PD-40S0/KU, KC, HEM, HB, HP, SD, SD/G types and PD-405G-S/HEM, HB types; ARP1332
CONTENTS
1. IC DATA 2
2. OPTICAL PATH IN THE PICK-UP 8
3. BLOCK DIAGRAM 11
4. CIRCUIT DESCRIPTIONS . 13
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1 -Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive, Markham, Ontario L3R 6B8 Canada TEL: [416] 479-4411
PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 Beveren, Belgium TEL: 03/775 -28-08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911
MT ©MAR. 1987 Printed in Japan

Pioneer PD-5050 Specifications

General

Brand	Pioneer
Model	PD-5050
Category	CD Player
Language	English

Summary

IC Data

1.1 PD3091A

Details the pin configuration and functions for the PD3091A IC used in specific models.

1.2 PD3092A

Explains the pinout and operations of the PD3092A IC for various compatible models.

1.3 PD3093A

Provides pin details and functions for the PD3093A IC, specific to PD-4050 models.

Optical Path in the Pick-Up

2-1 OPTICAL PATH AND OPTICAL PARTS

Describes the laser light path and identifies key optical components in the pick-up assembly.

2-2 FEATURE OF EACH PART

Highlights the specific characteristics and improvements of individual optical parts.

Block Diagram

Circuit Descriptions

4.1 ACCURATE FOCUS SERVO SYSTEM

Explains the Accurate Focus System, detailing its role in reducing RF signal distortion and improving performance.

4.2 IC DESCRIPTIONS

Details the integrated circuits used in the player, including their specifications and functions.

4.2.1 CXA1082AS

Provides a detailed description of the CXA1082AS IC and its application in the Focus Servo System.

4.2.2 CXA1081S

Details the CXA1081S IC, focusing on its RF amplifier and related circuitry.

TRACKING AND CARRIAGE SERVO SYSTEM

Describes the servo system responsible for tracking disc rotation and carriage movement.

SPINDLE SERVO, LPF

Explains the Spindle Servo and Low-Pass Filter (LPF) circuits and their functions.

VCO LOOP FILTER, 8.64MHz VCO

Describes the Voltage Controlled Oscillator (VCO) Loop Filter and its 8.64MHz operation.

4.3 TOC READING

Outlines the process and initial settings for reading the Table of Contents (TOC) from the disc.