Sony CDP-CX225 User Manual

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MICROFILM
CDP-CX225
US Model
Canadian Model
SERVICE MANUAL
COMPACT DISC PLAYER
• CDP-CX225 is similar to the earlier CDP-CX200 model.
• Refer to CDP-CX200 service manual (9-960-723-XX) for information not contained
in this service manual.

Sony CDP-CX225 Specifications

General

Brand	Sony
Model	CDP-CX225
Category	CD Player
Language	English

Summary

Service Manual Overview

Technical Specifications

Section 1 Servicing Notes

Safety Check-out Procedures

Procedures to ensure safe operation after service, focusing on AC leakage.

Handling Optical Pickup and Flexible Boards

Guidelines for safely handling the optical pickup block and flexible boards.

Laser Diode Emission Check Notes

Precautions for checking laser diode emission to avoid exposure.

Laser Diode and Focus Search Operation Check

Procedure for verifying laser diode and focus search operation using S-curve output.

Section 2 General Information

Location of Parts and Controls

Identifies and describes the location of all front panel controls and features.

Playing CDs

Section 3 Disassembly Procedures

3-1. Front Panel Assembly Disassembly

3-2. Back Panel Assembly Disassembly

3-4. Mechanism Deck Assembly

Section 4 Test Mode

4-1. Display Check Mode

4-2. ADJ Mode Operations

4-3. Key and Display Check Mode

Aging Mode Test Procedure

Instructions for activating and performing the automatic aging mode for unit testing.

Section 5 Adjustments

5-1. Mechanical Adjustment Prerequisites

Sensor Alignment Procedure

Guide (Disc T) Alignment

Holder (Disc A) Alignment

Pulley and Disc Center Hole Alignment

Magnet Assembly Alignment

5-2. Electrical Block Checking

RF PLL Free-run Frequency Check

Section 6 Diagrams

6-1. Circuit Boards Location

6-2. IC Pin Functions

6-3. Block Diagram

6-4. Printed Wiring Board - BD, DISP Section

Schematic Diagram - BD, DISP Section

6-8. IC Block Diagrams - BD, DISP Section

Section 7 Exploded Views

7-1. Case and Back Panel Section

7-3. Front Panel Section

7-4. Mechanism Section-1 (CDM-40)

7-5. Mechanism Section-2 (CDM-40)

Section 8 Electrical Parts List