Pioneer XC-LA21 User Manual

ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2000
c
XC-LA21
RRV2392
T – IZK OCT. 2000 Printed in Japan
STEREO CD TUNER
1. SAFETY INFORMATION
.......................................
2
2. EXPLODED VIEWS AND PARTS LIST
.................
4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
.....
8
4. PCB CONNECTION DIAGRAM
...........................
20
5. PCB PARTS LIST
................................................
30
6. ADJUSTMENT
.....................................................
33
CONTENTS
7. GENERAL INFORMATION
................................
37
7.1 DIAGNOSIS
..................................................
37
7.1.1 TROUBLE SHOOTING
........................
37
7.1.2 DISASSEMBLY/ASSEMBLY
................
41
7.2 PARTS
..........................................................
49
7.2.1 IC
..........................................................
49
7.2.2 DISPLAY
...............................................
51
7.3 REMOTE CONTROL UNIT
..........................
52
8. PANEL FACILITIES AND SPECIFICATIONS
....
54
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Component Model Service manual Remarks
COMPACT MINI COMPONENT X-LA21 RRV2370
STEREO CD TUNER XC-LA21 RRV2392 This manual.
STEREO POWER AMPLIFIER M-LA21 RRV2393
SPEAKER SYSTEM S-LA21 RRV2394
¶ System Component Table
LA21
3 COMPACT DISC MULTI CHANGER
STEREO CD TUNER
Type
Model
Power Requirement
The voltage can be converted by
XC-LA21 the following method.
DBDXCN AC110-127V/220-230/240V With the voltage selector
DDXCN/AR AC110-127V/220-230/240V With the voltage selector

Pioneer XC-LA21 Specifications

General

Brand	Pioneer
Model	XC-LA21
Category	Tuner
Language	English

Summary

Safety Information and Precautions

General Service Safety Warnings

Manual intended for qualified technicians; cautions against unqualified repairs affecting safety and reliability.

Class 1 Laser Product Safety

Apparatus contains Class 1 Laser. Servicing should only be done by specially instructed persons.

Diagrams and Schematics

Block Diagram Overview

Overall Wiring Diagram

Adjustment Procedures

CD Section Adjustment Steps

Procedure for adjusting the CD Assy after connecting connectors, following disassembly.

Required Jigs and Instruments

Lists necessary tools and equipment for performing adjustments, including test discs and oscilloscopes.

Adjustment Location Identification

Diagrams indicating specific adjustment points (VR pots) on the CD Assy board.

Focus Offset Calibration

Procedure for adjusting the Focus Offset (FEO) using VR4 on the CD Assy.

Tracking Offset Calibration

Procedure for adjusting the Tracking Offset (TEO) using VR3 on the CD Assy.

Tracking Balance Calibration

Procedure for adjusting the Tracking Balance (TEB) using VR2 on the CD Assy.

Focus Balance / Eye Pattern Calibration

Procedure for adjusting Focus Balance (FEB) and obtaining maximum eye pattern using VR1.

General Information and Procedures

Troubleshooting Flowcharts

Diagnostic flowcharts for identifying and resolving common issues like no sound or CD mechanism problems.

Disassembly and Assembly Guide

Step-by-step instructions for disassembling and reassembling the main body and CD mechanism.

Parts Identification and Specifications

Remote Control Unit Schematic

Remote Control Unit PCB Diagram

Front Panel Layout

Technical Specifications