Pioneer DEH-2020R User Manual

PIONEER ELECTRONIC 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 ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1998
K-ZZD. DEC. 1998 Printed in Japan
ORDER NO.
CRT2312
HIGH POWER CD PLAYER WITH RDS TUNER
DEH-2000R X1N/EW
Service
Manual
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST.......................3
3. SCHEMATIC DIAGRAM ...........................................14
4. PCB CONNECTION DIAGRAM ................................38
5. ELECTRICAL PARTS LIST ........................................48
6. ADJUSTMENT..........................................................56
7. GENERAL INFORMATION .......................................60
7.1 PARTS .................................................................60
7.1.1 IC................................................................60
7.1.2 DISPLAY....................................................67
7.2 DIAGNOSIS ........................................................68
7.2.1 DISASSEMBLY .........................................68
7.2.2 TEST MODE..............................................69
7.3 BLOCK DIAGRAM ..............................................73
8. OPERATIONS AND SPECIFICATIONS.....................75
- See the separate manual CX-916(CRT2300) for the CD mechanism description, disassembly and circuit
description.
- The CD mechanism employed in this model is one of S8 series.
DEH-2030R X1N/EW
DEH-2020R X1N/GR
DEH-2000R/X1N/EW

Pioneer DEH-2020R Specifications

General

Tuner	Yes
FM Tuner	Yes
AM Tuner	Yes
CD Playback	Yes
CD Player	Yes
Cassette Player	No
USB Port	No
Bluetooth	No
Aux Input	No
Built-in Display	Yes
MP3 Playback	No
WMA Playback	No
Equalizer	Yes
High-Pass Filter	No
Low-Pass Filter	No
Channels	4
Maximum output power	50W x 4
DIN Size	1 DIN

Summary

Service Manual Overview

Supported Models

Lists the Pioneer car audio models covered by this service manual.

SAFETY INFORMATION

General Safety Precautions

Essential safety guidelines for servicing, including CD player and laser diode precautions.

EXPLODED VIEWS AND PARTS LISTS

Packing Section Parts List

Details components included in the product's packaging for various models.

Exterior Section Parts List

Lists all parts associated with the exterior assembly of the unit.

CD Mechanism Parts List

Provides a comprehensive list of parts for the CD mechanism module.

SCHEMATIC DIAGRAMS

Overall Connection Diagram

Illustrates the overall electrical connections and signal flow of the unit.

FM/AM Tuner Unit Schematic

Detailed schematic for the FM/AM tuner unit, covering front end and IF stages.

Keyboard Unit Schematic

Schematic diagram for the keyboard unit, detailing button and LCD connections.

CD Mechanism Module Schematic

Schematic diagram for the CD mechanism module, covering its control and photo units.

Waveforms for Troubleshooting

PCB CONNECTION DIAGRAMS

Tuner Amp Unit PCB Layout

Shows component placement and routing on the Tuner Amp Unit PCB.

FM/AM Tuner Unit PCB Layout

Component placement and routing on the FM/AM Tuner Unit PCB.

Keyboard Unit PCB Layout

Component placement and routing on the Keyboard Unit PCB.

CD Mechanism Module PCB Layout

Component placement and routing on the CD Mechanism Module PCB.

ELECTRICAL PARTS LIST

Component Parts Lists

Comprehensive lists of all electrical components including resistors, capacitors, and miscellaneous parts.

ADJUSTMENT PROCEDURES

CD Adjustment Precautions and Test Mode

Safety precautions and test mode procedures for CD mechanism adjustments.

Grating Angle Adjustment

Procedure to check and adjust the grating angle after pickup unit replacement.

GENERAL INFORMATION

IC Pin Functions

Detailed pin assignments and functions for various integrated circuits used in the unit.

Display Pinout

Pinout diagram for the display unit (CAW1499).

DIAGNOSIS AND TROUBLESHOOTING

Disassembly Instructions

Step-by-step instructions for safely disassembling the unit's main components.

Test Mode Error Codes

List of error codes displayed in test mode, with descriptions and potential causes.

BLOCK DIAGRAMS

OPERATIONS AND SPECIFICATIONS

Basic Operations

Guide to basic user operations, including source selection, volume, and tuner functions.

Audio Adjustments

Instructions for adjusting equalizer curves, fader, balance, and loudness settings.

Wiring Diagram

TECHNICAL SPECIFICATIONS

General and Tuner Specifications

Detailed technical specifications for the unit's general features and tuner performance.