Pioneer DEH-2090MP - User Manual

ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) 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 2007
DEH-2050MPA/XN/EC
CRT4045
CD RECEIVER
DEH-2050MPA /XN/EC
DEH-2050MPG /XN/EC
DEH-2090MP /XN/ID
This service manual should be used together with the following manual(s):
Model No. Order No. Mech.Module Remarks
CX-3195 CRT3815 S10.5COMP2 CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
For details, refer to "Important Check Points for Good Servicing".
K-ZZU. OCT. 2007 Printed in Japan

Summary

SAFETY INFORMATION

Service Precautions

Guidelines for qualified technicians regarding safety and product integrity.

Safety Cautions and Warnings

Important safety notices for handling batteries and preventing explosions.

IMPORTANT CHECK POINTS FOR GOOD SERVICING

Product Safety

Adherence to regulations, safe environment, and proper repair practices.

1. SERVICE PRECAUTIONS

1.1 Service Precautions

General safety guidelines for servicing, including power handling and ESD protection.

1.2 Notes on Soldering

3. BASIC ITEMS FOR SERVICE

3.1 Check Points After Servicing

4. BLOCK DIAGRAM

4.1 Block Diagram

5. DIAGNOSIS

5.1 Operational Flow Chart

Illustrates the power-on sequence and basic operational logic.

5.2 ERROR CODE LIST

Error Messages and Codes

Lists error codes displayed for CD malfunctions and their causes.

6. SERVICE MODE

6.1 CD Test Mode

Explains how to enter and use the CD test mode for adjustments.

6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

Grating Check Procedure

7. DISASSEMBLY

Removing the Case

Steps to remove the outer case of the unit.

Removing the CD Mechanism Module

Instructions for detaching the CD mechanism module.

Removing the Grille Assy

Removing the Tuner Amp Unit

Instructions for removing the tuner amplifier unit.

8. EACH SETTING AND ADJUSTMENT

8.1 PCL Output Confirmation

9.3 CD MECHANISM MODULE

CD Mechanism Module Parts List

10. SCHEMATIC DIAGRAM

10.1 Overall Connection Diagram

Shows the overall system connectivity between major units.

10.2 KEYBOARD UNIT

Keyboard Unit Schematic

10.3 CD MECHANISM MODULE

CD Mechanism Module Schematic

10.4 WAVEFORMS

CD Core Unit Waveforms

12. ELECTRICAL PARTS LIST

Electrical Parts List

Pioneer DEH-2090MP Specifications

General

Model	DEH-2090MP
DIN Size	1 DIN
Channels	4
Tuner	AM/FM
CD Player	Yes
CD-R/RW Compatible	Yes
MP3 Playback	Yes
WMA Playback	Yes
USB Input	Yes
Auxiliary Input	Yes
Bluetooth	No
Display Type	LCD
Detachable Faceplate	Yes
Remote Control	Yes
Max Power Output	50 W
RMS Power Output	22W x 4
EQ Bands	3-band