Pioneer DEH-2850MP Service 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 2005
DEH-2800MP/XN/UC
CRT3554
HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER
DEH-2800MP
/XN/UC
DEH-2850MP
/XN/ES
This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-3164 CRT3583 S10.5COMP1 CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
For details, refer to "Important Check Points for Good Servicing".
K-ZZA. NOV. 2005 Printed in Japan

Pioneer DEH-2850MP Specifications

General

Power Output (Max)	50 W x 4
Power Output (RMS)	22 W x 4
Channels	4
Tuner	AM/FM
CD Playback	Yes
MP3 Playback	Yes
WMA Playback	Yes
WAV Playback	No
AAC Playback	No
USB Input	Yes
Aux Input	Yes
Bluetooth	No
Pre-out Voltage	2V
Display	LCD
Detachable Face	Yes
Subwoofer Output	Yes
Preset EQ	Yes

Summary

SAFETY INFORMATION

CAUTION

Important warnings for users and technicians about potential risks.

WARNING

Critical safety warnings regarding product content and hazards.

CD Section Precaution

Precautions for servicing the CD mechanism safely.

Important Check Points for Good Servicing

Product safety

Ensuring safety during product repair and maintenance.

Adjustments

Guidelines for performing product performance adjustments.

Lubricants, Glues, and Replacement parts

Guidelines for using specified service materials.

Cleaning

Procedures for cleaning specific internal parts.

Shipping mode and Shipping screws

Instructions for product transit protection.

SPECIFICATIONS

General

Basic specifications and physical dimensions of the unit.

Audio

Detailed audio performance specifications and frequency response.

CD player

Technical specifications for the CD playback functionality.

FM tuner

Technical specifications for the FM radio tuner.

AM tuner

Technical specifications for the AM radio tuner.

EXPLODED VIEWS AND PARTS LIST

PACKING(DEH-2800MP/XN/UC)

Exploded view and parts list for product packaging components.

PACKING(DEH-2850MP/XN/ES)

Exploded view and parts list for product packaging components.

EXTERIOR

CD MECHANISM MODULE

BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

BLOCK DIAGRAM

High-level functional overview of the system's main blocks.

OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

Diagram showing interconnections between major components.

KEYBOARD UNIT

ELECTRICAL PARTS LIST

ADJUSTMENT

CD ADJUSTMENT

Procedures for calibrating the CD mechanism and its components.

CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

Procedure to verify pickup unit alignment and grating angle.

ERROR MODE

SYSTEM MICROCOMPUTER TEST PROGRAM

Test program for system microcomputer diagnostics and output checks.

GENERAL INFORMATION

DIAGNOSIS

Information on diagnosing and troubleshooting system issues.

OPERATIONS

CONNECTION DIAGRAM