Pioneer DEH-P840MP User Manual

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
C PIONEER CORPORATION 2002
K-ZZY. FEB. 2002 Printed in Japan
- This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-3007 CRT2820 S9MP3 CD Mech. Module:Circuit Description, Mech.Description, Disassembly
For details, refer to "Important symbols for good services".
ORDER NO.
CRT2845
Service
Manual
DEH-P840MP/XN/UC
MULTI-CD CONTROL HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER
DEH-P840MP XN/UC
DEH-P8400MP XN/UC
DEH-P8450MP XN/ES
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST.......................4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...18
4. PCB CONNECTION DIAGRAM ................................38
5. ELECTRICAL PARTS LIST ........................................48
6. ADJUSTMENT..........................................................55
7. GENERAL INFORMATION .......................................65
7.1 DIAGNOSIS ........................................................65
7.1.1 DISASSEMBLY .........................................65
7.1.2 CONNECTOR FUNCTION DESCRIPTION.......74
7.2 PARTS .................................................................75
7.2.1 IC................................................................75
7.2.2 DISPLAY....................................................92
7.3 OPERATIONAL FLOW CHART...........................93
7.4 CLEANING ..........................................................93
8. OPERATIONS AND SPECIFICATIONS.....................94

Pioneer DEH-P840MP Specifications

General

Peak Power Output	50W x 4
CD Playback	Yes
MP3 Playback	Yes
WMA Playback	Yes
USB Input	No
DIN Size	Single DIN
Detachable Face	Yes
Preamp Voltage	4V
Preamp Outputs	3 (Front, Rear, Subwoofer)
Sub Preamp Output	Yes
HD Radio	No
Display Color	Multi-Color
Button Color	Blue
Remote Control	Yes
CD Text	Yes
Subwoofer Output	Yes
Preamp Output Voltage	4V
High-Pass Filter	Yes
Low-Pass Filter	Yes
Time Alignment	Yes
Power Output	50W x 4
Tuner	FM/AM
Aux Input	Yes
Bluetooth	No
Satellite Radio	No

Summary

SAFETY INFORMATION

EXPLODED VIEWS AND PARTS LIST

2.6 CD MECHANISM MODULE

Detailed diagram of the CD mechanism module's components.

BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

Overall block diagram showing major functional units and interconnections.

3.5 CD MECHANISM MODULE(GUIDE PAGE)

Guide page for understanding the CD mechanism module schematic.

Waveforms

PCB CONNECTION DIAGRAM

4.1 TUNER AMP UNIT

D CD CORE UNIT (S9MP3) SIDE A

PCB layout for the CD Core Unit (S9MP3), Side A.

D CD CORE UNIT (S9MP3) SIDE B

E SWITCH PCB SIDE A

E SWITCH PCB SIDE B

F CONNECTOR PCB SIDE A

F CONNECTOR PCB SIDE B

ELECTRICAL PARTS LIST

ADJUSTMENT

6.1 JIG CONNECTION DIAGRAM

Diagram illustrating jig connections for adjustment procedures.

6.2 OEL UNIT ADJUSTMENT

Procedure for adjusting the OEL Unit's resistance.

6.3 CD ADJUSTMENT

Precautions and procedures for adjusting the CD mechanism module.

Flow Chart

Flow chart detailing test mode operations and adjustments for the CD mechanism.

6.4 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

Procedure to check and verify the pickup unit's grating angle.

6.5 CD TEST MODE

Information on error codes and operational status during CD test mode.

GENERAL INFORMATION

7.1 DIAGNOSIS

Procedures for diagnosing issues and understanding the unit's internal structure.

7.1.1 DISASSEMBLY

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

7.3 OPERATIONAL FLOW CHART