Pioneer KEH-1950 - User Manual

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 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 CORPORATION 1999
K-ZZY. NOV. 1999 Printed in Japan
ORDER NO.
CRT2424
HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-1900 X1M/UC
Service
Manual
CONTENTS
1. SAFETY INFORMATION............................................2
2. EXPLODED VIEWS AND PARTS LIST ......................2
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....8
4. PCB CONNECTION DIAGRAM................................18
5. ELECTRICAL PARTS LIST........................................26
6. ADJUSTMENT.........................................................30
7. GENERAL INFORMATION.......................................32
7.1 DISASSEMBLY ..................................................32
7.2 PARTS ................................................................33
7.2.1 IC...............................................................33
7.2.2 DISPLAY ...................................................36
8. OPERATIONS AND SPECIFICATIONS....................37
KEH-1950 X1M/ES
KEH-1900/X1M/UC
- This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-644 CRT1800 2M Cassette Mech. Module:Circuit Description, Mech.Description, Disassembly
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Summary

Service Manual Introduction and Contents

Service Manual Introduction

Information for qualified technicians, safety warnings.

Safety Information

Safety Precautions and Warnings

Critical safety guidelines, lead and chemical warnings.

Exploded Views and Parts List

Cassette Mechanism Assembly

Cassette Mechanism Parts Illustration

System Block Diagrams

Tuner Amplifier Unit Block Diagram

Shows functional blocks and connections within the Tuner Amp Unit.

Cassette PCB and Keyboard Unit Block Diagrams

Overall Connection Diagram

Tuner Amp Unit Overall Connection

Shows the complete wiring and signal flow for the Tuner Amp Unit.

Power Amp and System Controller Connections

Details wiring and signal paths for the power amplifier and system controller.

Tuner Amp Unit Wiring Details

Provides a detailed view of the Tuner Amp Unit's wiring and component connections.

Schematic Diagram

Cassette PCB and EQ Amplifier Schematics

Shows detailed circuit schematics for the Cassette PCB and EQ Amplifier.

Power Amplifier and Keyboard Unit Schematics

Presents detailed circuit schematics for the Power Amplifier and Keyboard Unit.

Keyboard Unit Component Schematics

Detailed schematic view of components on the Keyboard Unit.

FM;AM Tuner Unit Circuit Schematics

Detailed circuit schematics for the FM/AM Tuner Unit.

FM;AM Tuner Unit Circuit Details

Further detailed circuit schematics for the FM/AM Tuner Unit.

PCB Connection Diagram

Tuner Amp Unit PCB Layout

Main Unit PCB Layouts

Tuner Amp Unit PCB Top Layer

Component Layouts for Various PCBs

FM;AM Tuner Unit PCB Top Layer

FM;AM Tuner Unit PCB Bottom Layer

Keyboard Unit PCB Layouts

Cassette PCB Layout

Electrical Parts List

Component Parts: Resistors, Diodes, Transistors

Component Parts: Capacitors and Resistors

Component Parts: Miscellaneous, Resistors, Capacitors

Component Parts: Capacitors, Units, Switches

Adjustment Procedures

Tuner Unit Adjustment Connection Diagram

Illustrates connections for tuning adjustments on the Tuner Unit.

FM Adjustment Settings and Methods

Details FM adjustment procedures, frequencies, and methods for different models.

General Information and Disassembly

Disassembly Instructions: Case and Panel

Operations and Specifications

Wiring Diagram for Power and Speakers

Basic Operations

Listening to Music: Tuner and Cassette Operations

Tuner and Cassette Player Basic Functions

Specifications

Amplifier, FM;AM Tuner, and Cassette Specifications

KEH-1950;X1 M;ES Model Specifications

Pioneer KEH-1950 Specifications

General

Brand	Pioneer
Model	KEH-1950
Category	Car Receiver
Language	English