Pioneer keh 2500 r service manual

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(U) PIONEER

The Art of Entertainment

Service

anual

HIGH POWER CASSETTE RDS TUNER

KEH-EEDOR mm,

NOTE:
0 See the separate manual CX-644(CRT1800) for the cassette mechanism description.

ORDER NO.

CRT1948

KEH'253.R X'lM/EW

. The cassette mechanism assy employed in this model is one of X-ZM series

CONTENTS

1. SAFETY INFORMATION ............................................ 2
2. EXPLODED VIEWS AND PARTS LIST ....................... 3
3. SCHEMATIC DIAGRAM ........................................... 10
4. PCB CONNECTION DIAGRAM ................................ 18
5. ELECTRICAL PARTS LIST. ....................................... 27
6. ADJUSTMENT .......................................................... 33
7. GENERAL INFORMATION ....................................... 35

7.1 PARTS ................................................................. 35

7.1.1 IC ................................................................ 35

7.1.2 DISPLAY ..................................................... 40

7.2 DIAGNOSIS ........................................................ 41
7.2.1 DISASSEMBLY .......................................... 41

7.3 EXPLANATION ................................................... 42
7.3.1 BLOCK DIAGRAM ..................................... 42

8. OPERATIONS AND SPECIFICATIONS ..................... 44

PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE INC.

4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
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. 501 Orchard Road, #10-00, Lane Crawford Place, Singapore 0923

© PIONEER ELECTRONIC CORPORATION 1997

K-FFU. JAN. 1997 Printed in Japan

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KEH-ESODH,EEBDH

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.

Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair
complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.

If you are not qualified to perform the repair of this product properly and safely, you should mot risk trying to do so
and refer the repair to a qualified service technician.