MAZDA CR-YM4270K, CR-YM4272K Service Manual

ORDER No.1103

AUTOMOTIVE ELECTRONICS

MAZDA
CR-YM4270K
CR-YM4272K

AM/FM MPX ELECTRONIC TUNING
RADIO [Center Panel Module System]

VEHICLE : Mazda 6
DESTINATION : Europe
PRODUCED AFTER : Feb., 2002

Specifications*

General
Power Supply DC 12V (11V - 16V)

Test Voltage 14.4V

Negative Ground
Current Consumption Less than 4A ( Illumination ON )
Maximum Power Output 25W × 4ch

FM Stereo Radio
Frequency Range 87.5 - 108.0MHz
Effective Sensitivity Less than 10dB/µV (S/N 30 dB,

15kHz LPF)
Stereo Separation 25 dB (15kHz LPF)

AM Radio
Frequency Range 531 - 1,602kHz
Effective Sensitivity 6dB/µV (S/N 20 dB)

Dimensions** (W×H×D) 201.7 × 110 × 164 (mm)
Weight** 1.5 kg

* Specifications and the design are subject to possible modification
without notice due to improvements.

** Dimensions and Weight shown are approximate.

MAZDA / CR-YM4270K / CR-YM4272K

CONTENTS

Page Page

1 FEATUERS 2
2 SYSTEM BLOCK DIAGRAM
3 CENTER PANEL MODULE SYSTEM PART NUMBERS
4 FRONT VIEW AND CONNECTORS
5 SIDE VIEW AND CONNECTORS
6 REAR/TOP/BOTTOM VIEW AND CONNECTORS
7 BLOCK DIAGRAM

8 TERMINALS DESCRIPTION 8

2

9 PACKAGE AND IC BLOCK DIAGRAM

3

10 REPLACEM ENT PARTS LIST
11 EXPLODED VIEW

5
5

12 WIRING DIAGRAM

6

13 SCHEMAT IC DIAGRAM

7

1 FEATUERS

9
11
17
18
21

∙ PLL (Phase Locked Loop) synthesized tuning.
∙ 12-FM,6-AM presets with preset scan.
∙ RDS receiver/decoder.
∙ Intelligent Volume Control (VOL,BASS,BAL,FADE)

2 SYSTEM BLOCK DIAGRAM

∙ Tape Player Control.
∙ CD/MD Player Control.
∙ CD Changer Control.
∙ Clock function.

2

MAZDA / CR-YM4270K / CR-YM4272K

3 CENTER PANEL MODULE SYSTEM PART NUMBERS

3

MAZDA / CR-YM4270K / CR-YM4272K

4

4 FRONT VIEW AND CONNECTORS

MAZDA / CR-YM4270K / CR-YM4272K

5 SIDE VIEW AND CONNECTORS

5

MAZDA / CR-YM4270K / CR-YM4272K

6 REAR/TOP/BOTTOM VIEW AND CONNECTORS

6

7 BLOCK DIAGRAM

MAZDA / CR-YM4270K / CR-YM4272K

7