Panasonic cq mr 555 service manual

Page 1

ORDER NO. ACED9904201

Service Manual

AUTOMOTIVE CONSUMER ELECTRONICS

CQ-MR555LEN

Specifications"
General Lw Radio
Power supply : 12V DC (11V-16V) Frequency range : 153 - 279kHz

Test Voltage 14.4V, Useable sensitivity : 32 dB/uv (SIN 20 dB)

Negative ground
Tone Controls : Bass; 112 dB at 100Hz MD Player

: Treble; 112 dB at 10kHz Channel : 2 channels

Currenl consumption : Less than 2.5 A DA Conversion : 16~bit linear

(MD mode, 045w 4-Speaker) Frequency response : 5 to 20.000Hz
Maximum Power Output : 40w x 4 (at 40) Slgnal to Noise ratio : 90 dB (tkHz)
Power Output : 20W x 4 (DIN45 324, at 49) Wow and flutter : Below measurable limits
Speaker Impedance : 4 - an
Pro-Amp Output Voltage : 2V
Pre-Amp Output Impedance : 6009 Dimensions (WXHXD) : 178 (W) x 50 (H) x 150 (D) mm

Weight : 1.4 kg
FM Stereo Radio
Frequency range : 87.5 - 108MHz * _ _ , .
Useable sensitivity : 6 dB/uV (S/N so dB) 3,23%}: 33: 3:532 313* ° 9°53? WWW"
Stereo separation : 35 dB (at ikHz) " Dimensions and weight shown are approximate.
"' Above specifications comply with ElA standards.

MW Radio
Frequency range : 531 - 1,802kHz
Useabie sensitivity : 28 dB/uv (S/N 20 dB)

©1999 Matsushlte Communication industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation at law,

I
Panasonlc (WW

Page 2

CO-MR555LEN I

public
service a product.

AWARNING

This service information is designed for experienced repair technicians only and Is not designed for use by the general
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the products dealt within this service infometion by anyone else could result In serious injury or death.

CONTENTS

FEATURES .....................
REPLACING THE FUSE
MAINTENANCE
RADIO AND MD DECK ALIGNMENT
DIMENSIONS

Precautions (ISO Connector) .....
Laser Products ...........................
Power and Sound Controls.
Radio Basics .......................
RDS (Radio Data System) Reception
Mini Disc Player Basics ......
CD Changer Basics .....
Remote Control Basics

-¥-I-|-A

Anti-Theft System 8
Installation ........... a, 9
Electrical Connection .. ........ 9
Speaker Connection .........
Notes on Mini Discs (MD)
WIRING CONNECTION ................................................... 10
BLOCK DIAGRAM. 11, 12

WIRING DIAGRAM (Display Block)
WIRING DIAGRAM (Main / MD Interface Block) .
WIRING DIAGRAM (MD Servo Block)"

WIRING DIAGRAM (Front/ Eject SW Block)".
SCHEMATIC DIAGRAM (Display! Front / Eject SW Block) 17
SCHEMATIC DIAGRAM (Main / MD Interface Block) ...... 18

SCHEMATIC DIAGRAM (MD Servo Block) . . ..19
TERMINALS DESCRIPTION .20 to 22
PACKAGE AND IC BLOCK DIAGRAM ..... 23 to 26
REPLACEMENT PARTS LIST ..... 27 to 33
EXPLODED VIEW (Unit) ..........

EXPLODED VIEW (MD Deck) ..

FEATURES

- 1DIN Size Body with MD Player, AM/FM Tuner, Power
AMP (40Wx4) and CD Changer Control Function

- PRE Output Connector Function

. Detachable Face Plate Security

- SHDB (Super High Definition Bass) Function

REPLACING THE FUSE

Be sure to use a fuse of the specified rating (15A) when
replacing a blown fuse. Fuses with higher capacity rat-
ings, use of any substitute, or connection without a fuse
may result in a fire hazard or damage to the unit.

MAINTENANCE

Your product is designed and manufactured to ensure a
minimum of maintenance. Use a soft colth for routine ex-
terior cleaning. Never use benzine, thinner, or other sol-
vent

RADIO AND MD DECK ALIGNMENT

RADIO BLOCK

Do not align the AM and FM package block is necessary.
it will be supplied already alined at the factory.

MD DECK BLOCK

This models has no servo alignment points because mi-
crocomputer controls the servo circuit.

DIMENSIONS