CDX-L550, CDX-L550V, CDX-L550X - Sony Car Audio Service Manual (repair manual)

cdx-l550, cdx-l550v, cdx-l550x service manual
Model
CDX-L550 CDX-L550V CDX-L550X
Pages
44
Size
6.54 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-l550-cdx-l550v-cdx-l550x.pdf
Date

Read Sony CDX-L550 / CDX-L550V / CDX-L550X Service Manual online

1
Ver 1.1  2001. 06
Model Name Using Similar Mechanism
NEW
CD Drive Mechanism Type
MG-393X-121//Q
Optical Pick-up Name
KSS-720A
SERVICE MANUAL
AEP Model
UK Model
CDX-L550/L550V/L550X
E Model
CDX-L550
CDX-L550/L550V/L550X
FM/MW/LW COMPACT DISC PLAYER
CD player section
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Tuner section
FM
Tuning range
87.5 – 108.0 MHz
Aerial terminal
External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
66 dB (stereo),
72 dB (mono)
Harmonic distortion at 1 kHz
0.6% (stereo),
0.3% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
MW/LW
Tuning range
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Aerial terminal
External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
MW: 30 µV
LW: 40 µV
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
Speaker impedance
4 – 8 ohms
Maximum power output 50 W 
× 4 (at 4 ohms)
SPECIFICATIONS
General
Outputs
Audio outputs
Power aerial relay control
lead
Power amplifier control lead
Inputs
Telephone ATT control lead
Remote controller input
connector
Aerial input connector
Tone controls
Bass ±8 dB at 100 Hz
Treble ±8 dB at 10 kHz
Power requirements
12 V DC car battery
(negative ground)
Dimensions
Approx. 178 
× 50 × 177 mm
(w/h/d)
Mounting dimension
Approx. 182 
× 53 × 161 mm
(w/h/d)
Mass
Approx. 1.2 kg
Supplied accessories
Parts for installation and
connections (1 set)
Front panel case (1)
Design and specifications are subject to change without
notice.
Photo: CDX-L550X
• The tuner and CD sections have no adjustments.
Sony Corporation
e Vehicle Company
Shinagawa Tec Service Manual Production Group
9-870-256-12
2001F0400-1
© 2001. 6
2
TABLE OF CONTENTS
1. GENERAL
Location of controls ................................................................. 3
Getting Started ......................................................................... 3
CD Player ................................................................................ 4
Radio ....................................................................................... 4
RDS ......................................................................................... 5
Connections ............................................................................. 7
2. DISASSEMBLY
2-1.   Sub Panel Assy .................................................................... 8
2-2.   CD Mechanism Block ......................................................... 8
2-3.   Main Board ......................................................................... 8
2-4.   Heat Sink ............................................................................. 9
2-5.   Chassis (T.U) Assy .............................................................. 9
2-6.   Disc In Board, Guid (Disc) ............................................... 10
2-7.   Servo Board ....................................................................... 10
2-8.   Arm Roller Assy ................................................................ 11
2-9.   Chassis (OP) Assy ............................................................. 11
2-10. Optical Pick-up Block ....................................................... 12
3. DIAGRAMS
3-1.   IC Pin Descriptions ........................................................... 13
3-2.   Block Diagram –CD Section– ........................................... 15
3-3.   Block Diagram –Tuner Section– ....................................... 16
3-4.   Block Diagram –Display Section– .................................... 17
3-5.   Circuit Boards Location .................................................... 17
3-6.   Printed Wiring Boards –CD Mechanism Section– ............ 18
3-7.   Schematic Diagram –CD Mechanism Section– ................ 20
3-8.   Printed Wiring Board –Main Section– .............................. 21
3-9.   Schematic Diagram –Main Section (1/2)– ........................ 22
3-10. Schematic Diagram –Main Section (2/2)– ........................ 23
3-11. Printed Wiring Board –Sub (CD) Section– ....................... 24
3-12. Schematic Diagram –Sub (CD) Section– .......................... 25
3-13. Schematic Diagram –Key Section– .................................. 26
3-14. Printed Wiring Board
–Key Section (L550/L550X)– ........................................... 27
3-15. Printed Wiring Board –Key Section (L550V)– ................. 28
4. EXPLODED VIEWS
4-1.   Chassis Section ................................................................. 32
4-2.   Front Panel Section ........................................................... 33
4-3.   CD Mechanism Section (1) ............................................... 34
4-4.   CD Mechanism Section (2) ............................................... 35
4-5.   CD Mechanism Section (3) ............................................... 36
5. ELECTRICAL PARTS LIST
........................................ 37
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED  LINE
WITH  MARK  
0
  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS  WHOSE
PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
Notes on Chip Component Replacement
Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SERVICE NOTES
This label is located on the bottom of the chassis.
This label is located on the drive unit's internal
chassis.
When replacing the chassis (T.U) of mechanism deck which have
the “CAUTION LABEL” attached, please be sure to put a new
CAUTION LABEL (3-223-913-11) to the chassis (T.U).
CDX-L550/L550V/L550X
AEP/UK model:
3
CDX-L550/L550V/L550X
SECTION 1
GENERAL
This section is extracted
from instruction manual.
4
CDX-L550/L550V/L550X
Page of 44
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Here you can read online and download Sony CDX-L550 / CDX-L550V / CDX-L550X Service Manual in PDF. CDX-L550 / CDX-L550V / CDX-L550X service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CDX-L550 / CDX-L550V / CDX-L550X Car Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.