CDX-L350/L450X/L470X
SERVICE MANUAL |
US Model |
Ver 1.0 2001. 01 |
Canadian Model |
CDX-L350 |
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AEP Model |
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CDX-L450X |
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E Model |
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CDX-L450X/L470X |
Photo: CDX-L470X
• The CD sections have no adjustments.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION 23 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 5% total harmonic distortion.
CD player section
Signal-to-noise ratio |
90 dB |
Frequency response |
10 – 20,000 Hz |
Wow and flutter |
Below measurable limit |
Laser Diode Properties (CDX-L350) |
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Material |
GaAlAs |
Wavelength |
780 nm |
Emission Duration |
Continuous |
Laser output power |
Less than 44.6 µW* |
*This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block.
Tuner section
FM
Tuning range |
CDX-L350: |
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87.5 – 107.9 MHz |
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CDX-L450X/L470X: |
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FM tuning interval: |
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50 kHz/200 kHz |
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switchable |
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87.5 – 108 MHz |
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(at 50 kHz step) |
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87.5 – 107.9 MHz |
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(at 200 kHz step) |
Antenna terminal |
External antenna connector |
Intermediate frequency |
10.7 MHz |
Usable sensitivity |
11 dBf |
Selectivity |
75 dB at 400 kHz |
Signal-to-noise ratio |
65 dB (stereo), |
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68 dB (mono) |
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Model Name Using Similar Mechanism |
NEW |
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CD Drive Mechanism Type |
MG-393X-121//K |
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Optical Pick-up Name |
KSS-720A |
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Harmonic distortion at 1 kHz |
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0.7% (stereo), |
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0.5% (mono) |
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Separation |
33 dB at 1 kHz |
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Frequency response |
30 – 15,000 Hz |
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AM |
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Tuning range |
CDX-L350: |
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530 – 1,710 kHz |
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CDX-L450X/L470X: |
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AM tuning interval: |
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9 kHz/10 kHz |
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switchable |
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531 – 1,602 kHz |
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(at 9 kHz step) |
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530 – 1,710 kHz |
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(at 10 kHz step) |
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Antenna terminal |
External antenna connector |
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Intermediate frequency |
10.7 MHz/450 kHz |
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Sensitivity |
30 µV |
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Power amplifier section |
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Outputs |
Speaker outputs |
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(sure seal connectors) |
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Speaker impedance |
4 – 8 ohms |
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Maximum power output |
50 W × 4 (at 4 ohms) |
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– Continued on next page –
FM/AM COMPACT DISC PLAYER
9-870-257-11 Sony Corporation
2001A0400-1 Audio Entertainment Group
© 2001. 1 |
General Engineering Dept. |
1
CDX-L350/L450X/L470X
General
Outputs |
Audio output |
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Power amplifier control |
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lead (CDX-L350) |
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Power antenna relay |
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control lead (CDX-L350) |
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Power aerial relay control |
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lead (CDX-L450X/L470X) |
Tone controls |
Bass ±10 dB at 20 Hz (CDX-L350) |
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Treble ±10 dB at 20 kHz (CDX-L350) |
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Bass ±9 dB at 100 Hz (L450X/L470X) |
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Treble ±9 dB at 10 kHz (L450X/L470X) |
Power requirements |
12 V DC car battery |
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(negative ground) |
Dimensions |
Approx. 178 × 50 × 176 mm |
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(7 1/8 × 2 × 7 in.) |
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(w/h/d) |
Mounting dimensions |
Approx. 182 × 53 × 161 mm |
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(7 1/4 × 2 1/8 × 6 3/8 in.) |
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(w/h/d) |
Mass |
Approx. 1.2 kg (2 lb. 10 oz.) |
Supplied accessories |
Parts for installation and |
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connections (1 set) |
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Front panel case (1) |
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Card remote commander |
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RM-X115 (CDX-L350/L470X) |
Note (L450X/L470X)
This unit cannot be connected to a digital preamplifier or an equalizer.
Design and specifications are subject to change without notice.
US/Canadian/E model:
CAUTION
Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
If the optical pick-up block is defective, please replace the whole optical pick-up block.
Never turn the semi-fixed resistor located at the side of optical pick-up block.
optical pick-up block
semi-fixed resistor
SERVICE NOTES
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 pickup block. Therefore, when checking the laser diode emission, observe 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 damaged by heat.
AEP model:
This product is classified as a CLASS 1 LASER PRODUCT. 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) 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).
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
2
CDX-L350/L450X/L470X
TABLE OF CONTENTS
1. GENERAL
Location of controls ................................................................. |
4 |
Getting Started ......................................................................... |
4 |
CD Player ................................................................................ |
5 |
Radio ....................................................................................... |
5 |
Other Functions ....................................................................... |
6 |
Connections ............................................................................. |
7 |
2. DISASSEMBLY
2-1. |
Sub Panel Assy .................................................................... |
9 |
2-2. |
CD Mechanism Block ....................................................... |
10 |
2-3. |
Main Board ....................................................................... |
10 |
2-4. |
Heat Sink ........................................................................... |
11 |
2-5. |
Chassis (T) Sub Assy ........................................................ |
11 |
2-6. |
Lever Section .................................................................... |
12 |
2-7. |
Servo Board ....................................................................... |
12 |
2-8. |
Shaft Roller Assy .............................................................. |
13 |
2-9. |
Floating Block Assy .......................................................... |
13 |
2-10. |
Optical Pick-up Block ....................................................... |
14 |
3. ELECTRICAL ADJUSTMENTS ................................. |
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4. DIAGRAMS |
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4-1. |
IC Pin Description ............................................................. |
17 |
4-2. |
Block Diagram –CD Section– ........................................... |
19 |
4-3. |
Block Diagram –Tuner Section– ....................................... |
20 |
4-4. |
Block Diagram –Display Section– .................................... |
21 |
4-5. |
Circuit Boards Location .................................................... |
21 |
4-6. |
Printed Wiring Boards –CD Mechanism Section– ............ |
22 |
4-7. |
Schematic Diagram –CD Mechanism Section– ................ |
24 |
4-8. |
Printed Wiring Board –Main Section– .............................. |
25 |
4-9. |
Schematic Diagram –Main Section (1/2)– ........................ |
26 |
4-10. |
Schematic Diagram –Main Section (2/2)– ........................ |
27 |
4-11. Printed Wiring Board –Display Section– .......................... |
28 |
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4-12. |
Schematic Diagram –Display Section– ............................. |
29 |
5. EXPLODED VIEWS |
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5-1. |
Chassis Section ................................................................. |
32 |
5-2. |
Front Panel Section ........................................................... |
33 |
5-3. |
CD Mechanism Section (1) ............................................... |
34 |
5-4. |
CD Mechanism Section (2) ............................................... |
35 |
5-5. |
CD Mechanism Section (3) ............................................... |
36 |
6. ELECTRICAL PARTS LIST ........................................ |
37 |
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3
CDX-L350/L450X/L470X
SECTION 1
GENERAL
This section is extracted from instruction manual.
4
CDX-L350/L450X/L470X
5
CDX-L350/L450X/L470X
6
CDX-L350/L450X/L470X
Connections
7
CDX-L350/L450X/L470X
8
CDX-L350/L450X/L470X
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
Set |
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Sub Panel Assy |
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CD Mechanism Block |
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Main Board |
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Heat Sink |
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Chassis (T) Sub Assy |
Lever Section |
Shaft Roller Assy |
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Servo Board |
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Floating Block Assy 
Optical Pick-up Block
Note : Follow the disassembly procedure in the numerical order given.
2-1. SUB PANEL ASSY
3 claw
2 PTT 2.6x6
three claws
4 claws
1 PTT 2.6x6
5 sub panel assy
9
CDX-L350/L450X/L470X
2-2. CD MECHANISM BLOCK
7 bracket (CD)
5 CD mechanism block
6 PTT 2.6x6
2 PTT 2.6x6
3
1 PTT 2.6x6
4 CNP701
2-3. MAIN BOARD
3 screw (+BTT)
5 MAIN board
4 screws (+BTT)
2 PTT 2.6x8
1 PTT 2.6x8
10
2-4. HEAT SINK
2-5. CHASSIS (T) SUB ASSY
2 P 2x3
1 Unsolder the
lead wires.
black red white
CDX-L350/L450X/L470X
6 heat sink
5 PTT 2.6x8
4 PTT 2.6x8
3 PTT 2.6x12
2 PTT 2.6x8
1 PTT 2.6x8
3 P 2x3
4 chassis (T) sub assy
11
CDX-L350/L450X/L470X
2-6. LEVER SECTION
4 claws
2-7. SERVO BOARD
6 special screws
3 Removal the solders.
1 CN3
4 P 2x3
5 loading motor assy
5 guide (disc)
6 lever (R)
3 tension spring (LR)
7 lever (L)
1 special screw
2 IN SELF SW board
7 special screw
2 CN2
8 SERVO board
12
CDX-L350/L450X/L470X
2-8. SHAFT ROLLER ASSY
•When installing, take note of the positions arm (roller) and washers. (Fig. 1)
3 retaing ring (RA)
4 shaft retainer
shaft retainer |
arm |
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retaing ring (RA) arm washer |
washer |
shaft retainer |
Fig. 1
5 shaft roller assy
2 arm (roller)
1 tension spring (RA)
2-9. FLOATING BLOCK ASSY
6 floating block assy
7 compression spring (FL)
1 tension spring (KF1)
8 compression spring (FL)
4 Fit lever (D) in the direction of the arrow.
5 Turn loading ring in the direction of the arrow.
2 damper (T)
3 damper (T)
13
CDX-L350/L450X/L470X
2-10. OPTICAL PICK-UP BLOCK
1 P 2x3
2 sled motor assy
3 optical pick-up block
14
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