Sony CDX-4483ESP Service Manual

CDX-4483ESP

SERVICE MANUAL

SPECIFICATIONS

East European Model

Model Name Using Similar Mechanism NEW CD Drive Mechanism Type MG-363W-121 Optical Pick-up Name KSS-520A

CD player section

System Compact disc digital audio

system Signal-to-noise ratio 90 dB Frequency response 10 - 20,000 Hz Wow and flutter Below measurable limit

Tuner section

FM*

Tuning range 65.0 - 74.0 MHz

(at 30 kHz step)

87.5 - 108.0 MHz

(at 50 kHz step) Aerial terminal External aerial connector Intermediate frequency 10.7 MHz Usable sensitivity 8 dBf Selectivity 75 dB at 400 kHz Signal-to-noise ratio 65 dB (stereo),

68 dB (mono) Harmonic distortion at 1 kHz

0.5% (stereo),

0.3% (mono) Separation 35 dB at 1 kHz Frequency response 30 - 15,000 Hz Capture ratio 2 dB * There are the numerical values measured at 87.5 -

108.0 MHz.

MW/LW

Tuning range MW : 531 - 1,602 kHz

LW : 153 - 281 kHz Aerial terminal External aerial connector Intermediate frequency 10.71 MHz / 450 kHz Sensitivity MW : 30 µV

LW : 50 µV

Power amplifier section

Outputs Speaker outputs

(sure seal connectors)

Speaker impedance 4 - 8 ohms Maximum power output 40 W × 4 (at 4 ohms)

General

Outputs Line outputs (2)

Power aerial relay control lead Power amplifier control lead Telephone ATT control lead

Tone controls Bass ± 10 dB at 100 Hz

Treble ± 10 dB at 10 kHz

Power requirements 12 V DC car battery

(negative ground)

Dimensions Approx. 178 × 50 × 185 mm

(w/h/d)

Mounting dimensions Approx. 182 × 53 × 162 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.

MICROFILM

FM/MW/LW COMPACT DISC PLAYER

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SERVICE NOTE

NOTES ON CLEANING THE OBJECTIVE LENS

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

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.

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 objecti ve lens in the optical pic k-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

NOTES ON PICK-UP FLEXIBLE BOARD

The pick-up flexible board in this set is secured to the optical pick-up with an adhesive tape. Once the tape is remov ed, an adhering force becomes weak, and it cannot be reused. Therefore, if the optical pick-up is replaced, replace also the pick-up flexible board with a new one.

cotton swabs

objective lens

2-axis actuato

2-axis cover

slide base

Apply CD lens cleaner B-4 (Part No.:J-2501-000-A) to cotton swabs (narrow type) (Part No.:J-2501-023-A) to be lightly wet. Use a force (about 5 g) to make the objective lens in contact with the bottom lightly, and clean the lens by spirals as following below. Replace the cotton swab and repeat this cleaning two or three times.

surface of objective len

Notes:

Do not force to push the objective lens. Otherwise, the plate spring supporting the objective lens will be bent, causing a deteriorated RF waveform. Never touch anything other than the objective lens. Otherwise, a significant deterioration occurs in the RF waveform.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

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TABLE OF CONTENTS

1. GENERAL

A kezel˝oszervek elhelyezkedése................................................ 4

Els˝o lépések ............................................................................... 4

Óra beállítása ............................................................................. 5

CD lejátszó ................................................................................ 5

Rádió ......................................................................................... 6

Egyéb funkciók.......................................................................... 7

További információk ................................................................. 9

Csatlakozások ...........................................................................11

2. DISASSEMBLY

2-1. Cover Assy .......................................................................... 13

2-2. Front Panel Assy ................................................................. 13

2-3. Sub Panel (1) Assy .............................................................. 14

2-4. CD Mechanism Block ......................................................... 14

2-5. Main Board ......................................................................... 15

2-6. Heat Sink ............................................................................. 15

2-7. Chassis (T) Sub Assy .......................................................... 16

2-8. Lever Assy........................................................................... 16

2-9. Servo Board......................................................................... 17

2-10. Roller Assy.......................................................................... 17

2-11. Chassis (OP) (O/S) Assy ..................................................... 18

2-12. Optical Pick-up Block ......................................................... 18

3. ELECTRICAL ADJUSTMENTS

Tuner Section........................................................................... 19

4. DIAGRAMS

4-1. IC Pin Descriptions ............................................................. 23

4-2. Circuit Boards Location ...................................................... 30

4-3. Block Diagram –CD Section–............................................. 31

4-4. Block Diagram –Main Section–.......................................... 33

4-5. Printed Wiring Boards –CD Mechanism Section–.............. 35

4-6. Schematic Diagram –CD Mechanism Section– .................. 39

4-7. Schematic Diagram –Main Section–................................... 44

4-8. Printed Wiring Board –Main Section– ................................ 49

4-9. Printed Wiring Board –Display Section– ............................ 53

4-10. Schematic Diagram –Display Section–............................... 55

5. EXPLODED VIEWS

5-1. Chassis Section ................................................................... 61

5-2. Front Panel Section ............................................................. 62

5-3. CD Mechanism Section (1) ................................................. 63

5-4. CD Mechanism Section (2) ................................................. 64

5-5. CD Mechanism Section (3) ................................................. 65

6. ELECTRICAL PARTS LIST .......................................... 66

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SECTION 1

GENERAL

This section extracted from Dutch instruction manual.

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SECTION 2

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order giv en.

2-1. COVER ASSY

claw

claws

cover assy

claw

2-2. FRONT PANEL ASSY

button (release)

front panel assy

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2-3. SUB PANEL (1) ASSY

PTT 2.6x6

sub panel (1) assy

claw

PTT 2.6x6

2-4. CD MECHANISM BLOCK

CD mechanism block

PTT 2.6x6

bracket (M/D)

PTT 2.6x6

– 14 –

CNP700

2-5. MAIN BOARD

ground point screws

(PTT 2.6 X 6)

MAIN board

ground point screw

(PTT 2.6 X 6)

PTT 2.6x8

2-6. HEAT SINK

PTT 2.6x8

heat sink

PTT 2.6x10

PTT 2.6x8

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2-7. CHASSIS (T) SUB ASSY

P 2x3

chassis (T) sub ass

2-8. LEVER ASSY

lever (R) assy

tension spring (LR)

lever (L) assy

guide (disc)

PS 2x3

DISC IN SW board

claws

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2-9. SERVO BOARD

PTT 2.6x5

wires

!™

SERVO board

P 2x3

loading motor assy

PS 2x5

CN4

PS 2x5

heat sink

!¡

PS 2x5

CN5

CN2

2-10. ROLLER ASSY

• When installing, take note of the positions arm (roller) and washers. (Fig. 1)

PS 2x4

LOAD SW board

washer

arm

washer

Fig. 1

roller assy

arm (roller)

washers

arm

tension spring (RA)

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+ 38 hidden pages