Sony WX-4500-X Service manual

WX-4500X

SERVICE MANUAL

Ver 1.1 2002. 10

Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol ; are trademarks of Dolby Laboratories Licensing Corporation.

CD Section

TC Section

US Model

Model Name Using Similar Mechanism NEW

CD Drive Mechanism Type

Optical Pick-up Name RAF0143A

Model Name Using Similar Mechanism WX-C55

Tape Transport Mechanism Type MG-25E-136

MG-318RW/ A-153

AUDIO POWER SPECIFICATIONS

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 92 dB Frequency response 10 – 20,000 Hz Wow and flutter Below measurable limit Laser Diode Properties 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.

Cassette player section

Tape track 4-track 2-channel stereo Wow and flutter 0.08 % (WRMS) Frequency response 30 – 18,000 Hz Signal-to-noise ratio

Cassette type Dolby B NR Dolby NR off

TYPE II, IV 67 dB 58 dB TYPE I 64 dB 55 dB

SPECIFICATIONS

Tuner section

Tuning range FM tuning interval:

50 kHz/200 kHz switchable

87.5 – 108.0 MHz (at 50 kHz step)

87.5 – 107.9 MHz

(at 200 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Usable sensitivity 8 dBf Selectivity 75 dB at 400 kHz Signal-to-noise ratio 65 dB (stereo),

70 dB (mono) Harmonic distortion at 1 kHz

0.7% (stereo),

0.4% (mono) Separation 35 dB at 1 kHz Frequency response 30 – 15,000 Hz

– Continued on next page –

9-873-326-02

2002J0400-1

CHANGER CONTROL AUDIO MASTER

Sony Corporation

e Vehicle Company

Published by Sony Engineering Corporation

WX-4500X

Tuning range AM tuning interval:

9 kHz/10 kHz switchable 531 - 1,602 kHz (at 9 kHz step) 530 – 1,710 kHz

(at 10 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity 30 µV

Power amplifier section

Outputs Speaker outputs

(sure seal connectors) Speaker impedance 4 – 8 ohms Maximum power output 50 W × 4 (at 4 ohms)

General

Outputs Audio output

Subwoofer outout (mono)

Power antenna relay

control lead

Power amplifier control

lead Inputs Telephone ATT control lead

Illumination control lead

BUS control input

connector

BUS audio input connector

Remote controller input

connector

Antenna input connector T one controls Bass ±10 dB at 62 Hz

Treble ±10 dB at 16 kHz Loudness +8 dB at 100 Hz

+2 dB at 10 kHz Power requirements 12 V DC car battery

(negative ground) Dimensions Approx. 178 × 100 × 186 mm

(7 1/8 × 4 × 7 3/8 in.)

(w/h/d) Mounting dimension Approx. 178 × 100 × 165 mm

(7 1/8 × 4 × 6 1/2 in.)

(w/h/d) Mass Approx. 2.1 kg (4 lb. 10 oz.) Supplied accessories Parts for installation and

connections (1 set)

SERVICE NOTE

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 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 PICK-UP FLEXIBLE BOARD

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

NOTE

This unit cannot be connected to a digital preamplifier or an equalizer.

Design and specifications are subject to change without notice.

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 P ARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

WX-4500X

1. GENERAL

Location of Controls............................................................... 4

Getting Started........................................................................ 5

CD Player ............................................................................... 5

Cassette Player ....................................................................... 6

Radio ...................................................................................... 6

Other Functions ...................................................................... 7

Connections ............................................................................ 9

2. DISASSEMBLY

2-1. Front Panel Assy .............................................................. 11

2-2. CD Mechanism Block ...................................................... 12

2-3. CD Main Board ................................................................ 12

2-4. Tension Spring (FL) ......................................................... 13

2-5. Floating Block Assy ......................................................... 13

2-6. Roller Arm Assy ............................................................... 14

2-7. Optical Pick-up Assy........................................................ 14

2-8. Chassis (Top) Assy........................................................... 15

2-9. Main Board ...................................................................... 15

2-10. Heat Sink .......................................................................... 16

2-11. Tape Mechanism Block .................................................... 16

3. ASSEMBLY OF MECHANISM DECK

3-1. Housing ............................................................................ 17

3-2. Arm (Suction)................................................................... 17

3-3. Lever (LDG-A)/(LDG-B) ................................................ 18

3-4. Gear (Loading FT) ........................................................... 18

3-5. Guide (U) ......................................................................... 19

3-6. Main Motor Assy ............................................................. 19

5. ELECTRICAL ADJUSTMENTS

Tape Section ......................................................................... 20

6. DIAGRAMS

6-1. IC Pin Descriptions .......................................................... 22

6-2. Block Diagram –CD Section–.......................................... 26

6-3. Block Diagram –Tuner Section–...................................... 27

6-4. Block Diagram –Tape Section– ....................................... 28

6-5. Circuit Boards Location ................................................... 29

6-6. Printed Wiring Boards –CD Mechanism Section–........... 30

6-7. Schematic Diagram –CD Mechanism Section – .............. 31

6-8. Printed Wiring Board –Main Section–............................. 32

6-9. Schematic Diagram –Main Section (1/3)– ....................... 34

6-10. Schematic Diagram –Main Section (2/3)– ....................... 35

6-11. Schematic Diagram –Main Section (3/3)– ....................... 36

6-12. Printed Wiring Board –Jog Section– ................................ 37

6-13. Printed Wiring Board –Display Section– ......................... 38

6-14. Schematic Diagram –Display, Jog Section– .................... 40

7. EXPLODED VIEWS

7-1. Cover Section ................................................................... 46

7-2. Front Panel Section .......................................................... 47

7-3. Main Board Section ......................................................... 48

7-4. CD Mechanism Section (1) .............................................. 49

7-5. CD Mechanism Section (2) .............................................. 50

7-6. Tape Mechanism Section ................................................. 51

8. ELECTRICAL PARTS LIST ................................... 52

4. MECHANICAL ADJUSTMENTS.............................. 20

WX-4500X

SECTION 1

GENERAL

This section extracted from instruction manual.

WX-4500X

Connections

WX-4500X

10 10

SECTION 2

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

WX-4500X

Set Front Panel Assy CD Mechanism Block

Floating Block Assy Roller Arm Assy

Chassis (Top) Assy

Main Board Heat Sink

Tape Mechanism Block

Note : Follow the disassembly procedure in the numerical order given.

2-1. FRONT PANEL ASSY

PTT 2.6x6

CD Main Board Tension Spring (FL)

Optical Pick-up Assy

panel assy, front

claw

CN901

PTT 2.6x6

cla

WX-4500X

)

2-2. CD MECHANISM BLOCK

CD mechanism block

PTT 2.6x6

bracket (MD

2-3. CD MAIN BOARD

CD MAIN board

PTT 2.6x6

M 2x3.0

CNJ103

CNJ101

CNJ102

PTT 2.6x6

M 2x3.0

claw

CNP10

2-4. TENSION SPRING (FL)

spring (FL), tension

WX-4500X

2-5. FLOATING BLOCK ASSY

spring (angle), tension

Fit lever in the

direction of the arrow.

shaft

spring (SPM), tension

floating block ass

shaft

lever (LE.L)

washer (M)

WX-4500X

2-6. ROLLER ARM ASSY

Fit lever in the

direction of the arrow.

shaft

spring (roller)

arm assy, roller

spring (roller)

shaft

2-7. OPTICAL PICK-UP ASSY

shaft (sled guide)

rack (feed)

gear (woam wheel)

PTP 1.7x4

cover (P)

pick-up assy, optical

PTT 2.6x10

PTT 2.6x6, ground point

MAIN board

CN450

2-8. CHASSIS (TOP) ASSY

PTT 2.6x6

connector

projection

chassis (TOP) assy

WX-4500X

2-9. MAIN BOARD

CN400

PTT 2.6x

WX-4500X

2-10. HEAT SINK



heat sink

BTP 2.6x8

PTT 2.6x10

2-11. TAPE MECHANISM BLOCK

tape mechaniam block

PTT 2.6x10

PTT 2.6x5

PTT 2.6x10

PTT 2.6x5

SECTION 3

ASSEMBLY OF MECHANISM DECK

Note : This set can be assemble according to the following sequence.

Head, Housing Arm (Suction)

Note : Follow the assembly procedure in the numerical order given.

3-1. HOUSING

Put the housing

under

Fit claw on B part.

part.

housing

Install the hanger onto

two claws of the housing.

Lever (LDG-A) / (LDG-B) Gear (Loading FT) Guide (U) Main Motor Assy

Fit projection on C part.

part

Holder the hanger by bending the claw.

Install the catcher to the hanger.

hanger

Fit projection on D part.

WX-4500X

3-2. ARM (SUCTION)

projection

part

Hold the hanger by

bending the claw.

part

head

Move the arm (suction) in the arro

Direction and fit on projection.

Fit the arm (suction) on the shaft.

WX-4500X

3-3. LEVER (LDG-A) / (LDG-B)

shaft

Fit the lever (LDG-A) on

shafts

to C and install it.

shaft

type-E stop ring 2.0

shaft

Fit the lever (LDG-B) on

shafts

and B and install it.

shaft

3-4. GEAR (LOADING FT)

hole

Align hole in the gear (LDG-D)

with hole the lever (LDG-A).

gear (LDG-D)

lever (LDG-A)

gear (LDG-FB)

tension spring (LD-2)

gear (loading FT)

polyethylene washer

tension spring (LD-1)

Move the lever (LDG-B)

in the arrow direction.

3-5. GUIDE (U)

)

claws

WX-4500X

guide (C)

3-6. MAIN MOTOR ASSY

belt (25)

precision screws P 2x2

main motor assy

(CAPSTAN/REEL) (M904

+ 43 hidden pages

Sony WX-4500-X Service manual

SERVICE NOTE

TABLE OF CONTENTS

GENERAL

DISASSEMBLY

Set Front Panel Assy CD Mechanism Block

CD mechanism block

CD MAIN board

MAIN board

chassis (TOP) assy

heat sink

ASSEMBLY OF MECHANISM DECK

Head, Housing Arm (Suction)

housing

gear (loading FT)

main motor assy