SONY HCD-RX90 Service Manual

HCD-GR8/RX90

SERVICE MANUAL

Ver 1.1 2002.06

HCD-GR8/RX90 is the tuner, deck, CD and amplifier section in MHC-GR8/RX90.

Photo: HCD-RX90

AEP Model

UK Model

HCD-RX90

E Model

Australian Model

Tourist Model

HCD-GR8

* Dolby noise reduction manufactured

under license from Dolby Laboratories Licensing corporation. "DOLBY" and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.

SPECIFICATIONS

Amplifier section

DIN power output (RX90)

Continuous RMS power output RX90: 100+100 watts

GR8: 90+90 watts

Peak music power output GR8: 1500 watts Music power output RX90: 160+160 watts

Inputs VIDEO/MD IN (phono jacks):

Outputs VIDEO/MD OUT (phone

9-960-881-12 Sony Corporation

2002F0500-1 Home Audio Company C 2002.06 Published by Sony Engineering Corporation

80+80 watts (8 ohms, at 1kHz, DIN)

(8ohms at 1kHz, 10% THD)

voltage 250 mV, impedance 47 kilohms MIX MIC (phone jack): sensitivity 1 mV, impedance 10 kilohms

jacks): voltage 250 mV impedance 1 kilohms PHONES (stereo phone jack): accepts headphones of 8 ohms or more. SPEAKER: accepts impedance of 8 to 16 ohms

CD player section

System Compact disc and digital

Laser Semiconductor laser

Laser output Max. 44.6 µW*

Frequency response 2 Hz – 20 kHz (±0.5 dB) Wavelength 780 – 790 nm

Model Name Using Similar Mechanism HCD-GR7/RX70

CD Section

Tape deck Section

SURROUND SPEAKER: accepts impedance of 16 ohms. SUPER WOOFER: Voltage 1 V, impedance 1 kilo ohm

audio system (λ=780 nm)

Emission duration: continuous

*This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture.

CD Mechanism Type Base Unit Name BU-5BD29AL Optical Pick-up Name Model Name Using T ape Transport Mechanism T ype TCM-220WR2

Similar Mechanism HCD-H881

Signal-to-noise ratio More than 90 dB Dynamic range More than 90 dB CD OPTICAL DIGITAL OUT (Square optical connector jack, rear panel) Wavelength 600 nm Output Level –18 dBm

Tape player section

Recording system 4-track 2-channel stereo Frequency response 60 – 13,000 Hz (±3 dB), (DOLBY NR OFF) using Sony TYPE I casstte

60 – 14,000 Hz (±3 dB), using Sony TYPE II cassette

Wow and flutter ±0.15% W.Peak (IEC)

0.1% W .RMS (NAB) ±0.2% W .Peak (DIN)

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CDM38L-5BD29AL

KSS-213D/Q-NP

MINI Hi-Fi COMPONENT SYSTEM

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range EE and CIS models: 65.0 – 74.0 MHz

87.5 – 108.0 MHz Other models: 87.5 – 108.0 MHz Aerial FM lead aerial Aerial terminals 75 ohm unbalanced Intermediate frequency 10.7 MHz

UKV tuner section (EE and CIS models)

Tuning range 65.0 – 74.0 MHz

Polar stereo

AM tuner section

Tuning range RX90: MW: 531 – 1,602 kHz

(with interval set at 9kHz) LW: 153 – 279 kHz (with interval set at 3kHz)

MX, AUS, EA4 and TH models:

531 – 1,602 kHz (with the AM tuning interval st at 9 kHz) 530 – 1,710 kHz (with the AM tuning interval set at 10 kHz)

Other models MW: 531 – 1,602 kHz

(With the MW tuning interval set at 9 kHz) 530 – 1,710 kHz (With the MW tuning interval set 10 kHz) SW: 5.95 – 17.9 MHz

(with the SW tuning interval set at 5 kHz) Aerial AM loop aerial Aerial terminals External aerial terminal Intermediate frequency 450 kHz

General

Power requirements RX90: 220 – 230 V AC, 50/60 Hz MX model: 120 V AC, 50/60 Hz MY and AUS models: 220 – 240 V AC, 50/60 Hz TH model: 220 V AC, 50 Hz Other models: 110 – 120 V or 220 – 240 V

AC, 50/60 Hz Adjustable with voltage selector Power consumption RX90: 230 watts GR8: 220 watts Mass: Approx. 9.5 kg Supplied accessories: AM loop aerial (1)

Remote RM-SD80 (1)

Sony SUM-3 (NS)

Batteries (2)

FM lead aerial (1)

Speaker cords (4)

Design and specifications are subject to change without notice.

MODEL IDENTIFICATION

– BACK PANEL –

PARTS No.

MODEL PARTS NO. GR8 : EA3 model 4-986-845-1π GR8 : MY model 4-986-845-2π GR8 : E3, IA models 4-988-021-0π GR8 : E2 model 4-988-021-1π GR8 : SP model 4-988-021-2π GR8 : TW, JE models 4-988-021-3π GR8 : HK model 4-988-021-4π GR8 : AUS model 4-988-021-5π GR8 : MX model 4-988-021-6π GR8 : EA4, TH, SAF models 4-988-021-7π RX90 : AEP model (Made in Malaysia) 4-986-845-0π RX90 :AEP (Made in Indonesia), AED,

G, UK models

RX90 : EE, CIS model 4-986-982-1π

4-986-982-0π

• Abbreviation AED : Northern European AUS : Australian E2 : 120 V AC Area in E model E3 : 240 V AC Area in E model EA3 : Saudi Arabia EA4 : Israeli EE : East European G : German HK : Hong Kong IA : Indonesia JE : Tourist MX : Mexican MY : Malaysia SAF : South African SP : Singapore TH : Thailand TW : Taiw an

– 2 –

CAUTION

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

This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

The following caution label is located inside the unit.

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

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Servicing Notes .......................................................................... 4

1. GENERAL .................................................................... 5

2. DISASSEMBLY .......................................................... 25

3. TEST MODE................................................................ 31

4. MECHANICAL ADJUSTMENTS ......................... 33

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down 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.

5. ELECTRICAL ADJUSTMENTS

Deck Section..................................................................... 33

Tuner Section.................................................................... 36

CD Section........................................................................ 39

6. DIAGRAMS

6-1. Printed Wiring Board –Tuner Section– ............................ 42

6-2. Schematic Diagram –Tuner Section– ............................... 45

6-3. Printed Wiring Board –CD Section– ................................ 49

6-4. Schematic Diagram –CD Section– ................................... 51

6-5. Printed Wiring Boards –CD Motor Section–.................... 53

6-6. Schematic Diagram –CD Motor Section– ........................ 55

6-7. Printed Wiring Boards –Deck Section–............................ 57

6-8. Schematic Diagram –Deck Section– ................................ 59

6-9. Schematic Diagram –Main /Power Section–.................... 63

6-10. Printed Wiring Boards –Main /Power Section–................ 67

6-11. Schematic Diagram –Panel Section–................................ 71

6-12. Printed Wiring Boards –Panel Section– ........................... 75

6-13. Printed Wiring Board –Power Amp Section– ................... 79

6-14. Schematic Diagram –Power Amp Section– ...................... 80

6-15. IC Pin Function Description ............................................. 88

7. EXPLODED VIEWS ................................................. 92

8. ELECTRICAL PARTS LIST ................................... 103

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 dam-

aged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during

repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or

unsoldering.

– 4 –

SECTION 1

GENERAL

This section is extracted from instruction manual.

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• This set can be disassembled in the order shown below.

SECTION 2

DISASSEMBLY

CASE (Page 25)

FRONT PANEL SECTION (Page 25)

CD MECHANISM DECK SECTION (Page 26)

TAPE MECHANISM DECK SECTION (Page 26)

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

CASE

two screws (case 3 TP2)

screw (case 3 TP2) (3

10)

BASE UNIT (Page 27) MAIN BOARD (Page 27)

TRAY SECTION (Page 28)

AUDIO BOARD (Page 30)

BD BOARD (Page 29)

CAPSTAN MOTOR (Page 30)

three screws (BVTT 3

screw (case 3 TP2) (3

OPTICAL PICK-UP (Page 29)

SLED MOTOR (Page 29)

Remove the case to direction of the arrow.

10)

FRONT PANEL SECTION

loading panel

screw

(BVTP 3

Pull the tray

10)

Turn the cam to direction of the

arrow

two screws (case 3 TP2)

front panel section

two claws

screw (BVTP 3

– 25 –

10)

four screws (BVTT 3

three flat wires (CN102, 205, 206)

CD MECHANISM DECK SECTION

CD mechanism deck section Note: The CD mechanism deck will

fall if three screws are removed. Support it by hand, then remove three screws.

two connectors (CN203, 204)

flat wire (CN202)

two screws (BVTP 3

T APE MECHANISM DECK SECTION

Open the cassette lids.

Push the two buttons.

tape mechanism deck section

three screws (BVTP 2.6

– 26 –

BASE UNIT

two yoke bracket

boss

base unit

MAIN BOARD

connector (CN901)

two screws (BVTP 3

four screws (BVTP 3

connector (CN105)

flat wire (CN201)

main board

IC201

– 27 –

connector (CN101)

TRAY SECTION

flat wire (CN705)

claw

flat wire

two claws

Pull the tray.

Removal the tray.

Note: When installing the tray, take care so that the collars (A) and

(B) are properly inserted into the slots.

Note: When installing the tray, pull around the flat

wire to pass through the claw as shown in the figure.

Turn the cam to direction of the arrow.

and claw B,

– 28 –

slots

collar

BD BOARD

two screws (PTPWH M2.6

two springs

screw (BVTP 2.6

Removal the four solders.

two screws (PTPWH M2.6

optical pick-up section

two springs

flat wire (CN101)

BD board

limit switch

OPTICAL PICK-UP, SLED MOTOR

sled shaft

optical pick-up

claw

sled motor

two screws (P 2

– 29 –

AUDIO BOARD

four screws (BTP 2.6

connector (CN651)

AUDIO board

two rivets

Break the soldering of two flexible flat cables.

CAPSTAN MOTOR

Break the soldering of motor lead.

Removal the capstan motor to direction of the arrow.

claw

two screws (BTP 2.6

Hang the two belts.

– 30 –

+ 69 hidden pages

SONY HCD-RX90 Service Manual

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

DISASSEMBLY

CASE

FRONT PANEL SECTION

CD MECHANISM DECK SECTION

T APE MECHANISM DECK SECTION

BASE UNIT

MAIN BOARD

TRAY SECTION

BD BOARD

OPTICAL PICK-UP, SLED MOTOR

AUDIO BOARD

CAPSTAN MOTOR