HCD-RX77.pdf

HCD-GRX7/GRX7J/R700/

RX77/RX77S

SERVICE MANUAL

Canadian Model

HCD-RX77

AEP Model

HCD-R700/RX77/RX77S

UK Model

HCD-R700/RX77S

E Model

HCD-GRX7/GRX7J

Australian Model

HCD-GRX7

Tourist Model

HCD-GRX7J

HCD-GRX7/GRX7J/R700/RX77/RX77S

are the Amplifier, CD player, Tape Deck

and Tuner section in MHC-GRX7/

GRX7J/R700/RX77/RX77S.

Photo: HCD-RX77

Dolby noise reduction manufactured under license

from Dolby Laboratories Licensing Corporation.

“DOLBY” and the double-D symbol a are trade-

marks of Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism

HCD-H991AV

Section

CD Mechanism Type

CDM38L-5BD29AL/

CDM38LH-5BD29AL

Base Unit Type

BU-5BD29AL

Optical Pick-up Type

KSS-213D/Q-NP

TAPE

DECK

Section

Model Name Using Similar Mechanism

NEW

Tape Transport Mechanism Type

TCM-230AWR1/

230PWR1

SPECIFICATIONS

Amplifier section

Canadian model:

Continuous RMS power output (reference)

100 + 100 watts

(8 ohms at 1 kHz, 10% THD)

Total harmonic distortion less than 0.07%

(8 ohms at 1 kHz, 55 W)

Other models:

The following measured at AC 110, 220 V 50/60 Hz

DIN power output (rated) 85 + 85watts

(8 ohms at 1 kHz, DIN)

Continuous RMS power output (reference)

110 + 110 watts

(8 ohms at 1 kHz, 10% THD)

The following measured at AC 120, 240 V 50/60 Hz

DIN power output (rated) 105 + 105 watts

(8 ohms at 1 kHz, DIN)

Continuous RMS power output (reference)

130 + 130 watts

(8 ohms at 1 kHz, 10% THD)

Peak music power output (reference)

1500 watts

European and Russian models:

DIN power output (rated) 60 + 60 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference)

80 + 80 watts

(6 ohms at 1 kHz, 10% THD)

Music power output (reference)

135 + 135 watts

(6 ohms at 1 kHz, 10% THD)

– Continued on next page –

MINI Hi-Fi COMPONENT SYSTEM

MICROFILM

Specifications (continued)

Middle Eastern models:

MW:

531 - 1,602 kHz

(with the interval set at 9 kHz)

Inputs

MD/VIDEO IN:

voltage 450 mV/250mV,

SW:

5.95 - 17.90 MHz

(with the interval set at 5 kHz)

(phono jacks)

impedance 47 kilohms

MIX MIC: (phone jack)

sensitivity 1 mV, impedance 10

kilohms

Other models:

MW:

531 - 1,602 kHz

(with the interval set at 9 kHz)

530 - 1,710 kHz

(with the interval set at 10 kHz)

Outputs

MD/VIDEO OUT:

voltage 250 mV,

(phono jacks)

impedance 1 kilohms

SW:

5.95 - 17.90 MHz

(with the interval set at 5 kHz)

PHONES:

accepts headphones of 8 ohms

Antenna

AM loop antenna

(stereo phone jack)

or more

SPEAKER:

European and Russian models: accepts impedance of 6 to 16 ohms

Other models: accepts impedance of 8 to 16 ohms

SURROUND SPEAKER (Canadian model):

accepts impedance of 16 ohms

SUPER WOOFER (GRX7/GRX7J/RX77: Canadian models):

Voltage 1 V, impedance 1 kilohm

Antenna terminals

External antenna terminal

Intermediate frequency

450 kHz

General

Power requirements

Canadian model: 120 V AC, 60 Hz

European and Russian models: 230 V AC, 50/60 Hz

Mexican model:

CD player section

System

120 V AC, 50/60 Hz

Compact disc and digital audio system

Australian and Israel models:

220 - 240 V AC, 50/60 Hz

Laser

=780nm)

Emission duration: continuous

Thai model:

220 - 240 V AC, 50/60 Hz

Other models:

110 - 120 V or 220 - 240 V AC,

50/60 Hz

Laser output

Max. 44.6 mW*

*This output is the value measured at

distance of 200 mm from the objective

lens surface on the Optical Pick-up

Block with 7 mm aperture.

Power consumption

Canadian model: 195 watts

European and Russian models: 140 watts

Other models:

Frequency response

2 Hz - 20 kHz (±0.5 dB)

250 watts

Wavelength

780 -790 nm

Dimensions (w/h/d)

380 mm

(11 1 / 8 ´ 13 1 / 8 ´ 15 in.)

335

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

Mass

Canadian model: Approx. 9.5 kg (20 lbs. 15 oz.)

European and Russian models: Approx. 9.1 kg (20 lbs. 1 oz.)

Other models:

Output Level

-18 dBm

Approx. 10.2 kg (22 lbs. 8 oz.)

Supplied accessories:

AM loop antenna (1)

Remote RM-SR5 (1)

Batteries (2)

FM lead antenna (1)

Speaker cords (2)

Front speaker pads (8)

Tape player section

Recording system

4-track 2-channel stereo

Frequency response

40 - 13,000 Hz (±3 dB),

(DOLBY NR OFF)

using Sony TYPE I cassette

40 - 14,000 Hz (±3 dB),

using Sony TYPE II cassette

Tuner section

FM stereo, FM/AM superheterodyne tuner

Design and specifications are subject to change without notice.

FM tuner section

Tuning range

87.5 - 108.0 MHz

Antenna

FM lead antenna

Antenna terminals

75 ohm unbalanced

Intermediate frequency

10.7 MHz

UKV tuner section (4 band models only)

Tuning range

65.0 - 74.0 MHz

Stereo Plus

AM tuner section

Tuning range

2 Band type:

Canadian model:

530 - 1,710 kHz

(with the interval set at 10 kHz)

531 - 1,710 kHz

(with the interval set at 9 kHz)

Other model:

531 - 1,602 kHz

(with the interval set at 9 kHz)

530 - 1,710 kHz

(with the interval set at 10 kHz)

3 Band/4 Band type:

European and Russian models:

MW:

531 - 1,602 kHz

(with the interval set at 9 kHz)

LW:

153 - 279 kHz

(with the interval set at 3 kHz)

– 2 –

Semiconductor laser (

Approx. 280

TABLE OF CONTENTS

SECTION 1

SERVICING NOTES

1. SERVICING NOTES ............................................... 3

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

2. GENERAL

Location of Controls ....................................................... 6

Setting the Time .............................................................. 7

The laser diode in the optical pick-up block may suffer electro-

static 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.

3. DISASSEMBLY ......................................................... 8

4. TEST MODE .............................................................. 11

5. MECHANICAL ADJUSTMENTS ....................... 13

6. ELECTRICAL ADJUSTMENTS

DECK Section ................................................................. 13

TUNER Section .............................................................. 16

CD Section ...................................................................... 18

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 emis-

sion, observe from more than 30 cm away from the objective lens.

7. DIAGRAMS ................................................................. 20

7-1. Block Diagram – TUNER Section

(AEP, UK, German models only) – ................................ 21

7-2. Block Diagram – TUNER Section

(East European, CIS models only) – .............................. 23

7-3. Block Diagram

– CD MECHANISM DECK Section – .......................... 25

7-4. Block Diagram – TAPE DECK Section – ...................... 27

7-5. Block Diagram – MAIN Section – ................................. 29

7-6. Block Diagram – DISPLAY/KEY CONTROL/

POWER SUPPLY Section – ......................................... 31

7-7. Schematic Diagram – TUNER Section

(AEP, UK, German models only) – ................................ 35

7-8. Printed Wiring Board – TUNER Section

(AEP, UK, German models only) – ................................ 37

7-9. Printed Wiring Board – TUNER Section

(East European, CIS models only) – .............................. 38

7-10. Schematic Diagram – TUNER Section

(East European, CIS models only) – .............................. 39

7-11. Printed Wiring Board – CD Section – ........................... 41

7-12. Schematic Diagram – CD Section – ............................... 43

7-13. Printed Wiring Boards – CD MOTOR Section – .......... 45

7-14. Schematic Diagram – CD MOTOR Section – .............. 47

7-15. Printed Wiring Board – TAPE DECK Section – ........... 49

7-16. Schematic Diagram – TAPE DECK Section – .............. 51

7-17. Printed Wiring Board – LEAF SW Section – ............... 53

7-18. Schematic Diagram – LEAF SW Section – .................. 53

7-19. Printed Wiring Board – MAIN Section – ...................... 55

7-20. Schematic Diagram – MAIN Section (1/4) – ............... 57

7-21. Schematic Diagram – MAIN Section (2/4) – ................ 59

7-22. Schematic Diagram – MAIN Section (3/4) – ................ 61

7-23. Schematic Diagram – MAIN Section (4/4) – ................ 63

7-24. Printed Wiring Board – PANEL Section – .................... 65

7-25. Schematic Diagram – PANEL Section – ....................... 67

7-26. Printed Wiring Board – CD-SW Section – .................... 69

7-27. Schematic Diagram – CD-SW Section – ...................... 69

7-28. Printed Wiring Board – HP Section – ........................... 71

7-29. Schematic Diagram – HP Section – .............................. 71

7-30. Printed Wiring Board – POWER AMP Section – ......... 72

7-31. Schematic Diagram – POWER AMP Section – ............ 73

7-32. Printed Wiring Board

– TRANSFORMER Section – ........................................ 75

7-33. Schematic Diagram

– TRANSFORMER Section – ........................................ 76

7-34. IC Pin Function Description ........................................... 82

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 dur-

ing 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.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation 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.

CAUTION : INVISIBLE LASER RADIATION WHEN OPEN AND

INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.

ADVARSEL : USYNLIG LASERSTRÅLING VED ÅBNING NÅR

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE

FOR STRÅLING.

VORSICHT : UNSICHTBARE LASERSTRAHLUNG, WENN

ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG

ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.

VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-

TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.

VARNING : OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD

OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.

ADVERSEL : USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG

SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.

VIGYAZAT! : A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-

GÁRVESZÉLY ! KERÜLJE A BESUGÁRZÁST !

8. EXPLODED VIEWS ................................................ 87

9. ELECTRICAL PARTS LIST ............................... 96

– 3 –

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 PUB-

LISHED BY SONY.

MODEL IDENTIFICATION

– Back Panel –

PART No.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !

SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE

DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ

DE FONCTIONNEMENT. NE REMPLACER CES COM-

POSANTS QUE PAR DES PIÈCES SONY DONT LES

NUMÉROS SONT DONNÉS DANS CE MANUEL OU

DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

MODEL

PART No.

Canadian model

4-996-843-0¹

Israel and Thai models

4-996-843-6¹

E model

4-996-844-0¹

Malaysia, Singapore and

4-996-844-1¹

South African models

GRX7: Saudi Arabia and Taiwan models

4-996-844-2¹

Hong Kong model

4-996-844-3¹

Australian model

4-996-844-4¹

Mexican model

4-996-844-5¹

Indonesian model

4-996-844-7¹

GRX7J

4-996-844-8¹

RX77S: UK model

4-996-845-0¹

RX77S: East European and CIS model

4-996-845-1¹

R700

4-996-845-2¹

RX77: AEP and German model

4-996-845-3¹

RX77: East European model

4-996-845-4¹

– 4 –

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.

1 Remove the Case.

3 Pull-out the disc tray.

2 Turn the cam to the

direction of arrow.

NOTE FOR INSTALLATION (ROTARY ENCODER)

BU cam

Note :When attaching the Base unit, Insert the

section A into the groove of BU cam.

Groove

Section A

Note:When attaching the BU cam,

engage the Rotary encoder

switch as shown in the figure.

– 5 –

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