Sony HCD RX80 Service Manual

SERVICE MANUAL

HCD-RX80 is the tuner, deck, CD and amplifier section in MHC-RX80.

HCD-RX80

AEP Model

UK Model

* 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.

Amplifier section

DIN power output 40 + 40 watts

(6 ohms, at 1 kHz, DIN)

Continuous RMS power output

55 + 55 watts (6 ohms at 1 kHz, 10 % THD)

Music power output 95 + 95 watts

(6 ohms at 1 kHz, 10% THD)

Inputs VIDEO/MD IN (phono

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

Outputs VIDEO/MD OUT (phono

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

Model Name Using Similar Mechanism HCD-RX70

CD Section

Tape deck Section

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

SPECIFICATIONS

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 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

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.

MINI Hi-Fi COMPONENT SYSTEM

CDM38L-5BD29AL

KSS-213D/Q-NP

Similar Mechanism HCD-H881

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

cassette 60 – 14,000 Hz (± 3dB), 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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MICROFILM

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range AEP, UK, G, AED: 87.5 – l08.0 MHz

(50 kHz step)

EE, CIS: 65.0 – 74.0 MHz (10 kHz step)

87.5 – 108.0 MHz

(50 kHz step) Aerial FM Lead aerial Aerial terminals 75 ohms unbalanced Intermediate frequency 10.7 MHz

UKV tuner section (EE, CIS)

Tuning range 65.0 – 74.0 MHz

(10 kHz step)

Polar Stereo

AM tuner section

Tuning range MW: 531 – 1,602 kHz

(with interval set at 9 kHz)

LW: 153 – 279 kHz

(with interval set at 3 kHz) Aerial AM loop aerial

External aerial terminal Intermediate frequency 450 kHz

General

Power requirements 220 – 230 V AC, 50/60 Hz Power consumption 130 watts Dimension (w/h/d) Approx. 280 × 330 × 366 mm Mass Approx. 8.1 kg Supplied accessories: AM loop aerial (1)

Remote RM-SD70 (1)

Sony SUM-3 (NS)

batteries (2)

FM lead aerial (1)

Speaker cords (4)

MODEL IDENTIFICATION

– BACK PANEL –

PARTS No.

MODEL PARTS NO. AEP, UK, G, AED model 4-986-844-5π EE, CIS model 4-986-844-6π

• Abbreviation AED : Northern European model G : German model EE : East European model

Design and specifications are subject to change without notice.

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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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TABLE OF CONTENTS

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

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

2. DISASSEMBLY .......................................................... 22

3. TEST MODE ............................................................... 28

4. MECHANICAL ADJUSTMENTS .......................... 30

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...................................................................... 30

Tuner Section..................................................................... 33

CD Section......................................................................... 35

6. DIAGRAMS

6-1. Printed Wiring Board –TUNER Section– ......................... 38

6-2. Schematic Diagram –TUNER Section– ............................ 40

6-3. Printed Wiring Board –CD Section– ................................. 43

6-4. Schematic Diagram –CD Section– .................................... 45

6-5. Printed Wiring Boards –CD MOTOR Section– ................ 47

6-6. Schematic Diagram –CD MOTOR Section–..................... 49

6-7. Printed Wiring Boards –DECK Section– .......................... 51

6-8. Schematic Diagram –DECK Section–............................... 53

6-9. Schematic Diagram –MAIN/POWER Section–................ 57

6-10. Printed Wiring Boards –MAIN/POWER Section–............ 61

6-11. Schematic Diagram –PANEL Section– ............................. 65

6-12. Printed Wiring Boards –PANEL Section– ......................... 69

6-13. Printed Wiring Board –POWER AMP Section– ............... 73

6-14. Schematic Diagram –POWER AMP Section– .................. 74

6-15. IC Pin Function Description .............................................. 82

7. EXPLODED VIEWS .................................................. 86

8. ELECTRICAL PARTS LIST .................................... 94

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.

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SECTION 1

GENERAL

This section is extracted from instruction manual.

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

CASE (Page 22)

FRONT PANEL SECTION (Page 22)

CD MECHANISM DECK SECTION (Page 23)

SECTION 2

DISASSEMBLY

BASE UNIT (Page 24) MAIN BOARD (Page 24)

TRAY SECTION (Page 25)

BD BOARD (Page 26)

OPTICAL PICK-UP (Page 26)

SLED MOTOR (Page 26)

TAPE MECHANISM DECK SECTION (Page 23)

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

CASE

two screws (case 3 TP2) (3 × 8)

screw (case 3 TP2) (3 × 10)

AUDIO BOARD (Page 27)

CAPSTAN MOTOR (Page 27)

three screws (BVTT 3 × 6)

screw (case 3 TP2) (3 × 10)

two screws (case 3 TP2) (3 × 8)

Remove the case to direction of the arrow.

FRONT PANEL SECTION

loading panel

screw (BVTP 3 × 10)

Pull the tray

front panel section

two claws

screw (BVTP 3 × 10)

Turn the cam to direction of the arrow A.

four screws (BVTT 3 × 6)

three flat wires (CN102, 205, 206)

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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)

two screws (BVTP 3 × 8)

flat wire (CN202)

T APE MECHANISM DECK SECTION

Open the cassette lids.

tape mechanism deck section

three screws (BVTP 2.6 × 8)

Push the two buttons.

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BASE UNIT

two yoke bracket

boss

base unit

MAIN BOARD

connector (CN901)

two screws (BVTP 3 × 8)

four screws (BVTP 3 × 8)

flat wire (CN201)

main board

IC201

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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 A and claw B, as shown in the figure.

Turn the cam to direction of the arrow.

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slots

collar

BD BOARD

two screws (PTPWH M2.6 × 6)

screw (BVTP 2.6 × 8)

two springs

Removal the four solders.

two screws (PTPWH M2.6 × 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 × 3)

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AUDIO BOARD

four screws (BTP 2.6 × 4)

AUDIO board

connector (CN651)

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 × 8)

Hang the two belts.

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+ 63 hidden pages