Sony HCD-EX8T - User Manual

SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
HCD-EX6/EX6T/EX8/
EX8T/EX9/EX9T
9-889-803-02
2010L04-1
©
2010.12
E Model
Ver. 1.1 2010.12
• HCD-EX6 is the amplifi er, USB, CD player
and tuner section in MHC-EX6.
• HCD-EX6T is the amplifi er, USB, CD player,
tape deck and tuner section in MHC-EX6T.
• HCD-EX8 is the amplifi er, USB, CD player
and tuner section in MHC-EX8.
• HCD-EX8T is the amplifi er, USB, CD player,
tape deck and tuner section in MHC-EX8T.
• HCD-EX9 is the amplifi er, USB, CD player
and tuner section in MHC-EX9.
• HCD-EX9T is the amplifi er, USB, CD player,
tape deck and tuner section in MHC-EX9T.
HCD-EX6/EX8/EX9
COMPACT DISC RECEIVER
HCD-EX6T/EX8T/EX9T
COMPACT DISC DECK RECEIVER
CD Section
Model Name Using Similar Mechanism New
Mechanism Type CDM88CL-D1BD74UR
Optical Pick-up Block Name DA11MMVGP
Tape Deck Section
(HCD-EX6T/EX8T/EX9T)
Model Name Using Similar Mechanism HCD-EC69T/EC79T/EC99T
Tape Transport Mechanism Type TCM-J1 or CS-21SC-901TP
SPECIFICATIONS
Amplifi er section
The following measured at AC 127 V,
60 Hz (Mexican model)
The following measured at AC 220 V,
50/60 Hz (Argentine model)
The following measured at AC 120 V,
220 V, 240 V, 50/60 Hz (Other models)
HCD-EX9/EX9T
Front Speaker:
Power output (rated):
Low channel
40 W + 40 W (at 8 Ω, 1 kHz, 1%
THD)
High channel
40 W + 40 W (at 8 Ω, 1 kHz, 1%
THD)
RMS output power (reference):
Low channel
85 W + 85 W (per channel at 8 Ω,
1 kHz)
High channel
85 W + 85 W (per channel at 8 Ω,
1 kHz)
Subwoofer:
RMS output power (reference):
125 W (at 4 Ω, 80 Hz)
HCD-EX8/EX8T
Power output (rated):
Low channel
50 W + 50 W (at 8 Ω, 1 kHz, 1%
THD)
High channel
50 W + 50 W (at 8 Ω, 1 kHz, 1%
THD)
RMS output power (reference):
Low channel
100 W + 100 W (per channel at 8 Ω,
1 kHz)
High channel
100 W + 100 W (per channel at 8 Ω,
1 kHz)
HCD-EX6/EX6T
Power output (rated):
40 W + 40 W (at 6 Ω, 1 kHz, 1%
THD)
RMS output power (reference):
90 W + 90 W (per channel at 6 Ω,
1 kHz)
Inputs
PC IN (stereo mini jack):
Sensitivity 800 mV, impedance
22 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones with an
impedance of 8 Ω or more
SPEAKERS: impedance
HCD-EX9/EX9T/EX8/EX8T: 8 Ω
HCD-EX6/EX6T: 6 Ω
SUBWOOFER (HCD-EX9/EX9T only):
impedance 4 Ω
USB section
Supported bit rate:
MP3 (MPEG 1 Audio Layer-3):
32 kbps – 320 kbps, VBR
WMA: 48 kbps – 192 kbps
AAC: 48 kbps – 320 kbps
Sampling frequencies:
MP3 (MPEG 1 Audio Layer-3):
32/44.1/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
(USB) port:
Maximum current:
500 mA
CD player section
System:
Compact disc and digital audio
system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6μW
* This output is the value
measurement at a distance of
200mm from the objective lens
surface on the Optical Pick-up
Block with 7mm aperture.
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 88 dB
Tape deck section (HCD-EX9T/
EX8T/EX6T only)
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
FM tuner section:
Tuning range:
87.5 MHz ‒ 108.0 MHz (50 kHz step)
Intermediate frequency: 225 kHz
AM tuner section:
Tuning range
Latin American models:
530 kHz ‒ 1,710 kHz (10 kHz step)
531 kHz ‒ 1,710 kHz (9 kHz step)
Other models:
531 kHz ‒ 1,602 kHz (9 kHz step)
530 kHz ‒ 1,610 kHz (10 kHz step)
Intermediate frequency: 53 kHz
– Continued on next page –
Photo: HCD-EX9T
• MPEG Layer-3 audio coding technology and pat-
ents licensed from Fraunhofer IIS and Thomson.
• Windows Media is a registered trademark of
Microsoft Corporation in the United States and/or
other countries.

Summary

Servicing Notes

Handling Precautions and Model Identification

Guidelines for handling sensitive components, checking laser diodes, and identifying unit models.

Unleaded Solder Information

Characteristics and handling precautions for unleaded solder.

Releasing Disc Tray Lock

Procedure to unlock the CD disc tray for servicing.

Disassembly Procedures

External Component Removal

Steps for removing side panels, top panel, and front panel sections.

Internal Component Removal

Procedure for removing tape mechanism, CD mechanism, and circuit boards.

Chassis and Base Unit Removal

Instructions for removing the chassis, base unit, and related components.

Test Modes

Basic System Test Modes

Includes Cold Reset, Panel Test, and CD playback modes.

Advanced Operational Modes

Covers CD Servo, Service, Factory, and CD Ship modes.

Adjustments

Mechanical Adjustments

Covers precautions, torque, and tape tension measurements.

Electrical Adjustments

Procedure for record/playback head azimuth adjustment.

Section Operations

CD Section Operations

Notes and focus bias check for the CD playback system.

Tuner Section Operations

Procedure for FM auto stop check.

Diagrams and Waveforms

Circuit Board Locations

Illustrates the placement of various circuit boards.

Diagram Conventions and Abbreviations

Explains symbols, notes for PWB/schematics, and abbreviations.

Waveform Analysis

Shows example waveforms for different ICs on various boards.

Block Diagrams

CD;Tuner Section Block Diagram

Block diagram of the CD and Tuner sections.

Tape;Audio Section Block Diagram

Block diagram of the Tape and Audio sections.

Display;Power Supply Section Block Diagram

Block diagram of the Display and Power Supply sections.

Printed Wiring Boards

CD Section PWB Layout

Component layout for the BD74 board (Sides A and B).

USB Section PWB Layout

Component layout for the USB board (Sides A and B).

Panel Section PWB Layout

Component layout for the Panel board.

USB-JACK Section PWB Layout

Component layout for the USB-JACK board.

MAIN-AMP Section PWB Layout

Component layout for the MAIN-AMP board.

Power Supply Section PWB Layout

Component layout for the PT-POWER board.

Tape Deck Section PWB Layout

Component layout for the DECK board.

Schematic Diagrams

CD Section Schematic

Electrical schematic for the BD74 board.

USB Section Schematic

Electrical schematic for the USB board.

Panel Section Schematic

Electrical schematic for the Panel board.

USB-JACK Section Schematic

Electrical schematic for the USB-JACK board.

MAIN-AMP Section Schematics (1;2)

Electrical schematic for the MAIN-AMP board, part one.

MAIN-AMP Section Schematics (2;2)

Electrical schematic for the MAIN-AMP board, part two.

Power Supply Section Schematic

Electrical schematic for the PT-POWER board.

Tape Deck Section Schematic

Electrical schematic for the DECK board.

Integrated Circuit Diagrams

IC101 (BD74 Board) Block Diagram

Block diagram for the IC101 chip on the BD74 board.

IC301 (BD74 Board) Block Diagram

Block diagram for the IC301 chip on the BD74 board.

IC101 (MAIN-AMP Board) Block Diagram

Block diagram for the IC101 chip on the MAIN-AMP board.

IC102 (MAIN-AMP Board) Block Diagram

Block diagram for the IC102 chip on the MAIN-AMP board.

IC801 (MAIN-AMP Board) Block Diagram

Block diagram for the IC801 chip on the MAIN-AMP board.

IC201;IC202 (MAIN-AMP Board) Block Diagrams

Block diagrams for IC201 and IC202 on the MAIN-AMP board.

IC601;IC050 Block Diagrams

Block diagrams for IC601 and IC050 on respective boards.

IC Pin Function Descriptions

USB Controller (IC901) Pin Functions

Detailed pin functions for the USB controller IC901.

System Controller (IC301) Pin Functions

Detailed pin functions for the system controller IC301.

Exploded Views

Overall Unit Assembly

Exploded view of the complete unit assembly.

Front Panel Assembly Components

Exploded view of the front panel assembly.

Top Panel Assembly Components

Exploded view of the top panel assembly.

Chassis Assembly Components

Exploded view of the chassis and related parts.

Main Board Assembly Components

Exploded view of the main board and associated transformers.

CD Mechanism Assembly Components

Exploded view of the CD mechanism unit.

Electrical Parts List

BD74 Board Parts List

List of electrical components for the BD74 board.

MAIN-AMP Board Parts List

List of electrical components for the MAIN-AMP board.

Component Abbreviations

Explanation of abbreviations used in the parts list.

Revision History

Document Revision Details

Details changes made in the manual's revision history.

Sony HCD-EX8T Specifications

General

Brand	Sony
Model	HCD-EX8T
Category	Car Receiver
Language	English