Sony HCD-EX8 Service 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.

Sony HCD-EX8 Specifications

General

Brand	Sony
Model	HCD-EX8
Category	Car Receiver
Language	English

Summary

SPECIFICATIONS

Amplifier Section Specifications

Details power output, RMS output power, and input/output specifications for various models.

CD Section Specifications

Covers sampling frequencies, USB port capabilities, and CD player system parameters.

Tape Deck Section Specifications

Outlines recording system and tape transport mechanism types for specific models.

SERVICING NOTES

Handling Optical Pick-Up Block and Base Unit

Precautions for handling the optical pick-up block and base unit to prevent electrostatic damage.

Laser Diode Emission Check Procedure

Guidelines for safely checking the laser diode emission on the optical pick-up block.

Unleaded Solder Handling and Characteristics

Information on characteristics and handling of unleaded solder used in components.

Disc Tray Lock Release Procedure

Procedure to release the disc tray lock function for antitheft purposes.

DISASSEMBLY PROCEDURES

Side Panel Removal Instructions

Step-by-step instructions for removing the left and right side panels.

Top Panel Section Disassembly Guide

Procedure for disassembling the top panel section of the unit.

Front Panel Section Disassembly Steps

Detailed steps for removing and disassembling the front panel section.

Main Board Access and Removal

Instructions on how to access and remove the main board assembly.

TEST MODES

Cold Reset Procedure

Steps to perform a cold reset, clearing all stored data to initial conditions.

Panel Test Mode Entry and Operation

How to enter the panel test mode, activating all LEDs and display segments.

CD Tray Lock Mode Activation

Procedure to activate the CD tray lock mode for antitheft in shops.

CD Ship Mode Operation Guide

Instructions for entering CD ship mode to move the CD sled motor optionally.

ADJUSTMENTS

Mechanical Adjustments: Torque and Tension Measurement

Procedures for torque measurement and tape tension measurement.

Electrical Adjustments: Deck and Azimuth Alignment

Details on deck section adjustments and head azimuth alignment.

DIAGRAMS AND SCHEMATICS

Circuit Boards Location Overview

Diagram showing the physical layout of the main circuit boards within the unit.

Block Diagram - CD/Tuner Section

Functional block diagram illustrating the CD and tuner signal paths.

Schematic Diagram - CD Section

Detailed schematic circuit diagram for the CD section.

Schematic Diagram - Power Supply Section

Circuit schematic for the power supply section, including transformers and regulators.

EXPLODED VIEWS

Overall Exploded View of Unit

Exploded view showing the main assemblies and their interconnections.

Front Panel Exploded View

Detailed exploded view of the front panel components and assembly.

Top Panel Exploded View

Exploded view illustrating the top panel and its associated parts.

Chassis Section Exploded View

Exploded view of the main chassis structure and associated boards.

ELECTRICAL PARTS LIST

BD74 Board Electrical Components

List of capacitors, resistors, transistors, and connectors for the BD74 board.

Main Amplifier Board Electrical Components

Comprehensive list of components for the main amplifier board.

Panel Board Electrical Components

Parts list for the panel board, including switches, diodes, and connectors.

PT-POWER, REG, USB Board Components

Electrical components for the PT-POWER, REG, and USB boards.