Sony HCD-EX88 Service Manual

SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
HCD-EX66/EX88/EX99
9-893-153-01
2011C04-1
©
2011.03
E Model
Ver. 1.0 2011.03
• HCD-EX66 is the amplifi er, USB, CD player
and tuner section in MHC-EX66.
• HCD-EX88 is the amplifi er, USB, CD player
and tuner section in MHC-EX88.
• HCD-EX99 is the amplifi er, USB, CD player
and tuner section in MHC-EX99.
COMPACT DISC RECEIVER
CD Section
Model Name Using Similar Mechanism New
Mechanism Type CDM76B-D1BD76
Optical Pick-up Block Name DA11MMVGP
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 230 V,
50/60 Hz (Other models)
HCD-EX99
Front Speaker:
Power output (rated):
80 W + 80 W (at 3 Ω, 1 kHz, 1% THD)
RMS output power (reference):
135 W + 135 W (per channel at 3 Ω,
1 kHz)
Subwoofer:
RMS output power (reference):
200 W (at 8 Ω, 100 Hz)
HCD-EX88
Power output (rated):
120 W + 120 W (at 4 Ω, 1 kHz, 1% THD)
RMS output power (reference):
200 W + 200 W (per channel at 4 Ω,
1 kHz)
HCD-EX66
Power output (rated):
50 W + 50 W (at 4 Ω, 1 kHz, 1%
THD)
RMS output power (reference):
90 W + 90 W (per channel at 4 Ω,
1 kHz)
Inputs
DVD/PC IN L/R (phono jacks):
Sensitivity 700 mV, impedance
22 kΩ
Outputs
PHONES (stereo mini jack):
accepts headphones with an
impedance of 8 Ω or more
SPEAKERS: impedance
HCD-EX99: impedance 3 Ω
HCD-EX88/EX66: impedance 4 Ω
SUBWOOFER (HCD-EX99 only):
impedance 8 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
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:
200/250/300/350/400 kHz
Photo: HCD-EX99
• MPEG Layer-3 audio coding technology and patents licensed from
Fraunhofer IIS and Thomson.
• Windows Media is either a registered trademark or trademark of Microsoft
Corporation in the United States and/orother countries.
• This product contains technology subject to certain intellectual property
rights of Microsoft. Use or distribution of this technology outside of this
product is prohibited without the appropriate license(s) from Microsoft.
– Continued on next page –

Sony HCD-EX88 Specifications

General

Brand	Sony
Model	HCD-EX88
Category	Stereo System
Language	English

Summary

Service Manual

Specifications

Details operational parameters for CD, amplifier, USB, and tuner sections.

General Information and Precautions

Safety and Repair Notes

Important warnings for component replacement and circuit board repair.

Servicing and Diagrams Overview

Disassembly Procedures

Step-by-step guide for disassembling the unit into major sections.

System Diagrams and Parts Lists

Block diagrams, schematics, PWB layouts, and electrical parts lists.

Servicing Notes and Model Identification

Handling Precautions

Essential notes for handling optical pick-up, laser diode, and unleaded solder.

Model Identification

Information on identifying different model variations based on labels.

Maintenance Procedures and Safety

Electric Shock Prevention

Crucial steps for discharging capacitors on the AMP SMPS board.

Optical Unit Installation Precautions

OP Unit Installation and Solder Bridge Removal

Guidelines for installing a new optical unit and handling static prevention solder bridges.

Section 2: Disassembly Overview

Disassembly Flowchart

A visual guide showing the sequence of disassembling major units like cases, panels, and decks.

Disassembly Steps 2-1 & 2-2

Side Case and Top Panel Removal

Instructions for removing side cases and the top panel using screws and claws.

Disassembly Step 2-5

Back Panel Section Removal

Instructions for removing the back panel section, involving covers and wires.

Disassembly Step 2-6

AMP SMPS Board Removal

Detailed steps for removing the AMP SMPS board, including connections and brackets.

Section 3: Test Modes

Panel Test Mode Operations

Activates LEDs and display segments; includes version and key test modes.

CD Tray Lock and Ship Modes

Procedures for locking the CD tray and entering CD ship mode for maintenance.

Section 4: Electrical Adjustments

CD and Tuner Section Adjustments

Guidelines for focus bias check (CD) and FM auto stop check (Tuner).

Section 5: Diagrams - CD Section

IC Block Diagrams

IC Block Diagrams (Continued)

IC Pin Function Descriptions

BD76 Board USB Controller IC Pinout

Detailed pin functions for the USB controller IC (IC901) on the BD76 board.

IC Pin Function Descriptions (Continued)

Panel Board System Control IC Pinout

Pin functions for the System Control IC (IC302) on the Panel board.

Panel Board System Control IC Pinout (Part 2)

Additional pin functions for the System Control IC (IC302) on the Panel board.

Section 6: Exploded Views

Overall Unit Exploded View

An exploded view of the entire unit, showing major external and internal parts.

Section 7: Electrical Parts List

AMP SMPS (EX66) Parts List

Detailed list of capacitors, coils, resistors, semiconductors, and connectors for the EX66 AMP SMPS board.

Electrical Parts List - AMP SMPS (EX66)

AMP SMPS (EX66) Component Details

Continuation of the parts list for EX66 AMP SMPS, including ICs, transistors, and jumpers.

Electrical Parts List - AMP SMPS (EX66) (Continued)

AMP SMPS (EX66) Resistors and Components

Lists resistors, transformers, terminal boards, thermistors, and varistors for the EX66 AMP SMPS.

Electrical Parts List - AMP SMPS (EX66) / AMP SMPS (EX88)

AMP SMPS (EX66) Capacitors and Connectors

Lists capacitors, connectors, diodes, and jumper resistors for the EX66 AMP SMPS.

AMP SMPS (EX88) Capacitors and Connectors

Lists capacitors, connectors, diodes, and thermistors for the EX88 AMP SMPS.

Electrical Parts List - AMP SMPS (EX88)

AMP SMPS (EX88) Transistors and Resistors

Electrical Parts List - AMP SMPS (EX88) / AMP SMPS (EX99)

AMP SMPS (EX88) Resistors and Components

Electrical Parts List - AMP SMPS (EX99)

AMP SMPS (EX99) Capacitors and Diodes

Electrical Parts List - AMP SMPS (EX99) (Continued)

AMP SMPS (EX99) Resistors and Components

Electrical Parts List - AMP SMPS (EX99) / BD76

AMP SMPS (EX99) Capacitors and Connectors

BD76 Board Capacitors and Connectors

Electrical Parts List - PANEL / REGULATOR (EX88)

PANEL Board Components

Electrical Parts List - EFX-MODULE / PANEL

EFX-MODULE PANEL Components

Electrical Parts List - PANEL (Continued)

PANEL Board Capacitors and Diodes

PANEL ICs, Transistors, and Resistors

PANEL Board Resistors

Electrical Parts List - REGULATOR (EX88) / REGULATOR (EX99)

Electrical Parts List - REGULATOR (EX88) / REGULATOR (EX99) (Continued)

REGULATOR (EX88) Components

Electrical Parts List - REGULATOR (EX99) / TUNER

REGULATOR (EX99) Components

TUNER BOARD Components