Sony HCD-EX6 - 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.

Summary

SECTION 1 SERVICING NOTES

Handling Optical Pick-up Block

Precautions for handling the optical pick-up block to prevent damage.

Laser Diode Emission Check

Unleaded Solder Information

SECTION 2 DISASSEMBLY

2-1. Side Panel Removal

2-2. Top Panel Removal

2-3. Tape Mechanism Deck Removal (HCD-EX6 T;EX8 T;EX9 T)

2-4. Front Panel Removal

2-5. Main Board Access

2-6. Back Panel Removal

2-7. CD Mechanism Removal

2-9. Base Unit Removal

2-10. BD74 Board Removal

SECTION 3 TEST MODE

Cold Reset Procedure

Clears all preset data and resets the unit to initial conditions.

Panel Test Mode Activation

Activates all panel LEDs and segments for testing.

Key Test Mode Operation

CD Tray Lock Function

CD Power Management Mode

CD Ship Mode Operation

CD Ship and Cold Reset

CD SERVO TEST MODE

Entering CD Servo Test Mode

CD Service Mode Functions

CD FACTORY MODE

SECTION 4 MECHANICAL ADJUSTMENTS

Mechanical Adjustment Precautions

Torque Measurement Procedures

Specifications and methods for measuring torque.

Tape Tension Measurement

Specifications and methods for measuring tape tension.

SECTION 5 ELECTRICAL ADJUSTMENTS

Deck Section Electrical Adjustments

Electrical adjustment reference for the deck section.

Test Tape Usage

Record;Playback Head Azimuth Adjustment

Procedure to adjust the azimuth of the record/playback heads.

CD SECTION OPERATION

Focus Bias Check

Procedure to check the focus bias of the optical pick-up.

SECTION 6 DIAGRAMS

Circuit Boards Location Map

6-1. CD;TUNER Section Block Diagram

6-2. TAPE;AUDIO Section Block Diagram

6-3. DISPLAY;POWER SUPPLY Section Block Diagram

6-4. CD Section Printed Wiring Board

6-5. CD Section Schematic Diagram

6-6. USB Section Printed Wiring Board

6-7. USB Section Schematic Diagram

6-8. PANEL Section Printed Wiring Board

6-9. PANEL Section Schematic Diagram

6-10. USB-JACK Section Printed Wiring Board

6-11. USB-JACK Section Schematic Diagram

6-12. MAIN-AMP Section Printed Wiring Boards

6-13. MAIN-AMP Section Schematic Diagram (1;2)

6-14. MAIN-AMP Section Schematic Diagram (2;2)

6-15. POWER SUPPLY Section Printed Wiring Board

6-16. POWER SUPPLY Section Schematic Diagram

6-17. TAPE DECK Section Schematic Diagram (HCD-EX6 T;EX8 T;EX9 T)

6-18. TAPE DECK Section Printed Wiring Board (HCD-EX6 T;EX8 T;EX9 T)

IC Pin Function Descriptions

USB Board IC901 Pin Functions

PANEL Board IC301 Pin Functions

PANEL Board IC301 Pin Functions (Cont.)

SECTION 7 EXPLODED VIEWS

7-1. Overall Assembly View

Exploded view of the complete unit assembly.

7-2. Front Panel Components

Exploded view of the front panel components.

7-3. Top Panel Components (HCD-EX6 T;EX8 T;EX9 T)

Exploded view of the top panel assembly for specific models.

7-4. Chassis Components

Exploded view of the chassis and main structural components.

7-5. Main Board Components

Exploded view of the main board and associated parts.

7-6. CD Mechanism Components (CDM88 CL-D1 BD74 UR)

Exploded view of the CD mechanism assembly.

SECTION 8 ELECTRICAL PARTS LIST

BD74 Board Parts List

Electrical parts list for the BD74 board.

Deck Board Parts List

Electrical parts list for the deck board.

Main-Amp Board Parts List

Electrical parts list for the main amplifier board.

Panel Board Parts List

Electrical parts list for the panel board.

PT-Power, Reg, USB Boards Parts List

Electrical parts list for PT-POWER, REG, and USB boards.

USB and USB-Jack Boards Parts List

Sony HCD-EX6 Specifications

General

Brand	Sony
Model	HCD-EX6
Category	Car Receiver
Language	English