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DIN power output (rated):  
60 + 60 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output 
(reference): 75 + 75 watts (4 ohms at 
1 kHz, 10% THD)

Inputs:

AUDIO IN (stereo mini jack): 
voltage 250 mV, impedance 47 
kilohms

 (USB) port: Type A, maximum 

current 500 mA

Outputs:

PHONES (stereo mini jack): accepts 
headphones of 8 ohms or more
SPEAKER: accepts impedance of 
4 ohms

Communication system:

Bluetooth Standard version 2.0

Output:

Bluetooth Standard Power Class 2

Maximum communication range:

Line of sight approx. 10 m

1)

Frequency band:

2.4 GHz band (2.4000 GHz –  
2.4835 GHz)

Modulation method:

FHSS

Compatible Bluetooth proles

2)

:

A2DP (Advanced Audio Distribution 
Profile)
AVRCP (Audio Video Remote 
Control Profile) 

Supported codecs:

Receive: SBC (Sub Band Codec), MP3
Transmit: SBC (Sub Band Codec)

1)

  The actual range will vary depending on 

factors such as obstacles between devices, 
magnetic fields around a microwave oven, 
static electricity, reception sensitivity, 
antenna’s performance, operating system, 
software application, etc.

2)

  Bluetooth standard proles indicate the 

purpose of Bluetooth communication 
between devices.

Supported bit rate

MP3 (MPEG 1 Audio Layer-3): 
32 – 320 kbps, VBR
ATRAC: 48 – 352 kbps 
(ATRAC3plus), 66/105/132 kbps 
(ATRAC3)
WMA: 32 – 192 kbps, VBR
AAC: 48 – 320 kbps

Sampling frequencies

MP3 (MPEG 1 Audio Layer-3): 
32/44.1/48 kHz
ATRAC: 44.1 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz

System: Compact disc and digital audio 
system
Laser Diode Properties

Emission duration: continuous
Laser Output*: Less than 44.6

µW

* This is 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 90 dB

FM stereo, FM/AM superheterodyne tuner

FM tuner section:

Tuning range

US, Canadian models: 87.5 – 108.0 MHz 
(100 kHz step)
Other models: 87.5 – 108.0 MHz 
(50 kHz step)

Antenna: FM lead antenna
Antenna terminals: 75 ohms unbalanced
Intermediate frequency: 10.7 MHz

AUDIO POWER SPECIFICATIONS

– HCD-HX7 –

– HCD-HX7 –

– HCD-HX5 –

– HCD-HX3 –

POWER OUTPUT AND TOTAL 
HARMONIC DISTORTION:
(The United States model only)
With 6 ohm loads, both channels driven, 
from 120 – 10,000 Hz; rated 50 watts per 
channel minimum RMS power, with no 
more than 10% total harmonic distortion 
from 250 milliwatts to rated output.

Continuous RMS power output 
(reference): 50 + 50 watts (6 ohms at 
1 kHz, 10% THD)

Inputs:

AUDIO IN (stereo mini jack): 
voltage 250 mV, impedance 47 
kilohms

Outputs:

PHONES (stereo mini jack): accepts 

Canadian, Australian, Korean models:

European model:

headphones of 8 ohms or more
SPEAKER: accepts impedance of 
6 ohms

DIN power output (rated):  
60 + 60 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output 
(reference): 75 + 75 watts (4 ohms at 
1 kHz, 10% THD)
Music power output (reference): 
75 + 75 watts (4 ohms at 1 kHz, 10% 
THD)

Canadian model:

DIN power output (rated): 40 + 40 
watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output 
(reference): 50 + 50 watts (6 ohms at 
1 kHz, 10% THD)

European model:

DIN power output (rated): 40 + 40 
watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output 
(reference): 50 + 50 watts (6 ohms at 
1 kHz, 10% THD)
Music power output (reference): 50 + 
50 watts (6 ohms at 1 kHz, 10% THD)

Inputs:

AUDIO IN (stereo mini jack): 
voltage 250 mV, impedance 
47 kilohms

 (USB) port: Type A, maximum 

current 500 mA

Outputs:

PHONES (stereo mini jack): accepts 
headphones of 8 ohms or more
SPEAKER: accepts impedance of 
6 ohms

Model Name Using Similar Mechanism

NEW

Base Unit Name HCD-HX7

BU-K6BD90-WOD

HCD-HX3: CND, AEP/HX5

BU-K6BD90U-WOD

HCD-HX3: E, E51, MX, AR, RU BU-K6BD91UR-WOD

Optical Pick-Up Block Name

KSM-213DCP

2007G05-1
© 2007.07

•

HCD-HX3 (Canadian and AEP models) is the
amplifier, USB, CD player and tuner section
in CMT-HX3.

•

HCD-HX3 (E, Mexican, Chilean, Peruvian,
Argentina and Russian models) is the
amplifier, USB, CD player and tuner section
in CMT-HX3R.

•

HCD-HX5 is the amplifier, bluetooth, USB,
CD player and tuner section in CMT-HX5BT.

•

HCD-HX7 is the amplifier, bluetooth, CD
player and tuner section in CMT-HX7BT.

Note: Refer to supplement-2 for HCD-HX3 of

CMT-HX3R.

Photo: HCD-HX3

(for CMT-HX3)

US Model

HCD-HX7

Canadian Model

AEP Model

E Model

HCD-HX3/HX5

UK Model

Australian Model

HCD-HX5

– Continued on next page –

• The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. 

and any use of such marks by Sony Corporation is under license. Other 
trademarks and trade names are those of their respective owners.

• “WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.

• MICROVAULT is a trademark of Sony Corporation.

• ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks of Sony Corporation.

• U.S. and foreign patents licensed from Dolby Laboratories.

• MPEG Layer-3 audio coding technology and patents licensed from 

Fraunhofer IIS and Thomson.

• The XM name and related logos are registered trademarks of XM Satellite Radio Inc.

• (c) 2006 SIRIUS Satellite Radio Inc. “SIRIUS” and the SIRIUS dog logo 

are registered trademarks of SIRIUS Satellite Radio Inc.

TM

®

•     and   marks are omitted in this manual.

• Abbreviation

AR

: Argentina model

CND : Canadian model
E51

: Chilean and Peruvian models

MX

: Mexican model

RU

: Russian model

2

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

• 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.

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

 0

0

0

After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.

The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable.  (See
Fig. A)

1.5 k

Ω

0.15 

µ

F

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

This is appliance is classied as a CLASS 1 
LASER product. This is marking is located 
on the rear exterior.

AM tuner section:

Tuning range

US, Canadian models:
530 – 1,710 kHz (with 10 kHz tuning 
interval)
531 – 1,710 kHz (with 9 kHz tuning 
interval)

Other models:
530 – 1,710 kHz (with 10 kHz tuning 
interval)

European model:
531 – 1,602 kHz (with 9 kHz tuning 
interval)

531 – 1,602 kHz (with 9 kHz tuning 
interval)

Antenna: AM loop antenna, external 
antenna terminal
Intermediate frequency: 450 kHz

Power requirements

US, Canadian models: 120 V AC, 60 Hz
Other models: 220 – 240 V AC, 
50/60 Hz

Power consumption: 40 watts (HCD-HX3/HX7)

50 watts (HCD-HX5)

Dimensions (w/h/d) (excl. speakers): 
Approx. 285 

× 120 × 215 mm

Mass (excl. speakers): 2.6 kg (HCD-HX3/HX7)

2.7 kg (HCD-HX5)

Design and specications are subject to 
change without notice.

3

...............................................

4

...................................................................

5

3-1.

Disassembly Flow ...........................................................

9

3-2.

Panel (Top) ...................................................................... 10

3-3.

Front Panel Block ............................................................ 10

3-4.

MAIN Board (HX3/HX5) ............................................... 11

3-5.

MAIN Board/XM Board (HX7) ...................................... 11

3-6.

Switching Power Board/Sub Power Board ...................... 12

3-7.

D. C. FAN (50 Square) (HX5: Singapore model) ........... 12

3-8.

Loading Mechanism Block ............................................. 13

3-9.

Base Unit ......................................................................... 13

3-10. BELT ............................................................................... 14
3-11. OP Base Assy (KSM-213D) ............................................ 14

.............................................................. 15

........................................ 17

6-1.

Block Diagram – CD SERVO Section – ......................... 18

6-2.

Block Diagram
– TUNER/USB/BLUETOOTH Section – ....................... 19

6-3.

Block Diagram – MAIN Section – .................................. 20

6-4.

Block Diagram – AMP Section – .................................... 21

6-5.

Block Diagram
– PANEL/POWER SUPPLY Section – ........................... 22

6-6.

Printed Wiring Boards – CD Section – ........................... 24

6-7.

Schematic Diagram  – CD Section – ............................... 25

6-8.

Printed Wiring Boards – USB Section (HX3/HX5) – ..... 26

6-9.

Schematic Diagram – USB Section (HX3/HX5) – ......... 27

6-10. Printed Wiring Boards

– BLUETOOTH Section (HX5/HX7) – .......................... 28

6-11. Schematic Diagram

– BLUETOOTH Section (HX5/HX7) – .......................... 29

6-12. Printed Wiring Boards – XM Section (HX7) – ............... 30
6-13. Schematic Diagram – XM Section (HX7) – ................... 31
6-14. Printed Wiring Board – MAIN Section – ........................ 32
6-15. Schematic Diagram – MAIN Section (1/3) – .................. 33
6-16. Schematic Diagram – MAIN Section (2/3) – .................. 34
6-17. Schematic Diagram – MAIN Section (3/3) – .................. 35
6-18. Printed Wiring Board – AMP Section (HX3/HX7) – ...... 36
6-19. Schematic Diagram – AMP Section (HX3/HX7) – ......... 37
6-20. Printed Wiring Board – AMP Section (HX5) – ............... 38
6-21. Schematic Diagram – AMP Section (HX5) – ................. 39
6-22. Printed Wiring Boards – OUTPUT Section – ................. 40
6-23. Schematic Diagram – OUTPUT Section – ...................... 40
6-24. Printed Wiring Boards – PANEL Section – ..................... 42
6-25. Schematic Diagram – PANEL Section – ......................... 43
6-26. Printed Wiring Boards – POWER SUPPLY Section – .... 44
6-27. Schematic Diagram – POWER SUPPLY Section – ........ 45

7-1.

Panel Section ................................................................... 64

7-2.

Chassis (Top) Section ...................................................... 65

7-3.

Panel Key Section ............................................................ 66

7-4.

Front Panel Section ......................................................... 67

7-5.

MAIN Section ................................................................. 68

7-6.

Chassis Section ................................................................ 69

7-7.

Loading Mechanism Section ........................................... 70

7-8.

Base Unit Section (BU-K6BD90-WOD: HX7)
(BU-K6BD90U-WOD: HX3/HX5) ................................ 71

................................ 72

Refer to SUPPLEMENT-1 for the SWITCHING POWER and USB
POWER boards of printed wiring board, schematic diagram and
electrical parts list of HX5: Singapore model.
When repairing the set of except HX5: Singapore model, refer to
either of original service manual/SUPPLEMENT-1 according to
the set.

Refer to SUPPLEMENT-2 for the MAIN board of printed wiring
board, schematic diagram and electrical parts list of HX5:
Singapore model.
When repairing the set of except HX5: Singapore model, refer to
either of original service manual/SUPPLEMENT-1 according to
the set.

4

MODEL

PART No.

HX3: Canadian

2-895-161-0[]

HX3: AEP

2-895-161-1[]

HX5: Canadian

3-096-225-0[]

HX5: AEP, UK

3-096-225-1[]

HX5: Singapore

3-096-225-2[]

HX5: Australian

3-096-225-3[]

HX5: Korean

3-096-225-4[]

HX7

3-096-225-5[]

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.

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 pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.

•

Unleaded solder melts at a temperature about 40 

°

C higher

than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350 

°

C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

•

Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)

than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

•

Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.

1. Press the  

I

/1

  button to turn the power on.

2. While pressing the

x/

CANCEL

button, press the

Z

button

until “UNLOCKED” displayed on the fluorescent indicator
tube (around 5 seconds).

When “LOCKED” is displayed, the antitheft lock is not released by
turning power on/off with the

I/

1

button.

Please resolve it to the state of the figure below referring to 3-2.
Panel (Top) and 3-3. Front Panel Block of DISASSEMBLY.

1

2