DOWNLOAD Sony CMT-HX35R / HCD-HX35R Service Manual ↓ Size: 5.06 MB | Pages: 66 in PDF or view online for FREE

2009E05-1

© 

2009.05

•  HCD-HX35R is the amplifi er, USB, CD player 

and tuner section in CMT-HX35R.

Model Name Using Similar Mechanism

HCD-HX50BTR

Base Unit Name

BU-K6BD90U-WOD

Optical Pick-up Name

KSM-213DCP

‡ “WALKMAN” and “WALKMAN” 

logo are registered trademarks of Sony 
Corporation.

‡ MPEG Layer-3 audio coding 

technology and patents licensed from 

‡ Windows Media is a registered 

in the United States and/or other 
countries.

Fraunhofer IIS and Thomson.

trademark of Microsoft Corporation

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 
22 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

Supported bit rate

MP3 (MPEG 1 Audio Layer-3): 
32 

 320 kbps, VBR

WMA: 32 

 192 kbps, VBR

AAC: 48 

 320 kbps

Sampling frequencies

MP3 (MPEG 1 Audio Layer-3): 
32/44.1/48 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 44.6μW

* 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 90 dB

FM stereo, FM/AM superheterodyne tuner

FM tuner section:

Tuning range:

87.5 

 108.0 MHz (50 kHz step)

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

AM tuner section:

Tuning range:

531 

 1,602 kHz (with 9 kHz tuning 

interval)

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

Power requirements:

220 

 240 V AC, 50/60 Hz

Power consumption: 40 watts
Dimensions (w/h/d) (excl. speakers): 

Approx. 305 × 116 × 226 mm

Mass (excl. speakers): Approx. 2.8 kg

Design and specifications are subject to 
change without notice.

  .............................................   3

2-1.   Disassembly Flow ...........................................................   5
2-2.   Panel (Top) Block ...........................................................   6
2-3.   Panel (Front) Block .........................................................   6
2-4.   Knob Assy .......................................................................   7
2-5.   MAIN Board ...................................................................   7
2-6.   Loading Mechanism Block .............................................   8
2-7.   Base Unit (BU-K6BD91UR2-WOD) .............................   8
2-8.   Belt ..................................................................................   9
2-9.   OP Base Assy (KSM-213D) ...........................................   9

  ............................................................   10

ELECTRICAL  CHECKS 

 ......................................   11

5-1.  Block Diagram - CD SERVO Section - ..........................   13
5-2.  Block Diagram - TUNER, USB Section - ......................   14
5-3.  Block Diagram - AUDIO Section - .................................   15
5-4. Block 

Diagram 

- PANEL, POWER SUPPLY Section - ...........................   16

5-5.  Printed Wiring Boards - CD Section - ............................   18
5-6.  Schematic Diagram - CD Board - ...................................   19
5-7.  Printed Wiring Board - USB Board - ..............................   20
5-8.  Schematic Diagram - USB Board - .................................   21
5-9.  Printed Wiring Board - MAIN Board - ...........................   22
5-10.  Schematic Diagram - MAIN Section (1/3) - ...................   23
5-11.  Schematic Diagram - MAIN Section (2/3) - ...................   24
5-12.  Schematic Diagram - MAIN Section (3/3) - ...................   25
5-13.  Printed Wiring Board - AMP Board - .............................   26
5-14.  Schematic Diagram - AMP Board - ................................   27
5-15.  Printed Wiring Boards - INPUT/OUTPUT Section - .....   28
5-16.  Schematic Diagram - INPUT/OUTPUT Section - ..........   29
5-17.  Printed Wiring Boards - PANEL Section - .....................   30
5-18.  Schematic Diagram - PANEL Section - ..........................   31
5-19.  Printed Wiring Board - SW POWER Board - .................   32
5-20.  Schematic Diagram - SW POWER Board - ...................   33

6-1.  Panel (Top) Section .........................................................   47
6-2.  Panel (Front) Section ......................................................   48
6-3. Main 

Section 

...................................................................  49

6-4. Chassis 

Section 

...............................................................  50

6-5.  Loading Mechanism Section ..........................................   51
6-6.  Base Unit Section (BU-K6BD91UR2-WOD) ................   52

  ..............................   53

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
• 

Never reuse a disconnected chip component.

• 

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

FLEXIBLE  CIRCUIT  BOARD  REPAIRING
• 

Keep the temperature of 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.

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

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

CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.

UNLEADED  SOLDER
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 viscous (sticky, less prone to fl ow) 
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 laser diode in the optical pick-up block may suffer electro-
static 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 fl exible board is easily damaged and should be handled with 
care.

NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.

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

Releasing Procedure:
1.  Press the [

?/1

] button to turn the power on.

2.  While pressing the [

x

 CANCEL] button, press the [

Z

] but-

ton unit “UNLOCKED” displayed on the fl uorescent indicator 
tube (around 5 seconds) .

Note: When “LOCKED”is displayed, the tray lock is not released by turn-

ing power on/off with the [

?/1] button.

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4

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