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2013B33-1

© 

2013.02

•  HCD-FX300i (US, CND, UK, SP, TW, KR, TH, 

AUS) is the amplifi er, CD player, tuner and 
iPod section in CMT-FX300i (US, CND, UK, 
SP, TW, KR, TH, AUS).

•  HCD-FX300i (AEP, E2, E51, MX) is the ampli-

fi er, CD player, tuner, USB and iPod section in 
CMT-FX300i (AEP, E2, E51, MX).

Model Name Using Similar Mechanism

NEW

Base Unit Name (US, CND, UK, SP, TW, KR, TH, AUS)

BU-D1BD73

Base Unit Name (AEP, E2, E51, MX)

BU-D1BD73U

Optical Pick-up Block Name

DA11MMVGP

European model:

DIN power output (rated): 4 watts + 4 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 5 watts + 5 watts (4 ohms at 
1 kHz, 10% THD)
Music power output (reference): 9 watts + 9 watts

Other models:

DIN power output (rated): 4 watts + 4 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 5 watts + 5 watts (4 ohms at 
1 kHz, 10% THD)

AUDIO IN (stereo mini jack): Sensitivity 550 mV, impedance 50 kilohms

PHONES (stereo mini jack): Accepts headphones with an impedance of 
8 ohms or more
SPEAKERS: Accepts impedance of 4 ohms

System: Compact disc and digital audio system
Laser Diode Properties

Emission Duration: Continuous
Laser Output*: Less than 44.6μW
* 

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

AM tuner section:

Tuning range
European model:
531 kHz – 1,602 kHz (9 kHz step) 

Antenna: AM loop antenna
Intermediate frequency: 53 kHz

This output is the value measurement at a distance of 200mm from the

AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 4 ohm loads, both channels driven, from 120  – 15,000 Hz; rated 5watts 

 

per channel minimum RMS power, with no more than 10% total harmonic 
distortion from 250 milliwatts to rated output.

(The United States model only)

FM tuner section:

Tuning range:
North American model: 87.5 MHz – 108.0 MHz (100 kHz step)
Other models: 87.5 MHz – 108.0 MHz (50 kHz step)
Antenna: FM lead antenna
Intermediate frequency: 225 kHz

North American, E2, E51 and MX  models:
530 kHz – 1,710 kHz (10 kHz step)
531 kHz – 1,710 kHz (9 kHz step)
Australian model:
531 kHz – 1,710 kHz (9 kHz step) 
530 kHz – 1,710 kHz (10 kHz step) 
SP, TW, KR, TW and TH models:
531 kHz – 1,602 kHz (9 kHz step) 
530 kHz – 1,610 kHz (10 kHz step) 

Compatible iPod models:

iPod nano  

5th generation 

(video camera)

iPod touch  

2nd generation/ 

iPod touch  

Late 2009

iPod classic  

120 GB  

160 GB (2009)

iPod nano  

4th generation 

(video)

iPod classic  

160 GB (2007)

iPod touch  

1st generation

iPod nano  

3rd generation  

(video)

iPod classic  

80 GB

iPod nano  

2nd generation  

(aluminum)

iPod  

5th generation  

(video)

iPod nano  

1st generation

iPod  

4th generation 
(color display)

iPod 

4th generation

iPod mini

• Abbreviation
 AUS : 

Australian 

model

  CND  : Canadian model
  E2 

: 120V AC area in E model

– Continued on next page –

  E51 

: Chilean and Peruvian models

  KR 

: Korean model

  MX 

: Mexican model

  SP 

: Singapore model

 TH  : 

Thai 

model

 TW  : 

Taiwan 

model

iPod is a trademark of Apple Inc., registered in the U.S. 
and other countries.
MPEG Layer-3 audio coding technology and patents

All other trademarks and registered trademarks are of 
their respective holders. In this manual, 

TM

 and 

®

 marks 

‡

‡

‡

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.

SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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.

LEAKAGE  TEST
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)

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

0  SUR  

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

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

• Abbreviation
 AUS : 

Australian 

model

  CND  : Canadian model
  E2 

: 120V AC area in E model

  E51 

: Chilean and Peruvian models

  KR 

: Korean model

  MX 

: Mexican model

  SP 

: Singapore model

 TH  : 

Thai 

model

 TW  : 

Taiwan 

model

 

s

Standby power consumption: 0.5 W

wiring boards.

s

Halogenated flame retardants are not used in the certain printed

Supported bit rate:

MP3 (MPEG 1 Audio Layer-3): 32 kbps – 320 kbps, VBR

Sampling frequencies:

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

 (USB) port: Type A, maximum current 500 mA

Design and specifications are subject to change without notice.

Power requirements:

European model: AC 230 V, 50/60 Hz
Latin American models (except for Mexican model):
AC 110 V – 120 V or 220 V – 240 V, 50/60 Hz, adjustable with voltage 
selector
Mexican model: AC 120 V, 60 Hz

25 watts (US, CND, SP, KR, TW, TH, AUS)

Dimensions (W/H/D) (excl. speakers): 

Approx. 158 mm × 240 mm × 251.5 mm

Mass (excl. speakers): Approx. 2.2 kg

Power consumption: 28 watts (AEP, UK, E2, E51, MX)

North American model: AC 120 V, 60 Hz
Australian model: AC 230 V – 240 V, 50/60 Hz
Korean model: AC 220 V, 60 Hz

Taiwan model: AC 120 V, 50/60 Hz
Other models: AC 220 V – 240 V, 50/60 Hz

Thai model: AC 220 V, 60 Hz

 .............................................   4

2-1. Disassembly 

Flow 

...........................................................   6

2-2.  Panel (Rear) Block ..........................................................   6
2-3.  Top Panel Block  .............................................................   7
2-4.  Front Panel Block ...........................................................   7
2-5. Knob 

(VOL) 

....................................................................   8

2-6. MAIN 

Board 

...................................................................   8

2-7. Base 

Unit 

.........................................................................   9

2-8.  Optical Pick-up Block (DA11MMVGP) ........................   9

TEST  MODE 

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

ELECTRICAL  CHECK 

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

5-1.  Block Diagram - CD, TUNER, USB Section - ...............   13
5-2. Block 

Diagram 

 

- OUTPUT, PANEL, POWER SUPPLY Section - .........   14

5-3.  Printed Wiring Board - BD73/BD73U Board -  .............   16
5-4.  Schematic Diagram - BD73/BD73U Board -  ................   17
5-5. Printed 

Wiring 

Board 

 

- USB Board (AEP, E2, E51, MX) - ...............................   18

5-6. Schematic 

Diagram 

 

- USB Board (AEP, E2, E51, MX) - ...............................   19

5-7.  Schematic Diagram - MAIN Section (1/2) - ...................   20

5-8.  Schematic Diagram - MAIN Section (2/2) - ...................   21
5-9.  Printed Wiring Boards - MAIN Section - .......................   22
5-10.  Printed Wiring Board - IP Board - ..................................   23
5-11.  Schematic Diagram - IP Board - .....................................   23
5-12.  Schematic Diagram - PANEL Board (1/2) - ...................   24
5-13.  Schematic Diagram - PANEL Board (2/2) - ...................   25
5-14.  Printed Wiring Board - PANEL Board -  ........................   26
5-15.  Printed Wiring Board - PT Board (Except E2, E51) -  ...   27
5-16.  Schematic Diagram - PT Board (Except E2, E51) - .......   27
5-17.  Printed Wiring Board - PT-SW Board (E2, E51) -  ........   28
5-18.  Schematic Diagram - PT-SW Board (E2, E51) - ............   28

 

6-1. Overall 

Section 

...............................................................  36

6-2.  Top Panel Section ...........................................................   37
6-3.  Front Panel Section .........................................................   38
6-4. Chassis 

Section 

...............................................................  39

  ..............................   40

Accessories are given in the last of the electrical parts list.

• Abbreviation
  E2 

: 120V AC area in E model

  E51 

: Chilean and Peruvian models

  MX 

: Mexican model

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.

NOTE  OF  REPLACING  THE IC101  ON  THE  USB
BOARD (AEP, 120V AC area in E, Mexican, Chilean and 
Peruvian models only)
IC101 on the USB board cannot exchange with single.
When this part on the USB board is damaged, exchange the entire 
mounted board.

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.

LASER  DIODE  AND  FOCUS  SEARCH  OPERATION  
CHECK
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning on 
the SW880. (push switch type)
The following checking method for the laser diode is operable.

• Method
  Emission of the laser diode is visually checked.
  1.  Open the upper lid.
  2.  Push the SW880 as shown in Fig.1.

Note: Do not push the detection lever strongly, or it may be bent or 

damaged.

  3.  Check the object lens for confi rming normal emission of the 

laser diode. If not emitting, there is a trouble in the automatic 
power control circuit or the optical pick-up.

    In this operation, the object lens will move up and down 2 

times along with inward motion for the focus search.

AEP model

4-178-680-0

[]

Mexican model

4-178-681-0

[]

120V AC area in E, Chilean 
and Peruvian models

4-178-682-0

[]

Thai model

4-178-683-0

[]

US model

4-178-684-0

[]

Canadian model

4-178-685-0

[]

Singapore model

4-178-686-0

[]

Australian model

4-178-687-0

[]

Taiwan model

4-178-688-0

[]

Korean model

4-178-689-0

[]

UK model

4-178-690-0

[]

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.