Sony HCD-BX30R, HCD-BX40R Service Manual

HCD-BX30R/BX40R

SERVICE MANUAL

Ver. 1.1 2008.08

• HCD-BX30R is the amplifi er, USB, CD player
and tuner section in CMT-BX30R.

• HCD-BX40R is the amplifi er, USB, CD player
and tuner section in CMT-BX40R.

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

• MPEG Layer-3 audio coding technology and patents licensed from
Fraunhofer IIS and omson.

• Windows Media is a registered trademark of Microso Corporation
in the United States and/or other countries.

SPECIFICATIONS

AEP Model

E Model

HCD-BX30R

Mexican Model

HCD-BX30R/BX40R

Photo: HCD-BX30R

Model Name Using Similar Mechanism NEW
Base Unit Name BU-K6BD91UR2-WOD
Optical Pick-up Block Name KSM-213DCP

Amplifier section

European and Russian models:

DIN power output (rated):
18 + 18 watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output
(reference): 25 + 25 watts (6 ohms at
1 kHz, 10% THD)
Music power output (reference):
38 + 38 watts (6 ohms at 1 kHz, 10%
THD)

Other models:

DIN power output (rated):
18 + 18 watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output
(reference): 25 + 25 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

USB section

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

CD player section

System: Compact disc and digital audio
system
Laser Diode Properties

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

* 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

Tuner section

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

European and Russian models:
531 — 1,602 kHz (with 9 kHz tuning
interval)
Other models:
530 — 1,710 kHz (with 10 kHz tuning
interval)
531 — 1,710 kHz (with 9 kHz tuning
interval)

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

General

Power requirements

European and Russian models: 230 V
AC, 50/60 Hz
Mexican model: 120 V AC, 60 Hz
Argentine model: 220 V AC, 50/60 Hz
Other models: 120 V, 220 V, 230 −
240 V AC, 50/60 Hz, adjustable with
voltage selector

Power consumption

European model: 60 watts

Other models: 63 watts
Dimensions (w/h/d) (excl. speakers):
Approx. 215 × 140 × 298 mm

Mass (excl. speakers): Approx. 3.9 kg

Design and specications are subject to
change without notice.

9-889-032-02

2008H05-1

2008.08

©

COMPACT DISC RECEIVER

Sony Corporation

Audio&Video Business Group
Published by Sony Techno Create Corporation

HCD-BX30R/BX40R

TABLE OF CONTENTS

Notes on chip component replacement

• Never reuse a disconnected chip component.

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

CAUTION

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

This appliance is classifi ed as a CLASS
1 LASER product. For Latin American
models only except for the Mexico and
Argentine models, this marking is located
on the bottom exterior. For other models,
this marking is located on the rear exterior.

1. SERVICING NOTES ............................................. 3

2. GENERAL .................................................................. 5

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 7

3-2. Panel (Side L/R) .............................................................. 8

3-3. Top Panel Block .............................................................. 8

3-4. TOP KEY Board, Panel Top ........................................... 9

3-5. Front Panel Block ........................................................... 9

3-6. Rear Panel Block ............................................................ 10

3-7. D.C.Fan (M901), Tuner (FM/AM), Panel (Rear) ........... 10

3-8. MAIN Board ................................................................... 11

3-9. POWER Board Block ..................................................... 11

3-10. AMP Board Block ........................................................... 12

3-11. Loading Mechanism Block ............................................. 12

3-12. Base Unit ......................................................................... 13

3-13. Belt .................................................................................. 13

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

4. TEST MODE ............................................................ 15

5. ELECTRICAL CHECKS ...................................... 17

6. DIAGRAMS

6-1. Block Diagram - CD SERVO Section - .......................... 18

6-2. Block Diagram - MAIN Section - ................................... 19

6-3. Block Diagram

- PANEL/POWER SUPPLY Section - ............................ 20

6-4. Printed Wiring Boards - CD Section - ............................ 22

6-5. Schematic Diagram - CD Section - ................................. 23

6-6. Printed Wiring Board - USB Board - .............................. 24

6-7. Schematic Diagram - USB Board - ................................. 25

6-8. Printed Wiring Boards - MAIN Section - ....................... 26

6-9. Schematic Diagram - MAIN Section (1/3) - ................... 27

6-10. Schematic Diagram - MAIN Section (2/3) - ................... 28

6-11. Schematic Diagram - MAIN Section (3/3) - ................... 29

6-12. Printed Wiring Boards - AMP/HP Boards - .................... 30

6-13. Schematic Diagram - AMP/HP Boards - ........................ 31

6-14. Printed Wiring Boards - PANEL Section - ..................... 32

6-15. Schematic Diagram - PANEL Section - .......................... 33

6-16. Printed Wiring Boards - POWER SUPPLY Section - .... 34

6-17. Schematic Diagram - POWER SUPPLY Section - ......... 35

SAFETY-RELATED COMPONET WARNING!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

2

7. EXPLODED VIEWS

7-1. Panel Section ................................................................... 44

7-2. Top Panel Section ........................................................... 45

7-3. Front Panel Section ......................................................... 46

7-4. MAIN Board Section ...................................................... 47

7-5. POWER Board Section ................................................... 48

7-6. Loading Mechanism Section .......................................... 49

7-7. Base Unit Section (BU-K6BD91UR2-WOD) ............... 50

8. ELECTRICAL PARTS LIST .............................. 51

SECTION 1

SERVICING NOTES

HCD-BX30R/BX40R

Ver. 1.1

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

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 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.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free 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)

: LEAD FREE MARK

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.

ANTITHEFT UNLOCK MODE

Procedure:

1. Press the [

] button to turn the power on.

?/1

2. Press the [FUNCTION] button to select “CD”.

3. Press two buttons of [

x/CANCEL

] and [

] for 5 seconds.

A

4. The message “UNLOCKED” is displayed on the fl uorescent
indicator tube and the disc tray is unlocked.

MODEL IDENTIFICATION

AEP, Russian, Mexican and Argentina models
– Rear View –

Part No.

120V AC area in E, Chilean and Peruvian models
– Bottom View –

Part No.

Model Part No.

BX30R: AEP model
BX30R: Russian model
BX30R: 120V AC area in E, Chilean

and Peruvian models
BX30R: Mexican model
BX30R: Argentina model
BX40R: Mexican model

3-293-466-0[]
3-295-845-0[]

3-295-846-0[]
3-295-847-0[]

3-295-864-0[]
4-107-474-0[]

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

turning power on/off with the [?/1] button.

3

HCD-BX30R/BX40R

HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF

Note: Please insert a screwdriver after removing the panel (side L).

About disassembly of the panel (side L), please refer to “3-2. Panel (Side L/R)” (page 8).

Open the tray.



Insert the driver.



Push the boss.



4

HCD-BX30R/BX40R

SECTION 2

GENERAL

This section is extracted
from instruction manual.

Guide to parts and controls

is manual mainly explains operations using the remote, but the same operations can also be performed using the buttons on the unit having the same or similar names.

Unit
Front panel

Top panel

Remote



/ (power) button

Press to turn on the system.



STANDBY indicator

Lights up when the system is turned o.



Remote sensor



USB MEMORY indicator

Lights up when an optional USB device
is connected.



; (open/close) button

Press to open or close the disc tray.



AUDIO IN jack

Connect to an optional audio
component.



PHONES jack

Connect the headphones.



(USB) port

Connect to an optional USB device.



Playback buttons and function
buttons

Unit: USB V (play/pause)
button

Press to select the USB function.
Presstostartorpauseplaybackofan
optional USB device.

Remote: USB button

Press to select the USB function.

Unit: CD V (play/pause)
button

Press to select the CD function.
Press to start or pause playback of a disc.

Remote: CD button

Press to select the CD function.

5

HCD-BX30R/BX40R

Remote: / (play) button,
9 (pause) button

Presstostartorpauseplayback.

TUNER/BAND button

Press to select the TUNER function.
Press to select FM or AM reception
mode.

Unit: AUDIO IN button

Press to select the AUDIO IN function.

FUNCTION button

Presstoselectthefunction.

R

Unit: CD-USB SYNC/REC1 button

Press to record from a disc onto the
connected optional USB device.

RB

USB MENU button

Press to erase audio les folders from
the connected optional USB device.
Presstoselectwhichmemorytoread
to if the USB device has more than one
memory.

RT

ENTER button

Press to enter the settings.

RE

N /. (go back/go forward)
button

Press to select a track or le.

Unit: TUNE +/− (tuning) button
Remote: +/− (tuning) button

Press to tune in the desired station.

+/− (select folder) button

Press to select a folder.

/ (rewind/fast forward)
button

Press to nd a point in a track or le.

RG

Unit: VOL +/− button
Remote: VOLUME +/− button

Press to adjust the volume.

RH

PLAY MODE/TUNING MODE
button

Press to select the play mode of a CD,
MP3 disc or an optional USB device.
Press to select the tuning mode.

RI

Sound buttons
Unit: DSGX button
Remote: EQ button

Press to select the sound eect.

RK

Unit: Y/CANCEL (stop/cancel)
button

Remote: Y (stop) button

Presstostopplayback.

RL

CLOCK/TIMER SELECT button
CLOCK/TIMER SET button

PresstosettheclockandthePlayTimer.

RM

REPEAT/FM MODE button

Press to listen to a disc, a single track or
le repeatedly.
Press to select the FM reception mode
(monaural or stereo).

X

Battery compartment lid

XB

CLEAR button

Press to delete a pre-programmed track
or le.

XT

TUNER MEMORY button

Press to preset the radio station.

XE

DISPLAY button

Press to change the information on the
display.

XG

SLEEP button

Press to set the Sleep Timer.

Setting the clock

Usebuttonsontheremotetosetthe
clock.

1

Press / to turn on the
system.

2

Press CLOCK/TIMER SET RL.

e hour indication ashes in the
display.

If “PLAY SET?” ashes in the display,
press /
select “CLOCK SET?” and then press
ENTER

3

Press /RErepeatedly
to set the hour, and then press
ENTER RT.

4

Use the same procedure to set
the minutes.

disconnect the power cord or if a
power failure occurs.

To display the clock when the system

Press DISPLAYXE. e clock is displayed
for about 8 seconds.

RE repeatedly to

RT.

6

DISASSEMBLY

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

3-2. PANEL (SIDE L/R)
(Page 8)

3-3. TOP PANEL BLOCK
(Page 8)

HCD-BX30R/BX40R

SECTION 3

3-5. FRONT PANEL BLOCK
(Page 9)

3-11. LOADING MECHANISM
BLOCK
(Page 12)

3-12. BASE UNIT
(Page 13)

3-13. BELT
(Page 13)

3-14. OP BASE ASSY (KSM-213D)
(Page 14)

3-6. REAR PANEL BLOCK
(Page 10)

3-9. POWER BOARD BLOCK
(Page 11)

3-10. AMP BOARD BLOCK
(Page 12)

3-4. TOP KEY BOARD,
PANEL TOP
(Page 9)

3-7. D.C.FAN (M901), TUNER (FM/AM),
PANEL (REAR)
(Page 10)

3-8. MAIN BOARD
(Page 11)

7

HCD-BX30R/BX40R

Note: Follow the disassembly procedure in the numerical order given.

3-2. PANEL (SIDE L/R)

screw



(BVTP3 × 10)

panel (side L)



two screws



(BVST3 × 6)

screw



(BVTP3 × 10)

panel (side R)



3-3. TOP PANEL BLOCK



(PWH3 × 6)

screw



(BVTT3 × 6)

screw



connector



(CN322)

top panel block



two screws



(BVST3 × 6)

five screws



(BVTP3 × 10)

screw



(PWH3 × 6)

screw



(BVTT3 × 6)

8

3-4. TOP KEY BOARD, PANEL TOP

button (function)



button (function B)



TOP KEY board



panel top



button (tune)



button (enter)



HCD-BX30R/BX40R



(BVTP2.6)

3-5. FRONT PANEL BLOCK

four screws

screw



(BVTT3 × 6)

five screws



(BVTP2.6)

button



(VOL)

two screws



(BVST3 × 6)

flexible flat cable (13 core)



(CN306)

front panel block



9

HCD-BX30R/BX40R

3-6. REAR PANEL BLOCK

(120V AC area in E model/
Chilean and Peruvian models)



rear panel block



connector (CN905: red)



connector (CN902: white)

flexible flat cable (9 core)



(CN310)

two screws



(BVTP3 × 10)

three screws



(BVST3 × 6)

fan motor connector (CN313)



3-7. D.C.FAN (M901), TUNER (FM/AM), PANEL (REAR)

(120V AC area in E model/
Chilean and Peruvian models)

VOL SELECT board



two screws



(BVTP2.6)

D.C. fan



(M901)

panel (rear)



two screws



(BVTP3 × 16)

plate



(GND TU)





(BVST3 × 6)

tuner (FM/AM)



two feet (felt)

two screws

flexible flat cable (9 core)



10

3-8. MAIN BOARD



(CN305)

flexible flat cable (5 core)



(CN311)

flexible flat cable (7 core)



(CN309)

flexible flat cable (27 core)

flexible flat cable (21 core)



(CN304)

two screws



(BVTT3 × 6)

connector



(CN316)

HCD-BX30R/BX40R

connector



(CN303)

connector



(CN320)

MAIN board



3-9. POWER BOARD BLOCK



POWER board block



connector (CN904)



four screws

screw



(BV3)

coating clip



power cord connector



(CN901)

11

HCD-BX30R/BX40R

3-10. AMP BOARD BLOCK

connector



(CN908)

two screws



(BV3)



AMP board block

3-11. LOADING MECHANISM BLOCK

holder (CD)



three screws



(BV3)

loading mechanism block



door CD



flexible flat cable (5 core)



(CN001)

flexible flat cable (27 core)



(CD board: CN201)

two screws



(BVTP2.6)



flexible flat cable (5 core)



(CN311)

flexible flat cable (27 core)



(MAIN Board: CN305)

12

3-12. BASE UNIT

 two floating screws

 two springs (insulator)

 floating screw

 insulator

HCD-BX30R/BX40R

 two floating screws

 two springs

(insulator)

 insulator

3-13. BELT

position of belt

 insulator

 insulator

– Bottom view –



 base unit

loading (BK) assy

 tray (AU)

 belt

belt

 claw



 claw

13

HCD-BX30R/BX40R

3-14. OP BASE ASSY (KSM-213D)

 OP base assy
(KSM-213D)

 flexible flat cable (16 core)
(CD board: CN301/optical pick-up block)

 CD board

 Remove four solders.

14

SECTION 4

TEST MODE

HCD-BX30R/BX40R

COLD RESET

The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning the
set to the customer.

Procedure:

1. Press three buttons of [x/CANCEL], [VOL +] and [?/1] si­multaneously.

2. The system is reset and becomes standby states.

COMMON TEST MODE

This mode is used to check operations of amplifi er.

Procedure

1. Press the [

2. Press three buttons of [TUNER/BAND], [x/CANCEL] and
[ENTER] simultaneously.

3. When the COMMON test mode is activated, “AUDIO IN” is
displayed on the liquid crystal display and “cPLAY SLEEP”
blink on the fl uorescent indicator tube.

4. Each time [EQ] button on the remote commander is pressed,
the display changes starting “TONE MAX”, “TONE MIN”
and “TONE FLAT” this order.

5. Press the [VOL –] button, “VOLUME MIN” is displayed
on the fl uorescent indicator tube. Press the [VOL +] button,
“VOLUME MAX” is displayed on the fl uorescent indicator
tube.

6. To release this mode, press the [

PANEL TEST MODE

This mode is used to check the liquid crystal display, LED, model,
destination, software version and key.

Procedure

1. Press the [?/1] button to turn the power on.

2. Press three buttons of [TUNER/BAND], [DSGX] and [EN­TER] simultaneously.

3. All segments on the fl uorescent indicator tube, [STANDBY]
LED and [USB MEMORY] LED light up.

4. Press the [ENTER] button, the model and destination are alter­nately displayed on the fl uorescent indicator tube.

5. Press the [ENTER] button again, MC version is displayed on
the fl uorescent indicator tube.

6. Each time [ENTER] button is pressed, the display changes
starting from MC version, GC version, USBL version, USBM
version, CD version, CDD version, CDMA version, CDMB
version, BDA version, BDB version, ST version, TA version
and TM version this order, and returns to the MC version dis­play.

7. When [x/CANCEL] button is pressed while the MC version
is displayed, year, month and day of the software creation is
displayed. When [x/CANCEL] button is pressed again, the
display returns to the MC version display.

8. Press the [DSGX] button, the key test mode is activated and
“K 0” is displayed on the fl uorescent indicator tube.

9. Each time a button is pressed, “K” value increases. However,
once a button is pressed, it is no longer taken into account.

All keys are pressed, display becomes “K19”.

10. Press the [VOL +] button, the key AD monitor mode is acti­vated and “FFFFFF” is displayed on the fl uorescent indicator
tube.

11. Each time a button is pressed, the AD of each button is dis­played on the fl uorescent indicator tube.

12. To release this mode, press three buttons in the same manner as
step 2, or disconnect the power cord.

] button to turn the power on.

?/1

?/1

] button.

TUNER STEP CHANGE
(Except AEP and Russian models)

A step of AM tuning interval can be changed over between 9 kHz
or 10 kHz.

Procedure

1. Press the [?/1] button to turn the power on.

2. Press the [TUNER/BAND] button to select “AM” .

3. Press the [

4. Press two buttons of [ENTER] and [?/1] simultaneously.

5. The message “STEP 9” or “STEP 10” is displayed on the fl uo-
rescent indicator tube and thus the tuning interval is changed
over.

CD SHIP MODE

This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.

Procedure

1. Press the [?/1] button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.

3. Press three buttons of [DSGX], [VOL +] and [
ously.

4. After the “STANDBY” display blinks, “LOCK” is displayed
on the fl uorescent indicator tube, the ship mode is set.

CD SHIP MODE & MEMORY CLEAR

This mode is used to perform CD ship mode and cold reset simul­taneously.

Procedure

1. Press the [?/1] button to turn the power on.

2. Press three buttons of [x/CANCEL], [VOL +] and [A] simul­taneously.

3. After the “STANDBY” display blinks, “LOCK” is displayed
on the fl uorescent indicator tube the ship mode is set and the
system is reset.

ANTITHEFT LOCK MODE

This mode is used to unable to take sample disc out of disc tray in
the shop.

Procedure

1. Press the [?/1] button to turn the power on.

2. Press the [A] button to open the disc tray and set the CD disc.

3. Press the [A] button to close the disc tray.

4. Press the [FUNCTION] button to select “CD”.

5. Press two buttons of [x/CANCEL] and [A] for 5 seconds.

6. The message “LOCKED” is displayed on the fl uorescent indi-
cator tube and the disc tray is locked. (Even if pressing the Z
button, the message “LOCKED” is displayed on the fl uores-
cent indicator tube and the disc tray is locked)

7. To release from this mode, press two buttons of [x/CANCEL]
and [A] for 5 seconds.

8. The message “UNLOCKED” is displayed on the fl uorescent
indicator tube and the disc tray is unlocked.

CD POWER MANAGE

This mode is used to changed over CD power on/off for decreasing
of reception noise in the tuner mode.

Procedure

1. Press the [?/1] button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.

3. Press the [

4. Press two buttons of [

5. The message “CD POWER”, “ON” or “CD POWER”, “OFF”is
displayed on the fl uorescent indicator tube, and CD power on/
off is changed over in the tuner mode.

] button again to turn the power off.

?/1

] button again to turn the power off.

?/1

/CANCEL] and [?/1] simultaneously.

x

] simultane-

A

15

HCD-BX30R/BX40R

CD SERVICE MODE

This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the optical pick-up.

Procedure:

1. Press the [?/1] button to turn the power on.

2. Press the [FUNCTION] button to select “CD”.

3. Press three buttons of [x/CANCEL], [VOL –] and [A] simul­taneously, the message “SERVICE MO” is displayed on the
fl uorescent indicator tube.

4. Press the [l m TUNE –] button to move the optical pick­up to inside track and the message “SLED IN” is displayed on
the fl uorescent indicator tube, or press the [M L TUNE
+] button to outside track and the message “SLED OUT” is
displayed on the fl uorescent indicator tube.

5. Press the [CD u] button, “LD ON” or “LD OFF” is displayed
on the fl uorescent indicator tube. Each time [CD u] button is
pressed, laser diode on/off is changed over.

6. To release this mode, press the [

?/1

] button.

16

HCD-BX30R/BX40R

HCD-BX30R/BX40R

1717

SECTION 5

ELECTRICAL CHECKS

FM TUNE LEVEL CHECK

Procedure:

1. Turn on the set.

2. Input the following signal from signal generator to FM antenna
input directly.

Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)

Note: Use 75 ohm coaxial cable to connect signal generator and the set.

You cannot use video cable for checking.

Use signal generator whose output impedance is 75 ohm.

3. Set to FM tuner function and tune A, B and C signals.

4. Confi rm “TUNED” is lit on the display for A, B and C sig-
nals.

When the selected station signal is received in good condition,
“TUNED” is displayed.

Note:

1. CD Block is basically constructed to operate without adjustment.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10 MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specifi ed value with the following checks.

5. Check the focus bias check when optical pick-up block is replaced.

FOCUS BIAS CHECK

Procedure:

1. Connect oscilloscope to TP121 (RFI) and TP124 (VC) on the
CD board.

2. Press the [

?/1

] button to turn the power on.

3. Set disc (YEDS-18) on the disc tray and press the [CD u]
button to playback.

4. Confi rm that oscilloscope waveform is as shown in the fi gure
below. (eye pattern)

A good eye pattern means that the diamond shape (◊) in the

center of the waveform can be clearly distinguished.

Checking Location:

TUNER SECTION

CD SECTION

VOLT/DIV: 200 mV
TIME/DIV: 500 ns

level:

1.2 ± 0.3 Vp-p

signal

generator

set

oscilloscope

(DC range)

CD board

TP121 (RFI)
TP124 (VC)

+
–

– CD Board (Conductor Side) –

TP124

(VC)

TP121

(RFI)

IC101

HCD-BX30R/BX40R

HCD-BX30R/BX40R

1818

SYSTEM CONTROLLER

IC301 (1/3)

CD-MP3 PROCESSOR

IC101

MUTE

2-AXIS

DEVICE

(TRACKING)(FOCUS)

95

89

A

AVDD

+3.3V

DETECTOR

FNi1 (A)

RFo

97 FPi1 (B)

88

2

AGCi

3RFRP RFZi

76TEi TEZi

83RFEQo 81 RFi

82 RFRPi

30LO

27RO

65AIN (PI4)
66BCKi (PI5)

BCK

A-IN

BUS1

BUS0

BUS2

BUS3

BUCK

67LRCKi (PI6)

LRCK

51PIO3

GATE

49PIO1

ST-REQ

38BUS0

R-CH

94 FNi2 (C)

96 FPi2 (D)

100 TNi (E)

98 TPi (F)

91 LDo 92MDi

2VO1+

1VO1–

13 DMO

AUTOMATIC

POWER CONTROL

Q301

LD

PD

LASER DIODE

OPTICAL PICK-UP

BLOCK

(KSM-213DCP)

B

C

D

E

F

12 FMO

10 TRo

9FOo

20 IO0 (/HSO)

I-V AMP

M401

(SPINDLE)

M402

(SLED)

12 VO2–

11 VO2+

18 VO3+

17 VO3–

26 VO4+

27

7

IN4’

24

IN3’

20

IN2’

9

IN1

3

BIAS

23

84 VRo

VO4–

M

M

FOCUS/TRACKING COIL DRIVE,

SLED/SPINDLE MOTOR DRIVE

IC401

S201

(LIMIT)
DVDD
+3.3V

24

XO

23

XI

X102

16.9344MHz

60 CD DRIVER MUTE

LOADING

MOTOR DRIVE

IC311

CDM LOAD IN

85

CDM LOAD OUT

CDM SW (OPEN)

CDM SW (CLOSE)

84

88
87

M

A

CD-L

B

DATA, CLOCK,

A-IN, BCK, LRCK,

GATE, ST-REQ

C

BUS0 – BUS3,

BUCK, CCE, REQ

: CD PLAY

SIGNAL PATH

R-ch is omitted due to same as L-ch.

: USB

VCC

A

B

C

D

E

F

LD

PD

SP+

VC

SP–

SL+

SL–

T+

T–

F+

F–

1 2 3 CD BUS0

13

39BUS1 4 3 2 CD BUS1

5

40BUS2 (SO) 8 9 1 CD BUS2

70 CD CLK

6

41BUS3 (SI) 11 10 100 CD BUS3

12

BUS SWITCH

IC321

1 2

13

4 3

5

8 9

6

11 10

12

BUS SWITCH

IC322

DATA SELECTOR

IC323

A/B

Q321

42BUCK (CLK) 4

2
3

CCE

69 CD CCE

43XCCE

54SBSY

48PIO0

7

68 MP3 IREQ

67 DEC BUS SEL

19 SBSY

37XRST

59 CD RESET

5

REQ

6

12

14
13

9

10
11

1

S001

DISC TRAY

OPEN/CLOSE DETECT

OPEN

CLOSE

M001

(LOADING)

47AOUT2 (PO5)
63BCK (PO8)

CLOCK

DATA

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM - CD SERVO Section -

(Page 19)

(Page 19)

(Page 19)

HCD-BX30R/BX40R

HCD-BX30R/BX40R

1919

BUS1

BUS0

BUS2
BUS3

BUCK

CCE

REQ

LB

I/O0 – I/O15

D0 – D15

S-RAM

IC921

39

UB

40

OE

41

WE

17

CE

6

79 D+

80 D–

77 USBOC

USB CONTROLLER

IC901

35 USB TXD

SYSTEM CONTROLLER

IC301 (2/3)

CN902
(USB)

3

2

1

D+

D–

78 USBPON

70 CS2
64

RD
65 WR
66 SRLLB
67 SRLUB

VBUS

B

DATA, CLOCK,

A-IN, BCK, LRCK,

GATE, ST-REQ

C

BUS0 – BUS3,

BUCK, CCE, REQ

VBUS POWER

ON/OFF SWITCH

IC915

5

1

4OUT

EN

3

FLG

IN

VBUS

+5V

93DATA
92BCK

BCK

A-IN

LRCK
GATE

ST-REQ

71LRCK
94GATE
97ST-REQ

55BUS0
56BUS1

88RXD1

36 USB RXD87TXD1

38 USB RTS2DI
76 USB CTS84DO
75 USB RESET1/RESET

57BUS2
58BUS3
59/BUCK
60/CCE
96REQ

7 – 10, 13 – 16,

29 – 32, 35 – 38

18 – 25, 28 – 35

A0 – A15

A1 – A16

44 – 42, 27 – 24,

21 – 18, 5 – 1

37 – 43, 46 – 54

73

X2

75

X1

X901

9MHz

TUNER (FM/AM)

AM

FM ANT

AM ANT

L OUT

R OUT

DO/STEREO

R-CH

ST DIN

ST CLK

ST CE

FM 75Ω

COAXIAL

ANTENNA

26 DATA IN/STEREO

TUNED

6 TUNER TUNED

RDS CLK

18 RDS INT

RDS DATA

7 RDS DATA

28 ST DATA OUT
27 ST CLK
25 ST CE

: USB

CLOCK

DATA

85DATA
86CLOCK

(AEP)

PROTECT

D

10

26

SDA25SCL

AMP DATA 24

AMP CLOCK

22

TA LINE MUTE

23

STK-ON

53

OUT1

INPUT SELECTOR,

ELECTRICAL VOLUME,

SURROUND/TONE CONTROL

IC304

: AUDIO

: CD PLAY

SIGNAL PATH

R-ch is omitted due to same as L-ch.

: TUNER (FM/AM)

SEL1

VOL1

11

MUTING

Q103

R-CH

23

MUTING

CONTROL

SWITCH

Q340, 341

: AUDIO IN

POWER AMP

IC601

11 CH1 IN

10

MONITOR

CH1 OUT+

4

CH1 OUT–

5

13

STBY

J500

R-CH

PHONES

SPEAKER

+
–

–

+

R

L

J302

DC

DETECT

Q342 – 344

POWER

MONITOR

Q345

M901
(FAN)

+9V

MM

AC DET

E

D313

FAN MOTOR

DRIVE

Q316, 317

FAN MOTOR

DETECT

Q307, 347, 348

AUDIO IN

R-CH

J301

CD-L

A

5

3

1

C1

B1

A1

6-2. BLOCK DIAGRAM - MAIN Section -

(Page 18)

(Page 18)

(Page 18)

(Page 20)

(Page 20)