Sony HCD-DX6AV, HCD-BX6AV Service Manual

HCD-BX6AV/DX6AV

SERVICE MANUAL

Ver 1.1 2001.07

	HCD-BX6AV/DX6AV is the Amplifier,
	CD player, Tape player and Tuner	Photo: HCD-BX6AV
	section in MHC-BX6AV/DX6AV.

US Model

Canadian Model

AEP Model

UK Model

HCD-BX6AV

E Model

Australian Model

HCD-DX6AV

Manufactured under license from Dolby Laboratories Licensing Corporation. Additionally licensed under Canadian patent 1,037,877. “Dolby”, the double-D symbol ;and “PRO LOGIC” are trademarks of Dolby Laboratories Licensing Corporation.

		Model Name Using Similar Mechanism	HCD-BX2/DX2
	CD
		CD Mechanism Type	EXL-M7
	Section
		Optical Pick-up Name	OPTIMA-7
	Tape deck	Model Name Using Similar Mechanism	HCD-RXD6AV
	Section
		Tape Transport Mechanism Type	CWL-44-RR

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS: (US model only)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

with 6 ohm loads both channels driven, from 120-10,000 Hz; rates 10 watts per channel minimum RMS power, with no more than 10% total harmonic distortion from 250 milliwatts to rated output.

Amplifier section

US model Center Speaker:

Continuous RMS power output (reference) 40 watts

(6 ohms at 1 kHz, 10% THD)

Rear Speaker:

Continuous RMS power output (reference) 40 + 40 watts

(6 ohms at 1 kHz, 10% THD)

Canadian model Front Speaker:

Continuous RMS power output (reference) 60 + 60 watts

(6 ohms at 1 kHz, 10% THD)

Total harmonics distortion

Less than 0.07%

(6 ohms at 1 kHz, 30 W)

Center Speaker:

Continuous RMS power output (reference) 40 watts

(6 ohms at 1 kHz, 10% THD)

Rear Speaker:

Continuous RMS power output (reference) 40 + 40 watts

(6 ohms at 1 kHz, 10% THD)

AEP, UK models Front Speaker:

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)

100 + 100 watts (6 ohms at 1 kHz, 10% THD)

Center Speaker:

DIN power output (rated) 25 watts

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference)

35 watts

(6 ohms at 1 kHz, 10% THD)

Music power output (reference) 70 watts

(6 ohms at 1 kHz, 10% THD)

Rear Speaker:

DIN power output (rated) 25 + 25 watts

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference)

35 + 35 watts

(6 ohms at 1 kHz, 10% THD)

Music power output (reference)

70 + 70 watts

(6 ohms at 1 kHz, 10% THD)

Other models:

The following measured at AC 120/240 V, 50/60 Hz

Front Speaker:

DIN power output (rated) 45 + 45 watts

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference)

60 + 60 watts

(6 ohms at 1 kHz, 10% THD)

Center Speaker:

DIN power output (rated) 30 watts

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference)

40 watts

(8 ohms at 1 kHz, 10% THD)

Rear Speaker:

DIN power output (rated) 30 + 30 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference) 40 + 40 watts

(6 ohms at 1 kHz, 10% THD)

Inputs
MD/VIDEO IN:	voltage 250/450 mV,
(phono jacks)	impedance 47 kilohms
DVD INPUT:
FRONT IN:	voltage 450 mV,
(phono jacks)	impedance 47 kilohms
REAR IN:	voltage 450 mV,
(phono jacks)	impedance 47 kilohms
CENTER IN:	voltage 450 mV,
(phono jacks)	impedance 47 kilohms
WOOFER IN:	voltage 450 mV,
(phono jacks)	impedance 47 kilohms
Outputs
PHONES:	accepts headphones of
(stereo mini jack)	8 ohms or more
FRONT SPEAKER:	accepts impedance of 6 to
	16 ohms
REAR SPEAKER:	accepts impedance of 6 to
	16 ohms
CENTER SPEAKER:	accepts impedance of 6 to
	16 ohms
WOOFER:	Voltage 1 V, impedance
	1 kilohms

CD player section

System	Compact disc and digital
	audio system
Laser	Semiconductor laser
	(λ =780nm)
	Emission duration:
	continuous
Laser output	Max. 44.6 W*
	*This output is the value
	measured at a distance of
	200 mm from the
	objective lens surface on
	the Optical Pick-up Block
	with 7 mm aperture.
	– Continued on next page –

COMPACT DISC DECK RECEIVER

9-929-250-12	Sony Corporation
2001G0500-1	Home Audio Company
C 2001.7	Shinagawa Tec Service Manual Production Group

Tuning range Antenna

Antenna terminals Intermediate frequency

AM tuner section

87.5 – 108.0 MHz FM lead antenna 75 ohm unbalanced 10.7 MHz

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Recording system Frequency response

4-track 2-channel stereo

40 – 13,000 Hz (±3 dB), using Sony TYPE I cassette

Wavelength 780 – 790 nm Frequency response 20 Hz – 20 kHz (±0.5 dB) Signal-to-noise ratio More than 90 dB Dynamic range More than 90 dB

CD OPTICAL DIGITAL OUT

(Square optical connector jack, rear panel) Wavelength 660 nm Output Level –18 dBm

Tape player section

Tuning range
US, Canadian models:	530 – 1,710 kHz
	(with the interval set at
	10 kHz)
	531 – 1,710 kHz
	(with the interval set at

	9 kHz)
AEP, UK and Middle Eastern models:
	531 – 1,602 kHz
	(with the interval set at
	9 kHz)
Other models:	531 – 1,602 kHz
	(with the interval set at
	9 kHz)
	530 – 1,710 kHz
	(with the interval set at
	10 kHz)
Antenna	AM loop antenna
Antenna terminals	External antenna terminal
Intermediate frequency	450 kHz

General

Power requirements
US, Cnadian models:	120 V AC, 60 Hz
AEP, UK models:	230 V AC, 50/60 Hz
Australian model:	220 – 240 V AC, 50/60 Hz
Mexican model:	120 V AC, 60 Hz
Other models:	110 – 120 V or 220 – 240 V AC, 50/
	60 Hz
	Adjustable with voltage selector
Power consumption
US model:	160 watts
Canadian model:	180 watts
AEP, UK models:	160 watts
Other models:	160 watts
Dimensions (w/h/d)	Approx. 280 x 325 x 390 mm
Mass
US model:	Approx. 9.2 kg
Canadian model:	Approx. 9.2 kg
AEP, UK models:	Approx. 9.2 kg
Other model:	Approx. 9.1 kg
Supplied accessories:	AM loop antenna (1)
	FM lead antenna (1)
	Remote Commander (1)
	Speaker cords (2)
	Center speaker pads (4)

Design and specifications are subject to change without notice.

SAFETY-RELATED COMPONENT 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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0

SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

	TABLE OF CONTENTS
1.	SERVICING NOTES ...............................................	3
2.	GENERAL
	Location of Controls .......................................................	4
	Setting the Time ..............................................................	5
3.	DISASSEMBLY .........................................................	6

4.DIAGRAMS

4-1. Note for Printed Wiring Boards and
	Schematic Diagrams	.......................................................		11
4-2.	Schematic Diagram	– CD Section (1/4) – .....................		12
4-3.	Schematic Diagram	– CD Section (2/4) – .....................		13
4-4.	Schematic Diagram	– CD Section (3/4) – .....................		14
4-5.	Schematic Diagram	– CD Section (4/4) – .....................		15
4-6.	Printed Wiring Boards		– CD Section – .........................	16
4-7.	Printed Wiring Boards		– MAIN Section – ....................	17
4-8.	Schematic Diagram – MAIN Section (1/4) – ................			18
4-9.	Schematic Diagram – MAIN Section (2/4) – ................			19
4-10.	Schematic Diagram – MAIN Section (3/4) – ................			20
4-11. Schematic Diagram – MAIN Section (4/4) – ................				21
4-12.	Printed Wiring Boards – PANEL Section – ..................			22
4-13. Schematic Diagram – PANEL Section – .......................				23
4-14. Printed Wiring Boards
	– AMP/POWER SUPPLY Section – .............................			24
4-15.	Schematic Diagram – FRONT AMP Section – ............			25
4-16.	Schematic Diagram
	– CENTER/REAR AMP Section – .................................			26
4-17.	Schematic Diagram – POWER SUPPLY Section – ......			27
5.	EXPLODED VIEWS ................................................			33
6.	ELECTRICAL PARTS LIST ...............................			39

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 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.

CAUTION

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

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

2

SAFETY CHECK-OUT

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.

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 lowvoltage 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)

To Exposed Metal

Parts on Set

					AC
0.15 µ F				1.5 kΩ	voltmeter
					(0.75 V)

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

The following caution label is located inside the unit.

SECTION 1

SERVICING NOTES

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 flexible 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 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.

• MODEL IDENTIFICATION

– Rear Panel –

	Power Voltage Indication
Model		Power Voltage Indication
US model	AC: 120 V - 60 Hz 160 W
Canadian model	AC: 120 V - 60 Hz 180 W
AEP, UK models	AC: 230 V - 50/60 Hz 160 W
Australian model	AC: 220 – 240 V - 50/60 Hz 160 W
Mexican model	AC: 120 V - 50/60 Hz 160 W
Other models	AC: 110 – 120 V/220 – 240 V -50/60 Hz 160 W

3

SECTION 2 GENERAL

• LOCATION OF CONTROLS

– Front View –

1 TIMER indicator

2 I/1button and indicator

3 DISPLAY button

4 SPECTRUM button

5 GROOVE button and indicator

6 FILE SELECT button

7 PHONES jack

8 ENTER button

9 –, .button

0 DISC SKIP EX-CHANGE button qa xbutton

qs DISC 1 button

qd hHbutton and indicator qf DISC 2 button

qg DISC 3 button qh Xbutton

qj ZOPEN/CLOSE button qk >, + button

	9qa qd qgqj
	0 qsqfqhqk
1
2	ql
3	w;
4	wa	ws
	wd
5

6	wf	wg
7	wh
8

wj wl ea ed wke; es

ql PLAY MODE, DIRECTION button (US, Canadian, E, Australian models) PLAY MODE, PTY/DIRECTION button (AEP, UK models)

w; REPEAT, STEREO/MONO button wa EDIT, TUNER MEMORY button ws VOLUME knob

wd jJbutton

wf REC button and indicator

wg REC PAUSE button and indicator wh CD SYNC button

wj MD (VIDEO) button and indicator

wk DOLBY PRO LOGIC button and indicator wl TAPE A/B button and indicator

e; DVD 5.1CH button and indicator ea CD button and indicator

es DSP button and indicator

ed TUNER/BAND button and indicator

– Rear View –

12345 67 89	1	FM ANTENNA jack or terminals
	2	AM ANTENNA terminals
	3	WOOFER OUT jack
	4	MD/VIDEO IN jacks
	5	DVD INPUT jacks
	6	CENTER SPEAKER terminals
	7	REAR SPEAKER terminals
	8	FRONT SPEAKER terminals
	9	CD DIGITAL OUT (OPTICAL) connector
	0	VOLTAGE SELECTOR switch (E model)

0

4

Step 3: Setting the time

You must set the time before using the timer functions.

The clock uses a 24-hour system on the European model, and a 12-hour system on other models.

The 12-hour system is used for illustration purposes.

2,4

3,5

1

1 Press CLOCK/TIMER SET.

The hour indication flashes.

This section is extracted from instruction manual.

2 Press .or >repeatedly to set the hour.

3 Press ENTER.

The minute indication flashes.

4 Press .or >repeatedly to set the minute.

5 Press ENTER.

The clock starts working.

Tip

If you make a mistake, start over from step 1.

To change the time

The previous explanation shows how to set the time while the power is off. To change the time while the power is on, do the following:

1Press CLOCK/TIMER SET.

2Press .or >repeatedly to select SET CLOCK.

3Press ENTER.

4Perform steps 2 through 5 above.

Notes

•The clock settings are canceled when you disconnect the power cord or if a power failure occurs.

•For MHC-BX6AV, you cannot set the time in the Power Saving Mode (see page 12).

9

5

SECTION 3

DISASSEMBLY

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

CD DOOR

2 five claws

3 CD door

1 Pull out the CD tray.

4 Push the CD tray.

CD ASS’Y

8 CD ass'y

	6 wire (flat type) (22core)	CD TRAY (page 9)
	(CN705)
		3
	1 screw
	(M3 × 12)
		2 two screws
		(BVTP3 × 12)
		5 connector
		(CN703)
	4 four claws	7 harness (6core)
		(CN304)
		1 screw
		(M3 × 12)

6

FRONT PANEL SECTION

	4 screw (M3 × 12)
	1 connector
	(CN502)
	1 two connectors	3 ten screws
	(CN302, 305)
		(BVTP3	× 10)

1 connector (CN301)

4 screw (M3 × 12)

5 front panel section

2 three screws (BVTP3 × 12)

MAIN BOARD

		9 MAIN board
	3 two screws		2 harness (5core)
	(BVTP3 ×	12)
			(CN303)

5 two claws

6 main PC holder (L)

3 two screws

(BVTP3 × 12)

4 connector

(CN101)

7 two claws

8 main PC holder (R)

1 two connectors

7

FRONT BOARD AND CENTER/REAR BOARD SECTION, DC FAN (M505)

3 four screws

(BVTP3 × 10)

5 three screws

(BVTP3 × 6)

qs FRONT board and CENTER/REAR board section

	7 connector	3 eight screws
		(BVTP3	× 10)
	(CN505)

9 holder

8 four screws

(3 × 30)

6 rear cover

5 three screws (BVTP3 × 6)

4

1 connector

9 holder

(CN501)

qa DC fan (M505)

0 main chassis holder

2 three screws (PTPWH4 × 10)

MECH DECK (CWL-44-RR)

1 six screws (BVTP3 × 8)

2 harness

3 mech deck (CWL-44-RR)

8

CD TRAY	1 two screws
	(KTP3 × 8)

4 screw (BTP3 × 10)

5 bracket

8 CD tray

DECORD BOARD

6 DECORD board

1wire (flat type) (5core) (CN706)

3 connector (CN707)

5 connector (CN702)

2 top cabinet

1 two screws (KTP3 × 8)

3wire (flat type) (5core) (CN06)

6 screw (BTP3 × 10)

7 bracket

4three screws (BTP2.6 × 6)

2wire (flat type) (15core) (CN701)

9

BASE UNIT

4 screw (PTPWH3 × 8)

5 UD-cam

8 spring

2 flange screw

3 UD-gear

7 spring

6 spring

	1 two screws
9 base unit	(PTPWH3 × 10)

CASSETTE LID

cassette door

(Note: Four claws are used.)

10

SECTION 4

DIAGRAMS

4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

•Y: parts extracted from the conductor side.

•b: Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Note on Schematic Diagram:

•All capacitors are in µF unless otherwise noted. U: µF, pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

•If a numeric value of capacitor is a decimal function, the preceding zero may be omitted.

(For example, .1 expresses 0.1)

•All resistors are in Ω and 1/4 W or less unless otherwise specified.

•f : internal component.

•2: nonflammable resistor.

•C: panel designation.

Note:	Note:
The components identi-	Les composants identifiés par
fied by mark 0or dotted	une marque 0sont critiques
line with mark 0are criti-	pour la sécurité.
cal for safety.	Ne les remplacer que par une
Replace only with part	pièce portant le numéro
number specified.	spécifié.

•U : B+ Line.

•V : B– Line.

•H: adjustment for repair.

•Voltages are taken with a VOM (Input impedance 10 MΩ ). Voltage variations may be noted due to normal production tolerances.

•Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production tolerances.

•Circled numbers refer to waveforms.

•Signal path.

F : FM f : AM

E : TAPE PLAY (DECK A) d : TAPE PLAY (DECK B)

G : TAPE REC

J : CD PLAY (ANALOG OUT) c : CD PLAY (DIGITAL OUT)

•Abbreviation

CND : Canadian model

• Circuit Boards Location

SW D board

SW B board

SW C board

DECORD board

MOTOR board

SW A board

PHOTO SOCKET board

MAIN board

FRONT board

PANEL board

H/P board

CENTER/REAR board

BACK UP board

11 11

HCD-BX6AV/DX6AV

4-2. SCHEMATIC DIAGRAM – CD Section (1/4) – • See page 28 for Waveforms. • See page 29 for IC Block Diagram.

1			2	3	4	5		6		7	8		9
A
							DECORD BOARD			(1/4)			Q701
											AUTOMATIC POWER
												CONTROL
B											2.4
												5
								B+				4.8
C
		B+		10
D				9
				8
				7			CN701
							15P
E				6

B+

F

G

	0
	OPTICAL
H	PICK-UP
	BLOCK	100V
	(OPTIMA-7)
		100V
I		100V

	J	C737
		.01U

K

05

10

11

12

13

14

15

16

C701

47

16V

							C704
							0.033
							100V					100V
									100V					100V
	2.5		4.8	2.6	1.8		1.8		2.5 1.2				4.3 1.6
	2.5	0										2.8			0.1
															5
2.5							2								0
2.5															5
															5
	3														0
2.5															5
1.8															5
2.5															5
1.9															4.9
															1.3
2.4						IC701									2.5
2.3															2.5
	1		RF AMP, FOCUS/TRACKING
2.5															2.5
					ERROR AMP
1.9
	100V
	2.6 2.6	2.3 2.4		2.2	2.5		2.5	50V			100V	2.5	0.8	2.5	2.5
									2.7		0.033
												2.4
		0.1 100V		0.1 100V		100V

100V

100V

B+

B+

1 (Page 13)

	B+	DECORD
		BOARD
		(2/4)

2 DECORD BOARD (3/4)

(Page 14)

12 12

•Voltages and waveforms are dc with respect to ground under no-signal conditions.

no mark : CD PLAY

The components identified by mark 0or dotted	Les composants identifiés par une marque 0sont
line with mark 0are critical for safety.	critiques pour la sécurité. Ne les remplacer que
Replace only with part number specified.	par une pièce portant le numéro spécifié.

4-3. SCHEMATIC DIAGRAM – CD Section (2/4) –
1	2	3	4	5	6	7	8	9	10	11	12

A	DECORD	SW D BOARD	CN16_	CN16	SW C	SW A		MOTOR BOARD
			3P	3P	BOARD	BOARD		M103 CN19
	BOARD
								2P
	(2/4)							DISC
								TABLE TURN
								C01
B								50
					S02		CN18
								CN18
		S01				S04	2P
					OPEN/CLOSE
		OPTICAL PICK-UP				TURN TABLE		2P
		UP/DOWN DETECT			DETECT	OPERATION
						DETECT
C		CN05_						CN06_
		5P
								5P
					M104
		CN707			DISC TRAY
					SLIDE
		7P
D								CN706
				35V				5P
					B+
E

F

G	1
	DECORD
	BOARD
	(1/4)
	(Page
H	12)
																Q704
													B+			REGULATOR
				B+
													4.9			8		B+
I	12K	12K	12K								0
			0								5		0		5.6B2S-UDZ	0
			0								0
J														D706
												0
			0								0
			0									4.3
K			5.7									0.6
						B+	5.7					0
	3														Q712
									IC704					REGULATOR
	DECORD												CONTROL SWITCH
L
								DISC TRAY SLIDE/
	BOARD
	(3/4)
								DISC TRAY TURN MOTOR
	(Page
									CONTROL
	14)
	05

M

4	DECORD	(Page 15)
	BOARD (4/4)

13 13

HCD-BX6AV/DX6AV

13

14

15

16

17

SW B

CN19 BOARD

2P

S03

TURN TABLE

POSITION

DETECT

B+

CLOK

	A (Page 23)
	PANEL
1	BOARD
	CN605

PIC DOWN

DISC COUNT

CN705

22P

CN704

6P

B+

+7.5V

0.022

B (Page 20)

MAIN

BOARD (3/4)

CN304

B+

•Voltages are dc with respect to ground under no-signal conditions.

no mark : CD PLAY

HCD-BX6AV/DX6AV

4-4. SCHEMATIC DIAGRAM – CD Section (3/4) –								• See page 29 for IC Block Diagram.
1		2		3		4		5		6		7			8
												(Page 12)
A											2				DECORD
															BOARD (1/4)

B					DECORD BOARD				(3/4)
										B+
C																C740A
																0.0047
																2.8
																2.8
D															C740B		2.8		2.8
															0.0047
							CN702_		CN702							2.8		0	2.8
							6P		6P									0
E																2.5		4
							M101
							(SPINDLE)									2.5
																8
F	M102												IC703			8
						S05									B+			2.5
	(SLED)									FOCUS/TRACKING
					(LIMIT)
												COIL DRIVE,						8
												SPINDLE/SLED/
										DISC TABLE SLIDE/								2.5		B+
											DISC TRAY TURN
G
												MOTOR DRIVE				0		2.5
																0		2.8	C740D
																			0.0047
		PHOTO SOCKET														2.8		2.8
H		BOARD														2.8		2.8
										B+
					2.6
				3														2.8
		PH701		2	4.9
I		TOTX178
				1
								CN703
		CD DIGITAL					CN703_
								3P
		OUT (OPTICAL)					3P												C740C
																			0.0047
J		OPTICAL		PH701
			TRANSCEIVER

K

05

9

10

11

12

13

14

DECORD

3 BOARD (2/4)

(Page 13)

B+

18K

18K

	5
100V	DECORD
	BOARD
	(4/4)

(Page 15)

B+

100V

100V

B+

B+

•Voltages are dc with respect to ground under no-signal conditions.

no mark : CD PLAY

14 14

HCD-BX6AV/DX6AV

4-5. SCHEMATIC DIAGRAM – CD Section (4/4) – • See page 28 for Waveforms. • See page 29 for IC Block Diagram.

	1	2		3			4				5						6	7	8	9	10	11	12	13	14	15	15	16
																				4	DECORD	(Page 13)
A																					BOARD (2/4)
		DECORD
B		BOARD		(4/4)													C780
																		B+
							B+
C		B+																B+
					4.9	0.1	4.8	5	0	0.1	0.1 0.1	5	5	0	0	0	5	0.022
				2.4
D					4													4.9
										IC702								5
							DIGITAL SIGNAL PROCESSOR,											4.9
							CLV SERVO, D/A CONVERTER											2.2
E																		2.2
			4.8															2.2
			2.5
			2.6														7
			2.5															2.8
																		2.1
F			2.6															4.9
	5		4.9
			2.5		2													2.2
	DECORD
			0.8															2.1
	BOARD
	(3/4)		2.5															2.1
	(Page 14)
			2.6		6													4.9
G		5																0
			2.5															4.9	B+	B+
							4.9					2.6					0
				0	2.6				B+						0
H
																			0.022								B+
																				B+
I
J
		05

• Voltages and waveforms are dc with respect to ground under no-signal conditions.

no mark : CD PLAY

15 15

HCD-BX6AV/DX6AV

4-6.

PRINTED WIRING BOARDS – CD Section –

• See page 11 for Circuit Boards Location.

1

2

3

4

5

6

7

8

9

10

11

12

A

SW B BOARD

SW D BOARD

SW C BOARD

MOTOR BOARD

CN16

M103

CN19

(DISC TABLE TURN)CN19

1 2

S03

1

2

1

11

3

M

(11)

3

CN18

2

1

S01

1

1-674-789-

S02

OPTICAL

C01

CN16

CN05

B

TURN TABLE

SW A BOARD

5

1

PICK-UP

OPEN/CLOSE

DETECT

DETECT

4

2

POSITION

CN18

S04

UP/DOWN

DETECT

1 2

11

11

5

1

CN06

11

(11)

11

1-674-791-

(11)

(11)

1-674-792-

1-674-788-

A

PANEL BOARD

1-674-790-

(11)

TURN TABLE

CN605

OPERATION

(Page 22)

M

M104

C

DETECT

DECORD BOARD

(DISC TRAY SLIDE)

PHOTO SOCKET BOARD

CN705

D

• Semiconductor

PH701

Location

CD DIGITAL OUT (OPTICAL)

E

Ref. No.

Location

D703

G-7

D706

F-6

R788

IC701

H-9

IC702

E-10

IC703

I-6

IC704

F-7

F

PH701

D-11

Q701

I-8

Q704

F-6

Q712

F-6

MAIN BOARD

B

• Semiconductor Location

CN304

Ref. No.

Location

Ref. No.

Location

Ref. No.

Location

G

(Page 17)

D001

G-14

D421

J-13

Q213

I-7

D002

G-14

D422

J-12

Q214

I-7

D101

B-14

D423

J-10

Q251

J-5

D102

A-14

Q252

J-8

D103

C-14

IC102

C-11

Q253

I-8

D104

C-14

IC103

A-11

Q303

E-13

D106

C-12

IC201

I-6

Q304

E-13

H

D107

D-13

IC301

E-6

Q305

D-9

D201

H-4

IC302

C-5

Q308

G-4

D202

H-4

IC303

E-3

Q309

G-4

D203

H-4

IC304

D-13

Q312

F-3

D204

H-4

IC305

E-4

Q313

F-4

CD

D205

I-7

IC306

H-8

Q316

D-8

MECHANISM

BLOCK

D303

E-8

IC307

E-11

Q317

D-7

D305

D-9

Q319

D-9

11

D306

D-8

Q101

B-12

Q320

D-8

I

(11)

D307

E-11

Q103

B-13

Q321

D-14

D308

E-11

Q104

D-13

Q401

I-9

D309

C-6

Q109

B-8

Q403

I-8

05

D402

F-13

Q110

B-8

Q405

I-8

D403

H-13

Q201

I-4

Q406

H-9

BLOCK

D405

J-9

Q202

I-4

Q411

E-10

(OPTIMA-7)

D407

J-8

Q203

I-4

Q412

J-9

D409

G-9

Q204

I-4

Q413

J-9

D410

G-9

Q205

I-4

Q414

J-9

D411

H-11

Q206

I-4

Q415

I-9

D412

I-11

Q207

I-4

Q416

J-9

D417

E-9

Q208

H-4

Q419

J-3

D418

G-3

Q209

H-4

Q420

J-3

D419

I-3

Q210

G-6

16

16

D420

J-13

Q211

G-5

HCD-BX6AV/DX6AV

4-7. PRINTED WIRING BOARDS – MAIN Section – • See page 11 for Circuit Boards Location.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

TP1

MAIN BOARD

FOR

ADJUSTMENT

A

(AEP, UK)

FM 75Ω

4

5

8

75Ω

B

FM

JK101

ANTENNA

(EXCEPT AEP, UK)

C

17 15 12

9

6

4

1

AM

18

13

10

7

2

C

19 16 14

11

8

5

3

PANEL BOARD

CN102

(Page 22)

JK303

R130

BCE

WOOFER OUT

D

1

R

MD/VIDEO IN

C356A

L

E

R

C355A

FRONT

L

JK301

R

REAR

DVD INPUT

F

L

WOOFER

4

9

CENTER

D002

H

BACK UP

(Page 24)

G

BOARD

+

CN502

D

CENTER SPEAKER

–

PANEL BOARD

1

(IMPEDANCE USE 6-16Ω

)

CN101

(Page 22)

+

R

JK402

1

–

REAR SPEAKER

H

+

(IMPEDANCE USE 6-16Ω

)

L

–

H/P BOARD

6

3

5

5

2

4

I

1

1

+

R

3

1

4

–

JK401

FRONT SPEAKER

1

3

2

+

(IMPEDANCE USE 6-16Ω

)

L

–

J

6

5

6

K

05

B

E

F

G

HRPE201

HP201

(REC/PB/ERASE)

(PB)

DECORD BOARD

CENTER/REAR

FRONT

CENTER/REAR

CN704

BOARD

BOARD

BOARD

(Page 16)

CN302

CN301

CN305

(Page 24)

(Page 24)

(Page 24)

17

17

HCD-BX6AV/DX6AV

4-8. SCHEMATIC DIAGRAM – MAIN Section (1/4) – • See page 28 for Waveform. • See page 29 for IC Block Diagram.

(Page 19)

(Page 23)

• Voltages and waveforms are dc with respect to ground		(Page 20)
under no-signal (detuned) conditions.
no mark : FM
(	) : AM

18 18

HCD-BX6AV/DX6AV

4-9. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 28 for Waveforms. • See page 29 for IC Block Diagram.

(Page 18)

(Page 20)

(Page 21)

19 19

(Page 23)

•Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

no mark : FM

[ ] : TAPE PLAY (DECK A)

< > : TAPE PLAY (DECK B)

: TAPE REC

HCD-BX6AV/DX6AV

4-10. SCHEMATIC DIAGRAM – MAIN Section (3/4) –

(Page 18)

(Page 19)

(Page 13)

(Page 21)

•Voltages are dc with respect to ground under no-signal (detuned) conditions.

no mark : FM

20 20