Sharp CDBK-310-V Service manual

MANUAL

NTSC/PAL

CD-BK310V

SERVICE MANUAL

No. S6137CDBK310V

VIDEO CD MINI SYSTEM

MODEL CD-BK310V

CD-BK310V Video CD Mini System consisting of

CD-BK310V (main unit) and CP-BK310 (speaker system).

•In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used.

CONTENTS
	Page
SAFETY PRECAUTION FOR SERVICE MANUAL ...........................................................................................................	2
VOLTAGE SELECTION .....................................................................................................................................................	2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR .................................................................................................	3
SPECIFICATIONS .............................................................................................................................................................	3
NAMES OF PARTS ...........................................................................................................................................................	4
OPERATION MANUAL ......................................................................................................................................................	6
DISASSEMBLY ..................................................................................................................................................................	9
REMOVING AND REINSTALLING THE MAIN PARTS ...................................................................................................	12
ADJUSTMENT .................................................................................................................................................................	13
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................	18
TYPES OF TRANSISTOR AND LED ................................................................................................................................	18
BLOCK DIAGRAM ...........................................................................................................................................................	19
SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD ................................................................................................	24
VOLTAGE ........................................................................................................................................................................	43
WAVEFORMS OF CD CIRCUIT ......................................................................................................................................	44
TROUBLESHOOTING .....................................................................................................................................................	45
FUNCTION TABLE OF IC ................................................................................................................................................	49
FL DISPLAY ......................................................................................................................................................................	60
REPLACEMENT PARTS LIST/EXPLODED VIEW

This document has been published to be used

SHARP CORPORATION– 1 –	for after sales service only.
	The contents are subject to change without notice.

CD-BK310V

SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS

THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES AGAINST EXPOSURE TO THE LASER BEAM.

1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC IN POSITION AND THE PICKUP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT LOOK INTO THE PICKUP LENS.

2-THE LASER POWER OUTPUT OF THE PICKUP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY PRESET BEFORE SHIPMENT.

DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING. 3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.

4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

Laser Diode Properties

Material: GaAIAs

Wavelength: 780 nm

Emission Duration: continuous

Laser Output: max. 0.6 mW

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO BEAM

OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA EJ

IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I

STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE. ALA

TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA EJ

IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE INN I

STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

VOLTAGE SELECTION

Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage as follows.

Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V-240 V AC).

– 2 –

CD-BK310V

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCA0003AW00				QACCJ0007AW00

QPLGA0003AWZZ QPLGA0004AWZZ

QACCB0011AW00

QACCE0010AW00

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

SPECIFICATIONS

CD-BK310V

General

Power source	AC 110/127/220/230 - 240 V, 50/60 Hz
Power consumption	210 W
Dimensions	Width: 270 mm (10-11/16")
	Height: 330 mm (13")
	Depth: 372 mm (14-11/16")
Weight	8.7 kg (19.2 lbs.)

Amplifier

Output power	MPO: 480 W (240 W + 240 W) (10 % T.H.D.)
	Main speaker (woofer and tweeter): 200 W (100 W + 100
	W)
	Subwoofer: 280 W (140 W + 140 W)
	RMS: 250 W (125 W + 125 W) (10 % T.H.D.)
	Main speaker (woofer and tweeter): 100 W (50 W + 50 W)
	Subwoofer: 150 W (75 W + 75 W)
	RMS: 188 W (94 W + 94 W) (0.9 % T.H.D.)
	Main speaker (woofer and tweeter): 72 W (36 W + 36 W)
	Subwoofer: 116 W (58 W + 58 W)
Output terminals	Speakers: 6 ohms
	Headphones: 16 - 50 ohms (recommended: 32 ohms)
Input terminals	Video/Auxiliary (audio signal): 500 mV/47 kohms
	Microphone: 1 mV/600 ohms

Video CD

Video output format

PAL/NTSC

CD player

Type	3-disc multi-play compact disc player
Signal readout	Non-contact, 3-beam semiconductor laser pickup
D/A converter	1-bit D/A converter
Frequency response	20 - 20,000 Hz
Dynamic range	90 dB (1 kHz)

Tuner

Frequency range	FM: 88 - 108 MHz
	AM: 531 - 1,602 kHz

Cassette deck

Frequency response	50 - 14,000 Hz (Normal tape)
Signal/noise ratio	55 dB (TAPE 1, playback)
	50 dB (TAPE 2, recording/playback)
Wow and flutter	0.3 % (WRMS)

CP-BK310

Type	3-way type speaker system
	5 cm (2") Tweeter
	13 cm (5-1/4") Woofer
	16 cm (6-1/2") Subwoofer
Maximum input power	250 W
(Total)
Rated input power	125 W
(Total)
Impedance	6 ohms
Dimensions	Width: 287 mm (11-5/16")
	Height: 330 mm (13")
	Depth: 281 mm (11-1/16")
Weight	5.0 kg (11.1 lbs.)/each

Specifications for this model are subject to change without prior notice.

– 3 –

CD-BK310V

NAMES OF PARTS

CD-BK310V

Front panel

1.Video CD/CD/MP3 Disc Tray

2.Timer Set Indicator

3.On/Stand-by Button

4.Tape 2 Cassette Compartment

5.Tape 1 Cassette Compartment

6.Equalizer Mode Select Button

7.Volume Control

8.Extra Bass/Demo Mode Button

9.Video CD/CD/MP3 Disc Tray Open/Close Button 10.Video CD/CD/MP3 Disc Number Select Buttons

(with Indicator)

11.Video CD/CD/MP3 Disc Skip Button 12.Tape 2 Reverse Play Button (with Indicator) 13.Video CD/CD/MP3 Disc Button

14.Karaoke Mode Button 15.Tuner (Band) Button

16.Video CD Playback Control Button 17.Video CD On Screen Display On/Off Button 18.Video CD Digest Button

19.Tuning and Time Up Button 20.Dimmer Button

21.Clock Button 22.Timer/Sleep Button 23.Headphone Socket 24.Video/Auxiliary Button 25.Tape (1 2) Button

26.Video CD Stop or Return, CD/MP3 Disc/Tape Stop Button (with Indicator)

27.Video CD Play or Repeat or Select or Resume, CD/MP3 Disc Play or Repeat, Tape 1 Play, Tape 2 Forward Play Button

(with Indicator)

28.Tape 2 Reverse Mode Select Button

29.Video CD Skip or Next, CD/MP3 Disc Track Up or Fast Forward, Tape 2 Fast Wind, Tuner Preset Up Button

30.Tuning and Time Down Button 31.Memory/Set Button

32.Tape 2 Record Pause Button

33.Video CD Skip or Previous, CD/MP3 Disc Track Down or Fast Reverse, Tape 2 Fast Wind, Tuner Preset Down Button

34.Microphone Level Control 35.Microphone Socket

6	7	8	9

10 11

1

2

3

4

5

12	13		14		15		16		17		18
19											24
											25
20
											26
21											27
22											28
											29
23
30		31		32		33		34		35

Display

1.Extra Bass Indicator

2.FM Stereo Mode Indicator

3.FM Stereo Receiving Indicator

4.Karaoke Mode Indicator

5.Video CD/CD/MP3 Disc Repeat Play Indicator

6.Video CD/CD/MP3 Disc Pause Indicator

7.Video CD/CD/MP3 Disc Play Indicator

8.Tape 2 Record Indicator

9.Tape Reverse Mode Indicator

10.Video CD/CD/MP3 Disc Number Indicators 11.Timer Play Indicator

12.Memory Indicator

13.Tape 2 Reverse Play Indicator

14.Tape 1 Play or Tape 2 Forward Play Indicator 15.Sleep Indicator

16.Timer Recording Indicator

17.Spectrum Analyser/Volume Level Indicator

1		8		10
				11
2		9
				12
3 4 5 6	7	17	13	14 15 16

17

17

– 4 –

CD-BK310V

Rear panel

1.FM 75 Ohms Aerial Terminal

2.FM Aerial Earth Terminal

3.AM Loop Aerial Socket

4.Span Selector Switch

5.Video/Auxiliary (Audio Signal) Input Sockets

6.Video Output Socket

7.Speaker Terminals

8.AC Power Lead

9.AC Voltage Selector

Remote control

1.Remote Control Transmitter

2.Video CD/CD/MP3 Disc Number Select Buttons

3.Echo Level Up and Down Buttons

4.Karaoke Mode Button

5.Video CD Auto/On Button

6.Video CD Playback Control Auto/Off Button

7.Video CD On Screen Display On/Off Button

8.Video CD/CD/MP3 Disc Clear Button

9.Video CD Digest/Time Search Button

10.Video CD Skip or Previous, CD/MP3 Disc Track Down or Fast Reverse, Tape 2 Fast Wind, Tuner Preset Down Button

11.Video CD Bookmark Button 12.Tape 2 Reverse Play Button

13.PAL/NTSC Select Button 14.Video CD/CD/MP3 Disc Button 15.Tape (12) Button 16.On/Stand-by Button

17.MP3 Disc Display Button

18.Video CD/CD/MP3 Disc Direct Search Buttons 19.Video CD/CD/MP3 Disc Random Button 20.Video CD/CD/MP3 Disc Memory Button

21.Video CD Skip or Next, CD/MP3 Disc Track Up or Fast Forward, Tape 2 Fast Wind, Tuner Preset Up Button

22.Video CD/CD/MP3 Disc Pause Button

23.Video CD Play or Repeat or Select or Resume, CD/MP3 Disc Play or Repeat, Tape 1 Play, Tape 2 Forward Play Button

24.Video CD Stop or Return, CD/MP3 Disc/Tape Stop Button 25.Extra Bass Button

26.Equalizer Mode Select Button

27.Volume Up and Down Buttons

28.Tape 2 Record Pause Button

29.Tuner (Band) Button

30.Video/Auxiliary Button

Buttons with " " mark in the illustration can be operated on the remote control only.

Other buttons can be operated both on the main unit and the remote control.

CD-BK310V

		1
		2
		3
		4
		5
		6
9	8	7

	1
	2	16
	3	17
	4	18
	5
	6	19
	7
		20
	8	21
	9	22
		23
	10
		24
	11
	12	25
		26
	13
		27
	14
	15	28
		29
		30

– 5 –

CD-BK310V

CP-BK310

Speaker system

1.Subwoofer

2.Bass Reflex Duct

3.Tweeter

4.Woofer

5.Speaker wire for SUBWOOFER terminals

6.Speaker wire for MAIN terminal

3

1

2	4	5
		6

OPERATION MANUAL

Setting the AC voltage selector

Setting the FM/AM span selector

Check the setting of the AC voltage selector located on the rear panel before plugging the unit into a wall socket. If necessary, adjust the selector to correspond to the AC power voltage used in your area.

Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).

Connecting the AC power lead

After making all connections, plug the unit. If you plug the unit first, the unit will enter the demonstration mode.

Note:

Unplug the AC power lead from the wall socket if the unit will not be in use for a prolonged period of time.

AC Plug Adaptor

In areas (or countries) where a wall socket as shown in illustration is used, connect the unit using the AC plug adaptor supplied with the unit, as illustrated. The AC plug adaptor is not included in areas where the wall socket and AC power plug can be directly connected (see illustration ).

1

2

The International Telecommunication Union (ITU) has established that member countries should maintain either a 100 kHz or a 50 kHz interval between broadcasting frequencies of FM stations and 10 kHz or 9 kHz for AM station. The illustration shows the 50/9 kHz zones (regions 1 and 3), and the 100/10 kHz zone (region 2).

Before using the unit, set the SPAN SELECTOR switch (on the rear panel) to the interval (span) of your area.

To change the tuning zone:

1Press the ON/STAND-BY button to enter the stand-by mode.

2Set the SPAN SELECTOR switch (on the rear panel) as follows.

For 50 kHz FM interval (9 kHz in AM) 50/9

For 100 kHz FM interval (10 kHz in AM) 100/10

3Whilst pressing down the button and the X-BASS/DEMO button, press the ON/ STAND-BY button until "CLEAR AL" appears.

Caution:

This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD programme.

– 6 –

CD-BK310V

Setting the Clock

In this example, the clock is set for the 24-hour (0:00) display.

1 Press the ON/STAND-BY button to turn the power on.

2 Press the CLOCK button and within 5 seconds, press the MEMORY/SET button.

3 Press the TUNING/TIME ( or ) button to select 24-hour or 12hour display and then press the MEMORY/SET button.

"0:00" The 24-hour display will appear. (0:00 - 23:59)

"AM 12:00" The 12-hour display will appear. (AM 12:00 - PM 11:59)

"AM 0:00" The 12-hour display will appear. (AM 0:00 - PM 11:59)

Note that this can only be set when the unit is first installed or it has been reset.

4 Press the TUNING/TIME ( or) button to adjust the hour and then press the MEMORY/SET button.

Press the TUNING/TIME ( or ) button once to advance the time by 1 hour. Hold it down to advance continuously.

When the 12-hour display is selected, "AM" will change automatically to "PM".

5 Press the TUNING/TIME ( or ) button to adjust the minutes and then press the MEMORY/SET button.

Press the TUNING/TIME ( or ) button once to advance the time by 1 minute. Hold it down to change the time in 5-minute intervals.

The hour will not advance even if minutes advance from "59" to "00".

The clock begins counting from "0" seconds. (Seconds are not displayed.) The time display will disappear after a few seconds.

To confirm the time display:

Press the CLOCK button.

The time display will appear for about 5 seconds.

Note:

The "CLOCK" or time will flash at the push of the CLOCK button when the AC power supply is restored after a power failure or unplugging the unit.

Readjust the clock as follows.

To readjust the clock:

Perform "Setting the Clock" from the beginning. If the time display is flashing, step 3 (for selecting the 24-hour or 12-hour display) will be skipped.

To change the 24-hour or 12-hour display:

1Clear all the programmed contents.

2Perform "Setting the Clock" from the beginning.

Remote Control

Test of the remote control

Face the remote control directly to the remote sensor on the unit.

The remote control can be used within the range shown below:

Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the music.

Remote sensor

0.2 m - 6 m (8" - 20')

– 7 –

CD-BK310V

Troubleshooting Chart

Many potential problems can be resolved by the owner without calling a service technician.

If something is wrong with this product, check the following before calling your authorised SHARP dealer or service centre.

General

		Symptom	Possible cause
		The clock is not on time.	Did a power failure occur? Reset the
			clock.
		When a button is pressed, the unit	Set this unit to the power stand-by mode
		does not respond.	and then turn it back on.
			If the unit still malfunctions, reset it.
		No sound is heard.	Is the volume level set to "0"?
			Are the headphones connected?
			Are the speaker wires disconnected?
			Is the karaoke mode set to "L-CH", "R-CH"
			or "V-CANCEL"?
		Video CD
		Symptom	Possible cause
		The picture is not displayed during	Is the TV unplugged?
		playback.	Is the unit connected improperly?
			Is the input selector on the TV set to other
			than "VCR"?
			Is the unit being played without selecting
			video CD?
		The picture quality is poor, or it is	Is the disc very dirty?
		distorted.

Tuner

Symptom	Possible cause
Radio makes unusual noise con-	Is the unit placed near the TV or comput-
secutively.	er?
	Is the FM aerial or AM loop aerial placed
	properly? Move the AC power lead away
	from the aerial if located near.

Cassette deck

Symptom	Possible cause
Cannot record.	Is the erase-prevention tab removed?
Cannot record tracks with proper	Is it a normal tape? (You cannot record on
sound quality.	a metal or CrO tape.)
Cannot erase completely.
Sound skipping.	Is there any slack?
	Is the tape stretched?
Cannot hear treble.	Are the capstans, pinch rollers, or heads
Sound fluctuation.	dirty?
Cannot remove the tape.	If a power failure occurs during playback,
	the heads remain engaged with the tape.
	Do not open the compartment forcibly.
	Wait until electricity resumes.

Karaoke

Symptom	Possible cause
The vocal part of a multiplexed	Is the karaoke mode set to "L-CH", "R-CH"
disc is not heard.	or "V-CANCEL"?

CD player

Symptom	Possible cause
Playback does not start.	Is the disc loaded upside down?
Playback stops in the middle or is	Does the disc satisfy the standards?
not performed properly.	Is the disc distorted or scratched?
Playback sounds are skipped, or	Is the unit located near excessive vibra-
stopped in the middle of a track.	tions?
	Is the disc very dirty?
	Has condensation formed inside the unit?

Remote control

Symptom	Possible cause
The remote control does not oper-	Is the AC power lead of the unit plugged
ate.	in?
	Is the battery polarity respected?
	Are the batteries dead?
	Is the distance or angle incorrect?
	Does the remote control sensor receive
	strong light ?

Troubleshooting Chart

If trouble occurs

When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction.

If such a problem occurs, do the following:

1Set the unit to the stand-by mode and turn the power on again.

2If the unit is not restored in the previous operation, unplug and plug in the unit, and then turn the power on.

Note:

If neither operation above restores the unit, clear all the memory by resetting it.

Clearing all the memory (reset)

1Press the ON/STAND-BY button to enter the power stand-by mode.

2Whilst pressing down the button and the X-BASS/DEMO button, press the ON/ STAND-BY button until "CLEAR AL" appears.

Caution:

This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD programme.

Before transporting the unit

1Press the ON/STAND-BY button to turn the power on.

2Press the CD/VIDEO CD button.

3Press theOPEN/CLOSE button to open the disc tray.

Remove all discs from the unit.

4Press theOPEN/CLOSE button to close the disc tray.

Make sure that "NO DISC" is displayed.

5Press the ON/STAND-BY button to enter the stand-by mode, and then unplug the AC power lead from the wall socket.

– 8 –

CD-BK310V

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:

1.Take cassette tape and compact disc out of the unit.

2.Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

3.Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling.

4.Take sufficient care on static electricity of integrated circuits and other circuits when servicing.

CD-BK310V

STEP	REMOVAL			PROCEDURE			FIGURE
1	Top Cabinet		1.	Screw .......................	(A1) x4		9-1
2	Side Panel		1.	Screw .......................	(B1) x8		9-1
	(Left/Right)
3	CD Player Unit/		1.	Turn on the power supply,		...	9-2
	CD Tray Cover			open the disc tray, take out
				the CD tray cover, and close.
				(Note 1)
			2.	Screw .......................	(C1) x1
			3.	Hook .........................	(C2) x3
			4.	Hook .........................	(C3) x2
			5.	Socket ......................	(C4) x4
4	Rear Panel with		1.	Screw .....................	(D1) x10		9-2
	Fan Motor		2.	Socket ......................	(D2) x1
5	Main PWB		1.	Screw .......................	(E1) x1		9-2
			2.	Flat Cable ................	(E2) x1		10-2
			3.	Socket ......................	(E3) x5		10-2,10-3
6	Amp. PWB		1.	Screw .......................	(F1) x5		10-3
			2.	Socket ......................	(F2) x2
			3.	PWB Holder .............	(F3) x2
			4.	Flat Wire ...................	(F4) x1
7	Front Panel		1.	Screw .......................	(G1) x1		10-3
8	Display PWB		1. Knob .........................		(H1) x1		10-4
			2.	Screw .....................	(H2) x12
			3.	Flat Cable ................	(H3) x1
9	Tape Mechanism		1.	Open the cassette holder.			10-4
			2.	Screw ........................	(J1) x5
10	Headphones PWB		1.	Screw .......................	(K1) x1		10-4
11	Mic PWB		1.	Screw .......................	(L1) x2		10-4
12	Turntable		1.	Hook ........................	(M1) x2		10-5
			2.	Cover ......................	(M2) x1
13	Disc Tray		1.	Turn fully the lock lever in the .			9-3
				arrow direction.
			2.	While holding the lock lever, rotate			10-1
				the cam gear until the cam gear
				rib engages with the clamp lever.
			3.	Push the slide chassis backward to			10-6
				engage the claw with the groove
				and remove it in the direction
				of the arrow. .................	(N1) x6
14	Video CD PWB		1.	Screw .......................	(P1) x1		11-1
	(Note 2)		2.	Hook .........................	(P2) x2
			3.	Socket ......................	(P3) x4
15	CD Mechanism		1. Hook .........................		(Q1) x2		11-2
			2.	Hook .........................	(Q2) x3

Note 1: How to open the changer manually. (Fig. 9-3)

1.In this state, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom.

2.While holding the lock lever, rotate the cam gear anticlockwise until the cam gear rib engages with the clamp lever. (Fig. 10-1)

3.After that, push forward the slide Chassis.

CD-BK310V

(A1) x 2

Top Cabinet

ø3 x 12mm

Side Panel (Right)

(B1) x 2 ø3 x 10mm

(B1) x 4 ø3 x 10mm

Rear

Panel Figure 9-1

(C4) x 4

1

Video

CD PWB

(C3) x 1

Pull

Rear

Panel

(C1) x 1 ø3 x 10mm

(D1) x 1

ø3 x 10mm

Transformer PWB

(D2) x 1
Amp.	Main PWB
PWB	(D1) x 7
	ø3 x 10mm

(A1) x 2 ø3 x 12mm

Side Panel (Left)

(B1) x 2 ø3 x 10mm

CD Tray Cover

(C2) x 3

1

2

CD Player

Unit

(C3) x 1

Front Panel

(E1) x 1 ø3 x 10mm

Lug Wire

(D1) x 2 ø3 x 10mm

Figure 9-2

Lock Lever

CD Player Unit

(Bottom View)

Figure9-3

Note 2:

1. After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of the connector so as to protect the optical pickup from electrostatic damage.

Note 3:

1.Be careful not to break the claw of the CD mechanism.

2.When fining back the cam gear assembly, let it lock by front movement.

– 9 –

CD-BK310V

Clamp Lever

CD Player Unit

(Top View)

Cam Gear Rib

		(H1) x 1
	Display PWB	(H3) x 1
		(L1) x 2
	(H2) x 12	ø3 x 10mm
	ø3 x 10mm
		Mic PWB
	Tape
	Mechanism	Front Panel
	Lug Wire
	(J1) x 5	Open
	ø3 x 10mm
		Cassette
		Holder

	Figure 10-1	(K1) x 1
		ø3 x 10mm
	(E3) x 1	Headphones
	(E3) x 1
		PWB
	Front Panel	Figure 10-4
Power PWB
(E2) x 1	(E3) x 1	(M2) x 1
	Mic PWB
Transformer		Turntable
PWB	Main PWB
	Main PWB
	(E3) x 1	Slide
		Chassis
		(M1) x 2
	Amp.
	PWB

	Figure 10-2
	(F1) x 2
	ø3 x 6mm	(F4) x 1
	(F1) x 2			CD Player Unit
	ø3 x 6mm	Headphones
		PWB		Figure 10-5
	(F2) x 2		Front	(N1) x 3
	Tape		Panel	3
	Mechanism
(E3) x 1
				2
(F3) x 1				1
Push	Push	(F3) x 1
		Push	Push	(N1) x 3
	(F1) x 1
	ø3 x 6mm	(G1) x 1
	Amp.
		ø3 x 10mm
	PWB
	Figure 10-3			Figure 10-6

– 10 –

			CD-BK310V
		CD	(Q2) x 3
		Mechanism
(P1) x 1	Video CD	Slide
ø3 x 8mm
		Chassis
	PWB		CD
(P3) x 2
			Mechanism
(P2) x 2		(Q1) x 1	(Q1) x 1 Chassis

(P3) x 2

Slide

Chassis

Figure 11-1

Figure 11-2

CP-BK310

STEP	REMOVAL	PROCEDURE		FIGURE
1	Side Panel/	1. Screw .....................	(A1) x4	11-3
	Front Panel	2. Hook .......................	(A2) x3
		3. Net ..........................	(A3) x1
		4. Caching Holder ......	(A4) x4
		5. Screw .....................	(A5) x4
2	Subwoofer	1. Screw .....................	(B1) x4	11-4
3	Woofer	1. Screw .....................	(C1) x4	11-4
4	Tweeter	1. Screw .....................	(D1) x2	11-4		(C1) x 4
						ø4 x 16mm
						(D1) x 2
						ø3 x 10mm
	(A4) x 2		(A3) x 1
				(A4) x 2	Woofer	Tweeter
	(A5) x 2
	ø4 x 20mm		(A5) x 2
			ø4 x 20mm
	Side Panel
			Fromt Panel

(A1) x 4	(B1) x 4
ø4 x 20mm
	ø4 x 16mm

Subwoofer

(A2) x 3

Figure 11-4

Figure 11-3

– 11 –

CD-BK310V

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 7 and 9 of the disassembly method to remove the tape mechanism.

How to remove the record/playback and erase heads (TAPE 2) (See Fig. 12-1)

1.When you remove the screws (A1) x 2 pcs., the recording/ playback head and three-dimensional head of the erasing head can be removed.

How to remove the playback head (TAPE 1) (See Fig. 12-2)

1.When you remove the screws (B1) x 2 pcs., the playback head.

How to remove the pinch roller (TAPE 1/2) (See Fig. 12-3)

1. Carefully bend the pinch roller pawl in the direction of the arrow <A>, and remove the pinch roller (C1) x 1 pc., in the direction of the arrow <B>.

Note:

When installing the pinch roller, pay attention to the spring mounting position.

How to remove the belt (TAPE 2) (See Fig. 12-4)

1.Remove the main belt (D1) x 1 pc., from the motor side.

2.Remove the FF/REW belt (D2) x 1 pc.

How to remove the belt (TAPE 1) (See Fig. 12-4)

1.Remove the main belt (E1) x 1 pc., from the motor side.

2.Remove the FF/REW belt (E2) x 1 pc.

How to remove the motor (See Fig. 12-5)

1. Remove the screws (F1) x 2 pcs., to remove the motor.

Tape

Motor

Clutch Ass'y

(F1) x 2

Ø2.6 x 5mm

TAPE 2

Clutch Ass'y

Record/Playback

Head

Erase Head

(A1) x 2 Ø2 x 6mm

Figure 12-1

TAPE 1

Clutch Ass'y

Playback

Head

(B1) x 1 Ø2 x 9mm

(B1) x 1 Ø2 x 5mm

Figure 12-2

		Pinch
		Roller
Pinch Roller		Pawl
(C1) x 1	Pull	Pull <A>
	<B>
	Figure 12-3
		Tape
	FF/REW	Motor
		Tape
TAPE 2	Roller	Motor	TAPE 1
FF/REW		TAPE 2	Main Belt
Belt			(E1) x 1
		Main Belt
(D2) x 1
		(D1) x 1
Main Belt			TAPE 1
(D1) x 1			FF/REW
Flywheel
			Belt
Ass'y	Main Belt		(E2) x 1
	(E1) x 1
		Flywheel	FF/REW
		Ass'y	Roller

Figure 12-5

Figure 12-4

– 12 –

CD MECHANISM SECTION

Perform steps 1, 2, 3, 12, 13, 14 and 15 of the disassembly method to remove the CD mechanism.

How to remove the CD loading motor (See Fig. 13-1)

1.Bend the hooks (A1) x 5 pcs., to remove the CD loading motor.

2.Remove the drive belt (A2) x 1pc.

	CD-BK310V
	CD Loading Motor
Slide	CD Loading
Chassis	Motor PWB
	(A1) x 1
	(A1) x 2
	(A1) x 2
	CD Loading
	Motor
	Pulley
	Drive Belt
	(A2) x 1
	Figure 13-1

How to remove the pickup (See Fig. 13-2)

1.Remove the stop washer (B1) x 1 pc., to remove the gear (B2) x 1 pc.

2.Remove the screws (B3) x 2 pcs., to remove the shaft (B4).

3.Remove the pickup.

Note

After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.

(B3) x 2	Stop Washer
ø2.6 x 6mm (B1) x 1

Pickup

	Shaft	CD Mechanism
		Gear
	(B4) x 1
		(B2) x 1
		Figure 13-2

ADJUSTMENT

MECHANISM SECTION

∙ Driving Force Check

Torque Meter	Specified Value
Play: TW-2111	Tape 1: Over 80 g
	Tape 2: Over 80 g

∙ Torque Check

Torque Meter	Specified Value
	Tape 1	Tape 2
Play: TW-2111	30 to 80 g.cm	30 to 80 g.cm
Fast forward: TW-2231	—	70 to 180 g.cm
Rewind: TW-2231	—	70 to 180 g.cm

∙ Tape Speed

	Test Tape	Adjusting	Specified	Instrument
		Point	Value	Connection
Normal	MTT-111	Variable	3,000 ± 30 Hz	Speaker
speed		Resistor in		terminal
		motor.		(Load
				resistance:
				6 ohms)

TAPE MECHANISM

Tape

Motor

Variable Resistor in motor

Figure 13-3

– 13 –

CD-BK310V

TUNER SECTION

fL: Low-range frequency fH: High-range frequency

∙ AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage	Frequency	Frequency	Setting/	Instrument
		Display	Adjusting	Connection
			Parts
AM IF	450 kHz	1,602 kHz	T351	*1
AM Band	—	531 kHz	(fL): T306	*2
Coverage			1.1 ± 0.1 V
AM Tracking	990 kHz	990 kHz	(fL): T303	*1

∙ FM RF

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Test Stage	Frequency		Frequency	Setting/	Instrument
			Display	Adjusting	Connection
				Point
FM Band	—		87.50 MHz	T301(fL):	*1
Coverage				1.3 V ± 50 mV
FM RF	98.00 MHz		98.00 MHz	L312	*2
	(10-30 dB)
*1. Input: Antenna		Output: TP301
*2. Input: Antenna		Output: Speaker terminal

*1. Input: Antenna	Output: TP302	SO302	CNP301
*2. Input: Antenna	Output: TP301		AM LOOP			MAIN PWB
		FM ANTENNA
			ANTENNA
		TERMINAL
			IC301	T303		AM
						TRACKING fL
						R316
			T302	L312		TP301
			FM IF	FM RF		T306
		T301
	FM BAND					AM BAND
	COVERAGE fL
						COVERAGE fL
		T351
		AM IF
					TP302
						R357

Figure 14-1 ADJUSTMENT POINTS

CD SECTION

•Adjustment

Since this CD system incorporates the following automatic adjustment functions, readjustment is not needed when replacing the pickup. Therefore, different PWBs and pickups can be combined freely.

Each time a disc is changed, these adjustments are performed automatically. Therefore, playback of each disc can be performed under optimum conditions.

Items adjusted automatically

(1)Offset adjustment (The offset voltage between the head amplifier output and the VREF reference voltage is compensated inside the IC.)

*Focus offset adjustment

*Tracking offset adjustment

(2)Tracking balance adjustment (waveform drawing Fig.14-2 EFBL)

(3)Gain adjustment (The gain is compensated inside the IC so that the loop gain at the gain crossover frequency will be 0 dB.)

*Focus gain adjustment

*Tracking gain adjustment

	Stopped		T						1999/04/05	20:26:47
	CH1=500 mV			CH2=200 mV		CH3=1 V			500 ms/div
	DC	10:1		DC	10:1	DC 10:1			(500 ms/div)
									NORM:20 kS/s
T	FDO
1
3	TE
	EFBL
2
										CH2
										v/DIV
										200 mV
	=Filter=			=Offset=		=Record Length=			=Trigger=
Smoothing : ON			CH1 :		0.000 V	Main :	100 K	Mode : SINGLE
BW	: FULL		CH2 :		0.000 V	Zoom :	2 k	Type	: EDGE CH1
			CH3 :		0.00 V			Delay :		0.0 ns
			CH4 :		0.00 V			Hold off :		0.2 s
					Figure 14-2

– 14 –

CD-BK310V

TEST MODE

• Setting the test mode

Any one of test mode can be set by pressing several keys as follows. <X-BASS> + <CD> + <POWER> TEST:CD operation test

Function:-CD test mode. -Enter test mode.

C D T E S T

IL isn't done

<<>>, <<>> buttons make pick's slide possible.

<<PLAY>> key input.

<<MEMORY>> key input

Adjustment result automatically will display as below for each 2 sec :

a)"FOF_XXXX"

b)"TOF_XXXX"

c)"TBA_XXXX"

d)"TGA_XXXX"

f)"FGA_XXXX"

g)"RFL_XXXX"

Do TOC IL. Do normal play When these following key is input into PLAY key, track number can be appoint directly

<< 1>> key: Track 4
<<	2>> key: Track 9
<<	3>> key: Track 15

explanation:
a)	Focus off set	="FOF_XXXX"
b)	Tracking off set	="TOF_XXXX"
c)	Tracking balance	="TBA_XXXX"
d)	Tracking Gain	="TGA_XXXX"
f)	Focus Gain	="FGA_XXXX"
g)	RF level shift	="RFL_XXXX"

VOL — Last memory

BAL — CENTER

P.GEQ — FLAT

X-BASS — OFF

<<STOP>> key input.

STOP

To cancel : Power OFF

<<MEMORY>> key input.

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that specific point.

<<MEMORY>> key input.

Tracking ON play from that specific point.

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec :

a)"FOF_XXXX"

b)"TOF_XXXX"

c)"TBA_XXXX"

d)"TGA_XXXX"

f)"FGA_XXXX"

g)"RFL_XXXX"

<<STOP>> key input.

STOP

Sliding the PICKUP with <<>>, <<>> button

must only be in STOP mode.

– 15 –

CD-BK310V

Standard Specification of Stereo System Error Message Display Contents

	Error Contents	Display	Notes
Output while Device Protection Operation		'PROTECT'	00: While in Protect Circuit Operate
			01: Over Current Detection
			02: DC Detection
			03:
TAPE	Mechanism Error	'ER-TA**'	00: Tape Mechanism Error
			01: Initial Error
			02:
			03:
CD/VCD	Pickup Mechanism Error	'ER-CD**'	00: Pickup Mechanism Error
			01: PU-IN SW Detection NG
			02:
			03:
	CD Changer Mechanism Error	'ER-CD**'	10: Changer Error
			11: Initial Error
			12:
			13:
	Tray Error	'ER-CD**'	20: Tray Error
			21:
			22:
			23:
	Micon Communication Error	'ER-CD**'	30: System-VCD
			31: System-CD Servo
	Focus Not Match	'NO DISC'
	IL Time Over	'NOT READ'
TUN	PLL Unlock	'ER-TU**'	00: TUN Error
			01: PLL Unlock
			02:
			03:

VIDEO CD SECTION

TEST DISC Model No.TVD-581A (NTSC/PAL)

∙ Checking of video output signal Checking of color bar

	Disc	Adjusting Point	Instrument
			Connection
	Track 2	Video output terminal	Chroma Peak Level
			105 ± 15 IRE

UNIT

Video Output Terminal

Video Input Terminal

TV

Figure 16-1 CHECKING OF VIDEO OUTPUT SIGNAL

IH (59.94 Hz)

100

100

75

88.5

100 IRE

75

70

Color bar signal

waveform

140 IRE

(0.714 V)

41.5

(1 V)

20

33.5

40 IRE

5

0

Horizontal

(0.286 V)

-13.5

-20

lleo w

t a

-25

-25

sync signal

yar

nay

gae n

eer n

de

eul

-40

40 IRE

Color Burst

G

Y

C

M

G

R

B

Figure 16-2

– 16 –

CD-BK310V

	G r a y	Y e l l o w	C y a n	M a g e n t a	G r e e n	R e d	B l u e

	r a y	e l l o w	y a n	a g e n t a	r e e n	e d	l u e
	G	Y	C	M	G	R	B

			TV monitor								TV monitor
			Figure 17-1								Figure 17-3
									Checking the black-and-white level
Checking of vector scope waveform									Disc	Checking	Setting	Checking
								Checking				Item
	Disc	Checking		Setting
								Item				Output level
									Track 3	VIDEO OUT	150 line.
			Set the phase of color									±10 IRE
							Phase check
	Track 2	VIDEO OUT	burst signal (B) to
							±10°
			180° -360° line.
											0%
									IRE
(	Check that the setting is within the illustrated range.)								100		12.5%
									80
		110	100	90	80				60
					70
		120				60
		130						50	40
	140	103.4	R		MG			40	20
	150					60.8		30
	160	167.1						20				(This burst level
									-20			is 40 IRE)
170					+0			10
					33
180		YE						360	-40		100%
						BL

190					350	NTSC
						Waveform on 140 LINE
			-1
				347.1
200			123 +180		340	Figure 17-4
210	240.8				330
	G		283.4		320
	220		CY
	230			310
	240			300
	250		290
	260	270	280
Vector scope waveform of color bar signal						140 IRE

Figure 17-2

TV monitor

Figure 17-5

– 17 –

CD-BK310V

NOTES ON SCHEMATIC DIAGRAM

∙Resistor:

To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type.

∙Capacitor:

To indicate the unit of capacitor, a symbol P is used: this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used.

(CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type

(P.P.): Polypropylene type

∙Schematic diagram and Wiring Side of P.W.Board for this model are subject to change for improvement without prior notice.

∙The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given.

1.In the tuner section, indicates AM indicates FM stereo

2.In the main section, a tape is being played back.

3.In the deck section, a tape is being played back. ( ) indicates the record state.

4.In the power section, a tape is being played back.

5.In the CD section, the CD is stopped.

∙Parts marked with “ ” ( ) are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

REF. NO	DESCRIPTION	POSITION
SW1	OPEN/CLOSE	ON—OFF
SW2	CLAMP	ON—OFF
SW3	DISC NUMBER	ON—OFF
SW4	PICK UP IN	ON—OFF
SW601	SPAN SELECTOR	9kHz/50kHz
SW701	ON/STAND-BY	ON—OFF
SW702	CLOCK	ON—OFF
SW703	TIMER	ON—OFF
SW704	KARAOKE MODE	ON—OFF
SW705	PLAYBACK CONTROL	ON—OFF
SW706	ON SCREEN DISPLAY	ON—OFF
SW707	DIGEST	ON—OFF
SW709	DISC 1	ON—OFF
SW710	DISC 2	ON—OFF
SW711	DISC 3	ON—OFF
SW712	DISC SKIP	ON—OFF
SW713	OPEN/CLOSE	ON—OFF
SW714	DIMMER	ON—OFF

REF. NO	DESCRIPTION	POSITION
SW715	X-BASS/MEMO	ON—OFF
SW716	EQUALIZER	ON—OFF
SW717	REVERSE MODE	ON—OFF
SW722	CD	ON—OFF
SW723	TAPE	ON—OFF
SW724	TUNING DOWN	ON—OFF
SW725	MEMORY/SET	ON—OFF
SW726	PRESET DOWN	ON—OFF
SW727	PRESET UP	ON—OFF
SW728	PLAY	ON—OFF
SW729	STOP	ON—OFF
SW730	REVERSE PLAY	ON—OFF
SW731	REC/PAUSE	ON—OFF
SW732	TUNING UP	ON—OFF
SW733	VIDEO/AUX	ON—OFF
SW734	TUNER	ON—OFF
SW801	VOLTAGE SELECTOR	110V—127V
		220—230-240V

TYPES OF TRANSISTOR AND LED

FRONT

FRONT

VIEW

VIEW

FRONT

VIEW

E

C

B

(S)

(G)

(D)

B C E

(1)

(2)

(3)

2SA1015 GR

KTC3199 GR

4204UYT7

KTC2026

2SC1845 F

KTC3203 Y

4204UGT7

2SC3203Y

KTC3265 Y

4204SRT7

AN78L05

KTC3194 Y

KIA7805 AP

KTC3875 GR

KIA7810 AP

KRC102 M

KTA1266 GR

KRC102 S

KTA1271 Y

KRC104 M

KTA1273 Y

KRC104 S

KTA1274 Y

KRC107 M

KTA1504 GR

– 18 –

				17
				~
				21
				~	ICM4 IX0408AW
				23
				25
				30
				32
M3	-
CD LOADING		6	6	6
MOTOR	M
		5	5	5
	+
SW3
		4	4	4
DISC No.
SW2		3	3	3
CLAMP		2	2	2
SW1
		1	1	1
POEN/CLOSE
	+			CNP4
M1		6	6	6
	M
SPINDLE		5	5	5	A
MOTOR	-
M2	+	4	4	4
	M
SLED		3	3	3	B
MOTOR	-
SW4		2	2	2
PICKUP IN		1	1	1
				CNP3

	+10 V	1
	+5 V	2	Q2
MAINTO SECTION	CD-GND	3
	L-CH	4
	A_GND	5
	R-CH	6	Q9
	CNP11

Q10

		CNP12
		GND	9
		CLAMP SW	8
	DISPLAYTO SECTION	CD RES	7
		CLK	6
		DI	5
		DO	4
		CE	3
		DRF	2
		WRG	1

																									CD-BK310V
																							JK671
					89 79		37		33	23	90 78 73 66 60 59												VIDEO OUT
																64
				~	EVEN	No.	ARCLK		AJN	ARFS											QM1
				80												53
				86
																32
				92
					EVEN	No.										16
				~
				98												5
				8						ICM3						100
									ES3889F
				81	ODD	No.	VCD COMPANION CHIP									91
				~												77
				85												75	CNP1
				~	ODD	No.
				93												72
				99												63
					6		1	25 26 31 41 43 51 56 57 62
OE_ 24					DSO C
CE_ 22						100 80 50 30 47 ~ 45 44 43 41 ~ 32
	15				55											12						19			22
EPROM																	~					~	ICM1	1625635T DRAM	~
	1				~																	~			~
	~																4					16			26
	13				62							ICM2										10			31
	12				64 LOE#						ES3880F					28						~			~
																	~					6			34
	~								VCD PROCESSOR CHIP
	2
					65 LROMCE#											13						5			36
					66 LSC1#											81						2			39
					68											51						20			21
														ARCLK		31									35
													AJN		ARFS
					79												1					1			40
							82 ~ 87			88 ~ 91			93	94	95
								TO ICM3
								17, 19, 21, 22PIN									35 ~ 29 22 21 14 ~ 8
																39 CAM. M+					SP-	27		B
																38 CAM. M-			M63001FP FOCUS/TRACKING/	DRIVERSPIN/SLED	SP+	26
																		IC3
																42	CAM. M+				SL+	16		A
																					SL-	15
																41	CAM. M-
																25 SPDO					TR-	7
																					TR+	6
																17 SLDO
																						5
																2	FD				FO-
																						4
																1	TO				FO+
																	18 40 24 23 28
		56 55 54 35 57 ~ 59				33 26 25 24 23											-5 V
						CONT5			SLDO SPDO	FDO	TDO										+3.3 V
	40
												19
	30 CONT2											3						LASER							TRACKING COIL
																					Q3
	31 CONT3										TE 16							DRIVER							FOCUS COIL
											FE 15
	32 CONT4
	41 RCHO				IC2					RFEV 14							22 RFEV
											HFL	7					21 FE-			LDD		8
				LC78636E
	47	RVSS															20 FE		LA9235M SERVOAMP.
			SERVO/SIGNAL XVDD 50																			7
	46														V+3.3		19 TE-	IC1			PD
		LVSS		CONTROL						RVDD 49							18 TE			FIN2		2
										LVDD 44
	53 LCHO																17 HFL			TIN2		4
											VDD 36
																				TIN1		3
	76 CONT7									ADAVDD 18
	75 CONT6				WRQ RES				XOUT	VVDD		5								FIN1		1
			DI DO	INT		DEF				XIN	VDD 73
		CE CL
		65 66 67 68 69 70 71 72							52	51			+5 V				30		23 11		9
															Q4							+5 V
									XL2			CONSTANT													PICKUP UNIT
												VOLTAGE
																	+3.3 V

Figure 19 BLOCK DIAGRAM (1/3)

– 19 –

CD-BK310V

FM

ANTENNA

+B4

FM IF

10.7MHz

IC301

6

T302

CF303

BF301

1

TA7358AP

CF351

B.P.F

FM FRONT END 9

450kHz

X351

SO302

2

3

4

5

7

8

T351 CF352

456kHz

FM ANTENNA

FM

OSC

AM IF

TERMINAL

FM

IC303

1

2

4

5

9

8

17

13

AM MIX

AM IF GND FM+B FM VCOMO/ST

L312

T301

LA1832S

RF

FM IFDET.

DET

L 14

FM

FM MPX./

FM/AM

R 15

AM LOOP

OSC

AM IF MPX.

OUT

MPXIN

FM/AM

23

21

7

ANTENNA

18

16

12

AM TRACKING

OSC BUFF

OSCAMIN

RFAMIN

STEREO

CNP301

Q302

1

2

T303

T306

AM BAND

COVERAGE

VT

X352

ICK1

4.5MHZ

CE

DI

CLK

DO

M65856SP

JK1

MIC AMP.

20

1

22

15 16

11

3

4

5

6

MIC

OSC

IC302

LATCH 40

LC72131

17

CLK 41

+B4

PLL(TUNER)

+B

FM/AM MO/ST

DATA 42

+B4

MIC IN

FM

FM

7

9

10

21

LOUT 36

9

Q360

ROUT 35

8

CONSTANT

12

31

L IN

VOLTAGE

13

R IN 32

5

VRK1

VCC 23

6

7

L

JK601

+B4

MIC

1

R

23

VOLUME

+B5

QK1

2

L

VIDEO IN

9

DI

1

AUX

L

3

R

R 16

CE

2

–20dB

CLK 24

TAPE L 10

IC601

ATT

ICK2

R 15

21 R

Q603

Q605

CNS11

KIA4558P

TUNER

L 11

LC75341

L

Q604

Q606

AUDIO PROCESSOR 4

SYSTEM

OPE AMP.

R 14

1

MUTE

FROM VIDEO

CD L 12

2

CD SECTION

IC101

R 13

CNP11

3

PLAYBACK AND

7

18 8 17

3

RECORD/

MIC

L

R

PLAYBACK AMP.

L(T1)

1

13

+B4

Q121

REC/PLAY

TAPE 1

L-CH

R(T1)

24

P.B

4

L PB

Q122

+B4

P.B. HEAD R-CH

SWITCHING

L(T2)

2

MUTING

21

R

REC

R(T2)

23

8

P.B.

Q103-

TAPE 2

L-CH

Q106

L NF

3

5

IC702

1

R-CH

R NF

22

20

REC. P.B. HEAD

4

IC703

IC70

H/N

AC BIAS

POP REDUCE

6

T1/T2

7

L REC

7

IX041

L REC

9

REC

18

R

–B2

KIA4558P

MOTOR

R REC 16

8

L NF

OPE AMP.

DRIVER

REF 14

17

R NF

+B3

Q708

TAPE

NOR/

ALC

MECHANISM

12

T1/T2

10

+B3

Q704

ASS'Y

HIGH

Q705

15

19

SOLENOID

SWITCHING

SWITCHING

DRIVER

T1/T2

Q107

Q111

Q108

Q109

SWITCHING

Q110

BIAS

SWITCHING

ERASE	BIAS Q128	Q124	Q126	BIAS
	OSC L104	L103
HEAD

Figure 20 BLOCK DIAGRAM (2/3)

– 20 –

CD-BK310V

+B4

FL701

FL DISPLAY

1 2 3	4 ~ 12	13 ~ 18	19 ~ 24	25 ~ 36	37 38 39	JOG701
						JOG
	Q701-Q703
	Q710-Q712			+B5			RX701
						1	REMOTE	3
							SENSOR

2

+B5

61

57 56 55 54 53 52 51 50 49 48

46 45 44 43 42 41 40

67

VDD

39

-

61

38

KEY

78

KARAOKE LATCH

37

SW701-SW707

-

IC701(1/2)

+B5

BU2092F

79 VLOAD

SW709-SW717

80

36

SW722-SW734

35

IC704

IX0411AW

85

AVDD 34

INPUT/OUTPUT +B6

SYSTEM MICROCOMPUTER

86

33

EXPANDER

-

1

-

91

31

2

18

100VDD

RESET

VDD

CE CLK DI DO

23

IC704

58

4

92

22

3

1

2

4

5

6

7 - 9 10 11 12 13 15 16 17

- 20 21 22 23 24

+B5

+B5

TO CD

XL701

SECTION

4.194304MHz

+B3

RESET Q709

+B5

JK670

Q906

SPAN

HEADPHONES

FAN MOTOR

+B6

SP. DET.

Q905

SELECTOR

Q907

DRIVER

Q908

Q910

M

M901

FAN

IC901

SP RELAY

MOTOR

7 R-OUT

ON-OFF

+B6

1 STK40271

+B4

15 POWER AMP.

11 L-OUT

Q909

RY901

M

M902

–Vcc

13

20dB

FAN

+Vcc

ATT

9

Q902

MOTOR

3

Q605

8

8

RY902

Q901

4

Q606

Q903

–B2

MAIN

SYSTEM

L

5

Q904

MUTE

IC902

6

T801

SUBWOOFER

L 1 STK4029S

7 R-OUT

F803

7 L

POWER TRANSFORMER

1 R

R 15 POWER AMP.

11 L-OUT

T5A L 250V

SO901

R

2

–Vcc

13

3

+Vcc

9

8

+B2

F801

IC903

T4A L 250V

REC/PLAY

D802

KIA4558P

F802

OPE AMP.

–B1

T4A L 250V

+B1

D803

F804

28

VOLTAGE

T5A L 250V

IC701(2/2)

REGULATOR

IX0411AW

M12V

29

D804~D807

F806

+B3

Q850

VF1

VF2

T2A L 250V

SW801

F805

VOLTAGE

+B4

Q851

T2A L 250V

SELECTOR

A+10V

230-240 V

AC POWER

CONSTANT

220 V

SUPPLY CORD

AN78L05

127 V

AC 110/127/220/

VOLTAGE

Q801

230-240 V, 50/60 Hz

+B5

UN-SW5V

Q821REGULATOR

T.F.

110 V

T1/T2

+B6

+5V

KIA7805AP

Q852

–VF

CONSTANT VOLTAGE REGULATOR

BIAS

Figure 21 BLOCK DIAGRAM (3/3)

– 21 –

CD-BK310V

A	PICKUP UNIT

	VCC	7
	VREF	6
B	E	5
	A	4
	B	3
	F	2
	C	1

C

D

E

		TR–	1
	TR+	TR+	2
	FO+	FO+	3
		FO–	4
	FO–		5
	TR–	PD
			6
		VR	7
		LD	8

GND

F

		CD MOTOR PWB-F
	G	M1	+
		SPINDLE
			M –
		MOTOR
		M2	+
		SLED
			M –
		MOTOR
		SW4
		PICKUP IN

H

VIDEO CD PWB-B(1/2)

IC

LC78

CNS1B

CNS1A

R50

SERVO/

CON

CNP9

47

+B

7

7

7

6

6

6

R51 68K

TIN1

5

7

5

5

R52 56K

FIN1

C23

R12

4

C11

4

4

3

R53 56K

FIN2

0.047

680

PD

3

3

R54 68K

TIN2

47/6.3

5

R79

1.5M

R13

2

2

2

R56

R55

C12

C24

680 PD0

56K

56K

2.2/50

VVS

1

1

1

0.022

C21

FIN1

VCC

C81 0.0

1

30

C22

C18

C25

0.1

PCKIS

REF

ODRV

RFSW

0.022

100P

R11

FIN2 2

6P(CH)

(CH)

VVD

REF

29

R42

12K

REF

AGCON

56K

R5

R7

R10

R80

R14

F

C55 0.01

TIN1

RF–

39K

27K

1M

1.2K

HF

C54 47/10

3

REF

28

6.8K

TIN2

RF

27K

C20

R8

10K

SLC

REF

R6

R15

SLCIS

4

PH

27

C13

0.1

330

EFMI

REF

26

C6 100/6.1

REF1

PH

C17

C27

JITT

REF

0.01

68P

C26 0.047

C8

VREF 6

24 BH

JITT

5

DH

25

C14

0.0047

C42

0.1

0.1

7

ODRV

23

0.33

(CH)

B

LDD

APC

PH/BH

PH(RFENV

8

22 RFEV

GND

9

REF

21

FE– R3 47K

F

LDON

REF

LPF

FE

T

C51

10

REF

20

R4

C53

TE–

VRE

11

ODRV

LPF

19

0.001

47/6.3

TE

10K

ADAVD

AGON 12

AGCON

REF

18

3.2 V

R25

EFBL

13

REF

REF

17

HFL

C82

C28

R47

10K

0.022

47/10

ADAVS

TEST0 14

LPF

REF

16 TEST

4

3.3

TES1 15

REF

C29 PHRE

1.6 V

8.4 V

4

0.022 BHRE

Q3

TBL

KTA1504 GR

IC1

EFBL 1K

TD

DRIVER

FD

LASER

LA9235M

13

2

R44

1000/6C88 .3 SERVO AMP.

R35

1K

C19

R

C52

1.

0.022

0.01

CNS2B

CNS2A

CNP10

TDO

1

–

+

42

1

1

TR–

FDO

+

–

–

+

1

2

+

41

2

2

TR+

–

+B

2

C46

3

–

+

40

+

–

3

3

FO+

0.022

–

3

4

+

39

4

4

FO–

4

5

38

5

5

GND

5

6

37

6

6

PD

C47

6

7

36

7

7

VR

M63001FP

100/6.3

7

13

IC3

30

8

8

LD

8

35

8

9

34

10

33

11

32

12

31

+B

14

29

+B

15

28

16

–

27

–

17

+

26

+B

+

18

+

–

–

25

R48

–

+

+B

19

+

+

24

6.8K

20

–

23

+B

+

C50

21

–

+

22

CNS3B

CNS3A

100/10

–

CNP3

6

SP+

C49 100/10

6

6

6

SP–

5

5

5

5

SL+

+B

4

4

4

4

SL–

IC3

3

3

3

3

2

PUIN

M63001FP

2

2

2

GND(D)

1

1

1

1

FOCUS/TRACKING/SPIN/SLED DRIVER

• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.

1

2

3

4

5

6

Figure 22 SCHEMATIC DIAGRAM (1/12)

– 22 –

CD-BK310V

OPENNMP3O

C71

100P(CH)

R71

1K

C72

0.01

R72

1K

DISC-NO

C73

100P

R73

1K

IC2

R94

(CH)

3

10K

C75

C75~C78

100P(CH)

R75

100

LC78636E

R95

R67

1K

C76

R76

1K

CD SIGNAL

ERVO/SIGNAL

10K

R68

C77

R77

1K

CONTROL

+B

1K

C78

R78

1K

V/P CONT7

CONT6

2.2 H

+B

8

DEFECT

FSEQ

VSS

C80

0.1

RES

WRQ

L62

DEF

DO DI

CL

CE

7

VDD5V

12

EFMO 80 79 78 77 76 75 74

73 72 71 70 69 68 67 66 65

C44

0.022

80

PD01 1

COMMAND

GENERAL

5M R13

INTERFACE

680 PD02

2

IC2

SUBCODE DECODE CRC

64

SBCK

C45

100/10

VVSS

PLL VCEC

PW

3

63

21

C81 0.022

FRAME SYNC

LC78636E

SBSY

.1

PCKIST

4

DEFECT,PROTECT

62

SFSY

12

11

11

EFM DECODE

61

K

VVDD 5

CLV

60

16M

14

FR

6

EXTERNAL SERIAL AUDIO IN OUT

DATA

DATA

1

CONTROL

59

.2K

HFL 7

DATACK

DATACK

2

MP3 SECTION P24 1-E

58

SLCIST

8

SLICE LEVEL CONTROL

57

LRSY

LRSY

3

SLCO

9

56

ASDFIN

10

EFMIN

ASDACK

+B

10

55

C27

JITTV

11

JITER

54 ASLRCK

XL2

+B

+5V

0.1

JITTC

12

DEFECT

SW

CLOCK GENERATOR

53

XVSS

4

TO

BH

CONTROL

ATTENUATION

DEEMPHASIS

16.9344MHz C85

13

52

PH(RFENV)

14

AUTO

XOUT R20

8P(CH)

FE

SW

XIN

220

C86

15

ADJUST

51

TE

XVDD

+B

10P(CH)

C84

16

A/D

SERVO

PROCESSEROR

INTERPOLATION MUTE DIGITAL FILTER

50

C34 0.022

0.047

VREF

17

49 RVDD +B

CNP11

R-CH

ADAVDD

18

48

RCHO

1

FROM

+

RVSS

R117A

AGND

47

GR

2

MAIN PWB

–

330

P26 1-A

ADAVSS

LPF

LVSS

L-CH

19

1BIT DAC

46

R118A

0 V

3

C29 PHREF 20

LCHO

DGND

CNS11

45

2.2K

+B

4

.022 BHREF

21

ERROR CORRECT

44

LVDD

R114A

0.6 V

Q10

KTC3875

+5V

5

GENERAL

MUTER

22K

A10V

TBLO 22

S/H

D/A

FG(DVref)

AUDIO

43

+B

6

TDO 23

LASER

CONT1 CONT2

CONT3

CONT4

CONT5

MUTEL

CE1 0 V

1K

OUT

EFLG

42

FDO

24

FSX

41

1/50

0 V

R-CH

5

EMPH

1.1 V

A_GND

TO MP3

R44

R35

SPDO 25 26 SLDO 27 28 29 30 31 32 33 34 35 36 37 38 39 40 TEST

+B

R113A

2.2K

KTC3875GR

6

Q9

L-CH

SECTION

1K

7

0 V

P25 12-B

1

R38

R39

R40 1.2K

R45 1.2K

R17 1K PCK

C2F VDD

DOUT

C30

+B

A10V

R46 1K

R112A

8

270

470

0.022

+B

330

R37

+B

9

R116A

1.5K

C83

D_GND

TO MP3

9

1.5K

6

C31

Q4

0.047

SECTION

P24 1-E

100/10

KTC3203 Y

0 V

+B

+B

R16

L61

0 V

1000/6.3

R97

10K

0.82 H

R58

C87

CNP12

3.9K

Z02W3.9Z

3.2 V

68

WRQ

1

ZD61

DRF

C64

2

FROM

CE

47/6.3

3

DISPLAY PWB

DO

+B

4

P29 10-B

DI

Q4: CONSTANT VOLTAGE

5

CNS703

R21

R22

CLK

6

470

470

CD RES

KDS193

KDS193

7

D21

D22

CLAMP SW

8

GND

9

3 0 V

1.2 V

2

Q2

1

KRC102 S

0 V

RAC/NTSC

10

TO MP3

SECTION

RES 11

P24 1-E

BI4

SW1

OPEN/CLOSE

1

1

1

OPEN/CLOSE

CLAMP

2

2

2

GND(D)

SW2

3

3

3

DISC-NO

CLAMP

4

4

4

SW3

LD

M+

5

DISC

5

5

LD

M–

6

+ M

NUMBER

6

6

CNP4

—

M3 T/T

CD LOADING

CNS4

MOTOR

CD LOADING

MOTOR PWB-E

• The numbers 1 to 13 are waveform numbers shown in page 44.

7

8

9

10

11

12

Figure 23 SCHEMATIC DIAGRAM (2/12)

– 23 –