Sharp CDBK-310-V Service manual

MANUAL

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.

NTSC/PAL

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

SHARP CORPORATION

– 1 –

This document has been published to be used
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 –

QACCA0003AW00

CD-BK310V

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCJ0007AW00

QACCB0011AW00

QACCE0010AW00

CD-BK310V

General

Power source
Power consumption
Dimensions

Weight

Amplifier

Output power

Output terminals

Input terminals

Video CD

Video output format

CD player

Type
Signal readout
D/A converter
Frequency response
Dynamic range

QPLGA0003AWZZ

QPLGA0004AWZZ

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

SPECIFICATIONS

Tuner

AC 110/127/220/230 - 240 V, 50/60 Hz
210 W
Width: 270 mm (10-11/16")

Height: 330 mm (13")
Depth: 372 mm (14-11/16")

8.7 kg (19.2 lbs.)

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)
Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Video/Auxiliary (audio signal): 500 mV/47 kohms
Microphone: 1 mV/600 ohms

PAL/NTSC

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

Frequency range

Cassette deck

Frequency response
Signal/noise ratio

Wow and flutter

CP-BK310

Type

5 cm (2") Tweeter

Maximum input power
(Total)

Rated input power
(Total)

Impedance
Dimensions

Weight

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

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

50 - 14,000 Hz (Normal tape)
55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/playback)

0.3 % (WRMS)

3-way type speaker system

13 cm (5-1/4") Woofer
16 cm (6-1/2") Subwoofer
250 W

125 W

6 ohms
Width: 287 mm (11-5/16")

Height: 330 mm (13")
Depth: 281 mm (11-1/16")

5.0 kg (11.1 lbs.)/each

– 3 –

CD-BK310V

CD-BK310V

NAMES OF PARTS

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 Dis c Pla y 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

1
2

3

19
20
21

22
23

678

1513 1412

30 31 32 34 3533

9
10

11

4
5

1716 18

24
25
26
27
28
29

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
2

34 6

– 4 –

8
9

5

17

17 17

10
11

12

13 14 15 167

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

CD-BK310V

1
2
3
4

5
6

9

8

7

Remote control

Remote Control Transmitter

1.

Video CD/CD/MP3 Disc Number Select Buttons

2.

3.Echo Level Up and Down Buttons

Karaoke Mode Button

4.

5.Video CD Auto/On Button

Video CD Playback Control Auto/Off Button

6.

Video CD On Screen Display On/Off Button

7.

8.Video CD/CD/MP3 Disc Clear Button

9.Video CD Digest/Time Search Button

Video CD Skip or Previous, CD/MP3 Disc Track Down or Fast Reverse,

10.

Tape 2 Fast Wind, Tuner Preset Down Button

11.Video CD Bookmark Button

Tape 2 Reverse Play Button

12.

13.PAL/NTSC Select Button

Video CD/CD/MP3 Disc Button

14.

Tape (1 2) Button

15.

On/Stand-by Button

16.

17.MP3 Disc Display Button

18.Video CD/CD/MP3 Disc Direct Search Buttons

19.Video CD/CD/MP3 Disc Random Button

Video CD/CD/MP3 Disc Memory Button

20.

Video CD Skip or Next, CD/MP3 Disc Track Up or Fast Forward, Tape 2

21.

Fast Wind, Tuner Preset Up Button

22.Video CD/CD/MP3 Disc Pause Button

Video CD Play or Repeat or Select or Resume, CD/MP3 Disc Play or

23.

Repeat, Tape 1 Play, Tape 2 Forward Play Button
Video CD Stop or Return, CD/MP3 Disc/Tape Stop Button

24.

Extra Bass Button

25.

Equalizer Mode Select Button

26.

Volume Up and Down Buttons

27.

Tape 2 Record Pause Button

28.

Tuner (Band) Button

29.

Video/Auxiliary Button

30.

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

only.

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

1
2

16
17

3
4

18

5
6

19

7

20

8

9
10
11
12
13
14
15

21
22

23
24

25
26

27
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

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 n um­ber 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

Setting the FM/AM span selector

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 (regi on 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:

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

3 Whilst 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 –

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 fi rst installed or it has been reset.

CD-BK310V

4

Press the TUNING/TIME ( or ) button to adjust the hour and the n
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 d isplay 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:

1 Clear all the programmed contents.
2 Perform "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 cal ling 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

When a button is pressed, the unit
does not respond.

No sound is heard. Is the volume level set to "0"?

clock.
Set this unit to the power stand-by mode

and then turn it back on.
If the unit still malfunctions, reset it.

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
playback.

The picture quality is poor, or it is
distorted.

Is the TV unplugged?
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?
Is the disc very dirty?

CD player

Symptom Possible cause

Playback does not start. Is the disc loaded upside down?
Playback stops in the middle or is

not performed properly.
Playback sounds are skipped, or

stopped in the middle of a track.

Does the disc satisfy the standards?
Is the disc distorted or scratched?
Is the unit located near excessive vibra-

tions?
Is the disc very dirty?
Has condensation formed inside the unit?

Tuner

Symptom Possible cause

Radio makes unusual noise con­secutively.

Is the unit placed near the TV or comput­er?

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

sound quality.
Cannot erase completely.
Sound skipping. Is there any slack?

Cannot hear treble. Are the capstans, pinch rollers, or heads
Sound fluctuation.
Cannot remove the tape. If a power failure occurs during playback,

Is it a normal tape? (Y ou cannot record on
a metal or CrO tape.)

Is the tape stretched?

dirty?

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
disc is not heard.

Is the karaoke mode set to "L-CH", "R-CH"
or "V-CANCEL"?

Remote control

Symptom Possible cause

The remote control does not oper­ate.

Is the AC power lead of the unit plugged
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:

1 Set the unit to the stand-by mode and turn the power on again.
2 If 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 memor y by resetting it.

Clearing all the memory (reset)

1 Press the ON/STAND-BY button to enter the power stand-by mode.
2 Whilst pressing down the button and the X-BASS/DEMO button, press the ON/

STAND-BY b utton 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

1 Press the ON/STAND-BY button to turn the power on.
2 Press the CD/VIDEO CD button.
3 Press the OPEN/CLOSE button to open the disc tray.

Remove all discs from the unit.

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

Make sure that "NO DISC" is displayed.

5 Press the ON/STAND-BY button to enter the stand-by mode, and then unplug

the AC power lead from the wall socket.

– 8 –

(B1) x 4
ø3 x 10mm

(B1) x 2

ø3 x 10mm
Rear
Panel

(B1) x 2
ø3 x 10mm

Side Panel
(Right)

Side Panel
(Left)

(A1) x 2
ø3 x 12mm

(A1) x 2
ø3 x 12mm

Top Cabinet

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

10
11

12 Turntable 1. Hook........................ (M1) x2 10-5

13 Disc Tray 1.

REMOVAL

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

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

6 Amp. PWB 1. Screw ....................... (F1) x5 10-3

7 Front Panel 1. Screw .......................(G1) x1 10-3

8 Display PWB 1. Knob......................... (H1) x1 10-4

9 Tape Mechanism 1. Open the cassette holder. 10-4

Headphones PWB
Mic PWB

14 Video CD PWB 1. Screw ....................... (P1) x1 11-1

(Note 2) 2. Hook......................... (P2) x2

15 CD Mechanism 1. Hook ......................... (Q1) x2 11-2

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.

3. After that, push forward the slide Chassis.

PROCEDURE

the CD tray cover, and close.
(Note 1)

2. Screw .......................(C1) x1

3. Hook......................... (C2) x3

4. Hook......................... (C3) x2

5. Socket ......................(C4) x4

2. Flat Cable ................ (E2) x1 10-2

3. Socket ...................... (E3) x5

2. Socket ...................... (F2) x2

3. PWB Holder ............. (F3) x2

4. Flat Wire................... (F4) x1

2. Screw ..................... (H2)

3. Flat Cable ................(H3) x1

2. Screw ........................(J1) x5

1. Screw ....................... (K1) x1 10-4

1. Screw ....................... (L1) x2 10-4

2. Cover ...................... (M2) x1

Turn fully the lock lever in the.

arrow direction

2.

While holding the lock lever, rotate
the cam gear until the cam gear
rib engages with the clamp lever.

3.

Push the slide chassis backward to

engage the claw with the groove
and remove it in the direction

of the arrow. .................

3. Socket ...................... (P3) x4

2. Hook.........................(Q2) x3

.

FIGURE

10-2,10-3

x12

(N1) x6

(Fig. 10-1)

9-3

10-1

10-6

CD-BK310V

CD-BK310V

Figure 9-1

(C4) x 4

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.
PWB

(D1) x 7
ø3 x 10mm

Main PWB

Figure 9-2

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 Tray Cover

1

Lug Wire

(D1) x 2
ø3 x 10mm

Lock Lever

CD Player Unit
(Bottom View)

(C2) x 3

1

2

CD Player
Unit

(C3) x 1

Front Panel

(E1) x 1
ø3 x 10mm

CD-BK310V

Power PWB

(E2) x 1

Transformer
PWB

(E3) x 1

(E3) x 1

Figure 10-1

Clamp Lever

CD Player Unit
(Top View)

Cam Gear Rib

(E3) x 1

Front Panel

Mic PWB

Main PWB

Display PWB

(H2) x 12
ø3 x 10mm

Tape
Mechanism

Lug Wire

(J1) x 5
ø3 x 10mm

(K1) x 1
ø3 x 10mm

(H3) x 1

(H1) x 1

(L1) x 2
ø3 x 10mm

Mic PWB

Front Panel

Open

Cassette
Holder

Headphones
PWB

Figure 10-4

(M2) x 1

Turntable

(E3) x 1

(F3) x 1

Push

Tape
Mechanism

Push

(F1) x 1

ø3 x 6mm

(F1) x 2

ø3 x 6mm

(F1) x 2

ø3 x 6mm

(F2) x 2

Amp.
PWB

Figure 10-3

Figure 10-2

Main PWB

Amp.
PWB

Headphones
PWB

(G1) x 1

ø3 x 10mm

(E3) x 1

(F4) x 1

(F3) x 1

Push

Front
Panel

Push

Slide
Chassis

(M1) x 2

CD Player Unit

Figure 10-5

(N1) x 3

3

2

1

(N1) x 3

Figure 10-6

– 10 –

CD-BK310V

(P2) x 2

(P3) x 2

(P1) x 1
ø3 x 8mm

(P3) x 2

Video CD

PWB

Figure 11-1

Slide
Chassis

CD
Mechanism

(Q1) x 1

(Q1) x 1

Figure 11-2

(Q2) x 3

CD
Mechanism
Chassis

Slide
Chassis

CP-BK310

STEP

(A1) x 4

ø4 x 20mm

REMOVAL PROCEDURE

1 Side Panel/ 1. Screw ..................... (A1) x4 11-3

Front Panel 2. Hook....................... (A2) x3

2 Subwoofer 1. Screw ..................... (B1) x4 11-4

3 Woofer 1. Screw ..................... (C1) x4 11-4

4 Tweeter 1. Screw ..................... (D1) x2 11-4

(A4) x 2

(A5) x 2

ø4 x 20mm

Side Panel

3. Net.......................... (A3) x1

4. Caching Holder ...... (A4) x4

5. Screw ..................... (A5) x4

(A3) x 1

(A4) x 2

(A5) x 2

ø4 x 20mm

Fromt Panel

FIGURE

(B1) x 4

ø4 x 16mm

Woofer

(C1) x 4

ø4 x 16mm

(D1) x 2

ø3 x 10mm

Tweeter

(A2) x 3

Subwoofer

Figure 11-4

Figure 11-3

– 11 –

CD-BK310V

TAPE 2

TAPE 1
Main Belt
(E1) x 1

TAPE 2
Main Belt
(D1) x 1

TAPE 1

FF/REW
Belt
(D2) x 1

FF/REW
Belt
(E2) x 1

Tape
Motor

Tape
Motor

Main Belt
(D1) x 1

Main Belt
(E1) x 1

FF/REW
Roller

FF/REW
Roller

Flywheel
Ass'y

Flywheel
Ass'y

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.

Erase Head

(A1) x 2
Ø2 x 6mm

Figure 12-1

TAPE 2

TAPE 1

Clutch Ass'y

Record/Playback
Head

Clutch Ass'y

Playback
Head

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

(B1) x 1
Ø2 x 9mm

Pinch Roller
(C1) x 1

(B1) x 1
Ø2 x 5mm

Figure 12-2

Pull

<B>

Figure 12-3

Pull

<A>

Pinch
Roller
Pawl

Figure 12-4Figure 12-5

– 12 –

(A1) x 2

(A1) x 1

CD Loading Motor

CD Loading
Motor PWB

Slide
Chassis

(A1) x 2

Pulley

Drive Belt
(A2) x 1

CD Loading
Motor

CD MECHANISM SECTION

(B3) x 2
ø2.6 x 6mm

Shaft
(B4) x 1

Stop Washer
(B1) x 1

Gear
(B2) x 1

CD Mechanism

Pickup

TAPE MECHANISM

Tape
Motor

Variable Resistor in motor

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.

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.

CD-BK310V

Figure 13-1

MECHANISM SECTION

• Driving Force Check

Play: TW-2111 Tape 1: Over 80 g

• Torque Check

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

Torque Meter Specified Value

Tape 2: Over 80 g

Torque Meter

Specified Value

Tape 1

ADJUSTMENT

Tape 2

– 13 –

Figure 13-2

• Tape Speed

Test Tape

Normal MTT-111 Variable 3,000 ± 30 Hz Speaker
speed Resistor in terminal

Adjusting

Point

motor. (Load

Figure 13-3

Specified

Value

Instrument

Connection

resistance:
6 ohms)

CD-BK310V
TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

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

*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301

Frequency Frequency

Display

Setting/

Adjusting

Parts

SO302

FM ANTENNA

TERMINAL

FM BAND
COVERAGE fL

Instrument

Connection

T301

T351

• FM RF

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

Test Stage

FM Band — 87.50 MHz T301(fL): *1
Coverage 1.3 V ± 50 mV

FM RF 98.00 MHz 98.00 MHz L312 *2

Frequency Frequency

Display

(10-30 dB)

*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal

CNP301

IC301

AM LOOP

ANTENNA

T302

FM IF

L312

FM RF

T303

AM BAND
COVERAGE fL

MAIN PWB

AM
TRACKING fL

R316

TP301

T306

Setting/

Adjusting

Point

Instrument

Connection

AM IF

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

TP302

R357

CH1=500 mV

DC 10:1

T

CH2=200 mV

DC 10:1

CH2 : 0.000 V
CH3 : 0.00 V
CH4 : 0.00 V

Stopped

T

FDO

1

TE

3

EFBL

2

Smoothing : ON CH1 : 0.000 V
BW : FULL

CH3=1 V

DC 10:1

=Record Length=

Main : 100 K
Zoom : 2 k

1999/04/05 20:26:47

500 ms/div

(500 ms/div)

NORM:20 kS/s

CH2
v/DIV
200 mV

=Trigger==Filter= =Offset=
Mode : SINGLE
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs

– 14 –

Figure 14-2

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

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

CD-BK310V

IL isn't done

<<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"

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"

<<PLAY>> key input.

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

<<STOP>> key input.

STOP

<<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.

VOL — Last memory
BAL — CENTER
P.GEQ — FLAT
X-BASS — OFF

To cancel : Power OFF

– 15 –

STOP

Sliding the PICKUP with
<<

>>, << >> button

must only be in STOP mode.

CD-BK310V

Color bar signal
waveform

100 100

88.5
75

70

75

41.5

33.5

5

0

-13.5

-25 -25

100 IRE

(0.714 V)

(1 V)

(0.286 V)

140 IRE

Horizontal
sync signal

40 IRE

40 IRE

Color Burst

20

-20

-40

Blue

Red

Green

Magenta

Cyan

Yellow

Gray

(59.94 Hz)

IH

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

Track 2 Video output terminal

Instrument

Connection

Chroma Peak Level

105 ± 15 IRE

UNIT

Video Output Terminal

Video Input Terminal

TV

Figure 16-1 CHECKING OF VIDEO OUTPUT SIGNAL

Figure 16-2

– 16 –

CD-BK310V

IRE

100

80

60

40

20

-20

-40

100%

12.5%

0%

NTSC

Waveform on 140 LINE

(This burst level
is 40 IRE)

Gray

Cyan

Yellow

Magenta

Red

Green

Blue

TV monitor

Figure 17-1

Checking of vector scope waveform

Disc Checking Setting

Set the phase of color

Track 2 VIDEO OUT burst signal (B) to

180° -360° line.

Checking

Item

Phase check
±10°

( Check that the setting is within the illustrated range.)

90

180

190

170

160

200

150

210

140

220

130

230

120

103.4

167.1

YE

240

110

250

100

R

240.8

G

260

270

80

MG

-1
123 +180

CY

280

70

+0
33

283.4

290

60

60.8

BL

300

50

347.1

310

40

30

20

10

350

340

330

320

Vector scope waveform of color bar signal

Figure 17-2

360

Gray

Cyan

Yellow

Magenta

Green

TV monitor

Figure 17-3

Checking the black-and-white level

Disc Checking Setting

Track 3 VIDEO OUT 150 line.

Figure 17-4

Red

Blue

Checking

Item

Output level
±10 IRE

140 IRE

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

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

DESCRIPTION

POSITION POSITION

TYPES OF TRANSISTOR AND LED

REF. NO

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

DESCRIPTION

220—230-240V

2SA1015 GR
2SC1845 F
2SC3203Y
AN78L05
KIA7805 AP
KIA7810 AP
KTA1266 GR
KTA1271 Y
KTA1273 Y
KTA1274 Y
KTA1504 GR

FRONT

VIEW

E C B
(S) (G) (D)
(1) (2) (3)

KTC3199 GR
KTC3203 Y
KTC3265 Y
KTC3194 Y
KTC3875 GR
KRC102 M
KRC102 S
KRC104 M
KRC104 S
KRC107 M

4204UYT7
4204UGT7
4204SRT7

– 18 –

FRONT

VIEW

FRONT

VIEW

BCE

KTC2026

89 79 37 33 23 90 78 73 66 60 59

80

~

86
92

98

8

81
85

93

~~ ~

99

AJN

ARCLK

ARFS

ICM3

ES3889F

No.

EVEN

No.

EVEN

VCD COMPANION CHIP

No.

ODD

No.

ODD

6

1 25 26 31 41 43 51 56 57 62

64
53
32
16

5
100
91

77
75
72
63

CNP1

QM1

CD-BK310V

JK671

VIDEO OUT

M3

CD LOADING

MOTOR

SW3

DISC No.

SW2

CLAMP

SW1

POEN/CLOSE

M1

SPINDLE

MOTOR

M2

SLED

MOTOR

SW4

PICKUP IN

17

OE_

CE_

ICM4

EPROM

IX0408AW

24
22
15

~

13
12

~

2
1

~

21

23
25

~

30
32

­6

M

5

+

4
3
2
1

+

6

M

5

-

+

4

M

3

­2

1

6

6

5

5

4

4

3

3

2

2

1

1

CNP4

6

6
5
4
3
2
1

5
4
3
2
1

CNP3

A

B

DSO_C

55

~

62
64
65

66
68
79

80

50 30

100

LOE#

LROMCE#

LSC1#

TO ICM3
17, 19, 21, 22PIN

ES3880F

VCD PROCESSOR CHIP

~

~

9188

8782

~~

45 44 43 41 3247

12

~

4

ICM2

28

~

13
81

51
31

ARFS

1

AJN

ARCLK

959493

~

2935

CAM. M+

39
38

CAM. M­CAM. M+

42

CAM. M-

41

25

SPDO
SLDO

17

FD

2
1

TO

~

8142122

SP-

SP+
SL+

SL-

IC3

TR-

M63001FP

TR+

FOCUS/TRACKING/

SPIN/SLED DRIVER

FO-

FO+

19

~

16
10

~

6
5

ICM1

~

2

20

1 40

27
26

16
15

B

A

7
6

5
4

22

~

26
31

~

34
36

DRAM

~

1625635T

39
21
35

18 40 24 23 28

+10 V

CD-GND

L-CH

A_GND

TO MAIN

SECTION

R-CH

CLAMP SW

CD RES

SECTION

TO DISPLAY

WRG

+5 V

GND

CLK

DO

CE

DRF

CNP11

CNP12

DI

1

Q2

2
3
4
5
6

9

Q10

40
30

CONT2
CONT3

31

CONT4

32

Q9

RCHO

41

RVSS

47

LVSS

46

8

LCHO

7
6
5
4
3

53

CONT7

76

CONT6

75

CECLDIDOINT

65 66 67 68 69 70 71 72 52 51

~

CONT5

IC2

LC78636E

SERVO/SIGNAL

CONTROL

WRQ

RES

DEF

2
1

SLDO

XOUT

XL2

FDO

SPDO

RFEV

XVDD
RVDD

LVDD

VDD

ADAVDD

VVDD

VDD

XIN

2324252633595735545556

TDO

TE
FE

HFL

19

3

16
15
14

7

50
49
44
36
18

5

73

+5 V

CONSTANT

VOLTAGE

+3.3 V

Q4

-5 V

RFEV

22

FE-

21
20

FE

19

TE­TE

18

HFL

17

30 23 11 9

+3.3 V

LASER

DRIVER

IC1

LA9235M

SERVO AMP.

+3.3 V

Q3

LDD

PD

TIN2
TIN1
FIN2
FIN1

TRACKING COIL
FOCUS COIL

8

7

4
3
2
1

+5 V

PICKUP UNIT

Figure 19 BLOCK DIAGRAM (1/3)

– 19 –

CD-BK310V

1

FM

ANTENNA

SO302
FM ANTENNA
TERMINAL

AM LOOP
ANTENNA

CNP301

1
2

BF301

B.P.F

T303

1

TA7358AP

FM FRONT END

34578

2

FM

L312 T301

RF

AM TRACKING

IC301

T306

FM

OSC

FM
OSC

OSC BUFF

Q302

AM BAND
COVERAGE

+B4

FM IF

6

T302

9

CF303

IC303

LA1832S

FM IFDET.

FM MPX./

AM IF MPX.

450kHz

CF352

T351

AM IF

12 4598 1713

AM MIX

7

STEREO

AM RF IN

AM OSC IN

FM+BGNDAM IF

FM/AM

OUT

10.7MHz

CF351

DET

VCOFM

X351
456kHz

MO/ST

FM/AMMPXIN

1216182123

L

14

R

15

VRK1

MIC

VOLUME

JK1
MIC

FROM VIDEO
CD SECTION

CNP11

TAPE 1

P.B. HEAD

TAPE 2

REC. P.B. HEAD

MIC IN

ICK1

M65856SP

MIC AMP.

LATCH

9

12
13

+B5

CNS11

L-CH
R-CH

L-CH
R-CH

AC BIAS

ERASE

HEAD

CLK

DATA
LOUT

ROUT

L IN
R IN

VCC

QK1

1
2
3

P.B.

REC

40
41

42
36
35
31
32

23

SWITCHING

Q103­Q106

Q107
Q108

BIAS
OSC

+B4

8

5
6

7
1

2
3

ICK2

KIA4558P

OPE AMP.

PLAYBACK AND

PLAYBACK AMP.

L(T1)

1

R(T1)

24

2

L(T2)

R(T2)

23

L NF

3

R NF

22

POP REDUCE

6

L REC

9

16

R REC

REF

14
12

SWITCHING

Q109

Q128
L104

L
R

IC101

RECORD/

P.B

T1/T2
REC

NOR/

T1/T2

HIGH

15 19

SWITCHING

Q111

SWITCHING

13

21

20

H/N

18

17

10

Q110

SWITCHING

+B

FM

4

5

7

8

Q124
L103

L
R

L
R

L NF
R NF

ALC

+B4

REC

VT

20 1 22 15 16 11

+B4

FM

Q360

CONSTANT
VOLTAGE

PB

BIAS

Q126

X352

4.5MHZ

OSC

79

JK601

VIDEO IN

L

AUX

R

TAPE

TUNER

+B3

+B3

IC302

LC72131

PLL(TUNER)

MO/ST

FM/AM

9

L
R

16
10

L

15

R
L

11

AUDIO PROCESSOR

14

R
L

12

CD

13

R

MIC

MOTOR
DRIVER

Q708
Q704

Q705

SOLENOID
DRIVER

L

CLK

DO

DI

CE

3

456

2110

IC601

LC75341

7 18 8 17 3

R

TAPE

MECHANISM

ASS'Y

17

23

+B4

DI

CE

CLK

Q121
Q122

MUTING

–B2

1
2

24
21

4

R
L

IC702

4

IC703

KIA4558P
OPE AMP.

+B4

8

Q603
Q604

1

7

–20dB

ATT

Q605
Q606

SYSTEM

MUTE

REC/PLAY

IC70

IX04

T1/T2

BIAS

Figure 20 BLOCK DIAGRAM (2/3)

– 20 –

CD-BK310V

2

+B4

13412 1318 19242536 3738392

SP. DET.

5

L

6

2

R

3

KIA4558P

OPE AMP.

+B4

8

IC903

7
1

VF1

L
R

POWER AMP.

R

15

+Vcc

VF2

+B5

+B6

–VF

–Vcc

9

8

M12V

+B3

+B4

A+10V

UN-SW5V

+5V

CONSTANT VOLTAGE REGULATOR

IC902
STK4029S

1

L

0dB
TT

Q605
Q606

SYSTEM

MUTE

EC/PLAY

IC701(2/2)

IX0411AW

T1/T2

28

29

~~~

Q701-Q703
Q710-Q712

67

-

78

79

VLOAD

80

-

85
86

-

91
92

­VDD

100

2

+B5

Q906
Q905
Q907
Q908

IC901

1

STK40271
POWER AMP.

15

–Vcc

+Vcc

9

Q902

8

Q901
Q903
Q904

7

R-OUT
L-OUT

11

13

–B1

+B1

VOLTAGE
REGULATOR

Q850

Q851

Q821

Q852

CONSTANT
VOLTAGE
REGULATOR

KIA7805AP

AN78L05

FL701

FL DISPLAY

~

+B5

SPAN

VDD

+B5

VDD

SP RELAY

ON-OFF

61

LATCH

KARAOKE

SYSTEM MICROCOMPUTER

6541 7 910111213 151617 20212223

XL701

4.194304MHz

RESET

R-OUT

7

L-OUT

11

13

–B2

+B2

D802

D803

D804~D807

Q801

RESET

Q709

IC701(1/2)
IX0411AW

+B5

SELECTOR

F803

T5A L 250V

F801

T4A L 250V

F802

T4A L 250V

F804

T5A L 250V

F806

T2A L 250V

F805

T2A L 250V

JOG701

JOG

RX701
REMOTE

1

404142434445464849505152535455565761

39
38
37
36
35

+B5

34

AVDD

33

-

31
23

CLK

T801

24

T.F.

22
58

RY901

RY902

CEDIDO

--

Q909

POWER TRANSFORMER

INPUT/OUTPUT

FAN MOTOR

DRIVER

Q910

SECTION

3

SENSOR

2

KEY
SW701-SW707
SW709-SW717
SW722-SW734

IC704

BU2092F

EXPANDER

1
2

IC704

3

4

TO CD

+B3

JK670

HEADPHONES

+B6

M

MOTOR

+B6

M

MOTOR

MAIN
SUBWOOFER

SO901

SW801

VOLTAGE

SELECTOR

230-240 V

220 V
127 V
110 V

M901

FAN

M902

FAN

+B5

+B6

18

AC POWER
SUPPLY CORD
AC 110/127/220/
230-240 V, 50/60 Hz

BIAS

Figure 21 BLOCK DIAGRAM (3/3)

– 21 –

CD-BK310V

S

O

D

O

S

E

T

F

V

T

O

S

F

S

0

0

2

C

/
T

A

PICKUP UNIT

B

C

D

E

TR+

FO+
FO–

TR–

F

CD MOTOR PWB-F

M1

SPINDLE

G

MOTOR

M2

SLED

MOTOR

SW4

PICKUP IN

GND

M

M

VCC

VREF

TR–
TR+

FO+

FO–

+
–

+
–

VIDEO CD PWB-B(1/2)

I

LC78

330

C42
68P

(CH)

4

C47

R8

C23

0.047
R79 1.5M

C24

2.2/50
C22

100P

(CH)

R80

R15
10K

C28

47/10

2

+B

SERVO

R12
680

C21

0.1

R11
12K

R14

1.2K

1M

C26

0.047

0.022

CON

7

R13
680

C81 0.0
PCKI

SLCI

C27

0.1

PH(RFEN

ADAVD

ADAVS

PHRE

C29

BHRE

EFBL

R44 1K

PD

VV

VVD

SLC

EFMI

JIT
JITT

VR

TBL

FD

R35

1K

PD

F

H

B

T

R

1.

R50

C55

47

+B

0.01

FIN1

1

REF

FIN2

2

REF

TIN1

3

REF

TIN2

4

REF

REF1

5

VREF

C8

6

0.1
7

APC

LDD

8

GND

9

LDON

10

ODRV

11

AGON

AGCON

12

EFBL

13

TEST0

14

TES1

LPF

15

REF

REF

REF

REF

REF

ODRV

PH/BH

REF
REF

AGCON

DH

REF

PH

LPF
REF
LPF

REF

ODRV

REF

30

RFSW

29

28

27
26
25
24
23
22
21
20
19
18
17
16

VCC

R42

56K

RF–

RF

PH
BH

RFEV
FE–
FE
TE–
TE
HFL

TEST

R3 47K

IC1

LA9235M

C88

SERVO AMP.

1000/6.3

C19

0.022

R48

6.8K

C50

100/10

TDO
FDO

C46

0.022

+B

C49 100/10

–

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19
20
21

–

+

+

–

–

+

+

IC3

M63001FP

–

–

+

+

–

+

IC3

M63001FP

FOCUS/TRACKING/SPIN/SLED DRIVER

R5

39K

R6

27K
C13

0.01
C14

0.33

R4

10K

47/6.3

0.022

4

–

+

–

C11

C12

C18

6P(CH)

R7

6.8K

+

–

+

5

C25

0.022

R10

27K

C20

0.1
C17

0.0047

C82

0.022

13

42

+

–

41

+B

–

+

40
39
38
37
36

100/6.3

35
34
33
32
31
30
29

+B

28
27
26

–

25

+

+B

–

+

24

+B

23

+

–

22

+B

CNS1B

7

7

6

6

E

5

5

A

4

4

B

3

3

F

2

2

C

1

1

CNS2B

1

1

2

2

3

3

4

4

5

5

PD

6

6

VR

7

7

LD

8

8

CNS3B

6

6

5

5

4

4

3

3

2

2

1

1

7
6
5
4
3
2

1

CNS2A

1
2
3
4
5
6
7
8

6
5
4
3
2
1

CNS3A

7
6
5
4
3
2

1

1
2
3
4
5
6
7
8

6
5
4
3
2
1

R51 68K
R52 56K
R53 56K
R54 68K

CNP10

TR–
TR+
FO+
FO–
GND
PD
VR
LD

CNP3

SP+
SP–
SL+
SL–

PUIN

GND(D)

R56
56K

C53

47/6.3

0.001

3.2 V

8.4 V

1.6 V

Q3

KTA1504 GR

LASER

DRIVER

C52

0.01

C51

R47

3.3

TIN1
FIN1
FIN2
TIN2

R55

56K

C54

47/10

C6 100/6.1

R25
10K

CNP9

CNS1A

H

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

1

23456

Figure 22 SCHEMATIC DIAGRAM (1/12)

– 22 –

CD-BK310V

IC2
LC78636E
RVO/SIGNAL

CONTROL

8

2

7

0

PD01

R13
680

C81 0.022
PCKIST

SLCIST

0.1

ADAVDD

ADAVSS

PHREF

29

BHREF

R44 1K

PD02

VVSS

VVDD

HFL

SLCO

EFMIN

JITTV
JITTC

VREF

TBLO

TDO

FDO

R35

1K

1.5K

FR

BH

FE
TE

R37

1

2
3

4
5

6
7
8
9

10
11
12
13
14
15
16
17
18

19
20
21
22
23
24

R38

1

270

R21

470

M

1

1
1

K
14

2K

C27

PH(RFENV)

.022

R68

1K

CONT7

V/P

GENERAL

C71 100P(CH)
C72 0.01
C73 100P
(CH)

C75

C76

R67

1K

C77

C78

C80 0.1

CONT6

VSS

VDD5V

C75~C78 100P(CH)

WRQ

RES

DEF

EFMO

R95
10K

OPENNMP3O

DISC-NO

R94
10K

+B

FSEQ

DEFECT

IC2

CONTROL

JITER

DEFECT

CONTROL

A/D

D/A

SLDOSPDO
R39

470

FRAME SYNC

DEFECT,PROTECT

EFM DECODE

CLV

CONTROL

SW

AUTO

ADJUST

GENERAL

CONT1

LASER

FG(D_Vref)

PLL

VCEC

SLICE

LEVEL

SW

+
–

S/H

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

6

R22
470

KDS193

1.2 V

D22

KDS193

2

0 V

1

3

KRC102 S

D21

SERVO

PROCESSEROR

CONT4

CONT3

CONT2

R40 1.2K

R45 1.2K

R46 1K

0 V

Q2

LC78636E

ERROR

CORRECT

CONT5

C2F

PCK

VDD

+B

R17 1K

R16
10K

MUTE

INTERPOLATION

AUDIO

OUT

FSX

C30

0.022

DOUT

C31

100/10

DI

DO

COMMAND

INTERFACE

SUBCODE

OUT

SERIAL

AUDIO IN

EXTERNAL

DEEMPHASIS

ATTENUATION

FILTER

DIGITAL

1BIT

DAC

EMPH

EFLG

TEST

9

R71 1K
R72 1K
R73 1K

3

L62 2.2µH

CE

CL

65 66 67 68 69 70 71 72 73 74 80 79 78 77 76 75

SBCK

64

PW

63

SBSY

CRC

62

SFSY

DECODE

61

16M

60

DATA

59

DATACK

58

LRSY

57

ASDFIN

56

ASDACK

55

ASLRCK

54

XVSS

53
52

XOUT
XIN

CLOCK

51

XVDD

GENERATOR

50

RVDD

49

RCHO

48

RVSS

47

LVSS

LPF

46

LCHO

45

LVDD

44

MUTER

43

MUTEL

42
41

+B

L61

0.82µH

+B

Q4: CONSTANT VOLTAGE

R75 100
R76 1K
R77 1K
R78 1K

16.9344MHz

R20
220

+B

+B

R114A

+B

R113A

Q4
KTC3203 Y

0 V

ZD61

+B

C44 0.022

C45 100/10

1112

10

XL2

C85

8P(CH)

C86

10P(CH)

C34 0.022

R117A

330

R118A

2.2K

0.6 V

22K

CE1
1/50

1.1 V

2.2K

0 V

R112A

330

C83

1.5K

R116A

0.047

+B

0 V

R58

3.2 V

68

C64

47/6.3

Z02W3.9Z

+B

0 V

Q10

0 V
0 V

Q9

KTC3875 GR

KTC3875 GR

C87

1000/6.3

C84

0.047

+B

R97

3.9K

CD SIGNAL

DATA

DATACK

LRSY

+B

R-CH
AGND
L-CH

DGND

+B
+B

+B

+5V
A10V

R-CH
A_GND

L-CH

WRQ
DRF
CE
DO
DI
CLK
CD RES
CLAMP SW
GND

OPEN/CLOSE

DISC-NO

LD
LD

A10V

D_GND

RAC/NTSC

CLAMP

GND(D)

M+
M–

+5V

RES

CNP4

1
2
3

4

CNP11
1
2
3
4
5
6

5
6
7
8

9

CNP12
1

2
3
4
5
6
7
8
9

10
11

1
2
3
4
5
6

TO MP3 SECTION

P24 1-E

FROM

MAIN PWB

P26 1-A

CNS11

TO MP3
SECTION
P25 12-B

TO MP3
SECTION
P24 1-E

FROM

DISPLAY PWB

P29 10-B

CNS703

TO MP3
SECTION
P24 1-E

BI4

OPEN/CLOSE

1

1

2

2

3

3

4

4

5

5

+

6

6

—

CNS4

CD LOADING

MOTOR PWB-E

SW1

CLAMP

NUMBER

M

M3 T/T

CD LOADING

MOTOR

SW2

SW3

DISC

• 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 –