Sharp CD-BK133 Schematic

CD-BK133W

SERVICE MANUAL

No. S0173CDBK133W

MINI COMPONENT SYSTEM

MODEL CD-BK133W

CD-BK133W Mini Component System consisting of
CD-BK133W (main unit) and CP-BK133 (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

SPECIFICATIONS ............................................................................................................................................................. 2

NAMES OF PARTS ........................................................................................................................................................... 3

OPERATION MANUAL ...................................................................................................................................................... 5

VOLTAGE SELECTION..................................................................................................................................................... 6

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 6

DISASSEMBLY.................................................................................................................................................................. 7

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 10

ADJUSTMENT ................................................................................................................................................................. 11

BLOCK DIAGRAM ........................................................................................................................................................... 13

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................16

VOLTAGE ........................................................................................................................................................................ 32

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 33

TYPES OF TRANSISTOR AND LED............................................................................................................................... 33

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 34

TROUBLESHOOTING..................................................................................................................................................... 35

FUNCTION TABLE OF IC................................................................................................................................................ 39

FL DISPLAY..................................................................................................................................................................... 46

REPLACEMENT PARTS LIST/EXPLODED VIEW

SHARP CORPORATION

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

CD-BK133W

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.

WARNUNG- UNSICHTBARE LASERSTRAHLUNG WENN GERÄT
GEÖFFNET. NICHT IN DIE STRAHLUNG SCHAUEN ODER
DIREKT MIT OPTISCHEN HILFSMITTELN BETRACHTEN.

ATTENTION- RAYON LASER INVISIBLE EN CAS D’OUVERTURE.
NE PAS REGARDER LE FAISCEAU DIRECTEMENT OU AVEC DES
INSTRUMENTS OPTIQUES.

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

CD-BK133W

General

Power source
Power consumption

Dimensions

Weight

AC 110/127/220/230 - 240 V, 50/60 Hz
80 W

Width: 270 mm (10-5/8")
Height: 300 mm (11-4/5")
Depth: 344 mm (13-1/2")

6.1 kg (13.4 lbs.)

Amplifier

Output power

Output terminals

MPO: 104 W (52 W + 52 W) (10 % T.H.D.)
RMS: 66 W (33 W + 33 W) (10 % T.H.D.)

Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)

CD player

Type
Signal readout
D/A converter
Frequency response
Dynamic range

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)

SPECIFICATIONS

Tuner

Frequency range

Cassette deck

Frequency response
Signal/noise ratio

Wow and flutter

CP-BK133

Type

Maximum input power
Rated input power
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)

Twin-Drive speaker system
10 cm (4") full-range speaker x 2

66 W
33 W
6 ohms

Width: 200 mm (7-9/10")
Height: 300 mm (11-4/5")
Depth: 240 mm (9-2/5")

3.3 kg (7.3 lbs.)/each

– 2 –

CD-BK133W

■ Display

CD-BK133W

NAMES OF PARTS

1. Disc Number Indicators

2. Timer Indicator

3. Tape 2 Record Indicator

4. Sleep Indicator

5. Extra Bass Indicator

6. CD or Tuner Memory Indicator

7. FM Stereo Mode Indicator

8. FM Stereo Receiving Indicator

9. CD Repeat Play Indicator

10. CD or Tape Play Indicator

11. CD Pause Indicator

■ Front panel

1. Disc Tray

2. Timer Set Indicator

3. On/Stand-by Button

4. Volume Up and Down Buttons

5. Disc Tray Open/Close Button

6. Disc Skip Button

7. Equaliser Mode Select/Extra Bass/Demo Mode Button

8. Tape 2 Cassette Compartment

9. Tape 1 Cassette Compartment

10. Tuning and Time Up Button

11. CD Track Down or Fast Reverse, Tape 2 Rewind,

Tuner Preset Down Button

12. CD Track Up or Fast Forward, Tape 2 Fast Forward,

Tuner Preset Up Button

13. CD Button

14. Tuner (Band) Button

15. Tape (1 2) Button

16. Clock Button

17. Timer/Sleep Button

18. Headphone Socket

19. CD or Tape Stop Button

20. CD Play or Repeat, Tape Play Button

21. Tuning and Time Down Button

22. Memory/Set Button

23. Tape 2 Record Pause Button

24. Microphone Level Control

25. Microphone Socket

123 4 5 6 7 8

11109

4

5

1

6

2
3

7

8

10

16
17

13

15141211

9

19

20

18

21

23 24

22

25

■ Rear panel

1. AC Power Input Socket

2. AC Voltage Selector

3. Speaker Terminals

4. Span Selector Switch

5. AM Loop Aerial Socket

6. FM Aerial Earth Terminal

7. FM 75 Ohms Aerial Terminal

– 3 –

21

56

743

CD-BK133W

CD-BK133W

■ Remote control

1. Remote Control Transmitter

2. Disc Number Select Buttons

3. CD Pause Button

4. CD Memory Button

5. CD Clear Button

6. CD Track Down or Fast Reverse Button

7. CD Track Up or Fast Forward Button

8. Tape 1 Play Button

9. Equaliser Mode Select Button

10. Tape 2 Record Pause Button

11. CD Button

12. On/Stand-by Button

13. Extra Bass Button

14. Disc Skip Button

15. CD Stop Button

16. CD Play or Repeat Button

17. CD Random Button

18. Tuner Preset Up and Down Buttons

19. Tape 1 or Tape 2 Stop Button

20. Tape 2 Play Button

21. Tape 2 Rewind Button

22. Tape 2 Fast Forward Button

23. Tape (1 2) Button

24. Tuner (Band) Button

25. Volume Up and Down Buttons

10
11

12

13

1

14

2

3
4

5
6

7

15
16

17
18

19
20
21

8

22
23

9

24

25

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.

CP-BK133

1. Full-Range Speaker

2. Bass Reflex Duct

3. Speaker Wire

2

1

2

– 4 –

1

3

CD-BK133W

System Connections

OPERATION MANUAL

Setting the AC voltage selector

Check the setting of the AC voltage selector located on the rear panel before plug-

ging the unit into an AC 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 num-

ber 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, connect the AC power lead to the unit

and then into the wall socket. If you plug in the unit first, it will enter

the demonstration mode.

Notes:

Unplug the AC power lead from the A C soc k et if t he unit will not be in use for a pro­longed period of time.

Never use a power lead other than the one supplied. Use of a power lead
other than the one supplied may cause an electric shock or fire.

AC Plug Adaptor

In areas (or countries) where an AC socket as shown in illustration is used, con-

nect the unit using the AC plug adaptor supplied with the unit, as illustrated. The AC

plug adaptor is not included in areas where the AC 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 (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:

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 EQUALIZER/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.

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.

[Refer to "Clearing all the memory (reset)".]

4

Press the TUNING/TIME ( or ) button to a djust 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:

1 Clear all the programmed contents. [Refer to "Clearing all the memory (reset)".]
2 Perform "Setting the clock" from the beginning.

– 5 –

CD-BK133W

Troubleshooting

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 memory 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 EQUALIZER/X-BASS/DEMO but-

ton, 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

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

Remove all CDs 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 AC socket.

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:

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')

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).

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCB0012AW00

QACCE0007AW00

92L24801800222

92L24802131030

QPLGA0004AWZZ QPLGA0003AWZZ

– 6 –

DISASSEMBLY

(B1)x2
ø3x7mm

(B1)x2
ø3x7mm

(B1)x2
ø3x10mm

(B1)x2
ø3x7mm

Rear
Panel

Side Panel
(Right)

Side Panel
(Left)

(A1)x2
ø3x12mm

(A1)x2
ø3x12mm

Top Cabinet

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-BK133W

Note 1: How to open the changer manually. (Fig. 8-1)

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.

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.

(Fig. 8-2)

CD-BK133W

STEP

10 Tape Mechanism 1. Open the cassette holder. .. 8-4

11 Turntable 1. Hook.........................(L1) x2 8-5

12 Disc Tray 1.

13 CD Servo PWB 1. Screw ...................... (N1) x1 9-1

14 CD Mechanism 1. Hook........................ (P1) x2 9-2

REMOVAL

1 Top Cabinet 1. Screw ...................... (A1) x4 7-1

2 Side Panel 1. Screw ...................... (B1) x8 7-1

(Left/Right)

3 CD Tray Cover/ 1. Turn on the power supply,.. 7-2

CD Player Unit open the disc tray, take out

4 Rear Panel 1. Screw ...................... (D1) x6 7-2

5 Front Panel 1. Flat Cable ............... (E1) x1 8-3

6 Main PWB 1. Socket ......................(F1) x3 8-3

7 Mic PWB 1. Screw ......................(G1) x1 8-4

8 Display PWB 1. Screw .................... (H1) x11 8-4

9

Headphones PWB

(Note 2) 2. Socket ..................... (N2) x4

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

2. Hook........................ (C1) x3

3. Screw ...................... (C2) x1

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

5. Socket ..................... (C4) x2

2. Socket ..................... (E2) x4

3. Tip ........................... (E3) x1

4. Screw ...................... (E4) x3

5. Hook........................ (E5) x2

2. Screw ....................... (F2) x8

2. Bracket.................... (G2) x1

2. Flat Cable ............... (H2) x1

1. Screw .......................(J1) x1 8-4

2. Bracket..................... (J2) x1

2. Screw...................... (K1) x6

2. Cover ....................... (L2) x1

2.

3.

3. Hook........................ (N3) x2

2. Hook........................ (P2) x3

PROCEDURE

Turn fully the lock lever in the
arrow direction
While holding the lock lever, rotate
the cam gear until the cam gear
rib engages with the clamp lever.
Push the slide chassis backward
to engage the claw with the
groove and remove it in the
direction of the arrow..(M1) x6

.

FIGURE

8-1
8-2

8-6

CD-BK133W

(C3)x1

Pull

Rear
Panel

(C2)x1
ø3x10mm

(D1)x5
ø3x10mm

CD Servo
PWB

(D1)x1
ø3x7mm

(C4)x2

Figure 7-1

Figure 7-2

CD Tray Cover

(C1)x3

1

1

2

Pull

CD Player
Unit

(C3)x1

– 7 –

CD-BK133W

Figure 8-1

Lock Lever

CD Player Unit
(Bottom View)

Clamp Lever

CD Player Unit
(Top View)

Display
PWB

(H1)x11
ø3x10mm

Tape
Mechanism

(K1)x6
ø3x10mm

(J2)x1

(J1)x1
ø3x10mm

Headphones
PWB

(H2)x1

Lug Wire

Figure 8-4

(L2)x1

(G2)x1

(G1)x1
ø3x10mm

Mic PWB

Front
Panel

Open

Cassette
Holder

Turntable

(F1)x2

(E1)x1

(E5)x1

Pull

(F2)x3

ø3x10mm

(E2)x1

(F1)x1

Figure 8-2

(F2)x5

ø3x10mm

(E2)x1

Headphones
PWB

Front
Panel

Cam Gear Rib

Slide
Chassis

(L1)x2

CD Player Unit

Figure 8-5

(M1)x3

3

(E5)x1

Pull

2

Main PWB

Figure 8-3

(E4)x3

ø3x8mm

(E2)x2

(E3)x1

1

(M1)x3

Figure 8-6

– 8 –

CD-BK133W

(P2)x3

(P1)x1

(P1)x1

Slide
Chassis

CD
Mechanism

(N3)x2

(N2)x2

(N1)x1
ø3x8mm

(N2)x2

CD Servo
PWB

Slide
Chassis

Figure 9-1

CP-BK133

These speakers CP-BK133 is available in assembles only and
may not be disassembled.

Figure 9-2

– 9 –

CD-BK133W

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 5 and 10 of the disassembly method to
remove the tape mechanism.

How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 10-1)

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. 10-2)

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

How to remove the pinch roller (TAPE 1/2)
(See Fig. 10-3)

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)x2
Ø2x9mm

TAPE 1

TAPE 2

Figure 10-1

Clutch Ass'y

Record/Playback
Head

Clutch Ass'y

Playback
Head

How to remove the belt (TAPE 2) (See Fig. 10-4)

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. 10-4)

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. 10-5)

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

Motor

Clutch Ass'y

(F1)x2
Ø2.6x5mm

TAPE 2

(B1)x2
Ø2x9mm

Pinch Roller
(C1)x1

FF/REW
Belt
(D2)x1

Figure 10-2

Pull

<B>

Figure 10-3

Motor

<A>

Pinch
Roller
Pawl

TAPE 2
Main Belt
(D1)x1

Motor

TAPE 1
Main Belt
(E1)x1

– 10 –

Main Belt
(D1)x1

TAPE 1

FF/REW
Belt
(E2)x1

Figure 10-4Figure 10-5

CD-BK133W

CD MECHANISM SECTION

Perform steps 1, 2, 3, 11,12, 13 and 14 of the disassembly
method to remove the CD mechanism.

How to remove the loading motor
(See Fig. 11-1)

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

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

How to remove the pickup (See Fig. 11-2)

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) x 1 pc.

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.

Slide
Chassis

(B3)x2
ø2.6x6mm

Loading Motor

(A1)x2

Figure 11-1

Stop Washer
(B1)x1

Pulley

Drive Belt
(A2)x1

Loading
Motor PWB

(A1)x1

(A1)x2

Loading
Motor

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter Specified Value

Play: TW-2111 Tape 1: Over 80 g

• Torque Check

Torque Meter

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 2: Over 80 g

Specified Value

Tape 1

Tape 2

Pickup

Shaft
(B4)x1

Gear

CD Mechanism

(B2)x1

Figure 11-2

• Tape Speed

Test Tape

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

Adjusting

Point

motor. (Load

Specified

Value

TAPE MECHANISM

Instrument

Connection

resistance:
6 ohms)

– 11 –

Tape
Motor

Variable Resistor in motor

Figure 11-3

CD-BK133W
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

MAIN PWB

AM
TRACKING fL

TP302

COVERAGE fL

R356

AM BAND

Display

CNP302
AM LOOP
ANTENNA

T303

IC303

FM RF

T306

T351

AM IF

Setting/

Adjusting

Parts

SO302

FM ANTENNA

TERMINAL

L312

T302

FM IF

TP301

IC301

Instrument

Connection

T301

R316

• FM RF

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

Test Stage

Frequency Frequency

Display

FM Band — 87.50 MHz T301(fL): *1
Coverage 1.3 V ± 0.1 V

FM RF 98.00 MHz 98.00 MHz L312 *2

(10-30 dB)

Setting/

Adjusting

Point

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

• FM IF

Signal generator: 10.7 MHz, FM modulated

Test Stage

Frequency Frequency

Display

IF 10.7 MHz 98 MHz T302 *1

Setting/

Adjusting

Point

(Turn the
core of trans­former T302
fully counter­clock wise)

*1. Input: Antenna Output: TP301

FM BAND
COVERAGE fL

Instrument

Connection

Instrument

Connection

Figure 12-1 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.12-2 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

CD ERROR CODE DESCRIPTION

Error State Code

[Servo System Error]
0001 Cannot detect Pickup-in SW
0002 DSP access error

[Error during close operation]
0101 Open/Close SW not functioning (Low → High)
0103 Open/Close SW not functioning (High → Low)

[Error during open operation]
0201 Open/Close SW not functioning (Low → High)
0203 Open/Close SW not functioning (High → Low)

0302 Pickup-in SW is not detected
0306 During Disc 1 search, Open/Close SW or Clamp SW

0307 Clamp SW not function (Low → High)
0308 Clamp SW not function (High → Low)

[Error during skip operation]

or Disc SW do not change to low.

T

Stopped

CH1=500 mV

CH2=200 mV

DC 10:1

CH3=1 V

DC 10:1

DC 10:1

T

FDO

1

TE

3

1999/04/05 20:26:47

500 ms/div

(500 ms/div)

NORM:20 kS/s

– 12 –

EFBL

2

Smoothing : ON CH1 : 0.000 V
BW : FULL

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

Figure 12-2

=Record Length=

Main : 100K
Zoom : 2k

CH2
v/DIV
200 mV

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

TO MAIN SECTION

TO DISPLAY SECTION

SW1
OPEN/
CLOSE

SW2

CLAMP

SW3
DISC

NUMBER

316452

M

+-

M3

T/T UP/DOWN

LOADING

BI4

CD-BK133W

+3.3V

XL1

16.943 MHz

Q1

CONSTANT

VOLTAGE

316452

CLAMP SW

GND

RES

CLK

DI

DO

CE

DRF

WRQ

LVSS

IC2

RVDD

RVSS

HFL

LASER

DRIVER

INT

TE

54

327168910

Q2

30

CONT2

CONT3

CONT4

CONT5

SLDO
SPDO

FDO

PH

FE

15167

14

Q3

TDO

+3.3V

CNP12

74
64
56
55
54
53

40

19
13

3

33

26
25
24
23

+B4

18

40

24

316452

17 25

12

VCC1
VCC4

FOCUS/TRACKING/

VCC2
VCC3

4765

CD+B(+B4)

AGND

R-CH

DGND

L-CH

15432

CNP11

45

65

CE

66

CLK

67

DI

68

DO

69

INT

70

WRQ

71

RES

72

DEF

48 46 47 32 31

LCHO

RCHO

LC78641E

SERVO/SIGNAL

VDD

VDD5V

73

CONTROL

LVDD

44

49

+3.3V

XOUT

52

XIN

51

VVDD

ADAVDD

5

36

18

+3.3V

CNS4

CNP4

41 3839

42

IC3

M63001FP

SPIN/SLED

DRIVER

15

35

29
22

21

14

8

162826 27

+B4

PICKUP UNIT

IC1

LA9235M

SERVO AMP.

22

RFEV

21

FE-

20

FE

19

TE-

18

TE

17

HFL

FOCUS COIL

TRACKING COIL

30 23 11 9

+3.3V

Figure 13 BLOCK DIAGRAM (1/3)

– 13 –

LDD

LDS

TIN2
TIN1
FIN2
FIN1

8

7

4
3
2
1

M1

SPINDLE

MOTOR

M2

SLED

MOTOR

M

M

SW4

PICKUP

IN

CD-BK133W

V

FM

ANTENNA

SO302

AM LOOP

ANTENNA

CNP302

JK1
MIC

IC301

TA7358AP

FM FRONT END

1

BF301
B.P.F

FM
RF

1
2

AM TRACKING

T303 T306

5

7

L312 T301

FM

AM BAND
COVERAGE

83

OSC

OSC

Q302

6
9

FM

FM IF

OSC BUFF

VT

CF302T302

4.5 MHZ

AM OSC IN

X352

T351

AM IF

21

AM MIX

21

AM RF IN

450kHz

CF352

IC302

Q401
Q402

LC72131

PLL(TUNER)

FM+B

SWITCHING

Q403~
Q406

VR401

VOLUME

FROM CD SECTION

SWITCHING

MIC

CNP11

CNS601

1
2
3

20 22 11

OSC

+B3

FM

Q360

TUNER

7

TAPE

CD

1615

L

R

L

R

L

R

FM/AM

9

10
15
11
14
12
13

10.7 MHz
X351

CF351

456 kHz

VCC

1623

FM

MPXIN

13

DET

VCO

14

L

MO/ST
R

15

FM/AM

12

98517

4

GND

AM IF

FM/AM

OUT

18

7

IC303

STEREO

LA1832S

FM IF DET.

FM MPX./

AM IF

CLK

DO

DI

CE

5413

6

17

VDD

MO/ST

21

10

+B3

23

IC601

LC75341

AUDIO PROCESSOR

178

1

DI

2

CE

24

CLK

R

21

4

L

3

+B5

Q601
Q602

SYSTEM

MUTE

L-CH

TAPE 1

TAPE 2

R-CH

L-CH
R-CH

ERASE

HEAD

P.B. HEAD

REC./P.B. HEAD

REC.

P.B.

AC BIAS

SWITCHING
Q107
Q105

Q104
Q106

SWITCHING

Q112
L103

BIAS
OSC

L(T1)
R(T1)
L(T2)
R(T2)
L NF

R NF

L REC
R REC

1

24

2

23

3

22

REC

9

16

12

Q101

SWITCHING

13

P.B

L

4

21

R

H/N

7

18

L NF

8

R NF

17

T1/T2

19

SWITCHING

Q114

+B3

P.B.

L
R

IC101

AN7345K

RECORD/

PLAYBACK AMP.

BIAS

Q113

44

IC701

IX0362AW(2/2)

42 43

50
51

REC.

+B2

Q706

MOTOR
DRIVER

+B2

Q704
Q705

SOLENOID

DRIVER

Q102
Q103

MUTING

REC/PLAY

T1/T2

BIAS

TAPE

MECHANISM

ASS'Y

VF1

–

UN_

Figure 14 BLOCK DIAGRAM (2/3)

– 14 –

CD-BK133W

S

-

312

10

VLOAD

79

80

–

99
71

-

78

VDD

4

1

+B5

IC901

STK402-070N

POWER AMP.

1

L

15

R

+Vcc

8

-Vcc

7

10

13

9

-B1

FL701

FL DISPLAY

-

30

11

+B5

IC701

IX0362AW(1/2)

SYSTEM

MICROCOMPUTER

56 78

L-OUT
R-OUT

RESET

1 0 16 1 7 20 2123602224

9

Q707

1112

+B5

XL701

4.1943 MHz
+B6

RESET

VDD

T2.5A L 250V

T2.5A L 250V

4546

VDD

–

F902

F901

333231

100

40

AVD1

AVDD

CLK

CEDIDO

39

35
34
33

–

31

LR901

+B2

FAN MOTOR

DRIVER

+B5

+B6

Q701

LED722

RX701

REMOTE

2

SENSOR

1

+B5

KEY
SW701-SW703
SW709-SW721
SW723-SW725

TO CD

SECTION

JK901

HEADPHONES

Q901

KIA7042A

SYSTEM

RESET

+B5

3

+B5

SW601

SPAN

SELECTOR

SO901
SPEAKER
TERMINAL

+B5

M

IC704

M901

FAN MOTOR

+B5

T2

AS

4

+B1

IC902

RS604

M+10V

+B2

VF1

M

VF2

+B3

A+10V

VOLTAGE REGULATOR

–VP

CD+B

+B4

UN_SW_5V

+B5

Q905

CONSTANT

VOLTAGE

IC903

KIA7810AP

­AC IN

+

1

AC IN

2

IC904

KIA7805P

VOLTAGE

REGULATOR

3

T4A L 250V

D906~D909

Q908

F903

T4A L 250V

F904

F905

T2.5A L 250V

PT801

POWER

TRANSFORMER

T.F.

SW602

VOLTAGE

SELECTOR

230-240 V

220 V
127 V
110 V

SO902
AC INPUT SOCKET
AC 110/127/220/230-240 V

50/60 Hz

AC POWER
SUPPLY CORD
AC 110/127/220/230-240 V

50/60 Hz

Figure 15 BLOCK DIAGRAM (3/3)

– 15 –

CD-BK133W

R

R

3

R128

68K

R

2

0

3

A

B

C

MIC PWB-C

D

JK1
MIC

E

F

G

R409

CNP11

P25 12 - C

TO CD SERVO PWB

R404

4.7K

C403
220P

C402

Q401

1/50

9014 C

5.6K
C405

0.0047

TAPE 1

PLAYBACK HEAD

ERASE HEAD

RECORD/PLAYBACK

CNS601

1

2

3

4

5

P20 1 - F

TO POWER SECTION

R403

1/50

C404

1M

R407

Q402

9014 C

R408

560

R-CH

L-CH

TAPE 2

R-CH

TAPE 2

HEAD

L-CH

15

16

17

18

19

470K

R402

1

2

3

4

5

1K

R401

BI601

1.5K

R-CH

A_GND

L-CH
CD_GND

+5V

L

GND(A_GND)

R

+5V

GND(CD_GND)

C408

220/6.3

C406

1/50

C401

1/50

VR401

50K(A)

MIC

VOLUME

+B

1

2

3

1

2

3

4

5

6

7

FM SIGNAL
PLAYBACK SIGNAL

RECORD SIGNAL
CD SIGNAL

MIC SIGNAL

Q601, Q602: SYSTEM MUTE

R601

330

Q601

R603

2SC3331 S

3.3K

R604

3.3K
Q602

2CC3331 S

R602

330

JP402

JP401

1

1

2

2

3

3

R405
100K

TAPE1_R

1

A_GND

2

TAPE1_L

3

1

2

3

4

5

6

7

CNP102 CNP101

R410

10K

C407

GND

R426

10K

R427

10K

4.7/50
R428

10K

C102
560P

C103
560P

R609

1.5K

R607

2.2K
C601

0.001

C602

0.001
R608

2.2K

R610

1.5K

Q403

R417

9014 C

470K

R412

330

R418
470K

Q404

R414

9014 C

330
R419
470K

R415

Q405

330

9014 C

R420
470K

R416

330

Q406

9014 C

Q403~Q406: SWITCHING

Q104

2SC1845 F
C104
180P

C105
180P

R106

2.2K

SWITCHING

R108

3.3K

Q106

2SC1845 F

Q107

2SC1845 F

R109

3.3K

SWITCHING

R107

2.2K

Q105

2SC1845 F

R421

4.7K

R422

4.7K

R423

4.7K

R424

4.7K

C409

1/50

C435

1/50

R429

R111

4.7K

R113

47K

C605

0.022

R615

3.9K

22K

C414

220/10

KT-L

R110

R112

4.7K

R433
470K

Q407

9014 C

47K

C609

0.1(ML)

KCD-L

C433

R435

2.2K

GND

C434

1/50

C412

1/50

R104

1K

R105

1K

Q108

C604
10/50

C615

C616

220P

220P

C607
10/50

C611

0.1(ML)
C613

0.0027(ML)

C617

1/50

C629

1/50

C623

1/50

C625

R431

2.7K

R430

22K

2SC3331 S

C106
560P

C107
560P

R425

KT-R

1/50

C627

1/50

C420

1/50

330

R101

KTA1266 GR

C101

0.047

10K

SWITCHING

R617

3.3K

1/50

R434

4.7K

2SC3331 S

Q109

RECORD/PLAYBACK AMP.

R437
470K

Q408

9014 C

Q101

IC101

AN7345K

R102

10K

DI

1

CE

2

VSS

3

LOUT

4

+

–

5

LBASS

+

–

6

LTRE
LIN

7

LSELO

8

+

AUX

9

L4

DECK

10

L3

TUN

11

L2

CD

12

L1

R436

4.7K

R438

2.2K

+B

KRC104 M

2

R103

4.7K
2

KRC104 M

SWITCHING

R114

1K

C112
330P

R
L

123456

C113
330P

R115

1K

INTERFACE

Q102

1

1

Q103

R116

56

C116

100/16

C114
330P

C119

0.033
(ML)

C117

100/16

R117

56

IC601

R411

1K

GND

3

3

C115

R138

15K

CCB

LC75341

R137

15K

C118

0.033

R118
100K

330P

R125

+

–
+

–

+

–

+

–

+

––

AUX

AUDIO PROCESSOR

DECK

TUN

CD

C413
1/50

C108

100/16

12K

R126

C146

0.001

R124

R122

2.7K
C122

1/50

C120

(ML)

560P

R120

3.9K

192021222324

IC1

AN7

3.9K

100K

R121

R119

C121
560P

C137

0.022

C123

1/50

R123

2.7K

12K

C147

0.001

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 33.

1

23456

Figure 16 SCHEMATIC DIAGRAM (1/10)

– 16 –

CD-BK133W

1

U

MAIN PWB-A (1/3)

R389

100

CLK

24

23

VDD

+

–

CCB

+

INTERFACE

UX

ECK

N

D

102
104 M

1

103
104 M
CHING

R116

C116

100/16

C114
330P

12

P

–

IC601

LC75341

AUX

AUDIO PROCESSOR

DECK

TUN

CD

R411

1K

C413

1/50

GND

C108

100/16

3

3

R137

15K

12K

C146

R124

R122

56

2.7K

C118

0.033

C120

(ML)

560P

R118

R120

100K

3.9K

C122

1/50

AN7345K

23456789

13

P

C117

100/16

C119

0.033
(ML)

R117

56

R138

C115

15K

330P

R125

12K

R119

100K

C121
560P

C123

1/50

R123

2.7K

R121

C147

0.001

3.9K

+

–

+

–

RSELO

+

–

R432

R126

0.001

IC101

C137

R129

VREF

RTRE

2.7K

0.022

3.3K

ROUT

RBASS

RIN

68K

R130

R128

R127

C139

R4

R3

R2

R1

3.3K

6.8K

6.8K

3.3/50

22

21

20

19

18

17

16

15

14

13

KCD-R

R132

C126

C129

R131

C606
22/50

C612

0.1(ML)

C618
1/50

C630

1/50

C624

1/50
C626

1/50
C628

1/50

MUTING

2SC3331 S

1K

100

R134

270P

C128

1K

270P

C127

C421

R142
220K

Q110

C130

C134

22/50

22/50

1/50

0.022

R133

C131

0.0027(ML)

R140

10K

10K

R136

47/50

10 11 12

C135

47/50

100

0.022

10K

R135

C608

10/50

C610

0.1(ML)
C614

C132

0.0033

RIPPLE

C133

C619
220P

R157

C136

0.0033

R618

100

REC_R

R141

10K

22/50

1314151617181920212223

VCC

GNDALC

R616

3.9K

3.3K

REC_L

R143
220K

MUTING

Q111

2SC3331 S

C138

220/10

R139

220

+B

C145

0.001

+B

A_10V

A_10V

+B

+B

A_10V

+B

C109

0.001

L103

100µH

R146

82

R147

47K

R148

22K

C148

0.047

C150
10/50

A_10V

Q112

KTA1266 GR

SWITCHING

C140

0.0082(P.P.)

C141

0.039(ML)

R144

47K

R145

4.7K

BIAS OSC

Q114

KTC3203 Y

C603

4.7/50

1

BIAS

2 3

Q113

KRC104 M

R149

4.7
C142

47/50

L104

330µH

R625

22K

+B

A_10V

VF1

–VP

VF2

+B

M_10V

GND(D_GND)

+B

UN_SW_5V

POWER

A_10V

CLK

TUN_R

TUN_L

DO

GND(D_GND)

GND(A_GND)

CLK

T_BIAS

T_T1/T2

REC/PLAY

M_GND

M_10V

SMUTE

VF1

–VP

VF2

UN_SW 5V

D_GND

+B

POWER

SPAN

100/10 kHz

SW601

SELECTOR

GND(M_GND)

CE

DI

CNP701

CE

DO

DI

SPAN

20

21

22

23

24

25

26

27

28

10

11

12

13

14

15

16

17

18

19

SW OUT

50/9 kHz

P19 11,12 - H

1

2

3

4

5

6

7

8

9

20

21

21

TO TUNER SECTION

1

SOK2

FFC701

P23 12 - C

TO DISPLAY PWB

1 3 4 5 6 9 2

7

8 9 10 11 12

P20 1 - G

TO POWER SECTION

11 12

Figure 17 SCHEMATIC DIAGRAM (2/10)

– 17 –