Sharp CDC-821-W Service manual

CD-C811W/821W

SERVICE MANUAL

No. S6938CDC811W/

Illustration: CD-C811W

Illustration: CD-C821W

0.8

1

CD-C811W CD-C821W

CD-C811W mini component system consisting of CD-C811W (Main unit), CP-C811W (Front speaker).

CD-C821W mini component system consisting of CD-C821W (Main unit), CP-C821W (Front speaker) and GBOXS0028AWM1 (Surround speaker).

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

DIFFERENCE BETWEEN

CD-C811W AND CD-C821W

SECTION

Surround Speaker None Used

CD-C811W

CD-C821W

CONTENTS

Page

SAFETY PRECAUTION FOR SERVICE MANUAL ............................................................................................................2

VOLTAGE SELECTION..................................................................................................................................................... 2

SPECIFICATIONS ............................................................................................................................................................. 3

NAMES OF PARTS ........................................................................................................................................................... 4

OPERATION MANUAL ...................................................................................................................................................... 6

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

REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 9

ADJUSTMENT ................................................................................................................................................................. 10

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 12

TYPE OF TRANSISTOR AND LED ................................................................................................................................. 12

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

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................18

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 40

TROUBLESHOOTING ..................................................................................................................................................... 41

FUNCTION TABLE OF IC................................................................................................................................................ 45

FL SEGMENT ...................................................................................................................................................................52

PARTS GUIDE/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-C811W/821W

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 WITDOUT A COMPACT DISC IN POSITION AND THE

PICK-UP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT LOOK INTO THE PICK-UP LENS.

2-THE LASER POWER OUTPUT OF THE PICK-UP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY

PRE-SET BEFORE SHIPMENT.

DO NOT ATTEMPT TO RE-ADJUST THE LASER PICK-UP UNIT DURING REPLACEMENT OR SERVICING. 3-UNDER NO CIRCUMSTANCES STARE INTO THE PICK-UP 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.

CAUTION

Laser Diode Properties Material: GaAIAs Wavelen gth: 780 nm Emission Duration: continuous Laser Output: max. 0.6 mW

● This Mini Component System is classified as a CLASS

1 LASER product.

● The CLASS 1 LASER PRODUCT label is located on the

rear cover.

● Use of controls, adjustments or performance of proce-

dures other than those specified herein may result in hazardous radiation exposure.

As the laser beam used in this compact disc player is harmful to the eyes, do not attempt to disassemble the cabinet. Refer servicing to qualified personnel only.

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.

VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen. VARNING! Osynlig laserstralning när denna del är öppnad och spärren är urkopplad. Betrakta ej strälen.

VOLTAGE SELECTION

The voltage selector is located on the AC voltage selector box. If adjustment is necessary, use a screwdriver in order to turn the selector in either direction until the correct voltage figure is displayed in the window next to the adjustment screw.

QACCB0008AW00

QACCE0011AW00

92LCORDZ1652A

QACCL0002AW00

QACCZ0008AW00

92LCORD577B

92LPLUG027

92LPLUG155A

Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

– 2 –

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

CD-C811W/821W

SPECIFICATIONS

● General (CD-C811W)

Power source: AC 110/127/220/230-240 V,

50/60 Hz

Power consumption: 40 W

Dimensions: Width; 270 mm (10-5/8")

Height; 300 mm (11-13/16") Depth; 353 mm (13-7/8")

Weight: 5.1 kg (11.2 lbs)

● General (CDC821W)

Power source: AC 110/127/220/230-240 V,

50/60 Hz

Power consumption: 47 W Dimensions: Width; 270 mm (10-5/8")

Height; 300 mm (11-13/16") Depth; 353 mm (13-7/8")

Weight: 5.5 kg (12.1 lbs.)

● Amplifier section (CD-C811W)

Output power: MPO; 33 W (16.5 W + 16.5 W)

(10 % T.H.D.) RMS; 20 W (10 W + 10 W) (10 % T.H.D.) RMS; 16 W (8 W + 8 W) (0.9 % T.H.D.)

Output terminals: Speakers; 8 ohms

Headphones; 16-50 ohms (recommended; 32 ohms)

● Cassette deck section

Type: Compact cassette tape Frequency response: 50-14,000 Hz (Normal tape) Motor: DC motor with electronic governor × 1 Signal/noise ratio: 55 dB (TAPE 1, playback)

Bias and erasure system: AC Tape speed: 4.76 cm/sec. (1-7/8 ips.) Wow and flutter: 0.15 % (WRMS) Heads: TAPE-1: Playback × 1

50 dB (TAPE 2, recording/playback)

TAPE-2: Record/playback × 1 Erase × 1

CP-C811W

● Front speaker section

Type: Maximum input power: Rated input power: Impedance: Dimensions:

Weight:

10 cm (4") full range speaker 20 W

10 W 8 ohms Width; 180 mm (7-1/8")

Height; 300 mm (11-13/16") Depth; 204 mm (8-1/16")

2.0 kg (4.4 lbs)/each

CP-C821W

● Amplifier section (CDC821W)

Output power: MPO; 60 W (30 W + 30 W)

(10 % T.H.D.) RMS; 40 W (20 W + 20 W) (10 % T.H.D.) RMS; 28 W (14 W + 14 W) (0.9 % T.H.D.)

Output terminals: Front speakers; 5.4 ohms

Surround speakers; 16 ohms Headphones; 16-50 ohms (recommended; 32 ohms)

● Compact disc player section

Type: 3-disc multi-play compact

disc player

Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

D/A converter: 1-bit D/A converter

Frequency

response: 20 - 20,000 Hz

Dynamic range: 90 dB (1 kHz)

● Tuner section

Frequency range: FM; 88-108 MHz

AM; 531 - 1,602 kHz

● Front speaker section

Type: 2-way type [13 cm (5-1/4") woofer

and super tweeter]

Maximum input power: 30 W Rated input power: 15 W Impedance: 5.4 ohms Dimensions: Width; 180 mm (7-1/8")

Height; 300 mm (11-13/16") Depth; 215 mm (8-7/16")

Weight: 2.0 kg (4.4 lbs.)/each

GBOXS0028AWM1

● Surround speaker section

Type: 8 cm (3-1/4") full-range speaker Maximum input power: 10 W Rated input power: 5 W Impedance: 16 ohms Dimensions: Width; 170 mm (6-3/4")

Height; 170 mm (6-3/4") Depth; 88 mm (3-1/2")

Weight: 0.6 kg (1.2 lbs.)/each

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

– 3 –

CD-C811W/821W

■ Front panel

11.

Disc Tray

12.

Disc Skip Button

13.

Open/Close Button

14.

(CD) Disc Number Indicators

15.

(TAPE 2) Record Indicator

16.

Sleep Indicator

17.

Extra Bass Indicator

18.

(CD/TUNER) Memory Indicator

19.

Timer Play Indicator

10.

FM Stereo Mode Indicator

11.

Timer Record Indicator

12.

(CD) Play Indicator

13.

(CD) Repeat Indicator

14.

(CD) Pause Indicator

15.

FM Stereo Indicator

NAMES OF PARTS

Illustration: CD-C821W

4

12 13

1

5

67

9

8

10

2

11

3

15

16.

Timer Set Indicator

17.

(CD) Track Down/Review Button

3

(TUNER) Preset Down Button

3

(TAPE 2) Rewind Button

18.

(CD) Track Up/Cue Button

3

(TUNER) Preset Up Button

3

(TAPE 2) Fast Forward Button

19.

Timer/Sleep Button

20.

Clock Button

21.

On/Stand-by Button

22.

Extra Bass/Demo Mode Button

23.

Function Selector Buttons

24.

(TAPE 2) Record Pause Button

25.

Memory/Set Button

26.

(CD/TAPE) Stop Button

27.

(TAPE) Play Button

3

(CD) Play/Repeat Button

28.

Tuning and Time Up/Down Buttons

29.

Volume Up/Down Buttons

30.

Headphone Socket

19 20

21

16

23

24

31

14

25

17

26

27

18

28

29

32

22

30

31.

(TAPE 1) Cassette Compartment

32.

(TAPE 2) Cassette Compartment

– 4 –

CD-C811W/821W

■ Rear panel

11.

AC Power Input Socket

12.

AC Voltage Selector

13.

Front Speaker Terminals

14.

Surround Speaker Terminals (CD-C821W Only)

15.

Span Selector Switch

16.

FM 75 Ohms Aerial Terminal

17.

Aerial Earth Terminal

18.

AM Loop Aerial Terminal

CP-C811W/821W

■ Front speaker

11.

Super Tweeter

12.

Woofer

13.

Bass Reflex Ducts

14.

Speaker Wire

GBOXS0028AWM1

■ Surround speaker (CD-C821W Only)

15.

Full-Range Speaker

16.

Speaker Wire

Illustration: CD-C821W

1

2

1 2

3

4 5

6 7

8

5

CD-C811W/821W

■ Remote control

11.

Remote Control Transmitter LED

● CD control section

12.

Disc Number Select Buttons

13.

Memory Button

14.

Pause Button

15.

Clear Button

16.

Track Down/Review Button

17.

Track Up/Cue Button

18.

Disc Skip Button

19.

Play/Repeat Button

10.

Stop Button

11.

Random Button

● Tuner control section

12.

Preset Up/Down Buttons

● Tape control section

13.

(TAPE 1) Play Button

14.

(TAPE 2) Record Pause Button

15.

(TAPE 1/2) Stop Button

16.

(TAPE 2) Play Button

17.

(TAPE 2) Rewind Button

18.

(TAPE 2) Fast Forward Button

● Common section

19.

Function Selector Buttons

20.

On/Stand-by Button

21.

Extra Bass Button

22.

Volume Up/Down Buttons

3

4

1

2 3

4 5

6

7

1314 1617 18

15

19

20

21

6

8

9 10 11

12

22

– 5 –

CD-C811W/821W

TUNING/

TIME

( )

MEMORY/

SET

CLOCK

ON/

STAND-BY

SETTING THE CLOCK

1

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

2

Press the CLOCK button.

3

Within 5 seconds, press the MEMORY/SET button.

4

Press the TUNING/TIME ( or ) button to select the time

display mode.

"0:00" → The 24-ho ur display wi ll appear.

(0:00 - 23:59)

"AM 12:00" → The 12-hour display will appear.

(AM or PM 12:00 - 11:59)

"AM 0:00 " → The 12-hour display will ap pear.

(AM or PM 0:00 - 11:59)

● Note that this can only be set when the unit is first installed

or it has been reset (see page 20).

5

Press the MEMORY/SET button.

6

Press the TUNING/TIME ( or ) button to adjust the hour.

● 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 auto-

matically to "PM".

7

Press the MEMORY/SET button.

8

Press the TUNING/TIME ( or ) button to adjust the

minutes.

● 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 setting will not advance even if minutes advance from

"59" to "00".

9

Press the MEMORY/SET button.

● The clock starts operating from "0" seconds.

(Seconds are not displayed.)

To see the time display:

Press the CLOCK button.

● The time display will appear for about 5 seconds.

Note:

● The clock display will flash on and off at the push of the CLOCK

button when the AC power supply is restored after a power

failure occurs or after the AC power lead is disconnected.

If this happens, follow the procedure below to change the clock

time.

To change the clock time:

①

Press the CLOCK button.

②

Within 5 seconds, press the MEMORY/SET button.

③

Perform steps 6 - 9 above.

To change the time display mode:

①

Perform steps 1 - 2 in the section "RESETTING THE MICRO-

COMPUTER", on page 20.

②

Perform steps 1 - 9 above.

(Main unit operation)

In this example, the clock is set for the

24-hour (0:00) system.

AM 0:00AM 12:000:00

2

3

4

7

6

5

8

9

15

PREPARATION FOR USE

■

Remote control

Notes concerning use:

● Replace the batteries if the operating distance is reduced or if

the operation becomes erratic.

● Periodically clean the transmitter LED on the remote control

and the sensor on the main unit with a soft cloth.

● Exposing the sensor on the main unit to strong light may in-

terfere with operation. Change the lighting or the direction of

the unit.

● Keep the remote control away from moisture, excessive heat,

shock, and vibrations.

0.2 m - 6 m

(8" - 20')

■

AM/FM interval (span)

The International Telecommunication Union (ITU) has established

that member countries should maintain either a 10 kHz or a 9

kHz interval between broadcasting frequencies of any AM station.

The illustration shows the 9 kHz interval zones (regions 1 and

3), and the 10 kHz interval zone (region 2).

Before using the unit, set the SPAN SELECTOR switch (on the

rear panel) to AM tuning 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 to "50/9" for 9 kHz AM

interval (50 kHz FM interval), and "100/10" for 10 kHz AM

interval (100 kHz FM interval).

3

Whilst pressing down the button and the

button, hold down the ON/STAND-BY button for at least 1

second.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

2

1,2

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following conditions:

● To erase all of the stored memory contents (clock and timer

settings, and tuner and CD presets).

● If the display is not correct.

● If the operation is not correct.

1

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

2

Whilst pressing down the button and the

button, hold down the ON/STAND-BY button for at least 1

second.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

OPERATION MANUAL

– 6 –

Back Board

CD Tray Cover

CD Player Unit

(C1) x3

(D1) x5 ø3x8mm

(C1) x1

(C2) x2

1

2

Pull

(C1) x1

CD Servo PWB

Disc Tray

Front Panel

Top Cabinet

Front Panel

(A1)x2 ø3 x12mm

(A1)x2 ø3x12mm

(B2)x1

Side Panel (Left)

Side Panel (Right)

(B1)x1 ø3x10mm

(B1)x4 ø3x12mm

Back Board

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-C811W/821W

STEP

Note 1:

How to open the change manually.

1. Then, turn fully the lock lever in the arrow direction through

REMOVAL

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

2 Side Panel 1. Screw ..................... (B1) x6 7-1

(Left/Right) 2. Hook ....................... (B2) x2

3 CD Play Unit/ 1. Turn on the power supply, 7-2

CD Player Unit open the disc tray, take out

(Note 1)

2. Hook ...................... (C1) x5

3. Socket ................... (C2) x2

4 Back Board 1. Screw .................... (D1) x5

5 Main PWB 1. Screw ..................... (E1) x3 8-1

6 Tuner PWB 1. Screw ..................... (F1) x2 8-1

7 Front Panel 1. Screw .................... (G1) x2 8-1

8 Headphones 1. Screw .................... (H1) x1 8-2

PWB 2. Guide ......................(H2) x1

9 Display PWB/ 1. Screw ..................... (J1) x8 8-2

Switch PWB 2. Hook ....................... (J2) x7

10 Tape Mechanism 1. Open the cassette holder. 8-2

11 Turntable 1. Screw ..................... (L1) x1 8-3

12 Disc Tray 1. Screw .................... (M1) x2 8-3

13 CD Servo PWB 1. Screw .................... (N1) x1 8-4

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

14 CD Changer 1. Screw ..................... (P1) x4 8-5

Mechanism

15 CD Mechanism

the hole on the loading chassis bottom in this state.

2. Socket .................... (E2) x5

3. Flat wire.................. (E3) x3

3. Socket .................... (J3) x1

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

2. Guide ...................... (L2) x1

2. Guide ..................... (M2) x2

1.

PROCEDURE

the CD tray cover, and close.

Screw ..................... (Q1) x1 8-5

After that, push forward the CD player base. (Fig. 7-3)

Note 2:

1. After disconnecting the optical pickup connector, wrap the front end of connector in conductive aluminum foil to prevent damage to the optical pickup by static electricity.

CD-C811W/821W

DISASSEMBLY

CD-C811W/821W

FIGURE

Figure 7-1

7-2

Figure 7-2

LOCK LEVER

Figure 7-3

– 7 –

CD-C811W/821W

(N1) x1 ø3x10mm

(N2) x2

CD Player Unit

CD Servo PWB

(E1)x3 ø3x8mm

Front Panel

Main PWB

(J1)x2 ø3x10mm

(J1)x6 ø3x10mm

Headphones PWB

(H1)x1 ø3x10mm

(E2)x1

Tuner PWB

(H2)x1

(E3)x1

Switch PWB

(E2)x3

Figure 8-1

(G1)x2 ø3x8mm

(J3)x1

Main PWB

(E3)x2

(F1)x2 ø3x8mm

Front Panel

Tape Mechanism PWB

(E2)x1

Tuner PWB

(J2)x7

Display PWB

Support PWB

Open

Figure 8-4

(P1) x4

ø3x12mm (Q1) x1 ø2.6x10mm

Shift Lever

CD Changer Mechanism

(M1) x1 ø3x10mm

(M2) x1

CD Player Unit

(L2) x1

Figure 8-2

(K1)x6

Tape Mechanism

ø3x10mm

(L1) x1 ø3x10mm

Washer

Turntable

Disc Tray

(M1) x1 ø3x10mm

(M2) x1

Cassette Holder

CD Player Base

CD Mechanism

Be careful when installing the CD changer mechanism. Install the CD changer mechanism on the CD player base after the shift lever has been set in the highest position.

Figure 8-5

Figure 8-3

– 8 –

CD-C811W/821W

CP-C811W

STEP REMOVAL

1 Speaker 1. Net Frame............... (A1) x1 9-1

(A1)x1 Net Frame

2. Duct Panel ..............(A2) x1

3. Screw...................... (A3) x4

Woofer

(A3)x4

ø3x8mm

PROCEDURE

Speaker Box

(A2)x1 Duct Panle

FIGURE

CP-C821W

STEP REMOVAL

1 Speaker 1. Net Frame............... (B1) x1 9-2

(B1)x1 Net Frame

2. Duct Panel .............. (B2) x1

3. Screw...................... (B3) x4

Super Tweeter

PROCEDURE

Speaker Box

Woofer

(B3)x4

ø3x8mm

(B2)x1 Duct Panle

FIGURE

Figure 9-1

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION

Perform steps 1, 2, 3, and 11 ~15 of the disassembly method to remove the CD mechanism.

How to remove the turntable up/loading/down motor (See Fig. 9-3)

1. Remove the screws (A1) x 2 pcs., to remove the turntable up/down/loading motor.

How to remove the pickup (See Fig. 9-4)

1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2) x 1 pc.

2. Remove the stop washer (B3) x 1 pc., to remove the gear (B4) x 1 pc.

3. Remove the pickup.

Turntable/Up/ Loading/Down Motor

Motor PWB

(B1) x2 ø2.6x6mm

Figure 9-2

(A1) x2 ø2.6x5mm

Figure 9-3

Stop Washer (B3)x1

Pickup

Note: After disconnecting the optical pickup connector, wrap the front end of connector in conductive aluminum foil to prevent damage to the optical pickup by static electricity.

– 9 –

Shaft (B2) x1

CD Mechanism Gear (B4) x1

Figure 9-4

CD-C811W/821W

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

Play: TW-2412 Tape 1: Over 80 g

• Torque Check

Torque Meter

Tape 1

Play: TW-2111 30 to 60 g. cm 30 to 60 g.cm Fast forward: TW-2231 — 60 to 120 g.cm Rewind: TW-2231 — 60 to 120 g.cm

• Tape Speed

Test Tape

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

Adjusting

Point

motor (Load (MM1) resistance:

TAPE MECHANISM

Specified Value

Tape 2: Over 80 g

Specified Value

Specified

Value

MM 1 Motor

Tape 2

Instrument

Connection

8 ohms)

TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

IF 450 kHz 1,602 kHz T351 *1 AM Band — 531 kHz (fL): T306 *2

Coverage 1.1 ± 0.1 V AM 990 kHz 990 kHz (fH): T302 *1

Tracking

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

• FM Notes:

1: Description of the "FM IF Adjustment" is not carried on this

Manual. It is because the IF coil in the FM front end section has been best adjusted in the factory so that its further adjustment is not needed at the field. When replacing the FM front end assembly, no adjustment is needed either.

2: The parts in the FM front end section are prepared in a

complete unit, so you can't obtain each part individually

• FM Mute Level

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

Frequency

98.00 MHz 98.00 MHz VR351 Input: Antenna (25 dBµV) Output: Speaker

Frequency

Display

Frequency

Display

Adjusting

Parts

Setting/

Adjusting

Parts

Connection

Terminal

Instrument

Connection

Instrument

Variable resistor in motor

Figure 10-1 ADJUSTMENT POINTS

CNP303

TP302

IC303

R357

Figure 10-2 ADJUSTMENT POINTS

T351

AM IF

VR351

FM MUTE LEVEL

T306

AM BAND COVERAGE fL

TUNER PWB

TP301

R336

FE301

AM TRACKING fH

T302

SO301 ANTENNA TERMINAL

– 10 –

TEST MODE

1 2 3

• Setting the test mode Any one of test mode can be set by pressing several keys as follows. <REC. PAUSE> + <DISC. SKIP> + <POWER> TEST: CD operation test

• TEST mode

Function — CD test mode

Setting of TEST mode Indication of CD TST mode (Fig. 11-1) OPEN/CLOSE operation is manual operation. The pickup can be moved by using the ( ) or ( ) key.

<MEMORY> LASER ON

<MEMORY> Tracking on the spot. SERVO OFF PLAY

Tracking on the spot. SERVO ON PLAY

IL is not performed.

CD-C811W/821W

<STOP>

STOP

<PLAY> key input

Note:

TOC. IL is performed, and the ordinary PLAY is performed. If the following key is pressed during PLAY, it is possible to specify directly any Track No. <Disc Number 1> key: Track 4 <Disc Number 2> key: Track 9 <Disc Number 3> key: Track 15

Press <STOP> key.

Stop

Only in STOP state it is possible to slide the pickup with the ( ) or ( ) key. VOL. --- Last memory

BAL. --- CENTER R.GEQ. --- FLAT X-BAS --- OFF

Canceling method - POWER OFF

Figure 11-1

CD SECTION

Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary to readjust it. Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.

• Automatic adjustment item

1. Focus offset (Fig. 11-2)

2. Tracking offset (Fig. 11-3)

3. E/F balance (tracking error balance) (Fig. 11-4)

4. RF level AGC function (HF level: constant)

5. RF level automatic follow-up of the tracking gain This automatic adjustment is performed each time a disc is

changed. Therefore, each disc is played back using the optimal settings.

CD ERROR CODE DESCRIPTION

When a malfunction occurs during CD operation, an error code will be displayed to identify the function in CD operation which failed.

Error State Code 0001 Cannot detect pickup-IN SW 0101 Tray close operation error 0105 Tray close operation error 0201 Tray open operation error 0203 Tray open operation error 0304 Disc skip operation error 0305 Disc skip operation error 0307 Disc skip operation error

0.1s

0.50 V IC1 20 FE

0.1s

0.50 V IC1 7 TE

10ms

0.50 V IC1 20 FE

10ms

0.50 V IC1 7 TE

200 ms 1V/diV IC 1 15

200 ms 1V/diV IC 1 7

FOCUS OFF-SET ADJUST

TRACKING OFF-SET ADJUST

1 2

Figure 11-2

Enlarged View

TRACKING OFF-SET ADJUST

1 2

Figure 11-3

TRACKING/ ERROR BARANCE

1

TO

TE

ADJUST

2

Figure 11-4

– 11 –

CD-C811W/821W

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.

REF. NO DESCRIPTION POSITION POSITIONREF. NO DESCRIPTION

SW1 OPEN/CLOSE ON—OFF SW2 MECHA UP ON—OFF SW3 DISC NUMBER ON—OFF SW4 PICKUP IN ON—OFF SW401 SPAN SELECTOR 100/10-50/9 SW701 ON/STAND-BY ON—OFF SW702 CLOCK ON—OFF SW703 TIMER/SLEEP ON—OFF SW707 DISK SKIP ON—OFF SW708 OPEN/CLOSE ON—OFF SW709 REWIND ON—OFF SW710 REC PAUSE ON—OFF SW711 MEMORY/SET ON—OFF SW712 STOP ON—OFF SW714 TAPE ON—OFF

• 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.

SW715 CD ON—OFF SW716 FAST FORWARD ON—OFF SW717 TUNING UP ON—OFF SW718 TUNING DOWN ON—OFF SW719 PLAY ON—OFF SW720 VOLUME DOWN ON—OFF SW721 VOLUME UP ON—OFF SW722 X-BASS/DEMO ON—OFF SW902 VOLTAGE SELECTOR 110/127/220/

SWM3 FOOI PROOF ON—OFF SWM4 F.A.S. ON—OFF SWM5 CAM ON—OFF

230-240V

FRONT

VIEW

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

2SC2389 SE 2SC380 O KRC102 M KRC104 M KRC107 M KTA1266 GR KTA1271 Y KTA1273 Y KTC3199 GR KTC3203 Y

FRONT

VIEW

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

2SA1318

Figure 12 TYPES OF TRANSISTOR AND LED

– 12 –

1 2 3

SVC348S

FRONT

VIEW

SLI342UCJ1

CD-C811W/821W

+B1

+5V

X1

16.93MHz

43 41 36 23

5 6

44

45

TO MAIN PWB

(TO IC401)

2

1

3

L-CH

R-CH

+7V

40

36

37

XVDD RVDD LVDD VDD

ISET

VVDD

LCHO

RCHO

LC78622N

SERVO/SIGNAL

XOUT

XIN

CONTROL

56

4

38

LVDD

IC2

9

LVSS

EFMO

CNP11

SWITCHING

REGULATOR

Q51

27

39

RVSS

CONT4

EFMIN

CLV+

~

10

20

12

24 25

CONT2

CONT1

26

CONT3

58

53

/RES. /CQCK. COIN

SQOUT. RWC. WRQ

JP–

TO DISPLAY

PWB

M3

TURNTABLE

UP/DOWN

LOADING

SW2

MECHA UP

SW3

SW1

OPEN CLOSE

DISC NUMBER

MOTOR

M

–

+

SOLM2

SOLENOID

10

CNS10

CNP10

~

9

GND (D)

10

9

7

8

6

MECHA UP

GND (D)

DISK NO.

OPEN CLOSE

7

8

6

5

4

GND (D)M–M+

5

4

2

3

1

SOL–

SOL+

2

3

1

Q52

+4.3V

+5V

Q1

LASER DRIVER

VOLTAGE

REGULATOR

64

VCC1

62

LD0

~

32 40 4344

JP–

SLC

CV+

IC1

LA9241M

SERVO AMP.

FIN1EF

FIN2

2

3

1

4

PICKUP UNIT

SL1

CE

DAT

CL

DRF

SL+ SL–

SLD

SP

SPO

FD TO

52 51

54 31 30

29 23 27

16

15

TRACKING COIL

CL, DAT, CE

SL+. SL–. DRF

25 20 17

2

1

FOCUS COIL

53

Figure 13 BLOCK DIAGRAM (1/5)

– 13 –

M2

SLED

MOTOR

M1

SPINDLE

MOTOR

+B1

+B5

18244020

IC3

M63001FP

FOCUS/ TRACKING/ SPIN/SLIED

DRIVER

45

15

7

6

M

3839284142 37 36

27

16 26

23 35

~

29 22

21 14

~

8

PICKUP IN

PU-IN SW

SW4

CD-C811W/821W

O

T

CD-C811W

FM 75 ohms

GND

AM

SO301

ANTENNA

TERMINAL

FE301

FM FRONT END

2867 3 4

F OUT

AM RF

AM ANT

T302

OSC

T306

FM IF

1 3

1

CF301

5

VT

AM OSC

FM +B

FM IF

AMP

3

Q301

FM MUTE LEVEL

FMOSC

+B4

Q360

VOLTAGE REGULATOR

FM

VR351

+B4

FM IF

CF302

1

FM IF IN

7

AM IF

T351

12 3 4589

REG INOUT VCC

AM

OSC

FM IF DET./FM MPX./AF IF

OUT

23

22

24

FM AFC

AM OSC IN

X352

4.5MHz

2220

1

15

IC302

LC72131

PLL CONTROLLER

21

AM RF IN

INAM

FM IN

3 6

CE

13

STEREO

1116

10

4

5

DI

CL

PLL DATA BUFFR

AM IF

CF352

IC303

LA1832

67

SD

MONO/ST

DO

Q371

31

10

IF OUT

VOLTAGE REGURATER

+B4

IF IN

1213

21

GND

11

SWITCHING

+5V

17

FM IF

12

Q361

+B4

CF351

X351

456kHz

17 19

14

15

RL

MUTING

Q353 Q354

TUNER MUTE

FO

S

FROM CD PWB CNP11

TAPE 1

L-CH

R-CH

PLAYBACK HEAD

TAPE 2

L-CH R-CH

RECORD/ PLAYBACK HEAD

ERASE HEAD

REC

P.B

AC BIAS

CNS401

1 2 3 4

SWITCHING

Q501~Q509

IC501

PLAYBACK AND RECORD

R(T1)

R(T2)

POP REDUCE

L REC R REC

RIPPLE

AN7345K

/PLAYBACK AMP.

L(T1)

1

L(T2)

L NF

R NF

24

2

23

3 4

6 9

16 14 12

T1/T2 REC

NOR/ CRO2

15 19

P.B.

H/N

T1/T2

+B4

11 10

TAPE TUNER

CD

SWITCHING

+B4

13

4

PB

L

21

R

5

20

L R REC

7

18

L NF

8

17

R NF NC

10

Q514

Q515

Q516

4

L

17

R

3

L R

18

AUDIO PROCESSOR

L

2

R

19

1

20

L-CH

BIAS OSC

IC401

M62439SP

9

R-CH

SWITCHING

Q512 Q513

R

13

8

L

Figure 14 BLOCK DIAGRAM (2/5)

– 14 –

SWM3

FOOL PROOF

SWM4

F.A.S

SOLM1

SOLENOID

SWM5

CAM

M

MM1 TAPE MOTOR

Q701 Q702

MOTOR DRIVER

SOLENOID

DRIVER

1 2

FL DISPLAY

~

14 17 18 21 30

3

,,

FL701

~

,

CD-C811W/821W

31

32 33

FL SEGMENT DRIVER

Q703

ING

+B4

OR

61

56

~

7061

~

54 53 49

~

51

44 42 43

52 36

~

41 47

KEY SW901~SW703 SW707~SW722

Q631 Q632

L-CH R-CH

VOLTAGE

REGULATOR

IC903

3

KIA7812P

2

IC902

3

KIA7806P

2

IC901

2

AN78L05

3

46

34 58

1

RX701

3

2

+B7

REMOTE SENSOR

Q401 Q402

MUTING

R

13

8

L

REC

+12V(MOTOR)

+12V

+B1

+7V CD+B

+B4

+5V

+B5

VOLTAGE

REGULATOR

SYSTEM MICROCOMPUTER

2725

~

IC601

2

LA4282

5

POWER AMP.

+B

10

1

F903 T500mA L 250V

1

CONSTANT

VOLTAGE

REGULATOR

1

18

24

57

,

+B5

PHM1 RUN PALS SENSOR

3

12

D910,D911 D914,D915

D912,D913 D916,D917

VOLTAGE REGULATOR

,,,

IC701

IX0300AW

2321

30

1319

LED701

L-OUT

11

R-OUT

7

F901 T2.5A L 250V

F902 T1.6A L 250V

Q901

XL701

4.19MHz

77 79 8072

17353416 9 12

+B5

TRANSFORMER

71 7

~~~

RESET Q704

PT901

POWER

T.F

TO CD SECTION CNP12

JK601 HEADPHONES

SO901 SPEAKER TERMINALS

230-240V

220V

127V

110V

RL901 RELAY

FRONT SPEAKER

SW902 VOLTAGE SELECTOR

SO901 AC SOCKET

T1/T2

+B7

+B6

UNSWITCH

+5V

CONSTANT

VOLTAGE

REGULATOR

IC904

2

AN78L05

Q902

1

3

Figure 15 BLOCK DIAGRAM (3/5)

– 15 –

RL901(RELAY)DRIVER

D921~D924

PT902 BACK UP TRANSFORMER

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

CD-C811W/821W

O

S

CD-C821W

SO301

AM/FM ANTENNA

TERMINAL

FM 75 ohms

GND

AM

FE301

FM FRONT END

2867 3 4

F OUT

AM RF

AM ANT

T302

OSC

T306

FM IF

1 3

1

CF301

5

VT

AM OSC

FM +B

FM IF

AMP

3

Q301

FM MUTE LEVEL

FMOSC

+B4

Q360

VOLTAGE REGULATOR

FM

VR351

+B4

FM IF

CF302

1

FM IF IN

7

AM IF

T351

23 4

1589

REG INOUT VCC

AM

OSC

FM IF DET./FM MPX./AF IF

OUT

23

22

24

FM AFC

AM OSC IN

X352

4.5MHz

2220

1

15

IC302

LC72131

PLL CONTROLLER

21

AM RF IN

INAM

FM IN

3 6

CE

CF352

13

STEREO

MONO/ST

1116

10

4

5

DI

CL

AM IF

IC303

LA1832

67

SD

DO

Q371

31

10

IF OUT

IF IN

1213

21

FM IF

GND

11

SWITCHING

VOLTAGE REGURATER

+B4

+5V

17

+B4

CF351

12

Q361

X351

456kHz

17 19

14

20

15

RL

MUTING

Q353 Q354

TUNER MUTE

FO

FROM CD PWB CNP11

TAPE 1

L-CH R-CH

PLAYBACK HEAD

TAPE 2

L-CH

R-CH

RECORD/ PLAYBACK HEAD

ERASE HEAD

REC

P.B

AC BIAS

CNS401

1

2

3 4

SWITCHING

Q501~Q509

IC501

PLAYBACK AND RECORD

R(T1)

R(T2)

POP REDUCE

L REC

R REC

RIPPLE

AN7345K

/PLAYBACK AMP.

L(T1)

1

L(T2)

L NF

R NF

24

2

23

3 4

6 9

16 14 12

T1/T2

REC

NOR/ CRO2

15 19

P.B.

H/N

T1/T2

+B4

11 10

TAPE

TUNER

CD

TAPE MUTING SPARE

Q510 Q511

SWITCHING

+B4

13

4

PB

L

21

R

5

20

L R REC

7

18

L NF

8

17

R NF NC

10

Q514 Q515 Q516

4

L

17

R

3

L

R

18

AUDIO PROCESSOR

L

2

R

19

1

20

L-CH

BIAS OSC

IC401

M62439SP

9

R-CH

SWITCHING

Q512 Q513

R

13

8

L

Figure 16 BLOCK DIAGRAM (4/5)

– 16 –

SWM3

FOOL PROOF

SWM4

F.A.S

SOLM1

SOLENOID

SWM5

CAM

MM1 TAPE MOTOR

M

SOLENOID

DRIVER

Q702 Q703

MOTOR DRIVER

1 2

FL DISPLAY

~

30

3

FL701

CD-C811W/821W

31

32 33

FL SEGMENT DRIVER

Q705

B4

OR

G

1011129 654317

+B5

79

15

RESET Q704

PT901

POWER

TRANSFORMER

~

IX0309AW

212223

20

+B5

PHM1 RUN PALS SENSOR

D910,D911 D914,D915

D912,D913 D916,D917

VOLTAGE REGULATOR

7869

IC701

19

1843

LED701

L-OUT

2

5

R-OUT

F901 T3.15A L 250V

F902 T1.6A L 250V

Q901

8980~ 9992 ~

XL701

4.19MHz

49

~

47 45 42 54 52 53

46 42 41 39

29

KEY SW701~SW704, SW706, SW707, SW710~SW720, SW722~SW728

L-CH

R-CH

VOLTAGE

REGULATOR

IC903

3

KIA7812P

2

IC902

3

KIA7806P

2

IC901

2

AN78L05

3

38 37 36

34

3331

~

IC601

13

LA4451

9

POWER AMP.

+B

1

F903 T500mA L 250V

1

CONSTANT

VOLTAGE

REGULATOR 1

1

RX701

3

2

+B7

REMOTE SENSOR

Q401 Q402

MUTING

+12V(MOTOR)

R

13

8

L

REC

+B1

+B4

+B5

+12V

VOLTAGE

REGULATOR

+7V CD+B

+5V

58

SYSTEM MICROCOMPUTER

24

30

51

12

7

T.F

100

JK601 HEADPHONES

SO901 SPEAKER TERMINALS

230-240V

220V

127V

110V

TO CD SECTION CNP12

SURROUND SPEAKER

FRONT SPEAKER

RL901 RELAY

SW902 VOLTAGE SELECTOR

SO901 AC SOCKET

T1/T2

+B7

+B6

UNSWITCH

+5V

CONSTANT

VOLTAGE

REGULATOR

IC904

2

AN78L05

Q902

1

3

Figure 17 BLOCK DIAGRAM (5/5)

– 17 –

D921~D924

PT902 BACK UP TRANSFORMER

AC POWER SUPPLY CORD

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

CD-C811W/821W

C709

10K

7 2

SW 5V

CD-C811W

A

F

P15

P16

P13

P20

P14

P11

P10 P9P8P7P6

4 3 2 1

5

10

8

9

6

7

B

C

D

E

+B

R739 10K

12V

Q702

KTA1271 Y

12V

R800 10 (1/2W)

+B

R740

10K

SOLENOID DRIVER

F

TAPE MECHANISM PWB-E

FWM1

FWM2

+

4

1 2 2

1

CNPM2

2 1

PHM1 PHOTE INTERRUPTER

3

M

MM1

G

TAPE MOTOR

SWM3 FOOL PROOF

SWM4 F.A.S

SOLM1 SOLENOID

SWM5 CAM

MOTOR

T2 RUNPALS

FOOL PROOF

T1 RUNPALS

SOLENOID

MECHA STOP

FL701 FL DISPLAY

5G

14

1312

D701

DS1SS133 0V

1 2 3 4

+B

5

6

7 8

9

10 11

15

C703

1/50

C704

1/50

CNS702

CNPM1

1 2 3 4 5 6 7 8 9

10 11 1212

11

Q701 KTA1273 Y MOTOR DRIVER

12V

P5

P4

6G

7G

16

18

17

NC

R792

C705 47/16

MOTOR

GND

+B T2 RUNPALS

FOOL PROOF T1 RUNPALS

SOLENOID MECHA STOP

C707

220/6.3

C706

-25V

3

R791

1K

-25V R741

100K

-24.8V

4G

3G

2G

6

5

4 3 2 1

T1

T2

T3

80

T7

65

S11

0V

4.9V

DIST0

S15

SPN_P

59

61

60

P15

R701 1K

10K

R742

1.2K

R743 4 3 2 1

+B

M_GND

A/D T2 RUN

0.022

4.7V

-24.8V R704 1K

9G

4.7V

10

8

9

7

T0

DO

VDD

IX0300AW

4.7V

0V

S MUTE

AC RLY CONT

POWER

56

57

58

R702 1K

R775 1K

R703 1K

C773

0.0047

BI702

MOTOR

0V0V0V0V0V

R705 1K

R706 1K

R708 1K

11

DI

CE

CLK

1.6V

R711 1K

R710 1K

1312

14

CD RWC

CD WRQ

IC701

0V

5V

T1FAS

FPA

52

54 53

R707 1K

R709 1K

10K

R746

+B

4.7V

T.MOTOR

VDD

51

R712 2.2K

R714

2.2K

10K

+B

4.7V

OPEN

55

R745

4.6V

R713 1K

R717 1K

R715 1K

16

15

17

CD COIN

CD PCCL

25 26 27 28

0V

12V

CAM SW

T.SOL

49

50

48

R716 1K

10K

R747

1.9V

R718 1K

3.9V

0.5V

20

18

19

AVSS

RESET

CD SQOUT

TIMER LED

A/D KEYIN 1 A/D KEYIN 2 A/D KEYIN 3 A/D DIST

4.9V

5.2V

1.6V

0V

TAMUTE

REMOCON

SYSTEM STOP

IC

46

47

45

NC

R723

R721 1K

1K

R725

R719

1K

R772

SPN_P

VF2

S_MUTE

1

4.6V

1.6V

R726 1K

R722 1K

R724 1K

23

22

21

CD CQCK

CD DSP RES

OPEN

2.4V

0V

T_BIAS

T T1T2

42

43

44

1K

R727

R748

3.3(1/2W)

VF1

-VP

4.2V

R728 1K

24

25 26

CD FRF

27 28

A/D T2 RUN

29 30 31 32 33

VSS

34 35

5V

36

4.6V

37 38 39

40

CD U/D SW

REC/PLAY

41

R729

R749

10K

C7

0.0

M_+12V

D_GND

UN_SW_+5V

1K

8GP1P12

P19

P18

23

2.2/50

24

P17 1G2G3G4G9GF

26

25

28

27

-24.8V 6G

5G

-24.8V

-24.8V P17

-27.8V

P18

-18.2V

P19

-21.2V

P12

-21.2V

P1

-18V

P6

VLOAD

-28V

-18V

P7

-27.8V

P8

-27.8V

P9

-27.8V

P10

-21.3V

P11

-21.3V

P14

-28V

-21.2V

+B

29

80 79 78

77

76 75 74 73 72 71 70 69 68 67 66 65

P20

P3

P2

19

20

22

21

NC

C774

100/10

33

C775

F

31

30

33

32

Q703

KRC107 M

FL SEGMENT

DRIVER

4.8V 2

1

-22V

-24.8V

1G

8G

7G

T4

T5

T6

T8 LCK S0

S1 S2 S3 S4 S5

SYSTEM MICROCOMPUTER

S6 S7 S8 S9 S10

S12

S13

S14

63 62

64

P13

P16

-28V

8

6

5

7

FPA

T1FAS

CAM SW

SOLENOIDO

TO MAIN PWB

P23 12-F

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 12.

1

23456

Figure 18 SCHEMATIC DIAGRAM (1/15)

– 18 –

CD-C811W/821W

1K

R722

1K

4

6V

.

4.6V

R724 1K

22

21

CD CQCK

CD DSP RES

N 1 N 2 N 3

2.4V

0V

T_BIAS

T T1T2

43

44

725

K

3.3(1/2W)

4.2V

1.6V

R726 1K

R728 1K

24

23

25 26

CD FRF

27 28

A/D T2 RUN

29 30 31

OPEN

32 33

VSS

34 35

5V

36

4.6V

37 38 39

40

CD U/D SW

REC/PLAY

42

41

1K

R729

R727

R748

10K

C772

0.022

C709

0.022

R752

R753

10K

R735 1K R736 1K R737 1K R738 1K

4.7V

AVDD

4.9V

AVREF

1.8V XL701

4.6V

4.19MHz

2.1V

CD SLM +

CD SLM – CD PUIN SW CD O/C SW CD DISC NO SW

5V

1K

R750 10K

R749

10K

C708

0.001

+B

10K

R755

10K

R754 10K

R756

4.9V

1.2V

0V

2.3V

0V 0V

5V 5V

+B

R751 10K

R758

1.8K

3.3K

LED701

SLI342UCJ1

R757 10K

4.9V

C701 15P (CH)

R730 1K R731 1K R732 1K R733 1K R734 1K

+B

TIMER

+B

C702 18P(CH)

+B

SWITCH PWB-A4

R762

R761

820

SW701 SW702

ON/ STANDBY

R760

3.3K

FORWARD

+B

L701

100µH

R782

D702

DS1SS133

4.6V

C770

0.01

C710

REWIND

0.1/50

R778

1.2K

8.2K

SW703

TIMER/

CLOCK

SLEEP

R765

R763

1.2K

820

SW709 SW710 SW711 SW712

RECORD

/PAUSE

R764

R766

820

1.2K

SW716 SW717 SW718

TUNING

FAST

UP

R793 270K

Q704

47K

KRC102 M

RESET

2 3

0V

1

D703

DS1SS133

R767

1.5K

MEMORY

/SET

R768

1.5K

TUNING

DOWN

C712

3.3/50

R783

100K

FW705

1

3

R770

1.8K

STOP

R771

1.8K

SW719 SW720 SW721 SW722

PLAY

R785

4.7K

4.8V 3

IC702

2

0V

C713

0.022

1

3

R773

2.2K

SW713

TUNER

/BAND

R774

2.2K

VOLUME

DOWN

4.8V

1

IC702

RESET

KIA7042P

R780

3.9K

SW707

DISC SKIP

R776

3.3K

SW714 SW715 TAPE

R777

3.3K

VOLUME

UP

DS1SS133

RX701 REMOTE SENSOR

1

2 3

C714

CD

X-BASS

/DEMO

DS1SS133

D704

R786

100

0.022 C715

47/25

SW708 OPEN/

CLOSE

D705

+B

VF1

-VP

N PWB 12-F

M_+12V

D_GND

D708 DS1SS133

D707

DS1SS133

M_GND

SW_+5V

UN_SW_+5V

10

FW703

7

AC_RLY_CONT

POWER

T_T1T2

T_BIAS

REC/PLAYDICE

9

TO MAIN PWB

P23 12-E

DO

CLK

1

FW701

15

PCCL

14

U/D SW

11

10

1213

11

10

1213

SLM–

O/C SW

PUIN SW

DISC NO SW

9

SLM+

8

7

8

7

D_GND

6

FRF

4 3 2 1

5

4 3 2 1

5

CQCK

SQOUT

DSP RES

COIN

WRQ

RWC

BI701

CNS701

DISPLAY PWB-A1

CNP12 TO CD SERVO PWB

P31 7-H

8 9 10 11 12

Figure 19 SCHEMATIC DIAGRAM (2/15)

– 19 –

CD-C811W/821W

D

4

9 S

9

CD-C811W

A

B

C

D

L_IN

12

A_GND

13

R_IN

14

A_+12V

15

M_GND

16

CD_+B

P22 1-D

10

CD_GND

E

F

G

18

TO MAIN SECTION

SW_+5V

26

–15V

19

M_+12V

20

VF1

21

–VP

22

VF2

23

UN_SW_+5V

24

D_GND

P23 12-G

25

POWER

18

TO MAIN SECTION

AC_RLY_CONT

17

-B

+B

FM SIGNAL

+B

C601 10/16

+B

CONSTANT VOLTAGE

+B

C901

47/16

+B

R601

560

R603

R602

560

Q631 KRC102 M

4.3V

R604 33K

3

C602

10/16

IC901

REGULATOR

6.2V

IC901

2

AN78L05

3

1.2V

C902

0.022(ML)

+B

C903 47/25

IC601

LA4282

POWER AMP.

C631

0.022 (ML)

C603

33K

1

0V

2

3

0V 0V

KRC102 M

R631

22K

12V 1

D901 DS1SS133

D902 DS1SS133

0V RIPPLE_FILTER

0V +IN_A

0V –IN_A

4 3 2 1

1K

R607

120

R605

C632

47/25

470P

C604 470P

1

0V

Q632

C904

0.047(ML)

2

18.4V

R901

100/25

C605

R632 820

10K

C607

0.082(ML)

+B

VOLTAGE REGULATOR

+B

C906

0.022(ML) C907

100/16

VOLTAGE REGULATOR

IC902

3 1

KIA7806P

7.3V 2

1.3V D903

C905

0.047(ML)

DS1SS133 D904

DS1SS133

+B

0V OUT_B

0V –IN_B

0V +IN_B

0V GND_PRE

8

6

5

7

C610

470/25

R608

120

1K

R606

C608

100/25

C606

0.082(ML)

R610

270

(1/2W)

C633 220P

IC903

3

KIA7812P

12V

2

C908

0.1 (ML)

T500mA L 250V

23.2V

0V GND_POWER

0V +VCC

0V GND_POWER

0V MUTE

0V OUT_A

11

10

12

9

C609 470/25

56K

R633

C634

0.022 (ML)

C612

0.1 (ML)

C614

0.1 R612

4.7

C635 10/50

1

23.2V

0V

F903

C909

0.1 (ML)

R609

270(1/2W)

C910

0.1 (ML)

C911

-B

KRC107 M

RL901(RELAY)DRIVER

3

4.3V 1

C611

0.1 (ML)

C613

0.1 (ML)

R611

4.7

C912

2200/50

3300/25

1N4004S

C913

1000/25

Q902

0.7V 2

0V

+B

D918 DS1SS133

D905

D91 DS1

1N

POWER PWB-A2

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 12.

1

23456

Figure 20 SCHEMATIC DIAGRAM (3/15)

– 20 –

C

100

C636

0.001

D631 DS1SS133 D632 DS1SS133

CD-C811W/821W

HEADPHONES PWB-A3

FW601

1

JK601 HEADPHONES

C912

00/50

D905

N4004S

IVER

B

8

1SS133

D906

1N4004S

C914

100/25

220(1/2W)

D919 DS1SS133

C925

1000/6.3

1N4004S

12K

R903

DZ6.2BSA

R902

R908

220

R904 220(1/2W)

VOLTAGE REGULATOR

5.5V

C926 10/16

D910 RL203F

D911 RL203F

D912

D913

1N4004S

C915

100/35

ZD901

VOLTAGE REGULATOR

IC904

AN78L05

CONSTANT

1

3

2

0.6V D920

DS1SS133

D914 RL203F

D916 1N4004S

1N4004S

ZD902

DZ300BSB

C916

47/50

100

R905

-28.2V

-40.8V

KTA1266 GR

23.7V

D915 RL203F

D917

C917

47/50

-28.2V

Q901

3.3K

R906

C927

470/25

C918

47/50

D907

1N4004S

D921

1N4004S

D922

1N4004S

C921

0.1(ML)

C923

0.047(ML)

C919

D908

1N4004S

D909

1N4004S

C920

100/50

D923 1N4004S

D924 1N4004S

T2.5A L 250V

T1.6A L 250V

C924

0.047(ML)

100/50

F901

C922

0.1(ML) F902

5

L-CH

SO601

GND

SPEAKER

GND

TERMINALS

R-CH

TRANSFORMER

1

2

3

4

5

6

CNS902

CNP902

C928

0.047 (ML)

BACK UP TRANSFORMER

5

PT901

POWER

T.F

PT902

R614 330

CNS901

1 2

5

+B

R613 330

VOLTAGE SELCTOR

CNP901

230-240V

1

220V

2

127V

3

110V

434 5

D925

1SS133

SW902

RL901

AC SOCKET

C929

RELAY

SO901

0.0047

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

7

8 9 10 11 12

Figure 21 SCHEMATIC DIAGRAM (4/15)

– 21 –

Sharp CDC-821-W Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual