Sharp CDK-477-W Service manual

CD-K477W

SERVICE MANUAL

No.S8869CDK477W/

CD-K477W

CP-K477, CP-SW477, CENTER(GBOXS0015AWM2) and Surround (GBOXS0016AWM2) speaker system Constibute CD-K477W

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

Manufactured under license from Dolby Laboratories Licensing Corporation. DOLBY, the double-D symbol and "PRO LOGIC" are trademarks of Dolby Laboratories Licensing Corporation.

CONTENTS

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

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

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

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

OPERATION MANUAL ...................................................................................................................................................... 8

DISASSEMBLY................................................................................................................................................................ 10

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 13

ADJUSTMENT ................................................................................................................................................................. 14

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18

TYPES OF TRANSISTOR AND LED................................................................................................................................18

BLOCK DIAGRAM ........................................................................................................................................................... 19

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 22

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 49

TROUBLESHOOTING ..................................................................................................................................................... 50

FUNCTION TABLE OF IC................................................................................................................................................ 54

FL DISPLAY..................................................................................................................................................................... 61

REPLACEMENT PARTS LIST/EXPLODED VIEW

Page

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-K477W

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 Wavelength: 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 procedures 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.

QACCA0001AW00

QACCE0008AW00

Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCJ0003AW00

QACCL0005AW00

– 2 –

CD-K477W

● General

CD-K477W

SPECIFICATIONS

● Compact disc player section

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

50/60 Hz

Power consumption: 190 W Dimensions: Width; 270 mm (10-5/8")

Height; 316 mm (12-1/2") Depth; 343 mm (13-1/2")

Weight: 10.2 kg (22.5 lbs.)

● Amplifier section

Output power: PMPO; 1600 W

(Front) MPO; 182 W (91 W + 91 W) (10 % T.H.D) RMS; 100 W (50 W + 50 W) (10 % T.H.D) (Centre) MPO; 49 W (10 % T.H.D) RMS; 25 W (10 % T.H.D) (Surround) MPO; 49 W (total) (10 % T.H.D) RMS; 25 W (total) (10 % T.H.D) (Sub woower) MPO; 91 W (10 % T.H.D) RMS; 50 W (10 % T.H.D)

Output terminals: Front speakers; 8 ohms

Centre speaker; 8 ohms Surround speakers; 16 ohms Sub woofer; 8 ohms Headphones; 16-50 ohms (recommended; 32 ohms) CD digital output (optical)

Input terminals: Video/Auxiliary (audio signal) ×

2; 500 mV/47 kohms Microphone 1/2; 1 mV/4.7 kohms

● Tuner section

Frequency range: FM; 88 - 108 MHz

SW2; 9.5 - 21.85 MHz SW1; 3.2 - 7.3 MHz MW; 531 - 1,602 kHz

● Cassette deck section

Frequency response: 50-14,000 Hz (Normal tape) Signal/noise ratio: 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/ playback)

Wow and flutter: 0.15 % (WRMS)

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)

● Front speaker section

Type: 3-way type [130 mm (5-1/8")

Maximum input power: 100 W Impedance: 8 ohms Dimensions: Width; 190 mm (7-1/2")

Weight: 3.0 kg (6.6 lbs.)/each

● Centre speaker section

Type: 100 mm (4") woofer Maximum input power: 50 W Impedance: 8 ohms Dimensions: Width; 262 mm (10-5/16")

Weight: 1.4 kg (3.1 lbs.)

● Surround speaker section

Type: 100 mm (4") woofer Maximum input power: 25 W Impedance: 16 ohms Dimensions: Width; 170 mm (6-3/4")

Weight: 0.7 kg (1.5 lbs.)/each

● Sub woofer section

Type: 160 mm (6-1/2") woofer Maximum input power: 100 W Impedance: 8 ohms Dimensions: Width; 220 mm (8-11/16")

Weight: 3.8 kg (8.4 lbs.)

CP-K477

woofer, 50 mm (2") tweeter and super tweeter]

Height; 316 mm (12-1/2") Depth; 264 mm (10-7/16")

GBOXS0015AWM2

Height; 145 mm (5-3/4") Depth; 201 mm (7-15/16")

GBOXS00016AWM2

Height; 123 mm (4-7/8") Depth; 176 mm (6-15/16")

CP-SW477

Height; 316 mm (12-1/2") Depth; 294 mm (11-5/8")

– 3 –

CD-K477W

■ Front panel

11.

(CD) Disc Tray

12.

(CD) Disc Number Select Buttons

13.

(CD) Disc Skip Button

14.

(CD) Open/Close Button

15.

Dolby Pro Logic Indicator

16.

(CD) Disc Number Indicators

17.

(TAPE 2) Direction Indicators

18.

(TAPE 2) Reverse Mode Indicator

19.

(CD) Play Indicator

10.

(CD) Repeat Indicator

11.

(CD) Pause Indicator

12.

(TAPE 2) Record Indicator

13.

Timer Record Indicator

14.

Timer Play Indicator

15.

4-Speaker Indicator

16.

Sleep Indicator

17.

Extra Bass Indicator

18.

Random Play Indicator

19.

(CD/TUNER) Memory Indicator

20.

(TUNER) FM Stereo Indicator

21.

(TUNER) FM Stereo Mode Indicator

22.

Spectrum Analyzer

23.

Function Selector Buttons

24.

Surround Mode Selector Buttons

25.

Extra Bass Button

26.

Volume Control

27.

On/Stand-by Button

28.

Headphone Socket

29.

Karaoke Maker Switch

30.

Microphone Sockets

31.

Microphone Level Controls

32.

Digital Echo Control

33.

Equalizer Selector/Demo Mode Button

NAMES OF PARTS

6 7 8

9 10 11 12

13 14 15 16 17

20 21 22

3 4

18 19

25 26

34.

Clock Button

35.

Sleep Button

36.

(TAPE 2) Reverse Mode Button

37.

(CD) Pause Button

38.

Jog Dial

39.

(CD/TAPE) Stop Button

40.

(TAPE) Record Pause Button

41.

Sub Woofer Level Control Buttons

42.

Timer Button

43.

Memory Button

44.

(CD) Clear Button

45.

(CD) Track Down/Review Button

(TAPE 2) Fast Wind Button

(TUNER) Tuning Down Button

46.

(TAPE 2) Reverse Play Button

47.

(CD) Play/Repeat Button

(TAPE 1) Play Button

(TAPE 2) Forward Play Button

48.

(CD) Track Up/Cue Button

(TAPE 2) Fast Wind Button

(TUNER) Tuning Up Button

49.

Editing Speed Selector Buttons

27 28 29

30 31 32

34 35 36 37 38 39 40 41

42 43 44 45 46 47 48 49

– 4 –

CD-K477W

11.

(TAPE 1) Cassette Compartment

12.

(TAPE 2) Cassette Compartment

■ Rear panel

11.

CD Digital Output Socket

12.

Video/Auxiliary (Audio Signal) Input Sockets

13.

Span Selector Switch

14.

FM 75 Ohms Aerial Terminal

15.

Aerial Earth Terminal

16.

SW1/SW2/MW Aerial Terminal

17.

AC Voltage Selector

18.

AC Power Lead

19.

Front Speaker Terminals

10.

Sub Woofer Terminals

11.

Surround Speaker Terminals

12.

Centre Speaker Terminals

1 2 3

4 5 6

SPEAKERS

RATED SPEAKER IMPEDANCE:

FRONT

RIGHT LEFT

8 OHMS MIN.

SUB

WOOFER

SURROUND SPEAKERS

LEFT

RIGHT

RATED SPEAKER

IMPEDANCE:

16 OHMS MIN.

CENTER

SPEAKER

RATED SPEAKER

IMPEDANCE: 8 OHMS MIN.

9 10 11 12

– 5 –

CD-K477W

CP-K477

■ Front speaker

11. Super Tweeter

12. Tweeter

13. Woofer

14. Bass Reflex Ducts

15. Speaker Terminals

CP-SW477

■ Sub woofer

11. Woofer

12. Bass Reflex Ducts

13. Speaker Terminals

1 2

3 4

GBOXS0015AWM2

■ Centre speaker

11. Woofer

12. Speaker Wire

GBOXS0016AWM2

■ Surround speaker

11. Woofer

12. Speaker Wire

– 6 –

CD-K477W

■ Remote control

11.

Remote Control Transmitter LED

12.

Surround Mode Selector Buttons

13.

Test Tone Button

14.

Sub Woofer Level Control Buttons

15.

Centre Level Buttons

16.

Surround Level Buttons

● Tuner control section

17.

Preset Up/Down Buttons

● CD control section

18.

Track Up/Cue Button

19.

Track Down/Review Button

10.

Memory Button

11.

Disc Skip Button

12.

Stop Button

13.

Play/Repeat Button

14.

Pause Button

15.

Clear Button

16.

Random Button

● Tape control section

2 3 4

8 9

22 23

5 6

15 16

17 18 19 20

11 12 13 14

17.

(TAPE 2) Record Pause Button

18.

(TAPE 2) Reverse Play Button

19.

(TAPE 1/2) Stop Button

20.

(TAPE 1) Play Button

(TAPE 2) Forward Play Button

21.

(TAPE 2) Fast Wind Button

● Common section

22.

Extra Bass Button

23.

Equalizer Mode Button

24.

Function Selector Buttons

25.

Balance Control Buttons

26.

On/Stand-by Button

27.

Volume Up/Down Buttons

28.

Dimmer Button

24 25

– 7 –

CD-K477W

SETTING THE CLOCK

OPERATION MANUAL

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

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

Jog dial

CLOCK

ON/STAND-BY

MEMORY

TUNING ( )

0:00 AM 12:00 AM 0:00

Press the CLOCK button.

Within 5 seconds, press the MEMORY button.

Turn the jog dial to select the time display mode.

"0:00" → The 24-hour display will appear. (0:00 - 23:59) "AM 12:00" → The 12-hou r display will a ppear. (AM or PM 12:00 - 11:59) "AM 0 :00" → The 12-hour d isplay 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 34).

Press the MEMORY button.

Adjust the hour by turning the jog dial.

● When the jog dial is turned one click clockwise, the time will increase by 1 hour. When it is turned one click anti-clockwise, the time will decrease by 1 hour. Keep turning the jog dial to change the time continuously.

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

Press the MEMORY button.

Adjust the minutes by turning the jog dial.

● When the jog dial is turned one click clockwise, the time will increase by 1 minute. When it is turned one click anti-clockwise, the time will decrease by 1 minute. Keep turning the jog dial to change the time continuously.

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

Press the MEMORY button.

● The clock starts operating from "0" seconds. (Seconds are not displayed.)

Note:

● In the event of a power failure or when the AC power lead is disconnected, the clock display will go out. When the AC power supply is restored, the clock display will flash on and off to indicate the time when the power failure occurred or when the AC power lead was disconnected. If this happens, follow the procedure below to change the clock time.

To change the clock time:

When the unit is in the stand-by mode:

①

Press the MEMORY button.

②

Perform steps 6 - 9 above.

When the unit is on:

①

Press the CLOCK button.

②

Within 5 seconds, press the MEMORY button.

③

Perform steps 6 - 9 above.

To see the time display:

Press the CLOCK button.

● The time display will appear for about 5 seconds.

To change the time display mode:

①

Perform steps 1 - 2 in the section "RESETTING THE MICROCOMPUTER", on page 34.

②

Perform steps 1 - 9 above.

– 8 –

CD-K477W

(Continued)

■

FM/MW interval (span)

The International Telecommunication Union (ITU) has estab-

lished that member countries should maintain either a 10 kHz or

a 9 kHz interval between broadcasting frequencies of any MW

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 MW tuning interval (span) of your area.

To change the tuning zone:

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

Set the SPAN SELECTOR switch to "50/9" for 9 kHz MW

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

interval (100 kHz FM interval).

Press the ON/STAND-BY button whilst holding down the

button and the EQUALIZER/DEMO button.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

FM/MW

(kHz)

50/9

100/10

SPAN

SELECTOR

(Continued)

■

Remote control

● When inserting or removing the batteries, push them towards

the battery terminal.

● Installing the batteries incorrectly may cause the unit to mal-

function.

Precautions for battery use:

● Insert the batteries according to the direction indicated in the

battery compartment.

● Replace all old batteries with new ones at the same time.

● Do not mix old and new batteries.

● Remove the batteries if they are weak or if the unit will not

be used for long periods of time. This will prevent potential

damage due to battery leakage.

Caution:

Do not use rechargeable batteries (nickel-cadmium battery, etc.).

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.

● 2 "AA" size bat-

teries (UM/SUM-

3, R6, HP-7 or

similar)

0.2 m - 6 m

(8" - 20')

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 Press the ON/STAND-BY button whilst holding down the

button and the EQUALIZER/DEMO button.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

ON/STAND-BY

EQUALIZER

/DEMO

– 9 –

CD-K477W

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 suffcient care on static electricity of integrated circuits and other circuits when servicing.

CD-K477W

STEP REMOVAL

1 Top Cabinet 1. Screw ..................... (A1) x4 10-1

2 Side Panel 1. Screw ..................... (B1) x8 10-1

(Left/right)

3 CD Player Unit/ 1. Turn on the power supply, 10-2

CD Tray Cover open the disc tray, take out

4 Rear Panel 2. Screw ..................... (D1) x14 10-2

5 Tuner PWB 1. Socket .................... (E1) x1 11-1

6 Main PWB 1. Flat cable ............... (F1) x2 11-1

Karaoke PWB

8 Front Panel 1. Flat wire ................. (H1) x1 11-2

Speaker Amp. PWB

Power Supply PWB

11 Display PWB 1. Knob....................... (L1) x2 11-4

12 CD Switch PWB 1. Screw ..................... (M1) x3 11-4

Headphones PWB

14 Tape Mechanism 1. Screw ..................... (P1) x6 11-4

15 Turntable 1. Screw ..................... (Q1) x1 11-5

16 Disc Tlay 1. Screw ..................... (R1) x2 11-5

17 CD Servo PWB 1. Screw ..................... (S1) x1 11-6

(Note 2) 2. Socket .................... (S2) x4

18 CD Changer 1. Screw ..................... (T1) x4 12-1

Mechanism

19 CD Mechanism 1. Screw ..................... (U1) x1 12-1

the CD cover, and close. (Note 1)

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

3. Hook....................... (C2) x2

4. Screw ..................... (C3) x1

5. Socket .................... (C4) x3

2. Screw ..................... (E2) x2

2. Flat wire .................

3. Socket...................... (F3) x4

4. Screw....................... (F4) x3

1. Screw ..................... (G1) x3 11-2

2. Screw...................... (H2) x2

1. Socket .................... (J1) x3 11-2

2. Screw ..................... (J2) x6

1. Screw ..................... (K1) x6 11-3

2. Nut.......................... (L2) x1

3. Screw ..................... (L3)x12

1. Screw ..................... (N1) x1 11-4

2. Cover ..................... (Q2) x1

2. Guide ..................... (R2) x2

PROCEDURE

FIGURE

(F2) x3

CD-K477W

( A1 ) x2 ø3 x12mm

( B1 ) x2 ø3 x8mm

Side Panel (Right)

( B1 ) x4 ø3 x8mm

(D1) x1 ø3 x10mm

CD Player Unit

( C4 ) x1

(D1) x1 ø3x10mm

Rear Panel

( C4 ) x2

( D1 ) x10 ø3 x8mm

LOCK LEVER

Figure 10-1

(C2) x1

Pull

Rear Panel

Figure 10-2

Top Cabinet

CD ServoPWB

CD Tray Cover

( C3 ) x1 ø3 x8mm

( A1 ) x2 ø3 x12mm

Side Panel (Left)

( B1 ) x2 ø3 x8mm

Hook ( C1) x3

1 2

( C2 ) x1

Front Panel

Main PWB

Tuner PWB

(D2) x2 ø3 x10mm

Note 1:

How to open the changer manually. (Fig. 10-3)

1. Then, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom in this state. After that, push forward the CD player base.

Note 2:

After removing the connector for the optical pickup fromthe

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

Figure 10-3

– 10 –

CD-K477W

( R1 ) x1 ø3 x10mm

( Q1 ) x1 ø3 x10mm

Turntable

Disc Tray

( Q2 ) x1

( R2 ) x1

CD Player Unit

(F3) x2

(F2) x2

(G1)x2 ø3x10mm

(F2) x1

(E1) x1

Tuner PWB

Karaoke PWB

(F1) x2

SPEAKER AMP. PWB

Figure 11-1

(F4) x2 ø3x10mm

Front Panel

(E2) x2 ø3 x10mm

Front Panel

(F3) x2

(F4) x1 ø3x10mm

Main PWB

CD Switch PWB

Front Panel

(M1)x3 ø3x10mm

(L3)x12 ø3x10mm

Tape Mechanism

(P1)x6 ø3x10mm

(L1)x2

Washer

(L2)x1

Display PWB

Headphones PWB

Open

(N1)x1

ø3x10mm Cassette Holder (Left/Right)

Figure 11-4

(G1)x1 ø3x10mm

(J2)x5 ø3x10mm

Power Supply PWB

( J1 ) x1

Figure 11-2

(K1)x4 ø4x8mm

( J1 ) x2

( J2 ) x1 ø3x10mm

Speaker Amp. PWB

(K1)x1 ø3x10mm

( H1 ) x1

( H2 ) x2 ø3x10mm

Figure 11-5

( S1 ) x1 ø3 x10mm

CD Servo PWB

( S2 ) x2

(K1)x1 ø3x8mm

Figure 11-3

( S2 ) x2

CD Player Unit

Figure 11-6

– 11 –

CD-K477W

Woofer

Tweeter

Super

Tweeter

(A5)x2

ø3x10mm

(A3)x2

ø3x10mm

(A4)x4

ø4x12mm

( T1 ) x4

ø3 x12mm ( U1 ) x1 ø2.6 x10mm

Shift Lever

CD Changer Mechanism

CD Player Base

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 12-1

CP-K477

STEP REMOVAL

1 Front Speaker 1. Net.......................... (A1) x1 12-2

2. Front Panel ............ (A2) x1

3. Screw ..................... (A3) x2

4. Screw ..................... (A4) x4

5. Screw ..................... (A5) x2

CD Mechanism

PROCEDURE

FIGURE

CP-K477

Tweeter

Front Panel

(A2)x1

Net

(A1)x1

Woofer

Screw driver

CP-SW477

STEP REMOVAL PROCEDURE FIGURE

1 Sub woofer 1. Net.......................... (A1) x1 12-3

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

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

Note:

The center and rear speakers can be easily disassembled. Therefore the disassembling method is not discribed. For details refer to the disassembling drawing in the Parts Guide.

– 12 –

CP-SW477

Net ( A1 ) x1

( A2 ) x1

Figure 12-2

( A3 ) x4 ø4 x16mm

Woofer

Screwdriver

Figure 12-3

REMOVING AND REINSTALLING THE MAIN PARTS

( A1 ) x2 ø2.6 x5mm

Loading / Up / Down Motor

Motor PWB

( B1 ) x2 ø2.6 x6mm

Shaft ( B2 ) x1

Stop Washer ( B3 ) x1

Gear ( B4 ) x1

CD Mechanism

Pickup

CD MECHANISM SECTION

Perform steps 1, 2, 3,15,16,17 and 19 of the disassembly method to remove the CD mechanism.

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

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

CD-K477W

Figure 13-1

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

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

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

3. Remove the pickup.

Note

After removing the connector for the optical pickup fromthe

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

Figure 13-2

– 13 –

CD-K477W

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 100 g.cm Fast forward: TW-2231 — 50 to 100 g.cm Rewind: TW-2231 — 50 to 100 g.cm

• Tape Speed

Test Tape

Normal MTT-111 VRM01 3,000 ± Speaker speed 30 Hz terminal

Adjusting

Point

Specified Value

Tape 2: Over 80 g

Specified Value

Specified

Value

Tape 2

Instrument

Connection

(Load resistance: 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 MW Band — 531 kHz (fL): T306 *2

Coverage 1.1 ± 0.1 V SW1 Band — 3.2 MHz (fL): T307 *2

Coverage 2.0 ± 0.1V SW1 Band — 7.3 MHz (fH): TC305 *2

Coverage 7.7 ± 0.2 V SW2 Band — 9.5 MHz (fL): T308 *2

Coverage 2.1 ± 0.1V SW2 Band — 21.85 MHz (fH): TC304 *2

Coverage 7.7 ± 0.2V MW 990 kHz 990 kHz T302 *1

Tracking SW1 3.9 MHz 3.9 MHz (fL): T303 *1

Tracking SW1 7.1 MHz 7.1 MHz (fH): TC303 *1

Tracking SW2 11.65 MHz 11.65 MHz (fL): T304 *1

Tracking SW2 21.45 MHz 21.45 MHz (fH): TC302 *1

Tracking

Frequency

Display

Setting/

Adjusting

Parts

Instrument

Connection

TAPE MECHANISM PWB

VRM01

SWM1

TAPE

FAS SW

Figure 14-1

SPEED

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

– 14 –

• FM RF

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

Test Stage

Band — 87.5 kHz (fL): LT02 *1 Coverage 3.7 ± 0.1 V

RF 98 MHz 98 MHz LT01 *2

*1. Input: Antenna, Output: TP301 *2. Input: Anetnna, Output: Speaker Terminal

Frequency

10 - 30 dB

Frequency

Display

Setting/

Adjusting

Parts

Instrument

Connection

• Setting the Test Mode

Keeping the PAUSE button and TUNER button pressed, turn on POWER. Then, the frequency is initially set in the memory as shown in Table. Call it with the PRESET button to use it for adjustment and check of tuner circuit.

Preset

No.

21 ~ 40

FM Preset

1 87.50 MHz 6 531 kHz 11 3.2 MHz 16 9.5 MHz 2 108.00 MHz 7 1,602 kHz 12 7.3 MHz 17 21.85MHz 3 90.00 MHz 8 603 kHz 13 3.9 MHz 18 11.65 MHz 4 106.00 MHz 9 1,404 kHz 14 7.1 MHz 19 21.45 MHz 5 98.00 MHz 10 990 kHz 15 5.06 MHz 20 15.1 MHz

No.

Preset

No.

SW1

Preset

No.

SW2

CD-K477W

• FM Detection

Signal generator: 10.7 MHz, FM sweep

Test Stage

IF 10.7 MHz 98 MHz TT01 *1

*1. Input: Antenna, Output: TP301 *2. Input: Anetnna, Output: Speaker Terminal

• FM Mute Level

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

Frequency Adjusting

98.00 MHz 98.00 MHz VR351 *1 Input: Antenna (25 dBµV) Output: Speaker

*1. Adjust so that an output signal appears.

Frequency

Display

Frequency

Display

Setting/

Adjusting

Parts

(Turn the core of transformer TT01 fully counterclock wise)

Parts

Instrument

Connection

Instrument

Connection

Terminal

R357

TUNER PWB

T351

AM IF

IC303

TP302

VR351

FM Mute Level

fL fH

SW2 Coverage

SW1 Band Coverage

fL fH

T307 TC305

T308 TC304

FM Band Coverage

LT02

T306

MW Band Coverage

TT01

TP301

FM IF FM RF

LT01

SW2 Tracking

fH fL

T304TC302

T303TC303

T302

MW Tracking

SO301 ANTENNA TERMINAL

fH fL

SW1 Tracking

Figure 15 ADJUSTMENT POINTS

– 15 –

CD-K477W TEST MODE

• 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. 16-1) 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

<MEMORY> Tracking on the spot. SERVO ON PLAY

IL is not performed.

<STOP>

STOP

<PLAY> key input

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

Press <STOP> key.

Stop

<Disc Number 3> key: Track 15

Note:

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 16-1

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. 16-2)

2. Tracking offset (Fig. 16-3)

3. E/F balance (tracking error balance) (Fig. 16-4)

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.

0.1s

0.50 V IC1 20 FE

0.1s

0.50 V IC1 7 TE

FOCUS OFF-SET ADJUST

TRACKING OFF-SET ADJUST

1 2

10ms

0.50 V IC1 20 FE

10ms

0.50 V IC1 7 TE

Figure 16-2

200 ms 1V/diV IC 1 15

200 ms 1V/diV IC 1 7

TRACKING/ ERROR BARANCE

ADJUST

Figure 16-4

– 16 –

Figure 16-3

Enlarged View

TRACKING OFF-SET ADJUST

1 2

CD-K477W

EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD

Outline

• Namely, two speakers are connected in parallel to one

amplifier.

• In the Pro Logic BYPASS mode the amplifier for C-ch (center

channel) and the amplifier for S-ch (surround channel) are in MUTE state. The SP output is cut.

• State of element output and terminal output in specific mode

State of set Dolby Pro Logic Dolby Pro Logic On mode Output point Bypass mode Normal mode Phantom mode

ICC01 12 pin L-out Output enabled state Output enabled state Output enabled state

11 pin R-out Output enabled state Output enabled state Output enabled state ICC01 9pin C-out No output Output enabled state No output ICC01 10pin S-out No output Output enabled state Output enabled state SP OUT L-ch Output enabled state Output enabled state Output enabled state (TMV01) R-ch Output enabled state Output enabled state Output enabled state SP OUT C-ch No output in MUTE (Q604) state Output enabled state No output in MUTE (Q604) state (TMX11) SP OUT S-ch No output in MUTE (Q603) state Output enabled state Output enabled state (TMX11)

Test tone output

• Pro Logic ON Normal mode Press the remote control TEST TONE button. →Output of only L-ch →Output of only C-ch

↑ ↓

Output of only S-ch ← Output of only R-ch The test tone (noise) is repeatedly output for output period (2 sec). In this case the following indication appears repeatedly. →TEST →L-ch →C-ch

↑ ↓

S-ch ← R-ch

• Pro Logic ON Phantom mode Press the remote control TEST TONE button. →Output of only L-ch →Output of only R-ch

↑ ↓

← Output of only S-ch The test tone (noise) is repeatedly output for output period (2 sec).

In this case the following indication appears repeatedly. →TEST → L-ch → R-ch ↑ ↓ ← S-ch←

Relation between VIDEO IN input and output in Pro Logic ON state

(1) L-ch/R-ch same phase input into VIDEO IN input jack in

VIDEO Function mode

Output point Normal mode

SP out L-ch Almost no output (only omitting component) (TMV01) R-ch Almost no output (only omitting component)

(TMX11) SP out C-ch (TMX11) SP out S-ch

Input signal is output. Almost no output (only omitting component)

• In the normal mode of Pro Logic ON mode the amplifiers for C-ch and S-ch are in operative state, so that the SP output appears.

• In the Phantom mode of Pro Logic ON mode the amplifier for C-ch is in MUTE state, so that the SP output is cut. The amplifier for S-ch (surround) is in operative state, so that the SP output appears

Output point Phantom mode

SP out L-ch Input signal is output. (TMV01) R-ch Input signal is output.

(TMX11) SP out C-ch SP cut, no output (TMX111) SP out S-ch

Almost no output (only omitting component)

(2) L-ch/R-ch reverse phase input into VIDEO IN input jack in

VIDEO Function mode

(Reverse phase: Phase difference between L and R is 180°)

Output point Normal mode

SP out L-ch (TMV01) R-ch

(TMX11) SP out C-ch (TMX11) SP out S-ch Input signal is output.

Output point Phantom mode

SP out L-ch (TMV01) R-ch

(TMX11) SP out C-ch SP cut, no output (TMX11) SP out S-ch Input signal is output.

Almost no output (only omitting component) Almost no output (only omitting component)

Almost no output (only omitting component)

Almost no output (only omitting component) Almost no output (only omitting component)

• Accordingly, if you want to output signal waveform to C-ch SP

out, give the same phase input into L-ch/R-ch INPUT in the Pro Logic Normal mode.

If one of channels receives input, C-ch does not output. Only

L-ch or R-ch outputs.

• If you want to output signal waveform to S-ch SP out, you can

use either Normal mode or Phantom mode. However, 180° reverse phase input must be given to L-ch/R-ch INPUT.

– 17 –

CD-K477W

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 SW991 VOLTAGE SELECTOR 230-240V SWD1 VOLUME JOG ON—OFF SWD2 JOG ON—OFF SWD3 X-BASS ON—OFF SWD4 PRE EQ ON—OFF SWD5 MENU ON—OFF SWD12 TUNING UP/CUE ON—OFF SWD13 STOP ON—OFF SWD14 NORMAL EDIT ON—OFF SWD15 HIGH EDIT ON—OFF SWD16 REC/PAUSE ON—OFF SWD17 F-PLAY ON—OFF SWD19 SUB WOOFER VOLUME UP ON— OFF SWD20 SUB WOOFER VOLUME DOWN ON—OFF SWD24 4SP-1 ON—OFF SWD25 4SP-2 ON—OFF SWD27 PHANTOM ON—OFF SWD28 NORMAL ON—OFF SWD29 BYPASS ON—OFF SWD30 TUNING DOWN/REWIND ON—OFF

FRONT

VIEW

FRONT

VIEW

• 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.

SWD31 CD PAUSE ON—OFF SWD32 REVERSE MODE ON—OFF SWD33 R-PLAY ON—OFF SWD34 CLOCK ON—OFF SWD35 MEMORY ON—OFF SWD36 TIMER ON—OFF SWD37 SLEEP ON—OFF SWD38 CLEAR ON—OFF SWD39 VIDEO/AUX 1 ON—OFF SWD40 VIDEO/AUX 2 ON—OFF SWD41 TAPE 1/2 ON—OFF SWD42 TUNER/BAND ON—OFF SWD43 CD ON—OFF SWD48 POWER ON—OFF SWD49 KARAOKE ON—OFF SWD50 DISC 1 ON—OFF SWD51 DISC 2 ON—OFF SWD52 DISC 3 ON—OFF SWD53 DISC SKIP ON—OFF SWD54 OPEN/CLOS ON—OFF SWF2 SPAN SELECTOR 50/9 SWM3 REC FWD ON—OFF SWM4 REC RVS ON—OFF SWM5 F.A.S ON—OFF SWM6 CAM ON—OFF

FRONT VIEW

KTA1266 GR KTA1270Y KTA1271 Y KTC3199 GR KTC3203 Y KRA102 M

E C B

(S)(G)(D)

(1) (2) (3)

KRA109 M KRC102 M KRC104 M KRC107 M 2SC535 C 2SD468 C 2SC2878 A

FRONT

VIEW

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

2SD2012 2SB1375

SLR325 MG SLR325 VR KL052 UL SLR505 MC LMKD515B

Figure 18 TYPES OF TRANSISTOR AND LED

– 18 –

KV1236Z23

TO MAIN SECTION

+B1

SW2

MECHA UP

SW3

GND (D)

MECHA UP

GND (D)

10 10

SW1

OPEN/CLOSE

DISC No.

DISK NO.

OPEN/CLOSE

GND (D)M–M+

SOLM1

GND (M)

CNS10

CNP10

TO MAIN

SECTION

CD-K477W

+5V

VOLATEG

REGULATOR

+5V

DRIVE

LASER

XL1

16.934Hz

+B1

Q1 Q52

IC81

Q91

LCHO

RCHO

XVDD RVDD

LVDD

VDD

VVDD

DOUT

4144

CONT4

IC2

XOUT

XIN

64 45 3623 43

VCC1

LC78622K

CONTROL

SERVO/SIGNAL

EFMO

EFMIN

CLV+

JP–

101220

324043

JP–

CV+

SLC

SL1

IC1

LA9241M

LD0

SERVO AMP.

FIN2

FIN1EF

DRIVER

TA7291S

LORDING MOTOR

CONT2

CONT1

265853

RES. CQCK. COIN

SQOUT. RWC. WRQ

5352515431302923271615

DAT CL

DRF SL+ SL–

SLD NC SPO FD TO

+12V(+B5)

Q93

Q91

CL, DAT, SELIAL CONTROL/CE

SL+. SL–. DRF

3222

+B1

272628

IC3

DRIVER

M56748FP

242530

PU-IN SW

10 11

Q81 +7.3V (+B9)

REGULATOR

+4.3V

PICKUP UNIT

FOCUS COIL

TRACKING COIL

Figure 19 BLOCK DIAGRAM (1/3)

– 19 –

MOTOR

SPINDEL

SLED

MOTOR

SW4

PICKUP IN

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