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CDK-477-W
Service manual
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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
REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 13
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18
TYPES OF TRANSISTOR AND LED................................................................................................................................18
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 22
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
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
1
23
2
5
6 7 8
9 10 11 12
13 14 15 16 17
20 21 22
24
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
3
(TAPE 2) Fast Wind Button
3
(TUNER) Tuning Down Button
46.
(TAPE 2) Reverse Play Button
47.
(CD) Play/Repeat Button
3
(TAPE 1) Play Button
3
(TAPE 2) Forward Play Button
48.
(CD) Track Up/Cue Button
3
(TAPE 2) Fast Wind Button
3
(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 –
33
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
7
1
1 2 3
2
4 5 6
8
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
5
3 4
1
3
2
GBOXS0015AWM2
■ Centre speaker
11. Woofer
12. Speaker Wire
GBOXS0016AWM2
■ Surround speaker
11. Woofer
12. Speaker Wire
1
2
1
2
– 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
10
22 23
1
5 6
15 16
17 18 19 20
7
11 12 13 14
21
17.
(TAPE 2) Record Pause Button
18.
(TAPE 2) Reverse Play Button
19.
(TAPE 1/2) Stop Button
20.
(TAPE 1) Play Button
3
(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
27
26
28
– 7 –
CD-K477W
SETTING THE CLOCK
OPERATION MANUAL
1
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 ( )
2
3
4
0:00 AM 12:00 AM 0:00
5
6
7
2
Press the CLOCK button.
3
Within 5 seconds, press the MEMORY button.
4
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).
5
Press the MEMORY button.
6
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".
7
Press the MEMORY button.
8
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".
9
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.
8
9
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:
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 MW
interval (50 kHz FM interval), and "100/10" for 10 kHz MW
interval (100 kHz FM interval).
3
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.
+
-
-
+
15
15
● 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
7
Karaoke PWB
8 Front Panel 1. Flat wire ................. (H1) x1 11-2
9
Speaker Amp. PWB
10
Power Supply PWB
11 Display PWB 1. Knob....................... (L1) x2 11-4
12 CD Switch PWB 1. Screw ..................... (M1) x3 11-4
13
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
1
( 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
( R1 ) x1 ø3 x10mm
( Q1 ) x1 ø3 x10mm
Turntable
Disc Tray
( Q2 ) x1
( R2 ) 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
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.
MW
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
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
TO
TE
TRACKING/ ERROR BARANCE
1
ADJUST
2
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
6
5
SW2
MECHA UP
SW3
9
8
GND (D)
MECHA UP
GND (D)
9
8
10 10
SW1
OPEN/CLOSE
DISC No.
7
5
6
DISK NO.
OPEN/CLOSE
GND (D)M–M+
7
5
6
M3
LOADING
M
3
4
3
4
SOLM1
2
1
GND (M)
2
1
CNS10
CNP10
TO MAIN
SECTION
CD-K477W
+5V
VOLATEG
REGULATOR
+5V
DRIVE
LASER
XL1
16.934Hz
+B1
Q1 Q52
IC81
8
Q91
LCHO
RCHO
40
37
31
XVDD RVDD
LVDD
VDD
VVDD
DOUT
4144
6
27
CONT4
IC2
XOUT
XIN
64 45 3623 43
VCC1
LC78622K
CONTROL
SERVO/SIGNAL
EFMO
EFMIN
CLV+
JP–
~
9
101220
~
324043
JP–
CV+
SLC
44
SL1
IC1
LA9241M
62
LD0
SERVO AMP.
FIN2
FIN1EF
2
3
1
4
3
DRIVER
TA7291S
LORDING MOTOR
1
9
24
25
CONT2
CONT1
265853
~
RES. CQCK. COIN
SQOUT. RWC. WRQ
CE
5352515431302923271615
DAT CL
DRF SL+ SL–
SLD NC SPO FD TO
+12V(+B5)
Q93
Q91
CL, DAT, SELIAL CONTROL/CE
SL+. SL–. DRF
3222
5
6
+B1
20
7
34
272628
29
IC3
DRIVER
M56748FP
242530
13
12
PU-IN SW
35
36
10 11
98
31
7
Q81 +7.3V (+B9)
REGULATOR
+4.3V
PICKUP UNIT
FOCUS COIL
TRACKING COIL
Figure 19 BLOCK DIAGRAM (1/3)
– 19 –
M1
MOTOR
SPINDEL
M2
SLED
MOTOR
M
M
SW4
PICKUP IN
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