Sharp CD-C405W User manual

– 1 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
CONTENTS Page
SPECIFICATIONS ............................................................................................................................................................. 2
VOLTAGE SELECTION (CD-C405W ONLY) .................................................................................................................... 2
NAMES OF PARTS ........................................................................................................................................................... 3
OPERATION MANUAL ...................................................................................................................................................... 5
DISASSEMBLY.................................................................................................................................................................. 6
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 9
ADJUSTMENT ..................................................................................................................................................................10
NOTES ON SCHEMATIC DIAGRAM ...............................................................................................................................12
BLOCK DIAGRAM ............................................................................................................................................................13
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................16
WAVEFORMS OF CD CIRCUIT.......................................................................................................................................30
TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION)...............................................................................31
FUNCTION TABLE OF IC................................................................................................................................................ 35
FL DISPLAY......................................................................................................................................................................41
REPLACEMENT PARTS LIST/EXPLODED VIEW
SHARP CORPORATION
SERVICE MANUAL
CD-C405W and CP-C405 constitute CD-C405W.
CD-C420H and CP-C410 and CP-SR421 constitute CD-
C405W.
CD-C405W
CD-C420H
CP-C405
CP-C410
CP-SR421
Illustration: CD-C405W/CP-C405
Illustration: CD-C420H/CP-C410/CP-SR401 • In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
No. S5733CDC405W/

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
General
Power source: AC 110/127/220/230 - 240 V, 50/60 Hz
(CD-C405W)
Power source: AC 230 V, 50 Hz
(CD-C420H)
Power consumption: 65 W
Dimensions: Width; 270 mm (10-5/8")
Height; 300 mm (11-13/16")
Depth; 359.5 mm (14-3/16")
Weight: 5.0 kg (11.0 lbs.)
Amplifier section
Output power: PMPO; 160 W (total)
MPO; 34 W (17 W + 17 W)(10 % T.H.D.)
RMS; 20 W (10 W + 10 W)(10 % T.H.D.)
Output terminals: Speakers; 8 ohms
(CD-C405W) Headphones; 16-50 ohms
(recommended; 32 ohms)
Output terminals: Front speakers; 8 ohms
(CD-C420H) Rear speakers; 16 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
Input terminals: Video/Auxiliary (audio signal);
245 mV/47 kohms
Tuner section
Frequency range: FM; 88 - 108 MHz
(CD-C405W) AM; 531 - 1,602 kHz
Frequency range: FM; 87.5 - 108 MHz
(CD-C420H) AM; 522 - 1,620 kHz
Compact disc player section
Type: 3-disc multi-play compact disc player
Signal readout: Non-contact, 3-beam semi-con-ductor
laser pickup
D/A Converter: 1-bit D/A converter
Frequency response: 20 - 20,000 Hz
Dynamic range: 90 dB (1 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)
CD-C405W/CD-C420H
Speaker section
Type: 2-way type [10 cm (4") woofer and super
tweeter]
Maximum input power: 20 W
Impedance: 8 ohms
Dimensions: Width; 180 mm (7-1/8")
Height; 300 mm (11-13/16")
Depth; 214 mm (8-7/16")
Weight: 2.4 kg (5.3 lbs.)/each
Front speaker section
Frequency response: 100 MM (4") full-range speaker
Maximum input power: 20W
Impedance: 8 ohms
Dimensions: Width; 180 mm (7-1/8")
Height; 300 mm (11-13/16")
Depth; 204 mm (8")
Weight: 2.1 kg (4.6 lbs.)/each
Rear speaker section
Type: 100 mm (4") full-range speaker
Maximum input power: 10 W
Impedance: 16 ohms
Dimensions: Width; 170 mm (6-11/16")
Height; 120 mm (4-3/4")
Depth; 175 mm (6-7/8")
Weight: 0.6 kg (1.3 lbs.)/each
CD-C405
SPECIFICATIONS
CP-C410
CP-SR421
Specifications for this model are subject to change without prior
notice.
VOLTAGE SELECTION (CD-C405W)
Before operating the unit on mains, check the preset voltage. If the votage is different from your local voltage. Slide the AC power
supply socket cover by slightly loosing the screw to the visible indication of the side of your local voltage.

– 3 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
NAMES OF PARTS
CD-C405W
Rear Panel
1. Video/Auxiliary (Audio Signal) Input Sockets
2. Speaker Terminals
3. AC Voltage Selector
4. AC Power Lead
5. Span Selector Switch
6. FM 75 Ohms Aerial Terminal
7. Aerial Earth Terminal
8. AM aerial Terminal
Front Panel
1. Disc Tray
2. Disc Number Indicator
3. Timer Indicator
4. Record Indicator
5. Sleep Indicator
6. Extra Bass Indicator: X-BASS
7. Function/CD Track/CD Counter/Frequency/Preset
Channel/Volume/Timer/Sleep Time Indicator
8. Memory Indicator
9. FM Stereo Mode Indicator: ST
10. FM Stereo Indicator:
11. CD Play Indicator:
12. CD Repeat Indicator:
13. CD Pause Indicator:
14. Power Switch
15. Extra Bass/Equalizer Mode Button
16. Volume Up/Down Buttons:
17. Random/Demo Button
18. Clock Button
19. Timer/Sleep Button
20. Function Selector Buttons
21. Memory/Set Button
22. Tuning and Time Up/Down Buttons:
23. Track Down/Review/Preset Down Button:
24. Play/Repeat Button:
25. Stop Button:
26. Track Up/Cue/Preset Up Button:
27. Disc Skip Button
28. Open/Close Button:
29. Record Pause Button:
30. Headphone Socket
31. (TAPE 1) Cassette Compartment
32. (TAPE 2) Cassette Compartment
CD-C405W/CD-C420H
1
MEMORY ST
kHz
MHz
1 2 3
REC SLEEP X-BASS
23456
7
8910
11
12
13
15 17
18
19
20
21
22 23 24 25 2627 28 29 30
14 16
31 32
1
2
3
4
5
6
7
8

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 4 –
CD-C420H
Rear Panel
1. Speaker Terminals
2. AC Power Lead
3. Video/Auxiliary (Audio Signal) Input Sockets
4. FM 75 Ohms Aerial Socket
5. AM Loop Aerial Socket
1
2
3
4
5
6
7
11
12
10
98
14
13
15
19
22
20
18
17
16
21
CP-C410
Speaker Section
6. Full Range Speaker
7. Speaker Wire
Speaker Section
8. Full Range Speaker
9. Speaker Wire
CP-C405
Speaker Section
10. Super Tweeter
11. Woofer
12. Speaker Wire
Remote Control
1. remote Control Transmitter LED
CD Control section
2. Disc Number Select Buttons
3. Track Down/Review Button:
4. Track Up/Cue Button:
5. Disc Skip Button
6. Play/Repeat Button:
7. Stop Button:
8. Memory Button
9. Clear Button
10. Random Button
11. Pause Button:
Tuner control section
12. Preset Up/Down Buttons:
Tape control section
13. (TAPE 1/2) Stop Button:
14. (TAPE 1) Play Button:
15. (TAPE 2) Record Pause Button:
16. (TAPE 2) Play Button:
17. (TAPE 2) Rewind Button:
18. (TAPE 2) Fast Forward Button:
19. Function Selector Buttons
20. Extra Bass/Equalizer Mode Button
21. Power Button
22. Volume Up/Down Buttons:
CD-C405W/CD-C420H
CP-SR421
13
4
5
2
6
7
9
8
10
11
12

– 5 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
OPERATION MANUAL
ON/ STAND-BY
CLOCK
MEMORY/ SET
TUNING/TIME ( )
AM 12:00AM 0:00
0:00
2 3
4
7
6 5
8 9
SETTING THE CLOCK
1
Press the ON/STAND-BY switch to enter the stand-by mode.
2
Press the CLOCK button.
3
Within 3 seconds, press the MEMORY/SET button.
4
Press the TUNING/TIME ( or ) button to select the time display.
"0:00" → The 24-hour display will appear. (0:00 - 23:59) "AM 0:00" →The 12-hour display will appear. (AM 0:00 - PM 11:59) "AM 12:00" →The 12-hour display will appear. (AM 12:00 - PM 11:59)
5
Press the MEMORY/SET button.
6
Press the TUNING/TIME ( or ) button to adjust the hour. Press the TUNING/TIME button once to advance the time by 1 hour. Press for more than 0.5 seconds to advance continu- ously. 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 button for at least 0.5 seconds 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.)
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 ON/STAND-BY switch is set to STAND-BY.
1
Press the MEMORY/SET button.
2
Perform steps 6 - 9 above.
When the ON/STAND-BY switch is set to ON.
1
Press the CLOCK button.
2
Within 3 seconds, press the MEMORY/SET button.
3
Perform steps 6 - 9 above.
To see the time display: (When the power is ON) Press the CLOCK button.
The time display will appear for about 3 seconds.
To switch the time display mode:
1
Press the ON/STAND-BY switch to enter the stand-by mode.
2
Press and hold down the VOLUME button, the button and the ON/STAND-BY switch all at the same time. Hold them for at least 2 second. (Refer to RESETTING THE MICROCOMPUTER on page 16.)
3
Perform steps 1 - 9 above.
Note:
The operation explained above will erase all data stored in memory, such as clock and timer settings, tuner and CD pres- ets.
In this example, the clock is set for the 24-hour (0:00) system.
PREPARATION FOR USE
15
15
Notes concerning use:
Replace the batteries if control distance decreases or oper- ation 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')
RESETTING THE MICROCOMPUTER
Reset the microcomputer under the following condi- tions:-
To erase all of the stored memory contents (clock and timer settings, tuner and CD presets). If the display is not correct. If the operation is not correct.
1
Press the ON/STAND-BY (POWER) switch to enter the stand- by mode.
2
Press and hold down the VOLUME button, the button and the ON/STAND-BY (POWER) switch all at the same time. Hold them for at least 1 second.

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 6 –
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.Takeoffnylonbandsorwireholderswheretheyneedbe
removed when disassembling the unit. After servicing
theunit, be sure to rearrange theleads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
CD-C405W/CD-C420H
1 Top Cabinet 1. Screw ..................... (A1) x4 6-1
2 Side Panel 1. Screw ..................... (B1) x6 6-1
(Left/right)
3 CD Player Unit/ 1. Turn on the power supply, 6-2
CD Tray Cover open the disc tray, take out
the CD cover, and close.
(Note 1)
2. Hook ....................... (C1) x3
3. Hook ....................... (C2) x2
4. Socket .................... (C3) x4
4 Back Board 1. Screw ..................... (D1) x5 6-2
2. Screw ..................... (D2) x1
5 Main PWB/ 1. Screw ..................... (E1) x12 7-1
Display PWB/ 2. Socket .................... (E2) x4
Headphone PWB
6 Front Panel 1. Screw ..................... (F1) x2 7-1
2. Hook ....................... (F2) x2
7 Tape Mechanism 1. Open the cassette holder. 7-2
2. Screw...................... (G1) x6
8 Turntable 1. Screw ..................... (H1) x1 7-3
2. Cover ...................... (H2) x1
9 Disc Tray 1. Screw ..................... (J1) x2 7-3
2. Guide ...................... (J2) x2
10 CD Changer 1. Screw ..................... (K1) x4 7-4
Mechanism
11 CD Mechanism 1. Screw ..................... (L1) x1 7-4
STEP REMOVAL PROCEDURE FIGURE
CD-C405W/CD-C420H
Note 1:
How to open the changer manually. (Fig. 6-3)
1. Insert the tip of fine screwdriver into the hole of CD player
base, and press down the worm wheel < A > .
2. 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.
CP-C410
STEP REMOVAL PROCEDURE FIGURE
1 Speaker 1. Front panel............. (A1) x1 7-5
2. Screw ..................... (A2) x4 7-6
CP-SR421
STEP REMOVAL PROCEDURE FIGURE
1 Top cabinet 1. Screw ..................... (B1) x6 8-1
CP-C405
STEP REMOVAL PROCEDURE FIGURE
1 Speaker 1. Front panel............. (C1) x1 8-2
2. Screw ..................... (C2) x4 8-3
Figure 6-2
< A >
LOCK
LEVER
Figure 6-3
Figure 6-1
( B1 ) x1
ø3 x12mm
( B1 ) x2
ø3 x12mm ( B1 ) x2
ø3 x12mm ( B1 ) x1 ø3 x12mm
Top Cabinet
Side Panel
(Right)
Side Panel
(Left)
( A1 ) x2
ø3 x12mm
( A1 ) x2
ø3 x12mm
Back Board
CD Tray Cover
CD Player Unit
Hook
( C2 ) x1
Push
Hook
( C2 ) x1
Driver
Driver
Push
( D2 ) x1
ø3 x8mm
( D1 ) x5
ø3 x12mm
Hook
( C1) x3
( C3 ) x3
( C3 ) x1
Illustration: CD-C405W

– 7 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
Figure 7-3
Care when installing the CD changer mechanism.
InstalltheCDchangermechanismontheCDplayerbaseafter
the shift lever has been set in the highest position.
( J1 ) x1
ø3 x10mm
( J1 ) x1
ø3 x10mm
( H1 ) x1
ø3 x10mm
Turntable
Disc Tray
( H2 ) x1
( J2 ) x1
( J2 ) x1
CD Player Unit
Figure 7-4
Figure 7-6
CP-C410
Figure 7-2
( K1 ) x4
ø3 x14mm
( L1 ) x1
ø2.6 x10mm
CD Changer
Mechanism
CD Mechanism
Shift Lever
CD Player Base
Speaker Box
Woofer
(A2) x4
4 x12mm
Figure 7-5
Front Panel
(A1) x1
Speaker Box
Screw
driver Driver should be pried
away from speaker Box.
Direction of handle
( E1 ) x1
ø3 x10mm
( E1 ) x1
ø3 x12mm
( E1 ) x9
ø3 x8mm
( E2 ) x1
( E2 ) x1
( E2 ) x2
( E1 ) x1
ø3 x8mm
Front Panel
Tape
Mechanism
Display PWB
Main PWB
Tape
Mechanism
Open
Cassette
Holder
( E2 ) x1
Power Supply
PWB
Front Panel
( G1 ) x6
ø3 x10mm
( F1 ) x2
ø3 x10mm
Hook
( F2 ) x1
Hook
( F2 ) x1
Figure 7-1

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 8 –
CP-SR421
Figure 8-1
CP-C405
Front Panel
(C1) x1
Speaker Box
Screw
driver Driver should be pried
away from speaker Box.
Direction of handle
Figure 8-2
Speaker Box
(C2) x4
4 x35mm
Woofer
Figure 8-3
(B1)x2
ø3x20mm
(B1)x2
ø3x20mm
(B1)x2
ø3x20mm
Woofer

– 9 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
How to remove the turntable up/down motor
(See Fig. 9-2)
1. Remove the screws (B1) x 2 pcs., to remove the turntable
up/down motor.
How to remove the pickup (See Fig. 9-3)
1.Removethescrews(C1)x2 pcs., to remove the shaft (C2).
2. Remove the stop washer (C3) x 1 pc., to remove the gear
(C4).
3. Remove the pickup.
Figure 9-2
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1, 2, 3, 10 and 11 of the disassembly method
to remove the CD mechanism.
How to remove the loading motor
(See Fig. 9-1)
1. Remove the screws (A1) x 2 pcs., to remove the loading
motor.
Figure 9-1
( A1 ) x2
ø2 x5mm
Loading Motor
( C1 ) x2
2.6 x6mm
( C2 ) x1 ( C3 ) x1 ( C4 ) x1
CD Mechanism
Pickup
Figure 9-3
( B1 ) x2
ø2 x5mm
Turntable
Up/Down Motor

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 10 –
MECHANISM SECTION
•Driving Force Check
Torque Meter Specified Value
Play: TW-2412 Tape 1: Over 80 g
Tape 2: Over 80 g
•Torque Check
Torque Meter
Tape 2
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
Specified
Value
Adjusting
Point Instrument
Connection
Test Tape
Tape MTT-111 Volume in 3,000 ±Speaker
speed motor. 30 Hz terminal
(Load
resistance:
8 ohms)
Specified Value
Tape 1
•Tape Speed
ADJUSTMENT
• AM IF/RF (CD-C405W)
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna, Output: TP302
*2. Input: Input is not connected, Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
IF 450 kHz 1,602 kHz T351 *1
Band — 531 kHz (fL): T302 *2
Coverage 1.1 ±0.1 V
Tracking 990 kHz 990 kHz (fL): T302 *1
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
• AM IF/RF (CD-C420H)
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna, Output: TP302
*2. Input: Input is not connected, Output: TP301
IF 450 kHz 1,620 kHz T351 *1
Band — 522 kHz (fL): T302 *2
Coverage 1.1 ±0.1 V
Tracking 990 kHz 990 kHz (fL): T302 *1
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
•Setting the Test Mode
Keeping the TUNING (DOWN) button and MEMORY 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.
1 87.50 MHz 6 522 kHz
2 108.00 MHz 7 1,620 kHz
3 90.00 MHz 8 603 kHz
4 106.00 MHz 9 1,404 kHz
5 98.00 MHz 10 990 kHz
11 ~ 40
Preset No. FM Preset No. AM
Adjusting
Parts Instrument Connection
Frequency
Display
Frequency
98.00 MHz 98.00 MHz VR351 *1 Input: SO301
(25 dBµV) Output: Speaker
Terminal
•FM Mute Level
Signal generator: 1 kHz, 40 kHz dev. FM modulated.
*1. Adjust so that an output signal appears
TUNER PWB
AM BAND
COVERAGE fL
ANTENNA
TERMINAL
T351
L311 CNP301
T302
FE301
VR351
FM MUTE
LEVEL
AM IF
IC303
AM TRACKING
fL
SO301
S0301
ANTENNA
TERMINAL
CD-C420H
CD-C405W
TP301
TP302
R331
Figure 10-1 ADJUSTMENT POINTS
TAPE MECHANISM
MM 1
Motor
Volume in motor

– 11 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
TEST MODE
2
1
TO
TE
200 ms
1V/diV
IC 1 15
200 ms
1V/diV
IC 1 7
TRACKING/
ERROR
BARANCE
ADJUST
Figure 11-2 Figure 11-3
2
1
10ms
0.50 V
IC1 20 FE
10ms
0.50 V
IC1 7 TE
Enlarged
View
TRACKING
OFF-SET
ADJUST
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 SECTION Figure 11-1
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
• 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
<PLAY> key input Press <STOP> key. Stop
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
<MEMORY>
Tracking on the spot.
SERVO OFF PLAY
<MEMORY>
Tracking on the spot.
SERVO ON PLAY STOP
2
0.1s
0.50 V
IC1 20 FE
0.1s
0.50 V
IC1 7 TE
1
FOCUS
OFF-SET
ADJUST
TRACKING
OFF-SET
ADJUST
Figure 11-4
IL is not performed.
<STOP>
123

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 12 –
SW714 TUNING UP ON—OFF
SW715 TUNING DOWN ON—OFF
SW717 POWER ON—OFF
SW718 CLOCK ON—OFF
SW719 TIMER/SLEEP ON—OFF
SW721 MEMORY/SET ON—OFF
SW722 CD ON—OFF
SW723 TUNER ON—OFF
SW724 TAPE ON—OFF
SW725 AUX ON—OFF
SW961 AC VOLTAGE SELECTOR 110—127—
[CD-C405W ONLY] 220—230-240
SWM 1 T1 CrO2[CD-C405W ONLY] ON—OFF
SWM 3 FOOL PROOF ON—OFF
SWM 4 F.A.S. ON—OFF
SWM 5 CAM ON—OFF
SW1 OPEN/CLOSE ON—OFF
SW2 MECHA UP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW301 SPAN SELECTOR 50/9-100/10
[CD-C405W ONLY]
SW701 RANDOM/DEMO ON—OFF
SW702 VOLUME DOWN ON—OFF
SW703 X-BASS ON—OFF
SW704 VOLUME UP ON—OFF
SW705 OPEN/CLOSE ON—OFF
SW706 DISC SKIP ON—OFF
SW709 REC./PAUSE ON—OFF
SW710 UP ON—OFF
SW711 STOP ON—OFF
SW712 PLAY ON—OFF
SW713 DOWN ON—OFF
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis 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.
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
electrolyticcapacitor,theexpression“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
ECB
(S)(G)(D)
(1) (2) (3)
FRONT
VIEW
BCE
(D)(G)(S)
(3) (2) (1)
FRONT
VIEW
Figure 12 TYPES OF TRANSISTOR
2SA1015 GR
2SB561 C
2SC1845 F
2SC380 O
KRA102 M
KRA109 M
KRC102 M
2SD2012 Y
KRC104 M
KRC107 M
KTA1266 GR
KTA1273 Y
KTC3199 GR
KTC3203 Y

– 13 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
Figure 13 BLOCK DIAGRAM (1/3)
1
2
3
4
5
98
6
720
12
13
24 25 30
31
3222
34
35 36
10 11
27 26 28 29
PU-IN SW
XL1
XIN
LD0
FIN2 JP–
CV+
SLC
SL1
FIN1 E F
TO
FD
SPO
SP
SLD
SL–
SL+
DRF
CL
DAT
CE
VCC1 6
+5V
PICKUP IN
SW4
FOCUS COIL
TRACKING COIL
M1
SPIN
MOTOR
M
M
M2
SLIDE
MOTOR
PICKUP UNIT
9
IC2
LC78623U
SERVO/SIGNAL
CONTROL
+B1
IC5
M56748FP
DRIVER
IC1
LA9240M
SERVO AMP.
6
1
95
+B1
+12V(+B5)
( TO IC401 )
RES. CQCK. COIN SQOUT. RWC. WRQ
~
~
~
CL, DAT, SELIAL CONTROL/CE Q93
Q91
SL+. SL–. DRF
7
3
9
8
7
6
5
4
3
2
1
GND (D) MECHA UP GND (D) DISK NO. OPEN/CLOSE GND (D) M– M+ GND (M)
9
8
7
6
5
4
3
2
1
CNP10
M
+5V
62 64 45 3623 43
37
38 39
40 24 25
10 10
265853
10 12 20
32 40 43 44
5352515431302923271615
4144
Q1
+5V Q81 +5.6V (B1)
REGULATOR
TO MAIN SECTION
IC91
TA7291S
LOADING MOTOR
DRIVER
XOUT
EFMO EFMIN CLV+ JP–
CONT2 CONT1
RCHO
RVSS
LVSS
LCHO
VVDD
VDD
LVDD
RVDD
XVDD
SW1 OPEN/CLOSE
SW2 MECHA UP SW3 DISC No.
M3 LOADING
SOLM1
TO DISPLAY SECTION
CNS10

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 14 –
Figure 14 BLOCK DIAGRAM (2/3)
TAP
E
VIDEO/AUX
TUN
CD
1
3
45
17
18
13
67
16
14
12 19
10
23
24
8
9
1
345 1
7
7
6
20 12 22 15 16 11
21
17
13
10
1
5
42 73
8
6
89
17
14
15
12
1021222324
13
18 16
5
4
3
2
6
24
20
21
R-CH
L-CH
PB HEAD
L NF
L (T1)
R (T1)
L (T2)
R (T2)
R NF H/N
T1/T2
POP REDUCE
L REC
R REC R NF
REC
L NF
P. B.
REC
L-CH
R-CH
REC/PB
HEAD
ERASE
HEAD
OCS
BIAS
REF ALC
T1/T2
X352
4.5MHz
OSC
STEREO
ST
ST
AM IF
FM IF IN
VT
FM IN
AM IN
FM
+B4
AM
TRACKING AM BAND
COVERAGE
PLAYBACK&RECORD/
PLAYBACK AMP.
IC101
AN7345K
L
RP. B
FE301
FM FRONT END
420H: S0003AW
405W: S0005AW
Q128
L104 BIAS
Q106
Q103
~
P.BREC
AC BIAS
Q107
Q108 Q111
Q109 Q110
T1/T2
MUTING
Q121
Q122 REC
+B4
L
R
CE
DI
CL
DO
T351
IC302
LC72131
PLL CONTROLLER
FM
TAPE 1
TAPE 2
R
L
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
FM IF
CF302
CF301
420H ONLY
Q301
VCC
SO301
ANTENNA
TERMINAL
AM LOOP
ANTENNA
L311 BALUN
Q360
+B4 Q361
VR351
FM MUTE LEVEL
FM OSC
IF OUT
AM RF IN
AM OSC IN
AM OSC OUT
AFC
SD
FM/AM
MUTI
N
+B6
+B4
REGURATER
VOLTAGE
L-CH
R-CH
L354
420H ONLY
+B6
MONO
/
MIX
OUT REG FM
DET
Q124 Q126
SWITCHING BIAS
X351
CF351
IC303
LA1832
FM/AM IF
T302
AM AMT.
FROM CD SECTION
S
O
CD-C405W
BLOCKMAIN
420H ONLY
405W ONLY
420H ONLY
420H ONLY
FM
AM
FM/AM
ANTENNA
TERMINAL

– 15 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
Figure 15 BLOCK DIAGRAM (3/3)
13
4
3
11
MUTE
L
R
R
L-OUT
R-OUT
92
5
12
R-IN
L-IN
7VCC
14
NF
8
+12V (ANALOG)
+B4
+12V (MOTOR)
+B5
OUT
IC801
LA4551
POWER AMP.
+B4
PRESET GRAPHIC EQUALIZER
VDD
X-BASS
LVREF
RVREF VSS
AVSS
GRAPHIC EQUALIZER
VOLUME
58
55
L
R
R
R
L
L
L
TAPE
VIDEO/AUX
TUNER
CD
Q942
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
UN-SWITCHED
+B1
+
–
SO801
FRONT SPEAKER
TERMINAL
CD-C420H
ONLY
J801
HEADPHONES
VREF
TO CD SECTION
+5.6V
+5.6V
+B1
Q941 Q943
Q952
Q953
IC401
LC75394E
AUDIO PROCESSOR
23
16
33
17
32
19
30
21
28
14 35 56 50 26 27 12 37 11 38 10 3963
24 25 57
CL
DI
CE
25
27
29
30
33
34
35
36
37
38
39
40
42 41434445464748495051 4352535455565859
60
65
70
57
2423222120191817
80
72
71
161514131211
10
9
~
6
1
~
~
~
78
1RX701
3
2
SYSTEM STOP
DO
DRF
DI
DE
CL
RESET
XL702
4.19MHz
AVDD
AVREF VDD
+B2
KEY
SW701
SW725
TO POWER SECTION
+B5
PHM1
RESET
Q708
Q709
ZD701
MEMORY
BACK UP
+B2
3
2
1~
3330 31 32
Q701
+B2
+B1
UNSWITCH
FL701
DISPLAY
~
61
64
~
POWER
T.F
220V
127V
110V
SW961
VOLTAGE
SELECTOR
230-240V
AC POWER
SUPPLY CORD
405W:AC 110/127/
220/230-240V
50/60Hz
420H:AC 230V
50Hz
VOLTAGE
REGULATOR
Q971 D971
D973
~
D961 ~ D964
ZD972
Q707
IC701
IX0191AW
SYSTEM CONTROL
MICROCOMPUTER
TO CD SECTION
TO CD SECTION
TO CD SECTION
TO CD SECTION
+
–
–
+
SO802
REAR SPEAKER
TERMINAL
D965 ~ D968
9
43
6
40 49
64
8
44
5
41
7
45
4
42
CD PUIN
CD SL+
CD SL–
VDD
TAPE SOL
TAPE MOTOR
TAPE MECHASTOP
TAPE FP
T1 RUN PLSE
SWM5
CAM
SWM4
F. A. S
SWM3
FOOL PROOF
L-CH INPUT
R-CH INPUT
T2 RRUN PLSE CD UP DOWN/DISC NO
CD DSP RES
CD T/T OPEN/CLOSE
RESET CD DSP SQOUT CD DSP COIN CD DSP RWC
CD DSP CQCK
CD DSP WRQ T1/T2 TAPE REC TAPE BIAS
14
15
ST FM
Q354
MUTING
+B6
L-CH
R-CH
MONO/ST
Q353
SO401
F962
T2.5A
L 250V
T1.6A
L 250V
F963 CD-C405W
ONLY
CD-C420H
ONLY

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 16 –
Figure 16 WIRING SIDE OF P.W.BOARD (1/4)
A
B
C
D
E
F
G
H
123456
• The numbers 1 to 12 are waveform numbers shown in page 30.
TO TAPE MECHANISM PWB
P18 1-A
CNPM1
CNSM1
RD
1
2
3
4
5
6
7
8
9
10
11
12
WH
GY
WH
GY
WH
GY
WH
TO SENSOR PWB
CNS10
TO TAPE MECHANISM
CNS101
HEADPHONS PWB-A3DISPLAY PWB-A2
P19 7-H
P18 1-H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
CNP101
3
2
1
STOP
XL701
8
1
BIM01
10 987654321
R773 R771
R759
C717
R99
R765
R769
R775
R98
L700
R760
R799
R711
R603
C718
R726 R727
R703
R705 R707 R709 R731
R743
R735
R702
R724
R708
R714
R748 R746
R706
R712
R704
R747 R745
C704
C703
C701
R761
C705
R722 R772
R717 R719 R721 R713 R715 R716 R718 R720
R723 R725
R762
R766 C708
R779
R734 R741
R781
R780 R776
R786
R785
R798
R795
R767
R782
R737
R730
R754
R732
R733
R757 R756
R751 R750
R738
R774
R70
R755
R739
R752
R740
R744
R797
R742
R753
420H
ONLY
R96
R788
C95
R54 R30 R25 R24
R
C51
C46
C54
C56
C55
C57
R77 R78
R154
R141
C58
R152
R137
R135
C129
R71 R72 R79
R153
C139
R139
R145 C131
R131
C119
R125 C127
R123
R121
C117
C123
C113
C111
R101
C101
R701
Q701
C710
C711
FL701
RX701
Q706
D702
R758
C706
Q705
D709
D708
CNP10
C91
C92
R97
IC91
D91
Q91
R95
Q93
C715
R789
R792
R793
R749
C702
R794
L701
D701
Q707
D703
C707
Q708
Q709
ZD701
C709 D704
D706
D705
R763
R777
R836 420H ONLY
R835
C843
C844 C855
R764
R133
R172
R768
R736 D5
D7
R49
SW711
R82
C96
C43
R778
R88
R87
R61
R783
C44
C18
C19
C8
1
C5
2
Q81
R86
L1
C
C59
XL1
C135
Q121
C
C141
C133
C128
C121
L107
405W:JUMPER
420:L107
420H
ONLY
C
1
R
R
1
R109
Q111
Q110
C453 C8
0
C454
R811
R809
IC701
510 15 20 24
25
30
35
4041
45
50
55
60
64
65 70
75
80
IC701
510 15 20 24
25
30
35
4041
45
50
55
60
64
65 70
75
80 1
SW717
POWER
TIMER/SLEEP
SW719
SW718
CLOCK
9
8
7
6
5
4
3
2
1
B
1
2
3
C
E
B
C
E
SW714
TUN-UP
SW715
TUN-DOWN
SW721
MEMORY/SET
123
BCE
PLAY
SW712
SW725
VIDEO/AUX
SW724
TAPE
SW710
UP
SW705
OP/CL
SW706
D-SKIP
SW709
REC/PAUSE
SW713
DOWN
TUN
SW723
CD
SW722
SW704
VOL-UP
SW703
X-BASS
SW702
VOL-DOWN
SW701
RANDOM/DEMO
123 BCE
BCE
123
IC5
1
51015
18
36
35 30 25 2019
ECB
BCE
12
12
5
10
15
1617
20
25
30
32
33 35 4045
48 49
50 55 60
IC2
HEADPHONES
JK801
420H
ONL
Y
65411

– 17 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
Figure 17 WIRING SIDE OF P.W.BOARD (2/4)
78 9 10 11 12
R-CH
SW301
405W ONLY
SPAN SELECTOR
50/9KHz-100/10KHz
SO401
VIDEO/AUX
L-CH
R-CH SO801
SPEAKERS
L-CH
L-CH
SO802
SPEAKERS
R-CH
TO CD MOTOR PWB
CNS3A TO PICKUP UNIT CNS2A TO PICKUP UNIT CNS1A
MAIN PWB-A1
TO POWER PWB
CNS901
CHANISM
01 TO TAPE MECHANISM CNS102
TO TUNER PWB
CNP303
P19 9-C
-H P18 2-H
P19 10-B
1
1
654321
CNP901
L831
C800
L832
F1
T500mA L 250V
CNP101
3
2
1
R825
7
6
5
4
CNP102
3
2
1
R31
R39
R25
R24
R23
R22
R21
C16
C20
R26
R27
R81
R38
R56
R57
C22
R47
R46
R154
R134
R150
R141
R152
R137 C147
C139
3
9
4
5C131
3
1
2
5C127
2
3
R
121 R102
C123
C113
C111 R107
C107
R101
C102
R108 C108
C101 R110
R114
R115
C106
R106
C105
R104
R118
C112 R103
C114 R105
R113
C120 R122
R124 C118 R166
R126 C124
C132 R132 R168
R138 R164
R140 C130R162
C140 R146 R167
R142
R136
R74 C70 R76
C92
R73 C69 R75
R60
R58
R36
R37 C33
C31
R32
C32 R34
R33
C30 R41 C38
R1
C1
R20
C15 R2
C14
R19 C10 R3
R16 R8
R17
R15 R4
R11
C12 R14 R9 R5
R12 C4
R7
R13
C94 R6
R10
R42
C25
R43
1
10987654321
C446
R413
R411
C413
C433
R414
R412
R476 C437
C414
R479
C438
C445
C434
R480
R945
R808 R807
R804
C945
R948
C941
R803
C804 C803
R806 R805
R949
C957
C872
C871
C408
R407
C407
R406
R408
R405
C455
CNP3
C44
CNP2
C21 C7
R29
C13
R28
C11
C17
C18
C19
C81
C52
Q81
C45
C53 C50
R35
C34
C42
C41
R18
C67
R45
C68
Q122
L105
C146
R158
C136
C135
C145
C148
C142
C141
C133 C134
C128
C122
C121
L107 L108
C115 C116
R119 R120
R117
Q107
R112
R111
R109
Q108
Q111
Q110
C453 C809 C810
C454
R811
C812
C814
R812
R810
R809 C813
C831
C830
C829
C808
C806
C823
C801
C820
C802
C824 C828
Q106
R815
C825
Q104
Q103
Q105
C150
C109
R478 R477
Q109
L104
Q126
C151
C153 Q128
R174
Q124
C152
R160 C422
C452 C420
C418
C406
C405 C412
C402 R420
R419 R418
C401 R416
R415
R475
R403
D2
C37 C97
C35
C39
C40
C2
C404
C3
C403
C5
C8
C6
C9
CNP402
D403
CNP1
D404
Q1
C24
R422
C451
R421
C411
C975
R417
R402 R401
C417 R974
C421
C419
C976
ZD972
C423
C425
R976
C427
C435
C439
C961
C440
C443
C444
C436
D402
C424
D962 D964
D961
C426 C442
C428
C441
D401
C944
D967
C956
D968 C955
D966
R946
ZD941
D965
R947
C943
C942
Q943
C827 C805
R943
C948
C947
R951
Q953
R944
Q942 Q941 Q952
R952
C952
ZD951
D951
D941 D942
C953
R953
C954
R843 C850
C846
R982
D963
C852
C848
C962
C851
C847
C853
R844
C849
C845
R977
R981
R978
R845
R975 C971 C972
Q971
R973
D971
D973
D972
C974
C973
R972
ZD971
C410 C409
C5
65432
6587432
5
10 15
18
30 25 2019
5432 B
C
E
ECB
1
5
10
15
20
25
30
32
33 35 4045
48 49
50 55 60 64
IC1
ECB
IC401
1
5
10
15
1617
20
25
30
32
33 35 4045
48 49
50 55 60 64
IC801
E
C
B
E
BCEBCEBCE
C
B
12345678910 11 12 13 14
E
BCE
BCE
BCE
123
BCE
ECB
ECB
ECB
ECB
123
123
BCE
BCE
1
5
10
12 13
15
20
24
IC101
1
5
10
15
1617
20
25
3
0
5
4045
48 49
50 55 60 64
IC2
420H
ONLY
420H ONLY
420H
ONLY
405W:JUMPER
420H:R845
405W:JUMPER 420H:L832
405W:JUMPER 420H:L831
420H ONLY
420H
ONLY
405W:JUMPER
420H:L108
405W:JUMPER
420H:L105
2
3
981126 10
7
P18 5-H P18 5-D P18 4-D

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 18 –
Figure 18 WIRING SIDE OF P.W.BOARD (3/4)
A
B
C
D
E
F
G
H
123456
R
CNPM1
CNPM2
12
1
2
FWM1 FWM2
SWM3
SWM4 F. A. S
F. P. SWM1
T1 CrO2
123456789101112
34
2
1
PHM1
+
-
+
-
PICK UP IN
654321
SLIDE MOTOR
DISC MOTOR
M2
CNP3A
SW4
M1
CNSM1
TO DISPLAY PWB
WH
PK BK
TAPE 1
PLAY BACK HEAD(55)
TAPE 2
ERASE HEAD(56) RECORD/PLAY BACK HEAD(55)
YL
BLWH PK
BK
WH BK
GYBRGY
WH
CNS102
CNS101
YL BL
BK PK
WH
BK
1234567231
WH
BK
RD
CNP102
TO MAIN PWB
TO MAIN PWB
CNP101
TAPE MOTOR
WH
BK
MM1
SWM5
CAM
BK
WH
CNP1
CNS1B
CNS1A
CNS2B
CNS2A
CNS3B
CNS3A
BL YL
PK
WH
BK
RD
WH
GY
WH
GY
WH
GY
WH
RD
WH
GY
WH
GY
WH
BL
PK
WH
YL
BK
CNP2
CNP3
12345678
123456
12345
12345678
123456
12345
TO MAIN PWB TO MAIN PWB
TO MAIN PWB
PICKUP UNIT
CD MOTOR PWB-E
TAPE MECHANISM PWB-D
SOLENOID
SOLM2
405W
ONLY
P16 1-B
P16 6-H P17 8-H P17 7-A
P17 8-A P17 8-A

– 19 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
Figure 19 WIRING SIDE OF P.W.BOARD (4/4)
78 9 10 11 12
F962
T2.5A L 250V
F963
T1.6A L 250V
POWER TRANSFOMER
K952
K951
T.F
T961
C374
C372
C355
C398
C354
C390
R359
R354
C375
D352
R368
R377
R363
R364
C371
R361
R362 R365
R366
C373 C368
R356
R331
C361
C364
C363
C367
R330
C366
C365
C362
C341
C332
C331
D361
D362
C327
C328
D311
D312
C334
R323
R320
X351
IC303
C353
R351
C350 C331
C325
L353
VR351C342
C352
C351
R352
C399 R353 R355
C357
C358
C356
L352
C370
R395
C383
C391
R387
D363
R371
10
9
8
7
6
5
4
3
2
1
R372
C388
L351
R379
R399
C385
11
10
9
8
7
6
5
4
3
2
1
R398
C387
C386 R360
D364
R367
C395
ZD351
C396 C397
R391
R392
R385
R386
R382
R383 R375
R384
R376
R374
R373
ZD352
X352
C382 C381
R380
C392
C394
R381
C393
Q301
C320
FE301
R315
C323 C400
R308
L312
C322
C321
Q361
D368
D367
C384
CF301
R318
R301
1
1
B
C
E
3
2
1
B
C
E
ECB
ECB
3
2
1
23
R310
21
CNP301
L354
R358
R304
R307
R305
Q354
Q353
CF351
1
123 5
10
12 13
15
20
24
BF351
T351
CF302
T302
IC302
CNP303
Q360
R370
+
-
2 3 4 5 6 7 8
12
13
14
15
16
17
18
19
20
21
22
CNS5
2
12 1
CNS10
WH
RD
GY
WH
BR
WH
GY
OR
WH
GY
10
1
BIM5
6
9
8
7
6
5
4
3
2
1
CNP10
TO MAIN PWB
P16 4-B
SW2
MECHA UP SW1
OPEN/CLOSE
M3
T/T UP/DOWN
SW3
DISC NUMBER
POWER PWB-B2 TUNER PWB-B1
SENSOR PWB-F
SOLM1
SOLENOID
CNP901
TO MAIN PWB
CNP402
TO MAIN PWB
RD
WH
GY
WH
GY
WH
CNS901
AC POWER
SUPPRY CORD
(216)
CD-C405W:
AC 110/127/220/230-240V
50/60 Hz
CD-C420H:
AC 230V 50 Hz
SW961
VOLTAGE
REGURATOR
FM AM
AM LOOP
SO301
FM 750OHMS
BI901
1
1
2
3
4
5
6
6
405W
ONLY
405W
ONLY
420H
ONLY
405W
ONLY
SW961
127V
220V
110V
230-240V
420H
ONLY
405W
ONLY
420H
ONLY
405W
ONLY
420H
ONLY
420H
ONLY
420H
ONLY
405W:JUMPER 420H:R315
420H
ONLY
420H
ONLY
P17 11-G
P17 9-A