CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
SERVICE MANUAL
CD-C405W
CD-C420H
No. S5733CDC405W/
Illustration: CD-C405W/CP-C405
CP-C405
CP-C410
CP-SR421
CD-C405W and CP-C405 constitute CD-C405W.
CD-C420H and CP-C410 and CP-SR421 constitute CDC405W.
Illustration: CD-C420H/CP-C410/CP-SR401
CONTENTS
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
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
Page
SHARP CORPORATION
– 1 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
CD-C405W/CD-C420H
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)
CD-C405
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
CP-C410
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
CP-SR421
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
Specifications for this model are subject to change without prior
notice.
Cassette deck section
Frequency response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 55 dB (TAPE 1, playback)
Wow and flutter: 0.15 % (WRMS)
50 dB (TAPE 2, recording/playback)
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.
– 2 –
NAMES OF PARTS
1
MEMORY ST
kHz
MHz
1 2 3
REC
SLEEP
X-BASS
2
3
4
5
6
7
8
9
10
11
12
13
15
17
18
19
20
21
22
23
24
25
2627 28 29 30
14
16
31
32
CD-C405W/CD-C420H
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:
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
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
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
CD-C405W
1
2
3
5
6
7
– 3 –
4
8
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
6
7
9
8
10
11
12
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
CP-C410
Speaker Section
6. Full Range Speaker
7. Speaker Wire
CP-SR421
Speaker Section
8. Full Range Speaker
9. Speaker Wire
1
2
3
4
5
CP-C405
Speaker Section
10. Super Tweeter
11. Woofer
12. Speaker Wire
CD-C405W/CD-C420H
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:
13
14
15
19
21
1
2
5
6
3
4
10
98
7
11
12
16
17
18
20
22
– 4 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
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" → Th e 24-hour disp lay 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.2Press 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.
OPERATION MANUAL
– 5 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
< A >
LOCK
LEVER
( 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
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 be
removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
CD-C405W/CD-C420H
STEP
REMOVAL PROCEDURE
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
FIGURE
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.
CD-C405W/CD-C420H
CD Player Unit
( D1 ) x5
ø3 x12mm
Push
Hook
( C2 ) x1
Driver
( D2 ) x1
ø3 x8mm
Figure 6-1
CD Tray Cover
Back Board
Figure 6-2
Illustration: CD-C405W
Hook
( C1) x3
Hook
( C2 ) x1
Push
Driver
( C3 ) x1
( C3 ) x3
CP-C410
STEP REMOVAL PROCEDURE FIGURE
1 Speaker 1. Front panel............. (A1) x1 7-5
2. Screw ..................... (A2) x4 7-6
CP-SR421
STEP
STEP REMOVAL
REMOVAL PROCEDURE FIGURE
1 Top cabinet 1. Screw ..................... (B1) x6 8-1
CP-C405
1 Speaker 1. Front panel............. (C1) x1 8-2
PROCEDURE
2. Screw ..................... (C2) x4 8-3
FIGURE
Figure 6-3
– 6 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
( K1 ) x4
ø3 x14mm
( L1 ) x1
ø2.6 x10mm
CD Changer
Mechanism
CD Mechanism
Shift Lever
CD Player Base
Front Panel
(A1) x1
Speaker Box
Screw
driver
Driver should be pried
away from speaker Box.
Direction of handle
( E1 ) x9
ø3 x8mm
( E1 ) x1
ø3 x8mm
( E2 ) x2
( E1 ) x1
ø3 x10mm
( E2 ) x1
( E1 ) x1
ø3 x12mm
Hook
( F2 ) x1
Figure 7-1
( E2 ) x1
Front Panel
Main PWB
Front Panel
Display PWB
( E2 ) x1
Tape
Mechanism
Care 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 7-4
CP-C410
( G1 ) x6
ø3 x10mm
( J1 ) x1
ø3 x10mm
( J2 ) x1
Power Supply
PWB
( H2 ) x1
( F1 ) x2
ø3 x10mm
Figure 7-2
( H1 ) x1
ø3 x10mm
Open
Tape
Mechanism
Hook
( F2 ) x1
Cassette
Holder
Turntable
Disc Tray
Figure 7-5
Speaker Box
Woofer
CD Player Unit
( J2 ) x1
Figure 7-3
( J1 ) x1
ø3 x10mm
(A2) x4
4 x12mm
Figure 7-6
– 7 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
CP-SR421
(B1)x2
ø3x20mm
(B1)x2
ø3x20mm
Figure 8-1
Woofer
(B1)x2
ø3x20mm
CP-C405
Front Panel
(C1) x1
Screw
driver
Direction of handle
Figure 8-2
Speaker Box
Driver should be pried
away from speaker Box.
Speaker Box
(C2) x4
4 x35mm
Woofer
Figure 8-3
– 8 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
( C1 ) x2
2.6 x6mm
( C2 ) x1
( C3 ) x1
( C4 ) x1
CD Mechanism
Pickup
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.
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.
Loading Motor
Turntable
Up/Down Motor
( A1 ) x2
ø2 x5mm
Figure 9-1
( B1 ) x2
ø2 x5mm
How to remove the pickup (See Fig. 9-3)
1. Remove the screws (C1) x 2 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
Figure 9-3
– 9 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
ADJUSTMENT
MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2412 Tape 1: Over 80 g
• Torque Check
Torque Meter
Tape 1
Play: TW-2111 30 to 60 g. cm 30 to 60 g.cm
Fast forward: TW-2231 — 60 to 120 g.cm
Rewind: TW-2231 — 60 to 120 g.cm
• Tape Speed
Test Tape
Tape MTT-111 Volume in 3,000 ± Speaker
speed motor. 30 Hz terminal
Adjusting
Point
TAPE MECHANISM
Volume in motor
Specified Value
Tape 2: Over 80 g
Specified Value
Specified
Value
MM 1
Motor
Tape 2
Instrument
Connection
(Load
resistance:
8 ohms)
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF (CD-C405W)
Signal generator: 400 Hz, 30%, AM modulated
Test Stage
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
*1. Input: Antenna, Output: TP302
*2. Input: Input is not connected, Output: TP301
• AM IF/RF (CD-C420H)
Signal generator: 400 Hz, 30%, AM modulated
Test Stage
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
*1. Input: Antenna, Output: TP302
*2. Input: Input is not connected, Output: TP301
• 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.
Preset No.
11 ~ 40
Frequency Frequency
Display
Setting/
Adjusting
Instrument
Connection
Parts
Frequency
Frequency
Display
Setting/
Adjusting
Instrument
Connection
Parts
FM
Preset No.
AM
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
TUNER PWB
AM IF
IC303
T351
TP302
R331
AM BAND
COVERAGE fL
VR351
FM MUTE
LEVEL
T302
TP301
FE301
L311
AM TRACKING
fL
Figure 10-1 ADJUSTMENT POINTS
CD-C420H
SO301
ANTENNA
TERMINAL
CNP301
S0301
ANTENNA
TERMINAL
CD-C405W
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev. FM modulated.
Frequency
Frequency
Display
98.00 MHz 98.00 MHz VR351 *1 Input: SO301
(25 dBµV) Output: Speaker
Adjusting
Parts
*1. Adjust so that an output signal appears
– 10 –
Instrument
Connection
Terminal
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
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. 11-1)
OPEN/CLOSE operation is manual operation.
The pickup can be moved by using the (
<MEMORY>
LASER ON
<MEMORY>
Tracking on the spot.
SERVO OFF PLAY
) or ( ) key.
<MEMORY>
Tracking on the spot.
SERVO ON PLAY
IL is not performed.
<STOP>
STOP
<PLAY> key input Press <STOP> key.
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
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
1 2 3
Canceling method - POWER OFF
Figure 11-1
CD SECTION
Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary
to readjust it.
Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.
• Automatic adjustment item
1. Focus offset (Fig. 11-2)
2. Tracking offset (Fig. 11-3)
3. E/F balance (tracking error balance) (Fig. 11-4)
4. RF level AGC function (HF level: constant)
5. RF level automatic follow-up of the tracking gain
This automatic adjustment is performed each time a disc is changed. Therefore,
each disc is played back using the optimal settings.
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 11-2
200 ms
1V/diV
IC 1 15
200 ms
1V/diV
IC 1 7
TO
TE
TRACKING/
ERROR
BARANCE
1
ADJUST
2
Figure 11-4
– 11 –
Figure 11-3
Enlarged
View
TRACKING
OFF-SET
ADJUST
1
2
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
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
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 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.
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
FRONT
ECB
(S)(G)(D)
(1) (2) (3)
2SA1015 GR
2SB561 C
2SC1845 F
2SC380 O
KRA102 M
KRA109 M
KRC102 M
FRONT
VIEW
VIEW
BCE
(D)(G)(S)
(3) (2) (1)
KRC104 M
KRC107 M
KTA1266 GR
KTA1273 Y
KTC3199 GR
KTC3203 Y
Figure 12 TYPES OF TRANSISTOR
– 12 –
2SD2012 Y
1
2
3
4
5
98
6
7
20
12
13
242530
31
3222
34
35
36
10 11
272628
29
PU-IN SW
XL1
XIN
LD0
FIN2
JP–
CV+
SLC
SL1
FIN1EF
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
9
5
+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
101220
324043
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
Figure 13 BLOCK DIAGRAM (1/3)
– 13 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
E
N
/
O
ANTENNA
TERMINAL
FM/AM
ANTENNA
TERMINAL
420H ONLY
SO301
AM LOOP
ANTENNA
L311
FM
AM
405W ONLY
420H ONLY
BALUN
AM
TRACKING
8
FE301
FM FRONT END
420H: S0003AW
405W: S0005AW
6
7
420H ONLY
T302
AM AMT.
2
1
MIX
OUT
AM OSC OUT
+B4
AM IF
T351
3
REG
AFC
AM RF IN
AM OSC IN
20 12 22 15 16 11
7
FM
Q361
+B6
CF351
17
8
4
9
5
FM
DET
X352
4.5MHz
OSC
10
ST
FM/AM IF
6
7
SD
STEREO
AM IN
IC302
LC72131
1021222324
IF OUT
1
PLL CONTROLLER
420H ONLY
X351
IC303
LA1832
FM IN
3
L354
VOLTAGE
REGURATER
+B4
CEDICL
4
6
5
21
131816
12
FM/AM
DO
13
17
MONO
14
L-CH
15
R-CH
MUTI
+B6
ST
FM
420H ONLY
1
5
42
3
VCC
AM BAND
COVERAGE
FM IF
CF301
Q301
CF302
VR351
FM MUTE LEVEL
FM OSC
SWITCHING
FM IF IN
VT
Q360
+B4
FROM CD SECTION
CD-C405W
BLOCKMAIN
TAPE 1
PB HEAD
L-CH
R-CH
TAPE 2
REC/PB
HEAD
L-CH
R-CH
ERASE
HEAD
P.B
REC
AC BIAS
SWITCHING
Q103
~
Q106
BIAS
OCS
Q107
Q108
L (T1)
R (T1)
L (T2)
R (T2)
R NF
POP REDUCE
L REC
R REC
SWITCHING
Q128
L104
PLAYBACK&RECORD/
PLAYBACK AMP.
IC101
AN7345K
1
P. B.
24
2
23
3
L NF
4
H/N
T1/T2
6
REC
9
16
14
REF
12
Q109 Q110
SWITCHING
T1/T2
SWITCHING
+B4
13
P. B
L
L
4
R
21
R
5
20
L
REC
7
18
R
8
L NF
17
R NF
ALC
10
19
Q111
SWITCHING BIAS
Q124
Q121
Q122
MUTING
Q126
REC
T1/T2
BIAS
S
VIDEO/AUX
TAP
TUN
CD
Figure 14 BLOCK DIAGRAM (2/3)
– 14 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
14
15
+B6
ST FM
MONO/ST
L-CH
R-CH
MUTING
Q353
Q354
FL701
DISPLAY
2
1~
3
SWM3
FOOL PROOF
SWM4
F. A. S
SWM5
CAM
6
1
80
72
71
70
65
64
61
3330 31 32
Q701
TAPE BIAS
9
8
7
~
~
SYSTEM CONTROL
~
~
MICROCOMPUTER
60
57
TAPE MECHASTOP
CD DSP WRQ
T1/T2
TAPE REC
10
IX0191AW
TAPE FP
T1 RUN PLSE
+B2
CD DSP SQOUT
CD DSP COIN
CD DSP RWC
CD DSP CQCK
161514131211
IC701
VDD
TAPE SOL
TAPE MOTOR
+B2
CD DSP RES
RESET
CD T/T OPEN/CLOSE
1
RX701
3
MEMORY
BACK UP
CD UP DOWN/DISC NO
POWER
2
UNSWITCH
+B1
L-CH INPUT
T2 RRUN PLSE
R-CH INPUT
2423222120191817
25
~
27
29
30
33
34
35
36
37
38
39
40
42
41434445464748495051 4352535455565859
CD SL–
CD SL+
CD PUIN
CL
DE
DI
DO
DRF
AVDD
AVREF
VDD
+B2
XL702
4.19MHz
SYSTEM STOP
RESET
RESET
Q707
KEY
SW701
SW725
~
TO CD SECTION
TO CD SECTION
TO POWER SECTION
+B5
PHM1
TO CD SECTION
TO CD SECTION
Q708
Q709
ZD701
VIDEO/AUX
SO401
TAPE
TUNER
CD
L
R
L
R
L
R
L
R
16
33
17
32
19
30
21
28
CLDICE
23
24 25 57
TO CD SECTION
VDD
AUDIO PROCESSOR
LVREF
VREF
14 35 56 50 26 27 12 37 11 38 10 3963
+B1
+B1
+B4
+B5
IC401
LC75394E
GRAPHIC EQUALIZER
RVREF
VSS
AVSS
UN-SWITCHED
+5.6V
+5.6V
+12V (ANALOG)
+12V (MOTOR)
PRESET GRAPHIC EQUALIZER
+B4
8445
VOLTAGE
REGULATOR
Q952
Q953
VOLTAGE
REGULATOR
Q942
Q941
VOLTAGE
REGULATOR
41
VOLUME
X-BASS
42
7454
40
49
9436
64
OUT
58
L
55
R
Q943
ZD972
LA4551
POWER AMP.
13
R-IN
L-IN
9
7
VCC
14
NF
8
4
3
D965 ~ D968
D961 ~ D964
Q971
VOLTAGE
REGULATOR
IC801
11
MUTE
L-OUT
2
5
D971
D973
R-OUT
F962
T2.5A
L 250V
~
F963
T1.6A
L 250V
T.F
12
CD-C420H
ONLY
230-240V
220V
127V
110V
VOLTAGE
SELECTOR
CD-C405W
ONLY
J801
HEADPHONES
CD-C420H
ONLY
SW961
+
–
SO801
FRONT SPEAKER
TERMINAL
+
–
–
+
SO802
REAR SPEAKER
TERMINAL
AC POWER
SUPPLY CORD
405W:AC 110/127/
220/230-240V
50/60Hz
420H:AC 230V
50Hz
Figure 15 BLOCK DIAGRAM (3/3)
– 15 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
R
R152
1
2
C
C
1
R
1
0
Y
A
P19 7-H
TO SENSOR PWB
CNS10
R61
C59
C51
C43
R82
C54
C56
D7
D5
420H
ONLY
405W:JUMPER
420:L107
C855
C843
C844
420H ONLY
C55
Q121
36
1
R54
R88
R86
R87
32
33
XL1
C57
BCE
R135
C129
R153
R835
C95
C96
C46
R70
R77
R78
R49
C58
R71
R72
R79
R172
R133
R836
D709
SW717
POWER
B
TO TAPE MECHANISM PWB
CNPM1
P18 1-A
CNSM1
RD
1
2
3
WH
4
GY
5
WH
6
7
GY
8
9
WH
10
GY
11
WH
12
1
8
C
1
2
3
4
5
6
7
8
9
10
C711
C710
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
D
E
F
SW704
G
VOL-UP
R771
BIM01
C706
D702
FL701
R773
R765
R759
R711
R706
64
64
65
65
Q701
123
R701
R767
E
C
B
R743
E
C
B
R603
R708
SW703
X-BASS
R712
R717
SW718
CLOCK
Q705
R714
60
60
70
70
R758
Q706
R702
R719
55
55
R799
75
75
R721
80
80 1
1
2
3
R760
R704
50
50
IC701
IC701
R713
R769
TIMER/SLEEP
SW719
RX701
R726
R727
R724
4041
4041
45
45
35
35
15
15
10
10
5
5
R715
R716
SW702
VOL-DOWN
D708
C717
R775
C715
R705
R707
R709
R703
R735
R748
R746
R747
R745
C704
30
30
25
25
24
24
20
20
R722
D701
R723
R725
R718
R720
R734
R741
Q709
R785
C709
SW701
RANDOM/DEMO
R731
SW724
TAPE
R761
R762
R766
R779
R781
R780
BCE
R798
R795
C718
C703
XL701
R763
R789
L701
C92
SW722
SW723
C702
C91
CD
TUN
C701
C705
Q707
Q708
123
BCE
R776
R786
R777
10
R99
9
8
7
6
5
4
3
2
1
R792
R793
R794
SW725
VIDEO/AUX
ZD701
D704
D706
D705
987654321
CNP10
R98
R97
D91
BCE
Q91
R96
R95
Q93
IC91
420H
ONLY
R753
R742
R797
R744
R740
R752
R739
R755
R738
R750
R751
R756
R757
R733
R732
R754
R730
R737
R772
D703
C707
C708
REC/PAUSE
SW721
MEMORY/SET
123
R768
SW709
JK801
HEADPHONES
PLAY
SW712
R736
R749
R783
R778
R764
L700
SW713
DOWN
SW710
UP
SW715
TUN-DOWN
SW714
TUN-UP
STOP
SW711
R774
SW706
D-SKIP
SW705
OP/CL
R788
R782
C44
35 30 25 20
IC5
51015
R30
R25
R24
L1
15
20
25
30
IC2
35
40
45
50
48
R154
R141
C135
R137
C141
C139
R139
C133
R145
C131
R131
C128
R125
C127
C121
C119
R123
L107
R121
C123
C117
R101
C101
Q111
Q110
C453
C454
R811
R809
ECB
Q81
1617
10
55
49
C111
C113
1
2
CNP101
3
65411
420H
ONL
19
18
C18
C19
C5
60
12
12
C8
5
C
R
R109
C8
H
• The numbers 1 to 12 are waveform numbers shown in page 30.
1
23456
Figure 16 WIRING SIDE OF P.W.BOARD (1/4)
– 16 –
HEADPHONS PWB-A3DISPLAY PWB-A2
TO TAPE MECHANISM
CNS101
P18 1-H
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
R25
R154
C44
30 25 20
C5
10 15
R24
20
25
0
IC2
40
45
48
R141
C135
C141
C139
9
C133
5
1
C128
5
C127
C121
3
L107
121
R101
Q111
Q110
C453
C454
1617
15
50
49
R137
C131
C101
ECB
Q81
C113
CNP101
10
55
C111
1
2
3
19
18
C18
C19
C81
C52
5
60 64
420H
ONLY
123
123
C809
C115
R117
R109
TO CD MOTOR PWB
7
R31
R39
C11
C17
R23
R22
R21
C16
C20
R26
R27
R81
C53
R38
R56
R57
1
R58
R60
C22
R47
R46
R45
R134
R150
C148
C147
R152
12 13
10
15
IC101
20
5
1
R119
R102
R107
BCE
Q107
C107
C102
C108
R108
BCE
Q108
R110
F1
T500mA L 250V
R35
R19
R20
C15
C32
C114
C112
R33
R32
C145
P18 5-H
CNS3A
R29
R28
C12
32
33
C30
C42
C41
R18
C92
Q122
C146
C132
C122
24
7
6
5
4
CNP102
3
2
1
R114
C810
1
R10
C21
C94
R12
R17
R34
C31
R37
BCE
C142
C140
R140
L108
R120
R115
R142
C134
R14
R118
C14
30
35
C67
R136
C68
R126
R124
C120
C106
65432
CNP3
6587432
CNP2
C7
R13
C13
R15
R16
15
20
25
IC1
40
45
50
48
49
C50
C33
R36
C34
C136
R146
C130
R138
R132
C124
C118
R122
C116
Q103
Q104
R112
C105
R111
TO PICKUP UNIT
1
R6
C9
R7
R9
R11
R8
C10
10
5
60 64
55
R41
C45
R73
R74
R158
420H ONLY
BCE
Q124
R162
R164
123
ECB
ECB
ECB
ECB
Q106
P18 5-D P18 4-D
CNS2A
TO PICKUP UNIT
CNS1A
10
C25
5432
CNP1
C4
C6
R5
R4
C5
C8
R3
R2
C3
C1
1
C2
R1
C40
C38
C39
C35
C37
D2
C69
R75
C70
R76
L105
C153
BCE
Q109
R113
R105
Q105
R103
R104
R106
R825
C820
C97
C401
C402
C405
C406
R476
405W:JUMPER
420H:L105
R160
C152
R167
R174
BCE
Q128
C151
R168
Q126
L104
R166
C109
C150
405W:JUMPER
420H:L108
C824
420H
ONLY
C823
C829
C801
123456789
C830
C802
1
R806
C831
R475
R415
R416
R419
R420
C806
R43
C452
R42
R414
R412
C414
C825
R808
R804
C804
E
C
B
C404
C828
P19 9-C
TO TUNER PWB
CNP303
C24
Q1
D404
D403
CNP402
10987654321
C446
C403
R402
R403
R418
32
33
C412
C418
C420
C422
C424
C426
C428
R478
R477
R815
R807
R803
C805
C803
C808
R805
10 11 12 13 14
IC801
30
35
D965
R401
25
40
C827
Q942
R417
20
IC401
45
48
C442
C441
D967
D968
D966
1617
15
50
C440
49
R943
10
55
C438
C436
C411
C945
5
60
C434
R480
R413
R411
C413
R948
C419
C956
C955
Q943
C948
C425
1
MAIN PWB-A1
2
981126
3
405W ONLY
SW301
SPAN SELECTOR
50/9KHz-100/10KHz
D971
C972
420H
R981
ONLY
R844
L831
420H:L831
L832
R406
C408
C849
C851
C852
C850
R843
R407
R408
C407
C848
C455
C845
C853
C847
C871
C872
R982
C846
C800
405W:JUMPER
420H:L832
VIDEO/AUX
420H ONLY
SO802
SPEAKERS
R-CH
SO401
L-CH
R-CH
L-CH
L-CH
R-CH
SO801
SPEAKERS
C410
R422
C451
R421
C417
C421
C423
C427
C433
64
C435
C437
C439
R479
C445
C444
C443
D402
D401
R946
ZD941
R947
D942
Q941
D941
R944
C941
R945
R949
C942
C947
B
C
E
C976
C961
R951
Q952
ZD972
R976
D962
B
C
E
R974
C943
Q953
C975
R975
C962
C944
R977
D964
BCEBCEBCE
R978
C974
654321
D961
C409
ZD971
C973
R973
ECB
Q971
C971
CNP901
405W:JUMPER
420H:R845
D963
R953
C953
C954
C957
R952
ZD951
C952
D951
R972
D973
R405
D972
R845
405W:JUMPER
R811
R809
CHANISM
01
-H
7
C813
C814
R812
R810
C812
TO TAPE MECHANISM
CNS102
P18 2-H
TO POWER PWB
CNS901
P19 10-B
8 9 10 11 12
Figure 17 WIRING SIDE OF P.W.BOARD (2/4)
– 17 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
P16 1-B
TO DISPLAY PWB
CNSM1
A
R
123456789101112
CNPM1
SWM4
B
F. A. S
PICKUP UNIT
YL
PKWHBK
BK
BL
YL
12345678
GY
RD
WH
GY
GY
WH
WH
12345678
CNP2
P17 8-A
CNS2B
WH
CNS2A
M1
DISC MOTOR
12345
CNS1B
BL
PK
2
SWM1
T1 CrO
405W
ONLY
C
SWM3
F. P.
D
12
FWM2
1
2
FWM1
CNPM2
SOLENOID
SOLM2
WH
BK
BK
WH
CNS1A
SWM5
CAM
WH
12345
CNP1
TO MAIN PWB TO MAIN PWB
P17 8-A
-
34
E
PLAY BACK HEAD(55)
F
PHM1
1
2
TAPE MOTOR
TAPE MECHANISM PWB-D
TAPE 1
ERASE HEAD(56) RECORD/PLAY BACK HEAD(55)
WH
BK
PK
WH BK
MM1
+
M2
SLIDE MOTOR
TAPE 2
BK
YL
BL
PK
WH
GYBRGY
CD MOTOR PWB-E
+
SW4
PICK UP IN
-
CNP3A
123456
654321
CNS3B
G
YL
BK
RD
WH
TO MAIN PWB
CNP101
P16 6-H
CNS101
BL
BK
PKWHBK
TO MAIN PWB
CNP102
P17 8-H
1234567231
WH
CNS102
RD
GY
GY
WH
WH
123456
CNP3
TO MAIN PWB
P17 7-A
WH
CNS3A
H
1
23456
Figure 18 WIRING SIDE OF P.W.BOARD (3/4)
– 18 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
7
8 9 10 11 12
POWER PWB-B2
AC POWER
SUPPRY CORD
(216)
CD-C405W:
AC 110/127/220/230-240V
50/60 Hz
CD-C420H:
AC 230V 50 Hz
T.F
K952
K951
T961
POWER TRANSFOMER
405W
ONLY
SW961
127V
220V
405W
ONLY
F963
T1.6A L 250V
F962
T2.5A L 250V
405W
ONLY
230-240V
SW961
VOLTAGE
REGURATOR
110V
420H
ONLY
6
BI901
1
TO MAIN PWB
WH
GY
WH
GY
WH
RD
CNP402
P17 9-A
CNS901
6
5
4
3
2
1
TO MAIN PWB
CNP901
P17 11-G
10
9
8
7
6
5
4
CNP303
3
2
R371
1
R372
R374
Q361
C384
D368
D367
420H
R301
ONLY
CF301
405W:JUMPER
420H:R315
TUNER PWB-B1
R375
R370
R383
B
C
R385
E
R386
Q360
C391
R387
D363
R384
R376
11
10
9
8
7
6
R373
5
IC302
4
ZD352
3
2
1
3
2
C382
1
X352
420H
ONLY
R305
R307
1
23
R304
R318
R315
1
2 3 4 5 6 7 8
FE301
R310
C383
R360
12
13
14
15
16
17
18
19
20
21
22
B
C
E
C320
R382
C381
R392
C386
R398
C385
D364
C387
R399
R379
C390
Q301
C323
C393
C392
L312
C400
R391
R395
R381
C397
C370
C394
C396
L352
R308
R367
C395
L351
R380
C322
C388
C321
C355
123
BF351
T351
C375
420H
ONLY
ZD351
R359
C356
VR351
C398
D352
R354
C358
CF351
C354
R352
C342
D311
R368
R363
R377
C357
R355
12 13
R353
C399
1
C351
C350
3
C352
2
CF302
1
L353
C334
R323
R320
D312
CNP301
21
R364
C373
10
5
R351
T302
420H
ONLY
Q353
ECB
R361
C371
15
IC303
20
C353
C325
R358
C361
24
C331
D361
R365
ECB
R362
C368
X351
C365
L354
Q354
C367
C362
C332
D362
C374
C341
C372
405W
ONLY
R331
C327
C366
C363
C364
420H
ONLY
R366
R356
R330
C331
C328
TO MAIN PWB
CNP10
P16 4-B
FM AM
420H
ONLY
SO301
FM 750OHMS
CNS10
10
9
8
7
6
5
4
3
2
1
MECHA UP
OR
BR
WH
GY
WH
GY
WH
GY
WH
RD
SW2
2
1
CNS5
SW1
OPEN/CLOSE
1
BIM5
6
SW3
DISC NUMBER
2
1
SENSOR PWB-F
M3
T/T UP/DOWN
-
+
SOLENOID
SOLM1
Figure 19 WIRING SIDE OF P.W.BOARD (4/4)
– 19 –
405W
ONLY
AM LOOP
420H
ONLY
Loading...