Sharp CDC-405-W, CDC-420-H, CPC-405, CPC-410, CPSR-421 Service manual

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

MEMORY ST

kHz MHz

1 2 3

REC

SLEEP

X-BASS

11 12

17 18 19

21 22

2627 28 29 30

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

5 6

– 3 –

CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421

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

3 4

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

3 4

16 17

– 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

SETTING THE CLOCK

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

Press the CLOCK button.

Within 3 seconds, press the MEMORY/SET button.

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)

Press the MEMORY/SET button.

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".

Press the MEMORY/SET button.

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".

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.

Press the MEMORY/SET button.

Perform steps 6 - 9 above.

When the ON/STAND-BY switch is set to ON.

Press the CLOCK button.

Within 3 seconds, press the MEMORY/SET button.

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:

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

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.)

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

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.

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 ) x1 ø3 x12mm

Top Cabinet

Side Panel (Right)

Side Panel (Left)

( 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 –

+ 14 hidden pages