Sharp CDC-401-W, CPC-402 Service manual

CD-C401W,CP-C402

SERVICE MANUAL

No. S7751CDC401W/

CD-C401W

CP-C402

CD-C401W and CP-C402 constitute CD-C401W.

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

CONTENTS
	Page
SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................	2
VOLTAGE SELECTOR .....................................................................................................................................................	2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................	2
SPECIFICATIONS ............................................................................................................................................................	3
NAMES OF PARTS ..........................................................................................................................................................	4
OPERATION MANUAL .....................................................................................................................................................	6
DISASSEMBLY .................................................................................................................................................................	7
REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................	9
ADJUSTMENT ................................................................................................................................................................	10
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................	12
TYPE OF TRANSISTER .................................................................................................................................................	12
BLOCK DIAGRAM ..........................................................................................................................................................	13
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .............................................................................................	16
VOLTAGE .......................................................................................................................................................................	28
WAVEFORMS OF CD CIRCUIT .....................................................................................................................................	29
TROUBLESHOOTING (CD SECTION) ..........................................................................................................................	30
FUNCTION TABLE OF IC ..............................................................................................................................................	34
DISPLAY PANEL ............................................................................................................................................................	40
REPLACEMENT PARTS LIST/EXPLODED VIEW

SHARP CORPORATION

– 1 –

CD-C401W,CP-C402

SAFETY PRECAUTION FOR

SERVICE MANUAL

Precaution to be taken when replacing and servicing the Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.

(1)When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.

(2)The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping.

(3)No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.

(4)Under no circumstances look directly into the Pickup Lens at any time.

(5)CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Laser Diode Properties Material: GaAIAs Wavelength: 780 nm

Emission Duration: continuous Laser Output: max. 0.6 mW

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.

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 the correct voltage figure is displayed in the window next to the adjisument screw.

QACCB0004AW00

92LCoRD577B

QACCE0007AW00

92LPLUG027

92LPLUG155A

92LCoRDZ1652A

Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

– 2 –

CD-C401W,CP-C402

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

SPECIFICATIONS

CD-C401W

General

Power source:	AC 110/127/220/230-240 V,
	50/60 Hz
Power consumption:	80 W
Dimensions:	Width; 270 mm (10-5/8")
	Height; 280 mm (11-1/16")
	Depth; 332.5 mm (13-1/8")
Weight:	4.2 kg (9.2 Ibs.)

Amplifier section

Output power:	PMPO; 160 W
	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
	Headphones; 16 - 50 ohms
	(recommended; 32 ohms)

Tuner section

Frequency range:	FM; 88 - 108 MHz
	AM; 531- 1,602 kHz

Cassette deck section

Frequency response:	50 - 14,000 Hz (Normal tape)
Signal/noise ratio:	50 dB (TAPE 1, recording/
	playback)
	55 dB (TAPE 2, playback)
Wow and flutter:	0.15 % (WRMS)

Compact disc player section

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)
CP-C402
Speaker section
Type:		10 cm (4") full range speaker
Maximum input power: 20 W
Impedance:		8 ohms
Dimensions:		Width; 170 mm (6-11/16")
		Height; 280 mm (11")
		Depth; 151 mm (5-15/16")
Weight:		1.4 kg (3.1 Ibs.)/each

Specifications for this model are subject to change without prior notice.

– 3 –

CD-C401W,CP-C402

		NAMES OF PARTS
		1
	CD-C401W
	Front Panel
1. Disc Tray

2.CD Play Indicator:

3.Disc Number Indicators

4.FM Stereo Mode Indicator: ST

5.Extra Bass Indicator: X-BASS

6.Memory Indicator

7.CD Pause Indicator:

8.CD Repeat Indicator:

9.FM Stereo Indicator:

10.Function/CD Track/CD Counter/Frequency/Preset Channel/Volume Indicator

11.On/Stand-by Switch

12.Memory Set Button

13.Clock/Timer Button

14.Extra Bass Button: X-BASS

15.Volume Up/Down Buttons:

16.Function Selector Button

17.Band Selector Button

18.Tuning Up/Down Buttons:

19.Track Down/Review/Preset Down Button:

20.Play/Repeat Button:

21.Stop Button:

22.Track Up/Cue/Preset Up Button:

23.Disc Skip Button

24.Open/Close Button:

25.Headphone Socket

26.(TAPE 1) Cassette Compartment

27.(TAPE 2) Cassette Compartment

28.(TAPE 1) Record Button:

29.(TAPE 1) Play Button:

30.(TAPE 1) Rewind Button:

31.(TAPE 1) Fast Forward Button:

32.(TAPE 1) Stop/Eject Button: /

33.(TAPE 2) Play Button:

34.(TAPE 2) Stop/Eject Button: /

2

3

4

5

6

1	2	3	ST X-BASS	MEMORY
7

8

9

10

11 12		13 14 15
16
17
18 19 20	21	22 23 24 25

26	27
28 29 3031 32	33	34

– 4 –

CD-C401W

Rear Panel

1.AC Power Input Socket

2.AC Voltage Selector

3.Speaker Terminals

4.AM Loop Aerial Input Socket

5.Aerial Earth Terminal

6.FM 75 ohms Aerial Socket

7.Span Selector Switch

CP-C402

Speaker Section

8.Bass Reflex Duct

9.Speaker Wire

CD-C401W

Remote Control

1. Remote Control Transmitter LED

CD Control section

2.Stop Button:

3.(CD) Track Down/Review Button: (TUNER) Preset Down Button:

4.(CD) Track Up/Cue Button: (TUNER) Preset Up Button:

5.Play/Repeat Button:

6.Disc Skip Button

7.Pause Button:

8.Memory Button

9.Clear Button

Common section

10.Extra Bass Button: X-BASS

11.Function Selector Buttons

12.Power Button

13.Volume Up/Down Buttons:

	CD-C401W,CP-C402
	4
1	5
2	6
3	7

9

8
	1
	5
2	6
3	7
4
8	9 10
	11

12 13

– 5 –

– 6 –

SETTING THE CLOCK

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

ON/STAND-BY

MEMORY/

SET

CLOCK/

TIMER

TUNING ()

1

2

3

AM 12:00 AM 0:00 0:00

4

5

6

7

8

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

The display brightness will decrease in stand-by mode.

2 Press the MEMORY/SET button.

3 Press the TUNING ( or ) button to select the time display
mode.
"AM 12:00"	→ The 12-hour display will appear.
	(AM 12:00 - PM 11:59)
"AM 0:00"	→ The 12-hour display will appear.
	(AM 0:00 - PM 11:59)
"0:00"	→ The 24-hour display will appear.
	(0:00 - 23:59)

	Note that this can only be set when the unit is first installed
4	or it has been reset (see below).
	Press the MEMORY/SET button.
5	Press the TUNING (	or	) button to adjust the hour.
	Press the TUNING 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-
6	matically to "PM".
	Press the MEMORY/SET button.
7	Press the TUNING (	or	) button to adjust the minutes.
	Press the button for at least 0.5 seconds to advance continu-
	ously.
	The hour setting will not advance even if minutes advance
8	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 resumed, the clock display will flash on and off to indicate that the time must be reset.

If this happens, follow steps 1 and 4 - 8 in the procedure described above.

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 5 - 8 above.

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

1 Press the CLOCK/TIMER button.

2 Within 3 seconds, press the MEMORY/SET button.

3 Perform steps 5 - 8 above.

To change the time display mode:

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

2 Press and hold down the button, and then hold down the ON/STAND-BY switch for at least 1 second.

(Refer to RESETTING THE MICROCOMPUTER on page 15.)

3 Perform steps 1 - 8 above.

Note:

The operation explained above will erase all data stored in memory, such as clock and timer settings, tuner and CD presets.

PREPARATION FOR USE

0.2 m - 6 m (8" - 20')

15	15

Notes concerning use:

Replace the batteries if control distance decreases or 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 interfere with operation. Change the lighting or the direction of the unit.

Keep the remote control away from moisture, excessive heat, shock, and vibrations.

C402-C401W,CP-CD

RESETTING THE MICROCOMPUTER

1,2

2

Reset the microcomputer under the following conditions:

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 switch to enter the stand-by mode.

2 Press and hold down the button, and then hold down the ON/STAND-BY switch for at least 1 second.

MANUAL OPERATION

CD-C401W,CP-C402

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-C401W

STEP	REMOVAL		PROCEDURE		FIGURE
1	Top Cabinet	1. Screw .....................		(A1) x4	7-1
2	Side Panel	1. Screw .....................		(B1) x6	7-1
	(Left/right)
3	CD Player Unit/	1.	Turn on the power supply,		7-2
	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	7-2
5	Main PWB/	1. Screw .....................		(E1) x10	8-1
	Display PWB	2. Hook .......................		(E2) x2
		3.	Socket ....................	(E3) x5
6	Front Panel	1. Screw .....................		(F1) x2	8-1
		2.	Hook .......................	(F2) x3
7	Tape Mechanism	1.	Open the cassette holder.		8-2
		2.	Screw......................	(G1) x6
8	Turntable	1. Screw .....................		(H1) x1	8-3
		2.	Cover .....................	(H2) x1
9	Disc Tray	1.	Screw .....................	(J1) x2	8-3
		2.	Guide .....................	(J2) x2
10	CD Changer	1. Screw .....................		(K1) x4	8-4
	Mechanism
11	CD Mechanism	1. Screw .....................		(L1) x1	8-4

Note 1:

How to open the change manually. (Fig. 7-3)

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-C402

STEP	REMOVAL	PROCEDURE		FIGURE
1	Speaker	1. Front panel .............	(A1) x1	8-5
		2. Screw ......................	(A2) x4	8-6

CD-C401W

(A1)x2

ø3x12mm

Top Cabinet

	Hook
	(B1)x1		(A1)x2
	ø3x12mm
	Side Panel		ø3x12mm
	(Right)
			Side Panel
	(B1)x2	Hook	(Left)
	ø3x12mm
		(B1)x1
	(B1)x2	ø3x12mm
	ø3x12mm
		Figure 7-1
	Hook	CD Tray Cover	Hook
			(C1)x3
	(C2)x1
	Push
	Driver
	CD Player Unit
			Hook
			(C2)x1
	Back Board		Push
			Driver
	(D1)x1
	ø3x8mm	(C3)x4
	(D1)x4
	ø3x8mm
		Figure 7-2
		< A >

LOCK

LEVER

Figure 7-3

– 7 –

CD-C401W,CP-C402

	Front Panel
	Hook
(E1)x8	(E2)x2
ø3x10mm
(E3)x2
	Display PWB
(E3)x1	Main PWB
(E1)x2
ø3x10mm

(E3)x1

(E3)x1

Hook

(F2)x3 (F1)x2 ø3x10mm

Figure 8-1

Front Panel

Open (G1)x6 ø3x10mm

Cassette

Holder (Left/Right)

Tape Mechanism

Figure 8-2

( H1 ) x1 ø3 x10mm

( H2 ) x1

Turntable

( J1 ) x1	Disc Tray
ø3 x10mm

( J2 ) x1

( J1 ) x1 ø3 x10mm

CD Player Unit	( J2 ) x1
Figure 8-3

( K1 ) x4

ø3 x14mm

( L1 ) x1 ø2.6 x10mm

Shift Lever

CD Changer

Mechanism

CD Player Base

CD 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 8-4

CP-C402

Front Panel	Speaker Box
(A1) x1

Driver should be pried

away from Speaker Box.

	Screw
Direction of handle	Driver

Figure 8-5

Woofer

Speaker Box

(A2) x2 ø4x12mm

Figure 8-6

– 8 –

CD-C401W,CP-C402

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION

Perform steps 1, 2, 3, 13 and 14 of the disassembly method to remove the CD mechanism.

How to remove the turntable up/down motor (See Fig. 9-1)

1.Remove the screws (A1) x 2 pcs., to remove the turntable up/down motor.

How to remove the pickup (See Fig. 9-2)

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.

Turntable Up/Down

Motor

( A1 ) x2 ø2 x5mm

Figure 9-1

( B1 ) x2

2.6 x6mm

Pickup

CD Mechanism

( B2 ) x1 ( B4 ) x1 ( B3 ) x1

Figure 9-2

– 9 –

CD-C401W,CP-C402

ADJUSTMENT

MECHANISM SECTION

∙ Driving Force Check

Torque Meter	Specified Value
Play: TW-2412	Tape 1: Over 50 g
	Tape 2: Over 100 g

∙ Torque Check

Torque Meter	Specified Value
	Tape 1	Tape 2
Play: TW-2111	30 to 60 g. cm	30 to 60 g.cm
Fast forward: TW-2231	—	80 to 135 g.cm
Rewind: TW-2231	—	80 to 135 g.cm
∙ Tape Speed

	Test Tape	Adjusting	Specified	Instrument
		Point	Value	Connection
Normal	MTT-111	Volume in	3,000 ±	Speaker
speed		motor	30 Hz	terminal
				(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	Frequency	Frequency	Setting/	Instrument
		Display	Adjusting	Connection
			Parts
IF	450 kHz	1,602 kHz	T351	*1
Band	—	531 kHz	(fL): T333	*2
Coverage			1.1 ± 0.1 V
Tracking	990 kHz	990 kHz	(fL): T331	*1

*1. Input: Antenna (CNP301), Output: TP302

*2. Input: Antenna (CNP301), Output: TP301

∙ FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Test Stage	Frequency	Frequency	Serring/	Instrument
		Display	Adjusting	Connection
			Point
Band	—	88.0 MHz	L303(fL):	*1
Coverage			3.4 V ± 50 mV
RF	98.00 MHz	98.00 MHz	L302	*2
	(10-30 dB)

*1. Input: Antenna (CNP301), Output: TP301

*2. Input: Antenna (CNP301), Output: Speaker terminal

∙ Detection

Signal generator: 10.7 MHz, FM sweep generator

Test	Frequency		Frequency		Adjusting	Instrument
Stage			Display		Parts	Connection
Detection	10.7 MHz		98.00 MHz		T352	Input: Pin 1 of
						IC301
						Output: TP302
IF	10.7 MHz		98.00 MHz		T301(Turn	Input: Pin 1 of
					the core of	IC301
					transformer	Output: TP302
					T352 fully
					counter-
					clookwise.)
∙ VCO Frequency
Frequency		Frequency			Adjusting	Instrument
		Display			Parts	Connection
98.00 MHz		98.00 MHz		VR351*		Pin 13, Pin 21
(60 dB)						and ground
						of IC351

* Adjust for 76 kHz ± 200 Hz.

Notes:

After preparing the test circuit shown in Fig 10-2, connect the Pin 13 , Pin 21 and ground of the IC351 with test circuit, and measure the Value.

At this time, apply a standard unmodulated signal input and adjust the VCO.

TAPE MECHANISM

Pin 13 of IC351 Pin 21 of IC351

FET : 2SK19 or 2SK54

G D

S	TO FREQUENCY
	COUNTER
	10 kohm

Volume in motor

MAIN PWB

					AM IF
					T351
	TP303			IC351
		C364	13	C360	21
	VR351		+
					T352
	VCO
				FM DET.
	TP302

Figure 10-2

FM BAND

COVERAGE

	T333
	AM BAND
	COVERAGE fL
R319	AM TRAKING fL
	T331
L303	CNP301
	AM LOOP ANTENNA

TP301

FM IF

T301	1
	IC301	SO301
		ANTENNA
L302		TERMINAL

FM RF

L301

Figure 10-1 ADJUSTMENT POINTS

– 10 –

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. 11-1)

2.Tracking offset (Fig. 11-2)

3.E/F balance (tracking error balance) (Fig. 11-3)

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
		FOCUS
		OFF-SET
		ADJUST
0.1s
0.50 V
IC1 7	TE	TRACKING
		OFF-SET
		1 ADJUST
		2
		Figure 11-1
10ms		Enlarged
		View
0.50 V
IC1 20	FE
10ms
0.50 V
IC1 7	TE	TRACKING
		OFF-SET
		1 ADJUST

		2
		Figure 11-2
	200 ms	TRACKING/
	1V/diV	ERROR
	IC 1 15	BARANCE
	TO	1 ADJUST
	200 ms
	1V/diV
	IC 1 7	2
	TE
		Figure 11-3

CD-C401W,CP-C402

CD TEST MODE

				When the PLAY			and POWER keys are
				pressed at the same time in OFF MODE, the
				set will enter CD TEST MODE
IL is not					↓
performed.				"CD TEST" of LCD will light up.
					↓
				The pickup can be moved by using the ( ) or
				( ) key.
					→ ↓	Press PLAY key
				LASER ON
					↓	Press PLAY key
				FOCUS SERVO ON

Press PLAY key

↓

TRACKING ON THE STOP SERVO OFF PLAY Display "CD 01 0:00"

Press PLAY key

↓

TRACKING ON THE STOP SERVO OFF PLAY

↓	Press PLAY key

STOP "CD TEST" will display

Cancel method: POWER OFF

LCD display: After the PLAY or APMS MEMORY key has been pressed, the track No. and time only will appear (valid). The other items are optional.

Note: The pickup can be slid using the or key only while in the stop mode.

ALL CLEAR AND RE-START FUNCTION

When the STOP and POWER keys are pressed to turn on the power, the entire internal memory will be cleared and the mechanism will run from address 0.

All of the tuner presets, APMS, TOC and disc numbers which were last stored in memory will be cleared, and the tuner, changer mechanism and all of the other items will be initialized.

– 11 –

CD-C401W,CP-C402

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.

∙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.

REF. NO	DESCRIPTION	POSITION
SW1	OPEN/CLOSE	ON—OFF
SW2	MECHA UP	ON—OFF
SW3	DISC NUMBER	ON—OFF
SW4	PICKUP IN	ON—OFF
SW605	TAPE 1 MAIN	ON—OFF
SW606	TAPE 2 MAIN	ON—OFF
SW607	REC.	ON—OFF
SW608	TAPE 1 PLAY	ON—OFF
SW701	POWER	ON—OFF
SW702	VOLUME UP	ON—OFF
SW703	VOLUME DOWN	ON—OFF
SW704	PLAY	ON—OFF
SW705	FF	ON—OFF
SW706	REW	ON—OFF
SW707	OPEN/CLOSE	ON—OFF

REF. NO	DESCRIPTION	POSITION
SW708	STOP	ON—OFF
SW709	DISC SKIP	ON—OFF
SW710	X-BASS	ON—OFF
SW711	FUNCTION	ON—OFF
SW712	BAND	ON—OFF
SW713	CLOCK/TIMER	ON—OFF
SW714	MEMORY	ON—OFF
SW715	TUNING UP	ON—OFF
SW716	TUNING DOWN	ON—OFF
SW718	SPAN SELECTOR	50/9—100/10
SW901	VOLTAGE SELECTOR	110—127—
		220—230/240
SWM 3	FOOL PROOF	ON—OFF
SWM 4	F.A.S.	ON—OFF
SWM 5	CAM	ON—OFF

FRONT

FRONT

VIEW

VIEW

E C B		B C E
(S) (G)(D)		(D)(G)(S)
(1) (2) (3)		(3) (2) (1)
2SC1845 F	KRC104 M	2SD2012 Y
2SC380 O	KTA1266 GR
KRA102 M	KTA1271 Y
KRA109 M	KTC3199 GR
KRC102 M	KTC3203 Y

Figure 12 TYPES OF TRANSISTOR

– 12 –

13 –	BLOCK 13 Figure
–	DIAGRAM
	(1/3)

PICKUP UNIT

FOCUS COIL

TRACKING COIL

M2	M1
SLED	SPINDLE
MOTOR	MOTOR
M	M

PICKUP IN

SW4

VOLTAGE

REGULATOR

+5V

Q1

+5V

XL1

62

64

56

45

44

6 23 36 41 43

LD0

VCC1

VCC2

XIN

XOUT

VVDD VDD LVDD

RVDD XVDD

IC2

LCHO37

IC1

LVSS

38

TO MAIN SECTION

LC78623D

RVSS

39

RCHO

40

( TO IC401 )

LA9241M

9 EFMO SERVO/SIGNAL

JP– 32

1 FIN2

~

10 EFMIN

2 FIN1 SERVO AMP. CV+

40

12 CLV+

CONTROL

3 E

SLC 43

~

4 F

SL1

44

20 JP–

CONT1

24

1

IC91

6

+B5

TA7291

TO FD SPO SP SLD

SL– SL+ DRF

CL DAT CE

RES. CQCK. COIN

CONT2 25

9

MOTOR

5

SQOUT. RWC. WRQ

CONTROL

15 16 27 23 29

30 31 54

51 52 53

53 ~ 58

26

3 7

	5 22 32
6
7	IC5
12

13	M56748FP
24	DRIVER
25
30
31
	8 9 10 11

Q93	SWITCHING
CL, DAT, SELIAL CONTROL/CE
	VOLTAGE
	REGULATOR
Q91	+12V(+B3)
	FROM POWER AMP.
SL+. SL–. DRF	SECTION

20 +B5

26

27

28

29

34

35

36

PU-IN SW

+5V

+B5

10	GND (D)	10		SW2
9	MECHA UP	9		MECHA UP
8	GND (D)	8		SW3
7	DISK NO.	7		DISC NUMBER
6	OPEN/CLOSE	6		SW1
5	GND (D)	5		OPEN/CLOSE
4	M–	4	M	M3
3	M+	3		LOADING
2	GND (M)	2
1		1		SOLM1
CNP10		CNS10

TO DISPLAY

SECTION

VOLTAGE

REGULATOR

Q81

+5V (+B5)

FROM POWER AMP.

SECTION

C402-C401W,CP-CD

CD-C401W,CP-C402

				FM FRONT END
					IC301
				TA7358AP
SO301				MIX		B.A
ANTENNA		RF
TERMINAL								OSC		FM IF IN
FM75ohms	1		3	4	6	5	7	8	9	10.7MHz
										CF302
L301		FM IN		VD301
AM LOOP										VD302
			L302		T301			L303
ANTENNA		FM RF				FM IF		FM
								OSC.
										FM +B
2
1
CNP301
AM ANT.
TERMINAL
		T331	AM ANT.		T333	AM OSC.
										RF AMP
		VD331-1			VD331-2					Q302

									D381
		CD
		SECTION
M601	M
MOTORTAPE
				D201	D202
							+B4
		SW606
		T2 MAIN
		SW605
		T1 MAIN
		SW608
		T1 PLAY
				REC. /P. B. AMP.
TAPE1					IC201
					AN7345K			VCC
P.B. HEAD
L-CH	REC	PB	T1 L	1			13	+B5
R-CH					P. B
	SWITCHING		T1 R	24		L	4 L OUT
TAPE2
		Q201	T2 L	2		R	21 R OUT
REC/P. B. HEAD		~		23
L-CH		Q206	T2 R
R-CH			L NF	3				T1/T2
							19
			R NF 22
			POP				7 L REC IN
			REDUCE 6
			L REC	9	REC		18	R REC IN
				16			8
			R REC					Q210	REC MUTING
							17
								Q213
				12
					ALC
					10	11
							ALC CUT
			SWITCHING
			Q207~
			Q209

	ERASE	Q212
		L203
	HEAD
		BIAS OSC

+B5

AM IF

FM DET

SWITCHING

T351

CF351

T352

FM/AM

Q352

FM +B

OUT

IN

VCC

AM MIX

AM IF

1

3

5

20

21

11

IC351

FM DET

L

LA1805

L OUT 9

R OUT 10 R

FM IF DET. /FM MPX. /AM IF

8 6

22

23 24

17

16

7

15

13

INRFAM

+BAM

OSCAM

OUTDET

INMPX

STEREO

MONO/ST

VR351

FM VCO

Q351

D382

MUTING

X381

4.5MHz

VT

1

FM IN

AM IN

ST

ST

20

22

16 15

11

10

10

VOLTAGE

IC381

REGULATOR

VDD 17

ZD381

LC72131

PLL

7

3

4

5

6

21

FM

CE

DI

CL

DO

Q381

+B5

SWITCHING

		CE DI	CL	9 4
	L	25 24 23
		21
	CD
	R	28
	L	19
T2 ON	TUNER
	R	30
	L	17
	TAPE
	R	32
T1 PLAY
		16	33	14
		L	R	L
T1/T2

TO

REC	+B4
Q211
SWITCHING
REC
SW607	TO

Figure 14 BLOCK DIAGRAM (2/3)

– 14 –

CD-C401W,CP-C402

	LCD701
	COM 0 ~
	COM 3		S0 ~ S20			LMP1
	25	~ 22	21	~	1		SWITCHING
						LMP2	Q704
LCD BIAS
25 ~ 28	21	~ 24	1	~	9 69	~ 80	Q705	+B5
29	COM OUT			SEG OUT
							RESET

KEY MATRIX

~

32	RESET 68	SWITCHING
		Q701

SW702 ~ SW716	34

	~	KEY IN
	37			IC701
DO
	63			IX0182AW			Q702	D703
DI					SYSTEM STOP 13			+B6
	65			SYSTEM			Q703
CE
CL	66			MICROCOMPUTOR			POWER FAIL
	64
							DETECTOR
		INITIAL1
		INITIAL2				REMOCON 38	RX701
				40 ~ 51 60 52			REMOCON
		61 62 67			53 53 53	59 58
		T1 PLAY T2 ON	T1/T2	POWERCONT.	POWERCONT.	XL701
					VDD
						4.19MHz
						SW718
						SPAN
						SELECTOR

GRAPHIC EQUALIZER

IC601

LA4282

POWER AMP.

CE

DI

CL

9 40

8 41

7 42

6 43

4 45

2 47

1 48

2 L-IN

9

L-OUT

25 24 23

5 44

3 46

5 R-IN

J601

L

11

21

IC431

7 R-OUT

HEADPHONES

R

1

NF

10

28

12

LC75394E

6

4

L

3

19

AUDIO PROCESSOR

GND

VCC33V

OUT

GND

R

30

CONT

VOLUME

58

L

L

GRAPHIC EQUALIZER

17

55 R

SPEAKER SWITCH

Q641

R

32

VOLTAGE

P-

VREFL

VREFR

D901 ~ D904

REFV

VSS VSSA

REGULATOR

POWER

TERMINAL

VDD

57

+B5

SO601

T901

SPEAKER

16 33

14 35

56

63

50

26 27

12 37

11 38

10 39

F901

TRANSFORMER

R

T2.5A L 250V

230-240V

SW901

L

R

L

VOLTAGE

220V

SELECTOR

X- BASS

127V

110V

D905 ~ D908

F902

AC SOCKET

AC POWER

SUPPLY CORD

T1.6A L 250V

SO901

T.F

AC 110V/127V/220V/

VOLTAGE

230-240V

50/60Hz

REGULATOR

TO CD SECTION

+B4

Q925

Q924

+12V

(MECHA)

Q926

VOLTAGE

REGULATOR

VOLTAGE

REGULATOR

+B5

(ANALOG)

IC922

+12V

VOLTAGE

REGULATOR

TO CD SECTION

+B6(5V)

IC921

F921

T500mA L 250V

Figure 15 BLOCK DIAGRAM (3/3)

– 15 –

CD-C401W,CP-C402

A

		CNS1B	CNS1A	CNP1
B	K	1	1	1
	E	2	2	2
	A	3	3	3
	B	4	4	4
	F	5	5	5

C
		PICK UP UNIT
	1	K	VR1A		1/16
		E
	2	A
	3
		B
	4
D		1M	2200P	1M	2200P
	5	F
	1				TR+
	2
	3				FO+
	4
	5

	6	FO-
		TR-
	7
	8	ACTUATOR

E
	CNS2B	CNS2A	CNP2
TR_	1	1	1
TR+	2	2	2
FO+	3	3	3
FO_	4	4	4
GND	5	5	5
PD	6	6	6
VR	7	7	7
LD	8	8	8
F

	CD MOTOR
	PWB-B		CNS3B	CNS3A
	M1	M			CNP3	SP+
	SPINDLE		6	6	6
	MOTOR		5	5	5	SP_
G						SL+
	M2	M	4	4	4
	SLED		3	3	3	SL_
	MOTOR					PU-IN
	SW4		2	2	2
	PU-IN		1	1	1

H

R1

1K

C1

C2

0.01

47/10

Q1

R43

C40 0.33/50

R45

1K

KTA1266 GR

C39

0.47/50

C38 .010

C37

220/6.3

C35 0.1/50

12

R46

1K

1.3V

3.6V

C24

R47

1K

C25

3V

1/50

0.01

IC1

R42 560

LA9241M

64

63

62

61

60

59

58

57

VCC256

55

54

53

52 DAT

51

49

R41 4.7K C45 4.7/25

SERVO AMP.

VCC1

+

LDO

BHI

PHI

LF2

VR

REF1

FSS

DRF

CE

CL

CLK50

DEF

C50

LDS

–

48

1

FIN2

RF

+

0.1

REF

–

–

(ML)

2 FIN1

+

REF

TBC

47

–

+

–

FE1

DEF

REF

+

–

EFBAL

3

E

+

REF

–

FOSTA

FSC

46

F

VCR

+

HFL

TOSTA

CE

DGND

45

C3

4

REF

VCR

SLI

44

–

+

REF

+ –

C34

R38

0.1/50

R3 5

TB

+

VCR

–

DRF

2FREQ

LATOH

CL

C33 0.001

C4

100K

TE

+

+

R36

R37

VCR

–

LASER

0.033 33K

R2

15K 6 TE-

REF

–

(ML)

0.001

FSTA

47K

47K

C5

7

8/12CM

SLC

43

REF +

+

SLOF

0.033(ML)

–

R33

C32

R34

R4

TESI

REF

–

+

RFS–

5.6K

27P

1K

VCC

2.2K

8

REF

42

C6

0.033(ML)

–

+ –

C30

2.2P

REF

REF

CV–

TP1

C31

LUG1

100

0.1/50

TH

–

TGL1

S.Q.R

+

470

6.8K

SCI

–

–

R32 56K

R5

9

+

+

+

R35

C7

REF

CV+

RF

41

R6

THDL

GL

FSTA

REF

RFSM

JP–

R7

C8

10

THD

JP

–

JP+

0.0027

–

+

CV+

40

1K

0.068

JP

FSC

JPCLO

SLOF SLOF

CV–

39

(ML) 11

R9

C9

12

GEN

+

REF

FOSTA

REF

FE1

REF

OR

SLOF

38

0.047

TD-

–

TO

GEN

–+

SLOF

37

27K

(ML)

R8

REF

+

+–

HFL

3.3K

JP

REF

REF

–

REF

–+

REF

+

TOFF

C10

–

R11

12K

13

TD

+

GEN

TES

36

–

180P

14

TO +–

+

35

15

–

+

TGL

34

C75 100P

17

18

19

20

21

22 AGND

23

REF

24

25

26 C16 0.001 27

28

29

–

FD

30

31 JP– 32

16

- FD

FA

FA–

FE

FE–

SP

SPI

SPG

SP–

SPO

SLEO

SLD

SL–

JP+

33

REF

R13

C19

C53

33K

R14 10K

C12 330P R17 82K

C15

00470.

R2010K

47/10

220P

R28

R29

(ML)

R22

C18 1/50

R12

C13

R21

R39

15K

0.1

R15

R16

39K

56K

R25 1.2K

R24 10K

C20

0.0033

R27 220K

R23 1.2K

1K

1K

C14

6.8K

0.01

R19

22K

22K

47K

1.5K

R30 18K

R26

220K

R40

C11

C17

0.1

0.47/50

(ML)

C21

1/50

R10

D2

1

36

82K

1SS119

2

35

3

34

4

IC5 M56748FP FOCUS/TRACKING/ SPIN/SLIDEDRIVER

33

5

32

+5V

15

22

6

31

7

30

8

29

9

28

10

27

11

26

12

25

R31

13

24

14

23

10K

C44

330/10

16

21

17

20

18

19

R54	PUIN	SL–	SL+	DRF
1K
	1	2	3	4

P

TO D

• NOTES ON SCHEMATIC DIAGRAM can be found on page 12.

1

2

3

4

5

6

Figure 16 SCHEMATIC DIAGRAM (1/9)

– 16 –