Sharp CDDK-2500-W, CDDP-2500-W Service manual

CD-DP2500W/DK2500W

SERVICE MANUAL

No. S4034CDDP2500

CD-DP2500W

CD-DP2500W Mini Component System consisting of CDDP2500W (main unit), CP-DP2500 (front speakers), GBOXS0038AWM1 (centre speaker) and GBOXS0039AWM1 (surround speakers).

CD-DP2500W

CD-DK2500W

CD-DK2500W

CD-DK2500W Mini Component System consisting of CDDK2500W (main unit), CP-DP2500 (front speakers), GBOXS0038AWM1 (centre speaker) and GBOXS0039AWM1 (surround speakers).

DIFFERENCE BETWEEN CD-DP2500W AND CD-DK2500W

SECTION	CD-DP2500W	CD-DK2500W
KARAOKE	Non	Used

Manufactured under license from Dolby Laboratories Licensing Corporation.

DOLBY, the double-D symbol and "PRO LOGIC" are trademarks of Dolby Laboratories Licensing Corporation.

•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 SELECTION .....................................................................................................................................................	2
SPECIFICATIONS .............................................................................................................................................................	3
NAMES OF PARTS ...........................................................................................................................................................	4
OPERATION MANUAL ......................................................................................................................................................	8
DISASSEMBLY ..................................................................................................................................................................	9
REMOVING AND REINSTALLING THE MAIN PARTS ...................................................................................................	12
TEST MODE ....................................................................................................................................................................	13
ADJUSTMENT .................................................................................................................................................................	14
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................	16
BLOCK DIAGRAM ...........................................................................................................................................................	17
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ..............................................................................................	20
VOLTAGE ........................................................................................................................................................................	42
WAVEFORMS OF CD CIRCUIT ......................................................................................................................................	43
TROUBLESHOOTING (CD SECTION) ...........................................................................................................................	44
FUNCTION TABLE OF IC ................................................................................................................................................	48
FL DISPLAY ......................................................................................................................................................................	54
REPLACEMENT PARTS LIST/EXPLODED VIEW

This document has been published to be used

SHARP CORPORATION for after sales service only.

The contents are subject to change without notice.

CD-DP2500W/DK2500W

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.

CAUTION

●This Mini Component System is classified as a CLASS 1

LASER product.

●The CLASS 1 LASER PRODUCT label is located on the rear cover.

●Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

As the laser beam used in this compact disc player is harmful to the eyes, do not attempt to disassemble the cabinet. Refer servicing to qualified personnel only.

Laser Diode Properties

Material: GaAIAs

Wavelength: 780 nm

Emission Duration: continuous

Laser Output: max. 0.6 mW

Illustration:CD-DP2500W

VOLTAGE SELECTION

The voltage selector is located on the AC voltage selector box. If adjustment is necessary, ensure to remove plug of AC cord from AC socket and use a screwdriver in order to turn the selector in either direction. The correct voltage figure is displayed in the window below to the adjustment screw.

QACCB0006AW00

QACCA0003AW00

QACCE0010AW00

QPLGA0003AWZZ QPLGA0004AWZZ

QACCJ0007AW00

Figure 2 POWER SUPPLY CORD

– 2 –

CD-DP2500W/DK2500W

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

SPECIFICATIONS

● General

Power source:	AC 110/127/220/230-240 V, 50/60 Hz
Power consumption:	155 W
Dimensions:	Width; 270 mm (10-5/8")
	Height; 330 mm (13")
	Depth; 332 mm (13-1/16")
Weight:	8.9 kg (19.6 lbs.)

● Amplifier section

Output power:	Front speakers;
	MPO; 200 W (100W + 100 W)
	(10 % T.H.D.)
	RMS; 120 W (60 W + 60 W)
	(10 % T.H.D.)
	RMS; 96 W (48 W + 48 W)
	(0.9 % T.H.D.)
	Centre speaker;
	MPO; 50 W (10 % T.H.D.)
	RMS; 30 W (10 % T.H.D.)
	RMS; 24 W (0.9 % T.H.D.)
	Surround speakers;
	MPO; 50 W (25 W + 25 W)
	(10 % T.H.D.)
	RMS; 30 W (15 W + 15 W)
	(10 % T.H.D.)
	RMS; 24 W (12 W + 12 W)
	(0.9 % T.H.D.)
Output terminals:	Front speakers; 6 ohms
	Centre speaker; 6 ohms
	Surround speakers; 12 ohms
	Headphones; 16-50 ohms
	(recommended; 32 ohms)
	CD digital output (optical)
Input terminals:	Video/Auxiliary (audio signal) × 2;
(CD-DP2500W)	500 mV/47 kohms
Input terminals:	Video/Auxiliary (audio signal) × 2;
(CD-DK2500W)	500 mV/47 kohms
	Microphone 1/2; 1 mv/600 kohms

● Compact disc player section

Type:	3-disc multi-play compact disc player
Signal readout:	Non-contact, 3-beam semiconductor
	laser pickup
D/A converter:	1-bit D/A converter
Frequency response:	20 - 20,000 Hz
Dynamic range:	90 dB (1 kHz)

● 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:	55 dB (TAPE 1, playback)
	50 dB (TAPE 2, recording/playback)
Wow and flutter:	0.3 % (WRMS)

● Front speaker section

Type:	3-way type [13 cm (5-1/4") woofer,
	5 cm (2") tweeter and super tweeter]
Maximum input
power:	120 W
Rated input power:	60 W
Impedance:	6 ohms
Dimensions:	Width; 240 mm (9-1/2")
	Height; 330 mm (13")
	Depth; 255 mm (10-1/16")
Weight:	3.9 kg (8.5 lbs.)/each

● Centre speaker section

Type:	10 cm (4") full-range speaker
Maximum input
power:	60 W
Rated input power:	30 W
Impedance:	6 ohms
Dimensions:	Width; 260 mm (10-1/4")
	Height; 140 mm (5-1/2")
	Depth; 155 mm (6-1/8")
Weight:	0.9 kg (2.0 lbs.)

● Surround speaker section

Type:	10 cm (4") full-range speaker
Maximum input
power:	30 W
Rated input power:	15 W
Impedance:	12 ohms
Dimensions:	Width; 200 mm (7-7/8")
	Height; 93 mm (3-11/16")
	Depth; 170 mm (6-3/4")
Weight:	0.5 kg (1.1 lbs.)/each

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

– 3 –

CD-DP2500W/DK2500W

NAMES OF PARTS

Front panel [CD-DP2500W]

1.(CD) Disc Tray

2.Extra Bass Indicator

3.Spectrum Analyzer/Volume Level Indicator

4.(CD) Disc Number Indicators

5.(CD/TUNER) Memory Indicator

6.(CD) Pause Indicator

7. (TAPE 2) Record Indicator

8. (CD) Play Indicator

9. (CD) Music Schedule Indicators

0. (CD) More Tracks Indicator

11.Sleep Indicator

12.FM Stereo Mode Indicator

13.(TAPE) Reverse Mode Indicator

14. (TAPE 2) Reverse Play Indicator

15. (TAPE 1) Play Indicator

(TAPE 2) Forward Play Indicator

16. (CD) Repeat Indicator

17. FM Stereo Indicator

18.Timer Record Indicator

19.Timer Play Indicator

20. Memory/Set Button

21. (CD) Track Down/Review Button

(TUNER) Preset Down Button

(TAPE 2) Fast Wind Button

22.Bypass Button

23.(CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

24.Normal Button

25.Phantom Button

26.Timer Set Indicator

27.On/Stand-by Button

28. Clock Button

29. Timer/Sleep Button

30. Function Selector Buttons

31.Dimmer Button

32.Volume Control

33.Equalizer Mode Selector Button

34. (CD) Disc Number Select Buttons

35. Headphone Socket

36. Tuning and Time Up/Down Buttons

37. (TAPE 2) Record Pause Button

38.(TAPE 2) Reverse Play Button

39.(CD/TAPE) Stop Button

40.(TAPE 2) Reverse Mode Button

41.(CD) Play/Repeat Button (TAPE 1) Play Button

(TAPE 2) Forward Play Button

42. Extra Bass/Demo Mode Button

43. (CD) Disc Skip Button

44.(CD) Open/Close Button

45.(TAPE 1) Cassette Compartment

46.(TAPE 2) Cassette Compartment

– 4 –

Front panel [CD-DK2500W]

1.(CD) Disc Tray

2.Extra Bass Indicator

3.Spectrum Analyzer/Volume Level Indicator

4.(CD) Disc Number Indicators

5.Karaoke Maker Indicator

6.(CD/TUNER) Memory Indicator

7.(CD) Pause Indicator

8.(TAPE 2) Record Indicator

9.(CD) Play Indicator

(CD) Music Schedule Indicators

(CD) More Tracks Indicator

12.Sleep Indicator

13.FM Stereo Mode Indicator

14.(TAPE) Reverse Mode Indicator

15.(TAPE 2) Reverse Play Indicator

16.(TAPE 1) Play Indicator

(TAPE 2) Forward Play Indicator

17.(CD) Repeat Indicator

18.FM Stereo Indicator

19.Timer Record Indicator

20.Timer Play Indicator

21.Memory/Set Button

22.(CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

23.Bypass Button

24.(CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

25.Normal Button

26.Phantom Button

27.Timer Set Indicator

28.On/Stand-by Button

29.Clock Button

30.Timer/Sleep Button

31.Function Selector Buttons

32.Dimmer Button

33.Volume Control

34.Equalizer Mode Selector Button

35.(CD) Disc Number Select Buttons

36.Headphone Socket

37.Tuning and Time Up/Down Buttons

38.(CD) Disc Skip Button

39.(CD) Open/Close Button

40.(TAPE 2) Record Pause Button

41.(TAPE 2) Reverse Play Button

42.(CD/TAPE) Stop Button

43.(TAPE 2) Reverse Mode Button

44.(CD) Play/Repeat Button (TAPE 1) Play Button

(TAPE 2) Forward Play Button

45.Extra Bass/Demo Mode Button

46.Microphone Sockets

47.Microphone Level Controls

48.(TAPE 1) Cassette Compartment

49.(TAPE 2) Cassette Compartment

CD-DP2500W/DK2500W

– 5 –

CD-DP2500W/DK2500W

Rear panel

1. AC Voltage Selector

2. AC Power Lead

3. CD Digital Output Socket

4. FM 75 Ohms Aerial Terminal

5. FM Aerial Earth Terminal

6. AM Loop Aerial Input Socket

7. Span Selector Switch

8. Video/Auxiliary (Audio Signal) Input Sockets

9. Front Speaker Terminals

10. Centre Speaker Terminals

11. Surround Speaker Terminals

Front speaker

1. Super Tweeter

2. Tweeter

3. Woofer

4. Bass Reflex Ducts

5. Speaker Wire

Centre speaker

1. Full-Range Speaker

2. Speaker Wire

Surround speaker

1. Full-Range Speaker

2. Speaker Wire

– 6 –

CD-DP2500W/DK2500W

Remote control [CD-DP2500W]

1.Remote Control Transmitter LED

2.Dolby Pro Logic Surround Mode Button

3.Test Tone Button

4.Centre Level Buttons

5.Surround Level Buttons

6.Balance Control Buttons

7.(CD) Disc Skip Button

8.(CD) Clear Button

9.(CD) Memory Button

10.(CD) Random Button

11.(TAPE 2) Record Pause Button

12.(CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

13.(CD) Pause Button

14.(CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

15.Equalizer Mode Selector Button

16.(TAPE 2) Reverse Play Button

17.(CD/TAPE) Stop Button

18.(CD) Play/Repeat Button (TAPE 1) Play Button

(TAPE 2) Forward Play Button

19.Function Selector Buttons

20.On/Stand-by Button

21.Extra Bass Button

22.Volume Up/Down Buttons

Remote control [CD-DK2500W]

1.Remote Control Transmitter LED

2.Karaoke Mode Button

3.Vocal Replacer Button

4.Dolby Pro Logic Surround Mode Button

5.Test Tone Button

6.Echo Level Up/Down Buttons

7.Centre Level Buttons

8.Surround Level Buttons

9.Balance Control Buttons

10.(CD) Disc Skip Button

11.(CD) Clear Button

12.(CD) Memory Button

13.(CD) Random Button

14.(TAPE 2) Record Pause Button

15.(CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Fast Wind Button

16.(CD) Pause Button

17.(CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Fast Wind Button

18.Equalizer Mode Selector Button

19.(TAPE 2) Reverse Play Button

20.(CD/TAPE) Stop Button

21.(CD) Play/Repeat Button (TAPE 1) Play Button

(TAPE 2) Forward Play Button

22.Function Selector Buttons

23.On/Stand-by Button

24.Extra Bass Button

25.Volume Up/Down Buttons

– 7 –

– 8 –

SETTING THE CLOCK

	In this example, the clock is set for the 24-hour (0:00) system.
(Main unit operation)	1 Press the ON/STAND-BY button to enter the stand-by mode.
	2 Press the CLOCK button.
	3 Within 5 seconds, press		button.
	4 Press the TUNING/TIME		) button to select the time
	display mode.
	“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)
	● Note that this can only be set when the unit is first in-
	stalled or it has been reset.
	5 Press the MEMORY/SET
	6 Press the TUNING/TIME		) button to adjust the hour.
	● Press the TUNING/TIME		) button once to ad-
	vance the time by 1 hour. Hold it down to advance con-
	tinuously.
	● When the 12-hour display is selected, “AM” will chang
	automatically to “PM”.
	7 Press the MEMORY/SET
	8 Press the TUNING/TIME		) button to adjust the min-
	utes.
	● Press the TUNING/TIME		) button once to ad-
	vance the time by 1 minute. Hold it down 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” second.
	(Seconds are not displayed.)
	And then the clock display will disappear after a few sec-
	onds.
	To see the time display:
	Press the CLOCK button.
	● The time display will appear for about 5 seconds.
	Note:
	● The clock display will flash on and off at the push of the
	CLOCK button when the AC power supply is restored after
	a power failure occurs or after the AC power lead is discon-
	nected.
	If this happens, follow the procedure below to change the
	clock time.
	To change the clock time:
	1 Press the CLOCK button.
Illustration:CD-DP2500W	2 Within 5 seconds, press the MEMORY/SET button.
	3 Perform steps 6 - 9 above.
	To change the time display mode:
	1 Perform steps 1 - 2 in the section “RESETTING THE M
	CROCOMPUTER”.
	2 Perform steps 1 - 9 above.

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following conditions:

● To erase all of the stored memory contents (clock and timer settings, and tuner and CD presets).

● If the display is not correct. ● If the operation is not correct.

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

2 Whilst pressing down the 0button and the X-BASS/ DEMO button, hold down the ON/STAND-BY button for at least 1 second.

● “CLEAR AL” will appear.

Caution:

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

Illustration:CD-DP2500W

MANUAL OPERATION

DP2500W/DK2500W-CD

CD-DP2500W/DK2500W

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 suffcient care on static electricity of integrated circuits and other circuits when servicing.

CD-DP2500H/DK2500W

STEP	REMOVAL		PROCEDURE		FIGURE
1	Top Cabinet	1.	Screw .....................	(A1) x4	9-1
2	Side Panel	1.	Screw .....................	(B1) x8	9-1
	(Left/right)
3	CD Player Unit/	1.	Turn on the power supply,		9-2
	CD Tray Cover		open the disc tray, take out
			the CD cover, and close.
			(Note 1)
		2.	Screw .....................	(C1) x1
		3.	Hook .......................	(C2) x3
		4.	Hook .......................	(C3) x2
		5.	Socket ....................	(C4) x3
4	Rear Panel	1.	Screw .....................	(D1) x9	9-2
5	Main PWB	1.	Screw .....................	(E1) x3	9-2
		2.	Socket ....................	(E2) x2	10-3
			(CD-DP25000W)
		2.	Socket ....................	(E2) x3
			(CD-DK25000W)
		3.	Flat Cable ..............	(E3) x1
		4.	Lug Wire .................	(E4) x1
		5.	Socket ....................	(E5) x1
6	Power Supply PWB	1.	Screw .....................	(F1) x2	10-3
		2.	Socket ....................	(F2) x5
		3.	Flat Wire .................	(F3) x1	10-4
7	Front Panel	1.	Screw .....................	(G1) x2	10-3
8	Karaoke PWB	1.	Screw .....................	(H1) x2	10-4
	(CD-DK25000W
	ONLY)
9	Display PWB/	1. Screw .....................		(J1) x15	10-4
	Headphones PWB	2.	Flat Cable ..............	(J2) x1
10	Tape Mechanism	1.	Open the cassette holder		10-4
		2.	Screw .....................	(K1) x5
11	Turntable	1.	Hook .......................	(L1) x2	10-5
		2.	Cover .....................	(L2) x1
12	Disc Tray	1.	Turn fully the lock lever in the		10-1
			arrow direction.
		2.	While holding the lock lever,rotate		10-2
			the cam gear until the cam gear
			rib engages with the clamp lever.
		3.	Push the slide holder backward to		10-6
			engage the claw with the groove
			and remove it in the direction
			of the arrow. ..............	(M1) x6
13	CD Servo PWB	1.	Screw .....................	(N1) x1	11-1
	(Note 2)	2.	Hook .......................	(N2) x2
		3.	Socket ....................	(N3) x4
14	CD Mechanism	1.	Hook .......................	(P1) x2	11-2
		2.	Hook .......................	(P2) x3
15	Loading Motor PWB	1.	Hook .......................	(Q1) x5	11-2

Note 1:

How to open the changer manually. (Fig. 10-1)

1.In this state, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom.

2.While holding the lock lever, rotate the cam gear anticlockwise until the cam gear rib engages with the clamp lever. (Fig. 10-2)

3.After that, push forward the CD slide holder.

Note 2:

1. After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of the connector so as to protect the optical pickup from electrostatic damage.

Note 3:

1.Be careful not to break the claw of the CD mechanism.

2.When fining back the cam gear assembly, let it lock by front movement.

CD-DP2500H/DK2500W

(A1)x2

Top Cabinet

ø3x12mm

Side Panel (Right)

(B1)x2
ø3x10mm		(A1)x2
		ø3x12mm
		Side Panel
		(Left)
(B1)x4		(B1)x2
ø3x10mm	Rear	ø3x10mm
	Panel

Figure 9-1

CD Servo

PWB

(C4)x3

DC Tray Cover

(C2) x3

1

(C3) x1	1
Pull	2

CD Player

Unit

Rear	(C3)x1
Panel

(C1)x1 ø3x10mm

(E1)x3 ø3x10mm

(D1)x7
ø3x10mm	(D1)x2
	Main PWB ø3x10mm

Figure 9-2

– 9 –

CD-DP2500W/DK2500W

	LOCK LEVER	(J2)x1
		Display PWB
	(J1)x14	(F3)x1
	ø3x10mm
	Tape
	Mechanism
	(K1)x5	Headphones
		PWB
	ø3x10mm
		Open
	Figure 10-1
	Karaoke	Cassette
	PWB
		Holder
	CLAMP LEVER	(J1)x1
	(H1)x1	ø3x10mm
	ø3x10mm	CD-DK2500W

ONLY

Figure 10-4

(L2) x1

Turntable

CAM GEAR RIB

Figure 10-2

Disc Tray

				(L1) x2
	Tape		(F1)x1	(F1)x1
			ø3x6mm
	Mechanism
(E5)x1				ø3x10mm
CD-DK2500W				CD Player Unit
ONLY		(E4)x1

(E2)x1

(E3)x1

(E2)x1

Figure 10-5

(M1) x3

Power

Supply Main PWB 3 PWB

(F2)x1

2

			(E2)x1
		Power	1
(F2)x4	(G1)x2	Supply
		PWB

ø3x10mm	(M1) x3

Figure 10-3 Figure 10-6

– 10 –

	(N1)x1	CD Servo	CD Player
	ø3x8mm
			Base
		PWB
		(N3) x2

(N2) x2

(N3) x2

Figure 11-1

CP-DP2500

STEP	REMOVAL		PROCEDURE		FIGURE
1	Front Panel	1. Front Panel ............		(A1) x1	11-3
2	Woofer	1. Screw .....................		(B1) x4	11-3
4	Tweeter	1.	Screw ....................	(C1) x2	11-3
5	Super Tweeter	1.	Screw ....................	(D1) x2	11-3

CD-DP2500W/DK2500W

CD	(P2) x3
Mechanism
		Loading
	(P1) x1	Motor
(P1) x1		PWB

(Q1) x5

Figure 11-2

CP-DP2500

(A1)x1

(D1)x2

Ø3x10mm

(C1)x2

Ø3x10mm

(B1)x4

Ø4x12mm

Woofer

Screw Driver

Figure 11-3

– 11 –

CD-DP2500W/DK2500W

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 7 and 10 of the disassembly method to remove the tape mechanism.

How to remove the record/playback and erase heads (TAPE 2) (See Fig. 12-1)

1.When you remove the screw (A1) x 2 pcs., the recording/ playback head and three-dimensional head of the erasing head can be removesd.

How to remove the playback head (TAPE 1) (See Fig. 12-2)

1.When you remove the screw (B1) x 2 pcs., the playback head.

How to remove the pinch roller (TAPE 1/2) (See Fig. 12-3)

1. Carefully push the inside claw to remove it. The pinch roller pawl in the direction of the arrow <A>, and remove the pinch roller (C1) x 1 pc., in the direction of the arrow <B>.

Note:

When installing the pinch roller, pay attention to the spring mounting position.

How to remove the belt (TAPE 1) (See Fig. 12-4)

1.Remove the main belt (D1) x 1 pc., from the motor side.

2.Remove the FF/REW belt (D2) x 1 pc.

TAPE 2

Record/Playback

Head

Erase Head

(A1)x2

Ø2 x 5mm

Figure 12-1

TAPE 1

Playback

Head

(B1)x2 Ø2 x 9mm

Figure 12-2

How to remove the belt (TAPE 2) (See Fig. 12-4)

1.Remove the main belt (E1) x 1 pc., from the motor side.

2.Remove the FF/REW belt (E2) x 1 pc.

How to remove the motor (See Fig. 12-5)

1. Remove the screws (F1) x 2 pcs., to remove the motor.

		Pinch Roller
		Pawl
	Pinch Roller	<A>
	(C1)x1
	<B>
		Figure 12-3
Motor		Motor
TAPE2	FF/REW	Motor	TAPE1
	Belt	TAPE2	Main Belt
	(E2)x1		(D1)x1
		Main Belt
		(E1)x1
(F1) x2
Ø 2.6 x 5mm
			TAPE1
	Main Belt		FF/REW
			Belt
			(D2)x1

Figure 12-5

Figure 12-4

– 12 –

CD-DP2500W/DK2500W

CD MECHANISM SECTION

Perform steps 1, 2, 3, and 11 to 14 of the disassembly method to remove the CD mechanism.

How to remove the loading motor (See Fig. 13-1)

1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.

Loading Motor

(A1)x1

(A1)x2

How to remove the pickup (See Fig. 13-2)

1.Remove the stop washer (B1) x 1 pc., to remove the gear (B2).

2.Remove the screws (B3) x 2 pcs., to remove the shaft (B4).

3.Remove the pickup.

Note

After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.

(A1)x2

CD Base

		Figure 13-1
	(B1) x2	Stop Washer
		(B3) x1
	ø2.6 x6mm

Pickup

	Shaft	CD Mechanism
		Gear
	(B2) x1
		(B4) x1
		Figure 13-2

TEST MODE

During POWER OFF mode,push below each 2 keys [ON/STAND-BY] key.

Then go to each TEST MODE.

KEY	TEST MODE	CONTENTS
[ON/STAND-BY] [TUNER] + [X-BASS]	TEST 1	TUNER PRESET MEMORY CLEAR
[ON/STAND-BY] [MEMORY/SET] + [X-BASS]	TEST 2	TUNER PRESET FOR PRODUCTION
[ON/STAND-BY] [>>] + [X-BASS]	TEST 3	KEY AND DISPLAY TEST
[ON/STAND-BY] [CD] + [X-BASS]	TEST 4	CD TEST MODE
[ON/STAND-BY] [TAPE] + [X-BASS]	TEST 5	TAPE TEST MODE
[ON/STAND-BY] [>] + [X-BASS]	TEST 6	ALL CLEAR(RESET)
[ON/STAND-BY] [TUN UP] + [X-BASS]	TEST 7	AUDIO TEST
[ON/STAND-BY] [TUN DOWN] + [X-BASS]	TEST 8	PRODUCTION INITIALIZE FOR CHANGER

– 13 –

CD-DP2500W/DK2500W

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter	Specified Value
Play: TW-2111	Tape 1: Over 80 g
	Tape 2: Over 80 g

• Torque Check

Torque Meter	Specified Value
	Tape 1	Tape 2
Play: TW-2111	30 to 80 g. cm	30 to 80 g.cm
Fast forward: TW-2231	—	70 to 180 g.cm
Rewind: TW-2231	—	70 to 180 g.cm

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
AM IF	450 kHz	1,602 kHz	T351	*1
AM Band	—	531 kHz	(fL): T306	*2
Coverage			1.1 ± 0.1 V
AM Tracking	990 kHz	990 kHz	(fL): T303	*1

*1. Input: Antenna,SO301 Output: TP302

*2. Input: Antenna,SO301 Output: TP301

CD SECTION

•Adjustment

Since this CD system incorporates the following automatic adjustment functions, readjustment is not needed when replacing the pickup. Therefore, different PWBs and pickups can be combined freely.

Each time a disc is changed, these adjustments are performed automatically. Therefore, playback of each disc can be performed under optimum conditions.

Items adjusted automatically

(1)Offset adjustment (The offset voltage between the head amplifier output and the VREF reference voltage is compensated inside the IC.)

*Focus offset adjustment

*Tracking offset adjustment

(2)Tracking balance adjustment (waveform drawing 14-3 EFBL)

(3)Gain adjustment (The gain is compensated inside the IC so that the loop gain at the gain crossover frequency will be 0dB.)

*Focus gain adjustment

*Tracking gain adjustment

• Tape Speed

Test Tape

Adjusting

Specified

Instrument

Point

Value

Connection

Normal

MTT-111

Variable

3,000 ±

Speaker

speed

Resistor in

30 Hz

terminal

motor.

(Load

(MM1)

resistance:

6 ohms)

TAPE MECHANISM

Motor

Variable Resistor in motor

Figure 14-1

MAIN PWB

IC302

SO301

C375

FM75 ohms

AM IF

C393

T351

TP301

T301

GND

CF352

T302

CNP301

CF351

AM LOOP

IC301

ANTENNA

IC303

CF302

R357

L312

T303

TP302

AM Tracking

T306

AM Band Coverage

Figure 14-2 ADJUSTMENT POINT

CD ERROR CODE DESCRIPTION

Error

State Code

[Servo System Error]

0001

Cannot detect Pickup-in SW

0002

DSP access error

[Error during close operation]

0101

Open/Close SW not functioning (Low → High)

0103

Open/Close SW not functioning (High → Low)

[Error during open operation]

0201

Open/Close SW not functioning (Low → High)

0203

Open/Close SW not functioning (High → Low)

[Error during skip operation]

0302

Pickup-in SW is not detected

0306

During Disc 1 search, Open/Close SW or Clamp SW

or Disc SW do not change to low.

0307

Clamp SW not function (Low → High)

0308

Clamp SW not function (High → Low)

	Stopped	T						1999/04/05	20:26:47
	CH1=500mV		CH2=200mV		CH3=1V			500ms/div
	DC	10:1	DC	10:1	DC 10:1			(500ms/div)
								NORM:20kS/s
T	FDO
1
3	TE
	EFBL
2
									CH2
									v/DIV
									200mV
	=Filter=		=Offset=		=Record Length=			=Trigger=
Smoothing : ON			CH1 :	0.000V	Main :	100K	Mode : SINGLE
BW	: FULL		CH2 :	0.000V	Zoom :	2k	Type	: EDGE CH1
			CH3 :	0.00V			Delay :		0.0ns
			CH4 :	0.00V			Hold off :		0.2us
				Figure 14-3

– 14 –

CD-DP2500W/DK2500W

EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD

Outline

•Namely, two speakers are connected in parallel to one amplifier.

•In the Pro Logic BYPASS mode the amplifier for C-ch (center channel) and the amplifier for S-ch (surround channel) are in MUTE state. The SP output is cut.

•In the normal mode of Pro Logic ON mode the amplifiers for C-ch and S-ch are in operative state, so that the SP output appears.

•In the Phantom mode of Pro Logic ON mode the amplifier for C-ch is in MUTE state, so that the SP output is cut. The amplifier for S-ch (surround) is in operative state, so that the SP output appears

•State of element output and terminal output in specific mode

	State of set	Dolby Pro Logic		Dolby Pro Logic On mode
Output point		Bypass mode		Normal mode				Phantom mode
IC501	1 pin L-out	Output enabled state		Output enabled state				Output enabled state
	2 pin R-out	Output enabled state		Output enabled state				Output enabled state
IC501	3pin C-out	No output		Output enabled state				No output
IC501	9pin S-out	No output		Output enabled state				Output enabled state
SP OUT	L-ch	Output enabled state		Output enabled state				Output enabled state
(SO901)	R-ch	Output enabled state		Output enabled state				Output enabled state
SP OUT C-ch		No output in MUTE (Q501) state		Output enabled state				No output in MUTE (Q501) state
(SO901)
SP OUT S-ch		No output in MUTE (Q502) state		Output enabled state				Output enabled state
(SO901)
Test tone output
					Output point			Phantom mode
• Pro Logic ON Normal mode
Press the remote control TEST TONE button.					SP out		L-ch	Input signal is output.
→Output of only L-ch →Output of only C-ch					(SO901)		R-ch	Input signal is output.
↑			↓
					(SO901) SP out C-ch			SP cut, no output
Output of only S-ch ← Output of only R-ch
					(SO901) SP out S-ch			Almost no output (only omitting component)
The test tone (noise) is repeatedly output for output period
					(2) L-ch/R-ch reverse phase input into VIDEO IN input jack in
(2 sec).
In this case the following indication appears repeatedly.					VIDEO Function mode
→TEST →L-ch →C-ch					(Reverse phase: Phase difference between L and R is 180°)
	↑	↓
					Output point			Normal mode
	S-ch ← R-ch
					SP out		L-ch	Almost no output (only omitting component)
• Pro Logic ON Phantom mode
					(SO901)		R-ch	Almost no output (only omitting component)
Press the remote control TEST TONE button.
					(SO901) SP out C-ch			Almost no output (only omitting component)
→Output of only L-ch →Output of only R-ch
		↑	↓		(SO901) SP out S-ch			Input signal is output.
		← Output of only S-ch
The test tone (noise) is repeatedly output for output period					Output point			Phantom mode
(2 sec).
					SP out		L-ch	Almost no output (only omitting component)
In this case the following indication appears repeatedly.					(SO901)		R-ch	Almost no output (only omitting component)
					(SO901) SP out C-ch			SP cut, no output
→TEST → L-ch → R-ch
	↑	↓			(SO901) SP out S-ch			Input signal is output.
	← S-ch←			• Accordingly, if you want to output signal waveform to C-ch SP

	Relation between VIDEO IN input and output in Pro Logic	out, give the same phase input into L-ch/R-ch INPUT in the
		Pro Logic Normal mode.
	ON state
		If one of channels receives input, C-ch does not output. Only
	(1) L-ch/R-ch same phase input into VIDEO IN input jack in
		L-ch or R-ch outputs.
	VIDEO Function mode

Output point		Normal mode
SP out	L-ch	Almost no output (only omitting component)
(SO901)	R-ch	Almost no output (only omitting component)
(SO901) SP out C-ch		Input signal is output.
(SO901) SP out S-ch		Almost no output (only omitting component)

•If you want to output signal waveform to S-ch SP out, you can use either Normal mode or Phantom mode. However, 180° reverse phase input must be given to L-ch/R-ch INPUT.

– 15 –

CD-DP2500W/DK2500W

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	CLAMP	ON—OFF
SW3	DISC NUMBER	ON—OFF
SW4	PICKUP IN	ON—OFF
SW701	CD	ON—OFF
SW702	TAPE	ON—OFF
SW703	TUNING DOWN	ON—OFF
SW704	MEMORY/SET	ON—OFF
SW705	REV	ON—OFF
SW706	FF	ON—OFF
SW707	PLAY	ON—OFF
SW708	STOP	ON—OFF
SW710	REC	ON—OFF
SW711	TUNING UP	ON—OFF
SW712	VIDEO	ON—OFF

REF. NO	DESCRIPTION	POSITION
SW713	TUNING	ON—OFF
SW714	DIMMER	ON—OFF
SW715	X-BASS	ON—OFF
SW716	EQUAL	ON—OFF
SW717	NORMAL	ON—OFF
SW718	PHANTOM	ON—OFF
SW719	BY-PASS	ON—OFF
SW720	ON/STAND-BY	ON—OFF
SW721	CLOCK	ON—OFF
SW722	TIMER	ON—OFF
SW728	DISC 1	ON—OFF
SW729	DISC 2	ON—OFF
SW730	DISC 3	ON—OFF
SW731	DISC SKIP	ON—OFF
SW732	OPEN/CLOSE	ON—OFF

FRONT

FRONT

VIEW

FRONT

VIEW

VIEW

E

C B

(S) (G) (D)

(1)

(2) (3)

B C E

KTA1266 GR

KTA1273 Y

KTD2026 Y

KRC102 M

KTC3203 Y

4204SRT7

KRC104 M

KTC3199 GR

4204UYT7

KTA1271 Y

KTC107 M

KTA1274 Y

2SC3203 Y

KTC3194 Y

Figure 20 TYPES OF TRANSISTOR AND LED

– 16 –

CD-DP2500W/DK2500W

	CD DIGITAL OUT
		IC99			TO MAIN SECTION
					(TO IC601)
CNS99	1	2	3	CH-R	AGND	CH-L	DGND	+B6(+5V)
CNP5	1	2	3	1	2	3	4	5	CNP11

Q2

				TO DISPLAY SECTION
	CDINT	WRQ	DRF	CE	DO	DI	CLK	CD RES	CLAMP SW	GND	CNP12
	1	2	3	4	5	6	7	8	9	10

SW1		SW2	SW3
OPEN/	CLAMP		DISC
CLOSE			NUMBER
					M	M3
						T/T
						UP/DOWN
						MOTOR
			+			-
1	2	3	4	5	6	BI4
1	2	3	4	5	6	CNS4
1	2	3	4	5	6	CNP4

	37		75	76			45	46	47	48	32	31	30
65	CE	DOUT	CONT6	CONT7			LCHO	LVSS	RVSS	RCHO	CONT4	CONT3	CONT2	74
66	CL													64
67	DI													40
68	DO													19
69	INT							IC2						13
														3
70	WRQ						LC78641E
						SERVO/SIGNAL
71	RES						CONTROL						CONT5	33
72	DEF												SLD0	26
52	XOUT												SPD0	25
XL1														24
16.9344MHz			VVDD	ADAVDD	VDD	LVDD	RVDD	XVDD		HFL	RFEV	FE	FD0
51	VDD5V												TE
	XIN												TD0	23
	73		5	18	36	44	49	50		7	14	15	16
	+5V				+3.3V

															1	2	17	25	41	42	38	39
CONSTANT	Q1				17	18	19	20	21	22
VOLTAGE					HFL	TE	TE-	FE	FE-	RFEV
														18	VCC1				IC3
+3.3V	30													40	VCC4			M63001FP
																	FOCUS/TRACKING/
						IC1								24	VCC2		SPIN/SLIDE DRIVER
													+5V
					LA9235M						LASER			23
	23
					SERVO AMP.						DRIVER
	11										Q3			28	VCC3
												+3.3V
	9	FIN1	FIN2	TIN1	TIN2			LDD							4	5	6	7		15	16	26	27
							PD
		1	2	3	4		7	8
	+5V
												M1	M
												SPINDLE
PICKUPUNIT										FOCUSCOIL	TRACKINGCOIL	MOTOR
												M2	M
												SLED

MOTOR

35

29

22

21

14

8

SW4

PICKUP IN

Figure 21 BLOCK DIAGRAM (1/3)

– 17 –

CD-DP2500W/DK2500W

IC301

FM FRONT END

SO301

1

2

3

4

5

6

7

8

9

FM ANTENNA

FM IF

FM IF

+B9

FM 75Ω

BF301

CF303

+B9

T302

GND

FM B.P.F.

Q302

AM IF

FM RF

FM OSC

FM IF IN

T351

CF352

MONO/ST

OSC BUFFER

FM+B

L312

T301

1

2

4

5

9

13

AM MIX

AM IF GND VCC

MO/ST

IC303

L 14

LA1832

R 15

FM/AM IF MPX.

FM/AM

24

23

21

7

9

FMDET

8

17

12

OSCAMIN

OSCAMIN

RFAMIN

STEREO

+B9

CF351

X351

456KHz

AM LOOP

ANTENNA

CNP301

AM ANT.

AM OSC

X352

IN

IN

1

T303

T306

+B9

4.5MHz

FM

AM

CE

DO

2

+B5

DI

CL

VOLTAGE

20

1

22

15

16

9

11

3

4

5

6

OSC

IC302

REGURATER

FM +B

Q360

7 FM

LC72131

17

+B5

VOLTAGE

PLL (TUNER)

10

21

REGULATOR

ICK1

+B9

JK1

M65856P

MIC 1

KARAOKE

LATCH 40

ROUT 35

QK2,3

LOUT 36

JK 2

MIC1 IN

LIN 31

MIC 2

4

RIN 32

MIC2 IN

9CLOCK 41 DATA 42

7

VCC 23

QK1

+B5

IC201

+B5

VRK 2

8

BU4066BC

MIC 2

12

SWITCHING

8 17

24

1

2

23

LEVEL

13

L

CL

DI

CE

1

2

VIDEO

L 9

22

R

VRK 1

3

9

R 16

L

8

4

IC401

MIC 1

10

11

LEVEL

R

TAPE

L 10

LC75341

JK201

21 R

R 15

CD-DK2500W ONLY

VIDEO IN

+B5

14

TUNER

AUDIO PROCESSOR 4

L

6 12 5 13

L 11

1

7

Q403

R 14

FROM CD SECTION

Q404

CD

L 12

2

CNP11

IC101

R 13

3

AN7345K

17

8

7

18

TAPE MECHANISM Ass'y

CNS401

PLAYBACK AND RECORD

/PLAYBACK AMP.

L-CH

L(T1)

1

13

+B5

TAPE 1

R(T1) 24

P.B.

PB HEAD

R-CH

L(T2)

2

4 L

PB

REC

21 R

R(T2) 23

REC

SWITCHING

L NF 3

L-CH

P.B

Q103~Q106

R NF 4

TAPE 2

POP REDUCE 6

T1/T2

H/N

7

L REC

R-CH

Q501

REC/PB HEAD

L REC 9

REC

18

R

L 74

Q502

AC BIAS

R REC 16

8 L NF

75 R

2

1

REF 14

17 R NF

34

24

MOTOR

IC501

DRIVER

12

NOR/

10 ALC

38

9

MM1

T1/T2

M62464AFP

TAPE

M

Q706

+B4

HIGH

DOLBY PRO LOGIC

3

MOTOR

15

19

DECORD

SOLM1,SOLM2

Q704

+B4

21

69

25

SOLENOID

Q705

T1/T2

SWM2

IC701

T2 PLAY

54PIN

SWITCHING

SWITCHING

SWM1

IC701

Q107

Q111

+B5

T1 PLAY

53PIN

Q108

SWM4

IC701

R. PLAY

56PIN

Q109

Q110

SWITCHING

SWM3

IC701

F. PLAY

55PIN

SWITCHING

BAIS

BIAS

ERASE

OCS

Q128

Q124

Q126

BAIS

L104

HEAD

Figure 22 BLOCK DIAGRAM (2/3)

– 18 –

TAP MECHA

Z

CD-DP2500W/DK2500W

FL701

DISPLAY

+B7

1 2 3	6 ~ 14 33 ~ 53	27 ~ 32	15 16 24 25 26	54 55 56	+B7
				Q701		18	IC702	LED711~LED717
				Q702
							BU2092F
				Q703
				Q710
				Q711
				Q712
							17
							VOLUME
							VR701
	92 ~100 60 ~ 78	80 ~ 85	REQ
47 52 53 5455 3738			6	79

	50
	51
TAPE	53
MECHANISM	54
+B7	55
	56
RESET	46	VDD		IC701
IC704				IX0334AW
KIA7042P
		SYSTEM MICROCOMPUTER
	40
	39
+B7	36				VDD
1	34	AVDD			LATCH
					MIC IN
RX701 3	33			SMUTE
					VDD
2	31
	32
+B7		2 27 ~ 30	25	20 19 1817 15 41	13 12 11 10 9 8 7 24 23 22 21 1
KEY
SW701~SW713		–B1	4	IC601
SW714~SW722
SW728~SW733				IC602	Q709
			8	IC603	XL701
		+B4	KIA4558P
			OPE AMP.

+B7	18	IC703
		BU2092F	LED701~LED710
	12		LED718
		17

86

~

91

16 +B7

57

58

	+B7
	MEMORY
	BACK UP
TO CD	+B6
SECTION
Q910	M FANM901MOTOR

+B3

Q503

JK601

Q504

HEADPHONES

5

Q401

Q402

L

IC901

FRONT

RL902

1

STK40271

15

7

L-OUT

R

POWER AMP.

10

R-OUT

L-ch

Front

L

IC902

+B1

4

PT801

L

13

D801

POWER

R-ch

Speaker

1

STK40203

–B1

8

TRONSFORMER

7

15

POWER AMP.

10

9

F801

(MAIN)

RL901

Center

R

+B2

4

R

T5A L 250V

–B2

Speaker

8

D802

L-ch

9

F802

Rear

13

T5A L 250V

REC

F803

230-240V

R-ch

Speaker

+B4(M+10V)

Q823

T4A L 250V

220V

–B3(–15V)

SO901

F804

127V

Speaker Terminal

KIA7810AP

VOLTAGE

+B3

T4A L 250V

(A+10V)

REGULATOR

501

+B5

110V

IC802

502

VOLTAGE

D803

VROAD

KIA7805AP

(CD+5V)

REGULATOR

~D806

F805

+B6

IC801

T2A L 250V

(UNSW+5V)

AN78L05

T.F

SW801

IC804

VOLTAGE

VOLTAGE

+B2

SELECTOR

REGULATOR

ZD801

Q804

D807

~D809

T1/T2

D818

VF1

VF2

RL801

+B8

(SW+5V)

AC POWER

SUPPLY CORD

Q803

BAIS

AC 110/127/220/230-240V,

50/60Hz

PT802

D814~D817

POWER

TRONSFORMER

Figure 23 BLOCK DIAGRAM (3/3)

– 19 –

CD-DP2500W/DK2500W

A

B	Vcc	7
	Vref	6
	E	5
	A
		4
	B	3
	F
		2
	C	1

C

D

E

		TR-	1
	TR+
		TR+	2
	FO+	FO+	3
		FO-	4
		GND	5
	FO-
F			6
	TR-	PD
		VR	7
	ACTUATOR	LD	8

PICKUP UNIT(306)

G

CD MOTOR PWB-D

			CNP3A
	M1	+	6
	SPINDLE	M
	MOTOR		5
		-
	M2	+	4
	SLED	M	3
	MOTOR	-
	SW4		2
	PICKUP IN		1

H

CD SERVO PWB-C

CNS1B

CNS1A

8

+B

7

7

7

R50

47

6

6

6

TIN1

5

5

5

R51

68K

FIN1

4

4

4

R52

68K

C23

R12

3

3

3

R53

68K

FIN2

0.047

680

TIN2

2

2

2

R54

68K

IC1

R79

1.5M

R56

R55

LA9235M

C11

C24

1

1

1

68K

68K

SERVO AMP.

47/6.3

2.2/50

FIN1

VCC

C21

CNP1

1

30

REF

ODRV

C12

C25

0.022

100P

0.1

R11

C22

FIN2

29 RFSW

0.022

12K

2

REF

R42

R7

C18

R10

R80

REF

120K

AGCON

6.8K

3P

27K

1M

TIN1

28 RF-

3

(CH)

C54

C55

R5

R6

C20

REF

39K

27K

47/10

0.01

0.1

R15

TIN2

REF

27 RF

5

4

PH

R8

C6

REF

26

NC

330

10K

100/10

C13

REF1

PH

C17

C7

5

25

0.01

C26 0.047

C8

VREF

REF

DH

C14

0.0047

68P

6

24 BH

10/35

C42

0.022

7

ODRV

23

0.33

LDD

APC

+B

8

22 RFEV

PH/BH

R3

GND

9

REF

21

FE-

LPF

47K

LDON 10

REF

REF

20 FE

C53

C51

11

ODRV

LPF

19 TE-

R4

+B

0.001

47/6.3

AGON 12

AGCON

18

TE

10K

R25

REF

REF

EFBL

HFL

C82

C28

13

17

10K

REF

0.022

47/10

R47

REF

TEST0 14

LPF

16

TEST

3.3

C41

TES1

REF

15

4

100/6.3

2

Q3

KTA1266 GR

LASER DRIVER

13

C52

0.01

+B

+B

TDO

TO

1

-

+

42

LD_M+

-

TR-

FDO

FD

+

-

+

LD_M-

1

1

1

2

+

41

-

VCC4

+B

2

2

2

TR+

C46

FO

3

-

+

40

+

-

FO+

0.022

FO+

-

LOADING M+

3

3

3

4

+

39

LOADING M-

4

4

4

FO-

FO-

5

38

5

5

5

GND

TR+

6

37

6

6

6

PD

TR-

7

M63001FP FOCUS/TRACKING/ DRIVERSPIN/SLED

36

C47

IC3

100/6.3

CNS2B

CNS2A

VR

7

7

7

8

35

LD

8

8

8

9

34

CNP2

10

33

GND 11

32 GND

12

31

13

30

14

29

SL-

15

28 VCC3

SL+

16

-

27 SP-

SLDO

-

SP+

17

+

26

+B

+

VCC1 18

+

-

25 SPO SPDO

STANDBY

-

-

+

24 VCC2(SPN)

R48

19

+

+

6.8K

Vref

20

-

23

+

MUTE

-

+

CNS3B

CNS3A

C49

100/6.3

21

-

22

C50

100/6.3

	6	6	6	SP-
				SP+
	5	5	5
	4	4	4	SL+
					+B	+B
	3	3	3	SL-
				PUIN
	2	2	2
	1	1	1	GND(D)
				CNP3

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

2

3

4

5

6

Figure 20 SCHEMATIC DIAGRAM (1/13)

– 20 –

CD-DP2500W/DK2500W

CD SIGNAL

3

DISC NO

C71

100P

R71

1K

DRF

C72

0.01

R72

1K

RES

R94

O/C

C73

100P

R73

1K

WRQ

C74

100P

R74

1K

INT

10K

C75

100P

R75

1K

DO

R95

1K

1K

C76

100P

R76

1K

DI

10K

R77

1K

8

C77

100P

CL

+B

R68

R67

C78

100P

R78

1K

CE

+B

CONT7

CONT6

+B

DIGITAL OUT PWB-A5

DEFECT

FSEQ

V/vP

VSS

C80

DEF

RES

WRQ INT

DO

DI

CL

CE

L62

0.022

2.2 H

99

7

EFMO

VDD5V

1

2

3

77

76

74

C44

IC

C23

R12

80

79

78

75

73

72

71

70

69

68

67

66

65

0.022

0.047

680

PD01

1

C98

COMMAND

GENERAL

0.022

R79

INTERFACE

C45

R13

C99

1.5M

100/6.3

C24

680 PD02

2

IC2

SBCK

100/10

64

2.2/50

VVSS

LC78641E

L99

3

SUBCODE

63

PW

C21

C81

PLL

SERVO/SIGNAL

DECODE

2.2 H

VCEC

FRAME SYNC

CONTROL

CRC

62

SBSY

12

C25

0.022

C22

0.1

0.022

4

DEFECT,PROTECT

BI99

100P

R11

PCKIST

EFM DECODE

61 SFSY

1

2

3

12K

VVDD

5

60 16M

11

R14

CLV

R10

R80

FR

6

CONTROL

59 DATA

CNS99

27K

1M

1.2K

SERIAL

10

1

2

3

HFL

7

OUT

58 DATACK

C20

SLCIST

8

57 LRSY

0.1

R15

SLCO

SLICE

56 ASDFIN

R8

9

LEVEL

EXTERNAL

AUDIO IN

330

10K

EFMIN 10

CONTROL

55 ASDACK

C17

C26 0.047

C27

JITTV

11

JITER

54 ASLRCK

0047

C42

0.1

JITTC 12

DEFECT

53 XVSS

68P

CONTROL

SW

INTERPOLATION MUTE ATTENUATION

BH 13

DEEMPHASIS

CLOCK GENERATOR

52

XOUT

R20

C35

PH(RFENV)

220

14

AUTO

XL1

8.2P

SERVO

16.9344MHz

FE 15

SW

A/D

ADJUST

PROCESSEROR

51 XIN

+B

C36

TE 16

50 XVDD

C34

10P

VREF 17

DIGITAL

FILTER

49 RVDD

+B

0.022

ADAVDD 18

48 RCHO

C38 10/16

R82

R83 R84

10K 10K

R-CH

1

C82

C28

C29

+

47

RVSS

C40

AGND

2

2.2K

P24 5 - H

0.022

47/10

0.022

-

1BIT

DAC

LPF

0.0015

C41

ADAVSS 19

46 LVSS

C43

L-CH

3

CNS401

PHREF

20

45

LCHO

0.0015

DGND

4

TO MAIN PWB

100/6.3

2

LVDD C39

R81

BHREF

21

44

+5V

5

GENERAL

10/16 +B

2.2K

+B

TBLO

22

S/H

D/A

ERROR

AUDIO

43 MUTER

C56

CNP11

TDO

23

CORRECT

OUT

42 MUTEL

R44

LASER

CONT1

CONT2

CONT3

CONT4

CONT5

EFLG

330/6.3

FDO

24

1K

FSX

41 EMPH

R19 47

C83

0.022

SPDO

25

26

34 35

36

37 38

1

R35

1

SLDO

FG(D Vref)

27 28

29 30

31 32

33

39

40

TEST

+B

+B

PCK

C2F

VDD DOUT

2

13

1K

R39

1.2K

1.2K

3

R38

470

1K

1K

C30

R87

270

0.022

9

120

CNP5

SPDO

SLDO

TDO

FDO

6

C31

R40

R45

R46

R17

100/6.3

CONSTANT VOLTAGE

+B

R16

L61

+B

+B

R58

220

10K

0.82 H

Q1

INT

KTC3203 Y

1

CDINT

+B

+B

WRQ

2

WRQ

C64

47/6.3

ZD61

DRF

3

DRF

DZ3.9BSB

CE

4

CE

+B

+B

DO

5

DO

P29 9 - A

DI

CNS701

NG M+

6

DI

TO DISPLAY PWB

NG M-

R21

R22

CL

7

CLK

470

470

RES

8

CD RES

C47

D21

D22

9

CLAMP SW

100/6.3

DS1SS133

DS1SS133

10

GND

2

3

CNP12

Q2

1

KRC102 M

O/C

CNS4

BI4

SW1

1

1

1

OPEN/

PDO

2

2

2

CLOSE

SW2

GND(D)

SPN)

3

3

3

CLAMP

DISC_NO

SW3

4

4

4

DISC

M+

5

5

5

+

NUMBER

M-

M

M3

6

6

6

-

T/T

UP/DOWN

CNP4

LOADING

CD LOADING

+B

MOTOR PWB-F

• The numbers 1 to 13 are waveform numbers shown in page 43.

7

8

9

10

11

12

Figure 21 SCHEMATIC DIAGRAM (2/13)

– 21 –

CD-DP2500W/DK2500W

A

MIC SIGNAL

PLAYBACK SIGNAL

R174

RECORD SIGNAL

150

C109

Q110

C153

0.047

2

KRC104 M

100/16

R114

10K

3

R113

1

10K

R115

B

4.7K

1

2

3

Q109

Q111

TAPE MECHANISM ASS'Y(210)

KTA1266 GR

R112

KRC104 M

15K

TAPE1

R120

R102

56

PLAYBACK HEAD

C116

1K

CNP101 C102

47/25

R-CH

TAPE1_R

3

3

0.001

A_GND

C

2

TAPE1_L

2

C101

C118

C120

L-CH

1

1

0.001

0.033

560P

CNS101

R101

1K

R122

R118

C114

100K

Q104

R108

47K

C108

0.001

1K

C112

330P

2SC1845 F

C106

330P

TAPE2

180P

R104

RECORD/

24

23

22

2

PLAYBACK HEAD

CNS102

2.2K

D

R106

-

112K

ERASE

1

1

M_GND 1

3.3K

R110

4.7K

GR

+

HEAD

2

2

ERASE

2

Hich=T1

TAPE2_R1

Q108 KTC3199

1

2

3

4

3

3

TAPE2_R2

3

Q106

+

-

112K

A_GND

2SC1845 F

R-CH

4

4

4

TAPE2_L1

5

L-CH

5

5

6

C111

TAPE2_L2

6

6

7

330P

Q105

R117

C113

CNP102

KTC3199GR

1K

330P

R121 R123

2SC1845 F

C105

R105

R109

4.7K

Q107

IC101

100K

3.9K

C117

560P

180P

3.3K

PLAYBACK AND

E

AN7345K

C119

R103

C107

0.001

RECORD/

0.033

PLAYBACK AMP.

C115

47/25

2.2K

C121

R107

47K

47/25

2SC1845 F

56

Q103

R119

F

R111

15K

MAIN PWB-A1(1/3)

G

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

2

3

4

5

6

Figure 22 SCHEMATIC DIAGRAM (3/13)

– 22 –