Sharp CDXP-125-V Service manual

Name: Sharp CDXP-125-V
Brand: Sharp
SKU: 2360666
Rating: 5 (1 reviews)

5 (1)

CD-XP125V

No. SY296CDXP125V

Page

SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2

VOLTAGE SELECTION..................................................................................................................................................... 2

AC POWER SUPPLY CORD

AND AC PLUG ADAPTOR ................................................................................................. 2

SPECIFICATIONS ............................................................................................................................................................. 3

NAMES OF PARTS ........................................................................................................................................................... 4

DISASSEMBLY.................................................................................................................................................................. 6

REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 8

ADJUSTMENT ................................................................................................................................................................. 10

TEST MODE .................................................................................................................................................................... 13

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 15

TYPES OF TRANSISTOR AND LED............................................................................................................................... 15

BLOCK DIAGRAM ........................................................................................................................................................... 16

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 22

VOLTAGE ........................................................................................................................................................................ 45

FUNCTION TABLE OF IC................................................................................................................................................ 46

FL DISPLAY..................................................................................................................................................................... 56

REPLACEMENT PARTS LIST/EXPLODED VIEW

SERVICE MANUAL

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

SHARP 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

NTSC/PAL

VIDEO CD MINI SYSTEM

MODEL CD-XP125V

CD-XP125V Video CD Mini System consisting of CD-XP125V

(main unit) and CP-XP125 (speaker system).

CD-XP125V

– 2 –

SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS

THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER

COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS

IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES

AGAINST EXPOSURE TO THE LASER BEAM.

1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC IN POSITION AND THE

PICKUP IS ON THE OUTER EDGE 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 UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY

PRESET BEFORE SHIPMENT.

DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.

3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.

4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE

SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage

as follows.

Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).

VOLTAGE SELECTION

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCE0002SJ00

Laser Diode Properties

Material: GaAIAs

Wavelength: 780 nm

Emission Duration: continuous

Laser Output: max. 0.6 mW

QACCA0002SJ00

QPLGA0250AFZZ

QPLGA0253AFZZ

– 3 –

CD-XP125V

General

Amplifier

Video CD

CD player

Tuner

Cassette deck

Power source AC 110/127/220/230 - 240 V, 50/60 Hz

Power

consumption

66 W

Dimensions Width: 270 mm (10-5/8")

Height: 305 mm (12")

Depth: 343 mm (13-1/2")

Weight 6.9 kg (15.2 lbs.)

Output power MPO: 60 W (30 W + 30 W) (10 % T.H.D.)

RMS: 40 W (20 W + 20 W) (10 % T.H.D.)

RMS: 30 W (15 W + 15 W) (0.9 % T.H.D.)

Output terminals Speakers: 8 ohms

Headphones: 16 - 50 ohms (recommended:

32 ohms)

Video out: 1 Vp-p (75 ohms)

Input terminals Microphone: 1 mV/600 ohms

Video output

format

PAL/NTSC

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)

Frequency range FM: 88 - 108 MHz

AM: 531 - 1,602 kHz

Frequency

response

125 - 8,000 Hz (Normal tape)

Signal/noise ratio 50 dB (TAPE 1, recording/playback)

50 dB (TAPE 2, playback)

Wow and flutter 0.3 % (WRMS)

Type 2-way type speaker system

Tweeter

10 cm (4") Woofer

Maximum input

power

40 W

Rated input power 20 W

Impedance 8 ohms

Dimensions Width: 200 mm (7-7/8")

Height: 305 mm (12")

Depth: 167 mm (6-9/16")

Weight 2.4 kg (5.3 lbs.)/each

SPECIFICA TIONS

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

TO THE OPERATION MANUAL.

Specifications for this model are subject to change without

prior notice.

CD-XP125V

CP-XP125

CD-XP125V

– 4 –

NAMES OF P ARTS

Front panel

1. Disc Tray

2. Timer Set Indicator

3. Video CD Playback Control Button

4. Video CD On Screen Display On/Off Button

5. On/Stand-by Button

6. Video CD Digest/Time Search Button

7. Video CD Skip or Previous,

CD/MP3 Disc Track Down or

Fast Reverse, Tuner Preset Down Button

8. Headphone Socket

9. Video CD Stop or Return,

CD/MP3 Disc Stop Button

10. Video CD/CD/MP3 Disc Play or Repeat Button

11. Microphone Level Control

12. Microphone Socket

13. Tape 1 Cassette Compartment

14. Video CD/CD/MP3 Disc Button

15. Tuner (Band) Button

16. Tape Button

17. Video CD Skip or Next, CD/MP3 Disc Track Up or

Fast Forward, Tuner Preset Up Button

18. Equaliser Mode Select/Extra Bass/

Demo Mode Button

19. Disc Tray Open/Close Button

20. Disc Skip Button

21. Volume Up and Down Buttons

22. Tuning Up Button

23. Tuning Down Button

24. Tape 2 Cassette Compartment

25. Tape 1 Record Button

26. Tape 1 Play Button

27. Tape 1 Rewind Button

28. Tape 1 Fast Forward Button

29. Tape 1 Stop/Eject Button

30. Tape 1 Pause Button

31. Tape 2 Play Button

32. Tape 2 Rewind Button

33. Tape 2 Fast Forward Button

34. Tape 2 Stop/Eject Button

26 27 28 29 30 31 32 33 34

Display

1. Disc Play Indicator

2. Disc Repeat Play Indicator

3. FM Station Indicator

4. AM Station Indicator

5. Disc Number Indicators

6. Clock Indicator

7. Sleep Indicator

8. Timer Play Indicator

9. Tape 1 Record Indicator

10. Disc Pause Indicator

11. FM Stereo Mode Indicator

12. MP3 Disc Indicator

13. FM Stereo Receiving Indicator

14. Memory Indicator

15. Disc Random Play Indicator

16. Extra Bass Indicator

1 2 3 4 11 12 13

78910 16

CD-XP125V

– 5 –

CD-XP125V

Remote control

1. Remote Control Transmitter

2. On/Stand-by Button

3. Disc Direct Search Buttons

4. Video CD Playback Control Auto/Off Button

5. Disc Number Select Buttons

6. Video CD On Screen Display On/Off Button

7. Video CD Digest/Time Search Button

8. Volume Up and Down Buttons

9. Video CD Skip or Previous, CD/MP3 Disc Track Down or

Fast Reverse, Tuner Preset Down Button

10. Extra Bass Button

11. Video CD/CD/MP3 Disc Button

12. Tuner (Band) Button

13. Tape Button

14. PAL/NTSC Select Button

15. Audio Mode Button

16. Video CD Auto/On Button

17. Memory/Set Button

18. Video CD Skip or Next, CD/MP3 Disc Track Up or

Fast Forward, Tuner Preset Up Button

19. Disc Random Button

20. Disc Pause Button

21. Video CD Stop or Return, CD/MP3 Disc Stop Button

22. Video CD/CD/MP3 Disc Play or Repeat Button

23. Clear Button

24. Equaliser Mode Select Button

25. Clock Button

26. Timer Button

27. Sleep Button

24 25 26 27

21 22 23

Buttons with " "mark in the illustration can be operated on the re-

mote control only.

Rear panel

1. Video Output Socket

2. AC Voltage Selector

3. AC Power Input Socket

4. Transport Screw

5. FM 75 Ohms Aerial Terminal

6. FM Aerial Earth Terminal

7. AM Loop Aerial Socket

8. Span Selector Switch

9. Speaker Terminals

1. Tweeter

2. Woofer

3. Bass Reflex Duct

4. Speaker Wire

CP-XP125

CD-XP125V

– 6 –

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling

the unit and reassembling it, to keep it safe and ensure

excellent performance:

1. Take cassette tape and compact disc out of the unit.

2. Be sure to remove the power supply plug from the wall

outlet before starting to disassemble the unit.

3. Take off nylon bands or wire holders where they need to

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.

Figure 6-2

Figure 6-1

Figure 6-3

CD-XP125V

1 Top Cabinet 1. Screw ...................... (A1) x5 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

open the disc tray, take out

the CD tray cover, and close.

2. CD Tray Cover........ (C1) x1

4. Screw ...................... (C2) x2

3. Hook........................ (C3) x2

4. Socket ..................... (C4) x3

4 Rear Panel With 1. Screw ...................... (D1) x6 6-2

Video Out PWB 2. Socket ..................... (D2) x1

5 Main PWB 1. Screw ...................... (E1) x7 6-2,6-3

2. Socket ................... (E2) x11 6-3

6 Front Panel 1. Screw .......................(F1) x3 7-1

2. Hook.........................(F2) x2

3. Socket ......................(F3) x1 6-3

7 Switch A PWB 1. Screw ...................... (G1) x3 7-2

2. Socket ..................... (G2) x1

8 Decode PWB 1. Screw ...................... (H1) x2 7-1

2. Socket ..................... (H2) x1

3. Flat Cable ............... (H3) x1

9 Display PWB 1. Screw .....................(J1) x10 7-2

10 Tape Mechanism 1. Open the cassette holder. 7-2

2. Screw...................... (K1) x8

Headphones PWB

1. Screw ........................ L1) x1 7-2

Mic PWB

1. Screw ......................(M1) x2 7-2

13 Turntable 1. Screw ...................... (N1) x1 7-3

2. Spacer..................... (N2) x1

14 Loading Tray 1.

Push forward the loading tray.

7-3

Inserting the flat head into the

hole, push in the direction indi-

cated by the arrow. ...

(P1) x2

15 CD Servo PWB 1. Screw ...................... (Q1) x3 7-4

(Note 1) 2. Socket ..................... (Q2) x5

16 Switch B PWB 1. Screw ...................... (R1) x2 7-4

17 CD Mechanism 1. Screw ...................... (S1) x4 7-5

2. Spring...................... (S2) x4

STEP

REMOVAL PROCEDURE FIGURE

Note 1:

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 electro-

static damage.

CD-XP125V

CD Player

Unit

Main PWB

Washer

Rear

Panel

Pull

Front

Panel

(E1)x3

ø3x10mm

(E1)x2

ø3x8mm

(C2)x2

ø3x5mm

(D1)x6

ø3x8mm

(C3)x1

(C1)x1

(C3)x1

(C4)x1

(D2)x1

(C4)x1

Front

Panel

Main PWB

Decode PWB

Power

PWB

(E2)x2

(E2)x4

(E2)x1

(E2)x3

(E1)x2

ø3x10mm

(F3)x1

(E2)x1

Rear

Panel

Side Panel

(Right)

Side Panel

(Left)

Top Cabinet

Front

Panel

(A1)x2

ø3x16mm

(A1)x2

ø3x16mm

(B1)x2

ø3x10mm

(B1)x2

ø3x10mm

(B1)x2

ø3x8mm

(A1)x1

ø3x8mm

– 7 –

CD-XP125V

Figure 7-1

Figure 7-2

Figure 7-3

Figure 7-4

Front

Panel

Decode PWB

Power

PWB

(F2)x1

(H2)x1

(H3)x1

(F1)x3

ø3x6mm

(H1)x2

ø3x6mm

(J1)x10

ø2.5x10mm

(K1)x8

ø3x10mm

(L1)x1

ø2.5x10mm

Display PWB

Switch A

PWB

Headphones

PWB

Open

Cassette

Holder

Tape

Mechanism

Front Panel

(G1)x3

ø2.5x10mm

(G2)x1

Mic

PWB

(M1)x2

ø2.5x10mm

(Q2)x1

(Q2)x2

(Q2)x1

(Q1)x3

ø3x24mm

CD Servo

PWB

Switch B

PWB

Tray

(R1)x2

ø3x8mm

(S1)x4

ø2.5x8mm

(S2)x4

CD Mechanism

Loading Tray

CP-XP125

This speaker CP-XP125 is available in assembles only and

may not be disassembled.

(N2)x1

(P1)x1

(N1)x1

ø3x8mm

Screwdriver

Turntable

Washer

Loading Tray

Figure 7-4

CD-XP125V

– 8 –

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 6 and 10 of the disassembly method to

remove the tape mechanism.

Figure 8-1

Figure 8-2

Figure 8-3

Figure 8-4Figure 8-5

How to remove the record/playback and erase

heads (TAPE 1) (See Fig. 8-1)

1. When you remove the screws (A1) x 2 pcs., the record/

playback head can be removed.

2. Move the hooks (A2) x 2 pcs., toward the center position as

shown in Fig. 8-1 and then lift the erase head.

How to remove the playback head (TAPE 2)

(See Fig. 8-2)

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

head can be removed.

How to remove the pinch roller (TAPE 1)

(See Fig. 8-3)

1. When you remove the screw (C1) x 1 pc., the pinch roller

can be removed.

Note:

When installing the pinch roller, pay attention to the spring

mounting position.

How to remove the pinch roller (TAPE 2)

(See Fig. 8-3)

1. When you remove the screw (D1) x 1 pc., the pinch roller

can be removed.

Note:

When installing the pinch roller, pay attention to the spring

mounting position.

How to remove the tape motor (See Fig. 8-4)

1. Remove the belt.

2. Remove the screws (E1) x 6 pcs., to remove the motor

bracket.

3. Remove the screws (E2) x 3 pcs., to remove the tape motor.

How to remove the belt (TAPE 1)

(See Fig. 8-5)

1. Remove the main belt (F1) x 1 pc., from the tape motor side.

2. Remove the FF/REW belt (F2) x 1 pc.

How to remove the belt (TAPE 2)

(See Fig. 8-5)

1. Remove the main belt (G1) x 1 pc., from the tape motor side.

2. Remove the FF/REW belt (G2) x 1 pc.

Record/Playback

Head

Erase

Head

(A1)x1

ø2x3mm

(A1)x1

ø2x7mm

Hook

(A2)x2

TAPE 1

TAPE 2

(B1)x1

ø2x6mm

(B1)x1

ø2x6mm

Playback

Head

Tape

Motor

(E2)x3

Special Screw

Motor

Bracket

(E1)x2

ø2x4mm

(E1)x2

ø2x4mm

(E1)x2

ø2x4mm

Tape

Motor

Bracket

TAPE 2

Pinch Roller

TAPE 1

Pinch Roller

(C1)x1

ø2x4mm

(D1)x1

ø2x4mm

TAPE 2

TAPE 1

TAPE 2

Main Belt

(G1)x1

TAPE 1

Main Belt

(F1)x1

Tape

Motor

Tape

Motor

REW/FF

Clutch Ass'y

REW/FF

Clutch Ass'y

Main

Belt

(F1)x1

Main

Belt

(G1)x1

REW/FF

Belt

(G2)x1

REW/FF

Belt

(F2)x1

– 9 –

CD-XP125V

How to remove the pickup (See Fig. 9-3)

1. Remove the stop washer (C1) x 1 pc., to remove the gear

(C2) x 1 pc.

2. Remove the screws (C3) x 2 pcs., to remove the shaft

(C4) x 1 pc.

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.

Figure 9-2

CD MECHANISM SECTION

Perform steps 1, 2, 3, 13, 14, 15 and 17 of the disassembly

method to remove the CD mechanism.

How to remove the loading motor

(See Figs. 9-1, 9-2)

1. Remove the screws (B1) x 5 pcs.

2. Remove the belt (B2) x 1 pc.

3. Remove the screws (B3) x 2 pcs., to remove the loading

motor.

Figure 9-1

(B1)x2

ø3x8mm

(A1)x4

ø3x8mm

(B1)x3

ø3x8mm

Tray

(B3)x2

ø2.4x3mm

(B2)x1

(A2)x1

Motor

T/T Up/Down

Motor

(A3)x2

ø2.4x3mm

Figure 9-3

How to remove the T/T up/down motor

(See Figs. 9-1, 9-2)

1. Remove the screws (A1) x 4 pcs.

2. Remove the belt (A2) x 1 pc.

3. Remove the screws (A3) x 2 pcs., to remove the T/T up/

down motor.

(C3)x1

ø2.6x6mm

Mechanism

Stop Washer

(C1)x1

Gear

(C2)x1

Shaft

(C4)x1

Pickup

(C3)x1

ø2.6x6mm

CD-XP125V

– 10 –

Test Stage Frequency Frequency

Display

Setting/

Adjusting

Parts

Instrument

Connection

••

•

AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

*1. Input: Antenna Output: TP302

*2. Input: Antenna Output: TP301

TUNER SECTION

fL: Low-range frequency

fH: High-range frequency

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): T302 *1

Figure 10-2 ADJUSTMENT POINTS

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

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

Specified Value

Tape 1

Specified

Value

Adjusting

Point

Instrument

Connection

Test Tape

Tape MTT-111 Variable 3,000 ± 30 Hz Speaker

speed Resistor in Terminal

motor. (Load

resistance:

6 ohms)

••

• Tape Speed

Figure 10-1

TAPE MECHANISM

Tape

Motor

Variable Resistor in motor

VR351

FM MUTE

Level

T351

AM IF

T302

T306

IC302

IC301

CNP301

AM BAND

COVERAGE fL

AM TRACKING

MAIN PWB

11 12

R381

R356

R357

TP301

TP302

SO302

FM ANTENNA

TERMINAL

Adjusting

Parts

Display

Frequency

• FM Mute Level (FM ST MODE)

Signal generator: 1 kHz, 40 kHz dev., FM modulated

*1. Adjust so that an output signal appears.

98.00 MHz 98.00 MHz VR351*1 Input: CNP301

(26 dBµV) Output: Speaker

Terminal

Instrument

Connection

• FM IF

Notes:

1. Description of the "FM IF Adjustment" is not carried on this

Manual. It is because the IF coil in the FM front end section

has been best adjusted in the factory so that its further

adjustment is not needed at the field. When replacing the

FM front end assembly, no adjustment is needed either.

2. The parts in the FM front end section are prepared in a

complete unit, so you can't obtain each part individually.

– 11 –

CD-XP125V

VIDEO CD SECTION

A-BEX

TEST VIDEO CD

Disc Adjusting

Point

Instrument

Connection

CD Stop TC100V 27.00000 MHz

of R163V and

± 160 Hz

of C183V

••

• Measurement of oscillation frequency

••

• Checking of video output signal

Checking of color bar

Disc Adjusting Point

Instrument

Connection

Track 2 Video output terminal Chroma Peak Level

100 ± 15 IRE

Model No.

TVD-581

TVD-581A

Specified Value

SET

VIideo Output Terminal

75 ohms

GND

Vectorscope

Waveform monitor

or oscilloscope

SET

Video Output Terminal

Video Input Terminal

Color bar signal

waveform

100 100

88.5

41.5

33.5

-13.5

-25 -25

100 IRE

(0.714V)

(1V)

(0.286V)

140 IRE

Horizontal

sync signal

40 IRE

Color Burst

-20

-40

Blue

Red

Green

Magenta

Cyan

Yellow

Gray

(59.94Hz/NTSC)

TV monitor

Blue

Red

Green

Magenta

Cyan

Yellow

Gray

Figure 11-1 ADJUSTMENT POINTS

Figure 11-2 Measurement of oscillation frequency

Figure 11-3 Checking of video output signal

Figure 11-4

Figure 11-5

IC15

IC14

TC100

C183

R163

GND

PCLK2X

VIDEO PWB

CD-XP125V

– 12 –

Checking of vector scope waveform

Checking SettingDisc Checking

Item

Track 2 VIDEO OUT Set the phase of Phase check

color burst signal ± 10°

(B) to 180°-360°

line.

( Check that the setting is within the illustrated range.)

Checking the black-and-white level

Track 16 VIDEO OUT Output level

100 ± 10 IRE

Checking Checking ItemDisc

75%

R-Y

-Q

-I

[NTSC] [PAL]

75%

B-Y

100IRE

40IRE

100% Luminance

Horizontal Interval

reference signal

100% WHITE LEVEL

Figure 12-1

Figure 12-2

– 13 –

CD-XP125V

TEST MODE

PLAY + DISC SKIP test04 TIMER ON/OFF TEST MODE

FL DISPLAY:

STOP + DISC SKIP test05 VFD DISPLAY WINDOW TEST MODE

FL DISPLAY: VFD ALL LIGHT

FUNCTION: TEST THE VFD DISPLAY WINDOW

PLAY + OPEN/CLOSE test08 OPEN/CLOSE & 3 DISC CHANGER AGING TEST

DISPLAY:

FUNCTION: Enter the TEST MODE 8, MCU control the 3 DISC CHANGER OPEN/CLOSE.

After open finished, tray rotate 1 circle (360 degree). Then close, After close

finished, tray rotate 1 circle (360 degree) again.

Request: Every period include 4 operation. Below is TIMING:

Enter test mode

CHANGER

Find the disc 1 position

open

delay 3S after open finish

rotate 1 circle

delay 3S after close finish

rotate 1 circle

CD-XP125V

– 14 –

PLAY + VOLUME DOWN test06 FRONT PANEL KEY TEST

FL DISPLAY:

FUNCTION:

F RONT PANEL KEY TEST MODE,IF ALL KEY HAVE BEEN PRESSED 1 TIME,

THEN

PRESS THE "POWER" KEY, VFD DISPLAY "OK".

PLAY + VOLUME UP test03 VOLUME TEST MODE

FL DISPLAY:

1. TEST 3 DISPLAY 1 SECOND. THEN CHANGE TO CD FUNCTION.

2. IN CD FUNCTION (Pickup IN CHECK DISC1 SW TOC_IL No

DISC RECEIVE OPEN/CLOSE KEY OPEN RECEIVE

OPEN/CLOSE KEY CLOSE)

3. Can change to other function [TAPE/TUNER] FUNCTION KEY PROCESS

SAME AS NORMAL PROCESS.

4. In any function within this test mode VOLUME CONTROL HAS

3LEVEL [0/23/MAX] CANCEL VOL UP/DOWN CONTINUE PROCESS

FUNCTION.

PLAY + TUNER test02 TUNER TEST MODE

FL DISPLAY

FUNCTION STORE 10 PRESET TUNER IN THE MEMORY [AM/FM ST]

FM test use the BAND key change from FM ST.

– 15 –

CD-XP125V

• The indicated voltage in each section is the one measured

by Digital Multimeter between such a section and the chas-

sis with no signal given.

1. In the tuner section,

indicates AM

indicates FM stereo

2. In the main section, a tape is being played back.

3. In the deck section, a tape is being played back.

4. In the power section, a tape is being played back.

5. In the CD section, the CD is stopped.

• Parts marked with “ 1 ” ( ) are important for

maintaining the safety of the set. Be sure to replace these

parts with specified ones for maintaining the safety and

performance of the set.

NOTES ON SCHEMATIC DIAGRAM

• Resistor:

To differentiate the units of resistors, such symbol as K and

M are used: the symbol K means 1000 ohm and the symbol

M means 1000 kohm and the resistor without any symbol is

ohm-type resistor. Besides, the one with “Fusible” is a fuse

type.

• Capacitor:

To indicate the unit of capacitor, a symbol P is used: this

symbol P means pico-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

SW705 TUNER (BAND) ON—OFF

SW706

TUNING DOWN

ON—OFF

SW707 PRESET DOWN ON—OFF

SW708 EQUALIZER/X-BASS/DEMO ON—OFF

SW709 TAPE ON—OFF

SW710 STOP ON—OFF

SW711 VOLUME UP ON—OFF

SW712 DISC SKIP ON—OFF

SW713 OPEN/CLOSE ON—OFF

SW714 PLAY/REPEAT ON—OFF

SW715 VOLUME DOWN ON—OFF

SW716 P.B.C ON—OFF

SW717 O.S.D ON—OFF

SW718 DIGEST ON—OFF

SW801 REC./P.B. ON—OFF

SW1 OPEN/CLOSE ON—OFF

SW2 DISC ON—OFF

SW3 UP ON—OFF

SW4 PICKUP IN ON—OFF

SW5 TAPE 1 PLAY ON— OFF

SW6 TAPE 1 FF/REW ON—OFF

SW7 TAPE 2 FF/REW ON—OFF

SW8 TAPE 2 PLAY ON— OFF

SW101 VOLTAGE SELECTOR 110 V—127 V—

220 V— 230-240 V

SW301 SPAN SELECTOR 50 kHz/9 kHz—

100 kHz/10 kHz

SW701 ON/STAND-BY ON—OFF

SW702 CD ON—OFF

SW703 TUNING UP ON—OFF

SW704 PRESET UP ON—OFF

TYPES OF TRANSISTOR AND LED

REF. NO DESCRIPTION POSITION

(1) (2) (3)

(S) (G) (D)

E C B

FRONT

VIEW

B C E

FRONT

VIEW

2SC1740 SR

2SD1858 R2

KRA102 M

KRC102 M

KRC107 M

KRC104 M

KSA1015 GR

2SD2012 Y SD3210W

FRONT

VIEW

HSB562 C

HSC1609 GR

KSC1815 GR

KSC3203 Y

KSA1271 Y

SC1674 C

CD-XP125V

– 16 –

Figure 16 BLOCK DIAGRAM (1/6)

CD_STB

PICK_IN

LRCK

DGND

/RST

BUS0

BUS1

BUS2

BUS3

BUCK

/CCE

BCK

DATA

TESTO

/HSO

UHSO

EMPH

LRCK

VSS

BCK

AOUT

DOUT

MBOV

IFP

SBOK

CLCK

VDD

VSS

DATA

SFSY

SBSY

SPCY

SPDA

COFS

MONIT

VDD

TESIOO

P2VREF

HSSW

ZDET

PDO

TMAXS

TMAX

LPFN

LPFO

PVREV

VCOREV

VCOF

AVSS

SLCO

RFI

AVDD

RFCT

RFZI

RFRP

FEI

SBAD

TSIN

TEI

TEZI

FOO

TRO

VREF

RFGC

TEBC

FMO

FVO

DMO

2VREF

SEL

FLGA

FLGB

FLGC

VDD

VSS

I00

I01

I02

I03

/DMOUT

/CKSE

/DACT

TESIN

TESI01

VSS

PXI

PXO

VDD

XVSS

XVDD

FLGD

DVSR

DVDD

DVSL

DVR

TEST1

TEST2

TEST3

BUS0

BUS1

BUS2

BUS3

VDD

VSS

BUCK

/CCE

TEST4

/TSMOD

/RST

OP/CL SW

MECHA_UP SW

DISC1_SW

ROTATE

LOAD–

LOAD+

9 10111282134657

100

7980 78

7776 75747372

717069 68 676665 64 636261 60 595857 56 55545352 51

293028272625242322212019181716151413121110

98765432

CNP931B

POWER PWB

CNS933B

POWER PWB

CNS933B

CNS931B

IC402

TC9462F

SERVO DSP

D402

Q408

Q409

Q403

Q410

Q407

D403

Q406

Q402

Q405

– 17 –

CD-XP125V

Figure 17 BLOCK DIAGRAM (2/6)

1234567891011121314

19 20 21 2223 24 252627 2818171615

PU_IN

PO1–

PO1+

VO3–

VO3+

VIN3

VG3

VCC

BIAS

VG4

VIN4

VO4+

VO4–

OPO

VO2–

VO2+

VIN2

VG2

GND

MUTE

REG O

TRB

VG1

VIN1

VO1+

VO1–

CNP932

PU-IN

SL–

SL+

SP–

SP+

–

GND

MON

VCC

–

FO+

TR+

TR–

FO–

ACTUATOR

TR+

FO+

FO–

GND

1/2V

+5V

TR–

1/2VCC

M+

ROTATE+

OP/CL_SW

DISC1_SW

MECHA_UP SW

CD_6.2V

–

PICKUP UNIT

+B7

GH6C605B3A1

Q461

Q401

IC401

TA2109F

SERVO PRE

AMP.

IC404

MM1469XH

FOCUS/TRACKING/

SPIN/SLED DRIVER

CNS932

NM801

SLED MOTOR

NM802

SPINDLE MOTOR

T/T UP/DOWN

MOTOR

CD LOADING

MOTOR

SW1

OPEN/

SW2

DISC

SW3

SW4

PICKUP IN

CD-XP125V

– 18 –

Figure 18 BLOCK DIAGRAM (3/6)

VD_DI

VDAC

VD_DO

DRAS

DWE

DA0

DA1

DA2

DA3

DA4

DA5

DA6

DA7

DA8

VSS

DCAS

TDMDR

TDMCLK

RWS

RBCLK

RSD

BCLK

AUDATA

AUDIOCLK

LA17

LA16

LA15

LA14

LA13

LA12

LA11

LA10

LA9

LA8

LA7

LA6

LA5

LA4

LA3

LA2

LA1

LA0

LSCE0

LSCE1

LROMCE

LOE

LWR

LD7

LD6

LD5

LD4

LD3

LD2

LD1

LD0

AUX7/STB

AUX5

AUX6/SCK

AUX4

DCLK

VCC3

VCC

VCC3

VSS

RESET

VSS

PCLKQSCN

PCLK2XSCN

HSYNC

VSYNC

DBUS0

DBUS1

DBUS2

DBUS3

DBUS4

DBUS5

DBUS6

DBUS7

DBUS8

DBUS9

DBUS10

DBUS11

DBUS12

DBUS13

DBUS14

DBUS15

YUV0

YUV1

YUV2

YUV3

YUV4

YUV5

YUV6

YUV7DRAS1/DOE

D10

D11

D12

D13

D14

D15

A10

A11

A12

A13

A14

A15

A16

VPP

A17

PGM/A18

UCAS

RAS

VSS

VCC

LCAS

VCC

VSS

TDMFS

DSC_STB

AUX1/DSADATA

AUX0/DSAACK

MCLK

TSD

TBCK

TWS

AUX3/VD_DI

AUX2/VD_DO

3940383736353433323130292827262524232221

1920 181716 15 141312 11 10

98765432

100

7980 78 77 76757473 72717069 68 67666564 63 626160 59 58575655 54 535251

293028272625242322212019181716151413121110987654321

Q11

IC10

IX0041SJ

ROM 256Kx16

IC16

IX0025SJ

D-RAM 256Kx16

IC15

ES3880F

VIDEO CD DECODER

Q12

CNP801

– 19 –

CD-XP125V

Figure 19 BLOCK DIAGRAM (4/6)

910111287654321

VDAC

VD_DO

VD_DI

VCCA

AOR+

VCCA

VCC

VSS

VSSA

MIC2

VSSA

VSSAV

COMP

YUV0

YUV1

YUV2

YUV3

YUV4

YUV5

YUV6

YUV7

XIN

XOUT

DSC_D0

DSC_D1

DSC_D2

DSC_D3

DSC_D4

DSC_D5

DSC_D6

DSC_D7

ACAP

SQSO

SQCK

DSC_CLK

DSC_STB

RSET

RST

VCM

VREFP

VREF

MCLK

PCLK

PCLK2X

HSYNC

VSYNC

AOR–

AOL–

RSTOUT

VREFM

TBCK

TSD

TWS

RWS

RSD

RBCK

MIC1

AOL+

CDAC

YDAC

VDAC

AUX0

AUX1

AUX2 AUX3

AUX4

AUX5

AUX7

AUX8

NC/ AUX10

NC/ AUX11

NC/ AUX12

LA18/ AUX13

S_EN/ AUX14

R-CH

L-CH

AUX6

STB

ACK

+5V

VD_DI

+12V

FROM DISPLAY

BUSY

CLID_OUT

VD_DO

AUX9

BUSY/AUX15

100

7980 78 77 76757473 72 717069 68 67666564 63 62616059 58 575655 54 535251

29302827262524232221

201918171615141312111098765432

DATA

BCK

/CCE

BUCK

BUS3

BUS2

BUS1

BUS0

/RST

PICK_IN

LRCK

FROM CD SERVO SECTION

AUX0

EAUX0

EAUX01

EAUX02

EAUX03

EAUX08

EAUX04

VIDEO OUT

SECTION

MAIN

SECTION

POWER

SECTION

VDAC

– +

+ –

+B11

+B10

CNP801

IC14

ES3883F

VIDEO CD ENCODER

IC11

NJM4565M

BUFFER AMP.

CNS802A

CNS802B

CNS802C

CNP804A

CD-XP125V

– 20 –

Figure 20 BLOCK DIAGRAM (5/6)

5 V

11.7

+B11

+B10

SYSTEM

MUTE

Q203

Q204

MO/ST

SWITCHING

+B4

FM/AM

IC302

LC72131

PLL(TUNER)

FM/AM

OUT

+B4

P.B.

REC

AC BIAS

TAPE

TUNER

CNP103

FROM

CD SECTION

CNS103

FROM

DECODE SECTION

CNS802A

ERASE

HEAD

OSC

BIAS

Q801

L801

TAPE 1

PLAYBACK

HEAD

TAPE 2

R-CH

L-CH

R-CH

L-CH

IC601

LC75341M

AUDIO PROCESSOR

P.B

+B4

L REC

L NF

R NF

ALC

REC

T1/T2

REF

R REC

L REC

R NF

L NF

SWITCHING

L(T2)

R(T2)

R(T1)

L(T1)

IC801

AN7345K

PLAYBACK AND RECORD

/PLAYBACK AMP.

IC902

NJM4558D

BUFFER

AMP.

FM/AM

MPXIN

STEREO

AM RF IN

AM OSC IN

SP DET

Q360

FM OSC

OSC BUFF

OSC

X352

4.5 MHz

AM BAND

COVERAGE

AM TRACKING

T302

Q302

X351

456 kHz

MO/ST

VCO

DET

VCC

GND

AM IF

CF351

DZ5.1BSJ

AM IF

IC303

LA1832S

IC303

LA1832S

FM IF DET./

FM MPX./AM IF

AM MIX

CF352

T351

FM RF

OSC

L302

CF303

T302

FM IF

IC301

TA7358AP

FM FRONT END

BF301

1615

IC9

MC78

VOLT

REGUL

+B4

SW801

B, C, D,

F, G

SW801

A, E

JK901

MIC

VR901

MIC VOLUME

+B4

CNP802A

2 6

1 7

+B4

T306

L303

FRO

SEC

CNS

+B3

TAPE

MOTOR

SW5

T1 PLAY

SW6

T1 FF/REW

SW7

T2 FF/REW

SW8

T2 PLAY

CF302

RECORD/

PLAYBACK HEAD

B.P.F

AM LOOP

ANTENNA

CNP301

SO103

VIDEO OUT

SO301

FM ANTENNA

TERMINAL

IC901

NJM4558D

BUFFER

AMP.

Q931

Q932

– 21 –

CD-XP125V

Figure 21 BLOCK DIAGRAM (6/6)

T101

POWER TRANSFORMER

SO101

AC INPUT

6.2 V

5 V

11.7 V

-30 V

SO102

SPEAKER

TERMINAL

+B2

+B4

VDD

VEE

VDD

R-OUT

L-OUT

VF2

VF1

M10 V

+B11

+B10

+B7

-B2

+B5

+B3

+B1

–B1

Q103

TEM

DIN

CD +B

STB

VIDEO +B

CLK

+B4

D112~D115

D934~D937

D108~D111

F931

T2A L 250V

F101

T3.15A L 250V

F102

T3.15A L 250V

VccB

VccA

Vee

IC201

LM1876TF

POWER AMP.

VDD

KEY1

KEY3

KEY

SW702~SW715

FROM CD

SECTION

AC POWER

SUPPLY CORD

AC 110/127/220/

230-240 V,

50/60 Hz

IC701

SC16312

SYSTEM

MICROCOMPUTER

FL701

FL DISPLAY

3332

5251

A12 V

+B4

5.6 V

+B2

IC101

MC7805CT

VOLTAGE

REGULATOR

IC931

MC7805CT

VOLTAGE

REGULATOR

Q104

-B2

JK101

HEADPHONES

CNP105

SP DET

CNP702

CNS105

FROM CD

SECTION

CNS702

Q101

Q109,Q110

Q933,Q934

SW701

VOLTAGE

REGULATOR

VOLTAGE REGULATOR

VOLTAGE

REGULATOR

SW101

VOLTAGE

SELECTOR

220 V

127 V

110 V

230-240 V

Q935,Q936

Q935,

Q936

Q931,

Q932

+ 47 hidden pages