Aiwa CX JV4 Service Manual

CX-JV4

SERVICE MANUAL

Ver 1.2 2004.08

CX-JV4 is the tuner, amplifier , cassette dec k and disc player section in JAX-V4.

Model Name Using Similar Mechanism CX-JV5

CD Section

Tape deck Section

CD Mechanism Type CDM74B-30BD61S Base Unit Name BU-30BD61S Optical Pick-up Name OP Assy (A-MAX.3) Model Name Using Similar Mechanism CX-JV5 Tape T ransport Mechanism T ype CWM43FR16

E Model

TUNER

FM tuning range 87.5 MHz to 108 MHz FM usable sensitivity (IHF) 13.2 dBf FM antenna terminal 75 ohms (unbalanced) AM tuning range Middle Eastern model: 531 kHz to 1602 kHz (9 kHz step) Other models: 530 kHz to 1710 kHz (10 kHz step)

AM usable sensitivity 350 µV/m AM antenna Loop antenna

AMPLIFIER

Power output

Total harmonic distortion 0.08 % (20 W, 1 kHz, 6 ohms, DIN Input VIDEO/AUX: 1.2 V

Outputs FRONT SPEAKER: 6 ohms or more

CASSETTE DECK

Track format 4 tracks, 2 channels stereo Frequency response 50 Hz – 8 kHz Recording system AC bias Heads

531 kHz to 1602 kHz (9 kHz step)

Rated: 80 W + 80 W (1 kHz, T.H.D. 1 %, 6 ohms) Reference: 100 W + 100 W (1 kHz, T.H.D. 10 %, 6 ohms)

AUDIO)

SURROUND SPEAKER (JAX-V5 only): 8 ohms or more PHONES: 32 ohms or more REC OUT: 0.775 V VIDEO OUT: 1 Vp-p (75 ohms)

Deck A: playback x 1 Deck B: Recording/playback x 1,

erase x 1

SPECIFICATIONS

DISC PLAYER

Laser Semiconductor laser (λ = 795 nm)

D/A converter 1 bit dual Signal-to-noise ratio 90 dB (1 kHz, 0 dB) Harmonic distortion 0.05 % (1 kHz, 0 dB) Video signal NTSC/PAL color system (selectable) Video data MPEG1 Audio data MPEG1, Layer2 (VIDEO CD)

GENERAL

Power requirements Power consumption

Power consumption With ECO mode on: 0.25 W in standby mode With ECO mode off: 25 W Dimensions (W x H x D) 280 x 330 x 392.5 mm Weight

Specifications and external appearance are subject to change without notice.

COPYRIGHT

Check copyright laws relevant to recordings from discs, tuner or tape for the country where the unit is to be used.

Licensed by BBE Sound, Inc. under USP4638258, 5510752 and 5736897.

Emission duration: continuous

MPEG1, Layer3 (MP3-CD)

110-120 V/220-240 V AC (Switchable), 50 Hz/60 Hz 130 W

8.1 kg

COMPACT DISC DECK RECEIVER

9-961-182-03 Sony Corporation

CX-JV4

Notes on chip component replacement

•Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

CAUTION

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

This appliance is classified as a CLASS 1 LASER product. This marking is located on the rear exterior.

The following caution label is located inside the apparatus.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

2

SER VICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objectiv e lens.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

RELEASING THE DISC TRAY LOCK

The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.

Releasing Procedure :

While pressing the x key, press the Z OPEN/CLOSE key for 5 seconds. The message “UNLOCKED” is displayed and the tray is unlocked.

Note: When “LOCKED” is displayed, the tray lock is not released by

turning power on/off with the [POWER] key.

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 ˚C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 ˚C. Caution: The printed pattern (copper foil) may peel away if the

heated tip is applied for too long, so be careful!

• Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.

• Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.

4

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.

1

Remove the case (side-L).

2

Turn the loading gear in the direction of arrow A.

A

CX-JV4

3

Pull-out the disc tray.

5

CX-JV4

SERVICE POSITION – CD mechanism deck –

VMP50 board (CN801)

main board (CN691)

Connect wire (flat type) (19 core) to main board (CN691) and VMP50 board (CN801).

– Tape mechanism deck –

panel board (CN601)

Connect wire (flat type) (13 core) to panel board (CN601) and mechanical deck.

main board (CN301)

6

• LOCATION OF CONTROLS

SECTION 2

GENERAL

CX-JV4

This section is extracted from instruction manual.

Refer to the pages indicated in parentheses for details.

1 DISC CHANGE

Rotates the CD trays.

2 POWER 6STANDBY/ON

Switches the unit on and off (standby). The red indicator flashes when receiving a signal from the remote.

3 MODE

Selects various modes (ECO and Repeat/Shuffle/ Programed playback, etc.) when used in combination with ENTER and MULTI JOG.

4 ENTER

Fixes the modes and the time (ECO, Repeat/Shuffle/ Programed playback, clock, and timer, etc.) when used in combination with ENTER and MULTI JOG.

5 MULTI JOG

When used in combination with ENTER and MULTI JOG, CD: selects a track and Repeat/Shuffle/Programed playback. Tuner: selects a preset station. Tape: selects a reverse mode and specifies tape length. Clock and Timer: sets the time. i-Bass: selects a frequency range. Spectrum analyzer, ECO and Dimmer: selects the mode.

6 MIC MIXING

Adjusts the microphone volume.

MIC jack

Connects the microphone here.

7 PHONES jack

Plug in here an optional headphones set with a mini stereo plug (ø3.5 mm). Speaker output is canceled.

8 SYNC DUB

Starts dubbing a whole tape.

wREC/REC MUTING

Starts recording.

9 DISC DIRECT PLAY 1-3

Selects a disc.

0 zOPEN/CLOSE

Opens or closes the disc compartment.

! TAPE A/B

Selects Tape function, and deck A or B.

TUNER/BAND

Selects Tuner function and the radio band.

VIDEO/AUX

Selects the function of external equipment connected to VIDEO/AUX jacks.

CD

Selects CD function.

@ Remote sensor

Receives a signal from the remote.

# VOLUME

Adjusts the volume.

$ TREBLE

Enhances high frequency sound.

% dDIR (TAPE B)/PRESET

When the unit is turned off: activates or deactivates DEMO. CD and Tape: starts playback. Tuner: tunes into a preset station.

sSTOP/CLEAR/vRETURN 18, 20, 24)

CD and Tape: stops playback. Tuner: clears a station preset.

f TUNING DOWN, gTUNING UP

CD: searches a track in fast forward or fast reverse playback when held down. Tape: fast forwards or rewinds the tape. Tuner: manually tunes down or up within the band.

aPAUSE/SET

CD and Tape: pauses playback. Tuner: stores the received station in to preset.

^ BASS

Emphasizes low frequency sound.

& i-Bass

Produces rich and clear low frequency sound.

* DISPLAY

Displays the time and the remaining time for CD.

ALBUM -, +

Selects a previous album or a succeeding album with MP3-CDs.

Refer to the pages indicated in parentheses for details.

1 NTSC/AUTO/PAL switch

Sets the color system of the video signal output via the VIDEO OUT jack. Turn off the power, and then set the switch according to your TV set;

- PAL: When connecting to a PAL system TV.

- NTSC: When connecting to a NTSC system TV.

- AUTO: When connecting to a multi color system TV.

• In case of setting the switch to "AUTO", you need to adjust the color system according to your VCD to play back. Hold down CD button for about 6 seconds in stop mode in CD function, and "PAL" (initial) or "NTSC" appears on the display (except when the loaded disc is MP3-CD). When playing back a PAL VCD, hold down CD and release it when "PAL" appears. When playing back a NTSC VCD, do the same procedure and release it when "NTSC" appears. When the function is changed or the unit is turned off, PAL is resorted.

• This unit does not support color systems other than PAL and NTSC, such as NTSC 4.43 or SECAM.

• If there is a color or picture trouble in the AUTO mode, select NTSC or PAL.

2 AM LOOP,

Plug in the supplied AM and FM antennas here.

FM 75 Ω terminals

3 VIDEO/AUX jacks

Accepts analog sound signals from external equipment. Connect using an optional connecting cable with RCA phono plugs (red plug to R jack, white plug to L jack). Refer also to the operating instructions of your equipment. To switch function to external input, press VIDEO/AUX.

Tip:

To change the displayed name for this function, turn the unit on, then hold down VIDEO/AUX and press POWER on the unit. Repeat the procedure to select "VIDEO", "AUX" or "TV".

REC OUT jacks

Outputs analog sound signals to external equipment. Connect using an optional connecting cable with RCA phono plugs (red plug to R jack, white plug to L jack). Refer also to the operating instructions of your equipment. When the function is set to "VIDEO", "AUX" or "TV", no signal is output from the REC OUT jacks.

4 # SPEAKER terminals

Connect the speaker cord of the supplied front speakers here.

5 VIDEO OUT jack

Outputs video signals. Connect to the video input jack of your TV set with the supplied video connecting cord. Select the appropriate video input on your TV. Refer to the operating instructions of your TV.

6 AC voltage selector

Switches AC voltage according to your local voltage. Make sure it matches your local voltage.

7 AC power cord

7

CX-JV4

Refer to the pages indicated in parentheses for details.

Buttons with the same or similar names as the main unit basically have the same function.

1 POWER 2 1-0/10, +10

CD: selects a CD track of the specified number. Tuner: tunes in to the station with the specified preset number.

The numbered buttons take on these functions below when pressed with SHIFT held down:

EDIT/CHECK

Enters AI Edit Recording or Programed Edit Recording mode when pressed in stop mode.

BAND

Selects Tuner function and the radio band.

TAPE A/B SPECTRUM

Changes the spectrum analyzer display.

TUNER MODE

Switches between stereo or monaural FM reception.

KARAOKE

Selects a Multiplex mode.

PLAY MODE

CD: selects Shuffle, Programmed playback, etc. Tape: selects a reverse mode (deck B only)

REPEAT

Enters CD repeat playback mode.

SLEEP

Switches the sleep-timer on/off and selects the duration.

SOUND

Selects BASS or TREBLE setting mode

ECHO

Adjusts the echo level for CD function.

3 r, t/PREV, NEXT/DIGEST, ZOOM

CD: selects a track. Tuner: selects a preset station. Tape: specifies tape length. VCD: goes to the next/previous page or scene. DIGEST: Activates the Digest playback function when playback a VCD. ZOOM: Enlarge VCD picture during pause. BASS and TREBLE: adjusts the level. Clock and Timer: sets the time.

4 ALBUM -, +/KEY CONTROL ,

MP3: selects a previous album or a succeeding album. CD: adjust the playback sound key for CD function

5 PBC

Manually turns the PBC function on and off for a PBC disc.

MARK

Marks a desired point when playing back a VCD.

ON SCREEN

Displays disc information such as the elapsed playback time on the TV screen.

6 CLOCK/TIMER/SET

Enters timer setting mode.

CLOCK/TIMER/SELECT

Selects timer playback, timer recording or timer off.

7 DISPLAY

8 SHIFT

Hold down when pressing a numbered button to change its function to that printed above the number.

e.g.)

"Press SHIFT+BAND on the remote" indicates "Hold down SHIFT and press '2' (BAND)". Doing so makes you be able to select Tuner function and the radio band.

9 FUNCTION

Switches the active function among CD, TAPE, TUNER and VIDEO (AUX or TV).

0 DISC SKIP

Select a disc.

! c/d

When the unit is turned off: activates or deactivates DEMO. CD and Tape: starts playback.

s

CD and Tape: stops playback.

f,g

CD: searches a track in fast forward or fast reverse playback when held down. Tape: fast forwards or rewinds the tape. Tuner: manually tunes down or up within the band.

a

CD and Tape: pauses playback.

@ SLOW

Plays back a VCD slowly while held down.

# VOLUME +, -

Adjusts the volume.

$ ENTER

CLEAR

Clears a track of the CD programed playback and a Radio preset station.

Use the remote.

1

Press CLOCK/TIMER/SET.

Go to step 3 when the time appears and the 'hour' flashes.

2

Press r or t repeatedly until "CLOCK SET " appears in the display and then press

ENTER.

3

Press r or t repeatedly to set the hour and then press ENTER.

4

Press r or t repeatedly to set the minute and then press ENTER.

The time display stops flashing and the clock starts from 00 seconds.

•MULTI JOG is also available in place of r or t.

To d isplay the time

Press DISPLAY. The time will be displayed for 6 seconds.

Tip:

" AM 12:00 " indicates midnight and " PM 12:00 " noon.

If "- -:- - " appears when the unit is turned off

There has been a power interruption. Reset the clock.

8

• This set can be disassembled in the order shown below.

Set

3-2. CASE

(SIDE-L/R) (Page 10)

3-3. CASE (TOP)

(Page 10)

3-4. TRAY PANEL

(Page 11)

3-6. FRONT PANEL

SECTION (Page 12)

3-8. REAR CABINET

SECTION (Page 13)

3-7. MECHANICAL

DECK (CWM43FR16) (Page 12)

3-9. PT BOARD,

MAIN BOARD (Page 13)

3-14. BD BOARD

(Page 16)

3-13. BASE UNIT

(BU-30BD61S) (Page 15)

3-10. TABLE ASSY

(Page 14)

3-11. MOTOR (TB)

BOARD (Page 14)

3-12. MOTOR (LD)

BOARD (Page 15)

3-5. CD MECHANISM DECK

(CDM74B-30BD61S) (Page 11)

Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed.

3-1. DISASSEMBLY FLOW

CX-JV4

SECTION 3

DISASSEMBLY

9

CX-JV4

s

w

Note: Follow the disassembly procedure in the numerical order given.

3-2. CASE (SIDE-L/R)

5

case (side-L)

1

two case screws

3

2

two screws (BVTP3

×

10)

2

two screws (BVTP3

×

10)

1

case screw

3-3. CASE (TOP)

4

case (top)

4

2

claw

3

1

3

4

case screw

1

5

case (side-R)

1

two screws (BVTP3 × 10)

two case screw

10

2

claw

2

cla

2

claw

3-4. TRAY PANEL

)

1

Turn the loading gear in the direction of arrow

2

Pull-out the disc table.

4

tray panel

A

3

four claws

CX-JV4

.

A

3-5. CD MECHANISM DECK (CDM74B-30BD61S)

5

CD mechanism deck (CDM74B-30BD61S)

1

wire (flat type) (19 core) (CN801)

3

screw (BVTP3

×

10)

2

connector (CN701)

4

three screws (BVTP3 × 10

3

screw (BVTP3 × 10)

11

CX-JV4

3-6. FRONT PANEL SECTION

8

headphone board

7

screw (BVWHTP)

6

connector (CN601)

2

connector (CN302)

1

wire (flat type) (11 core) (CN694)

5

9

front panel section

3-7. MECHANICAL DECK (CWM43FR16)

4

mechanical deck (CWM43FR16)

3

connector (CN301)

4

three screws (BVTP3

×

10)

3

clamp

2

six screws (BVTP3

×

10)

12

5

ground mechanical plate

1

wire (flat type) (13 core)

CX-JV4

)

3-8. REAR CABINET SECTION

2

connector (CN504)

1

wire (flat type) (11 core) (CN801)

4

rear cabinet section

3

three screws (BVTP3 × 10

3

screw (BVTP3 × 10

3-9. PT BOARD, MAIN BOARD

9

two screws (ITC4

×

8)

7

0

2

screw (BVTP3

PT board

×

3

×

10)

harness

6

screw (BVTT3

9

×

8)

8

Remove the PWB PT HLDR in the direction of the arrow.

two screws

×

8)

(ITC4

5

connector (CN090) (EXCEPT TH) (CN091) (TH)

1

screw (BVTT3 × 8)

1

two screws (BVTT3

4

×

8)

main board

13

CX-JV4

)

d

3-10. TABLE ASSY

two claws

5

A

2

Pull-out the table assy.

6

table assy

3-11. MOTOR (TB) BOARD

1

screw (PTPWH M2.6)

2

table (loading)

1

Turn the loading gear in the direction of arrow

3

belt (table)

4

hook

3

wire (flat type) (5 core (CN702)

A

.

14

4

connector (CN731)

6

5

two screws (BTTP M2.6)

motor (TB) boar

3-12. MOTOR (LD) BOARD

4

motor (LD) board

3

two screws (BTTP M2.6)

CX-JV4

1

3-13. BASE UNIT (BU-30BD61S)

belt (loading)

2

connector (CN704)

9

base unit (BU-30BD61S)

1

wire (flat type) (9 core) (CN105)

7

two insulators (BU-30)

6

two coil springs (insulator)

5

two stoppers (BU)

4

two screws (BTTP M2.6)

1

wire (flat type) (23 core) (CN102)

8

two insulators (BU-30)

3

two coil springs (insulator)

2

two screws (PTPWH M2.6)

15

CX-JV4

)

3-14. BD BOARD

BU-30BD61S assy

1

wire (flat type) (16 core (CN101)

2

Remove two solders.

3

Remove two solders.

4

BD board

16

SECTION 4

TEST MODE

CX-JV4

[COLD RESET]

• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:

1. In the standby status, while pressing the x key, press the

[POWER] key.

2. The set is reset, then becomes standby status.

[GC TEST MODE]

Procedure:

1. Press the [POWER] key to turn the power on.

2. While pressing the x key, press the [POWER] key for 5 sec-

onds.

3. It change displays in order of model type, version and suffix at

2 seconds interval, then the display is back to normal status.

[AMP TEST MODE]

Procedure:

1. In the status where AC plug is disconnected, while pressing

the [VIDEO/AUX] key, connect the AC plug to turn the power on. Then enter the AMP test mode and display “AMP TEST”.

2. If turn the [VOLUME] knob clockwise, it displays “VOLUME

MAX”, and if turn the knob counterclockwise, it displays “VOLUME 0”.

3. If the [TREBLE] and [BASS] knobs are turned clockwise or

counterclockwise, it change displays in order of “EQ MAX”, “EQ MIN” and “EQ FLAT”.

4. To release from this mode, disconnect the AC plug and turn

the power off.

[DISC TRAY LOCK]

Procedure:

1. Press the [POWER] key to turn the power on.

2. While pressing the x key, press the [ OPEN/CLOSE] key for

5 seconds.

3. The message “LOCKED” is displayed and the tray is locked.

(Even if exiting from this mode, the tray is still locked)

4. To release this lock, while pressing the x key, press the

Z

[ OPEN/CLOSE] key for 5 again.

5. The message “UNLOCKED” is displayed and the tray is un-

locked.

[CD REPEAT 5 LIMIT CANCEL MODE]

• Number of repeat for CD playback is 5 times when the repeat mode is “REPEAT”. This mode enables CD to repeat playback for limitless times.

Procedure:

1. Press the [POWER] key to turn the power on.

2. In the repeat on status, while pressing the x key, press the

Z

[CD] key to enter the CD repeat 5 limit cancel mode and re-

peat mark blinks on the fluorescent indicator tube.

3. To release this mode, press the [POWER] key to turn the power

off.

[CHANGE-OVER OF AM TUNER STEP BETWEEN 9 kHz AND 10 kHz]

•A step of AM channels can be changed ov er between 9 kHz and 10 kHz.

Procedure:

1. Press the [POWER] key to turn the power on.

2. While pressing the [TUNER] key, press the [POWER] key to

the display on fluorescent indicator tube changes to “AM 530 kHz” (10 kHz step) or “AM 531 kHz” (9 kHz step), and thus the channel step is changed over.

[FUNCTION CHANGE MODE]

• Select either TV, VIDEO or AUX (MD) of the e xternal function input.

Procedure:

1. Press the [POWER] key to turn the power on.

2. While pressing the [VIDEO/AUX] key, press the [POWER] key.

3. Each time this operation is operated, it change displays in or-

der of “TV”, “VIDEO” and “AUX”.

[TC (TAPE CASSETTE) TEST MODE]

• This mode can be used for operation check of zero return section and automatic REC/PLAY section.

Procedure:

1. In the status where AC plug is disconnected, while pressing

the [TAPE] key, connect the AC plug to turn the power on.

2. The massage “TC TEST” is displayed on the fluorescent indi-

cator tube, and TC (tape casette) test mode is set.

Zero Return Section:

Press the M or m key, tape is rewound to the position of counter zero.

Automatic REC/PLAY Section:

Press the

[REC]

key

r

Tape is rewound to the position of counter zero

r

Tape recording starts

r

Press the x key

r

Tape recording stops

r

Tape is rewound to the position of counter zero

r

Tape playback starts

[TUNER TEST MODE]

Procedure:

1. In the status where AC plug is disconnected, while pressing two keys of [POWER] and x simultaneously , connect the A C plug to turn the power on.

2. The massage “TUN TEST” is displayed on the fluorescent indicator tube, and tuner test mode is set.

17

CX-JV4

SECTION 5

ELECTRICAL ADJUSTMENTS

CD SECTION

Note:

1. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

2. Use an oscilloscope with more than 10MΩ impedance.

3. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S-CURVE CHECK

Connection:

oscilloscope

BD board

TP (FE) TP (VC)

Procedure:

1. Connect an oscilloscope to test point TP (FE) and TP (VC)

on the BD board.

2. While depressing the key, insert an AC plug.

bB

3. Put the disc (YEDS-18) in and press the key and actuate

the focus search. (actuate the focus search when disc table is moving in and out)

4. Check the oscilloscope waveform (S-curve) is symmetrical

between A and B. And confirm peak to peak lev el within 2 ± 1 Vp-p.

S-curve waveform

+ –

x

symmetry

RFDC signal waveform

VOLT/DIV: 200 mV TIME/DIV: 500 ns

±

level: 0.6

0.15 Vp-p

Connecting Location: BD board (Conductor Side)

(See page 19)

RFAC LEVEL CHECK

Connection:

oscilloscope

BD board

TP (RFAC)

TP (VC)

+ –

Procedure:

1. Connect an oscilloscope to test point TP (RF AC) and TP (VC) on the BD board.

2. Turn the power on.

3. Put the disc (YEDS-18) in to playback the number five track.

4. Confirm that oscilloscope waveform is clear and check RFA C signal level is correct or not.

Note: A clear RFAC signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

A

B

Note: •Try to measure several times to make sure than the ratio of A : B

or B : A is more than 10 : 7.

•Take sweep time as long as possible and light up the brightness to obtain best waveform.

within 2

±

1 Vp-p

Connecting Location: BD board (Conductor Side)

(See page 19)

RFDC LEVEL CHECK

Connection:

oscilloscope

BD board

TP (RFDC)

TP (VC)

+ –

Procedure:

1. Connect an oscilloscope to test point TP (RFDC) and TP (VC) on the BD board.

2. Turn the power on.

3. Put the disc (YEDS-18) in to playback the number five track.

4. Confirm that oscilloscope wav eform is clear and check RFDC signal level is correct or not.

Note: A clear RFDC signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

RFAC signal waveform

VOLT/DIV: 200 mV TIME/DIV: 500 ns

level: 1.0

Connecting Location: BD board (Conductor Side)

(See page 19)

±

0.4 Vp-p

18

CX-JV4

Adjustment and Connecting Location: BD board (Conductor Side)

ADJUSTMENT AFTER CD BASE UNIT (BU-30BD61S) IS REPLACED

Perform the E-F Balance (1 track jump) adjustiment .

+ —

BD board

TP (TE)

TP (VC)

oscilloscope

Traverse Waveform

0V

B

level: 1.0 ± 0.5 Vp-p

Center of the waveform

A (DC

voltage)

Traverse Waveform

0V

Tracking servo

Sled servo

ON

A (DC voltage)

Tracking servo

Sled servo

OFF

6. Press the key. (The tracking servo and sledding servo are turned ON) Confirm A (DC voltage) at that tome is 0 V.

7. To release from this mode, turn the power off.

Notes: ¥Always move the optical pick-up to most inside track when

exiting from this mode. Otherwise, a disc will not be unloaded.

¥ Do not run the sled motor excessively, otherwise the gear can

be chipped.

E-F BALANCE (1 TRACK JUMP) ADJUSTMENT

Connection:

Procedure:

1. Connect an oscilloscpe to test point TP (TE) and TP (VC) on the BD board.

2. AC is put in pushing key to enter the CD test mode.

3. Put the disc (YEDS-18) in to playback the number five track.

4. Press the key. If it plays, press the key again. (The tracking servo and the sledding servo are turned OFF)

5. Rotate RV101 on the BD board to adjust A (DC voltage) of the center of the oscilloscope waveform becomes 0 V.

Adjustment and Connecting Location:

– BD BOARD (Conductor Side) –

bB

IC101

TP7 (VC)

IC103

RV101 E-F Balance (1 T rac k Jump) Adjustment

TP8 (RFAC)

TP6 (RFDC)

TP4 (FE)

TP2 (TE)

19

CX-JV4

MEMO

20

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM – CD SERVO Section –

CX-JV4

DETECTOR

A

B

F

E

OPTICAL PICK-UP

BLOCK

(A-MAX.3)

LASER DIODE

PD

I-V AMP

LD

+3.3V (CD)

6

7

8

9

11

10

AUTOMATIC

POWER

CONTROL

Q101

A

B

C

D

F

E

F I-V AMP

E I-V AMP

LD

1

RF

SUMMING

AMP

ERROR AMP

TRACKING

ERROR AMP

APC LD

AMP

RF AMP,

FOCUS/TRACKING ERROR AMP

FOCUS

RF DC

AMP

SUM

RFDCO

RFDCI

TE BAL

SW

IC103

AC

4

FE

16

FEI

17

28

29

TE

18

19

12

PD

2

EQ IN

RFAC

3

VCA

RV101

E-F BALANCE

(1 TRACK JUMP)

FILTER

DIGITAL SIGNAL PROCESSOR

IC101 (1/2)

D/A

IC805

CLK

LD

RFAC

50

49

48

DI

ASYMMETRY

CORRECTOR

ASYI

ASYO

DIGITAL

CLV

PROCESSOR

MDP

25 76 77

6 7 8

RFAC

EQ

15

CONVERTER

1

AO1

2

AO2 AO3

3

53 55

FILI

PCO

FILO

CLTV

DIGITAL PLL

TO SERVO AUTO

SEQUENCER

CPU INTERFACE

DATA

CLOK

XLAT

125254

XPCK

EFM

DEMODULATOR

INTERNAL BUS

SUBCODE

PROCESSOR

SQCK

SQSO

EXCK

SCOR

SENS

SBSO

79 801574 6 5 10 111368 3

WFCK

XUGF

GFS

EMPH

32K

RAM

ERROR

CORRECTOR

16 69

C4M

CLOCK

GENERATOR

DIGITAL

INTERFACE

MUTE

D/A

XTSL

C2PO

14

XTAO

XTAI

PCMD

BLCK LRCK

WDCK

XRST

72

71

66 67 65

17

2

X201

16.9344MHz

DATA

BCK

LRCK

GFS CLK FOK

DATA, BCK, LRCK

CLK, GFS, FOK

A

B

(Page 22)

2-AXIS

DEVICE

(TRACKING)

(FOCUS)

(LIMIT)

M101

(SPINDLE)

M102

(SLED)

68 67 14 39 20 34

AUX02

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IC102

VO4+

10

M

VO4–

5

VO3+

2

VO3–

1

VO2+

56

VO2–

55

VO1+

52

VO1–

47

MOTOR

DRIVE

MOTOR

DRIVE

COIL

DRIVE

COIL

DRIVE

STBY

IN4R

24

40 41 39 43

DIGITAL SERVO

PROCESSOR

IC101 (2/2)

IN3+

27

IN3–

26

SFDR

29

SRDR

IN2+

32

IN2–

31

IN1+

35

IN1–

34

8

30

TFDR

31

TRDR

32

FFDR

33

FRDR

34

PWM GENERATOR

FOCUS/TRACKING/SLED

FE

TE

SE

RFDC

A/D

CONVERTER

FOCUS/

TRACKING/SLED

SERVO DSP

SSTP

26

MIRR, DFCT, FOK DETECTOR

SERVO

INTERFACE

SERVO AUTO

SEQUENCER

TO CPU INTERFACE

FOK

MIRR

DFCT

COUT

SCLK

11

AUX04

69

AUX08

18

22 20 21

19

8

AUX05

AUX06

AUX07

AUX14

AUX09

AUX10

MPEG VIDEO/AUDIO DECODER

IC802 (1/2)

M751

M741

(TABLE)

IC901 (1/2)

M

(LOADING)

SYSTEM CONTROLLER

LOADING MOTOR DRIVE

4 OUT1

2 OUT2

TABLE MOTOR DRIVE

4 OUT1

2 OUT2

74CD NUMBER SENS

20CD BUSY SW

IC701

IC712

LEVEL SHIFT

Q731

+

7FIN

9RIN

7FIN

9RIN

OPEN

CLOSE

36

ROTARY

ENCODER

S711

AUX12

AUX13

LM-F

LM-R

TM-F

TM-R

TABLE ADDRESS

SENSOR

IC731

DISC TRAY

ADDRESS DETECT

S751

OPEN/CLOSE

DETECT

38

LM-F, LM-R,

TM-F, TM-R

C

(Page 24)

• SIGNAL PATH

: CD PLAY

2121

CX-JV4

6-2. BLOCK DIAGRAM – AUDIO/VIDEO Section –

(Page 21)

DATA, BCK, LRCK

A

CLK, GFS, FOK

B

DATA BCK LRCK

CLK GFS FOK

97 96 98

48 45 46

TDMDP

TDMCLK

TDMFS

AUX3 AUX0 AUX1

LOE

64

54

AUX7

47

AUX2

52

AUX6

ACLK

ATCLK

AIN

ARCLK

ARFS

HSYNC VSYNC

PCLK

PCLK2X

LCS1 AUX5 AUX4

CPUCLK

RESET

89 88 90 91 93 94 95

32 – 39

YUV0 – YUV7

41 40 44 43

66 53 49

42 29

AOUT/SELPLL0

ATPS/SELPLL1

VIDEO CD MPEG PROCESSOR

IC801

CAS

RAS

DWE

LSC3

DOE

65

3 2 99

92

MA0 – MA8

DBUS0 – DBUS15

13 – 284 – 12

LD0 – LD7

55 – 62

LA0 – LA17

68 – 87

DATAI

ACK

STB

MPEG VIDEO/AUDIO DECODER

21

TSD

17

MCLK

22

TBCK

19

TWS

33

RSD/SPLL0

37

PBCK/SER IN

23

PWS/SPLL1

89 – 86

YUV0 – YUV7

98, 96, 94, 92,

82

HSYNC

84

VSYNC

79

PCK

80

PCK2

6

DSC-C

10

DSC-S

35

AUX11

12

DCLK

24

RSTOUT

DSCD0 – DSCD7

8, 99, 97, 95, 93, 85, 83, 81

IC802 (2/2)

71

XOUT

74

AUX15

AOL+

AOL–

AOR+

AOR–

VDAC

AUX00

AUX01

XIN

RST

40

48

47

46

45

64

7

9

13

DATAO

R-CH

S801

(SYSTEM SELECT)

RESET SIGNAL

GENERATOR

Q802

PAL

AUTO

NTSC

MIX AMP

IC701

VIDEO AMP

Q901

+5V (VCD)

DATAI, DATAO, ACK, STB

VIDEO OUT

CD

J901

D

E

(Page 23)

(Page 24)

DA0 – DA8

18 – 21, 24 – 28

A0 – A8

D-RAM

IC804

DBAS0 – DBAS15

ADDRESS BUS

DATA BUS DATA BUS

DBAS15

DBAS0 –

2 – 5, 7 – 10,

35 – 38, 40 – 43

DQ0 – DQ15

RAS

WE29OE

CASL

CASH

16 153130

LD0 – LD7

LA0 – LA17

12 – 5, 27, 26, 23, 25,

4, 28, 29, 32, 30

A0 – A17

PROGRAM ROM

IC803

LD0 – LD7

13 – 15, 17 – 21

DQ0 – DQ7

OE

22CE24

LD0 – LD7

X801

27MHz

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: CD PLAY (AUDIO)

: CD PLAY (VIDEO)

2222

CX-JV4

6-3. BLOCK DIAGRAM – TUNER/TAPE/PANEL Section –

FM/AM TUNER PACK

(Page 24)

(Page 22)

(Page 24)

FM 75Ω

(COAXIAL)

AM LOOP

DATA, CLK, LATCH

G

DATAI, DATAO, ACK, STB

D

MIC, SPEANA, VF ON

H

FM ANT

AM ANT

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: TUNER (FM/AM)

: TAPE PLAY (DECK-A)

: TAPE PLAY (DECK-B)

: REC

L-CH

R-CH

TUNED

STEREO

MUTE

R-CH

DO

DI CL CE

DATA

CLK

PLL-CE

TUNED

STEREO

TU-MUTE

DATA CLK LATCH

DATAI DATAO ACK STB

VF ON

MIC

SPEANA

IFC

AMP

Q201, 202

S301 – 323

(FRONT PANEL KEY)

VOLUME

TREBLE

BASS

MULTI JOG

TU

F

DATA IFC CLK PLL-CE TUNED STEREO TU-MUTE

BAND-PASS

FILTER

Q204 – 206

ROTARY

ENCODER

S801

ROTARY

ENCODER

S803

ROTARY

ENCODER

S802

ROTARY

ENCODER

S804

REMOTE CONTROL

RECEIVER

IC801

(Page 24)

DATA

CLK

3 TU/EVOL DO 96 TU DI 88 CLK

9 TU CE 75 TUNED 76 STEREO 85 TU MUTE

28 DATA (EHCO)

2 LATCH (EHCO)

97 CD DATAI

5 CD DATAO 95 CD ACK 100 C D STB

91 VF ON

19 TU-SIG/MIC

21 SPEANA-L 22 SPEANA-M 23 SPEANA-H

77 VOL A 78 VOL B

81 TRE A 82 TRE B

83 BASS A 84 BASS B

79 JOG A 80 JOG B

29 RMC

KEY1 –

KEY3

26 – 24

SYSTEM CONTROLLER

IC901 (2/2)

A PHOTO/S6 B PHOTO/S7

A MODE/S13

REC FWD/S11

REC REV/S8

LCK

XT1

XT2

CF1

CF2

KEYSCAN

A HALF/S12 B HALF/S10

B MODE/S9

S14 – S25

S1 – S5,

S26 – S30

G1 – G11

8

93POWER LED

12

13

15

16

92

47 48 54 52 55 50 53 49

56-6730-40

41-45,

1SYS-MUTE

6CD ON 94POWER 27HOLD

11RESET 18POWER DOWN

86L-MUTE

68-71,73

MUTE

CD ON

POWER

HOLD

RESET

P-DOWN

HP1 (PB)

(DECK-A)

HRPE1

(REC/PB/ERASE)

(DECK-B)

X901

32.768kHz

X902

8.64MHz

S6

S7 S12 S10 S13

S9 S11

S8

L-CH

R-CH R-CH

L-CH

R-CH R-CH

ERASE

LED901

1 STANDBY/ON

B+

CLK

DATA

LED202 – 207

(ILLUMINATION)

LED201

i-BASS

D620 – 627

S6 – S13

LCK

S-OUT

B+ SWITCH

B+

FL901

FLUORESCENT

INDICATOR TUBE

Q607

MUTING

Q305

MUTING

Q307, 309

PB SWITCH

Q301

PB SWITCH

Q303

SO

18

5 LCK

3 DATA 4 CLK

12 LED L3 13 LED L2 14 LED L1 15 LED R3 16 LED R2 17 LED R1

11 V-BASS

MOTOR/PLUNGER DRIVE,

+3.3V

Q601

6

PB2

O-MOTOR

LED DRIVE

IC201

R-CH

O-BIAS

SOL A

SOL B

BIAS OSC

L311

7

8

9

10

PB

REC

BIAS OSC

Q310

CAPSTAN/REEL

MOTOR DRIVE

Q601, 604

PLUNGER DRIVE

(DECK-A)

Q602, 605

PLUNGER DRIVE

(DECK-B)

Q603, 606

REC BIAS

SWITCH

Q311, 312

S6 S7 S12 S10 S13 S9 S11 S8

B+

(CD-VM)

DATA, CLK, S-OUT, LCK

TAPE MECHANISM

DECK BLOCK

CAPM+

MM

(CAPSTAN/REEL)

A-SOL

(DECK-A)

B-SOL

(DECK-B)

A-PHOTO B-PHOTO A-HALF B-HALF A-MODE B-MODE REC (FWD) REC (REV)

MUTE, CD ON, POWER, HOLD

RESET,

P-DOWN

L-MUTE

PB, REC

J

K

L

M

N

(Page 24)

2323

CX-JV4

6-4. BLOCK DIAGRAM – AMP/POWER SUPPLY Section –

(Page 23)

(Page 22)

(Page 23)

(Page 21)

(Page 23)

J401 MIC

L-MUTE

N

J603 (1/2)

VIDEO/AUX

L

R

CD

E

TU

F

PB, REC PB

J

LM-L, LM-R, TM-L, TM-R

C

DATA, CLK, S-OUT, LCK

K

MIC LEVEL

AGC

Q401

MIC AMP

IC401 (1/2)

R-CH

MIC MIXING

REC

VR401

MIC AMP

IC401 (2/2)

A-IN

19

B-IN

21

C-IN

23

PB1P

2

REC1O

28

PB-OUT

6

CONT

13

DATA

DIGITAL ECHO

IC402

MIC-OUT

23

D402

MIC

+

ELECTRICAL VOLUME

C-IN

SPEANA

INPUT SELECT,

IC601

7

32

VOL-IN

LM-L LM-R TM-L TM-R

LEVEL SHIFT

Q406, 407

5DATA 3CLK 4LATCH

31

MIC-IN

C-OUT

27

BASS BOOST ENHANCER

1

18

Q674 – 677

BOOST1 –

LM-L

14

LM-R

15

TM-L

12

TM-R

13

INA

BOOST

CONTROL

8 – 11 5 – 7

BOOST4

OUT

IC671

OUTA

GIN14VREF7BBE

13

BBE CONTROL,

LOADING/TABLE

MOTOR DRIVE

IC672

LEVEL SHIFT

Q402, 403

LEVEL SHIFT

Q404, 405

FREQUENCY

CONTROL

Q671 – 673

FREQ1 –

FREQ3

DATA

VOCAL FADER ON/OFF SWITCH

CLK

LATCH

MUTING

CONTROL

6

MUTING

CONTROL

16

BBE

DATA3CLK

LCK

2

4

LCK

CLK

S-OUT

Q746

VM

Q181

Q183

R-CH

BUFFER

IC711

MUTING

CONTROL

Q184 – 186

VL (AC)

PRE DRIVE

Q101, 103

OVER CURRENT

DETECT

D181

Q281

14

12

IC712

10

VF ON

CURRENT

MIRROR

Q105, 107

13

CASCADE

Q109, 111

R-CH

BIAS

Q117, 119

+

FINAL DRIVE

REC AMP

Q741

+VP

Q125, 127

SWITCHING

Q231

SWITCHING

Q232

–VP

R-CH

MUTING

Q743

OVER LOAD

DETECT

Q129

+

HOLD

Q282

+

R-CH

+VH

+VL

+VH

+VL

R-CH

OUTPUT LEVEL

Q233, 234

OUTPUT LEVEL

+

DC DETECT

Q063, 064

+

HOLD

Q045, 046

+

DETECT

Q235

THERMAL DETECT

AC DETECT

D067, 068

TH101, 102

Q291, 292

PROTECT

Q047

+

VH1, 2 (AC) VH1, 2 (AC)

R-CH

RELAY DRIVE

Q201

RY201

DATA, CLK, LATCH

R-CH

MIC, SPEANA, VF ON

+

FAN MOTOR

DRIVE

Q501 – 503

L

R

J221

PHONES

J203

5

SPEAKER

+ –

M501 (FAN)

MM

G

J603 (2/2)

H

L

R

(Page 23)

REC OUT

(Page 23)

M

RESET, P-DOWN

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: CD PLAY

: TUNER (FM/AM)

: TAPE PLAY

: REC

: VIDEO/AUX IN

: REC OUT

: MIC INPUT

RESET

P-DOWN

RESET SWITCH

Q901

RESET SIGNAL

GENERATOR

IC502

+3.3V

D504

+4V

REGULATOR

IC501

V-STBY

+4V

RECT

D002, 003

+3.3V (CD)

D697

VCC

POWER TRANSFORMER

+4V

REGULATOR

IC003

B+ SWITCH

Q023, 024

(SUB)

PT002

MUTE

POWER

CD ON

+5V (VCD)

+3.3V (VCD)

+5V

REGULATOR

Q605, 606

+3.3V

REGULATOR

Q801

CD ON

SWITCH

Q603, 604

+7V

(CD)

INDICATOR TUBE

VDD

CD-VM

+7V

REGULATOR

Q601, 602

TO

FLUORESCENT

VM

D694

–VFL

VF1

VF2

+9V

REGULATOR

IC002

+9V

REGULATOR

IC001

POWER AMP

BLOCK

REGULATOR

Q041, 043, 044

S001

110 – 120V

220 – 240V

MUTE, CD ON,

POWER, HOLD

L

(AC IN)

(Page 23)

POWER

B+ SWITCH

TO

VSS

–32V

Q001

+VH

–VH

+VL

–VL

HOLD

RECT

D019 – 022

RECT D009

RECT D010

POWER TRANSFORMER

(MAIN) PT003

VM1

VM2

VH1

VH2

VL1

VL2

RELAY DRIVE

Q022

RY001

VOLTAGE SELECTOR

2424

CX-JV4

6-5. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution: Pattern face side: Parts on the pattern face side seen from (Conductor Side) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Component Side) the parts face are indicated.

• Indication of transistor.

C

Q

B

E

B

These are omitted.

Q

CE

These are omitted.

Q

CE

These are omitted.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

Note: The components identified by mark 0 or dotted line

with mark 0 are critical for safety. Replace only with part number specified.

• A : B+ Line.

• B : B– Line.

•Voltages and waveforms are dc with respect to ground under no-signal conditions. – BD/CHANGER Section – no mark : CD PLAY – VMP Section – no mark : VIDEO CD PLAY – Other Sections – no mark : FM

•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

•Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : TUNER (FM/AM) E : TAPE PLAY (DECK-A) d : TAPE PLAY (DECK-B) G : REC J : CD PLAY (AUDIO) L : CD PLAY (VIDEO) j : VIDEO/AUX IN k : REC OUT N : MIC INPUT

: Impossible to measure

∗

4

W or less unless otherwise

• Circuit Boards Location

MOTOR (LD) board

CD KEY board

PT board

PANEL board

HEADPHONE board

SW board

KEY board

SENSOR board

VMP50 board

BD board

MOTOR (TB) board

TUNER (FM/AM)

DRIVER board

TR board

MAIN board

VF board

2525

CX-JV4

6-6. PRINTED WIRING BOARD – BD Section – • See page 25 for Circuit Boards Location. :Uses unleaded solder.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

A

BD BOARD

B

C

C313

D

R290

C316

R227

E

R261

R225

R224

C122

R223

R226

R167 R169

R168

R166

F

G

H

(COMPONENT SIDE)

R202

C216

R207

C215

C209

C230

FB203

R309

R101

C153

R203

C227

C273

C226

C258

C202

C151

R310

C205

R308

C254

C150

C213

C152

R231

R318

R232

R252

R320

R233

R316

FB161

R111

FB102

C131

C132

C119

FB104

FB201

C133

FB101

C103

C101

R123

C102

R103

C104

C112

C118

R102

R105

E

Q101

C115

C114

R122

C108

C109

C231

R199

C117

C111

C113

C354

1-687-189-12(12)

J

VMP50 BOARD

CN803

(Page 32)

BD BOARD

(CONDUCTOR SIDE)

C272

C277

R260

CN105

R115

C116

R113

R117

R118

30

C110

1

R114

IC103

RV101

R125

FB103

16

15

R104

R126

C250

C208

R116

TP7 (VC)

R291

R287

R285

R120

–

R286

FB291

R311

C107

R133

R131

TP8 (RFAC)

R132

OPTICAL PICK-UP

BLOCK

(A-MAX. 3)

CN101

JR4

R204

R201

C212

C224

40

C222

R219

R288

CN102

1-687-189-

D

VMP50 BOARD

CN802

(Page 32)

12

(12)

R151

C156

R289

R222

R152

M102

(SLED)

21

R221

L163

R220

C121

–

M

R313

TP2 (TE)

(SPINDLE)

R312

TP4 (FE)

M101

TP6 (RFDC)

+

R230

X201

R317

C310

56 29

C211

R205

R303

R206

60 41

61

R253

R218

IC101

80

120

M

IC102

128

R155

+

2626

6-7. SCHEMATIC DIAGRAM – BD Section – • See page 46 for Waveforms. • See page 47 for IC Block Diagrams.

R311

0

FB104

0

FB102

R260

0

FB291FB201

00

ADIO

WDCK

C277

0

E

C

T FD R

TP2

(TE)

TE

CE

RFDC

SE

FE

VC

TES1

TEST

DVSS1

FRDR

FFDR

TRDR

TFDR

SRDR

SFDR

DVDD1

FSTO

SSTP

MDP

LOCK

FOK

DFCT

MIRR

COUT

DVSS0

FB103

0

C226

47

C230

0.1

4V

R308

0

FB203

0

150

330

R310

1M

R253

1k

C316

0.1

DVDD2

ASYE

MD2

DOUT

LRCK

PCMD

BCLK

EMPH

XTSL

0

DVSS2

XTAI

XTAO

SOUT

SOCK

XOLT

SQSO

SQCK

SCSY PWMI

SBSO

EXCK

C205 R218

0.1 1k

C202

R207

R303

DVDD0

1M

0

C209 100p

VPCO

BIAS

VCTL

V16M

MUTE

XRST

DATA

A T A D

XRST

C273

0.1

C248

2.2

R205

1k

R206

4.7k

AVDD1

XLAT

K

T

LO C

XLA

220p

C212

1500p

C211

0.1

3.3k

R204

PCO

FILO

FILI

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR

SENS

CLOK

SCLK

S

EN

S

CLTV

CXD3068Q

ATSK

C216C215

0.010.47

AC F R

R203

33k

100k

R202

10k

R201

ASYI

ASYO

RFAC

IGEN

AVDD0

AVSS1

IC101

WFCK

XPCK

XUGF

AVSS0

SCOR

C2PO

C4M

GFS

R O C S

C250C354

00

R313

C272

0

TP4 (FE)

R166

R168

R167

R169

R290

0

C222

0.1

R309

0

(Page

30)

(Page

30)

DOUT

DGND

C2PO

GFS

FOK

(NC)

CD-DATA

CD-WCLK

CD-SCLK

(NC)

DGND

PWM3(RFDC)

PWM2(TE)

PWM1(FE)

XRST

DATA

XLAT

CLK

RFSW

SQSO

SENS

SQCK

SCOR

+7V

P-GND

+3.3V

D-GND

+3.3V

D-GND

CN105

CN102

C231

C208

220

0

10V

FB101

0

C261

0.1

9P

R312

0

R320

0

C121

23P

100

R288

100

R289

0

R291

0

R285

0

R287

0

R286

PWM3

PWM2

PWM1

XRST

100

R221

DATA

100

R222

XLAT

1k

R220

CLOK

100

R223

RFSW

100

R224

SQSO

100

R225

SENS

100

R226

SQCK

100

R227

SCOR

0.1

R230

R231

R232

R233

R252

C254

22p

X201

16.9344MHz

22p

C258

C122

0.1

C227

0.1

O

K

S

C

Q

S

CX-JV4

150k

R111

C116

TP5

RFAC

R104

15k

FE

C313

0.1

R318

0

1

C224

SE

FE

AA5

AA6

0

AA3

0

AA4

0

AA1

0

AA2

TE

SE

C103 C101 470p 470p

RFDC

C310

0.1

R317

0

R316

1k

R219

C131

0.068

R101

(RFACI)

RFSW

R131 68k

PWM1

R105

R102

1k

15k

R103 100k

R116 R115C102

33k 33k0.1

PWM3

PWM2

RV101

47k

TP6

(RFDC)

C133

2.2

IC102

AN41020A

C104

3300p

0

0.1

C213

3300p

C112

RF AMP,

FOCUS/TRACKING

ERROR AMP

IC103

R199

0

NC

PVCC/2(NC)

STBYNCNC

NC

D F

+ P S

FEI

TE

TE_BAL

CE

CEI

VCC

RFG

BST

VFC

RFC

VC

RFDC

RFDCI

DC_OFST

CXA2647

VO1-

VO4+

RFACFE

DVC

DVCC

SW

F

E

D

C

B

A

GND

AC_SUM

EQ_IN

PD

LD

C111

TP7

47

(VC)

4V

C115

100 10V

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

NC

PVCC1

NC(BC2)

PVCC2NCNC

PVCC2

NC(BC4)

C152

0.1

(RFAC)

C110

0.1

C108

0.1

C117

0.1

C153C151

0.10.1

NC

NC(BC1)

NC(VPUMP1)

NC(VPUMP2)

NC(BC3)

TP8

C113

R122 R123

100

100k 3.3

10V

6

AA

NC(VDD)

NC(I-OP-)

NC(O-OP)

NC(I-OP+)

NC(SW)

NC(CT)

NC(FB)

R158

1k

R151 100k

R152

2.2k

R120 120k

C107

33p

R117 120k

R114 390k

R113

2.7k

R133

2.2k

R118

10k

C132

R132 330k

0.022

+

-

+

D

FD

T

NC

VO2-

VO2+

VO1+

PGND1

PGND2

PGND2NCNC

VO3-

VO3+

VO4-

-

+

P

D

S

0.1

C109

0.1

C119

1

CN101

16P

R126

I1

I2

C118

1

I3

I4

I5

C114 1000p

Q101

2SB970

AUTOMATIC

POWER

CONTROL

4

5

AA3

AA

IN2-

IN1-

IN2+

IN1+

OPO2(NC)

OPO1(NC)

IN3-

IN3+

SVCC SGND

OPO3(NC)

IN4R

IN4

VREF

R155

C158

0.01

0

L163C156

2

A1

A A

A

00.01

39k

R125

I2

39k

I3

I4

I5

TD-

FD-

TD+

FD+

SD-

SD+

SP-

SP+

I1-6

VC

I5-10

VCC

PD2

GND

PD1

IL-SW

PD

GND

LD

VCC

T-

F-

T+

F+

M102

(SLED)

M101

(SPINDLE)

C150

220 10V

FB161

The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

2727

CX-JV4

6-8. PRINTED WIRING BOARDS – CHANGER Section – • See page 25 for Circuit Boards Location. :Uses unleaded solder.

SENSOR BOARD

IC731

CN731

13

CN741

1-687-132-

(11)

MOTOR (TB) BOARD

MOTOR (LD) BOARD

11

AK

EC

(TABLE)

M741

M

SW BOARD

CLOSE

OPEN

CN751

1 2

S751

OPEN/CLOSE

DETECT

1-687-669-

1-687-134-

CN742

11

(11)

11

(11)

DRIVER BOARD

Q731

R733

E

C737

C736

CN705

2 1

CN702

C751

CN704

2

R732

R734

R735

C735

R751

C741

JW710

R723

1

JW711

R722

CN703

C752

JW712

JW708

JW709

R721

D711

R701

D701

R702

4

JW707

C715

JW706

JW705

R713

MAIN BOARD

B

CN692

(Page 33)

CN701

R731

JW702

JW704

JW703

19

R711

R712

19

JW713

IC712

IC701

JW714

C731

JW701

1-687-135-

11

(11)

M751

(LOADING)

M

CN721

2 1

1-687-133-

S711

ROTARY ENCODER

DISC TRAY

ADDRESS DETECT

11

(11)

2828

6-9. SCHEMATIC DIAGRAM – CHANGER Section – • See page 47 for IC Block Diagrams.

LOADING MOTOR

DRIVE

IC701

BA6956AN

VREF

OUT2

OUT1

CX-JV4

VCC

FIN

VM

GND

RIN

IC731

RPI-576

TABLE ADDRESS SENSOR

M741

(TABLE)

SENS-IN

SENS-OUT

CN731

3P

GND

M751

(LOADING)

CN741

3P

SENS-IN

SENS-OUT

GND

DISC TRAY

ADDRESS DETECT

S751

OPEN/CLOSE

DETECT

OPEN

CLOSE

S711

CN721

2P

LM-2

LM-1 LM-1

E3

E2

E1

CN742 CN702

5P 5P

TM-2

TM-1

SENS-IN

SENS-OUT

GND

CN751 CN705

2P 2P

OPEN SW OPEN SW

GND GND

CN704

2P

LM-2

CN703

4P

E-3

E-2

E-1

GND

TM-2

TM-1

SENS-IN

SENS-OUT

GND

0.1

C735

0.1

C736

0.1

C737

4.7k

R723

R735

100

4.7k

R722

4.7k

R721

R702 R701

100 470

DRIVE

IC712

BA6956AN

D701

MTZJ-T-77

5.1A

R712 R711

4.7k 1k

R713

22k

C751

0.01

TABLE MOTOR

D711

MTZJ-T-77

3.6B

R734 R732

12k 10k

R733

1k

VREF

DTC114ESA

OUT2

R731

LEVEL

C741

0.01

100

Q731

SHIFT

RNF RNF

OUT1

VCC

FIN

VM

RIN

GND

C731

10

50V

C752 R751

0.1 4.7k

C715

100 16V

TBL ADDRESS SENS

OPEN SW

CN701

CD-VM

LM-R

LM-L

TM-R

TM-L

D+3.3V

12P

GND

E-1

E-2

E-3

(Page 37)

2929

Aiwa CX JV4 Service Manual

TABLE OF CONTENTS

SER VICING NOTES

GENERAL

3-1. DISASSEMBLY FLOW

DISASSEMBLY

3-2. CASE (SIDE-L/R)

case (top)

tray panel

CD mechanism deck (CDM74B-30BD61S)

front panel section

rear cabinet section

3-9. PT BOARD, MAIN BOARD

table assy

motor (LD) board

base unit (BU-30BD61S)

BD board

TEST MODE

ELECTRICAL ADJUSTMENTS

CD SECTION

DIAGRAMS

6-1. BLOCK DIAGRAM – CD SERVO Section –

6-3. BLOCK DIAGRAM – TUNER/TAPE/PANEL Section –

6-4. BLOCK DIAGRAM – AMP/POWER SUPPLY Section –

6-5. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS