CX-JT7 JAX-PK7.pdfCX-JT7 Ver 1.0 2003.04 9-877-252-01 Sony Corporation 2003D0500-1 Home Audio...

SERVICE MANUAL

COMPACT DISC DECK RECEIVER

AEP ModelUK Model

E Model

CX-JT7Ver 1.0 2003.04

9-877-252-01 Sony Corporation2003D0500-1 Home Audio Company

C 2003.04 Published by Sony Engineering Corporation

SPECIFICATIONS

CX-JT7 is the tuner, amplifier, cassettedeck and CD player section in JAX-T7and JAX-PK7.

Model Name Using Similar Mechanism NEW

CDCD Mechanism Type CDM74F-K6BD71A

SectionBase Unit Name BU-K6BD71A

Optical Block Name KSM-213DCP

Optical Pick-up Name KSS-213D

Tape deckModel Name Using Similar Mechanism NEW

Section Tape Transport Mechanism TypeCWM43FR16CWM43RR23

TUNERFM tuning range 87.5 MHz to 108 MHzFM usable sensitivity (IHF) 16.8 dBfFM antenna terminal 75 ohms (unbalanced)AM tuning range 531 kHz to 1602 kHzAM usable sensitivity 350 µV/mAM antenna Loop antenna

AMPLIFIERPower output Rated: 80 W + 80 W (6 ohms, T.H.D.

1 %, 1 kHz/DIN 45500)Reference: 100 W + 100 W (6 ohms,T.H.D. 10 %, 1 kHz/DIN 45324)MUSIC POWER: 225 W + 225 W

Total harmonic distortion 0.08 % (50 W, 1 kHz, 6 ohms, DINAUDIO)

Input MD (VIDEO): 1.5 VOutputs SPEAKERS: 6 ohms or more

PHONES: 32 ohms or more

CASSETTE DECKTrack format 4 tracks, 2 channels stereoFrequency response 50 Hz – 8 kHzRecording system AC biasHeads Deck A: playback x 1

Deck B: recording/playback x 1,erase x 1

CD PLAYERLaser Semiconductor laser

(λ = 780 nm)Emission duration:continuous

D/A converter 1 bit dualSignal-to-noise ratio 85 dB (1 kHz, 0 dB)Harmonic distortion 0.05 % (1 kHz, 0 dB)

GENERALPower requirements 230 V AC, 50/60 HzPower consumption 130 WPower consumption With ECO mode on: 0.25 W in standby mode With ECO mode off: 20 WDimensions (W x H x D) 280 x 328 x 437 mm (AEP, UK, CIS)

280 x 328 x 446 mm (MX, E51)Weight 8.4 kg (AEP, UK, CIS)

9.3 kg (MX, E51)

Specifications and external appearance are subject to changewithout notice.

COPYRIGHTCheck copyright laws relevant to recordings from discs, tuneror tape for the country where the unit is to be used.

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

• AbbreviationE51 : Chilean and Peruvian modelsMX : Mexican model

CX-JT7

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CLASS 1 LASER PRODUCT

LUOKAN 1 LASER LAITE

KLASS 1 LASER APPARAT

This appliance is classifiedas a CLASS 1 LASERproduct.

This label is located on therear exterior.

Notes on chip component replacement• Never reuse a disconnected chip component.• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

Flexible Circuit Board Repairing• Keep the temperature of the soldering iron around 270 ˚C dur-

ing 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.

CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTEDLINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WHOSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.

CX-JT7

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TABLE OF CONTENTS

1. SERVICING NOTES ................................................ 4

2. GENERALLocation of Controls ....................................................... 7

3. DISASSEMBLY3-1. Disassembly Flow ........................................................... 93-2. Case (SIDE-L/R) ............................................................. 103-3. Case (Top) ....................................................................... 103-4. Tray Panel ........................................................................ 113-5. CD Mechanism Deck (CDM74F-K6BD71A) ................ 113-6. Front Panel Section ......................................................... 123-7. Mechanical Deck ............................................................. 123-8. Rear Cabinet Section ...................................................... 133-9. MAIN Board ................................................................... 133-10. POWER Board ................................................................ 143-11. TRANSFORMER Board ................................................ 143-12. Table Assy ....................................................................... 153-13. Motor (TB) Board ........................................................... 153-14. Motor (LD) Board ........................................................... 163-15. Base Unit (BU-K6BD71A) ............................................. 163-16. Motor Gear Assy (Sled) (M701), BD Board .................. 173-17. Optical Pick-up (KSS-213D) .......................................... 17

4. TEST MODE .............................................................. 18

5. ELECTRICAL ADJUSTMENTSCD Section ...................................................................... 21

6. DIAGRAMS6-1. Block Diagram – CD Section – ..................................... 226-2. Block Diagram – TUNER/TAPE/PANEL Section – ..... 236-3. Block Diagram – AMP/POWER SUPPLY Section – ... 246-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 256-5. Printed Wiring Board – BD Board – ............................. 266-6. Schematic Diagram – BD Board – ................................ 276-7. Printed Wiring Boards – CHANGER Section – ............ 286-8. Schematic Diagram – CHANGER Section – ................ 296-9. Schematic Diagram

– MAIN Board (1/4) (Suffix-11) – ................................. 306-10. Schematic Diagram



– MAIN Board (4/4) (Suffix-11) – ................................. 336-13. Printed Wiring Board – MAIN Board (Suffix-11) – ..... 346-14. Printed Wiring Board – MAIN Board (Suffix-13) – ..... 356-15. Schematic Diagram




– MAIN Board (4/4) (Suffix-13) – ................................. 396-19. Printed Wiring Boards – CD BUTTON/

HEADPHONE/MICROPHONE Boards – ..................... 406-20. Schematic Diagram – CD BUTTON/HEADPHONE/

MICROPHONE Boards – ............................................... 416-21. Printed Wiring Board – PANEL Board – ...................... 426-22. Schematic Diagram – PANEL Board – ......................... 436-23. Schematic Diagram – POWER Board (1/2) – ............... 446-24. Schematic Diagram – POWER Board (2/2) – ............... 45

6-25. Printed Wiring Board – POWER Board –(AEP, UK, CIS models) .................................................. 46

6-26. Printed Wiring Board – POWER Board –(MX model) ..................................................................... 47

6-27. Printed Wiring Board – POWER Board –(E51 model) ..................................................................... 48

6-28. Printed Wiring Board – TRANSFORMER Board –(AEP, UK, CIS models) .................................................. 49

6-29. Printed Wiring Board – TRANSFORMER Board –(MX model) ..................................................................... 50

6-30. Printed Wiring Board – TRANSFORMER Board –(E51 model) ..................................................................... 51

6-31. Schematic Diagram – TRANSFORMER Board –(AEP, UK, CIS, E51 models) .......................................... 52

6-32. Schematic Diagram – TRANSFORMER Board –(MX model) ..................................................................... 53

6-33. IC Pin Function Description ........................................... 57

7. EXPLODED VIEWS7-1. Case Section .................................................................... 637-2. Front Panel Section-1 ...................................................... 647-3. Front Panel Section-2 ...................................................... 657-4. Front Panel Section-3 ...................................................... 667-5. Front Panel Section-4 ...................................................... 677-6. Chassis Section-1 ............................................................ 687-7. Chassis Section-2 ............................................................ 697-8. CD Mechanism Deck Section-1

(CDM74F-K6BD71A) .................................................... 707-9. CD Mechanism Deck Section-2

(CDM74F-K6BD71A) .................................................... 717-10. CD Mechanism Deck Section-3

(CDM74F-K6BD71A) .................................................... 727-11. Base Unit Section (BU-K6BD71A) ............................... 73

8. ELECTRICAL PARTS LIST ............................... 74

• AbbreviationE51 : Chilean and Peruvian modelsMX : Mexican model

4

CX-JT7

D324

CN309

IC303

CN312

– MAIN BOARD (Conductor Side) –

SECTION 1SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro-static break-down because of the potential difference generatedby the charged electrostatic load, etc. on clothing and the humanbody.During repair, pay attention to electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair parts.The flexible board is easily damaged and should be handled withcare.

NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as to be focusedon the disc reflective surface by the objective lens in the opticalpick-up block. Therefore, when checking the laser diode emis-sion, observe from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATIONCHECKCarry out the “S curve check” in “CD section adjustment” andcheck that the S curve waveforms is output three times.

• MODEL IDENTIFICATION– Back Panel –

MODEL PART No.

Chilean and Peruvian models 4-245-109-4[]

AEP, UK, CIS and Mexican models 4-245-109-5[]

UNLEADED SOLDERBoards requiring use of unleaded solder are printed with the lead-free 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)

: LEAD FREE MARKUnleaded 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 beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 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 oc-cur such as on IC pins, etc.

• Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder mayalso be added to ordinary solder.

PART No.

• DISCRIMINATIONEither type of the MAIN board, Part No. 1-688-080-11 or 1-688-080-13 is used for Chilean and Peruvian models.Note: For other models, only one type of the MAIN board, Part No. 1-

688-080-13 is used.How to identify the type is described below.

D324

Suffix-11 ×Suffix-13 a

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CX-JT7

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

2 Turn the loading gear in the direction of arrow A.

1 Remove the case (side-L).

A

3 Pull-out the disc tray.

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CX-JT7

SERVICE POSITION– CD mechanism deck –

– Tape mechanism deck –

main board (CN312)

Connect wire (flat type) (19 core) tomain board (CN312) and BD board (CN710).

BD board (CN710)

Connect wire (flat type) (13 core) topanel board (CN801) and mechanical deck.

panel board (CN801)

main board (CN203)

7

CX-JT7SECTION 2GENERAL

This section is extracted frominstruction manual.

• LOCATION OF CONTROLS

1 DISC CHANGE/DISC SKIPRotates the CD trays.

2 POWER 6STANDBY/ONSwitches the unit on and off (standby).The red indicator flashes when receiving a signal fromthe remote.

3 TAPE A/BSelects Tape function, and deck A or B.

TUNER BANDSelects Tuner function and the radio band.

MD (VIDEO)Selects the function of external equipment connected toMD (VIDEO) jacks.

CDSelects CD function.

4 TREBLE/MIDDLEEnhances high or middle frequency sound.

5 CD SYNCStarts Automatic CD dubbing.

REC PAUSE/STARTStarts recording.

6 PHONES jackPlug in here an optional headphones set with a ministereo plug (ø3.5 mm). Speaker output is canceled.

MIC jack (Mexican, Chilean and Peruvianmodels)Connects the microphone here.

MIC MIXING (Mexican, Chilean andPeruvian models)Adjusts the microphone volume.

Main unit: frontRefer to the pages indicated in parentheses for details.

7 DISC DIRECT PLAY 1-3Selects a disc.

8 zOPEN/CLOSEOpens or closes the disc compartment.

9 HEAVY, VOCAL, SALSA, TECHNO,HIP HOP, MANUALActivates a graphic equalization curve.

0 MODESelects various modes (Play mode and Tape reverse, etc.)when used in combination with ENTER and MULTI JOG.

ENTERFixes the modes and the time (Play mode and Tapereverse, etc.) when used in combination with MODE andMULTI JOG.

! MULTI JOGCD: skips to a previous or a succeeding track.Tuner: selects a preset station.Clock and Timer: sets the time.Selects the mode and the time when used in combinationwith MODE and ENTER.

@ VOLUME (10)Adjusts the volume.

# BASSAdjusts low frequency sound.

SURROUNDSwitches surround on and off.

i-BassProduces rich and clear low frequency sound.

$ DISPLAYDisplays the time and the remaining time for CD.When the unit is off, press DISPLAY to switch betweenDEMO, Clock and ECO display modes.

ALBUMk/iSelects a previous album or a succeeding album withMP3-CDs.

PTY (AEP and UK models)Displays a program type for RDS (Radio Data System)

% rTUNING DOWN, tTUNING UP(f ,g)CD: searches a track in fast forward or fast reverseplayback when held down.Tape: fast forwards or rewinds the tape.Tuner: manually tunes down or up within the band.

aPAUSECD and Tapes: pauses playback.

dDIR (TAPE B)CD and Tapes: starts playback.

sSTOPCD and Tapes: stops playback.

Main unit: rearRefer to the pages indicated in parentheses for details.

1 AM LOOP, FM 75 Ω terminalsPlug in the supplied AM and FM antennas here.

2 MD (VIDEO) jacksAccepts analog sound signals from external equipment.Connect using an optional connecting cable with RCAphono 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 MD (VIDEO).Tip:To change the displayed name for this function, turn theunit on, then hold down MD (VIDEO) and press POWERon the unit. Repeat the procedure to select “MD” or“VIDEO”.

3 SPEAKER terminalsConnect the speaker cord of the supplied front speakershere.

4 AC power cord

5 AC VOLTAGE selector (Chilean andPeruvian models)Switches AC voltage among 120V, 220V, and 230V- 240V.Make sure it matches your local voltage.

8

CX-JT7

Setting the clockUse 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”appears in the display and then press ENTER.

3 Press r or t repeatedly to set the hourand then press ENTER.

4 Pressr ort repeatedly to set the minuteand then press ENTER.The time display stops flashing and the clock starts from00 seconds.

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

To display the timePress DISPLAY. The time will be displayed for 6 seconds.Tip: (Mexican, Chilean and Peruvian models)“AM 12:00” indicates midnight and “PM 12:00” noon.

If “- -:- -” appears when the unit is turned offThere has been a power interruption. Re-set the clock.

Buttons with the same or similar names with the main unitbasically have the same function.

1 POWER

2 1-0/10, +10Selects a CD track of the specified number.

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

EDITEnters Automatic CD dubbing mode when pressed instop mode.

BANDSelects Tuner function and the radio band.

TAPE A/BSelects Tape function, and deck A or B.

SPECTRUMChanges the spectrum analyzer display.

TUNER MODESwitches between stereo or monaural FM reception.

KARAOKE (Mexican, Chilean and Peruvianmodels)Selects Vocal Fader mode.

GEQEnters Graphic Equalizer setting mode.

TUNER MEMORYTuner: stores the received station in to preset.

SURROUNDSwitches surround on and off.

3 r, tCD: selects a track.Tuner: selects a preset station.BASS, MID and TREBLE: adjusts the level.Clock and Timer: sets the time.

4 ALBUM M/ NSelects a previous album or a succeeding album.

5 PLAY MODECD: selects a playback mode.Tape: selects a reverse mode

REPEATEnters CD repeat playback mode.

ENTER

6 CLOCK/TIMER/SETEnters timer setting mode.

CLOCK/TIMER/SELECTSelects timer playback, timer recording or timer off.

7 DISPLAYDisplays the time and the remaining time for CD.When the unit is off, press DISPLAY to switch betweenDEMO, Clock and ECO display modes.

8 SHIFTHold down when pressing a numbered button to changeits function to that printed above the number.e.g.)“Press SHIFT+BAND on the remote” indicates “Holddown SHIFT and press ‘2’ (BAND)”. Doing so makes yoube able to select Tuner function and the radio band.

Remote controlRefer to the pages indicated in parentheses for details.

9 FUNCTIONSwitches the active function among CD, TAPE, TUNERand MD (VIDEO).

0 DISC SKIPSelect a disc.

! c/dCD and Tape: starts playback.

sCD and Tape: stops playback.

f,gCD: searches a track in fast forward or fast reverseplayback when held down.Tape: fast forwards or rewinds the tape.Tuner: manually tunes down or up within the band.

aCD and Tape: pauses playback.

@ SLEEPSwitches the sleep-timer on/off and selects the duration.

# VOLUME (+,-)Adjusts the volume.

$ SOUNDSelects BASS, MID or TREBLE setting mode

CLEAR

(AEP, UK and CIS models)

Clears a track of the CD programmed playback and aRadio preset station.

Note

The buttons not explained above (KARAOKE) do notoperate for this unit.

CX-JT7

9

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

3-1. DISASSEMBLY FLOW

SECTION 3DISASSEMBLY

Set

3-2. CASE(SIDE-L/R)(Page 10)

3-3. CASE (TOP)(Page 10)

3-4. TRAY PANEL(Page 11)

3-6. FRONT PANELSECTION(Page 12)

3-8. REAR CABINETSECTION(Page 13)

3-7. MECHANICALDECK(Page 12)

3-9. MAIN BOARD(Page 13)

3-10. POWER BOARD(Page 14)

3-11. TRANSFORMER BOARD(Page 14)

3-16. MOTOR GEAR ASSY (SLED) (M701),BD BOARD(Page 17)

3-17. OPTICAL PICK-UP(KSS-213D)(Page 17)

3-15. BASE UNIT(BU-K6BD71A)(Page 16)

3-12. TABLE ASSY(Page 15)

3-13. MOTOR (TB)BOARD(Page 15)

3-14. MOTOR (LD)BOARD(Page 16)

3-5. CD MECHANISM DECK(CDM74F-K6BD71A)(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.

CX-JT7

10

1 two screws(BVTP3 × 10)

7 case (top)

5 claw

3 claw

4 claw

6

2 claw



2 three screws(case3 TP2)

5 case (side-R)

7 three screws(case3 TP2)

3

8

9

4

0 case (side-L)

3-3. CASE (TOP)

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

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

CX-JT7

11

3-4. TRAY PANEL

3-5. CD MECHANISM DECK (CDM74F-K6BD71A)

1 Turn the loading gear in the direction of arrow A.

A

4 tray panel

3 four claws

2 Pull-out the disc table.

3 screw (BVTP3 × 10)

4 screw (BVTP3 × 10)


1 wire (flat type) (19 core)(CN312)

6 CD mechanism deck(CDM74F-K6BD71A)

2 connector (CN701)

CX-JT7

12

3-6. FRONT PANEL SECTION

3-7. MECHANICAL DECK

2 connector (CN310)

4 connector (CN203)

3 connector (CN202)


7 front panel section

6 three screws(BVTP3 × 10)


3 mechanical deck 1 wire (flat type) (13core)

2 six screws(BVTP3 × 10)

4 ground mechanical plate

CX-JT7

13

6 rear cabinet section

5 five screws(BVTP3 × 10)

2 connector (CN303)

1 wire (flat type) (11core: CIS, MX, E51)(15core: AEP, UK)

4 cover (duct)


3-8. REAR CABINET SECTION

3-9. MAIN BOARD


3 main board

2 two connectors(CN502, CN503)

CX-JT7

14

3-10. POWER BOARD

3-11. TRANSFORMER BOARD

4 power board

2 two screws(BVIT3B-8R W/O SLOT)

3 two screws(BVIT3B-8R W/O SLOT)

1 connector (CN902)

3 trans holder

2 screw(BVTT3 × 8)

5 four screws(ITC+4-8R)

1 screw(BVTP3 × 10)

6 transformer board4

CX-JT7

15

3-12. TABLE ASSY


4 hook

1 Turn the loading gearin the direction of arrow A.

A

5 two claws

2 Pull-out the table assy.6 table assy

3-13. MOTOR (TB) BOARD

2 table (loading)

4 connector(CN731)

1 screw(PTPWH M2.6)

5 two screws(BTTP M2.6)

6 motor (TB) board

3 belt (table)

CX-JT7

16

3-14. MOTOR (LD) BOARD

3-15. BASE UNIT (BU-K6BD71A)

2 connector(CN704)

3 two screws(BTTP M2.6)

4 motor (LD) board

1 belt (loading)

3 four coil springs(insulator)

4 four insulators

5 base unit (BU-K6BD71A)

1 four screws(BTTP M2.6)

2 four stoppers (BU)

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17

1 Remove twosolders.

qa BD board

2 two screws(P2 × 3)

6 claw

7 gear (A)

8 gear (B)


0 motor gear assy (SLED)(M701)

3 screw (P2.6 × 6)

9 Remove two solders.

4

2 sled shaft

1 Slide the leverin the direction of arrow A.

3 Remove the optical pick-up(KSS-213D) in the directionof arrow B.

A

B

3-16. MOTOR GEAR ASSY (SLED) (M701), BD BOARD

3-17. OPTICAL PICK-UP (KSS-213D)

18

CX-JT7SECTION 4TEST MODE

[COLD RESET]• The cold reset clears all data including preset data stored in the

RAM to initial conditions. Execute this mode when returningthe set to the customer.

Procedure:1. Press the [POWER] key to turn the power ON.2. Press three keys of x , [ENTER] and [POWER] simultaneously.3. The message “RESET” is displayed on the fluorescent indicator

tube momentarily, then becomes standby states.

[TUNER STEP CHANGE-OVER](Except AEP, UK and CIS models)• A step of AM channels can be changed over between 9 kHz and

10 kHz.Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [TUNER BAND] key to select “AM”.3. Press the [POWER] key to turn the power OFF.4. Press two keys of [ENTER] and [POWER] simultaneously.5. The message “9K STEP” or “10K STEP” is displayed on the

fluorescent indicator tube, and thus the channel step is changedover.

[CD SHIP MODE]• This mode moves the optical pick-up to the position durable to

vibration. Use this mode when returning the set to the customerafter repair.

Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [CD] key to select “CD”.3. Press two keys of [CD] and [POWER] simultaneously.4. The message “LOCK” is displayed on the fluorescent indicator

tube, and the CD ship mode is set.

[CHANGE-OVER FUNCTION OF MD/VIDEO]• This mode is used to enable function of external input to change

over between MD and VIDEO.Procedure:1. Set to standby state.2. Press two keys of MD (VIDEO) and [POWER] simultaneously.3. The message “MD” or “VIDEO”is displayed on the fluorescent

indicator tube, and the function of external input is changedover.

[CD TRAY LOCK MODE]• This mode is used to unable to take sample disc out of tray in

the shop.Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [CD] key to select “CD”.3. While pressing the x key, press the Z key for 5 seconds.4. The message “LOCKED” is displayed on the fluorescent

indicator tube and the tray is locked. (Even if pressingthe Z key, the message “LOCKED” is displayed on thefluorescent indicator tube and the tray is locked)

5. To release from this mode, while pressing the x key, pressthe Z key for 5 seconds.

6. The message “UNLOCKED” is displayed on the fluorescentindicator tube and the tray is unlocked.

[AMP TEST MODE]• This mode is used to set the parameter of AMP IC for adjustment

of tone quality and VACS level and display VACS status.Procedure:1. Press the [POWER] key to turn the power ON.2. Press three keys of x , [HEAVY] and [HIP POP] simultaneously.3. When the AMP test mode is activated, the message “AMP

TEST” is displayed on the fluorescent indicator tubemomentarily.

4. Press two keys of [HEAVY] and [DISC DIRECT PLAY 2]simultaneously, mode is changed over to parameter setting ofAMP IC and display of VACS status.

5. When the VACS ON, the message “V2255255” is displayed onthe fluorescent indicator tube, and when the VACS OFF, themessage “2255255” is displayed on the fluorescent indicatortube.

6. Press the [VOCAL] key, DBFB ON/OFF is changed over.7. Press the [ENTER] key, surround ON/OFF is changed over.8. Press the [MANUAL] key, EQ band is changed over to LOW,

MID or HIGH.9. Press the [HIP POP] and [TECHNO] key, EQ curve adjustment

value is changed over between –8dB to +8dB.10. To release from this mode, press two keys of [HEAVY] and

[TECHNO] simultaneously.

19

CX-JT7

[AGING MODE]• This mode can be used for operation check of CD section and

tape deck section.CD section and tape deck section work in parallel.

If an error occurred:The aging operation stops only an error occurred sections anddisplay then status.

If no error occurs:The aging operation continues repeatedly.

Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [CD] key to select “CD”.3. Set disc on the tray and set tape into the deck.4. Set the “ALL DISCS” mode and “REV OFF” mode.5. Press three keys of x , [HEAVY] and [DISC CHANGE/DISC SKIP]

simultaneously.6. The message “AGING” is displayed on the fluorescent indicator

tube momentarily, then aging operations of CD and tape arestarted at the same time.

7. To release from this mode, operate the “COLD RESET”.

1. Display at the Aging ModeDisplay operating state of CD section and tape deck sectionalternately.If an error occurred, stop display which that section.

2. CD SectionThe sequence during the aging mode is following as below.Display at the aging mode is the same as the normal operation.

Aging mode sequence (CD section) :

Start (from disc 1)

Disc chucking

TOC read

Play first track for 2 seconds

Play last track for 2 seconds

EX-change open/close

Open the disc tray

Disc skip

Close the tray

Change the next disc.

3. Tape Deck SectionThe sequence during the aging mode is following as below.If an error occurred, stop display that step.

Aging mode sequence (tape deck section) :

Rewind the tape A and B“AAG-1 or 2”

Shut off

FWD play the tape A“AAG-3”

2 minutes

Fast forward the tape A“AAG-4”

Shut off or 20 seconds

REV play the tape A“AAG-5”

2 minutes

Rewind the tape A“AAG-6”

Shut off

FWD play the tape B“BAG-3”

2 minutes

Fast forward the tape B“BAG-4”

Shut off or 20 seconds

REV play the tape B“BAG-5”

2 minutes

Rewind the tape B“BAG-6”

Shut off

Note: “*AG-*” is display of each step.

20

CX-JT7

[GC TEST MODE]• This mode is used to check the fluorescent indicator tube, LED

and key.Procedure:1. Press the [POWER] key to turn the power ON.2. Press three keys of x , [HEAVY] and [DISC DIRECT PLAY 2]

simultaneously.3. Fluorescent indicator tube and LEDs are all turned ON.4. Press two keys of [HEAVY] and [DISC DIRECT PLAY 2]

simultaneously, mode is changed over.5. In the key check mode, press each key, the defined key number

of every each key list is displayed on the fluorescent indicatortube.

6. In the key count check mode, “K-CNT 0” is displayed on thefluorescent indicator tube. Each time a key is pressed, “K” valueincreases. However, once a key is pressed, it is no longer takeninto account.

7. In the headphone input check mode, connect the headphone,the message “H_P ON” is displayed on the fluorescent indicatortube, and disconnect the headphone, the message “H_P OFF”is displayed on the fluorescent indicator tube.

8. In the volume check mode, turn the [VOLUME] knob, thedisplay on the fluorescent indicator tube is changed over to“VOL UP”, “VOL FLAT” or “VOL DOWN”

[MC TEST MODE]• This mode is used to check operations of Amplifier.Procedure:1. Press the [POWER] key to turn the power ON.2. Press three keys of x , [HEAVY] and [DISC DIRECT PLAY 3]

simultaneously.3. When the MC test mode is activated, the message “MC MODE”

is displayed on the fluorescent indicator tube momentarily, thenVACS level is displayed on the fluorescent indicator tube.

4. Press the [TECHNO] key, the display on the fluorescentindicator tube is changed over to “EQ MAX”, press the[MANUAL] key, the display on the fluorescent indicator tube ischanged over to “EQ MID”, press the [HIP POP] key, thedisplay on the fluorescent indicator tube is changed over to “EQMIN”,

5. Turn the [VOLUME] knob, the display on the fluorescentindicator tube is changed over to “VOL MAX”, “VOL MID” or“VOL MIN”

6. Press the [ENTER] key, VACS ON/OFF is changed over.7. When the [REC PAUSE/START] key is pressed with a tape set

in the deck-B, the function is switched “MD” or “VIDEO” andrecording starts. When the m or M key is pressed duringrecording, the tape is rewound back to the beginning ofrecording, the function is switched to “TAPE B”, then playbackstarts.

8. When the [CD SYNC] key is pressed with the test tape (AMS-100, AMS-110A) in the deck, number of space between tunesis counted, then if AMS-110A is set, “OK” is displayed on thefluorescent indicator tube and if AMS-100 is set, “NG” isdisplayed on the fluorescent indicator tube.

9. To release from this mode, press the [POWER] key.

[MODEL, DESTINATION AND VERSION DISPLAY]• This mode is used to check the model, destination and software

version.Procedure:1. Set to the standby state.2. Press three keys of x , [TECHNO] and [HEAVY] simultaneously.3. When the model, destination and version display mode is

activated, the model an destination is displayed on thefluorescent indicator tube.

4. Press two keys of [HEAVY] and [DISC DIRECT PLAY 2]simultaneously, mode is changed over to model and destinationdisplay mode and version display mode.

5. In the version display mode, press the [DISC DIRECT PLAY 3]key, display is changed over to version display and year, monthand day of the software creation display.

6. To release from this mode, press the two keys of [TECHNO]and [HEAVY] simultaneously.

[CD ERROR CODE DISPLAY]• This mode can be used for error display of CD section.Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [CD] key to select “CD”.3. Press three keys of x , [HEAVY] and [DISC DIRECT PLAY 1]

simultaneously.Note: Error code is not displayed on the liquid crystal display.

[CD SERVICE MODE]• This mode can run the CD sled motor freely. Use this mode, for

instance, when cleaning the optical pick-up.Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [CD] key to select “CD”.3. Press three keys of x , [HEAVY] and Z simultaneously.4. When the CD service mode is activated, the message “TRVS

ON” is displayed on the fluorescent indicator tube.5. Press the M key, optical pick-up move to outside track and

the message “SLED OUT” is displayed on the fluorescentindicator tube.

6. Press the m key, optical pick-up move to inside track andthe message “SLED IN” is displayed on the fluorescent indicatortube..

7. Press the [TECHNO] key, traverse ON/OFF is changed over.

[5 REPEAT LIMIT CANCEL]• Number of repeat for CD playback is 5 times when the repeat

mode is “REPEAT”. This mode is used to enables CD to repeatplayback for limitless times.

Procedure:1. Press the [POWER] key to turn the power ON.2. Press the [CD] key to select “CD”.3. Press three keys of x , [HEAVY] and Y simultaneously.

CX-JT7

2121

CD SECTION

Note:1. CD Block is basically designed to operate without adjustment. Therefore,

check each item in order given.2. Use YEDS-18 (3-702-101-01) unless otherwise indicated.3. Use an oscilloscope with more than 10MΩ impedance.4. 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

Procedure :1. Connect an oscilloscope to TP (FE) and TP (VC).2. Turn the power on.3. Load a disc (YEDS-18) and actuate the focus search. (In

consequence of open and close the disc tray, actuate the focussearch)

4. Confirm that the oscilloscope waveform (S-curve) issymmetrical between A and B. And confirm peak to peak levelwithin 3 ± 0.5 Vp-p.

Note: • Try to measure several times to make sure than the ratioof A : B or B : A is more than 10 : 7.

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

RF LEVEL CHECK

Procedure :1. Connect an oscilloscope to TP (RF) and TP (VC).2. Turn the power on.3. Load a disc (YEDS-18) and playback.4. Confirm that oscilloscope waveform is clear and check if RF

signal level is correct or not.

BD boardOscilloscope

TP(FE)TP(VC)

symmetry

S-curve waveform

within 3 ±0.5Vp-p

A

B

TP(RF)

BD boardoscilloscope

TP(VC)

Note: Clear RF signal waveform means that the shape “ ◊ ” can be clearlydistinguished at the center of the waveform.

Connecting Location: BD board

RF signal waveform

VOLT/DIV : 200mVTIME/DIV : 500ns

level : 1.3 ±0.3Vp-p

TP (VC)TP (RF)

TP (FE)

IC721

– BD Board (Conductor side) –

SECTION 5ELECTRICAL ADJUSTMENTS

CX-JT7

2222

SECTION 6DIAGRAMS

6-1. BLOCK DIAGRAM – CD Section –

8

7

9

10

80

79

70 LIMIT SW

20

TDO

18

10

VO3(+)

FOIN

20TIN

3SPIN

7LDS

25SLIN

17 VO3(–)

11 VO2(+)12 VO2(–)

26 VO4(+)

27 VO4(–)

2 VO1(+)

1 VO1(–)

A

C

B

D

E

F

LD

PD

RF AMP, FOCUS/TRACKING ERROR AMP,DIGITAL SIGNAL PROCESSOR, DIGIRAL SERVO PROCESSOR,

DIGITAL FILTER, D/A CONVERTERIC721

21

FDO

23

SLDO

22

SPDO

25

CONT

4

A

B

D

E

F

C I-V A

MP

DETECTOR

LDPD

LASER DIODE

OPTICAL PICK-UPBLOCK

(KSM-213DCP)

2-AXISDEVICE

(FOC

US)

(TRA

CKIN

G)

M702(SPINDLE)

M701(SLED) M

M

FOCUS/TRACKING COIL DRIVE,SPINDLE/SLED MOTOR DRIVE

IC722

49

48X701

16.9344MHz

S701(LIMIT)

79 DATAIN80 DATACK

5 C2FIN

1 LRSY

2 ADDATA3 ADBCK4 ADLRCK

7 CKIN

9 CKOUT

78 RESB

99 I-LC78646/LC78684 DI98 O-LC78646/LC78684 DO100 O-LC78646/LC78684 CLK5 O-LC78646 CE85 I-WRQ

86 I-CD DRF4 O-LC78646 RESET

60DATA

59DATACK

52C2F

58LRSY

57ASDFIN

56ASDACK

55ASLRCK

5416MOUT

106

76 66

53EFLG

50FSX/16MIN

73 CMDOUT74 CMDIN

CE FSYN

CO-

LC78

684

CEI-L

C786

84 S

YNC

75 CL

26MP3RES

64DO

63DI

62CL

96I-CD NUMBER SENS

22I-BU IP DOWN/

CD OPEN CLOSE

9RINLM-R

11RESET

1O-SYS-MUTE94O-POWER RELAY29I-HOLD

S-MUTEO-POWER

HOLD61

CE

65*WRQ

67DRF

72CD MUTE

66*RES

4 OUT1

2 OUT2

M751(LOADING) M

LOADING MOTOR DRIVEIC701

MP3 DECODERIC801

SYSTEM CONTROLLERIC901 (1/2) S751

OPEN/CLOSEDETECT

OPEN

CLOSE

LEVEL SHIFTQ731

TABLE ADDRESSSENSOR

IC731

+ROTARY

ENCODERS711

7FINLM-F

9RINTM-R

4 OUT1

2 OUT2

M741(TABLE) M

TABLE MOTOR DRIVEIC712

7FINTM-F

LM-F, LM-R,TM-F, TM-R

D

S-MUTE,O-POWER, HOLD

B

42LCHO

45RCHO

R-CH

CD-LA

APC

FIN2

FIN1

LDD

LDS

TIN2

TIN1

XOUT

XIN

RF4

EFMIN3 ERROR

CORRECTEQ,AGC

COMMANDINTERFACE

CLOCKGENERATOR

PH, BH

RF AMP

TBAL A/DCONVERTER

D/ACONVERTER

EXTERNALAUDIO IN

SERIAL OUT

D/ACONVERTER

SERVOPROCESSOR

AUTOMATICPOWER CONTROL

Q701

27I-POWER DOWN POWER DOWN

RESETRESET,

POWER DOWNC

• SIGNAL PATH

: CD PLAY

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

(Page 24)

(Page 24)

(Page 24)

(Page 23)

R-CH

DISC TRAYADDRESS DETECT

I/01

– I/0

16A0

– A

8

MDA

TA0

– M

DATA

15M

ADRS

0–

MAD

RS8

27 OE45OEB13 WE42WEB14 RAS41RASB29 LCAS43CASLB28 UCAS44CASUB

IC802MEMORY

2-5,

7-1

0,31

-34,

36-

39

23-3

0, 3

3-40

60-5

3, 5

0

16-1

9, 2

2-26

MUTINGQ311

MUTING CONTROLSWITCH

Q312

CX-JT7

2323

6-2. BLOCK DIAGRAM – TUNER/TAPE/PANEL Section –

10CAPSTAN/REELMOTOR DRIVE

Q601

11PLUNGER DRIVE

(DECK-A)Q602

MM

TAPE MECHANISMDECK BLOCK

(CAPSTAN/REEL)

(DECK-A)

(DECK-B)

LED DRIVER,TAPE MECHANISM CONTROLLER

IC202

MOTOR3 DATA4 CLOCK

87 I-LC72121 DI92 O-LC72121/BU2099 CLK9 O-LC72121 CE

88 I-TUNER TUNE97 I-TUNER STEREO

2 I-BU1924 DI3 I-BU1924 CLK

21 I-MIC/I-TU SIG

19 I-SPEANA M

91 O-LC72121/M61529/BU2099 DO

5 LCK18 SO

A-SOL

GTAPE-L, REC-L

(Page 24)

KDI, SO, CLK, MCLK, LCK,

(Page 24)

JTUNER-L

(Page 24)

DLM-F, LM-R, TM-F, TM-R

(Page 22)

TUNER UNIT

AM LOOP

FM ANT

AM ANT

L-CH

R-CH R-CH

TU-MUTE

DI

DICL

K

CLK

S-OU

TLC

KDI

BIAS OSCL201

REC BIASSWITCH

Q228+9V

BIAS OSCQ223

ERASE

HRPE1(REC/PB/ERASE)

(DECK-B)

HP1(PB)

(DECK-A)

L-CH

R-CH R-CH

R-CH

L-CH

R-CH R-CH

18 I-SPEANA L

20 I-SPEANA H

BAND-PASSFILTER

Q204 – 206

SPEANA AMPQ201, 202

B+ SWITCHQ921

FL902FLUORESCENT

INDICATOR TUBE

MUTINGQ219, 221

12PLUNGER DRIVE

(DECK-B)Q603

B-SOL

LED213

LED901

A-PHOTO

B-SOL

A-SOL

CAPM+

B-PHOTOA-HALFB-HALFA-MODEB-MODEREC (FWD)REC (REW)

9 I-BASS

+3.3V

B+

D603 – 610I-B-PHOTO

I-B-HALF

I-REC (FWD)S10/I-REC (REW)

S6 –

S10

S1 – S5,S11 – S23

G1 – G11

48524953

5055

S7/I-A-PHOTO

95O-KEYSCAN

S8/I-A-HALF

U8

U9

U7S10/U11

S7/U5

S8/U6

S9/I-B-MODE4754

S6/I-A-MODES9/U10

S6/U4

U8

U9

U7U11

U5

U6

U10U4

93O-POWER LED

8O-BU2099 LCK

41 –

45,

56

– 68

30 –

40

MIC, SA SA

MIC

E

SO

MCL

K

LCK

X90132.768kHz

13

12

XT2

XT1

7O-M61529 CLK

16

15X902

8.64MHzCF2

CF1

i-BASS

LED3038 CD3

3

LED3027 CD2

2

LED3016 CD1

1

POWER 1 STANDBY/ON(Page 24)

(AEP, UK)

(Except AEP, UK, CIS)

SYSTEM CONTROLLERIC901 (2/2)

FM 75Ω(COAXIAL)

LED DRIVERIC201

3 DATA4 CLOCK5 LCK

18 SO

LED2049 TAPE

TAPE A/B

LED20510HEAVY

HEAVY

LED20611VOCAL

VOCAL

LED20712SALSA

TECHNO

LED20813TECHNO

SALSA

LED21014HIP POP

HIP POP

LED21115MANUAL

MANUAL

LED2038 AUX

MD (VIDEO)

LED2027 TUNER

TUNER BAND

LED2016 CD

CD

DISC DIRECT PLAY

ANTENNA

34

32BIN (L)

AIN (L)

28 27EQOUT (L)

26PB-OUT (L)

TAI (L) MUTE

DECK A/B SELECT SWITCH, REC/PB EQ AMPIC201 (SUFFIX-11) IC201 (SUFFIX-13)

REC-OUT (L) REC-IN (L)

21 EQ 24

DOCLK

CETUNED

ST

RDS DATARDS INT

MULTI CONTROLLERIC309 (SUFFIX-11) IC309 (SUFFIX-13)

7 BIAS

1514

6 REC

11 TUNER MUTE

MUTE-ON/OFFREC MUTE-ON/OFF

910 REC MUTE

PB MUTE8 A/B13A/B

REC ON/OFFSWITCH

Q222, 225

3DATA4CLOCK5LCK

18SO

CLK

S-OU

T

13LM-L (CD)LM-F

12LM-R (CD)LM-R

TAPE-L

REC-L

15TM-L (CD)TM-F

14TM-R (CD)TM-R

• SIGNAL PATH

: TUNER (FM/AM)

: TAPE PLAY (DECK-A)

: TAPE PLAY (DECK-B)

: REC

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

HSP-F

(Page 24)16FRONT SPON/OFF

76 I-HP MUTE

KEY ACTIVESWITCH

Q504, 505

28 I-RMCREMOTE CONTROL

RECEIVERIC802

S301 – 309,S311 – 331

(FRONT PANEL KEY)

83 I-VOL B84 I-VOL AROTARY

ENCODERS801

VOLUME

79 I-BASS B80 I-BASS AROTARY

ENCODERS802

TREBLEMIDDLE

81 I-JOG B82 I-JOG AROTARY

ENCODERS803

BASS

77 I-TRE B

I-KEY1 –I-KEY3

78 I-TRE AROTARYENCODER

S804

MULTI JOG

26 –

24

HPF(Page 24)

+4V

+3.3V (SUB)

CX-JT7

2424

6-3. BLOCK DIAGRAM – AMP/POWER SUPPLY Section –

J221

R-CH

PHONES

SPEAKER

+–

–+

R

L

JK502

R-CH

–VL

–VP

+VP

–VHOUTPUT LEVEL

DETECTQ23, 24

BIASQ507, 509

HOLDQ7 – 9

FEED BACKSWITCH

Q491

FINAL DRIVEQ501, 503

SWITCHINGQ17, 19, 22

SWITCHINGQ18

R-CH

R-CH

+

+

R-CH

CASCADEQ511, 513, 515

MIC AMPIC401 (1/2)

MIC AMPIC401 (2/2)

MUTINGQ525

CURRENTMIRROR

Q521, 523

FREQUENCYCONTROL

Q314 – 316

BASS BOOSTON/OFF SWITCH

Q323

R-CH ++VL

+VHOUTPUT LEVEL

DETECTQ20, 21

1

14

6

9

BASS BOOST ENHANCERIC303 (SUFFIX-11) IC303 (SUFFIX-13)

INPUT SELECTSWITCH, TONE CONTROL, ELECTRICAL VOLUME, BASS BOOST AMPIC301 (SUFFIX-11) IC301 (SUFFIX-13)

BASS BOOST CONTROLLERIC310 (SUFFIX-11) IC310 (SUFFIX-13)

CTRL1 –CTRL3

INA

VREF

7

BBE

13

GIN

I-BAS

S

19

SAOU

TSAMIC

OUTA

29TOUT 25OUT2

VR401J401

3

DATA

4

CLOC

KLC

K

S-M

UTE

O-PO

WER

O-PO

WER

HOLD

CLK

SO

5

LCK

35

RECB

-2

12 – 10

BASS BOOSTCONTROL

Q317 – 320

BB CTRL1 –BB CTRL4

16 – 13

40 CD-L

MD-L

2 MIC

39 TUNER-L

38 TAPE-L

28 VOLIN2

MIC LEVELAGCQ401

–30V REGULATORQ533 – 536 (Except AEP, UK, CIS)

Q534 – 536 (AEP, UK, CIS)

(AC IN)

SUB POWERTRANSFORMER

PT902

MAIN POWERTRANSFORMER

PT901

RECTD2

+VL

TOPOWER AMP

BLOCK

–VL

VL

VL

VF1

TOFLUORESCENT

INDICATOR TUBE

VF2

RECTD1 (Except AEP, UK, CIS)

D3 – 6 (AEP, UK, CIS)

+VH

–VH

VM+9V

VM+10V

–VFL

EVER+10V

VH

VH

RECTD319 – 322

RECTD301 – 304

VM

VMVCC

RECTD902 – 905

DECK+9V, M+9V

+4VREGULATOR

IC501+3.3V (SUB)

POWER DOWN

RESET

D504

RESET SIGNALGENERATOR

IC502

MIC MIC MIXING

CD-LA

D402

TUNER-LJ

TAPE-L, REC-L TAPE-L

REC-L

G

DI, SO, CLK,MCLK, LCK

K

RESET,POWER DOWN

C

21

DATA

22

CLOC

K

D401

MIC, SA(Page 23)E

S-MUTE, O-POWER, HOLDB

: MIC INPUT

(Page 22)

H (Page 23)

HP F (Page 23)

(Page 22)

(Page 23)

(Page 23)

(Page 23)

(Page 22)

(Except AEP, UK, CIS)

(Chilean, Peruvian)(Chilean, Peruvian)

ExceptChilean, Peruvian

AC VOLTAGES901

ExceptChilean, Peruvian

VOLTAGESELECTOR

RY901POWER ON/OFFRELAY DRIVE

Q330, 331RY902

+10VREGULATOR

IC313

+9VREGULATOR

IC308D102

P+7VD313 – 315

+9VREGULATOR

IC305

+4VREGULATOR

IC306

B+ SWITCHQ301, 302

RELAY B++9V

+1.8V(MP3)

+3.3V (MAIN)

+1.8VREGULATOR

IC803

RESET SWITCHQ901

R-CH

SPEAKER ON/OFFRELAY DRIVE

Q304

FAN MOTORON/OFF SWITCH

Q327, 328, 372, 373

RY501

M731(FAN)M

SP-F

: TAPE PLAY

: REC

: CD PLAY

: TUNER (FM/AM)

SIGNAL PATH

: MD (VIDEO) IN

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

R-CH

JK302

L

R

MD (VIDEO)IN

37

BASS BOOSTCONTROL

Q492R-CH

BUFFERIC304

CENTER VOLATAGEGENERATOR

Q324

VM+10V

MCL

KDI

+

R-CH

OVER LOADDETECT

Q505

DC DETECTQ5, 6

THERMAL DETECTQ10, 11+

+TH501,

502

+

R-CH +

MUTING CONTROLSWITCH

Q527

POWER OFFMUTING DRIVER

Q529, 530

D513VM+10V

HOLDQ12

OVER CURRENTDETECT

Q13

PRE DRIVEQ517, 519

+4V

IC304 (SUFFIX-11) IC304 (SUFFIX-13)





CX-JT7

2525

6-4. 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.)

Note on Schematic Diagram:• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolyticsand tantalums.

• All resistors are in Ω and 1/4 W or less unless otherwisespecified.

• 2 : nonflammable resistor.• C : panel designation.

• A : B+ Line.• B : B– Line.• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.no mark : FM( ) : CD PLAY[ ] : TAPE PLAY (DECK-A){ } : TAPE PLAY (DECK-B)〈〈 〉〉 : REC

∗ : Impossible to measure• Voltages are taken with a VOM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal produc-tion tolerances.

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

• Circled numbers refer to waveforms.• Signal path.

F : TUNER (FM/AM)J : CD PLAYE : TAPE PLAY (DECK-A)d : TAPE PLAY (DECK-B)G : RECj : MD (VIDEO) INN : MIC INPUT

• AbbreviationE51 : Chilean and Peluvian modelsMX : Mexican model

• Circuit Boards Location

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.

C

B

These are omitted.

E

Q

B

These are omitted.

C E

Q

B

These are omitted.

C E

Q

• Indication of transistor.

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

BD board

MOTOR (TB) board

TUNER PACK

DRIVER board

MAIN board

POWER board

TRANSFORMER board

MICROPHONE board(MX, E51)

HEADPHONE board

PANEL board

CD BUTTON board

MOTOR (LD) board

SW board

SENSOR board

CX-JT7

2626

6-5. PRINTED WIRING BOARD – BD Board – • See page 25 for Circuit Boards Location. :Uses unleaded solder.

C860

R860

C817FB803

FB80

5

FB804

FB806 R806R807

R747 R746

3 4

5

IC801

IC802

BD BOARD(COMPONENT SIDE)

1-688-077- (11)

11

OPTICALPICK-UPBLOCK

(KSM-213DCP)

IC722

IC803

IC721

BD BOARD(CONDUCTOR SIDE)

1-688-077- (11)

(SUFFIX-11)

(SUFFIX-13)11

M702(SPINDLE)

M

+

–

M701(SLED)M

+

–

S701(LIMIT IN)

TP(RF)

TP(FE)

TP(TE)

TP(VC)

E

BC

MAINBOARDCN321

A1

MAINBOARDCN321

A2

A

B

C

D

E

F

1 2 3 4 5 6 7 8 9 10 11

7 114 8

22 2815 21

• SemiconductorLocation

Ref. No. Location

IC721 D-8IC722 C-9IC801 E-3IC802 F-3IC803 F-9

Q701 B-7

(Page 34)

(Page 35)

CX-JT7

2727

6-6. SCHEMATIC DIAGRAM – BD Board – • See page 54 for IC Block Diagrams. • See page 54 for Waveforms.

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

CN708

C711

C712

C721

C719

C720

C718

C717

C715

C716

C714

C706

C707

R7

39

R7

40

R7

41

M702

M701

R738

C747 C748

R707

C705

C709

R730

C746 C708 R729

C7

43C744

R725R726

R731

C754C742

C753

R760

C756

C722

FB707FB708

R7

20

R7

19

R7

18

R721

C830

R826

R827

R828

R825

C825

R823

R824

C829

FB808

FB701

R765 C734

C735

X701

C732

C733

C729

C811

R817

R818

C812

R819R820

FB807FB801

FB802

C844

C856

C810

R801 R802

C837

R8

03

R8

04

R8

05

C813

C814

C843

C803 C805

C815

C816

R834

R833 R832

IC803

FB8

03

FB8

05

FB8

06

CN710

(SUFFIX-11)

(SUFFIX-13)

C802C807

R732

C806

C8

17

R7

17

R7

16

C741

R728

R745

R701

R706

R708C710

R727C703

C723

R711

R703

R704

R705

C702

C701

R702

FB8

04

C831

C704

R709

S701

R714

R715

TP

TP

TP

TP

C7

13

R829

R747

R746

R713

C823

C824

R744

R807

R806

IC801

C804

C859

C858

C857 C860

R860

C835

C834

C731

Q701

R722

IC721

IC722

IC802

16P

0.1

47p

0.1

0.0047

100p

1

0.0047

1 50V

0.001

0.1

0.1

1006.3V

0 6.8

k

0

6.8k

0.1 22010V

10

0.001

1006.3V

1.2k

0.1 0.1 12k

0.0

47

1

680680

2.2k

47p0.1

47p

100

47p

0.1

10

0

10

0

10

0

100

22p

100

100

100

100

47p

100

100

47p

1M 15p

18p

16.9344MHz

0.01

0.01

22010V

0.1

3.3k

150

1

1k1k

0.1

1

0.1

100 100

0.1

10

0

10

0

10

0

0.1

1006.3V

0.1

0.01 1006.3V

22010V

0.1

100

100 2.2k

MM1571J

19P

0.11006.3V

0

0.1

0.1

10

0

10

0

0.1

47k

100

47k

47k

10k0.047

1000.1

1006.3V

330

15k

15k

15k

1006.3V

0.1

15k

22p

476.3V

27k

100

100

0.0

04

7

100

33

33

1k

47p

47p

100k

100

100

LC78684E-E

22p

22p

22p

22p

100p

100

0.1

22010V

0.1

UP0411600SO

1k

LC78646E-E

BA5836FP

LC32V4265CT-25

DR

F

DRF

CD

_R

ES

CD_RES

CD

_W

RQ

CD_WRQ

DO

DO

DI

DI

CL

CL

CD

_C

E

CD_CE

WE

RA

S

A0

A1

A2

A3

A4

A5

A6

A7

A8

UC

AS

LC

AS

I/O

9

I/O

10

I/O

11

I/O

12

I/O

13

I/O

14

I/O

15

I/O

16

I/O

1

I/O

2

I/O

3

I/O

4

I/O

5

I/O

6

I/O

7

I/O

8

I/O

1

I/O

2

I/O

3

I/O

4

I/O

5

I/O

6

I/O

7

I/O

8

I/O

9

I/O

10

I/O

11

I/O

12

I/O

13

I/O

14

I/O

15

I/O

16

MP

3_C

E

MP3_CE

FSYNC

FS

YN

C

A0

A1

A2

A3

A4

A5

A6

A7

A8

OE

UCAS

LCAS

WE

RAS

OE

F

GN

D

VC

VC

C E

C B NC

A D

VC

VCC

E

D

A

B

C

F

GND

LD

VR

PD

F+

T-

T+

F-

(SLED)

(SPINDLE)

GN

D

SLIN

IN4

BIA

S

VC

C

VC

C

TIN

IN3

RES

ET

VO

3(+

)

VO

3(-

)

VO

4(-

)

VO

4(+

)S

PIN

RES

ET

REG

-B

REG

OU

T

MU

TE

GN

D

IN2

FO

IN

GN

D

OP

OU

T

VO

2(-

)

VO

2(+

)

VO

1(+

)

VO

1(-

)

IN(-

)

OP

SLCIST

EFMIN

RF

RFVDD

RFVSS

FIN1

FIN2

TIN1

TIN2

VREF

REF1

FE

TEC

TE

RFMON

JITTC

ADAVDD

ADAVSS

TDO

FD

O

SP

DO

SLD

O

GP

DA

C

CO

NT4

MP

3R

ES

DEFEC

T

FS

EQ

MO

NI1

MO

NI2

MO

NI3

MO

NI4

MO

NI5

VS

S

VD

D

DO

UT

TESTV/*

P

SB

CK

/FG

LD

S

FR

VV

DD

PC

KIS

T

VV

SS

PD

O2

PD

O1

CO

NT2

VS

S

VD

D5

DR

F

DO DI

CL

CE

LIM

IT S

W

CD

_M

UTE

DATA

DATACK

LRSY

ASDFIN

ASDACK

ASLRCK

16MOUT

EFLG

C2F

XVSS

XIN

XOUT

XVDD

RVDD

RCHO

RVSS

LCHO

LVDD

FSX/16MIN

DRF

FSYNC

CL

DO

DI

3.3V

3.3V

AMUTE

CD_CE

CD_WRQ

CD_RES

D.OUT

MP3_CE

VIN

GND

CONT

VO

NOISE

VS

S

I/O

16

I/O

15

I/O

14

I/O

13

VS

S

I/O

9

I/O

10

I/O

11

I/O

12

NC

LC

AS

UC

AS

OE

A8

A7

A6

A5

A4

VS

S

VC

C

I/O

1

I/O

2

I/O

3

I/O

4

VC

C

I/O

5

I/O

6

I/O

7

I/O

8

NC

NC

WE

RA

S

NC

A0

A1

A2

A3

VC

C

MADRS0

MADRS1

MADRS2

MADRS3

MADRS4

MADRS5

MADRS6

MADRS7

MADRS9

MADRS8

DVDD4

VSS

MADRS10

MADRS11

MADRS12

OEB

CASUB

CASLB

WEB

RASB

DATACK

DA

TA

IN

RES

B

INTB

CE

CL

CM

DIN

CM

DO

UT

OV

F

CN

TO

K

WO

K

VS

S

DV

DD

6

CR

CF

FS

YN

C

STD

AT

STC

K

STR

EQ

VS

S DVDD5

DVDD2 VS

S

MD

ATA

0

MD

ATA

1

MD

ATA

2

MD

ATA

3

MD

ATA

4

MD

ATA

5

MD

ATA

6

MD

ATA

7

DV

DD

3

VS

S

MD

ATA

8

MD

ATA

9

MD

ATA

10

MD

ATA

11

MD

ATA

12

MD

ATA

13

MD

ATA

14

MDATA15

LRSY

ADDATA

ADLRCK

C2FIN

TEST1

CKIN

VSS

CKOUT

TEST2

DVDD1

PW

SBSY

SFSY

SBCK

AVDD

VPRFR

VCOC

VPDO

AVSS

+1.8V REGULATOR

ADBCK

LVSS

*W

RQ

*R

ES

LD

D

SLCO

SB

CK

/CO

NT6

RF AMP,

SLED/SPINDLE

MOTOR DRIVE,

FOCUS/TRACKING

COIL DRIVE

AUTOMATIC

POWER

CONTROL

(LIMIT IN)

(LD)(PD)

(VC)

(FE)

(TE)

(RF)

MP3 DECODER

MEMORY

A-GND

D-GND

P+7.0V

P-GND

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

DIGITAL FILTER,D/A CONVERTER

FOCUS/TRACKING ERROR AMP,

R-CH

L-CH

A1

A2

(Page 32)

(Page 38)

CX-JT7

2828

6-7. PRINTED WIRING BOARDS – CHANGER Section – • See page 25 for Circuit Boards Location. :Uses unleaded solder.

C715

C731

C735

C736

R711

R731

R721

R722

R723

R735

R732

R733

R734

Q731

C751

IC712

IC701

CN704

C737

R713

R712

C741

JW70

2

JW70

3

JW70

4JW

705

JW70

6

JW70

7

JW708

JW71

1

CN703

CN702

CN705

R751

C752

CN701

JW71

2

JW70

1

JW709

JW71

0

JW71

3

JW71

4

R701

D701

D711

R702

CN751

IC731

CN731

CN741

CN742

CN721

DRIVER BOARD

1-687-135-

11

(11)

MAIN BOARDCN309B2

MAIN BOARDCN309

(SUFFIX-11) (SUFFIX-13)

B1

1 9

1 9

1 42

S711ROTARY ENCODER

DISC TRAYADDRESS DETECT

21

SW BOARD

1-687-669-

11

(11)

SENSOR BOARD

1-68

7-13

2-

11

(11)

1-687-134-

11

(11)

MOTOR (TB) BOARD

MOTOR (LD) BOARD

1-687-133-

11

(11)

M751(LOADING)

M

21

M

M741(TABLE)

1 3

12

S751OPEN/CLOSE

DETECT

CLOSE

OPEN

A K

E C

E

(Page 34) (Page 35)

CX-JT7

2929

6-8. SCHEMATIC DIAGRAM – CHANGER Section – • See page 54 for IC Block Diagrams.

C741

R702 R701

D701C751

C715

R713

R712 R711

D711

CN721

R7

22

R7

21

R7

23

C7

36

C7

35

C7

37

R731R732

C731

R734

R733

R735

CN704

E3

E2

E1

CN703

CN742 CN702

CN741

IC731

CN751 CN705

C752 R751

CN701 (SUFFIX-11)

(SUFFIX-13)

CN731

Q731

M751

M741

S751

IC701

IC712

0.01

100 470

MTZJ-T-775.1A0.01

10016V

22k

4.7k 1k

MTZJ-T-773.6B

2P

4.7

k

4.7

k

4.7

k

0.1

0.1

0.1

10010k

1050V

12k

1k

100

2P

4P

5P 5P

3P

RPI-576

2P 2P

0.1 4.7k

12P

3P

DTC114ESA

BA6956AN

BA6956AN

RN

FR

NF

TM-2

GND

TM-1

SENS-IN

SENS-OUT

GND

TM-1

TM-2

SENS-IN

SENS-OUT

GND

SENS-IN

SENS-OUT

GND

SENS-IN

SENS-OUT

GND GND

OPEN SW OPEN SW

LM-2

LM-1 LM-1

LM-2

GND

E-1

E-2

E-3

M+9V

GND

VC

C

OU

T2

GN

D

VR

EF

OU

T1

VM

FIN

RIN

VC

C

OU

T2

GN

D

VR

EF

OU

T1

VM

FIN

RIN

LM-R

LM-F

TM-R

TM-F

E-1

E-2

E-3

TBL ADDRESS SENS

OPEN SW

(LOADING)

S711

DISC TRAY

ADDRESS DETECT

(TABLE)

TABLE ADDRESS SENSOR

OPEN

CLOSE

OPEN/CLOSE

DETECT

DRIVE

LOADING MOTOR

DRIVE

TABLE MOTOR

LEVEL

SHIFT

D+3.3V

B1

B2(Page 31)

(Page 37)

CX-JT7

3030

6-9. SCHEMATIC DIAGRAM – MAIN Board (1/4) (Suffix-11) – • See page 54 for IC Block Diagram.

D102

R101

R102

C103

R304 R303

C3

51R302

R301

C102

C101

C301

R317

C3

21

C3

23

C327

C3

31

C3

33

R3

19

C325C319

R3

30

C3

20

C3

24

C337

R323

C3

32

C3

34

C3

28

C3

26

R326

C353C303

C318

R318

C304

C357

C311C312

C310

C356

R397

C355

R3

96

R3

95

Q312

R316

C362

JR322

JR3

11

JR310

R328

R322

R320

Q311 Q310

JR313JR312

R321 JR325

C361

R365C393

JK302

R327

C365

C309

CN101

IC301

C302

C366

JR300 C300

C317

R325R324

C313

C411

C314C412

C3

52

C354

C342 R354

R356R355

R380

R358R399 R398

D317

10EDB40-TB3

10k

10k

100 16V

22k 22k

10

00

p

4.7k

4.7k

4.750V

4.750V

10 50V

2.2k

0.0

22

0.0

22

0.0027

0.2

2

0.2

2

1k

0.0470.047

10

k

0.0

22

0.0

22

1050V

1k0.2

2

0.2

2

0.0

02

7

0.0

47

10k

470p10010V

1050V

2.2k

4.750V

100010V

10 50V10

50V

1050V

470p

1k

470p

2.2

k

2.2

k2SA1235F

10k

220p

0

00

33k

15k

1k

2SD1306 2SD1306

00

15k 0

220p

1M0.4750V

2P

4.7k

220p

1050V

M61529FP

10 50V

22

0p

0 1

1050V

10k1k

1016V

4.735V

1016V

4.735V

47

0p

1000p

0.1 47k

2.2k2.2k

470k

22k5.6k 5.6k

1SS355

A1

A2

A4

A5

A6

A7

B1

B2

B3

B4

B5

B6

B7

B8

B9

B1

0

C2

C1

C3

C4

C5

CD-MUTE

CLK

CE

TUNED

ST

TUMUTE

DI

VA

CS

/ST

R

DO

DI

MIC-SIG

MCLK

-VFL

CLK

DI

DO

CE

TUNED

ST

TUNER-L

GND

TUNER-R

TU-MUTE

VM+9V

CL

OC

K

GN

D

SW

OU

T

OU

T2

BB

_B

2

BB

_A

2

VO

LIN

2

SU

R2

/DP

L2

SU

R1

/DP

L1

CD

-L

TU

NE

R-L

TA

PE

-L

MD

-L

GA

ME-L

RE

CB

-2

TM

I2

TM

O2

TC

A2

TC

B2

TC

C2

TO

UT

2

RE

F

MIC

CD

-R

TU

NE

R-R

TA

PE-R

MD

-R

GA

ME-R

RE

CB

-1

TM

I1

TM

O1

TC

A1

TC

B1

TC

C1

TO

UT

1

VO

LIN

1

BB

-A1

BB

-B1

OU

T1

SA

OU

T

VC

C

DA

TA

(1/4)

MUTING

CONTROL

SWITCH

MUTINGMUTING

INPUT SELECT SWITCH,

TONE CONTROL,

ELECTRICAL VOLUME,

BASS BOOST AMP

11P

L

R

MD(VIDEO)

IN

THE ASSEMBLED

BLOCK

SUPPLIED WITH

TUNER UNIT(COAXIAL)

FM 75Ω

AM

LOOP

ANTENNA

(Page 32)

(Page 33)

(Page 31)

CX-JT7

3131

6-10. SCHEMATIC DIAGRAM – MAIN Board (2/4) (Suffix-11) – • See page 54 for IC Block Diagram. • See page 54 for Waveforms.

R233

R425

R424

CN309

C402

C202

C201

C203

C204

C237

C244

C232

C266

C248

C267

R267C269R271

C273 C247

C249

C254R284C253

R278

R270R282

R215

C260

C258R287R288 C259

R235

R286

R232R234

C261

C285 R285

Q228

C240 R253R246C221

R245R273

R269

R241 R242

D206

R251

R353

R352

R455

R406

R426

R466

D305

C392 C391 C390

R485

R430

R368

IC310

R272

R400 R401 R402 R404 R405

R412 R413

C401

R486

R418R417R416R415R419 R414

R407 R408 R409 R410

D306

R216

C250

C272

CN203

HP1

HPRE1

C234

R226 C226

C286

C233

C225

R225

C242C241C223

Q223

Q221 Q218

Q225

Q222

R260

IC201

GA1

JR309

JR308

JR307

JR306

JR305

JR304

JR303

R307

R231

R266

C268

IC309

JR316

Q220Q219

L201

R268

C450

R265

R252

C239

R283

D205

R220

CN202

22k

22k

22k

12P

0.1

1000p

1000p

1000p

1000p

1 50V

47 16V

4716V

0.01

2.250V

0.01

4.7k150V10k

1 50V 2.250V

2.250V

4.750V10k

10016V

22k

10k100

4.7k

0.47 50V

4.750V10k10k

2225V

10k

10k

2.2k22k

0.4750V

2200p 10k

2SB1116

1050V 10k

47k4716V

10k10k

10k

4.7k 4.7k

1SS355

4.7

11k

11k

11k

22k

22k

22k

1SS355

100p 100p 100p

100

10k

100

BU2099FV

10k

10k 10k 10k 10k 10k

10k 10k

0.1

100

10k10k10k10k10k 10k

10k 10k 10k 10k

1SS355

4.7k

2.250V

1 50V

3P

1000p

10k 2200p

2200p

1000p

2200p

10k

0.00470.00470.022100V

2SC2001

2SC3052F 2SC3052F

2SA1235F

2SC3052F

220

HA12237F

0

0

0

0

0

0

0

100

2.2k

4.7k

150V

BU2099FV

0

2SC3052F2SC3052F

4.7k

1050V

4.7k

22k

0.015

10k

1SS355

10k

8P

A1

A2

A4

A5

A6

A7

E1

E2

E3

19

20

21

22

23

24

18

SP

-F

LIN

K

CD-EN

TUMUTE

S-OUT

CLK

LC

K

TBL-SENSE

V-BASS

PB

-EQ

(R)

TA

I(R

)

EQ

OU

T(R

)

PB

-OU

T(R

)

RE

C-I

N(R

)

AL

C(R

)

REC-OUT(R)

VCC

ALC-DET

GND

IREF

TEST

AL

C(L

)

RE

C-I

N(L

)

PB

-OU

T(L

)

TA

I(L

)

EQ

OU

T(L

)

PB

-EQ

(L)

PB-NF2(L)

PB-NF1(L)

AIN(L)

RIP

BIN(L)

REC-RETURN

GND

BIN(R)

AIN(R)

PB-NF1(R)

(R)

PB-NF2

GND

LM-R

LM-F

TM-R

TM-F

TBL ADDRESS SENS

D+3.3V

M+9V

OPEN SW

SO

VDDVSS

DATA

CLOCK

LCK

SO

VDD

VSS

DATA

CLOCK

LCK

(2/4)(PB)

(DECK-A)

ERASE

(DECK-B)

(REC/PB/ERASE)

L-CH

R-CH

R-CH

L-CH

BIAS OSC

BIAS OSC

MUTING

MUTING MUTING

MUTING

SWITCH

REC ON/OFF

Q222,225SWITCH

REC BIAS

NC

NC

REC-OUT

(L)

RECMUTE-ON /OFF

MUTE-ON/OFF

A/B

NOR/HI

ALC-ON/OFF

NC

NC

NC

REC/PB EQ AMP

(CHASSIS)

E-1

E-2

E-3

NC

NC

NC

NC

CTRL3CTRL2

CTRL1

OE

NC

BB CTRL1

BB CTRL2

BB CTRL4

BB CTRL3

BASS BOOST CONTROLLER

MULTI CONTROLLER

NC

OE

REC

BIAS

A/B

PB MUTE

REC MUTE

REAR SP ON

/OFF

FRONT SP ON

TM-L (CD)

TM-R (CD)

LM-L (CD)

LM-R (CD)

TUNER

MUTE

/OFF

DECK A/B SELECT SWITCH,

I-BASS

(Page 30)

(Page 33)

(Page 29)

CX-JT7

3232

6-11. SCHEMATIC DIAGRAM – MAIN Board (3/4) (Suffix-11) – • See page 54 for IC Block Diagram.

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

CN311

CN312

CN306

CN310

C385

R3

35

R493 C491C315

R492

R491

R494 C492

C384

R495

R300

C341C367

C396

R421

C400

R333

R334

R479 R337 R467

Q314

R362

R361

R366

R367

R480

R363

C330C316R347

C439

C329

R364

C340R338

R339

D311

C3

70

C369

JR333 C386

Q327

Q328

R392

R315 Q372

C379 C377

R359

R371

R372

R391

D372 D371

D374

C398

R461R460

D312

Q373

R433

R434

Q491

Q492

Q304

Q323

IC303

JR336

CN303

M731

R470

R393

R370

C440

JR339

JR341

C383

C382

R332

R468

JR337

Q316Q315

R394

Q317

Q318

Q319

Q320

R336

R478

R331

R403

R375

R340

9P

19P

13P

5P

0.033 56

k

100k 0.0154.750V

220k

220k

220k 150V

0.033

22k

4.7k

4716V0.22 0

.22

10k

2225V

10k

8.2k

47k 1.5k 1.5k

2SK2158

22k

5.6k

270

4.7k

10k

22k

4.750V

4.750V4.7k

4.7 100V

4.750V

100k

4716V4.7k

1k

1SS355

10

50

V

10

50

V

0 4725V

2SA1235F

2SA953K

220

10k 2SC3052F

4725V

4.750V

470k

4.7k

4.7k

47k

1SS355 1SS355

1SS355

1050V

2.2k2.2k

UDZSTE-1713B

2SC2001LK

6802W

6802W

2SC3052F

2SK2158

2SA953K

2SC3052

NJM2156

0

3P3.3k

10k

10k

4.7100V

0

0

3300p

3300p

47k

82k

0

2SK21582SK2158

10

2SK2158

2SK2158

2SK2158

2SK2158

27k

2.2k

3.3k

820

4.7k

5.6k

B1

B2

B3

B4

B5

B6

B7

B8

B9

B1

0

F1

F2

F3

F4

F5

F6

F7

F8

F9

F10

ZZ1

ZZ2

ZZ3

ZZ4

ZZ5

ZZ6

ZZ7

ZZ8

ZZ1

ZZ2

ZZ3

ZZ4

ZZ5

ZZ6

ZZ7

ZZ8

CD-MUTE

V-BASS

18 19 20

HP

21

22

23

24

SP-F

LINK

HP CTL

D GND

R-OUT

HP-GND

L-OUT

FAN+

FAN-

FAN+

L-OUT

SP-GND

R-OUT

VM(AC)

VM(AC)

VCC

LINK/MATRIX

P-GND

L-CH

A-GND

PW-GND

A-GND

RELAY B+

P+7.0V

CD DRF

GN

D

GO

UT

GIN

VR

EF

OU

TB

LO

UT

B

LIN

B

HO

UT

B

HIN

B

INB

HO

UT

A

HIN

A

INA

LIN

A

LO

UT

A

OU

TA

BB

E

LP

OU

T

LP

IN

V+

(3/4)

SWITCH

FEED BACK

BASS BOOST

CONTROL

Q327,328,372,373

FAN MOTOR ON/OFF SWITCH

ON/OFF

SPEAKER

BASS BOOST

CONTROL

Q317-320

BASS BOOST ON/OFF SWITCH

BASS BOOST

ENHANCER

Q314-316

FERQUENCY

CONTROL

UNREG VM

IN-L

IN-R

(FAN)

D-GND

AMUTE

D.OUT

3.3V

3.3V

CD_RES

DI

DO

CL

MP3_CE

FSYNC

CD_WRQ

DRF

CD_CE

LC78646 CE

LC78646 WRQ

LC78684 SYNC

LC78646/LC78684 CLK

LC78646/LC78684 DO

LC78646/LC78684 DI

LC78646 RESET

R-CH

LC78684 CE(MP3)

RELAY

DRIVE

(Page 30)

(Page 44)

(Page 41)

(Page 27)

(Page 43)

(Page 33)

CX-JT7

3333

6-12. SCHEMATIC DIAGRAM – MAIN Board (4/4) (Suffix-11) –

CN304

D315 D313

CN307

R346

R387C397

R386

R388C345

C372 D3

64

R4

31

R379

D314

R482 R481

C399C419C418

D321 D322

C375C374C373

D301 D302

C380 C381

D304D303

C420 C421

R378

D319 D320

R483

R314

C363

IC304

R313

R432

C339

C364

D307

C371

JR334

R487

R488

IC305 IC306 IC308 IC313

C417

D308

Q331

Q330

D316

Q324

R348 R384

JR321

JR328

JR326

JR317

R309

Q301

Q302

R310

R427 R428

R484

JR302

31P

10EDB40-TB3 10EDB40-TB3

13P

22k

12k10010V

10k

1k10016V

1050V

1S

S3

55

15

0k

2.2k

10EDB40-TB3

4.7k 4.7k

47016V0.010.01


220025V0.010.01


47016V

4716V

10EDB40-TB310EDB40-TB3

220025V

22016V

10k


1k

100k

1050V

NJM4565M

100k

100

22016V

1050V

1SS355

4716V

0

0

0

TA7809S µPC3504HF TA7809S TA7810S

100010V

0

2SA1235F

2SC3052F

10EDB40-TB3

2SC3052F

0 1k

0

0

0

0

0

2SA1980G

2SC3052F

0

0 0

10k

0

C2

C1

C3

C4

C5

E1

E2

E3

F1

F2

F3

F4

F5

F6

F7

F8

F9

F10

MIC-S

MIC-SIG

FIL2

FIL1

-VFL

EVER+10V

MIC+10V

+4V

ST

TUNED

CE

DO

DI

CLK

MCLK

LCK

TBL-SENSE

CD-EN

S-MUTE

VACS/STR

DECK+9V

HOLD

O-POWER

S-OUT

MIC10V

HP

MIC-S

O-POWER

HOLD

S-MUTE

FIL1

FIL2

EVER+10V

-VFL

O-P

OW

ER

DE

CK

+9

V

O-P

OW

ER

+4

V

SYSTEM MUTE

DC-DET

VM+10V

HOLD

SW OUT

-VFL

VSTBY

FIL-2

FIL-1

SW LIMIT

P-0N

D-GND

-VFL

EVER 10V

MIC 10V

4V(SW)

BU1924 CLK

BU1924 DATA

TUNER STEREO

LC72121 CE

LC72121 DI

M61529 CLK

BU2099FB LCK

POWER RELAY

PROTECTOR (HOLDER)

STREAM IN(VACS)

SYSTEM MUTE

S-OUT

MIC GND

(4/4)

VF1

VF2

TUNER TUNED

LC72121/M61529/BU2099FV DO

LC72121/BU2099FV CLK

CD NUMBER SENS

BU UP DOWN/CD OPEN CLOSE

NC

TUNER S-METER

DECK 9V

MIC SIG

HP

A-GND

SW ON/OFF SENS

O-POWER

I OG

I OG

I OG

I OG

+9V REGULATOR +9V REGULATOR +10V REGULATOR+4V REGULATOR

Q330,331

POWER ON/OFF

RELAY DRIVE

Q301,302

B+ SWITCH

CENTER

VOLTAGE

GENERATOR

BUFFER

VCC

GND

(Page 32)

(Page 30) (Page 31)

(Page 43)

(Page 44)

CX-JT7

3434

6-13. PRINTED WIRING BOARD – MAIN Board (Suffix-11) – • See page 25 for Circuit Boards Location. :Uses unleaded solder.

B

R242

R251

R253

C225

C226

R225

R226

R220

Q221Q219

R266

R268

IC201

R252

C286

R234

R288

R287

R283

R284R2

78R2

35

R216

R270

R286

D205

Q225

R273

R245

R269

R232

R260

R271

R215

R265

R285

R267

R241

R282

C285

C201

C202

C203

C204

R346

Q218

R384

R348

JR30

0

C300

R233

D206

R482

R246

Q330

R431

R483

R481

R484

R378

R379D307

Q302

Q331

JR317

JR328

C390

R419

R412

JR32

1

R368

R367

R417

JR30

6

JR30

7

R416

R415

JR30

8R4

14

JR30

9

JR31

6

R485

C402

R307 C392

C391 R

430

C401

R410

R409

R408

R405

JR30

3

JR30

5

R418

R486

JR337

JR304

IC309

R401

R400

R402R404

D305

R436

R413

R407

JR326

R366

R339

R340

R332

R468

R333

R334

R479

R467

R337 R

375

R380

R336

R331

R403

R478

R353

R358

R397

Q312

R316

R300 R399

R395

R398

R396

R335Q323

R495

Q491

R494 C491

R493

IC303R34

7

R338

R370

R466JR339

R491

R455

R352

R406

R424

R425

Q310

C342

D306R42

6

R356

JR33

4

C366

C365

R492

R327 IC301

R330

C319

C353

JR31

1

JR31

0

R325

R319JR31

3JR31

2

C356

C361

C355

R321

JR32

2

C354

R101R102

D317

R323

R324

D364

R428

R488

R427

R487

JR302

JR336

R421

R391

R359Q372

D372

D371

R362

R361D311

R363

R372

D374

R371

R460

R461

R386

Q324

R388

R314

R387

R326

R318

C362

R328

R322

R320

R313

R432

R365

R303

R301

R304

R310

R309

C351C352

IC304

D312

R364

R480

R470

R393

Q327R315

R392

R394

R317

JR333

R354

Q311 R355JR341

R231

Q222

IC310

Q220

R272

JR325

R302

D308

JW310

JW39

5

JW393

JW390

JW400

JW387JW389

JW26

4

JW25

3

JW36

0

JW37

0

JW300

JW320

JW386

JW43

0JW38

0

JW397 JW410

JW266

JW396

JW394

JW42

0

JW315

JW316

JW312

JW313

JW314

JW32

2

JW32

1

JW31

9

JW32

4

JW32

5

JW32

6

JW32

3

JW36

5

JW32

7

JW363

JW362

JW382

JW384JW340

JW383

JW26

7

JW222

JW268

JW359

JW361

JW37

1

JW373

JW372

JW273

JW49

4

JW217

JW210

JW209

JW216

JW219

JW231 JW350

JW398

JW392

JW46

0

JW330

JW47

0

JW25

1

JW232

JW223

JW225

JW45

6

JW309

JW303

JW302

JW301

JW30

7

JW30

5

JW30

4JW30

8

JW344

JW345

JW342

JW10

8

JW10

6

JW10

7

JW33

3

JW33

2

JW33

1

JW328

JW32

9

JW103

JW102

JW11

2

JW10

9

JW113JW449

JW452

JW448

JW269

JW357

JW356

JW33

5

JW354

JW355

JW358

JW265

JW46

3

JW338

JW337

JW341

JW347JW346

1

JW462

JW499

JW45

7JW

479

JW48

1

JW466

JW467

JW468

JW482

JW471

JW473

JW472

JW476

JW475

JW474

JW469

JW44

5JW

443

JW263

JW478

JW415

JW455

JW454

JW453

JW45

8

JW44

6

JW44

4

JW45

0

JW459

JW461

JW440

JW44

1

JW42

6

JW42

8

JW42

7

JW43

4

JW43

8

JW43

9

JW42

9

JW27

5

JW43

2

JW43

3

JW43

7

JW44

2

JW411

JW407

JW408

JW409

JW404

JW270

JW27

2

JW271

JW405

JW406

JW279

JW422

JW424

JW423

JW43

6

JW274

JW417

JW418

JW416

JW419

JW421

JW234

JW238

JW235

JW22

6

JW22

7

JW23

6

JW239

JW20

5

JW20

0

JW23

7

JW213JW21

4

JW206

JW212

JW211

JW491

JW488

JW487

JW483

JW49

3

JW489

JW492

JW207

JW490

JW276

JW447JW486

JW485

JW484

JW20

2

JW203

JW20

1

JW20

4

JW27

8

JW498

JW495

JW496

JW497

JW435

GA1

Q328

IC313

Q301C381

IC306

D321

D319

C420

C375

C374

C418 C419

C373

CN307CN306

C421 D322

D320

C377

C379

C412

C318

C320

C339

C393

C337

C324

C326

C328

C314

C301 C302

C334

C332

CN303

D316

C397

C363

C364

C345

C304

C309

C411

C417

C399

IC308C371

C380

C372

IC30

5

D304

D303D301

D302

C398

Q373

Q304

C321

C317

C325

C101

C370

C303

C327C323

C102

CN312

C357

C333C331

CN101

D102

C311

C312

C313

CN309

Q492

C492

C340

C341

C384

D313

D314

C450

D315

C369

C396

C382

C383

C315

C316

C329 C330

C400

C385

C367

CN304

Q315Q316

Q314Q318Q319Q320

CN311

Q317

CLP3

C273

Q223Q228

C250

C260

C248

C240

C247

C221

C249

C258

C272

C244

C253

C269

C268

C239

C241

C267

C266

CN310

CN203

C233

C242

L201

CN202

C232C2

34C254

C259

C223

C103C103

W1W1

C237

JW385

JW36

8

C310

JW218 JW221

JW220

JW224

C261

JW25

2

R434R433

C440

C439

C386

JW348

12

JW277

1 20

40 21

10 11

31 30

MAIN BOARD

1-688-080- 11

1

2 10

11

TUNER UNITSUPPLIED WITH THEASSEMBLED BLOCK

FM 75Ω(COAXIAL)

ANTENNA

AMLOOP

M731(FAN)M

1 3

R

L

MD (VIDEO)IN

JK302

E

E

E

E

131

(CHASSIS)

131

E

31313131

EE

CX-JT7 JAX-PK7.pdfCX-JT7 Ver 1.0 2003.04 9-877-252-01 Sony Corporation 2003D0500-1 Home Audio...

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Transcript of CX-JT7 JAX-PK7.pdfCX-JT7 Ver 1.0 2003.04 9-877-252-01 Sony Corporation 2003D0500-1 Home Audio...