JVC MX-J770V, MX-J880V Service Manual

SERVICE MANUAL

COMPACT COMPONENT SYSTEM

MX-J770V MX-J880V

SOUND

VOCAL

SLEEPECHO

MODE

MASKING

FM MODE

STILL

V.INTRO

SUBTITLEHIGHLIGHT

TAPE

A/B

REC

START/STOP

ON SCREEN

KEY CONTROL

SELECT FADE MUTING

RM–SMXJ770V REMOTE CONTROL

This illustration is MX-J770V

Each difference point

Model CD/DECK/RECEIVER SPEAKER

MX-J770V CA-MXJ770V

MX-J880V CA-MXJ880V

SP-MXJ770V SP-MXJ880V

Tray fitting

Silver

Area Suffix

US UX

Color

Panel

Silver & blue Silver

Champagne-gold Champagne-gold

Net Front

Light blue

Gray

Singapore

Saudi Arabia

COMPACT

SUPER VIDEO

COMPACT

DIGITAL VIDEO

COMPACT

DIGITAL AUDIO

Contents

Safety precautions Important for laser products Preventing static electricity Precautions at disassembly and parts replacement Disassembly method Adjustment method

1-2 1-3 1-4

1-5 1-6 1-31

Diagnosis which uses extension wire method Flow of functional operation until TOC read Maintenance of laser pickup Replacement of laser pickup Description of major ICs

1-35

1-36 1-37 1-37 1-38

No.20861

Jul. 2000

MX-J770V/MX-J880V

Safety Precautions

1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further relieve the manufacture of responsibility for personal injury or proper ty damage resulting therefrom.

3. Many electrical and mechanical par ts in the products have special safety-related characteristics.

These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.

4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the or iginal lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.

5. Leakage current check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check.

Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet , particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.)

Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, par ticularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).

0.15 F AC TYPE

1500 10W

Good earth ground

AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity)

Place this probe on each exposed metal part.

Warning

1. This equipment has been designed and manufactured to meet international safety standards.

2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.

3. Repairs must be made in accordance with the relevant safety standards.

4. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check setting for local voltage.

Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.

1-2

CAUTION

Important for laser products

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions.

4.CAUTION : The compact disc player uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able to function.

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

VARNING : Osynlig laserstrålning är denna del är öppnad

och spårren är urkopplad. Betrakta ej strålen.

VARO : Avattaessa ja suojalukitus ohitettaessa olet

alttiina näkymättömälle lasersäteilylle.Älä katso säteeseen.

ADVARSEL : Usynlig laserstråling ved åbning , når

sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling.

ADVARSEL : Usynlig laserstråling ved åpning,når

sikkerhetsbryteren er avslott. unngå utsettelse for stråling.

REPRODUCTION AND POSITION OF LABELS

WARNING LABEL

DANGER : Invisibie laser radiation when open and interlock or defeated. AVOID DIRECT EXPOSURE TO BEAM (e)

VARNING : Osynlig laserstrålning är denna del är öppnad och spårren är urkopplad. Betrakta ej strålen. (s)

VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle.Älä katso säteeseen. (d)

ADVARSEL :Usynlig laserstråling ved åbning , når sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling. (f)

CAUTION

Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.

CLASS 1 LASER PRODUCT

MX-J770V/MX-J880V

1-3

MX-J770V/MX-J880V

Preventing static electricity

1. Grounding to prevent damage by static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

2. About the earth processing for the destruction prevention by static electricity

In the equipment which uses optical pick-up (laser diode), optical pick-up is destroyed by the static electricity of the work environment. Be careful to use proper grounding in the area where repairs are being performed.

2-1 Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.

2-2 Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

3. Handling the optical pickup

1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)

2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode.

4. Handling the traverse unit (optical pickup)

1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector.

3. Handle the flexible cable carefully as it may break when subjected to strong force.

4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it

Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for pick-up and how to detach the CD traverse mechanism.

CD changer mechanism

assembly

1. Remove the disk stopper and T. bracket on the CD changer mechanism assembly.

2. Disconnect the harness from connector on the CD motor board.

3. CD traverse unit is put up as shown in Fig.1.

4. Solder is put up before the card wire is removed from connector CN601 on the CD servo control board as shown in Fig. 2. (When the wire is removed without putting up solder, the CD pick-up assembly might destroy.)

5. Please remove solder after connecting the card wire with CN601 when you install picking up in the substrate.

1-4

CD traverse

unit

Flexible cable

Fig.1

Soldering

Fig.2

MX-J770V/MX-J880V

Precautions at disassembling and parts replacement

This model is charged with electricity on the power board even if the power cord is unplugged. Therefore, always discharge electricity in accordance with the steps given below before starting disassembling of the unit and/or replacement of parts.

While referring to the disassembling steps, remove the

1. metal cover and the CD changer mechanism.

Set electrical resistances of 1kohm, 1/4W to the places between

2. the + and - terminals of condensers VH(C204, C205) and VL(C214, C215) on the power board, and discharge electricity for 4 ~ 5 seconds. Connection should be made at first for VH.

C214

C215

C205

C204

Power board

1-5

MX-J770V/MX-J880V

Disassembly method

Removing the metal cover

(See Fig.1 to 3)

Remove the six screws A attaching the metal cover on the back of the body.

Remove the two screws B attaching the metal cover on both sides of the body.

Remove the metal cover from the body by lifting the rear part of the cover.

ATTENTION:

Do not break the front panel tab fitted to the metal cover.

Metal cover

Fig.1

Fig.2

Metal cover

Fig.3

1-6

MX-J770V/MX-J880V

Removing the CD changer mechanism assembly (See Fig.4 to 6)

Prior to performing the following procedure, remove the metal cover.

For the card wire connecting the CD changer mechanism board and the main board, disconnect it from connector CN868 on the main board.

Remove the two screws C attaching the CD changer mechanism assembly on both sides of the body.

Remove the two screws D attaching the CD changer mechanism assembly to the rear panel. Remove the screw E attaching the AUX terminal, two screws

F attaching main speakers terminal and two screws H attaching the sub woofers terminal on the back of

the body.

Remove the screw G attaching the CD optical digital output terminal and screw I attaching video out terminal.

Disconnect the harness from connector CN102 on the video CD board, and pull out the earth wire TW100 on the video CD board.

Pull the top of rear panel and the front panel assembly outward respectively, then remove the CD changer mechanism assembly and video out terminal by lifting the rear part of the CD changer mechanism assembly.

CD changer mechanism assembly

Front panel assembly

Main board

CN868

CD changer mechanism assembly

Rear panel

CN102

Fig.4

Fig.5

CD changer mechanism board

Rear panel

CN870

CN871

Input / output board

Front panel assembly

TW100

Rear panel

Removing the video CD board (See Fig.7)

Prior to performing the following procedure, remove the CD changer mechanism assembly.

Reverse the CD changer mechanism assembly.

Remove the two screws J attaching the bracket.

Remove the screw K attaching the video CD board.

Disconnect the card wire from connector CN100 and CN101 on the video CD board.

At first, remove the claw a. Then remove the claw b while raising the video CD board in the direction of the arrow mark as figure. After removing the claw b, you can removing the video CD board by pulling it backward.

SUB WOOFERS

terminal

Bracket

Video CD board

CN100

CLAW b

CN101

CD changer

mechanism assembly

Fig.6

Fig.7

MAIN SPEAKERS

terminal

Video out board

CLAW a

Video CD board

1-7

MX-J770V/MX-J880V

Removing the front panel assembly

(See Fig.8 to 10)

Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly.

Remove the four screws L attaching the front panel assembly on the bottom of the body.

Disconnect the card wire from connector CN865 on the main board and pull out the earth wire on the main board.

Disconnect the card wire from connector CN315 on the input / output board.

Disconnect the harness from connector CN901 on the relay board on the back of the front panel assembly.

Disconnect the harness from connector CN912 on the input / output board.

Front panel assembly

Earth wire

Fig.8

Main board

CN865

Front panel assembly

Disconnect connector CN870 and CN871 on the input/output board from the main board.

Release the two joints c and d on the lower part of the sides using a screwdriver, and remove the front panel assembly toward the front.

Front panel assembly

Main board

CN865

CN912

Relay board

CN901

Fig.9

CN871

Joint c

CN870

1-8

CN315

Joint d

Input / output board

Fig.10

Removing the Microphone terminal board assembly (See Fig.11 and 12)

Prior to performing the following procedure, remove the metal cover, CD changer mechanism assembly and the front panel assembly.

Pull out the MIC volume knob from the front side.

Remove the two screws M attaching the microphone terminal board assembly.

Remove the screw N attaching earth wire. Then release the earth wire from the clamp on the upper part of the cassette mechanism assembly.

Remove the microphone terminal board assembly toward you.

MX-J770V/MX-J880V

MIC volume knob

Fig.11

Microphone terminal board assembly

Removing the rolling panel assembly

(See Fig.13 and 14)

Prior to performing the following procedure, remove the microphone terminal board assembly.

Disconnect the harness from connector CN900 and the card wire from connector CN906 on the relay board on the back of the rolling panel assembly respectively.

Disconnect the harness from connector CN862, CN863, CN850, CN851 and CN815 on the main board respectively. Disconnect the card wire from connector CN880 on the main board.

Disconnect the card wire from connector CN869 and the harness from CN883 and CN884 on the main board respectively.

Main board

Relay board

CN900

Relay board

CN906

CN883,CN884

Rolling panel assembly

CN869

Fig.12

Cassette

mechanism

assembly

Fig.13

CN815

Main board CN850,CN851

Remove the four screws O attaching the rolling panel assembly.

ATTENTION:

For the harness which should be connected to connector CN869, CN883 and CN884 on the main board, get them through the slots under the rolling panel when reattaching the rolling panel assembly to the front panel (Refer to Fig.14)

Main board CN862,CN863

Rolling panel assembly

Main board

CN880

Relay board

CN900

Fig.14

1-9

MX-J770V/MX-J880V

Removing the main board

(See Fig.15 and 16)

Prior to performing the following procedure, remove the front panel assembly, the microphone terminal board and the rolling panel assembly.

Disconnect the harness from connector CN867 on the main board.

Disconnect the card wire from connector CN879 on the main board (Before pulling out the card wire, stand the part e of CN879 as shown in Fig.16).

Remove the two screws P attaching the main board.

Removing the cassette mechanism assembly (See Fig.17)

Rolling panel assembly

CN867

CN879

Main board

Fig.15

CN879

Fig.16

Prior to performing the following procedure, remove the front panel assembly.

Disconnect the card wire from connector CN306 on the cassette mechanism board.

Remove the four screws Q and three screws R attaching the cassette mechanism assembly.

CN306

Cassette mechanism board

Fig.17

1-10

Prior to performing the following procedure, remove the front panel assembly and the rolling panel assembly.

Function board1 (See Fig.18)

Remove the two screws S attaching the function board 1.

Function board2 (See Fig.18)

Remove the two screws T attaching the function board 2.

Bass-level regulator board (See Fig.19)

Pull out the sub woofer volume knob on the front side of the front panel assembly and remove the nut attaching the bass-level regulator board.

Release the two joints f. Unsolder FW951 on the bass-level regulator board and disconnect the harness connected to the power switch.

Main volume & headphone board (See Fig.19)

Pull out the volume knob on the front side of the front panel assembly and remove the nut attaching the main volume & headphone board.

Remove the two screws U attaching the main volume & headphone board on the back of the front panel assembly and release the two joints g.

Unsolder FW850 on the main volume & headphone board and disconnect the harness connected to the eject switch board.

Remove the screw V attaching the earth wire extending from the main volume & headphone board.

Removing the boards in the front panel assembly (See Fig.18 to 20)

Fig.18

Fig.19

Function

board 1

Function

board 2

FW850

Eject switch board

Joints g

Main volume & headphone board

Power switch board

Joints f

Bass-level regulator board

Cassette mechanism assembly

FW951

MX-J770V/MX-J880V

1-11

MX-J770V/MX-J880V

Power switch board (See Fig.20)

Remove the two screws W attaching the power switch board. Unsolder FW951 on the power switch board and disconnect the harness extending to the bass-level regulator board.

Eject switch board (See Fig.20)

Remove the four screws X attaching the eject switch board. Unsolder FW850 on the eject switch board and disconnect the harness extending to the main volume & headphone board.

Remote control port board (See Fig.20)

Remove the screw Y attaching the remote control port board.

Removing the relay board and fixing board (See Fig.21)

Eject switch

board

FW850

Main volume & headphone board

Remote control port board

Fig.20

Power switch board

FW951

Bass-level regulator board

Prior to performing the following procedure, remove the metal cover and CD changer mechanism assembly.

There is no need to remove the front panel assembly.

Disconnect the harness from connector CN900 and CN901 on the relay board on the back of the rolling panel assembly.

Disconnect the card wire from connector CN905 and CN906 on the relay board on the back of the rolling panel assembly.

Remove the screw Z attaching the relay board. Remove the relay board from the groove i.

Remove the screw A attaching the fixing board and remove the fixing board from the groove j.

CN900

CN901

Groove i

Relay board

CN905

CN906

Rolling panel assembly

Fixing board

Groove j

Fig.21

1-12

Prior to performing the following procedure, remove the metal cover and CD changer mechanism assembly.

Remove the two plastic rivets attaching the joint board, and remove the joint board.

Disconnect the card wire from connector CN1 on the tuner board.

Remove the two screws B attaching the tuner board on the back of the body.

Removing the tuner board

(See Fig.22 and 23)

Prior to performing the following procedure, remove the tuner board.

Disconnect the card wire from connector CN315 on the input / output board.

Remove the screw C attaching the input / output board on the lower side of the body.

Remove the five screws, E, F & H attaching the AUX, main speakers, sub woofers terminal board on the back of the body.

Remove the screw G attaching the CD optical digital output back of the body.

Disconnect the harness from connector CN912 on the input / output board and pull out the earth wire on the main board.

Disconnect connector CN870, CN871, CN612, CN711 and CN712 on the input / output board by pulling out them outward. Remove the input / output board from the body.

Removing the input / output board

(See Fig.22 and 23)

Fig.22

Fig.23

Tuner board

Plastic rivet

Joint board

Input / output board

Rear panel

CN1

CN871

CN870

CN711

CN712

CN315

Rear panel

MX-J770V/MX-J880V

1-13

MX-J770V/MX-J880V

Removing the rear cover / rear panel

(See Fig.24 to 27)

Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly.

There is no need to remove the front panel assembly.

Remove the two screws D attaching the rear cover on the back of the body.

Remove the five screws E & F, H attaching AUX, main speakers and sub woofers terminal board to the rear panel on the back of the body.

Remove the screw G attaching the CD optical digital output terminal.

Remove the five screws Z attaching the heat sink and the pre-amplifier board to the rear panel on the back of the body.

Remove the two screws Y attaching the voltage selector to the rear panel on the back of the body.

Rear cover

Rear panel

Fig.24

Heat sink

Remove the screw X attaching the rear panel to the chassis base on the back of the body.

Remove the two screws B attaching the tuner board on the back of the body.

Release the two joints k and l on the rear panel bottom using a screwdriver, and detach the rear panel backward.

Rear panel

Fig.25

Rear panel

1-14

Fig.27

Joint l

Joint k

Fig.26

Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly, the tuner board, input / output board and the rear cover / rear panel.

There is no need to remove the front panel assembly.

Disconnect the harness from connector CN901 on the relay board on the back of the rolling panel assembly.

Disconnect the harness from connector CN713 on the pre-amplifier board.

Remove the two screws H attaching the heat sink to the power & main amplifier board on the back of the body.

Remove the fore screws I & J attaching the preamplifier board and IC to the heat sink.

Remove the bracket, then detach the pre-amplifier board from the heat sink.

Removing the pre-amplifier board / heat sink (See Fig.28 to 30)

Fig.28

Fig.29

Fig.30

Pre-amplifier board

CN713

Relay board

CN901

Pre-amplifier board

Power & main amplifier board

Heat sink

Pre-amplifier board

Bracket

MX-J770V/MX-J880V

1-15

MX-J770V/MX-J880V

Removing the power & main amplifier board (See Fig.31 and 32)

Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly, the rear cover / rear panel, the tuner board, the input / output board and the pre-amplifier board.

Remove the four screws K attaching the transf. on the power & main amplifier board through the upper side slots.

Remove the two plastic rivets fixing the power & main amplifier board.

Remove the cord stopper by pushing it upward.

Cut off the bands m and n fixing the power cord and unsolder the power cord on the power & main amplifier board.

Power & main amplifier board

Plastic rivet

Fig.31

Plastic rivet

Power & main amplifier board

Cord stopper

Fig.32

Soldered part

Band m

Band n

1-16

MX-J770V/MX-J880V

Prior to performing the following procedure, remove the rolling panel assembly and the main board.

Remove the two screws L attaching the multi-control assembly on both sides.

Remove the multi-control assembly outward while pushing the right and left hooks fixing multi-control assembly outward respectively.

Removing the multi-control assembly

(See Fig.33 to 35)

Prior to performing the following procedure, remove the rolling panel assembly, the main board and the multi-control assembly.

Remove the four screws M attaching the cover and the bracket.

Pull out the right and left panel holders outward respectively by releasing the tabs o outward.

Remove the cover and the bracket. Remove the two screws N attaching the multi-control

board.

Removing the multi-control board

(See Fig.36 to 38)

Multi-control assembly

Fig.36

Fig.37

Fig.38

Fig.35

Fig.33

Fig.34

Multi-control assembly

Hook

Bracket

Cover

Bracket

Tab o

Panel holder

Multi-control board

1-17

MX-J770V/MX-J880V

Removing the drive motor assembly

(See Fig.39 to 42)

Prior to performing the following procedure, remove the rolling panel assembly and the main board.

Remove the relay board and fixing board (Refer to Fig.21).

Remove the two screws O attaching the motor bracket and remove the motor lead staple p.

Remove the two screws P attaching the shaft bracket.

Remove the motor belt.

Remove the three screws Q attaching the side bracket.

Remove the shaft assembly from the rolling panel assembly by lift up the shaft assembly upward.

Remove the drive motor upward.

CN900

CN901

Groove i

Relay board

CN905

Rolling panel assembly

Fixing board

Groove j

CN906

Fig.21

Side bracket

Relay board

Shaft bracket

Fixing board

Fig.39

Motor bracket

Motor belt

Motor lead staple p

Fig.40

1-18

Fig.42

Shaft assembly

Drive motor

Fig.41

MX-J770V/MX-J880V

Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly.

Disconnect the card wire from connector CN101 and CN102 on the super VCD control board.

Remove the two plastic rivets attaching the super VCD control board.

Removing the super VCD control board

(See Fig.43)

Fig.43

CD changer

mechanism assembly

Super VCD control board

Plastic rivet Plastic rivet

CN101

CN102

1-19

MX-J770V/MX-J880V

Bottom

< Speaker section >

Removing the speaker cover (See Fig.1)

Remove the five screws A attaching the speaker cover on the side of the body.

Removing the sub woofer unit (See Fig.2 and 3)

Remove the four screws B attaching the sub woofer unit.

Two plug wires connected with the sub woofer unit are pulled out.

Removing the ornament panel assembly (See Fig.4 to 8)

Remove the saran board from the speaker box.

1. (Saran board can be detached by pulling the side of Saran board forward.)

The plus driver is inserted in the holder, it is lifted,

2. and the holder is removed.

Four holders are removed, and four screws C under

3. that are removed.

Screw

Screw A

Speaker cover

Fig.1

Sub woofer

unit

Screw B

Fig.2

Sub woofer

unit

The minus driver is inserted in the concave part in the

4. speaker box bottom and inserts in the interior little by little.

CAUTION : Please apply the felt or the cloth, etc.

to damage neither the ornament panel nor the cabinet when the ornament panel assembly is detached when working.

Two plug wires connected with the

5. middle range unit are pulled out.

Holder

Ornament

panel

assembly

Fig.6

top

Middle range

unit

Plug wire

(Yellow)

Plug wire

(Red)

Fig.3

Saran board

Fig.4

Plug wire

(Black)

Ornament panel assembly

concave part

1-20

Bottom

Fig.7

Ornament

panel

assembly

Plug wire

(Black)

Fig.8

Holder &

screw C

Holder &

screw C

Fig.5

MX-J770V/MX-J880V

Ornament

panel

assembly

Middle range

unit

Fig.11

Fig.10

Fig.9

Screw D

Plug wire

(White)

Plug wire

(Blue)

Screw D

Screw E

Plug wire

(Blue / Black)

Woofer

unit

Plug wire

(Yellow / Black)

Woofer

unit

Remove the ornament panel assembly. Remove the two screws D attaching the middle

range unit. Two plug wires connected with the middle range unit

are pulled out.

Removing the middle range unit (See Fig.9)

Remove the ornament panel assembly. Remove the four screws E attaching the woofer unit. Two plug wires connected with the woofer unit

are pulled out.

Removing the woofer unit (See Fig.10 and 11)

1-21

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