JVC NXD-5, NXD-7 Service manual

SERVICE MANUAL

COMPACT COMPONENT SYSTEM

MB711<Rev.002>200910SERVICE MANUAL

NX-D7UX, NX-D7UN, NX-D7EE, NX-D7UW,

NX-D7UH, NX-D5UG, NX-D5UX, NX-D5UN,

NX-D5EE, NX-D5UW, NX-D5UH

SP-NXD7W

(for NX-D7) (for NX-D7/NX-D5)

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)

SP-NXD7F

CA-NXD7

CA-NXD5

SP-NXD7F

SP-NXD7W

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

No.MB711<Rev.002>

2009/10

SPECIFICATION

Amplifier section

Output Power NX-D7 MAIN SPEAKERS 230 W (115 W + 115 W) at 3 Ω (10% THD)

SUBWOOFERS 230 W (115 W + 115 W) at 3 Ω (10% THD)

NX-D5 MAIN SPEAKERS 230 W (115 W + 115 W) at 3 Ω (10% THD)

SUBWOOFERS 115 W at 3 Ω (10% THD)

Audio Input AUDIO IN: Stereo mini (

500 mV/47 kΩ (at “AUDIO LVL3”) 250 mV/47 kΩ (at “AUDIO LVL2”) 125 mV/47 kΩ (at “AUDIO LVL1”)

Digital Input/Output OPTICAL DIGITAL OUTPUT (output only) -21 dBm to -15 dBm (660 nm ±30 nm)

NX-D7 Bluetooth ADPT

USB1:VIDEO/AUDIO PLAY (input only)

USB2:AUDIO REC/PLAY (input and output)

HDMI MONITOR OUT (output only)

NX-D5 USB: REC/PLAY (input and output)

HDMI MONITOR OUT (output only)

VIDEO OUT Color system NTSC/PAL (interlaced/progressive)

VIDEO (Composite) 1 V(p-p)/75 Ω COMPONENT (Y) 1 V(p-p)/75 Ω

HDMI MONITOR OUT 480p/576p/720p/1080i/1080p

Speaker impedance 3 Ω - 16 Ω

FM tuning range 87.50 MHz - 108.00 MHz

AM tuning range 531 kHz - 1 710 kHz (at 9 kHz)

530 kHz - 1 710 kHz (at 10 kHz)

Region codes Middle East 2

South East Asia 3

Central and South America, Australia 4

Dynamic range 80 dB

Horizontal resolution 500 lines

Wow and flutter Immeasurable

Recording format MP3/WMA format

USB specification Compatible with USB 2.0 Full Speed

Compatible device Mass storage class

Compatible system FAT16, FAT32

Bus power supply DC 5 V 500 mA

Version Bluetooth ver. 2.0 + EDR Class 1/Class 2

Compatible Bluetooth profile A2DP, AVRCP

Communication format 2.4 GHz FHSS

Output power DC 5 V 55 mA

Ø 3.5 mm)

(PB/PR) 0.7 V(p-p)/75 Ω

Tuner section

Disc player section

USB section

Bluetooth section (NX-D7)

HDMI section

1-2 (No.MB711<Rev.002>)

General

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

For Australia: AC 240 V , 50 Hz, For Russia: AC 230V , 50 Hz

Power consumption NX-D7 130 W (at operation)/21 W (at standby) /1 W or less (at ECO mode)

NX-D5 85 W (at operation)/16 W (at standby) /1 W or less (at ECO mode)

Dimensions (approx.) 195 mm × 333 mm × 313 mm (W × H × D)

Mass (approx.) 3.5 kg

Main Speaker

Type 3-way 3-speaker Bass Reflex Type (Magnetically-Shielded Type)

Speaker units Tweeter 2.0 cm cone × 1

Mid Range 5.0 cm cone × 1 Woofer 16.0 cm cone × 1

Impedance 3 Ω

Power handling capacity 115 W

Frequency range 40 Hz - 20 000 Hz

Sound pressure level 84 dB/W/m

Dimensions (W × H × D) 205 mm × 409.5 mm × 290.5 mm

Mass 3.6 kg each

Subwoofer

Type 1-Way Bass Reflex Type (Magnetically-Shielded Type)

Speaker units 16.0 cm cone × 1 Impedance 3 Ω

Power handling capacity 115 W

Frequency range 40 Hz - 5 000 Hz

Sound pressure level 83 dB/W/m

Dimensions (W × H × D) 205 mm × 409.5 mm × 290.5 mm

Mass 3.5 kg

Design and specifications are subject to change without notice.

(No.MB711<Rev.002>)1-3

SECTION 1

PRECAUTION

1.1 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 manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts 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 original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassembling.

(5) Leakage shock hazard testing

After reassembling 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, 1,000Ω per volt or more sensitivity in the following manner. Connect a 1,500Ω 10W resistor paralleled by a 0.15µF AC-type capacitor between an ex-

posed 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, particularly 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.).

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

0.15 F AC TYPE

Place this probe on

1500 10W

Good earth ground

1.2 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.

1.3 Caution

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.

1.4 Critical parts for safety

In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)

each exposed metal part.

1-4 (No.MB711<Rev.002>)

1.5 Preventing 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.

1.5.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed.

(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) 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 palate

(3) Handling the optical pickup

• 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.)

• 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.

1.6 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) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.7 Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for the pickup unit.

• Apply solder to the short land sections before the card wire is disconnected from the connector on the servo board. (If the card wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)

• In the assembly, be sure to remove solder from the short land sections after connecting the card wire.

Solder short land section

(No.MB711<Rev.002>)1-5

1.8 Important for laser products

1.CLASS 1 LASER PRODUCT

2.CAUTION :

(For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments.

3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam.

4.CAUTION : This laser product uses visible and/or 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 defeated. 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 here in may result in hazardous radiation exposure.

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

REPRODUCTION AND POSITION OF LABELS and PRINT

WARNING LABEL and PRINT

1-6 (No.MB711<Rev.002>)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MB711<Rev.002>)1-7

SECTION 3

DISASSEMBLY

3.1 Main body (Used figure are NX-D7)

3.1.1 Removing the Top cover (See Fig.1, 2 and 3)

(1) Remove the five screws A and one screw B attaching the

Side panel. (See Fig.1)

(3) Disengage two hooks a engaged both side of the Top cov-

er. (See Fig.3)

hook a

Fig.3

3.1.2 Removing the Rear panel (See Fig.4, 5)

(1) Disconnect the card wire from Tuner pack connected to

connector CN306

(2) Disconnect the connector wire from FAN connected to con-

nector CN303 of the Main board. (See Fig.4)

of the Main board. (See Fig.4)

Fig.1

(2) Remove the six screws C attaching the both side of the

Side panel and then side to backward to remove the Side panel. (See Fig.2)

CN303

CN306

Fig.4

1-8 (No.MB711<Rev.002>)

Fig.2

(3) Remove the two screws D attaching the Main board.

(See Fig.5)

(4) Remove the one screw E attaching the DVD board.

(See Fig.5)

(5) Remove the two screws F attaching the Mecha chassis.

(See Fig.5)

(6) Remove the two screws G attaching the Amp board.

(See Fig.5)

(7) Remove the two screws H attaching the Voltage selector

board. (See Fig.5)

3.1.3 Removing the Main board (See Fig.6)

(1) Disconnect t the card wire from USB board connected to

connector CN502

(2) Disconnect the card wires from Ripping module board con-

nected to connectors CN305 board.

(3) Disconnect the card wire from Loader board connected to

connector CN307

(4) Disconnect the connector wire from Power board connect-

ed to connector CN180 of the Main board.

(5) Disconnect the card wire from DVD board connected to

connector CN500

(6) Disconnect the card wire from Amp board connected to

connector CN503

(7) Disconnect the card wires from DVD board connected to

connectors CN310 and CN308 of the Main board.

(8) Disconnect the parallel wire from Amp board connected to

connector CN181

(9) Disconnect the card wire from Mic board connected to con-

nector CN304

(10) Disconnect the card wires from Front panel connected to

connectors CN301 and CN312 of the Main board.

(11) Disconnect the parallel wire from Front panel connected to

connector CN315 of the Main board.

(12) Remove the two screws J attaching the Main board.

of the Main board.

and CN501 of the Main

of the Main board.

CN304

CN301 CN315

Fig.5

CN308

CN310

CN503

CN181

3.1.4 Removing the DVD mechanism (See Fig.7, 8)

(1) Disconnect the connector wire from USB board connected

to connector CN811

CN500

Fig.6

of the DVD board. (See Fig.7)

CN307

CN180

CN312 CN305

CN501

CN502

CN811

Fig.7

(No.MB711<Rev.002>)1-9

(2) Disconnect the connector wire from USB board connected

to connector CN801 of the Connection board. (See Fig.8)

(3) Remove the two screws K attaching the both side of the

DVD mechanism. (See Fig.8)

(4) Disengaged two hooks b engaged both side of the DVD

mechanism, (See Fig.8)

Khook bCN801

3.1.6 Removing the Amp board (See Fig.11, 12)

(1) Disconnect the connector wire from Amp board connected

to connector CN2

CN2

of the Power board. (See Fig.11)

Fig.8

3.1.5 Removing the Front panel (See Fig.9, 10)

(1) Remove the two screws L attaching the Front panel.

(See Fig.9)

(2) Disengage one hook c engaged Front panel. (See Fig.9)

hook c

Fig.9

(3) Disengage two hooks d engaged both side of the Front

panel. (See Fig.10)

Fig.11

(2) Remove the two screws M attaching the Amp board.

(See Fig.12)

Fig.12

3.1.7 Removing the Voltage selector board (See fig.13, 14)

(1) Disconnect the connector wire from Voltage selector board

connected to connector CN4 (See Fig.13)

of the Power board.

hook d

1-10 (No.MB711<Rev.002>)

CN4

Fig.13

Fig.10

(2) Remove the one screw N attaching the Voltage selector

board. (See Fig.14)

3.1.10 Removing the Touch sensor board (See Fig.17, 18)

(1) Disconnect card wire from LED board connected to con-

nector CN920

(2) Remove the four screws R attaching the Volume board.

(See Fig.17)

of the Volume board. (See Fig.17)

Fig.14

3.1.8 Removing the Power board (See Fig.15)

(1) Disconnect the Power cord connected to connector CN1

the Power board.

(2) Remove the four screws P attaching the Power board.

CN920

Fig.17

(3) Remove the two screws S attaching the Touch sensor

board. (See Fig.18)

Fig.15

3.1.9 Removing the FL board (See Fig.16) (1) Remove the three screws Q attaching the FL board.

CN1

Fig.16

Fig.18

CAUTION:

The touch sensor board sticks to a front lens.

3.1.11 Removing the Mic board and USB board (See Fig.19, 20 and 21)

(1) Remove the two screws T attaching the Slide door.

(See Fig.19)

Fig.19

(No.MB711<Rev.002>)1-11

(2) Remove the four screws U attaching the Slider arm.

(See Fig.20)

(3) Remove the four screws V attaching the Shaft holder.

(See Fig.20)

(4) Remove the six screws W attaching the Mic board and

USB board. (See Fig.21)

Fig.20

Fig.21

1-12 (No.MB711<Rev.002>)

3.2 DVD mechanism

3.2.1 Removing the traverse mechanism (See Fig.1 to 4)

(1) Remove the one screw A attaching the Front end board.

(See Fig.1)

(2) Remove the two screws B attaching the tramecha holder

from top side of DVD mechanism assembly. (See Fig.2)

(3) Remove the four screws C attaching the traverse mecha-

nism. (See Fig.3) (4) Solder the solder part of DVD pick up. (See Fig.4) (5) Disconnect the card wire from CN101

DVD module board. (See Fig. 1)

Caution:

• Solder the short land section on the DVD pickup before dis-

connecting the card wire from the connector on the DVD pickup. If the card wire is disconnected without attaching solders, the pickup may be destroyed by static electricity.

• When attaching the DVD pickup, be sure to remove solders

from the short land section after connecting the card wire to the connector on the DVD pickup.

and CN201 on the

Clamper base

CN101

Fig.1

CN201

Traverse mechanism assembly

DVD mechanism assembly

Fig.2

DVD mechanism assembly

Fig.3

Solder short land section

Fig.4

(No.MB711<Rev.002>)1-13

3.2.2 Removing the pickup assembly (See Fig.5 to 9)

(1) Remove the two rod springs pressing the guide shaft. (See

Fig.5)

(2) Remove the screw D and E attaching the spring holder.

(See Fig.6)

(3) Remove the read screw from traverse mechanism assem-

bly. (See Fig.7)

Caution:

When remove the lead screw, do not loss the middle

gear. (See Fig.8 and 9) (4) Remove the bar spring pressing the shaft. (See Fig.8) (5) Take out the pickup assembly from traverse mechanism

chassis by order. (See Fig.9)

(SHAFT)

(T.TABLE)

HOOK

(BAR SPRING)

Fig.8

ROD SPRING ROD SPRING

Fig.5

Spring holder

Fig.6

order 2

order 3

order 1

Fig.9

Middle gear

Lead screw

1-14 (No.MB711<Rev.002>)

Fig.7

3.2.3 Removing the feed motor assembly (See Fig.10)

(1) Remove the one screw F attaching the feed motor assem-

bly.

(2) Remove the feed motor wires from solder part of spindle

motor board.

Solder part

3.2.4 Removing the spindle motor assembly (See Fig.11)

(1) Remove the three screws G attaching the spindle motor

from spindle motor board.

Middle gear

Lead screw

Fig.10

Spindle motor

Fig.11

(No.MB711<Rev.002>)1-15

3.2.5 Removing the tray assembly (See Fig.12 & 13)

(1) Remove the two screws H attaching the clamper base.

(See Fig.12)

(2) Remove the one screw J attaching the shaft guide from

bottom side. (See Fig.12)

(3) Remove the two screws K attaching the shaft guide from

top side. (See Fig.13)

Caution:

When attach the tray assembly, boss of loading sub assembly should attach to guide of bottom side at tray assembly. (See Fig.13)

order 1

order 2

clamper base

Fig.13

[bottom side]

Fig.12

1-16 (No.MB711<Rev.002>)

SECTION 4

ADJUSTMENT

4.1 ATTENTION IN SERVICE OF DVD SECTION

1. When pickup, Flash ROM, DVD module board was changed, initialize EEPROM by all means.

2. When full initialization was executed, execute learning with a DVD test disc by all means. Test disc: VT-501, VT-502 Learning method: It is adjusted automatically by normal playback of a DVD disc.

4.2 TEST MODE

4.2.1 TO ENTER DVD TEST MODE

1. AC Power OFF.

2. Press and hold EJECT keys on the front panel. Then AC power ON while holding EJECT key for 2 seconds.

3. Mode select by MENU key. During version indication

Press >>| key : Normal initialize STOP key press for 4 seconds : Full initialize

CHECK mode : Refer 4.2.2 DVD CHECK MODES

4.2.2 DVD CHECK MODES

1. Press MENU key again to enter CHECK MODE.

(TEST MODE, MODE STATUS, CHECK MODE)

CHECK

(1)During CHECK mode, press '1' key on REMOTE CONTROL to START PLAYBACK.

PLAYBACK

(2)During CHECK mode, press '2' key on REMOTE CONTROL to perform SEARCH TNO+1.

WO B B L E

cccc jjjj

(3)During CHECK mode, press '3' key on REMOTE CONTROL to perform SEARCH TNO-1.

CHECK

(4)During CHECK mode, press '4' key on REMOTE CONTROL to light up CD_LD and display CD laser current.

CD L SR

cccc jjjj

(5)During CHECK mode, press '5' key on REMOTE CONTROL to light up DVD_LD and display DVD laser current.

DVD LSR

cccc jjjj

(6)During CHECK mode, press '6' key on REMOTE CONTROL to enter DVD x 2 JITTER MEASUREMENT MODE.

JIT X1

cccc jjjj

(7)During CHECK mode, press '7' key on REMOTE CONTROL to view DVD module EEPROM content in -1 address step.

EEP BWD

cccc jjjj

(8)During CHECK mode, press '8' key on REMOTE CONTROL to view DVD module EEPROM content in +1 address step.

EEP FWD

cccc jjjj

(No.MB711<Rev.002>)1-17

+ 38 hidden pages