JVC HX-Z30 Manuel utilisateur

SERVICE MANUAL

2003/10

COMPACT COMPONENT SYSTEM

MB04320039HX-Z30

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41

Area Suffix

UW ------ Brazil,Peru,Mexico

1-2 (No.MB043)

SPECIFICATION

Design & specifications are subject to change without notice.

Amplifier section-CA-HXZ30

Output Power (IEC 268-3) SUBWOOFERS 135 W per channel, min. RMS, driven into 6 Ωat 63 Hz with

no more than 10% total harmonic distortion.

MAIN SPEAKERS 55 W per channel, min. RMS, driven into 6 Ωat 1 kHz with

no more than 10% total harmonic distortion.

Audio input sensitivity/impedance

(Measured at 1 kHz, with tape recording

signal 300 mV)

AUX 300 mV/47 kΩ

Speakers/

impedance SUBWOOFERS 6 Ω- 16 Ω

MAIN SPEAKERS 6 Ω- 16 Ω

Tuner

FM tuning range 87.50 MHz - 108.00 MHz

AM tuning range At 9 kHz intervals 531 kHz - 1 710 kHz

At 10 kHz intervals 530 kHz - 1 710 kHz

CD player

Disc capacity 5 discs

Dynamic range 87 dB

Signal-to-noise ratio 90 dB

Wow and flutter Immeasurable

MP3 recording format MPEG 1/2 Audio Layer 3

Max. Bit rate 320 kbps

Cassette deck

Frequency response Normal (type I) 50 Hz - 14 000 Hz

Wow and flutter 0.15% (WRMS)

General

Power requirement AC 110 V/AC 127 V/AC 220 V/AC 230 V - AC 240 V

(adjustable with the voltage selector), 50 Hz / 60 Hz

Power consumption 210 W (in operation)

28 W (on standby)

Dimensions (approx.) 205 mm ×370 mm ×380.5 mm (W/H/D)

Mass (approx.) 10.5 kg

Speaker section-SP-HXZ30

Type 3-way 4-speaker Bass-Reflex Type Twin Hyper Power-Drive

Subwoofers and Front Twin Woofer

Speakers Subwoofer 20.0 cm (7-7/8 in.) cone ×1

Main woofer 13.5 cm (5-3/8 in.) cone ×2

Tweeter 5.0 cm (2 in.) cone ×1

Power Handling Capacity Subwoofer 190 W

Main Speaker 80 W

Impedance Subwoofer 6 Ω

Main Speaker 6 Ω

Frequency Range Subwoofer 30 Hz - 818 Hz

Main Speaker 75 Hz - 30 000 Hz

Sound Pressure Level Subwoofer 81 dB/W·m

Main Speaker 88 dB/W·m

Dimensions (W ×H ×D) 247 mm ×452 mm ×391 mm

(9-3/4 in.×17-13/16 in. ×15-7/16 in.)

Mass 10 kg (22.1 lbs) each

1-6 (No.MB043)

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the metal cover

(See Fig.1~3)

(1) Remove the six screws Aon the back of the body.

(2) Remove the screw Bon each side of the body.

(3) Remove the metal cover from the body by lifting the rear

part of the cover.

CAUTION:

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

Fig.1

Fig.2

Fig.3

Metal cover

(No.MB043)1-7

3.1.2 Removing the CD changer mechanism assembly

(See Fig.4, 5)

• Prior to performing the following procedure, remove the metal

cover.

(1) Disconnect the card wire from connector CN651 on the CD

servo control board on the right bottom of the CD changer

mechanism assembly.

(2) Remove the four screws Cattaching the CD changer

mechanism assembly on top of the body.

(3) Remove the CD changer mechanism assembly while lifting

the rear part.

CAUTION:

Do not damage the CD fitting when removing the CD changer

mechanism assembly.

Fig.4

Fig.5

CD changer mechanism assembly

CD servo control board

CN651

Front panel assemby

CD changer

mechanism assembly

1-8 (No.MB043)

3.1.3 Removing the front panel assembly

(See Fig.6~9)

• Prior to performing the following procedure, remove the metal

cover and the CD changer mechanism assembly.

(1) Disconnect the card wires from connector CN44 and

CN870 on the main board on the right side of the body.

(2) Disconnect the wire from connector CN701 on the bridge

board.

(3) Cut the band.

(4) Disconnect the wire from connector CN231 on the primary

board on the left side of the body and remove the band

fixing the wire.

(5) Disconnect the ground wire extending from phones board

from bottom chassis.

(6) Remove the three screws Dattaching the front panel

assembly at the bottom of the body.

(7) Release the two joints aon the lower left and right sides of

the front panel assembly using a screwdriver, and remove

the front panel assembly toward the front.

REFERENCE:

Front panel need to be tilt a little bit as release from bottom

chassis.

Fig.6

Fig.7

Fig.8

Fig.9

Front panel assembly

Bridge board

CN701

Main board

CN870

CN44

Front panel assembly

Primary board

CN231

Band

Ground wire

Band

Primary board

CN231 Front panel assembly

Front panel aeembly

(No.MB043)1-9

3.1.4 Removing the tuner pack assembly

(See Fig.10, 11)

• Prior to performing the following procedure, remove the metal

cover and the CD changer mechanism assembly.

(1) Disconnect the card wire from connector CN1 on the tuner

pack assembly on the right side of the body.

(2) Remove the two screws Eon the rear panel on the back of

the body.

Fig.10

Fig.11

Tuner pack assembly

CN1

ERear panel

1-10 (No.MB043)

3.1.5 Removing the rear panel

(See Fig.10, 12~16)

• Prior to performing the following procedure, remove the metal

cover and the CD changer mechanism assembly.

(1) Remove holding board by remove a plastic rivet and then

slide out the holding board as shown in fig. 12.

(2) Disconnect the fan wire extending from the fan assembly

from connector CN206 on the bridge board.

(3) Disconnect the card wire from connector CN1 on the tuner

pack.

(4) Remove four screws Ffrom rear panel.

(5) Release joints bwhich on right bottom and left bottom of

rear panel. The joint can be release by pull outward the

side of rear panel.

REFERENCE:

Fan assembly and tuner pack will come off with rear panel.

Fig.12

Fig.13

Fig.14

Fig.15

Fig.16

Plastic rivet

Holding board

Rear panel

Fan assembly Bridge board

CN206

Rear panel

(No.MB043)1-11

3.1.6 Rmoving the fan assembly

(See Fig.17, 18)

• Prior to performing the following procedure, remove the metal

cover, the CD changer mechanism assembly and the rear

panel.

(1) Cut the band holding the fan wire.

(2) Remove two screws Gon the rear panel.

(3) Rotate fan assembly in clockwise direction to release fan

assembly from rear panel (joints c).

Fig.17

Fig.18

3.1.7 Removing the main board

(See Fig.19)

• Prior to performing the following procedure, remove the metal

cover, the CD changer mechanism assembly and the rear

panel.

(1) Cut off the band.

(2) Disconnect the card wires from connector CN44 and

CN870 on the main board.

(3) Remove the screw H attaching the main board.

(4) Disconnect connector CN217 and CN311 on the main

board outward and release from the base chassis (joint d)

upward.

Fig.19

Rear panel

cFan assembly

Band

CN870

CN44

CN311

Main board

CN217

Band

1-12 (No.MB043)

3.1.8 .Removing the bridge board / regulator board / heat sink

(See Fig.20~23)

• Prior to performing the following procedure, remove the metal

cover, the CD changer mechanism assembly, the rear panel

and main board.

(1) Disconnect the wire from connector CN212, CN213 and

CN214 on the primary board respectively and remove the

band attaching the wires.

(2) Disconnect the wire from connector CN701 on the bridge

board.

(3) Disconnect the ground wire extending from the bridge

board from bottom chassis.

(4) Remove the two screws Iattaching the heat sink bracket

and move the heat sink in the direction of the arrow to

release from the base chassis. The bridge board and the

regulator board come off with the heat sink.

(5) Remove the two screws Jattaching the heat sink bracket.

(6) Remove the two screws M, detach bridge board from

regulator board by disconnect connector CN205.

(7) Remove the two screws Kand two screws Lto detach

regulator board from heat sink.

CAUTION:

As assembly back the regulator board and bridge board to

heat sink.

Regulator board must be assembly to heat sink first and

screws Kand L must be screwed before bridge board attach

to regulator board.

Fig.20

Fig.21

Fig.22

Fig.23

Band

CN212

Primary board

CN213

CN214

CN701

Bridge board

Ground wire

Regulator board

Heat sink

IHeat sink bracket

Heat sink

Bridge board

Regulator board

Heat sink bracket

Heat sink

Regulator board

Bridge board

CN215

CN205

(No.MB043)1-13

3.1.9 Removing the power transformer assembly

(See Fig 24, 25)

• Prior to performing the following procedure, remove the metal

cover, the CD changer mechanism assembly, the rear panel,

the main board and the bridge board / regulator board.

(1) Remove the screw N attaching the primary board.

(2) Disconnect the wire from connector CN231 on the primary

board.

(3) Remove the four screws Oattaching the power

transformer assembly.

(4) Detach the cord stopper from the base chassis upward.

REFERENCE:

When disconnecting the power cord from connector CN250 on

the primary board, remove the fixing band.

Fig.24

Fig.25

Power transformer

assembly

Primary board

CN231

CN250

Cord stopper

FIxing band

Power transformer

assembly

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