JVC KW-TC410 Bedienungsanleitung

SERVICE MANUAL

2005/12

CD/CASSETTE RECEIVER

MA244200512

KW-TC410,KW-TC411

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

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Area suffix

UN --------------------- Indonesia

1-2 (No.MA244)

SPECIFICATION

Design and specification are subject to change without notice.

AUDIO AMPLIFIER SECTION

Maximum Power Output Front 50 W per channel

Rear 50 W per channel

Continuous Power Output

(RMS)

Front 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8%

total harmonic distortion.

Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8%

total harmonic distortion.

Load Impedance 4 Ω(4 Ωto 8 Ωallowance)

Equalizer Control Range Low ±12 dB (60 Hz, 80 Hz, 100 Hz, 120 Hz)

Mid ±12 dB

High ±12 dB (8 kHz, 10 kHz, 12 kHz, 15 kHz)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out Level/Impedance 2.0 V/20 kΩload (full scale)

Output Impedance 1 kΩ

Other terminals CD changer, AUX (auxiliary) input jack

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM 531 kHz to 1 602 kHz

[FM Tuner] Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

Capture Ratio 1.5 dB

[AM Tuner] Sensitivity 20 µV

Selectivity 35 dB

CD PLAYER SECTION

Type Compact disc player

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response 5 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

MP3 Decoding Format (KW-TC411/KW-TC410 only) MPEG1/2 Audio Layer 3

Max. Bit Rate: 320 kbps

WMA (Windows Media® Audio) Decoding Format (KW-TC411/KW-TC410 only) Max. Bit Rate: 192 kbps

CASSETTE DECK SECTION

Wow and Flutter 0.1 % (WRMS)

Fast-Wind Time 100 sec. (C-60)

Frequency Response 30 Hz to 16 000 Hz (Normal tape)

Signal-to-Noise Ratio

(Normal tape)

Dolby B NR ON 65 dB

Dolby B NR OFF 56 dB

Stereo Separation 40 dB

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System: Negative ground

Allowable Operating Temperature 0°C to +40°C

Dimensions (W ×H ×D) Installation Size (approx.) 178 mm ×100 mm ×158 mm

Set Size (approx.) 178 mm ×100 mm ×177 mm

Mass (approx.) 2.3 kg (excluding accessories)

(No.MA244)1-3

SECTION 1

PRECAUTIONS

1.1 Safety Precautions

!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.

!Please use enough caution not to see the beam directly or touch it in case of an

adjustment or operation check.

1-4 (No.MA244)

1.2 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.

1.2.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.

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.

(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.

1.3 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.

1.4 Attention when traverse unit is decomposed

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

• Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit.

(If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.)

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

(caption)

Anti-static wrist strap

Conductive material

(conductive sheet) or iron plate

Pickup

Short-circuit point

(Soldering)

Flexible wire

(No.MA244)1-5

1.5 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 CD,MD and DVD 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 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.

REPRODUCTION AND POSITION OF LABELS

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

WARNING LABEL

CAUTION : Visible and Invisible

laser radiation when open and

interlock failed or defeated.

AVOID DIRECT EXPOSURE TO

BEAM. (e)

VARNING : Synlig och

osynling laserstrålning när

den öppnas och spärren är

urkopplad. Betrakta ej

strålen. (s)

VARO : Avattaessa ja suojalukitus

ohitettuna tai viallisena olet alttiina

näkyvälle ja näkymättömälle

lasersäteilylle. Vältä säteen

kohdistumista suoraan itseesi. (f)

ADVARSEL : Synlig og usynlig

laserstråling når maskinen er

åben eller interlocken fejeler.

Undgå direkte eksponering til

stråling. (d)

CLASS 1

LASER PRODUCT

1-6 (No.MA244)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 CD mechanism and cassette mechanism

For the CD mechanism, please refer the mechanism manual TN2001-1013 No.MY001.

For the Cassette mechanism, please refer the mechanism manual CDS-802JE3 No.MY002.

(No.MA244)1-7

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the front panel assembly

(See Figs.1 and 2)

(1) From the both side of the main body, remove the two

screws Aattaching the front panel assembly. (See Figs.1

and 2.)

(2) Release the four joints aand remove the front panel as-

sembly in the direction of the arrow. (See Figs.1 and 2.)

Fig.1

Fig.2

Front panel assembly

1-8 (No.MA244)

3.1.2 Removing the heat sink

(See Figs.3 and 4)

(1) From the back side of the main body, remove the six

screws Battaching the heat sink. (See Fig.3.)

(2) Remove the heat sink from the main body.

Note:

• Before attaching the heat sink, attach the cooling rubbers on

the power amplifier IC. (See Fig.4)

• When attaching the heat sink, set the projections bon the

rear bracket in the holes of the heat sink. (See Fig.3.)

3.1.3 Removing the rear bracket

(See Fig.4)

• Remove the heat sink.

(1) From the back side of the main body, remove the six

screws C, two screws Dand screw Eattaching the rear

bracket.

(2) Remove the rear bracket from the main body.

Fig.3

Fig.4

3.1.4 Removing the bottom chassis assembly

(See Fig.5)

• Remove the front panel assembly, heat sink and rear bracket.

(1) From the bottom side of the main body, remove the four

screws Fattaching the bottom chassis assembly.

(2) Take out the bottom chassis assembly from the main body.

Reference:

When attaching the bottom chassis assembly, set the projec-

tions cof the main body in the holes of the bottom chassis as-

sembly.

Fig.5

Rear bracket Heat sink

Rear bracket

Cooling rubbers

Power amplifier IC

Bottom chassis assembly

(No.MA244)1-9

3.1.5 Removing the cassette mechanism control board

(See Fig.6)

• Remove the front panel assembly, heat sink, rear bracket and

bottom chassis assembly.

(1) From the inside of the bottom chassis assembly, discon-

nect the card wire from the connector CN403 on the cas-

sette mechanism control board.

(2) Disconnect the wire from the connector CN402 on the cas-

sette mechanism control board.

(3) Remove the three screws Gattaching the cassette mech-

anism control board.

(4) Take out the cassette mechanism control board from the

bottom chassis assembly.

Reference:

• When attaching the cassette mechanism control board, set

the projections dof the bottom chassis assembly in the

holes of the cassette mechanism control board.

• After attaching the cassette mechanism control board, fix

the wire with the wire clamp as before.

Fig.6

3.1.6 Removing the cassette mechanism assembly

(See Fig.7)

• Remove the front panel assembly, heat sink, rear bracket and

bottom chassis assembly.

(1) From the inside of the bottom chassis assembly, discon-

nect the card wire from the connector CN403 on the cas-

sette mechanism control board.

(2) Disconnect the wire from the connector CN402 on the cas-

sette mechanism control board.

(3) Remove the four screws Hattaching the cassette mecha-

nism assembly.

Reference:

After attaching the cassette mechanism control board, fix the

wire with the wire clamp as before.

Fig.7

CN403CN402

Wire clamp

Cassette mechanism control board

Bottom chassis assembly

CN403

CN402

Wire clamp

Cassette mechanism control board

Bottom chassis assembly

HCassette mechanism assembly

1-10 (No.MA244)

3.1.7 Removing the func board

(See Fig.8)

• Remove the front panel assembly, heat sink, rear bracket and

bottom chassis assembly.

(1) From the bottom side of the main body, disconnect the wire

from the connector CN321 on the func board.

(2) Remove the screw Jand take out the func board from the

main body.

3.1.8 Removing the middle chassis assembly

(See Fig.8)

• Remove the front panel assembly, heat sink, rear bracket and

bottom chassis assembly.

(1) From the bottom side of the main body, remove the four

screws Kattaching the middle chassis assembly.

(2) Disconnect the connector CN705 of the main board on the

middle chassis assembly from the CD mechanism assem-

bly in an upward direction.

Fig.8

3.1.9 Removing the main board

(See Fig.9)

• Remove the front panel assembly, heat sink, rear bracket, bot-

tom chassis assembly and middle chassis assembly.

(1) From the top side of the middle chassis assembly, discon-

nect the wire from the connector CN323 on the main board.

(2) Remove the four screws Mattaching the main board on the

middle chassis.

(3) Remove the main board from the middle chassis.

Reference:

When attaching the main board, set the projections eof the

middle chassis in the holes of the main board.

Fig.9

Main board

Func board

CN705

CN321

Middle chassis assembly

Main board

Middle chassis

CN323

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