Jvc KW-TC410 Service Manual

MA244200512

SERVICE MANUAL

CD/CASSETTE RECEIVER

KW-TC410,KW-TC411

Area suffix

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

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

No.MA244

2005/12

SPECIFICATION

AUDIO AMPLIFIER SECTION

Maximum Power Output Front 50 W per channel

Rear 50 W per channel

Continuous Power Output (RMS)

Load Impedance 4

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

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out Level/Impedance 2.0 V/20 k

Output Impedance 1 k

Other terminals CD changer, AUX (auxiliary) input jack

Frequency Range FM 87.5 MHz to 108.0 MHz

[FM Tuner] Usable Sensitivity 11.3 dBf (1.0

[AM Tuner] Sensitivity 20

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

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

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)

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

Grounding System: Negative ground

Allowable Operating Temperature 0

Dimensions (W

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

Front 19 W per channel into 4

total harmonic distortion.

Rear 19 W per channel into 4

total harmonic distortion.

Ω (4 Ω to 8 Ω allowance)

Mid ±12 dB

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

Ω load (full scale)

Ω

TUNER SECTION

AM 531 kHz to 1 602 kHz

µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

Capture Ratio 1.5 dB

µV/75 Ω)

µV

Selectivity 35 dB

CD PLAYER SECTION

Max. Bit Rate: 320 kbps

CASSETTE DECK SECTION

Dolby B NR ON 65 dB

Dolby B NR OFF 56 dB

Stereo Separation 40 dB

GENERAL

°C to +40°C

Set Size (approx.) 178 mm

Mass (approx.) 2.3 kg (excluding accessories)

× 100 mm × 177 mm

Ω, 40 Hz to 20 000 Hz at no more than 0.8%

Design and specification are subject to change without notice.

1-2 (No.MA244)

1.1 Safety Precautions

SECTION 1

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.

(No.MA244)1-3

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.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

(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.

Short-circuit point

(Soldering)

Flexible wire

1-4 (No.MA244)

Pickup

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.

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

WARNING LABEL

CAUTION : Visible and Invisible

CLASS 1 LASER PRODUCT

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

ADVARSEL : Synlig og usynlig laserstråling når maskinen er åben eller interlocken fejeler. Undgå direkte eksponering til stråling. (d)

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)

(No.MA244)1-5

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.

1-6 (No.MA244)

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 A attaching the front panel assembly. (See Figs.1 and 2.)

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

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

Front panel assembly

Fig.1

Front panel assembly

Fig.2

(No.MA244)1-7

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 B attaching 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 b on 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 D and screw E attaching the rear bracket.

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

Rear bracket

Fig.3

Cooling rubbers

Heat sink

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 F attaching the bottom chassis assembly.

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

Reference:

When attaching the bottom chassis assembly, set the projections c of the main body in the holes of the bottom chassis assembly.

Rear bracket

Bottom chassis assembly

Power amplifier IC

Fig.4

1-8 (No.MA244)

Fig.5

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 sette mechanism control board.

(2) Disconnect the wire from the connector CN402

sette mechanism control board.

(3) Remove the three screws G attaching 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 d of 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.

on the cas-

Cassette mechanism control board

Bottom chassis assembly

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 sette mechanism control board.

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

sette mechanism control board.

(3) Remove the four screws H attaching the cassette mecha-

nism assembly.

Reference:

After attaching the cassette mechanism control board, fix the wire with the wire clamp as before.

on the cas-

Wire clamp

Cassette mechanism control board

CN402

Wire clamp

CN403CN402

Fig.6

Cassette mechanism assembly

CN403

Bottom chassis assembly

Fig.7

(No.MA244)1-9

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

(2) Remove the screw J and 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 K attaching the middle chassis assembly.

(2) Disconnect the connector CN705

middle chassis assembly from the CD mechanism assembly in an upward direction.

on the func board.

of the main board on the

Middle chassis assembly

Main board

CN705

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

(2) Remove the four screws M attaching 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 e of the middle chassis in the holes of the main board.

on the main board.

CN321

Func board

Fig.8

Main board

CN323

1-10 (No.MA244)

Middle chassis

Fig.9

3.1.10 Removing the CD mechanism control board

(See Fig.10)

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

tom chassis assembly and middle chassis assembly. (1) From the inside of the top chassis assembly, disconnect

the card wire from the connector CN601 anism control board.

(2) Remove the five screws N attaching the CD mechanism

control board.

(3) Lift the CD mechanism control board to remove the joint f

and remove the joint g in the direction of the arrow.

on the CD mech-

3.1.11 Removing the CD mechanism assembly

(See Fig.11)

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

tom chassis assembly, middle chassis assembly and CD mechanism control board. (1) From the inside of the top chassis assembly, remove the

three screws P attaching the CD mechanism assembly.

(2) Take out the CD mechanism assembly from the top chas-

sis.

Reference:

When attaching the CD mechanism assembly, set the projections h of the top chassis assembly in the holes of the CD mechanism assembly.

CN601

CD mechanism control board

Top chassis assembly

Fig.10

h h

CD mechanism assembly

Top chassis assembly

Fig.11

(No.MA244)1-11

3.1.12 Removing the switch board (See Fig.12)

• Remove the front panel assembly.

(1) From the inside of front panel assembly, remove the thir-

teen screws Q attaching the switch board.

(2) Remove the volume knob from the front side of the front

panel assembly in the direction of the arrow while lifting the switch board little by little.

(3) Release the sections j while extending the lower section of

the front panel assembly in the direction of the arrow and take out the switch board.

Front panel assembly

Switch board

Front panel assembly

Volume knob

Fig.12

1-12 (No.MA244)

SECTION 4

ADJUSTMENT

4.1 Adjustment method

 Test instruments required for adjustment

(1) Digital oscilloscope (100MHz) (2) Frequency counter meter (3) Electric voltmeter (4) Wow & flutter meter (5) Test tapes

• VT724...........................For DOLBY level measurement

• VT739..............For playback frequency measurement

• VT712....For wow flutter & tape speed measurement

• VT703........................For head azimuth measurement

(6) Torque gauge............................Cassette type for CTG-N

(Mechanism adjustment) (7) Laser power meter(Reader:LP800102) (8) Prove for MD (Reader:LP8010-02) (9) Pre masterd disc (TGYS-1) (10)Test disc (JVC:CTS1000)

 Measuring conditions (Amplifier section)

• Power supply voltage.............. DC14.4V (11V to 16V allowance)

• Load impedance............ 4Ω (4Ω to 8Ω allowance)

• Line out level/Impedance..............1.0V/20k load (250 nWb/m)

 Standard volume position

Balance and Bass, Treble volume, Fader : Center (Indication "0") Loudness, Dolby NR, Sound, Cruise : Off Volume position is about 2V at speaker output with following conditions, Playback the test tape VT721.

AM mode 999kHz/62dB, INT/400Hz, 30%

modulation signal on receiving.

FM mono mode 97.9MHz/66dB, INT/400Hz, 22.5kHz

deviation pilot off mono

FM stereo mode 1kHz, 67.5kHz dev. pilot 7.5kHz dev.

Output level 0dB (1µV,50Ω/open terminal)

(No.MA244)1-13

 Information for using a car audio service jig

(1) We're advancing efforts to make our extension cords common for all car audio products.

Please use this type of extension cord as follows.

(2) As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly

after disassembly.

(3) Extension cord : EXTSH002-22P ( 22 pin extension cord ) For connection between the mechanism assembly and main board.

EXTXC004-20P ( 20 pin extension cord ) For connection between the front panel assembly and main board. EXTXC004-16P ( 16 pin extension cord ) For connection between the front panel assembly and main board. EXTXC004-16P ( 16 pin extension cord ) For connection between the front panel assembly and cassette mechanism assembly.

(4) Check for mechanism driving section such as motor ,etc.

 Disassembly method

(1) Remove the front panel assembly. (2) Remove the heat sink. (3) Remove the rear bracket. (4) Remove the bottom chassis assembly and middle chassis assembly. (5) Remove the main board. (6) Remove the CD mechanism assembly. (7) Reattach the heat sink with two screws to the main board. (Refer to Disassembly method.) (8) Connect the main board, front panel assembly, bottom chassis assembly and CD mechanism assembly with the extension

cords.

CAUTION :

Be sure to attach a heat sink on the power amplifier IC of a main board when supplying the power. If voltage is applied without attaching the heat sink, the power amplifier IC will be destroyed by heat.

CD mechanism assembly

Front panel assembly

EXTXC004-16P

Bottom chassis assembly

EXTXC004-20P

EXTXC004-16P

Cassette mechanism assembly

EXTSH002-22P

Main board

Heat sink

*The box etc. is used as a stand.

Func board

1-14 (No.MA244)

4.2 Service mode

Set up

Press POWER ON [SEL] [POWER] [CD EJECT] together more than 2 sec. UP,DW button to select SEL button to determination

DEL EPROM EEPROM clear

CD ERROR CD error history call change by FF button E1 to TOTAL

DEL CD CD error history clear

MAIN TEMP Templature indication of main board

VERSION Micon version indication

For next operation, service mode is stop automaticaly.

1. No input signal (key operation) more than 5 sec.

2. press other key without SEL,UP,DOWN.

3. ACC to OFF.

(No.MA244)1-15

5.1 Feed section

SECTION 5

TROUBLESHOOTING

Is the voltage present at both sides of the feed motor?

Is the voltage output at pin 17 and pin 18 of IC681?

Is the voltage input at pin 24 of IC681?

Is the voltage output at pin 40 of IC621?

Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 48, pin 51 and pin 64 of IC621?

Check the connections of CD8V power supply.

5.2 Focus section

YES

YES YES

YES

Check the feed motor.

Check the connections between the feed motor and IC681.

Is the power supply present at pin 10, pin 19 and pin 28 of IC681?

Check the connections of CD8V power supply.

Check the connections between IC681 and IC621.

Check IC621.

Check IC681.

When the lens is moving:

Does the S-search waveform appear at IC681 pin 13 and pin 14?

Is the voltage input at pin 1 and pin 2 of IC681?

Is the voltage output at pin 33 of IC621?

Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 48, pin 51 and pin 64 of IC621?

YES

Check the pickup and its connections.

Is the power supply present

YES YES

at pin 10, pin 19 and pin 28 of IC681?

Check the connections of CD8V power supply.

YES

Check the connections between IC681 and IC621.

YES

Check IC621.

Check IC681.

Check the connections of CD8V power supply.

1-16 (No.MA244)

5.3 Spindle section

Is the disk rotated?

Is the voltage output at pin 15 and pin 16 of IC681?

Is the voltage input at pin 26 of IC681?

Is the voltage output at pin 41 of IC621?

Is the power supply present at pin 6, pin 15, pin 25, pin 39, pin 43, pin 48, pin 51 and pin 64 of IC621?

YES

Does the RF signal appear at

YES

pin 19 of IC601?

YES

Check the spindle motor and its wiring.

Is the power supply present

YES YES

at pin 10, pin 19 and pin 28 of IC681?

Check the connections of CD8V power supply.

YES

Check the connections between IC681 and IC621.

YES

Check IC621.

Is the RF waveform at pin 19 of IC601 distorted?

NONO

Check the circuits in the vicinity of IC601 or the pickup.

Check IC681.

YES

Proceed to the Tracking section

Check the connections of CD8V power supply.

5.4 Tracking section

When the disc is rotated at first:

Approx. 1.2V

Is the tracking error signal output at pin 11 of IC601?

Check the circuits in IC601 or the vicinity of IC601.

Replace IC601 or repair the malfunction connection point

YES

Check the pickup and its connections.

Check IC601.

(No.MA244)1-17

5.5 Signal processing section

Is the sound output from both channels (L, R)?

No sound from either channel.

Compare the L-ch and R-ch to locate the defective point.

YES

Normal

YES

Is 9V present at pin 40 of IC151?

Is 9V present at pin 10 of IC901?

Check IC901 and its peripheral circuits.

Is the audio signal (including sampling

YES YES

output components) output to pins 1 and 7 of IC572 during playback?

Check IC572 and its peripheral circuits.

Check the connections

YES

between pin 40 of IC151 and pin 10 of IC901.

Is the audio signal output at pin 36 and pin 37 of IC151 during playback?

Check IC151 and its peripheral circuits.

YES

Check the power amplifier IC181.

1-18 (No.MA244)

5.6 Maintenance of laser pickup

(1) Cleaning the pick up lens

Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab.

(2) Life of the laser diode

When the life of the laser diode has expired, the following symptoms will appear.

• The level of RF output (EFM output: amplitude of eye pattern) will be low.

5.7 Replacement of laser pickup

Turn of the power switch and, disconnect the power cord.

Replace the pickup with a normal one. (Refer to "Removing the pickup unit" on the previous page.)

Is RF output

1.3 0.4Vp-p?

Replace it.

YES

(3) Semi-fixed resistor on the APC PC board

The semi-fixed resistor on the APC printed circuit board which is attached to the pickup is used to adjust the laser power.Since this adjustment should be performed to match the characteristics of the whole optical block, do not touch the semi-fixed resistor. If the laser power is lower than the specified value, the laser diode is almost worn out, and the laser pickup should be replaced. If the semi-fixed resistor is adjusted while the pickup is functioning normally, the laser pickup may be damaged due to excessive current.

Plug the power cord in, and turn the power on. At this time, check that the laser emits for about seconds and the objective lens moves up and down. Note: Do not observe the laser beam directly.

Play a disc.

Check the eye-pattern at pin 19 of IC601.

Finish.

(No.MA244)1-19

5.8 16 PIN CORD DIAGRAM

4 3

BL/WH

OR/WH

WH/BK

GN/BK

VI/BK

GY/BK

11 10

BK Black

Red

Blue

White

YL Yellow

Green

Violet

Gray

Orange

19 18

17 16 15

13 12

WH/BK

GY/BK

GN/BK

VI/BK

OR/WH

BL/WH

8 7 6

3 2 1

1-20 (No.MA244)

(No.MA244)1-21

Victor Company of Japan, Limited Mobile Entertainment Business Group Mobile Entertainment Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.MA244)

Printed in Japan

VPT

CD/CASSETTE RECEIVER

ALAT PENERIMA CD/KASET

KW-TC411/KW-TC410: KW-TC111/KW-TC110:

KW-TC411/KW-TC410/ KW-TC111/KW-TC110

ENGLISH

INDONESIA

For canceling the display demonstration, see page 8. Untuk membatalkan tampilan demonstrasi, lihat halaman 8.

INSTRUCTIONS

BUKU PETUNJUK

GET0315-001A

[UN]

Thank you for purchasing a JVC product.

Please read all instructions carefully before operation, to ensure your complete understanding and to

obtain the best possible performance from the unit.

ENGLISH

IMPORTANT FOR LASER PRODUCTS

1. CLASS 1 LASER PRODUCT

2. CAUTION: Do not open the top cover. There are no user serviceable parts inside the unit; leave

all servicing to qualified service personnel.

3. CAUTION: Visible and invisible laser radiation when open and interlock failed or defeated.

Avoid direct exposure to beam.

4. REPRODUCTION OF LABEL: CAUTION LABEL, PLACED OUTSIDE THE UNIT.

Warning:

If you need to operate the unit while driving, be sure to look ahead carefully or you may be involved in a traffic accident.

How to reset your unit

This will reset the microcomputer. Your

preset adjustments will also be erased.

Caution on volume setting:

Discs produce very little noise compared with other sources. Lower the volume before playing a disc to avoid damaging the speakers by the sudden increase of the output level.

How to forcibly eject a disc

If a disc cannot be recognized or cannot be ejected, eject the disc as follows.

• If this does not work, reset your unit.

• Be careful not to drop the disc when it ejects.

+ 53 hidden pages