JVC MX-J50 Troubleshooting, Amplifier section - CA-MXJ50, General, Supplied accessories, Tuner

Models: MX-J50

1 28
Download 28 pages 54.69 Kb
Page 27
Image 27
Troubleshooting

Troubleshooting

?

?

?

If you are having a problem with your unit, check this list for a possible solution before calling for service.

If you cannot solve the problem from the hints given here, or the unit has been physically damaged, call a qualified person, such as your dealer, for service.

Symptom

Cause

Action

No sound is heard.

Connections are incorrect or loose.

Check all connections and make corrections. (See pages 6 to 8.)

Hard to listen to broadcasts because of noise.

The disc sound is discontinuous.

The disc tray does not open or close.

The disc does not play.

The cassette holders cannot be opened.

Antennas are disconnected.

The AM loop antenna is too close to the unit.

The FM antenna is not properly extended and positioned.

The disc is scratched or dirty.

The AC power cord is not plugged in.

Trays are locked.

The disc is placed upside down.

Power supply from the AC power cord has been cut off while the tape was running.

Reconnect the antennas correctly and securely.

Change the position and direction of the AM loop antenna.

Extend the FM antenna at the best position.

Clean or replace the disc. (See page 23.)

Plug the AC power cord.

Unlock the trays. (See page 15.)

Place the disc with the label side up.

Turn on the unit.

Impossible to record.

Small tabs on the back of the cassette are

 

removed.

Cover the holes with adhesive tape.

Operations are disabled.

The built-in microprocessor may

 

malfunction due to external electrical

 

interference.

Unplug the AC power cord and then plug it back in.

Unable to operate the unit from the remote

 

The path between the remote control unit

 

Remove the obstruction.

 

control unit.

 

 

and the remote sensor on the unit is

 

 

 

 

 

 

 

 

blocked.

 

 

 

 

 

 

 

The batteries are exhausted.

 

Replace the batteries.

 

 

 

 

 

 

 

 

 

Specifications

 

 

 

subject to change without notice.

 

 

 

 

 

Design and specifications are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amplifier section — CA-MXJ50

Output Power

75 watts per channel, min. RMS, driven into 6 ohms at 1 kHz with no more than 0.9% total harmonic distortion.

Audio input sensitivity/Impedance (at 1 kHz)

AUX: 400 mV/50 kohms

Digital output: CD OPTICAL DIGITAL OUTPUT Signal wave length: 660 nm

Output level: –21 to –15 dBm

Audio output level:

AUX: 270 mV

General

Power requirement:

AC 240 V , 50 Hz

Power consumption:

100 watts (at operation)

 

14 watts (on standby)

Dimensions (approx.):

265 x 315 x 341 mm (W/H/D)

 

(10 7/16 x 12 7/16 x 13 7/16 in.)

Mass (approx.):

9.5 kg (20.9 lbs)

Supplied accessories

See page 6.

Speakers/Impedance: 6 – 16 ohms

Speaker section — SP-MXJ57

 

Tuner

 

 

 

 

 

Type:

3-way bass-reflex type

FM tuning range:

87.50 – 108.00 MHz

Speaker units:

Woofer:

16 cm (6 5/16") cone x1

AM tuning range: 522 – 1,629 kHz

 

Midrange:

5 cm (2") cone x1

CD player

 

 

 

Tweeter:

2 cm (13/16") dome x1

 

 

Power handling capacity: 120 watts

 

CD Capacity:

3 CDs

 

 

 

Impedance:

6 ohms

 

Dynamic range:

85 dB

 

 

 

Frequency range:

40 Hz — 28,000 Hz

Signal-to-noise ratio: 90 dB

 

 

Sound pressure level:

86 dB/W•m

 

Wow and flutter:

Immeasurable

 

Dimensions (approx.):

215 x 315 x 273 mm (W/H/D)

Cassette deck

 

 

 

 

 

(8 1/2 x 12 7/16 x 10 3/4 in.)

Frequency response

 

 

Mass (approx.):

3.7 kg (8.2 lbs) each

Normal (type I):

50 – 14,000 Hz

 

 

 

CrO2 (type II):

50 – 14,000 Hz

 

 

 

Metal (type IV):

50 – 14,000 Hz (only for playback)

 

 

 

Wow and flutter

 

 

 

 

 

0.15% (WRMS)

– 24 –

Page 27
Image 27
JVC MX-J50 Troubleshooting, Amplifier section - CA-MXJ50, General, Supplied accessories, Tuner, CD player, Cassette deck