TROUBLESHOOTING

If the unit fails to operate normally, check the following points to determine whether the problem can be corrected by the simple measures suggested. If it cannot, or if the problem is not listed in the SYMPTOM column, disconnect the unit's power cord and contact your authorized YAMAHA dealer or service center for assistance.

SYMPTOM

PROBABLE CAUSE

REMEDY

 

 

 

The player does not switch ON when the

The power cord is not connected or not completely

Securely connect the power cord.

POWER switch is pressed.

connected.

 

The disc tray does not close completely.

A foreign object is obstructing the tray.

Carefully check the disc tray and remove the foreign

 

 

object.

 

 

 

A disc number does not illuminate in the

The disc has been loaded upside down.

Load the disc correctly.

display.

 

 

The disc is damaged.

Check the disc carefully; replace it if necessary.

 

 

 

 

 

There is moisture on the laser pickup.

Wait 20 to 30 minutes after switching the unit ON

 

 

before trying to play a disc.

Play does not begin.

The disc has been loaded upside down.

Reload the disc with the label side up.

 

 

 

 

The disc is dirty.

Clean the disc.

 

 

 

Play is delayed, or begins at the wrong

The disc may be scratched or damaged.

Check the disc carefully; replace it if necessary.

place.

 

 

 

 

 

No sound.

Improper output cable connections.

Connect the cables properly. If the problem

 

 

persists, the cables may be defective.

 

Improper amplifier operation.

Set the amplifier controls to the correct input

 

 

selection.

 

 

 

Sound “skips”.

The player is being subjected to vibrations or

Relocate the player.

 

impacts.

 

 

 

 

 

The disc is dirty.

Clean the disc.

 

 

 

Sound “hums”.

Improper cable connections.

Securely connect the audio cables. If the problem

 

 

persists, the cables may be defective.

 

 

 

Noise from a nearby tuner.

The tuner is too close to the player.

Move the tuner and player farther apart.

 

 

 

Noise from inside of the disc tray.

The disc may be warped.

Replace the disc.

The remote control transmitter does not

The batteries of this remote control transmitter are

Replace the batteries with new ones.

work.

too weak.

 

 

 

 

 

Direct sunlight or lighting (of an inverter type of

Change position of the main unit.

 

fluorescent lamp etc.) is striking the remote control

 

 

sensor of the main unit.

 

SPECIFICATIONS

AUDIO SECTION

 

GENERAL

 

Frequency response

 

Power requirements

 

<CDC-845> .....................................

2 Hz – 20 kHz, ±0.3 dB

U.S.A. and Canada models

............................ 120V, 60 Hz

<CDC-745> .....................................

2 Hz – 20 kHz, ±0.5 dB

Power consumption ........................................................

20W

De-emphasis equalization .........................................

±0.5 dB

Dimensions (W x H x D) ......................

435 x 107.5 x 387 mm

Harmonic distortion+noise

 

Weight

(17-1/8” x 4-1/4” x 15-1/4”)

(with L.P.F.)

 

 

<CDC-845>.................................

Less than 0.002% (1 kHz)

<CDC-845>.................................................................

6.0 kg

<CDC-745>...............................

Less than 0.0025% (1 kHz)

<CDC-745>.................................................................

5.9 kg

S/N ratio

 

Accessories ..................................................

Connection cord

<CDC-845>...............................................................

118 dB

 

Remote control transmitter

<CDC-745>...............................................................

115 dB

 

Batteries (size AA, R6,UM-3)

Dynamic range .............................................................

100 dB

 

 

Wow & flutter ...................................................

Unmeasurable

 

 

Output voltage .................................................................

2.0V

Please note that all specifications are subject to change

Headphones output (–20 dB) ............

200 ± 40 mV/150 ohms

without notice.

 

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