Denon DN-780R User Manual download pdf (Page 13)

ENGLISH

TROUBLESHOOTING

Check the following before you draw the conclusion that your Stereo Cassette Deck is malfunctioning.

1. Are all the connections correct?

2. Are all system components being operated correctly in accordance with the operating instructions?

3. Are the speakers and amplifier/receiver functioning correctly?

If the tape deck still does not function properly, check the symptom against the list below. If the symptom does

not correspond to the check list, please contact your DENON dealer.

Problem Cause Remedy

Tape does not run. • Power cord is disconnected.

• Tape is loose.

• Cassette is not loaded properly.

• Defective cassette.

• Check power cord.

• Tighten tape with a pencil, etc.

• Load cassette properly.

• Replace cassette.

Tape is not recorded when Rec/Rec

Mute (4) button is pressed.

• No cassette is loaded.

• Erase prevention tabs are broken

off.

• Load cassette.

• Cover holes with adhesive tape.

Sound is warbled or distorted. • Heads, capstan or pinch roller are

dirty.

• Tape is wound too tight.

• Recording input level is too high.

• Tape is worn out and has “drop-

outs”.

• Clean them.

• Fast forward or rewind to loosen

tape winding.

• Adjust recording input level.

• Replace tape.

Excessive noise. • Tape is worn.

• Heads, capstan or pinch roller are

dirty.

• Heads are magnetized.

• Recording input level is too low.

• Replace tape.

• Clean them.

• Demagnetize heads.

• Adjust recording input level.

High frequency range (treble) is

emphasized.

• DOLBY NR switch is set

improperly.

• Set DOLBY NR switch properly.

The cassette tape cannot be

removed.

• If the POWER switch is turned

off either during recording or

playback and the unit is stopped,

there may be cases when the

cassette cannot be removed,

even if the Eject ( 5 ) button is

pressed.

• Turn the POWER switch ON ( ¢ )

again, and then press the Stop

( 2 ) button.

• Now, press the Eject ( 5 ) button

to remove the cassette tape.

SPECIFICATIONS

Type Vertical tape loading; 4-track 2-channel

stereo double cassette deck

Heads Recording/playback head (hard parmalloy) x 2

Erase head (Double-gap ferrite) x 2

Motors Capstan (DC servo motor) x 2

Real (DC motor) x 2

Tape Speed 4.8 cm/sec.

Variable (PLAY) Approx. ±12%

Fast Forward,

Rewind Time Approx. 110 sec. with a C-60 cassette

Recording Bias Approx. 105 kHz

Overall S/N Ratio

(at 3% THD level) Dolby C NR on: more than 74 dB (CCIR/ARM)

Overall Frequency

Response 20 ~ 18,000 Hz ±3 dB (at –20 dB, Metal tape)

Channel Separation More than 40 dB (at 1 kHz)

Wow & Flutter 0.06% WRMS, ±0.14% w. peak

Input Sensitive

LINE 50 mV (input level maximum)

Input impedance : 240 kΩ/kohms unbalanced

MIC 0.775mV (mic level maximum)

Output Level

LINE 775 mV (0 dB)

(with 47 kΩ/kohms load, recorded level of 200 pwb/mm)

PHONES 7 mW output level at maximum (33 Ω/ohms)

Power Supply U.S.A.,Canada and Taiwan R.O.C. models : 120 V AC±10%, 60Hz

Europian models : 230 V AC±10%, 50Hz

Power Consumption 33W

Dimensions 483 (W) x 134 (H) x 275 (D) mm

Mass 6.5 kg (14 lbs 5 oz)

Installation 19-inch rack mountable (3U)

For improvement purposes, specifications and design are subject to change without notice.

Dolby noise reduction and HX Pro headroom extension manufactured under license from Dolby Laboratories

Licensing Corporation. HX Pro originated by Bang & Olufsen.

“DOLBY”, the double-D symbol and “HX PRO” are trademarks of Dolby Laboratories Licensing Corporation.

High frequency range (treble) is

lost.

• Heads are dirty.

• Tape is worn.

• Clean them.

• Replace tape.

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Denon DN-780R User Manual Page 13

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