Troubleshooting; Specifications - Denon DN-T645 Instrucciones De Operación

ENGLISH

TROUBLESHOOTING

22
Make sure of the followings before you consider as any malfunctions :
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
Disc holder does not open/close. • Power operation switch is not
When a disc is loaded, " TOC Error" • Disc is not properly loaded.
or " No Disc" is displayed.
When the play/pause ( 1 3 ) button • Disc is dirty or scratched.
is pressed, playback does not start.
There is no sound, or it is distorted. • Output cord is not properly
• Amplifier
A specific section of the disc will • Disc is dirty or scratched.
not play.
Programmed playback does not • Programmed playback operation
work.
Tape does not run. • Power cord is disconnected.
• Tape is loose.
• Cassette is not loaded properly.
• Defective cassette.
Tape is not recorded when rec/rec • No cassette is loaded.
mute ( 4 ) button is pressed. • Erase prevention tabs are broken
Sound is warbled or distorted. • Heads, capstan or pinch roller are
• Tape is wound too tight.
• Recording input level is too high.
• Tape is worn out and has
Excessive noise. • Tape is worn.
• Heads, capstan or pinch roller are
• Heads are magnetized.
• Recording input level is too low.
High frequency range (treble) is • DOLBY
emphasized.
High frequency range (treble) is • Heads are dirty.
lost. • Tape is worn.
The cassette tape cannot be • If the power operation switch is
removed.
20
Cause
• Turn the power operation switch
turned on. on.
• Reload the disc.
• Clean the disc.
• Connect the output cord properly.
connected.
adjustment is • Readjust the amplifier.
inappropriate.
• Clean the disc.
• Restart programmed playback.
has been performed improperly.
• Check power cord.
• Tighten tape with a pencil, etc..
• Load cassette properly.
• Replace cassette.
• Load cassette.
• Cover holes with adhesive tape.
off.
• Clean them.
dirty.
• Fast forward or rewind to loosen
tape winding.
• Adjust recording input level.
• Replace tape.
" dropouts" .
• Replace tape.
• Clean them.
dirty.
• Demagnetize heads.
• Adjust recording input level.
NR switch is set • Set DOLBY NR switch properly.
improperly.
• Clean them.
• Replace tape.
• Turn the power operation switch
¢
turned off either during recording ON ( ) again, and then press the
2
or playback and the unit is stop ( ) button.
stopped, there may be cases • Now, press the eject (
when the cassette cannot be remove the cassette tape.
removed, even if the eject ( 5 )
button is pressed.

SPECIFICATIONS

23
2 CD SECTION
Type :
Audio Channel :
Quantization :
Sampling Frequency :
Oversampling Ratio :
Frequency Response :
Total Harmonic Distortion :
Remedy
Signal-to-noise Ratio :
Dynamic Range :
Channel Separation :
Unbalanced Output :
Output Level :
Load Impedance :
Balanced Output :
Output Level (Stereo) :
Load Impedance :
Output Level (Mono) :
Digital Output :
Signal Format :
Variable Pitch Control :
Frame Search Accuracy :
Discs :
CD Mechanism Service Life :
2 CASSETTE DECK SECTION
Type :
Heads :
Motors :
Tape speed :
Variable (PLAY) :
Fast Forward, Rewind Time :
Recording Bias :
Overall S/N Ratio (at 3 % THD level) : 60 dB (Dolby B NR on, CCIR/ARM)
Wow & Flutter :
Unbalanced Inputs Line :
Inputs Sensitive :
Inputs Impedance :
Balanced Inputs Line :
Inputs Sensitive :
Inputs Impedance :
MIC Input :
Inputs Sensitive :
Unbalanced Outputs Line :
Outputs Level :
Balanced Outputs Line :
Outputs Level (Stereo) :
Outputs Level (Mono) :
2 REMOTE
2 GENERAL
Headphone Output :
Outputs Level :
Load Impedance :
Power supply :
Power Consumption :
Installation :
Mass :
5 ) button to 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
Corporation.
Single-mechanism compact disc player
2 channel stereo
16-bit Liner
44.1 kHz at Normal Pitch
8 times
20 to 20,000 Hz
0.009 %
98 dB
86 dB
70 dB
RCA jack
2.0 V at 0 dB disc
10 kΩ / kohms or more
3-Pin XLR
+18 dBu at 0 dB disc
600 Ω / ohms
L channel : +18 dBu, R channel : – 10 dBu
RCA jack
SPDIF or IEC-958 Type II
±12 % max.
1/75 second
Standard compact discs (12 cm and 8 cm)
1000 hours (continuous playback)
4-track, 2-channel stereo cassette deck
Recording/playback head (hard parmalloy) x 1
Erase head (Double-gap ferrite) x 1
DC servo motor x 2
4.8 cm / sec. (FIX)
Approx. ±12 % or more
Approx. 110 sec. (C-60)
Approx. 105 kHz
0.06 % WRMS (JIS method)
RCA jack
50 mV
47 kΩ / kohms
3-Pin XLR
90 mV
120 kΩ / kohms
1/4" TRS Type
0.775 mV (mic level maximum)
RCA jack
775 mV (0 dB) (with 47 kΩ / kohms load, 200 nWb / m)
3-Pin XLR
+4 dBu (0 dB) (with 600 Ω / ohms load, 200 nWb / m)
L channel : +4 dBu, R channel : – 10 dBu
9P D-Sub (Serial port)
Wired Remote Control Connection (Stereo mini jack)
Remote Control Sensor
25P D-Sub (Parallel) (DN-T645 only)
Stereo (CD, TAPE/MIX)
15 mW
33 Ω / ohms
120 V AC ±10 %, 60 Hz (for U.S.A. & Canada models)
230 V AC ±10 %, 50 Hz (for European & U.K. models)
25 W
19-inch rack mountable (3U)
6.7 kg
and " HX PRO" are trademarks of Dolby Laboratories Licensing