Yamaha K-903 - Manual (Page 17)

17
ENGLISH
FRANÇAIS
DEUTSCH
SVENSKA
ITALIANO
ESPAÑOL
DUTCH
Cause
÷ Normally-recorded tape is played back in
Dolby NR.
÷ Heads are dirty.
÷ Heads are magnetized.
÷ Basic levels are different for different
cassette decks.
÷ The batteries are exhausted.
÷ The remote control transmitter is
operated from an incorrect distance or
angle.
÷ The remote control sensor is lighted
strongly.
Cure
÷ Play back in OFF position.
÷ Clean heads and carry out
demagnetization with head
demagnetizer.
÷ This is not a fault.
÷ Replace batteries.
÷ Operate it from less than 7 meters
(about 23 ft.) and 30°.
÷ Place the unit away from the strong
light.
Fault
Playback sound is muffled and high
frequencies are inaudible.
When playing back tapes recorded on
other decks, meter deflections are
greater (smaller) than when recorded.
The remote control transmitter cannot
be operated.
Type ..................................... Auto reverse 4-track, 2-channel
recording and playback stereo double cassette deck
Motors ......................................... DC servo motor x 2 (main)
Heads .................... Recording/playback: Hard Permalloy x 1
Erase: Double-gap Ferrite x 1
Playback: Hard Permalloy x 1
Rapid Transport .......................................... 100 sec. (C-60)
Wow and Flutter
WRMS ...................................................................... 0.08%
W.Peak ................................................................... ±0.15%
Signal-to-Noise Ratio
(Dolby NR off) ........................................................... 58 dB
(Dolby B NR on) ....................................................... 66 dB
(Dolby C NR on) ....................................................... 74 dB
Frequency Response (–20 dB)
Type I/Normal .............................. 20 ~ 16,000 Hz ±3 dB
Type II/High (CrO
2 ) .................... 20 ~ 17,000 Hz ±3 dB
Type IV/Metal .............................. 20 ~ 19,000 Hz ±3 dB
Harmonic Distortion ..................................... less than 1.0%
Input Sensitivity/Impedance
Line ...................................................... 100 mV/43 k-ohms
Output Level
Line ..................................................... 570 mV/1.4 k-ohms
Phones ..................................................... 0.25 mV/8 ohms
Channel Separation (1 kHz) ...................... more than 40 dB
Crosstalk (125 Hz) ..................................... more than 55 dB
SPECIFICATIONS
GENERAL
Power Supply .................................................. 120 V, 60 Hz
Power Consumption ............................ 11 W/7 W (Standby)
Dimensions (W x H x D) ...................... 435 x 146 x 279 mm
(17-1/8" x 5-3/4" x 11")
Weight ........................................................... 5.0 kg (11 lbs.)
Accessory
Audio cord ................................................................ 1 pair
* Specifications subject to change without notice.