Maintenance, Cloaningthe cabinet, Cleaning discs – Philips FW48-37 User Manual
Page 21: Cleaning the heads and the tape paths, Demagnetizing the heads, Specifications, Amplifier, Tuner, Cd player, Cassehedeck
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MAINTENANCE
SPECIFICATIONS
Maintenance
Cloaningthe Cabinet
• Use a soft cloth slightly moistened with a mild
detergent solution. Do not use a solution containing
alcohol, spirits, ammonia or abrasives.
Cleaning Discs
• When a disc becomes dirty, clean it
with a cleaning cloth. Wipe the disc
from the center out.
• Do not use solvents such as
benzine, thinner, commercially
available cleaners, or anti-static
spray intended for analog records.
Cleaning the Heads and the Tape Paths
• To ensure good recording and playback quality, clean
the heads
(
a
)
and (|), the capstan ©, and pressure
roller® after every 50 hours of tape operation.
• Use a cotton swab slightly moistened with cleaning
fluid or alcohol.
Demagnetizing the heads
• Use a demagnetizing cassette available at your dealer.
Specifications
AMPLIFIER
Output power........................................................2 X 4 W RMS
Power band width............................... 63 -15000 Hz (- 3 dB)
Frequency response........................... 63 -15000 Hz (- 3 dB)
Signal-to-noise ratio....................................................>75 dBA
Stereo separation.............................................> 48 dB (1 kHz)
Input sensitivity
Auxiliary.......................................................................... 350 mV
Outputs
Speakers......................................................................... > 3 Й
Headphones.................................................. 32 -1000
TUNER
FM wave range..................................................87.5 -108 MHz
AM wave range.................................................. 530 -1700 kHz
Sensitivity at 300 ii, 26 dB S/N ratio,
FMmono........................................................................ 13.8 |iV
46 dB signal-to-noise ratio, FM Stereo.................... 309 pV
FM Frequency response.................. 63 -12500 Hz (±3 dB)
Signal-to-noise ratio....................................................>50 dBA
Total Hamnonic Distortion.........................................................< 3%
CD PLAYER
Frequency range............................... 20 - 20000 Hz (±3 dB)
Signal-to-noise.............................................................. >85 dBA
Channel separation.............................................. :...... > 40 dB
Total harmonic distortion............................................ < 60 dB
CASSEHEDECK
Frequency range
Normal tape (type I)................... 80 -12500 Hz (±5 dB)
Signal-to-noise ratio
Normal tape (type I).............................................. > 48 dBA
Wow and flutter....................................................... < 0.4% DIN
OUTPUT FOR ACTIVE SUBWOOFER
(optionaU
Output at maximum volume...................... 500 mV (±2 dB)
Output impedance......................................................S2000i2
Frequency response.......................... 20 - 20000 Hz (±3 dB)
MAIN UNIT
Material/finish.................................... Metal and polystyrene
Dimensions (w x h x d)...................... 265 x 310 x 308 (mm)
Weight.........................................................................6 kg approx.
SPEAKER BOX
Dimensions (w x h x d)...................... 180 x 310 x 160 (mm)
Weight....................... ;............................................ 1.5 kg approx.
Speaker driver............................................. 4 inches full range
Subject to modification
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