Maintenance; Specifications - Sharp QT-CD250 Operation Manual

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MAINTENANCE

Internal care
Do not touch the Laser pickup lens. If fingerprints
or dust accumulate on the pickup, clean it gently
with a dry cotton swab.
Dirty heads, capstan or pinch roller can cause
poor sound and tape jams. Clean these parts
with a cotton swab moistened with commercial
head/pinch roller cleaner or isopropyl alcohol.
After long use, the deck's heads and capstan
may become magnetized, causing poor sound.
Demagnetize these parts once every 30 hours
of playing/recording by using a commercial tape
head demagnetizer. Read the demagnetizer's
instructions carefully before use.

SPECIFICATIONS

SHARP reserves the right to make design and specification changes for product improvement without
prior notice.
General
Power source: AC 120 V, 60 Hz
DC 9 V "D" size (UM/SUM-1, R20
or HP-2) battery
DC 4.5 V "AA" size (UM/SUM-3,
R6 or HP-7) battery
memory
Power
consumption: 12 W
Output power: FTC; 2.0 W min. RMS per channel
into 4 ohms from 150 Hz to 20
kHz, with no more than 10 % total
harmonic distortion.
RMS; 2.3 W/CH
(DC operation, 10 % T.H.D.)
Speakers: 4" (10 cm) full-range speaker x 2
Output Headphones; 16-50 ohms
terminals: (recommended; 32 ohms)
Dimensions: Width; 15-3/4" (400 mm)
Height; 6-1/4" (158 mm)
Depth; 8-3/8" (212 mm)
Weight: 6.0 lbs. (2.7 kg) without batteries
External care
Periodically wipe the cabinet with a soft cloth and
a diluted soap solution, then wipe with a dry
cloth.
Do not use chemically treated cleaning cloths or
other chemicals.
Compact disc player
Type:
Signal
readout:
6
Audio
channels:
3 for backup
Quantization: 16-bit linear quantization
Filter:
D/A converter: 1-bit D/A converter
Wow and
flutter:
Radio
Frequency
range:
Tape recorder
Frequency
response:
Signal/noise
ratio:
Wow and
flutter:
Motor:
Bias system: AC bias
Erase
system:
12
QT-CD250(SEC) TINSE0040SJZZ
Compact disc
Non-contact, 3-beam semi-conduc-
tor laser pickup
2
8-times oversampling digital filter
Unmeasurable
(less than 0.001% W. peak)
FM; 87.5 - 108 MHz
AM; 530 - 1,720 kHz
50 - 14,000 Hz (Normal tape)
50 dB
0.25 % (WRMS)
DC 9 V electric governor
Magnet erase