Sharp QT-CD180 Maintenance, Specifications, Cleaning the lens and tape-handlingparts, General

Maintenance

■Cleaning the lens and tape-handling parts

●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 commer- cial head/pinch roller cleaner or isopropyl alcohol.

●After long use, the deck’s heads and capstan may become magne- tized, causing poor sound. Demagnetize these parts once every 30 hours of playing/recording by using a commercial tape head demag- netizer. Read the demagnetizer’s instructions carefully before use.

A

B	C D	E
A Laser pickup lens B Pinch roller		C Capstan
D Recording/Playback head	E Erase head

■Cleaning the cabinet

Periodically wipe the cabinet with a soft cloth and a diluted soap solution, then wipe with a dry cloth.

Caution:

Do not use chemically treated cleaning cloths or other chemicals.

■Condensation

Sudden temperature changes, storage or operation in an extremely hu- mid environment may cause condensation inside the cabinet (CD pickup, tape heads, etc.).

Condensation can cause the unit to malfunction.

If this happens, leave the power on with no disc (or cassette) in the unit until normal playback is possible (about 1 hour).

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 x 6]
Power consumption	11 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	3-1/8" (8 cm) full-range speaker x 2
Dimensions	Width; 14-6/8" (376 mm)
	Height; 5-7/8" (150 mm)
	Depth; 9" (230 mm)
Weight	5.5 lbs. (2.5 kg) without batteries

■ Compact disc player

Type	Compact disc
Signal readout	Non-contact, 3-beam semi-conductor laser pickup
Audio channels	2
Filter	8-time oversampling digital filter
D/A converter	1-bit D/A converter
Wow and flutter	Unmeasurable (less than 0.001% W. peak)

■ Radio

Frequency range FM; 87.5 - 108 MHz

AM; 530 - 1,720 kHz

■Tape recorder

Frequency response	50 - 14,000 Hz (Normal tape)
Signal/noise ratio	50 dB
Wow and flutter	0.25 % (WRMS)
Motor	DC 9 V electric governor
Bias system	AC bias
Erase system	Magnet erase

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