Important Service Notes (For U.s.a. Only); Specifications; General Specifications; Compact Disc Player - Sharp QT-CD180(BL) Service Manual

QT-CD180
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)

BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.
1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the chassis
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment
covers or shields, mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage
current in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor
paralleled by a 0.15µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).
* Connect the resistor connection to all exposed metal parts
having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
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

Compact disc
Type
Non-contact, 3-beam semi-conductor laser pickup
Signal readout
2
Audio channels
Filter 8-time oversampling digital filter
1-bit D/A converter
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 fiutter 0.25 % (WRMS)
Motor DC 9 V electric governor
Bias system AC bias
Erase system Magnet erase
Specifications for this model are subject to change without
prior notice.
TO EXPOSED
METAL PARTS
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.

SPECIFICATIONS

– 2 –
VTVM
AC SCALE
1.5k ohms
10W
0.15µF
TEST PROBE
CONNECT TO
KNOWN EARTH
GROUND