Sharp SG-450H Service Manual

= Service Manual
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Aute Program Search System
SG-450
DU [eausvsvsrew]
* 'Dolby' and the 'Double-D' symbols are trade mark of
Dolby Laboratories.
* Manufactured under licence from Dolby Laboratories.
MODEL
SG-450H
SG-450HB
In the interests of user-safety the set should be
restored to its original condition and only parts
N
SPECIFICATIONS identical to those specified be used.
GENERAL Distortion: ; 0.5%
Circuit: Receiver (LW/MW/SW/FM) 4-band 19kHz rejection: 40dB
superheterodyne stereo tuner-amplifier 38kHz rejection: 40dB
with FM multiplex circuit with cas- AM SECTIOM
a and record player Frequency range: Wii sae 150 ~ 370kHz
MW....... 520 ~ 1620kH
Power source: AC 110/220/240V, 5OHz swoo aS ocak
Power consumption: 200W Sensitivity: Wes ese-g.s%s 200n.V/m
Semiconductors: 13-Integrated Circuit MW....... 250uV/m
1-FET, 38-Transistors, 75-Diodes SW....... 63uV
7-LED TE peiection:
: eh jection: 50dB (at 600kHz)
wah ice x 174(H) x 395(D) mm Image rejection: 46dB (at 1400kHz)
AUDIO SECTION
Music power output: 2 x 33W/4ohms Both channels driver
Continuous power output:
2 x 25W/4ohms Both channels driver
30 ~ 20,000Hz
48dB (1kHz)
Bass + 10dB (100Hz)
Treble + 10dB (10kHz)
Input sensitivity and Input impedance:
Microphone . 1mV/10kohms
REC/PB. ... 300mV/47kohms
Output level and output impedance:
Frequency response:
Channel separation:
Tone control:
Speaker. ... 4ohms
Headphones . 8o0hms
REC/PB. ... 30mV/100kohms
FM SECTION
Frequency coverage: 87.6 ~ 108MHz
Usable sensitivity: 1.88uV
(40kHz deviation, S/N = 26dB)
S/N ratio: 60dB
Frequency response: 30Hz to 15kHz
IF rejection: 80dB
Image rejection: 50dB
Selectivity: 40dB (300kHz)
Capture ratio: 1.5dB
FM STEREO SECTION
Stereo Separation: 40dB
TAPE RECORDER SECTION
Type: 4-track 2-channel stereo cassette tape
deck
Tape: Philps standard compact cassette tape
Tape speed: 4.76 cm/sec.
Recording system and bias frequency: AC bias (53.5kHz)
Erasing system: AC erase (53.5kHz)
Track system: 4-track 2-channel
Frequency response: 30Hz ~ 15kHz (CrO2 tape)
30Hz ~ 15kHz (FeCr tape)
30Hz ~ 14kHz (Normal tape)
52dB
0.2%
100 sec. (Using C-60)
25dB (1 kHz)
S/N ratio:
Wow and Flutter:
F.F or REW time:
Channel separation:
Erase ratio: 60dB
Motor: 12V DC motor with electrical
governa
RECORD PLAYER SECTION
System: 2-speed belt drive type
Motor: 4-pole synchronous motor
Speed: 33-1/3 or 45 1r.p.m 2-speeds
Wow & Flutter: 0.15%
S/N ratio: 55dB
Cartridge: Magnetic (IM)
Stylus pressure: 2.58
Frequency characteristic: 20Hz ~ 15,000Hz
SG-4