HST-SE581
SERVICE MANUAL
• This set is the tuner deck and amplifier
section in SEN-T481.
Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY” and the double-D symbol a and “PRO
LOGIC” are trademarks of Dolby Laboratories
Licensing Corporation.
Tape deck Model Name Using Similar Mechanism HST-471
Section Tape Transport Mechanism Type TCM-220WR2
SPECIFICATIONS
AEP Model
E Model
Australian Model
Tuner section
FM stereo, FM / AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM leadantena
Antenna terminals 75 Ω unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuningrange
European model: 531 – 1,602 kHz
Other models: 531 – 1,602 kHz (with the interval set at
9 kHz)
530 – 1,710 kHz (with the interval set at
10kHz)
Antenna AM loop antenna, outdoor antenna
terminals
Intermediate frequency
450 kHz
Amplifier section
European models:
(FRONT)
DIN power output 90 + 90 W
(at rear / center / woofer off at 1 kHz, 8 Ω)
Continuous RMS power output
110 + 110 W
(at rear / center / woofer off at 1 kHz,
10% THD, 8 Ω)
70 W / ch
(at SURROUND ON at 1 kHz,
10% THD, 8 Ω)
(REAR) 40 W
(at front / center / woofer off at 1 kHz, 8 Ω)
(CENTER) 40 W
(at front / rear / woofer off at 1 kHz, 8 Ω)
(WOOFER) 70 W
(at front / rear / center off at 40 Hz, 4 Ω)
Other models:
Peak music power output
1,600 W (total)
(FRONT)
Continuous RMS power output
90 + 90 W
(at rear / center / woofer off at 1 kHz,
10% THD, 8 Ω)
(REAR) 40 W
(at front / center / woofer off at 1 kHz, 8 Ω)
(CENTER) 40 W
(at front / rear woofer off at 1 kHz, 8 Ω)
(WOOFER) 70 W
(at front /rear/ center off at 40 Hz, 4 Ω)
Inputs
PHONO (phono jacks):
sensitivity 2.5 mV, impedance 50 kΩ
CD (phono jacks): sensitivity 400 mV, impedance 50 kΩ
VIDEO1, 2 (phono jacks):
sensitivity 250 mV, impedance 50 kΩ
— Continued on next page —
CASSETTE DECK RECEIVER
MICROFILM
5-3. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • See page 10 for Waveforms. • See page 39 for IC Block Diagrams.
HST-SE581
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HST-SE581
5-4. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • See page 39 for IC Block Diagrams.
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5-7. SCHEMATIC DIAGRAM — DISPLAY SECTION — • See page 10 for Waveforms. • See page 41 for IC Pin Function.
HST-SE581
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