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Technics SU-810 Service Manual

Technics SU-810
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ORDER
NO.
AD8911327C2
Service
Manual
Stereo
Integrated
Amplifier
SPECIFICATIONS
(DIN
45
500)
20
Hz--20
kHz
continuous
power
output
both
channels
driven
2
X
40
W
(8
O)
1
kHz
continuous
power
output
both
channels
driven
(THD:
1%)
2
X
50
W
(8
n)
2
X
75
W
(4
n)
63
Hz-12.5
kHz
continuous
power
output
both
channels
driven
(0.7%)
,2
X
45
W
(8
0)
2
X
65
W
(4
Q)
Total
harmonic
distortion
rated
power
at
20
Hz-20
kHz
0.02%
(8
D)
rated
power
at
1
kHz
0.007%
(8
n)
half
power
at
20
Hz-20
kHz
0.02%
(8
n)
half
power
at
1
kHz
0.007%
(8
O)
Intermodulation
distortion
rated
power
at
50
Hz:
7
kHz
=
4:1,
SMPTE,
8
Cl
0
02%
Residual
hum
and
noise
1
mV
Damping
factor
60
(8
Q),
30(4
Q)
Headphones
output
level
and
impedance
450
mV/330
Q
Load
impedance
Aor
B
4
n~16
o
A
and
B
8
0~16
Q
Input
sensitivity
and
impedance
PHONO
2.5
mV/47
kO
TUNER,
CD,
AUX,
TAPE
1/DAT,
TAPE
2/ADAPT
150
nnV/22
kO
Phono
maximum
input
voltage
(IHF
’66,
1
kHz,
RMS)
150
mV
S/N
rated
power
(4
O)
PHONO
76
dB
(IHF
’66;
79
dB)
TUNER,
CD,
AUX,
TAPE
1/DAT,
TAPE
2/ADAPT
91
dB
(IHF
’66:
99
dB)
-26
dB
power
(4
Q)
PHONO
68
dB
TUNER,
CD,
AUX,
TAPE
1/DAT,
TAPE
2/ADAPT
70
dB
50
mW
power
(4
Q)
PHONO
64
dB
TUNER,
CD,
AUX,
TAPE
1/DAT,
TAPE
2/ADAPT
64
dB
Amplifier
SU-810
Color
(S)
.Silver
Type
(K)
.Black
Type
Area
Country
Code
Area
Color
(E)
Continental
Europe
(K)
(S)
(E5)
Continental
Europe
(K)
(EB)
Great
Britain
(K)
(EG)
F.R.
Germany
&
Italy
(K)
(S)
Frequency
response
PHONO
RIAA
standard
curve
±1
dB
(30
Hz~15
kHz)
TUNER,
CD,
AUX,
TAPE
1/DAT,
TAPE
2/ADAPT
3
Hz-80
kHz
(-3
dB)
+
0
dB,
-0.3
dB
(20
Hz-20
kHz)
Tone
controls
BASS
50
Hz,
+10
dB,
-10
dB
TREBLE
20
kHz,
+10
dB,
-10
dB
Loudness
control
(volume
at
-30
dB)
50
Hz,
+9
dB
Output
voltage
TAPE
t/DAT,
TAPE
2/ADAPT
REC
OUT
150
mV
Channel
balance,
AUX
250
Hz-6,300
Hz
±1
dB
Channel
separation,
AUX
1
kHz
50
dB
■
GENERAL
Power
consumption
380
W
Power
supply
For
Great
Britain
AC
50
Hz/60
Hz,
240
V
For
Continental
Europe,
F.R.
Germany
&
Italy
AC
50
Hz/60
Hz,
220
V
Dimensions
(W
X
H
X
D)
430
x
125x320
mm
(16-15/16”
X
4-15/16”
X
12-5/8”)
Weight
6.8
kg
(15
lb.)
Notes:
1.
Specifications
are
subject
to
change
without
notice.
Weight
and
dimensions
are
approximate.
2.
Total
harmonic
distortion
is
measured
by
the
digital
spectrum
analyzer.
Teclinics
Matsushita
Electric
Industrial
Co.,
Ltd.
Central
P.O.
Box
288,
Osaka
530-91,
Japan

Other manuals for Technics SU-810

Preview: Operating Instructions
Operating Instructions20 pages
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Technics SU-810 Specifications

General IconGeneral
Input Sensitivity2.5mV (MM), 150mV (line)
Signal to Noise Ratio76dB (MM), 90dB (line)
Output150mV (line)
Weight8.5 kg
Power Output45 watts per channel into 8Ω (stereo)
Channel Separation55dB (1kHz)
Speaker Load Impedance4Ω - 16Ω
Dimensions430 x 135 x 290 mm
TypeStereo Integrated Amplifier

Summary

Specifications Overview

Power Output and Distortion Details

Details continuous power output, THD, IM distortion, damping factor, and residual hum/noise.

Before Repair Procedures

Power Supply Voltage and Current Consumption

Outlines procedures for discharging capacitors and checking current draw after repair.

Protection Circuitry

Circuit Operation and Troubleshooting

Explains protection circuit function and steps to take if activated.

Controls and Connections Overview

Front Panel Controls

Identifies and describes each control and indicator on the front panel.

Connecting External Components

Terminal Connections Guide

Details how to connect turntables, CD players, tuners, and auxiliary devices to specific terminals.

Audio Input and Speaker Output Connections

Tape Deck and DAT Connections

Speaker System Wiring

Provides instructions for connecting speaker systems to the amplifier, including load impedance.

System Block Diagram

Signal Flow and Component Interaction

Presents a block diagram illustrating signal paths and the interaction between major circuit blocks.

Circuit Diagrams

Schematic Diagram Overview

Provides a comprehensive schematic covering input selection, tone amplifier, volume, LED, speaker switching, power, and AC input circuits.

Detailed Circuit Schematics

Volume, Tone, and Power Amplifier Circuits

Details the schematic for volume control, tone amplifier, and the main power amplifier IC.

Speaker Switch, LED, and AC Input Circuits

Replacement Parts List

Integrated Circuits and Transistors

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