Technics SU-8044 - Service Manual

OROER NO. SO7811-1471
Stereo Integrated DC Amplifier
SU-8044
(X), (XA), (XAL), (XGH)
(E),
(EG),
(XE),
(XGF),
(EB)
SU- ‘SO044K
), (XAL), (XGH)
“e : (EQ), (EB)
* The models SU-8044 (X, XA) and SU-8044K {X, XA)
are available in Asia, Latin ee Middle East and
Africa only.
* The models SU-8044 (XAL) and SU-8044K (KAL)
are available in Australia only.
* The models SU-8044 (XGH) and SU-8044K (GH)
are available in Holland only.
* The models SU-8044 (E, EG) and SU-8044K (E, EG)
are available in Scandinavia and European only.
* The mode! SU-8055 VES is availabie in United
. Kingdom oniy. _
- * The models SU-8044 (EB) sad SU-8044K (E8) are
available in Beigium anly.
* The mode! SU-8055 (XGF) is available in France only.
TECHNICAL SPECIFICATIONS Specifications are subject to change without notice for further improvement.
[DIN 45 500] smn
AMPLIFIER
SECTION
rated
power
at
49)
PHONO
73
dB
(IHF,
A:
80
dB
1 kHz continuous power output | TUNER, AUX, TAPE 86 dB (IHF, A: 97 dB) .
both channels driven 2x 46 W (49), 2x 40 W (8) -~26 d8 power at4(Q) PHONO 6248”
40 Hz ~ 16 kHz continuous power output TUNER, AUX, TAPE 63 d8
both channels driven 2x 40 W (4M), 2x 38 W(82) 50 mW power at 41 PHONO . 58 d8
20 Hz ~ 20 kHz continuous power output | | TUNER, AUX, TAPE 60 dB
both channels driven 2x 40 W (40), 2x 38 W (82) Frequency response PHONO RIAA standard curve
Power bandwidth 3 30 Hz ~ 15 kHz, t0.8d8
both channels driven, ~3 dB 5 Hz ~ 30 kHz (4) TUNER, AUX, TAPE 20 Hz ~ 20 kHz, +0.5dB
5 Hz ~50 kHz (8) 10 Hz ~50 kHz,~1dB
Total harmonic distortion Tone controls BASS 50 Hz, +10d8 ~—10d8
rated power at 1 kHz 0.03% (412), 0.02% (82) TREBLE 20 kHz, +10dB8 ~~10d8
rated power at 40 Hz ~ 16 kHz 0.03% (42), 0.02% (82) High filter 7 kHz, ~6 dB/act
rated power at 20 Hz ~ 20 kHz 0.03% (42), 0.02% (80) Loudness control (volume at —30 dB) 50 Hz, +9 dB
half power at 20 Hz ~ 20 kHz 0.015% (81?) Output voltage and impedance REC OUT 150 mv
half power at 1 kHz 0.008% (81) REC/PLAY 30 mV/82 kQ
-26 dB power at 1 kHz / 0.15% (40) Channel balance (250 Hz ~ 6300 Hz), AUX +1.0d8
5OmW power at 1 kHz — 0.2% (42) Channel! separation at 1 kHz, AUX 58d8
intermodulation distortion Headphones output level and impedance 4490 mV/330N
rated power at 250 Hz: 8 kHz = 4:1, 422 0.03% Load impedance MAIN or REMOTE 4~160
rated power at GO Hz: 7 kHz 2 4:1, SMPTE, 80 0.02% MAIN + REMOTE 8~160
Residuat hum & noise 0.8 mV (0.8 mV, IHF, A) ;
Damping factor 16 (49), 32(8QN) GENERAL
ONO i ascot 2.5 mV/47 kD Power consumption 400 W
Power supply (50 Hz/60 Hz) 110V/120V/220V/240V
TAPE 1, REC/PLAY 180 mV/33 kN Weicht 67k
TAPE 2 150 mV/33 kl 3 neg
PHONO maximum input voitage (1 kHz, RMS) 150 mV
‘Technics
Matsushita
Electric
Trading
Co.,
Ltd.
P.O. Box 288, Central Osaka Japan

Technics SU-8044 Specifications

General

Input Sensitivity MM	2.5mV
Input Sensitivity Line	150mV
Output Line	150mV
Type	Integrated Stereo Amplifier
Channel Separation MM	60dB (1kHz)

Summary

Technical Specifications

Amplifier Section

Detailed specifications for the amplifier section, including power output and distortion.

General

General specifications such as power consumption, dimensions, and weight.

Location of Controls

How to Remove the Amplifier Cabinet, Bottom Plate and Front Panel

Step-by-step guide for disassembling the unit's main external components.

Before Starting the Repairing

Alignment Instructions

Adjustment of DC Unbalanced Voltage

Procedure for setting the DC offset voltage for proper operation and stability.

How to Remove the Power IC

Schematic Diagram

Block Diagram of Integrated Circuits

Terminal Guide of Transistor & IC

Block Diagram

Exploded Views

Replacement Parts List

Change of Parts List

Packings

Accessories