Technics SU-8055 X User Manual

ORDER NO. $D7811-1472
Service
Manual
Stereo Integrated DC Amplifier
SU-8055
(X), (XA), (XAL), (XGH),
(E), (EG), (XE), (EB), (XGF)
SU-8055K
(X), (XA), (XAL), (XGH),
(E), (EG), (EB)
=
m
my
°
a
=)
a
SU-8055
* The models SU-8055 (X, XA) and SU-8055K (X, XA)
are available in Asia, Latin America, Middle East and
Africa only.
* The models SU-8055 (XAL) and SU-8055K (XAL) are
available in Australia only.
* The models SU-8055 (XGH) and SU-8055K (XGH) are
available in Holland only.
* The models SU-8055 (E, EG) and SU-8055K (E, EG)
are available in Scandinavia and European only.
* The model SU-8055 (XE) is available in United
Kingdom only.
* The models SU-8055 (EB) and SU-8055K (EB) are
available in Belgium only.
* The model SU-8055 (XGF) is available in France only.
SU-8055K
TECHNICAL SPECIFICATIONS Specifications are subject to change without notice for further improvement.
[DIN 45 500)
AMPLIFIER SECTION S/N rated power at4{ PHONO MM = 73aB (IHF, A: 85 dB)
PHONO M d HF,A:
1 kHz continuous power output TUNER, AUX 86 qB (He: - 87 ag}
both channels driven 2 x 56 W (40), 2 x 50 W (82) 26 dB power at4{Q PHONO MM 62 dB
40 Hz ~ 16 kHz continuous power output P ne PHONO MC 58 dB
both channels driven 2x48W (40), 2x47 W(82) TUNER, AUX 63dB
20 Hz ~ 20 kHz continuous power output :
both channels driven 2 x 48 W (40), 2 x 47 W (82) Sint powerae At) SuONG ee ee ae
Power bandwidth
: TUNER, AUX 60 dB
ee
eae
2
A
ir
pee
a
Frequency
response
PHONO
RIAA
standard
curve
ik : 30 Hz ~ 15 kHz, +0.5dB
Total harmonic distortion me
rated power at 1 kHz 0.03% (4), 0.02% (89) TMNER BUR TARE 20 Hee 0 Re 20-508
rated power at 40 Hz ~ 16 kHz 0.03% (4), 0.02% (8) TO oe BO KAZ. LOB
rated
power
at
20
Hz
~
20
kHz
0.03%
(42M),
0.02%
(82)
Rane-coottols
earELE
Bis,
Seue
as
se
6
a3
half
power
at
20
Hz
~
20
kHz
0.01%
(8)
High
filter
a
7kH
“6
dB/
t
half
power
at
1
kHz
0.008%
(82)
Sunsoate
filter
30
He
6
d
pe
—26
dB
power
at
1
kHz
0.15%
(4)
ve
50
He
+9
JB
Loudness control (volume at —30 dB) 50 Hz,+9dB
50mW power at 1 kHz 0.2% (40) Output voltage and impedance REC OUT 150 mV
Intermodulation distortion REC/PLAY 30 mV/82 kQ
rated power at 250 Hz: 8 kHz = 4:1, 40 0.03%
rated power at 60 Hz: 7 kHz = 4:1, SMPTE, 80 0.02% Channel balance (260 Hz ~ 6300 Hz}, AUX +1.0 dB
. * Channel separation at 1 kHz, AUX 60 dB
Residual hum & noise 0.8 mV (0.8 mV, IHF, A) aA
Damping factor 18 (42), 36(8Q) Headphones output level and impedance 440 mV/3300.
ea: : Load impedance MAIN or REMOTE 4~160
Input sensitivity and impedance
PHONO MM 2.5 mV/47 kO MAINS REMOTE Galeo
PHONO MC 1704V/1000
TUNER, AUX 150 mV/47 kQ GENERAL
TAPE 1, REC/PLAY 180 mV/33 kN Power consumption 500 W
TAPE 2 150 mV/33 kN. Power supply (50 Hz/60 Hz) 110V/120V/220V/240V
PHONO maximum input voltage (1 kHz, RMS) MM 150 mV Dimensions (W x H x D) 430 x 142 x 255 mm
MC 6.5mV Weight 7.7 kg
° Matsushita Electric Trading Co., Ltd.
Technics
P.O.
Box
288,
Central
Osaka
Japan

Technics SU-8055 X Specifications

General

Power output	55 watts per channel into 8Ω (stereo)
Input sensitivity	2.5mV (MM), 150mV (line)
Output	150mV (line)
Type	Stereo Integrated Amplifier
Speaker load impedance	16Ω

Summary

TECHNICAL SPECIFICATIONS

AMPLIFIER SECTION

Detailed electrical characteristics and performance parameters of the amplifier section.

GENERAL

Overall specifications including power supply, dimensions, and weight.

LOCATION OF CONTROLS

HOW TO REMOVE THE AMPLIFIER CABINET, BOTTOM PLATE AND FRONT PANE

Step-by-step guide for safely disassembling the unit's exterior panels.

BEFORE STARTING THE REPAIRING

ALIGNMENT INSTRUCTIONS

Procedures for calibrating specific electronic settings and performance metrics.

Adjustment of DC unbalanced voltage

Steps to set and balance DC voltage levels within the circuitry for optimal performance.

ALIGNMENT POINTS

HOW TO REMOVE THE POWER IC

Detailed guide for safely removing and replacing the main power integrated circuit.

REPLACEMENT PARTS LIST

CABINET and CHASSIS PARTS

List of external and structural components available for replacement.

SCREWS and WASHERS

Inventory of fasteners and small hardware required for assembly and repair.

PACKING PARTS

Components specifically related to the unit's packaging and shipping materials.

ACCESSORIES

List of included or optional accessories provided with the unit.

CHANGE OF PARTS LIST

INTEGRATED CIRCUITS

List of integrated circuits used in the unit for replacement purposes.

TRANSISTORS

List of transistors used in the unit for replacement purposes.

DIODES

List of diodes used in the unit for replacement purposes.

COILS and TRANSFORMER

List of coils and transformers used in the unit for replacement purposes.