Technics SU-Z55 EK - User Manual

ORDER NO. $D83062525C8
Service Manual
Stereo Integrated DC Amplifier
SU-Z55
(E], [EGA], [EK], [EF], [EH].
[EB], [Ei], [XA], [XL], [PC]
SU-Z55(k)
[E], [EGA], [EK], [EH].
[EB], [XA], [PC]
Areas
is available in Switzerland and Scandinavia.
is available in F. R. Germany.
is available in United Kingdom.
is available in France.
is available in Holland.
is available in Belgium.
is available in Italy.
is available in Southeast Asia, Oceania,
Africa, Middle Near East and Central
South America.
is available in Australia.
is available in European Audio Club.
* The colors of this model include silver and black,
* The black type model is provided with (K) in the Service Manual.
Specifications (Specifications are subject to change without notice for further improvement.)
(DIN 45 500) ai
@ AMPLIFIER SECTION rated power (40)
PHONO 75 dB (IHF, A: 81 dB)
TUNER, AUX/CD/VIDEO, TAPE 1, 2
40
Hz~
20
kHz
continuous
power
output
86
dB
(IHF,
A:
97
dB)
both
channels
driven
2
X
45W
(40)
2
X
40W
(80)
—26
dB
power
(4)
PHONO
TUNER, AUX/CD/VIDEO, TAPE 1, 2
50 mW power (42)
PHONO
0.05%
(42)
TUNER,
AUX/CD/VIDEO,
TAPE
1,
2
0.03%
(8)
Tone
controls
0.05% (4) BASS
0.03% (82) TREBLE
0.05% (49) Loudness control (volume at —30 dB)
0.03% (8) Output voltage and impedance
65 dB
1
kHz
continuous
power
output
65
dB
both
channels
driven
2X
50W
(49)
2 X 42W (89) ee
Total
harmonic
distortion
62
dB
rated power at 40 Hz~20 kHz
50 Hz, +10 dB~ —10 dB
20 kHz, +10 dB~ —10 dB
50 Hz, +9 dB
rated power at 1 kHz
half power at 40 Hz~20 kHz
150 mV
0.007% (42) REC OUT
Channel balance, AUX/CD/VIDEO 250 Hz~6,300 Hz
Channel separation, AUX/CD/VIDEO 1 kHz
Headphones output level and impedance
Load impedance
MAIN or REMOTE
MAIN and REMOTE
@ GENERAL
Power consumption 310W
Power supply
For United Kingdom and Australia AC 50 Hz/60 Hz, 240V
For continental Europe AC 50 Hz/60 Hz, 220V
For others AC 50 H2z/60 Hz, 110V/120V/220V/240V
Dimensions (WXHXD) 430 X 86 X240 mm
(16-15/16 "x 3-3/8"'x9-7/16")
' 5.1kg
half power at 1 kHz
0.005% (8Q)
0.01% (40)
0.01% (49)
~26 dB power at 1 kHz
50 mW power at 1 kHz
Intermodulation distortion
rated power at 250 Hz: 8 kHz=4:1, 40 0.05%
rated power at 60 Hz: 7 kHz=4:1, SMPTE, 8Q 0.03%
Power bandwidth
both channels driven, —3 dB
10 Hz~25 kHz (49)
10 Hz~25 kHz (82)
0.8 mV
20 (40), 40 (89)
Residual hum and noise
Damping factor
Input sensitivity and impedance
PHONO
TUNER, AUX/CD/VIDEO, TAPE 1, 2
PHONO maximum input voltage (1 kHz, RMS)
Frequency response
PHONO
2.5 mV/47kQ
150 mV/22kQ
150 mV
RIAA standard curve
+0.8 dB (30 Hz~15 kHz)
TUNER, AUX/CD/VIDEO, TAPE 1, 2
10 Hz~80 kHz (-3 dB)
Technics
+1 dB
50 dB
420 mV/330
BQ-~ 160
4N-~160
Weight
Note:
Total harmonic distortion is measured by the digital ssectrum
analyzer (H.P. 3045 system).
Matsushita Electric Trading Co., Ltd.
PO. Box 288, Central Osaka Japan

Technics SU-Z55 EK Specifications

General

Brand	Technics
Model	SU-Z55 EK
Category	Amplifier
Language	English

Summary

Technical Specifications

Amplifier Section

Technical specifications for the amplifier's power output, distortion, and frequency response.

Signal-to-Noise Ratio (S;N)

S/N ratios for different input sources and power levels.

Safety and Repair Preparation

Safety Precautions

Essential safety guidelines and warnings for handling the equipment.

Before Repair and Adjustment

Protection Circuitry

Disassembly Instructions

Removing Cabinet and Front Panel

Removing Switch PC Boards

Component Identification

Block Diagram

Schematic Diagrams