Technics SU-Z980

ORDER NO.AD8806102C8
Service Manual
Amplifier
SU-Z980
Stereo Integrated Amplifier
SPECIFICATIONS (DIN 45 500)
@ AMPLIFIER SECTION
40 Hz ~ 20 kHz continuous power output
both channels driven 2 x 85 W (8Q)
DIN power output 2 x 100 W (89)
Total harmonic distortion
rated power at 40 Hz ~ 20 kHz 0.09% (8Q)
rated power at 1 kHz 0.05% (8Q)
half power at 1 kHz
Intermodulation distortion
tated power at 60 Hz:7 kHz=4: 1, SMPTE, 80 0.09%
Power bandwidth
both channels driven,-3dB
0.03% (8Q)
10 Hz ~ 20 kHz (8Q,THD 0.09%)
Residual hum and noise TmvV
Damping factor 35 (8Q)
Input sensitivity and impedance
PHONO 2.5mV/47 kQ
TUNER, CD, TAPE, VCR 2/TV, VCR 1/EQ
150mV/47 kQ
PHONO maximum input voltage (1 kHz,RMS) 140 mV
SIN
rated power (8)
PHONO 71 dB (IHF,A:78 dB)
TUNER, CD, TAPE, VCR 2/TV, VCR 1/EQ
70 dB (IHF,A:90 dB)
Frequency responce
PHONO RIAA standard curve
+ 0.8dB (30 Hz ~ 15 kHz)
TUNER, CD, TAPE, VCR 2/TV, VCR 1/EQ
10 Hz ~ 60 kHz (-3 dB)
Tone controls
BASS 50 Hz, +10dB ~ -10 dB
TREBLE 20 kHz, +10 dB ~ -10 dB
Technics
Color
Continental Europe.
Holland.
Belgium.
France.
Asia,Latin
America, Middle
Near East,Africa
and Oceania.
Super bass 80 Hz,+6 dB
Muting -20dB
Output voltage
TAPE, VCR 1/EQ REC OUT 150 mV
Channel blance, CD250Hz ~ 6,300Hz +1dB
Headphones output level and impedance 670 mV/330 Q
Channel separation, CD, 1 kHz 50dB
Load impedance
MAIN or REMOTE 8N~ 160
MAIN and REMOTE 8Q~ 160
wm GENERAL
Power consumption 310 W
Power supply
For continental Europe: AC 50/60 Hz.220 V
For United Kingdom and Australia: AC 50/60 Hz,240 V
For others: AC 50/60 Hz, 110 V/127 V/220 V/240 V
Dimensions (W x H x D) 430 x 119 x 255 mm
(16-15/16” x 4-11/16” x 10-1/32”)
Weight 7.2 kg (15.9 Ib.)
Notes:
Total harmonic distortion is measured by the digital
spectrum analyzer (H.P. 3045 system).
4
Matsushita Electric Industrial Co., Ltd.
Central P.O. Box 288, Osaka 530-91, Japan

Technics SU-Z980 Specifications

General

Brand	Technics
Model	SU-Z980
Category	Amplifier
Language	English

Summary

Pre-Repair Procedures

Protection Circuitry Operation

Troubleshooting Steps

Procedures for activated protection circuitry, including power cycling and problem diagnosis.

Disassembly Procedures

Cabinet, Panel, and PCB Removal

Circuit Board Diagrams

Main Circuit Board Layout

Detailed schematic and layout of the main PCB, covering signal and power sections.

Auxiliary PCB Layouts

System Schematics

Signal Path Schematics

Detailed schematics for Phono Equalizer, Volume Control, Tone, Super Bass, Input Selector, and Power Amplifiers.

Control and Power Schematics

Schematics for Micro Computer, Power Source, Motor Drive, Speaker/Headphone circuits.

System Block Diagram

Signal Flow and Interconnections

Visual representation of signal paths, input selectors, amplifiers, control circuits, and power supply.

Parts Lists

Cabinet Parts

Component Specification Lists

Resistors and Capacitors

Comprehensive list of resistors and capacitors with their part numbers, values, and specifications for various areas.