Technics SU-Z65 - Service Manual

2082184C8
Stereo
Integrated
Amplifier
SU-
Z65
], [EK], [EF],
a [Ei], [XA],
2U-
Z65\(K
(EK],[EH],[EBI,(E
1
Areas
* [E] is available in Scandinavia and Switzerland.
* [EK] is available in United Kingdom.
* [EF] is available in France.
* [EH] is available in Holland.
* [EB] is available in Belgium.
* [Ei] is available in Italy.
*
[XA]
is
available
in
Southeast
Asia,
Oceania,
Africa,
Middle
Near
East
and
Central
South
America.
* [XL] is available in Australia.
*
The
cabinet
and
front
panel
are
available
in
black
color
and
silver
types.
*
The
black
type
model
is
provided
with
(K)
in
the
Service
Manual.
Specificat
IONS:
(Specifications
are
subject
to
change
without
notice
for
further
improvement.)
(DIN 45 500)
®@
AMPLIFIER
SECTION
input
sensitivity
and
impedance
20
Hz~20
kHz
continuous
power
output
PHONO
2.5
mW/47kQ
both
channels
driven
2
x
50W
(4Q)
TUNER,
AUX
150
MV/22kO
2
X
50W
(82)
TAPE
1
150
mV/22kQ
40
H2~16
kHz
continuous
power
output
TAPE
2
150
MV/22kQ
both
channels
driven
2
<
50W
(4)
PHONO
maximum
input
voltage
(1
kHz,
RMS)
150
mV
2
X
50W
(82)
Frequency
response
1
kHz
continuous
power
output
PHONO
RIAA
standard
curve
both
channels
driven
2
X
55W
(4Q)
+0.8
dB
(30
Hz~15
KHz)
2
X
55W
(8Q)
TUNER,
AUX,
TAPE
1,
2
5
Hz~100
kHz
(-3
dB)
Total
harmonic
distortion
Tone
controls
rated
power
at
20
Hz~20
kHz
0.05%
(4Q)
BASS
50
Hz,
+10
dB~
-10
dB
0.007%
(8Q)
TREBLE
20
kHz,
+10
dB~
-10
dB
rated
power
at
40
Hz~16
kHz
0.05%
(49)
Subsonic
filter
30
Hz,
—6
dB/oct.
0.007%
(82)
High-cut
filter
7
kHz,
-6
dB/oct.
rated
power
at
1
kHz
0.007%
(4Q)
Loudness
contro!
(volume
at
~30
dB)
50
Hz,
~9
dB
0.005%
(82)
Output
voltage
and
impedance
half
power
at
20
Hz~20
kHz
0.007%
(802)
REC
OUT
180
mV
half
power
at
1
kHz
0.005%
(8Q)
Channel
separation,
AUX
1
kHz
50
dB
—26
dB
power
at
1
kHz
0.01%
(4Q)
Headphones
output
level
and
impedance
470
mV:3
30Q
50
mW
power
at
1
kHz
0.01%
(42)
Load
impedance
Intermodulation
distortion
MAIN
or
REMOTE
4Q~
160
rated
power
at
250
Hz:
8
kHz=4:1,
4Q
0.05%
MAIN
and
REMOTE
8O~
160
rated
power
at
60
Hz:
7
kHz=4:1,
SMPTE,
80
0.007%
Power
bandwidth
M@
GENERAL
both
channels
driven,
-3
dB
10
Hz~30
kHz
(49,
0.03%)
10
Hz~30
kHz
(8,
0.02%)
Power
consumption
345W
Residual
hum
and
noise
0.6
mv
Power
supply
AC
50
Hz/60
Hz
220V
Damping
factor
20
(4),
40
(8Q)
(For
continental
Europe)
S/N
AC
50
Hz/60
Hz,
110V/120V/220W240V
rated
power
(40)
(For
citvers)
PHONO
75
dB
(IHF,
A:
81
dB)
Dimensions
(WXHXD)
430
X
86
K
28
mm
TUNER,
AUX,
TAPE,1,
2
86
dB
(IHF,
A:
97
dB)
(16-15/16”
X
3-3/8"
X
11-1732")
—26
dB
power
(4Q)
Weight
3.
3kg
PHONO
65
dB
(15
Ib.)
TUNER,
AUX,
TAPE
1,
2
65
dB
50
mW
power
(40)
Note:
PHONO
62
dB
Total
harmonic
distortion
is
measured
by
the
digital
spectrum
62 dB analyzer (H.P. 3045. system).
TUNER, AUX, TAPE 1,2
Matsushita
Electric
Trading
Co.,
Ltd.
‘Te
chnics
PO.
Box
288,
Central
Osx
a
Japan.

Technics SU-Z65 Specifications

General

Brand	Technics
Model	SU-Z65
Category	Amplifier
Language	English

Summary

Specifications

Amplifier Section Specifications

Details power output, distortion, and frequency response for amplifier circuits.

Input Sensitivity and Impedance

Lists input requirements for PHONO, TUNER, AUX, and TAPE.

Tone Controls, Filters, and Output Levels

Covers tone adjustments, filters, and output voltage/impedance specs.

General Unit Specifications

Provides power consumption, dimensions, weight, and other general data.

Before Repair and Adjustment

Pre-Repair Safety Precautions

Outlines essential safety steps before starting any repair work.

Technical Guides

Speaker Impedance Detection Circuit Principles

Explains the circuit's function, basic principles, and operational timing.

Voltage Comparing Circuit Functionality

Describes how the voltage comparing circuit detects speaker impedance and controls relays.

Protection Circuitry

Protection Circuit Operation and Troubleshooting

Details symptoms of protection activation and the procedure to resolve it.

Disassembly Instructions

Cabinet and Bottom Board Removal

Step-by-step guide for removing the outer cabinet and bottom chassis panel.

Bottom Board Installation and Front Panel Removal

Covers re-fitting the bottom board and removing the front panel.

PCB Removal Procedures

Guides for removing specific circuit boards like Volume and LED indicators.

FL Meter PCB Handling and Front Chassis Removal

Instructions for FL meter PCB and front chassis disassembly.

Power Transistor Removal

Steps for accessing and removing the power transistor assembly.

Measurements and Adjustments

Adjustment Points Overview

Introduces the section on measurements and adjustments, listing key points.

How to Replace Chips (Resistors)

Chip Replacement Notes and Precautions

Provides essential guidelines and safety tips for replacing IC chips.

Printed Circuit Boards (PCBs)

PCB Identification and Location Guide

Lists and maps the various printed circuit boards within the unit.

Schematic Diagram

Overall Circuit Schematic Diagram

Presents the complete internal circuit layout for the amplifier.

Block Diagram

Component Terminal Guide

Lists and identifies the pinouts for key electronic components.

Replacement Parts List

Exploded View of Components

Shows a visual breakdown of the unit's parts and their assembly order.

Resistors and Capacitors

Component Numbering Systems and Values

Explains the naming conventions and lists values for resistors and capacitors.