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Technics SH-E7

Technics SH-E7
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Service
Manual
Stereo
Graphic
Equalizer
SPECIFICATIONS
(DIN
45
500)
Frequency
response
(center
position)
Maximum
output
voltage
Rated
output
voltage
Maximum
input
voltage
Rated
input
voltage:
Rated
total
harmonic
distortion
:
5Hz~100
kHz
(—1
dB)
:
7V(1
kHz,
THD
0.03%)
:1V
:
7V
(1
kHz)
:1V
:
0.005%
(20
Hz~20
kHz),
at
1
V
ouput
0.003%
(1
kHz),
at
1
V
output
Input
Sensitivity
:
150
mV
Signal-to-noise
ratio
:
99
dB/1
V
(105
dB/1
V,
IHF’A)
Input
impedance
:
47kQ
Gain
:
0+1dB
Channel
balance
250
Hz~6300
Hz
:
+0.5dB
Channel
separation
1
kHz
:
70
dB
HM
CONTENTS
Page
LOCATION
OF
CONTROLS..............-.
2
CONNECTION
.........0
00+
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2
OPERATION:
js.
io5
doctrine
ie
ee
a
earn
an’
BS
3
EXAMPLES
OF
APPLICATIONS
...........-.
5
ACCESSORIES:
2
t-4
0
hates
aerate
wk
Sa
hee
5
DISASSEMBLY
INSTRUCTIONS
.............
6
BLOCK
DIAGRAM
..........
0020
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7,8
Technics
ORDER
NO.
HAD8704080C8
Equalizer
SH-E/0
Color
(K)....Black
Type
Continental
Europe
.
Holland
.
Belgium
..
France
..
United
Kingdom
.
F.R.
Germany
Italy
.
Switzerland
.
Australia
.
Asia,
Latin
America,
Middle
Near
East,
Africa
&
Oceania
.
Saudi
Arabia
Equalization-level
controls
:
+12
dB~-12dB
(7
frequency
ranges,
in
2-dB
steps)
:
63
Hz,
160
Hz,
400
Hz,
1
kHz,
2.5
kHz,
6.3
kHz,
16
kHz
Center
frequencies
GENERAL
Power
supply
:
AC
50
H2/60
Hz,
240
V
Power
consumption
7
11W
(with
power
switch
at
STANDBY:
6.5
W)
Dimensions
(WxHxD)
:
360
103x281
mm
(14%6"x
46"
x
11
6")
Weight
:
3kg
(6.6
Ib)
Note
Specifications
are
subject
to
change
without
notice.
Weight
and
dimensions
shown
are
approximate.
Page
FUNCTION
OF
IC
TERMINALS............-.
9~
11
SCHEMATIC
DIAGRAM
.............00005
12
~
16
RESISTORS
&
CAPACITORS
.....
.......--5
17,
18
PRINTED
CIRCUIT
BOARDS..............
19
~
22
REPLACEMENT
PARTS
LIST
...........045
23,
24
EXPLODED
VIEW......
2...
eee
eee
ee
25,
26
Matsushita
Electric
Trading
Co.,
Ltd.
P.O.
Box
288,
Central
Osaka
Japan
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Technics SH-E7 Specifications

General IconGeneral
TypeStereo Graphic Equalizer
Equalization Range±12 dB
Input Impedance47 kΩ
Output Impedance1 kΩ
Signal-to-Noise Ratio100 dB
Total Harmonic Distortion0.005%
Frequency response5 Hz to 100 kHz
Input Sensitivity150 mV
Frequency Bands7 bands
Dimensions430 x 95 x 285 mm
Frequency Range16 kHz

Summary

Specifications Overview

Frequency Response and Output Characteristics

Details on frequency range, maximum output voltage, and rated output voltage.

Input Sensitivity, Distortion, and General Electrical Specs

Covers input sensitivity, signal-to-noise ratio, impedance, gain, distortion, and input voltage.

Equalization Controls and General Data

Information on equalization level controls, center frequencies, power supply, dimensions, and weight.

Manual Section Navigation

Controls, Connections, and Operation Overview

Lists sections covering control locations, connections, and operational procedures.

Applications, Parts, and Technical Diagrams

Lists sections on applications, accessories, disassembly, and block diagrams.

IC Terminals and Component Data

Lists sections detailing IC terminal functions and replacement parts.

Location of Controls

Front Panel Control Layout and Indicators

Identifies and explains controls, indicators, and buttons on the front panel.

Rear Panel and Remote Terminal Identification

Details rear panel outlets and remote control terminals for connectivity.

Connections Guide

Amplifier and Remote Connectivity

Instructions for connecting the equalizer to amplifiers and remote control devices.

Operation Procedures

Initial Setup and Tone Adjustment

Covers power on, volume control, EQ setting, spectrum display, and tone adjustments.

Storing and Recalling Equalization Curves

Explains how to memorize, store, and recall custom equalization settings.

Advanced Equalization Functions and Battery Info

Details reverse curve, EQ Plus features, and lithium battery information and warnings.

Examples of Applications

Sound Enhancement Techniques

Guidance on noise reduction, vocal enhancement, and boosting disco music frequencies.

Specific Application Scenarios

Techniques for reducing tape hiss and customizing car stereo sound settings.

Accessories Guide

Included Accessories and Part Numbers

Lists included accessories like connection cables and remote control cords with part numbers.

Disassembly Instructions

Component Removal Procedures

Step-by-step guide for removing the cabinet, front panel, and main PCBs.

Block Diagram Overview

System Signal Flow and Circuit Blocks

Illustrates the overall signal path and major functional blocks of the equalizer.

Function of IC Terminals

Microcomputers IC51 IC52 Pin Descriptions

Detailed pinout and function for microcomputers IC51 and IC52.

Microcomputer IC54 Pin Descriptions

Detailed pinout and function for microcomputer IC54.

Electronic Volume Control IC Pin Descriptions

Detailed pinout and function for electronic volume control ICs (IC300, IC400).

Lithium Battery Safety Precautions

Handling and Replacement Warnings

Important safety notices and warnings regarding lithium battery handling and replacement.

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