Technics SH-8055 Service Manual

ORDER NO. SD83062526C9
Service Manual
Stereo Graphic Equalizer
SH-8055
[E], [EK], (EF],[EB], [EH], [EGA],
[XA],[XL],[PA],[PE], ie
(E],{EK], [EF], [EB], (K)
[EGA],[XA],[XL]
* [E] is available in Scandinavia and Switzerland.
* [EK] is available in United Kingdom.
* [EF] is available in France.
* [EB] is available in Belgium.
* [EH] is available in Holland.
* [EGA] is available in F.R. Germany.
* [XA] is available in Southeast Asia, Oceania, Africa,
Middle Near East and Central South America.
* [XL] is available in Australia.
* [PA] is available in Far East PX.
* [PE] is available in European Military.
* [Ei] is available in Italy.
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Areas
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* 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)
Frequency response
(center position)
Maximum output
voltage :8V (1 kHz, THD 0.01%)
Rated output voltage AN
Rated total harmonic
distortion
Band level controls :+12dB~-12dB
(12 elements continuously variable
per channel)
: 25 Hz, 40 Hz, 63 Hz, 100 Hz,
160 Hz, 250 Hz, 500 Hz, 1 kHz,
2 kHz, 4 kHz, 8 kHz, 16 kHz
: 5 Hz~100 kHz, —1 dB
Center frequency
Pink noise output
: 0.003% (20 Hz~20 kHz) voltage :50mV
Input sensitivity
Signal-to-noise ratio
Maximum input
voltage
Input impedance
0.002% (1 kHz)
mV
: 102 dB (110 dB, IHF' A)
:8V (1 kHz)
247 kO
Compatible microphone
sensitivity
Microphone attenuator
GENERAL
Power supply
: above —74 dBV/ubar (1 kHz)
:-20dB
: AC 110 V/120 V/220 V/240 V,
Gain :0+1dB 50 Hz/60 Hz.
Channel balance Power consumption :17W
250 Hz~6300 Hz : +0.5dB Dimensions
Channel separation (HxWxD) : 108 430x270 mm
ike 70 dB (4-1/4"x 16-15/16"x 10-5/8")
Weight : 4.1 kg (9.0 Ib)
CONTENTS
Page Page
SAFETY PRECAUTION ..........2. 00 cee c cc eens 2 DISASSEMBLY INSTRUCTIONS.................. 6
BLOCK DIAGRAM OF FUNCTION.............+.-- 2 TOTAL FREQUENCY RESPONSE ................ 8
LOCATION OF CONTROLS ...............2222. 3 PRINTED CIRCUIT BOARDS ................... 9
REAL TIME SPECTRUM ANALYZER .............. 3 REPLACEMENT PARTS LIST .................0.05 15
PINK NOISED:.\. .sere sos Sue ML bee cee 4 JEXPLODED VIEW) nosis esc cccisaneat ei ge uenpyea Gyeet ds ake 17
HOW TO USE THE REAL TIME SCHEMATIC DIAGRAM..............00 0082 eee 20
SPECTRAM ANALYZER ..............2202005 4 jIBEOCK, (DIAGRAM) 3.5 s:ie:ce teiisite is oe wee ow we ee ee 28
SPECTRUM ANALYZER AND TIMING CHART........ 30
Panasonic Tokyo
Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan
Matsushita Electric Industrial Co., Ltd.
@
i echnics 1-2, 1-chome, Shiba-koen, Minato-ku, Tokyo 105 Japan