Sansui AUX 711 Service Manual

Page 1

I!

SANSUI

AU-X7ll

INTEGRATED STEREO AMPLIFIER

SERVICE MANUALl

mama, mime nexm
m.

CAUTION

critical for safety.

manufacturer.

appliance to the customer.

1.Parts identified by the A symbol on the schematic diagram and the parts list are
Use only replacement parts that have critical characteristics recommended by the

2.Make leakage-current or resistance measurements to determine that exposed
parts are acceptably insulated from the supply circuit before returning the

NOTE

The symbols, EU, SS and XX in this Service Manual mean followings respectively.

EU ..
SS ..
XX .
NON MARK.

Manufactured for European market.
Manufactured for Saudi Arabia market.
Standard Version.

Common Parts.

0 Specifications

Power output

Min. RMS, both channels driven, from 20 to 20,000 Hz, with no

more than 0.008% total harmonic distortion.
100 watts per channel into 8 ohms.
DIN

130 watts per channel into 4 ohms.
Load impedance 4 to 16 ohms
Immoduletlon

output

Frequency response in 1 welt)
Overall (from CD)..,..
POWER AMP DIRECT (PIN
RIAA curve deviation (PHONO-MM. 20 Hz to 20 kHz)

......... 0.2 dB, -0.2 dB
Input unemvrty end imp-deuce let 1 km)

PHONO (MC

PHONO (MM).

(Max. input capability.
monic distortion)
CD, TUNER, LINE.
TAPE/DAT PLAVAl ,
PROCESSOR RET
Output level (1.000 H1)
TAPE/DAT REC-1, 2. 3..
PROCESSOR SEND .....

150 mV/ZO (<0th
50 mV/ZO kohms
50 mV/ZO kohms

.. 150 mV into 47 kohms
. .150 mV into 47 ((0th

2 7 kHz = 4:1 SMPTE method)
ass than 0.008% at rated power TREBLE

...1 to 170,000 Hz, +0 dB, -3 dB
.,,DC to 220,000 Hz, +0 :18, -3 08

m at 1 kHz, less than 0.01% total har-

Signel to noise retio (short-circuit, A-network)
PHONO (MM
PHONO (MC)...
CD, TUNER, Ll
TAPE/DAT PLAY-
POWER AMP DIHE

Controls and Filter
BASS...

SUBSONIC
MUTING...

LOUDNES
(VOLUME: -30 dB position) +5 dB at 10 kHz
Power requirements ..................... AC 120V/220V/240V,
50/60 Hz

For U.S.A. & Canada.
Power consumption.

...AC 120V, 60 Hz

.560 watts 680 VA Rated
710 watts Maximum

Dimensions .................................. 430 mm (16-15/l6') W
163 mm (6-7/16') H
450 mm (17-3/4') D

.. 17.2 kg (37.9 lbs) net
19.5 kg (43.0 lbs) packed

Weight.

' Design end epoclfleetlom wbiect to chenge without notlce
Ior improvement.

" Due to local lewe and reguletlom. thle unit sold In some er-
eee are not equipped with verieble voltage selectors.

Page 2

AU-X711

1. BLOCK DIAGRAM

ivnzu

+5 EQUALIZER AMP +5
3 |c| PROCESSOR SOURCE DIRECT LOUDNESS TAM: EONThOL A:
. a
fi ° oszsa ° aszsh
I I
PHONO IQ3N5
MUTING TONE
: 52 aszza 0 m
I suasomc II:
, | O
|
I 5524a
0523- - - r 'L
CD 0 :
oSZB-Zn I
LINE m |
wzwag I_E___EE@J
TUNER
0529-3»: 0
O -1
PLAY' I 0329-40
jVRau - TONE CONTROL
0529-ch g ' NPUT TV
PLAY 2 __ ELECTOR BALANCED DIRECT H J a
_ . 1
OOSZS-Ia 2 3 l
.- o~ 3 I V
PLAY<3 - q
a" TREBLE BASS
RETURN
SEND
_ . +5
NORMAL 1 mm E POWER AMP -m
NORMAL 2 D'AMOND . +3
DIFFERENTIAL H 5mm A
I" a, ._(o. HOT(+)
CURRENT 5
g a: Av AMP :27? 1" oswa 0518!: o COLDI-)
32,3 28,7
C kVRZ kVR3 4/0 0 HOT(+)
____ kFTZ /G in: nu:
Balance Current L- O COLD_)
REC~1 1.1 Adj, Adj. System B
-- w
REC-2 rf PR 1-
HOT/COLD W CURRENT chRE' I
BALANCE «7 :5 AMP °- °~
Adj. km 24.5 33,9 IT!
.___

SIGNAL LINE (HOT AmDJ

'SIGNAL LINE (COLD Amp.)

Page 10

X711

4-18. F-6261 Power AMP Direct Balanced
Parts No. Stock No Description Terminal Board
kL1, 2 49250100 084114 Coil PM- No. Stock "0- Dominion
-Transistor 49478700 Neutral Connector
l03 46367101 ZSC2603
|Q4 46367001 ZSA1 1 15
or 46367201 23A1048 ,
4-19. F-6262 Input Selector SWItch Board
-Diode
IDS 03117600 1SZ473T77 Park No. Stock No. Dneriptlon
or 46086000 1S1588TP-3
vZener Diode
[613 49452800 47p,F 50V E.CA NDZH 49301400 05A23.3-X
lC14 49425900 470pF 125V P.C, or 49301500 05A23.3-Z
-LED
Caution: Power transistors are not included In this board assembly. nLD40 48841300 SEL3813A. PHONO
See page 10 for the code numbers for the power transistors. nLD41 48841300 SEL3813A. TUNER
nLD42 48841300 SEL3813A, LINE
. nLD43 48841300 SEL3813A. CD
4-16. F-6177 Protector Indicator Board
0828 49437000 Push SW., TUNER, LINE, CD
Part: No. Stock No. Description PHONO
n LD31 48841300 SEL3813A. PROTECTOR

4-20. F-6263 Tape Selector Switch Board

4-17. F-6260 Input Terminal Board Pam No. Stock No. Won
Part: No. Stock No. DuorIption -Zener Diode

nDZ12 49301400 05AZS.3-X

49359700 2P Terminal, CD or 49301500 05Aza.a-z

49359300 4P Terminal, TUNER. LINE

49359900 6P Terminal, TAPE-1~3 ~LED
nLD44 48841300 33.35134 TAPE-3
nLD45 49941300 SEL3813A. TAPE-2
nLD46 48841300 551.30134 TAPE-1
nLD47 48841300 SEL3813A, SOURCE
0529 49436700 Push sw., TAPE-1~3, SOURCE

5. OTHER PARTS

5-1 . Rear View

@GD?

EU Model