Sansui A 500 Service Manual

Page 1

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SERVICE MANUAL -SPEC|FICATIONS

Power output
Min. RMS, both channels driven, from 40 to 201000 Hz,
with no more than 0.07% total harmonic distortion

INTEGRATED AMPLIFIER 30 watts per channel into 5 ohms

load impedance .............. 8 ohms
Total harmonic distortion

.................................. less than 0.07% at or below
- rated min, RMS power output
Frequency response (at 1 watt)
. .................................. 10 t 50,000 H
(Sllver & Black Model) .1 38, -2 «5

RIM curve deviation (PHONO, 30 Hz to 15 kHz)
........ +0.5 dB, -0.5 dB

Input sensit and impedance
ll kHz. for rated power output)
PHONO ........ x ............ 2.5 mV/47 kilohms
E ~ (Max. input capability; 120mV at 1 kHz, less than
a 01% total harmonic distortion)
TUNER, TAPE PLAYHH 150 mV/47 kilohms
4 Output level (1 kHz)
. TAPE REC ................... 130 mV into 47 kilohms
Signal to noise rat (short-circuit, Avnetwork)
w PHONO ......... ..
TUNER, TAPE
Power requirements
Power voltage ............. 120/220/240V (50/60 Hz)
For U.S.A. & Canada
.. 120V (60 Hz)
Power consumpti .. 120 watts 150 VA Rated
170 watts Maximum
( ) Dimensions H 430 mm (16-15I16')W
112 mm (4-7/16') H
CAUTION 230 mm (9-1/15') D
Weight ............................ 4.1 kg (9.0 lbs.) net
1. Parts identified by theAsymbol on the schematic 4.7M; (10.4 lbs.) packed
diagram and the parts list are critical for safety. _ M" d mm mm m (Mm mm mm m M
Use only replacement parts that have critical charac- . Mm"...
teristics recommended by the manufacturer. makcllfiizmmzEmE"" '"'""""'"°

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

Sans-11L
SANSUI ELECTRIC CO, LTD.

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CAUTION

1. The symbols, UL. CSA. SA, BS, UK, EU, AS, XX and
XX-V < EXPORT(V)> on the parts list and the schematic diagram
mean followings respectively.

UL ............................... Manufactured for U.S.A market.
(Underwriters Laboratories approved model.)

.. Manufactured for Canadian market.

.. Manufactured for South African market.

.. Manufactured for United Kingdom market.

CSA ..
SA .....
BS, UK.

EU . .. Manufactured for European market.

AS ..... .. Manufactured for Australian market.

XX ... Standard Version with Inner Voltage
Selector.

XX-V .... Standard Version with Outer Voltage
Selector.

NON MARK ............. Common Parts.

2. Some printed circuit boards are not supplied as the assembled.
To separate these in this service manual, the stock No's are not in-
dicated at the ends of the board names. However, the individual pans
on the circuit boards are provided by orders.

3. Since some of capacitors and resistors are omitted from pans lists
in this service manual, refer to the Common Parts List for capacitors
& resistors, which was issued on February 1963.

4. Abbreviations in this service manual are as follows.

OAbbreviations List

C.R. : Carbon Resistor E.B.L. : Low Leak Bl-Polar
S.R. : Solid Resistor Electrolytic Capacitor
Ce.R. : Cement Resistor Ta.C. : Tantalum Capacitor
MR. : Metal Film Resistor F.C. : Film Capacitor
ER. : Fusing Resistor M.P. : Metalized Paper Capacitor
N.l.R. : Non-lnflammable Resistor P.C. : Polystyrene Capacitor
A.R. 2 Array Resistor G.C. : Gimmic Capacitor
C.C. : Ceramic Capacitor A.C. : Array Capacitor
C.T. : Ceramic Capacitor. V.Rt : Variable Resistor
Temperature Compensation S.V.R. : Seml Varlable Resistor
EC. : Electrolytic Capacitor SW. : Swltoh
EL. 2 Low Leak Electrolytic Chip R. : Chlp Resistor
Capacitor Chip C. : Chip Capacitor
E.B. : Bi-Polar Electrolytic
Capacitor

Page 8

6. MAIN PARTS REPLACEMENT

A. Bonnet (See Fig. 6-1)

1) Remove two screws 9.

2) Pull the rear side of the bonnet to remove the hooks and then re
move bonnet,

Fig. 6-1
mm 'Innd
Bar-Mt
Hook 4 1]
®Cf @J El no!

Int Plan

B. Bottom Plate

1) Remote two screws 9 (Fig 6-1),

2) Pull the rear side of the bonnet to remove the hooks and then re-
move bottom plate.

7. PACKING LIST

C. Side Panel L (R) (See 4-2. Top View a Fig. 6-2)

1) Remove bonnet and bottom plate)

2) Push up hook ® 0! side panel assy and separete F-4778 board
from side panel assy.

3) Shift the position of the side panel L (R) )t5cm in the arrow direc-
tion @.

4) Remove the hooks Q) of the side panel from front panel and then
pull it the arrow direction ® to remove the side panel L (R).

Fig. 6.2

From Flu-I

8. ACCESSORY LIST

Parts No. Stock No. Description Stock No. Deucrlption
1 47859900 Vinyl Cover 46966300 Operating Instruction
2 47764600 Styrofoam Packing
3 47764200 Carton Case

(XX-UL-CSA-EU-BS-AS)
47764300 Carton Case
[XX-UL'CSA-EU-BS'AS)
47764400 Carton Case
(XX-V)
Carton Case
(XX-V)

47764500

'Note: XX-V Standard Version with Inner Voltage
Selector.
(V" mark is indicated on the canon case.)