Sansui TU X501 Service Manual

Page 1

SERVICE MANUAL

SANSUI

TU-X501
TU-X50lL

DIGITAL SYNTHESIZER TUNER

CAUTION

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

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

the customer.

'SPECIFICATIONS

FM Section

.. 87.5 to 108 MHz

Y
Mono IHF ................. 10.8 dBl (0.95 l4V/75ll)
50 dB quieling sensitivity
Mono., 16.0 (le
Stereo. ,. 36.0 dBf

86 dB
.80 dB

less than 0.05% at 1,000 Hz

Stereo. 55 than 0.06% at 1,000 HZ
Alternate channel select (at 400 kHz)

WIDE ..... 50 dB

NARROW 75 dB

50 dB at 1,000 Hz
.. 20 to 15,000 Hz
+0.5 (18,705 dB
Antenna input impedance
.................................. 75 ohms unbalanced

AM (MW) Section
Tuning range
Usable sensit y
Signal to noise ra
Image response rat

Stereo separation ,
Frequency response.

530 to 1,600 kHz
48 dB/m (251 uV/m)
50 dB (80 dB/m)
.. 45 dB al 1000 kHz

LW Section
Tuning range. 153 to 281 kHz
Usable sensitiv 60 dB/m dl 2l0 kHz

Others
Output voltage and impedance
0.775 V
Power requirement lZO/2ZO/24OV
50/60 Hz

For U.S.A and Canada
..l20V(6O HZ)
i0 Watts
448 mm l'l7-11/16")W
80 mm (373/16)H
292 mm (ll-1/2)D
Weight ............................ 3.5 kg (7.7 lbs) net
4.8 kg (10.6 lbs) packed

Power
Dimensions ...........

- Design and specificalinns ,ubim to changes without notice [or im-
provements.

- Due in local laws and regulations, mi; unit sold in some areas are not
equipped with variable mirage selectors

Page 2

T 1/X501L

NOTE

1. The symbols, UL, CSA, SA. BS, UK, EU, AS, SEV, SS and 4. Abbreviations in this service manual are as follows.
XX < EXPORT> onwthe parts list and the schematic dia- _ . Abbreviations List
gram mean followmgs respectively. on. : Carbon Resistor
UL ...................... Manufactured for U.S.A market. S.R. : Solid Resistor
(Underwriters Laboratories approved Ce.Fl. _ : Cement Resistor
model.) M.R. : Metal Film Resistor
CSA . Manufactured for Canadian market. F-R- = Fusing WSW.

NJ.R. : Non-inflammable Resistor
A.R. : Array Resistor
0.0. : Ceramic Capacitor

Manufactured for South African market.
. Manufactured for United Kingdom

market. . .
EU... . Manufactured for European market. CT' ' g::£:£:::c"°" Temperature
AS Manufactured for Australian market. E.c. . Elecuolwc Capacimr
SEV. Manufactured for Swiss market. E.L. ; Low Leak Electrolytic Capacitor
SS... . Manufactured for Saudi Arabia market. EB, : Bi-Polar Electrolytic Capacitor
XX .. Standard Version. E.B.L. :Low Leak Bi-Poiar Electrolytic
NON MARK ........ Common Parts. Capacitor

Tao. : Tantalum Capacitor

F.c. : Film Capacitor

M.P, : Metalized Paper Capacitor
P.C. : Polystyrene Capacitor

2. Some printed circuit boards are not supplied assembled.
To separate these in this service manual, the stock num-

bers are not indicated for these boards. However, stock ac. : Gimmic Capacitor
numbers for indivtdual parts are Indicated. A.c. : Army Capacitor
V.R. : Variable Resistor
3. Since some capacitors and resistors are omitted from parts ' SAL. ; Semi Vanable Resisw,
lists in this service manual. refer to the Common Parts List sw. : Switch
for capacitors and resistors, which was issued on June Chip R. : Chip Resistor
1987. Chip C. : Chip Capacitor

1. PACKING LIST 2. ACCESSORY LIST

Parts No. Stock No. Description Stock No. Description
1 27306700 thvl Bag 48730700 Antenna Plug
2 27394i00 Styrofoam Packing 46051700 FM Antenna
3 27493800 TU-X50i Carton Case 46548700 AM Loop Antenna
27493700 TU-X501 L Carton Case 38103300 PJP Cord

49029000 TU-XSOi/X501L Operating in»
stiuciion l E-F-S)

49029100 TU-XEOHXSOiL Operating lnr
struction (G~l-Sw)

*Note
E-F-S: English-French and Spanish Version
6-l-Sw: Germanoltalian and Swedish Version