Sansui D 750 WR Service Manual

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\SERVICE MANUAL

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SANSUI

D-750WR

STEREO CASSETTE DECK

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CAUTION
1. Parts identified by the !

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.

NOTICE

l. The symbols UL, CSA, SS and XX on the parts list 4. Abbreviations in this service manual are as follows:
and the schematic diagram mean followings respectively. .
UL ......... Manufactured for U.S.A. market. AbbreVIatIons' LISt
(Underwriters Laboratories approved model.) C.R. : Carbon Resistor E.B.L.: Low Leak Bi-Polar
CSA ........ Manufactured for Canadian market. S.R. : Solid Resistor Electrolytic
SS ......... Manufactured for Saudi Arabian market. Ce.R. : Cement Resistor Capacitor
XX ......... Standard Version. M.R. : Metal Film Resistor Ta.C. : Tantalum Capacitor
F.R. : Fusing Resistor F.C. : Film Capacitor
N. l. R.: Non-lnflammable M.P. : Metalized Paper
NON MARK . Common Parts. Resistor Capacitor
A.R. : Array Resistor P.C. : Polystyrene Capacitor
CC. 2 Ceramic Capacitor M.M.C.: Metalized Mylar
2. Some printed circuit boards are not supplied assembled. To CT. 2 Ceramic Capacitor, Capacitor
separate these in this service manual, the part numbers are not Temperature A.C. : Array Capacitor
indicated for these boards. However, part numbers for individual Compensation V.R. : Variable Resistor
parts are indicated. EC. 2 Electrolytic Capacitor S.V.R.: Semi-Variable Resistor
E.L. : Low Leak Electrolytic SW. : Switch
Capacitor S.C. : Styrol Capacitor
3. Since some capacitors and resistors are omitted from parts lists in E.B. : Bi-Polar Electrolytic
this service manual, refer to the Common Parts List for capacitors Capacitor
and resistors, which was issued on lune1987.
SpeCIfIcatIons
Track format ................. 4-track/2-channel system Power consumption ............. 15 watts
Tape speed ..... .-' ............ 4.75 cm/sec. Dimensions .................. 430 mm (16-15/16) W
Wow/flutter .................. 0.15% max. (WRMS) I34 mm (5-3/4) H
Fast forwarding (rewinding) time ..... Approx. 170 sec. 215 mm (8-1/2") D
(for C-60 tape) Weight ..................... 4 kgs (8.8 lbs) net
Frequency response
Normal tape (LH) ............ 125 to 12,500Hza4d3
Signal-to-noise ratio 0 Design and specifications subject to changes without notice for
DOLBY NR ON ............. Better than 50dB improvements.
Input sensitivity 0 Due to local laws and regulations, this unit sold in some areas are
LINE IN (REC) ............. 100 mV not equipped with variable voltage selectors.
Power requirements ............. l20/220-240V I Dolby noise reduction manufactured under license from Dolby
(50/60 Hz) Laboratories Licensing Corporation.
For U.S.A. and Canada ......... 120V (60 Hz) DOLBY", the double-D symbol (DC) are trade marks of Dolby
European ................. 220/240V (50 Hz) Laboratories Licensing Corporation.

Asia .................... 120/230V (50/60 Hz)

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D-750WR

3. PARTS LOCATION ON BOARD

3-1. Main Board

Component Sid;I

(3
7)
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