Sansui D 900 WR Service Manual

Page 1

_ -__,_,_-__-

lSERVICE MANUAL

II

SANSUI

slam mean: neat D-soowR um: I»: sumo-m

D-QOOWR 5 D

STEREO CASSETTE DECK l m H @1er LLLLHJ imam

mac:

GM}

CAUTION

1. Parts identified by the Asymbol 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

1. The symbols Type A and Type B on the block diagram, pans list 3. Some printed circuit boards are not supplied assembled.

and the schematic diagram mean followings respectively. Type A
has the SYSTEM CONTROL jack on the rear panel. Type B dose
not have the SYSTEM CONTROL jack on the rear panel.

To separate these in this service manual, the stock numbers are
not indicated for these boards. However, stock numbers for
individual parts are indicated.

2. The symbols UL, CSA, EU, SEV. SS and XX on the 4. Since some capacitors and resistors are omitted from parts lists
parts list and the schematic diagram mean followings respectively. in this service manual, refer to the Common Parts List for
UL ___________________ Manufactured for USA. market. capacitors and resistors. which was issued on June 1987.
(Underwriters Laboratories approved model.) _ _ _ . _
CSA ................... Manufactured for Canadian market. 5- AbbreVlatlons m "5 serVIce manual are as follows.
EU ..................... Manufactured for European market. Abbreviations List
(Except Swiss market.) _
SEV ................... Manufactured for Swiss market. F-R- 3 Fusing Reststor S-V-R- 3 Semi Variable
SS ..................... Manufactured for Saudi Arabian market. 00. 3 Ceramic Capacitor ReSiSIOI'
XX ..................... Standard Version. P.C. : polystyrene SW- 3 SWitCh
, Capacitor Chip 0. : Chip Capacitor
NON MARK ....... Common Parts. V.R. :Variable Resistor
Specflwaflons ' -
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............... ........... 0.2% max (WRMS) 127 mml5')H
Fast forwarding (rewm mg time ....... Approx. 170 sec. 232 mm l9-3/16')D
(for C-GO tape) Weight .................................................... 3.8 kg (8.4 lbs) net

Frequency response 4.7 kg (10.4 lbs) packed

Normal tape (LH) ................................ 70 to 13.000 Hz :3 dB

Signal-to-noise ratio ' Design and specifications subject to changes without notice for
DOLBY NR ON ................................... Better than 60 dB improvements.

Input sensitivity ' Due to local laws and regulations, this unit sold In some areas are
LINE IN (REC) ..................................... 100 mV not equipped Wih Variabl' "399 hams-

) Power requirements ____________________________ 120/2204) V ' Dolby noise reduction manufactured under license trom Dolby
a; 50/60 Hz Laboratories Llcenslng Corporation.

For U.S.A. and Canada ....................... 120 v (60 H2) "DOLBY", "° °b"'° me' (DU) 3" "a" "'3' °' °°"V

European ............................................ 220 v (50 Hz) mam L'°°"s'"9 °°"°""°"'