Sony BM-147 Service Manual

MICROFILM
SPECIFICATIONS
Playback system 4 track 4 channel monaural
Fast winding time Approx. 2 min. 20 sec. with Sony
cassette C-90 at 2.4 cm/sec.
Approx. 4 min. 40 sec. with Sony
cassette C-90 at 1.2 cm/sec.
Frequency response 250-7000 Hz (2.4 cm/sec.)
250-4000 Hz (1.2 cm/sec.)
Speaker Approx. 7 cm (27/g inches)
Power output 400 mW (at 10% harmonic distortion)
Output Earphone jack (minijack)
for 8-ohm earphone
Power requirements 120V AC, 60 Hz
Power consumption 200 mA
Dimensions Approx. 224 x 68 x 232 mm (w/h/d)
(87/3 x 23/4 x 9'/4 inches)
incl. projecting parts and controls
Weight Approx. 2.5 kg (5 Ib 9 02)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
US Model
Canadian Model
Tape Transport Mechanism Type | MB-147-57
FEATURES
e Four channel transcriber for use with the BM-146 Sony
court confer-corder.
e Selectable recorded tape speed: 1.2 or 2.4 cm/sec.
¢ Four digit tape counter compatible with Sony court
confer-corder for locating recorded materials.
e Full remote control transcription by using the optional
foot control unit.
e The tape speed and tone in playback mode can be con-
trolled to keep pace with your transcribing speed.
e The REVERSE TIME contro! enables you to repeat a few
words of dictated material as often as you like.
e All mode shut-off mechanism activates at the end of the
tape in any operating mode.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MARQUE /\ SUR LES DIAGRAMMES SCHE-
MATIQUES ET LA LISTE DES PIECES SONT CRITIQUES
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACER CES COMPOSANTS QUE PAR DES PIECES
SONY DONT LES NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY.
TRANSCRIBER
SONY.
TC 2 @
beg aes