Sony WM-51 Service Manual

MICROFILM
PHOTO : white type
SPECIFICATIONS
Tape track
4 track 2 channel stereo
Fast winding time
Approx. 3 min. with Sony C-60 cassette
Frequency response
40-15,000 Hz (with the TAPE selector set to CrO,/METAL)
40-15,000 Hz (with the TAPE selector set to NORM)
Power output
4mW+4 mW at DC operation (at 10% harmonic
distortion)
Power requirements
1.5V DC
R6 (size AA) battery
Rechargeable battery
DC IN 1.5V jack accepts:
Sony AC-D1M AC power adaptor (optional)
for use on 220V AC, 50Hz
Sony EBP-10 battery case (optional)
for use with two R6 (size AA) batteries
Sony OCC-70 car battery cord (optional)
for use with 12 V car battery
Battery life {hours)
Tape playback
Sony SUM-3(NS) Approx. 2.5
Sony alkaline AM3 Approx. 7.5
Sony rechargeable battery
NC-5WM (fully charged)
For rnaximum performance we recommend the use of
alkaline battery.
Approx. 2.5
Dimensions
Approx. 90.5 x 108 x23 mm (w/h/d)
(3% 4% %, inches)
not incl. projecting parts and controls
Approx. 91.5 108 x31.5mm (w/hi/d)
(3%,x4%x1¥, inches)
incl. projecting parts and controls
Weight
Approx. 220 g (7.8 02) incl. battery
not incl. other accessories
Accessories supplied
Carrying pouch (1)
Ear adaptor (2)
Oe
CC?
Rubber sheet (2)
AEP Model
UK Model
E Model
REVISED
Discard WM-51
SERVICE MANUAL
7
previously issued.
@ There are five color types in this model,
that is White, Pink, Green, Red and Gray.
[Tape Transport Mechanism Type MT-WM51-01
Only for AEP and UK model
Rechargeable battery (1)
Battery charger (1)
Only for E model
Sony alkaline battery AM3 (1)
Note: if an AC power adaptor or a car battery cord not manu-
factured by Sony is used, a fuse must be installed in the
AC power adaptor or the car battery cord and the polarity
of the plug must be as illustrated.
TABLE OF CONTENTS
Specifications... 0... 0.2... eee ee ]
Servicing Note ......... 2.00002 eee 2
SECTION 1 GENERAL: 20.3023 eee dd Sg ates 4
SECTION 2 DISASSEMBLY ................... 7
SECTION 3 ADJUSTMENTS...............-.-. 9
SECTION 4 DIAGRAMS
4-1. Mounting Diagram — Former type —...... 12
4-2. Schematic Diagram ............-.-5- 17
4-3. Mounting Diagram — New type—........ 19
SECTION 5 EXPLODED VIEWS AND
PARTS: LIST: 5 224i ca dees 23
SECTION 6 ELECTRICAL PARTS LIST..........
STEREO CASSETTE PLAYER
TC