Sony wm 805 service manual

Page 1

WM-805

SERVICE MANUAL

E Model

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SPECIFICATIONS

Frequency response (DOLBY NR OFF)
With the earphones: 20-18000 Hz
With the wireless receiver: 30-15000 Hz
(wrth TAPE set to CrOz/METAL or set to NORM)
(EIAJ')
Output Headphones lack (stereo miniiack)
Load impedance 3-3009
Power output Headphones: S mW+5mW at DC operation (EIAJ 169)
Wireless receiver: 4 mw+4 mW at DC operation (EIAJ
169)
Power reqUirements
Wireless receiver
1.2 V DC Rechargeable battery
Cassette player

Model Name Using Similar

T e
Mechanism New yp

Tape Transport Mechanism Type MF-WM80547

Battery lite (EIAJ) (hours)
Cassette player Receiver
Connected Wireless Wireless
with

Sony alkaline battery

AM3 (N) Approx. 4 Approx, 3.5 -

Rechargeable NCfiWM

tull charged Approx. 2.5 Approx. 2 --

Rechargeable NC-SWM
fully charged with Sony Approx. 6.5 Approx. 5.5 -
alkaline battery

Rechargeable NCAWM __ _ Approx. 10

iulty charged

For maximum periorniance we recommend the use of alkaline
batteries.

Dimensions Approx. 106.5 x 76.8 x 25.8 mm (th/d) excl. projecting
parts and controls
Approx. 108.1 x 78.3 x 29.1 mm (w/hld) incl, projecting
parts and controls (EIAJ)
Weight Cassette palyer
Approx. 185 g inct rechargeable battery. excl, other
accessories
Wireless receiver
Approx 50 9 incl rechargeable battery, excl. other
accessories

Accessories supplied (See lllustialion I.)
Battery case (1), Rechargeable battery NC-6WM(1)/NC-4WM(1),
Battery charger (1), Sony alkaline battery AM3 (N) (1). Wireless
receiver (open-air type, 1), Carrying case (1). Receiver clip (1), Ear
adaptor (2) It the wireless receiver do not lit your ears, attach the
ear adaptors.

Design and specilications subject to change without notice.
(EIAJ) Electric industries Association at Japan

Note

0 It a car battery cord or an AC power adaptor
not manufactured by Sony is used. a tuse
must be installed in the battery cord or
the AC power adaptor and the polarity of the

Plug must be as illustrated. M

CASSETTE PLAYER
SONY;

Page 2

WM-805

TABLE OF CONTENTS SERVICING NOTE
Section Title Page This set detects reel rotation by PH401 (photo sensor).
- - Reel rotation cannot be detected when the system control
Specifications ,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 board is removed, because PH401 is mounted on the
Servicing Note ____________________________ Z system control board. As a result, the auto-off circuit and
SECTION 1. GENERAL tape end detection will misoperate. And, up and down of
1-1. Location of Controls .............. 3 head and power supply of playback circuit cannot operate
SECTlONZ. MECHANICAL ADJUSTMENTS ______ 4 when the system control board is removed, because 5304
SECTION 3. ELECTRICAL ADJUSTMENTS ....... 4 (HEAD switch) is mountedon the system control board.(5304
SECTION 4. DIAGRAMS is linked to on and off of the plunger solenoid.)
4-1. 10 Block Diagram ................... 5 Therefore, operation check of the mechanism deck and
4_2. Semiconductor Lead Layouts ......... 6 voltage check can be performed by the method shown
4-3. Printed Wiring Boards 81°
(Audio Section) ................... 7
4-4. Schematic Diagram (Audio Section) -- 11 mm m"
4-5. Printed Wiring Boards 1) Apply the square wave signal to the PH401.
(Transmitter Section) --------- 15 2) Press the » or » key.
4-6. Schematic Diagram
(Transmitter Section) --------- l7 PLAY mode
SECTION 5. EXPLODED VIEWS --------------- 19
SECTION 6. ELECTRICAL PARTS LIST ........ 23 1) Apply the square wave signal to the PH401.
2) Press the V key
3) Turn on S304 a few seconds later.
-MAIN Board (side A) - -MAIN Board (side B) -

SQUARE WAVE
OSCI LLATEOR

20H:
OdB (1V)