Sony WM-10II User manual

WM- WIT:
US Model
Canadian Model
WM-30:
AEP Model
UK Model
E Model
I
SPECIFICATIONS
Tape track: 4-track 2*channel stereo
Fast winding lime: Approx, 2min, 30sec. with Sony cassette C-60
Frequency response (DOLBY NR OFF)
4Q- 1 5 ,000 Hz (Wiin the TAPE selector set to jjgjf,}
40-15,000 Hz (with the TAPE selector set to NORM)
er -output.; 5 sYiW + 5 mVI (max,]
5rnW+5mW (at 10% harmonic distortion) at do operation
Power requirements; 1.5V dc
Size AA battery (IEC designation R6)
External* bailer ea (used in the optional case EBP-10):
Size A A (IEC designation Rfi) >: 2
WM ion only
DC IN 1,5V jack accepts: Sony AC-D1 ac power adaptor (optional)
for use on 120V ac or Sony DCO70 car Cattery cord (optional)
for use with 12 V car battery.
WM-3Q only
DC IN 1.5V jack accepts:
Sony AC‘D1 ac power adaptor (optional)
available in the continental European countries for use on
220 V 3C, 50 Hz
available in the United Kingdom for use on 24*0 V ac, 50 Hz,,
available in other countries for use on 110, 120, 220,
240 V ac, 50/60 Hz
adjustable by Sony personnel.
Sony DCC-70 car battery cord (optional) for use with 12 V
car battery
Battery life (continuous playback hours):
Aoprox, 2.5 hours with Sony SUM^a (NS) New Super battery
Approx. 5 hours with supplied Sony Eueready AMS alkaline battery
For maximum performance we recommend the use of
alkaline battery.
Dimensions;
With Cassette inside
Approx 86* 111.4 * 22.4 mm (wlh)d) (S'/i * 4 1 /,, * inches)
incl. projecting pads and controls
Without cassette inside
Approx. 70* 110.8*21,3 mm (wrtVd) (2*/, * 4 % * w /n inches)
not incl. projecting pads and controls
Weight: Approx, ?90g (6,8ozJ Incl. battery, not incl. other accessories
STEREO CASSETTE PLAYER
SONY
TC

WM-1 011/30
SERVICING NOTE
Servi circuit has been changed for the sets with
serial number 77,001 and later.
Replacing chip components
All chip components should be connected and disconnect¬
ed, using a tapered soldering iron [temperature of the iron
lip; less than 2&0 C (Slh^F)], a pair of tweezers and braid-
ed wire.
Precautions for replacement
]. Do nol disconnect the chip component forcefully.
Otherwise, the pattern may peel off.
2. Never re use a disconnected chip component. Dispose of
all old chip components,
3. To protect I he chip component, heating time for attach¬
ing the component should be within 3 seconds.
c Removing chip components
[1) R emoving solder at electrode
Remove the solder at the electrode, using a thin
braided wire. Do not remove the solder of the part
(chip component) attached adjacent to the electrode.
(2) D i sconnecting chip components
Turn the tweezers with the soldering iron alternately
applied to both electrodes, and the chip component
will be disconnected. Take careful precautions while
disconnecting, because if the chip component is force¬
fully removed the land may peel off.
Never re-use a disconnected chip component.
(5) Smoothing the soldered surface
After disconnecting the chip component, remove the
solder by using a braided wire to smooth the land
Surface,
o Connecting chip components
The value of chip components is not displayed on the
main body. Take due precautions to avoid mixing new
chip components with other ones.
0) Applying solder to land on one side
Apply a thin layer of solder to the land on one side
where the chip component is to be connected. Too
much solder may cause bridging.
Smaft tfii&n tity at salder
(2) Speedy soldering
Hold the chip component at the desired position,
using tweezers, and apply the soldering iron in the
arrow-marked direction. To protect the chip compo¬
nent, heating time should be within 3 seconds.
(3) S peedy soldering of electrode on the other side
Solder the electrode on the other side in the same
way as in (2) above.
- 2 -

WM-10II 30
SECTION 1 1 ---
OUTLINE
11 MODEL IDENTIFICATION
US r Canadian model
SONY WM-ion
STEREO CASSETTE PLAYER
BATT SUPPLY: l.SVxl IEC R6
JtS SUM-3 SIZE A A MADE IN JAP AM
SOMY CORP
AEP, UK, E model
SONY WM 30
STEREO CASSETTE PLAYER
BATT SUPPLY; IEC R6
JIS SUM-3 SIZE AA MADE IN JAPAN
SONY CORP.
T2. PARTS IDENTIFICATION
O TAPE selector © DOLfiY NR switch © Headphones jack
Q VOL |volume) control © BATTERY Indicator © ^PLAY button
© BSTQP button. © *4 button © ►► bottom ® Cassette compartment
(ft DC IN 1 r 5V I external power input) jack Batter/ compartment
- 3 -

block
diagram

WM-10II 30
SECTION 2
DISASSEMBLY
Ncub: Fallow th-o disassembly procedure in the numerical order given.
I CASSETTE PANEL
I
LID, BATTERY CASE
tsd, battery case

to P 13 MOTOR BLOCK

F/R LEVER
LEO (040U
tention spring
headphone jack
screw
ASSEMBLING Q
WM-10II 30
HEADPHONE JACK
0 Unsolder LED (D401).
QP1.4* 6^
reel ornament {&!
f/r lever
CONTROL PLATE BLOCK
control Dime block
ASSEMBLING 0

0 button Cottar
button screw
(R£tV)
fPLA Yi
spring-
compression
BUTTON (PLAY, STOP, FF, REVYl REVERSE WHEEL BLOCK
v
.. ■ Stopper screw
T reverse wheel block
*4 /
REEL ORNAMENT A
battery terminal
0 unsolder /
0 reel ornament (A)
Iruo retainer

WM-10II/30
HEAD CHASSIS
Don + t use the old stopper washer again after
removing it.
O PJ-4 » 1-4
stopper washer
head
adjustment Screw
■ M 2 x 3
head
-ground
Ki-.f! '.ir
{HEAD WtmtiG)

Up to Serial No, 77,000
WM-1011/30
m Extend the Qt/Jierf
CfHTfflCt of reel
switch.
reel switch
(S90U
MOTOR CHASSIS
TAKE-UP REEL
Don't use the old stopper washer again after
removing it.
panel stopper shaft
take-up reef
QK1.4k2
motor chassis
o panel stopper shaft
&PJ.4x2 j
2 I /
— 13—

WM-10II 30
SECTION 3
ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-
alcohol-moistened swab:
playback head pinch roller
capstan rubber belts
2- Demagnetize the playback bead with a head
demagnetizen
3, Do not use a magnetized screwdriver for the
adjustments.
4. The adjustments should be performed with the
rated power supply voltage (1.3 V) unless other¬
wise noted.
3- 1. MECHANICAL ADJUSTMENTS
Pinch Roller Pressure Measurement
— Forward Mode —
1. Pull the spring scale in the direction shown by the
arrow.
2, Slowly return the pinch roller and read the spring
scale.
Specification:
ISO ± 20 g (4,6 - 6,0 oz)
Torque
mater
Meter reeding
FWD
OQ-102C
20 - 40 gem
(0.28 - 0,56 oz inchi
FF, REW
CQ-201B
More ".ban 60 g-em
(More than 0.83 oz-Lnch)
Back
Tension
CQ-102C
0 - 2,5 g-cm
(0 - 0,035 oz-inch)
Tape Pulling i
Force
CQ403
__1
More (ban 45 g em
(More than 0.6 2 oz-inch)
Thrust clearance
Adjustment Parts
1 Refer to exploded
views and parts li-st.l
Motor wheel
0.2mm
No, 304
Take-up reel
0-05 - 0.15mm
No, 308/340/346
Supply red
0.05 - 0.15mm
No. 308/324
Reverse wheel 0.05 - 0,15mm
No. 323/324/325
Torque Measurement
Perform with 2.SV DC power.
Thrust Clearance Adjustment

WM-10II/30
SECTION 3
ADJUSTMENTS
PRECAUTION
J. Clean the following parts with a denatured-
alcohol-moistened swab;
playback head pinch roller
capstan rubber belts
2. Demagnetize the playback head with a head
demagnet izer,
3. Do not use a magnetized screwdriver for the
adjustments,
4. The adjustments should be performed with the
rated power supply voltage (1.3V) unless other¬
wise noted.
3-1. MECHANICAL ADJUSTMENTS
Pinch Roller Pressure Measurement
— Forward Mode —
1, Pull the spring scale in the direction shown by the
arrow,
2, Slowly return the pinch roller and read the spring
scale.
Specification;
15O±20g(4.6-6.Ooz)
Torque Measurement
Perform with 2,5V DC power.
CCH01C
CQ-20 IB
Back
Tension
More than 45 g j cm
fMore [han 0,62 oi-ineb)
Tape Pulling
Force
CQ-403
Thrust Clearance Adjustment
Thrust clearance
Adjustment Parts
(fliJtsr to exploded
view* and pans littd
Motor Wheel 0.2 mm No, 304
Take-up reel
0,05 - 0.15 mm No, 3 OS/340/3 46
Supply reel 0,05 - 0.15mm No. 308/324
Reverse wheel 0.05 — 0.15mm
No. 323/324/325

(0 WM-1011/30
Dolby NR Level Adjustment
Setting:
TAPE switch: NORM
DOLBY NR switch: off
VOLUME control: minimum
test tap o
P-4-L300
(3 IS Hi, 0 m
P
J
Procedure:
Adjust RV101 (L-CH), RV20I (R-CH) to obtain
-27 r 7dB t IdB (0.028V to 0.036V) output level.
Adjustment Location: audio hoard
RV1QJ
RV2QT
1 /TVM
CD
...
16

WM-1 0 1 1 / 3 0
MEMO

WM-1011/30
• Semiconductor Lead Layouts
SECTION 4
DIAGRAMS
4-1. schematic diagram
Note:.
* AH capacitors are in l±F unless otherwise noted. pFr ^uF
50 WV or less are not indicated except for electrolytic*
and tantalums
* All resistors are In II and ] /*W or less unless otherwise
specified.
* O : s ^9 n a l path.
* 11 : B+ bus,
* L I : adjustment for repair.
* Total current is measured with no cassette installed,
* Power voltage is 1.5V and fad with regulated do power
supply from battery terminal.
Voltages ere dc with respect to ground in PLAY mode.
Voltage variations may be noted due to normal pro¬
duction tolerances
( ) • DOLBY NR ES302! ON
< > . FF/REW mode
* Waveforms are taken to ground in FWD mode by using
oscilloscope.
Voltage variations may be noted due to normal produc¬
tion tolerances.
* Switch
Ref, No, Switch
Position
5301
TAPE
NORM
S302
DOLBY NR
OFF
S303 1 PLAY
OFF
S3G3-2
4*/**(FF/REW} OFF
S901 Real
—
J401
Fiegdphones (switch) OFF
Mote: Vcltaps are measured with a VGM (SOkO/V).
-IS-

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