Sony WM-11D User manual

® WM-11D
US Model
© WM-23
_ AEP Model
~ E Model
STEED GRAEBETIE PLA
PHOTO: US model ;
SPECIFICATIONS | _ PARTS IDENTIFICATION
@ <4 FF (fast forward) button @ me REW (rewind) button
© <4 PLAY (playback) button @ STOP/EJECT button @ Battery
indicator @ TAPE selector @ PHONES (headphones) jack
© VOL (volume) contro! @ DC IN 3V (external power input) jack
Tape track: 4-track 2-channel stereo
Fast winding time: Approx. 2 min. with Sony cassette CHF-60
Frequency response
40-15,000 Hz (with the TAPE selector set to METAL/CrO,)
40- 15,000 Hz (with the TAPE selector set to NORM) aa y.@ aeeotleccompariment:@ battery compariment
Power output eae .
20 mW + 20 mW (at 10% harmonic distortion) at dc operation
Power requirements: 3 V dc
two size AA batteries (IEC designation R6)
External batteries (used in the optional EBP-500 battery case): two
size D batteries, (IEC designation R 20)
DC IN 3 V jack accepts: 1 ;
optional Sony AC-39 ac power adaptor for use on 120 V ac, 60 Hz,
optional Sony DCC-70 car battery cord for use on 12 V car battery
Battery life (continuous playback hours):
Approx. 3 hours with Eveready No. 1215 Heavy Duty batteries
Approx. 5 hours with Eveready No. E91 Alkaline batteries
For maximum performance we recommend the use of alkaline
batteries. | :
Dimensions: Approx. 132 x 84.7 x 31.4 mm (wihid) -
| (54, x 3%, x 14, inches)
not incl. projecting parts and controls
Weight:
Approx. 230 g (8.2 0z) not inci. batteries and other accessories
Approx. 270 g (9.6 02} incl. batteries, not incl. other accessories
Tape Transport Mechanism Type MT-WM23-06
STEREO CASSETTE-PLAYER
ot
SONY,
1 TC

SERVICING NOTE —
Repairing printed resistor
P gP rs printed resistor
Cut both sides of the resistor and solder the carbon
resistor having same value in place of printed one on
the conductor side.
A A A A A A A A A A A A A A AN A A A A A A A A a AN a A A A A A A A A A A A RN A A AR A A A a :
Replacing chip components | -._. (3) Smoothing the soldered surface
| All chip components should be connected and disconnect-. ts After disconnecting the chip component, remove the
ed, using a laperee soldering iron [temperature of the iron. solder by using a braided wire to smooth the land
tip: less than 280° C (536° F)], a pair of tweezers and braid- _* surface. |
ed wire. | “ee ot 2 Connecting chip components
Precautions for replacement | . .° ee The value of chip components is not displayed on fhe
main body. Take due precautions to avoid mixing new
- "chip components with other ones.
1. Do not disconnect the chip component forcefully.
Otherwise, the pattern may peel off.
2. Never re-use a disconnected chip component. Dispose of - qa) Applying solder to land on one side
all old chip components, Apply a thin layer of solder to the land on one side
3. To protect the chip component, heating time for attach- ss where the chip component is to be connected. Too
ing the component should be within 3seconds. = =———_— much solder may cause bridging.
© Removing chip components oo f2%, * Small quantity of solder
(1) Removing solder at electrode | | ee
Remove the solder at the electrode, using athin =—> i a .
braided wire. Do not remove the solder of the part
(chip component) attached adjacent to the electrode.
(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.
Soldering iron
Soldering iron
(2) Disconnecting chip components mie | UN nS pene
Turn the tweezers with the soldering iron ditetaately os | ae re
applied to both electrodes, and the chip component (3) Speedy soldering of electrode on the other side
will be disconnected. Take careful precautions while Solder the electrode on the other side in the same
disconnecting, because if the chip component is force- way as in (2) above. |
fully removed the land may peel off.
Never re-use a disconnected chip component.
Tweezers —

——
WM-11D/23
SECTION 1
DISASSEMBLY
REAR CABINET REMOVAL
@ screw 1.7x 8
rear cabinet
@ Remove the battery lid.
@ screw
screw
+B
2x18
#B2x
18
[
((—k
U
Q strap spacer
@ strap spacer

WM-11D/23
CASSETTE LID REMOVAL
cassette lid
Remove the toggle arm from
the cassette lid. |
(Rear side; Battery Compartment)
Slide the cassette shaft in the
Pull
the
cassette
shaft
direction
of
the
arrow.
in the direction of the
arrow.
cassette shaft
MECHANISM BLOCK REMOVAL
AUDIO BOARD REMOVAL

Le Bees tf ae Poe” S wea ee . 5 2. ee we ath PWNS aha wee 3° Soe Bota. 2s ae
SECTION 2
7 7 ADJUSTMENTS
2-1. MECHANICAL ADJUSTMENTS AND |
MEASUREMENT
-WM-11D/23. WM-11D/23_
2-2. ELECTRICAL ADJUSTMENTS
Playback Head Azimuth Adjustment Tape Speed Adjustment
PRECAUTION power supply voltage :3Vdc
7
SPEED
CONTROL
knob
:
center
click
Procedure:
|
Procedure:
Clean
the
following
parts
with
a
denatured-
|
1.
Mode:
playback
alcohol-moistened
swab:
Torque
Measurement
Mode: playback
| speed checker
LFM-30
rubber belts
>) ae VTVM digital frequency
‘ ef gecm z 6.3 kHz, -10dB test tape . counter
ren
aoe
0.3-0.72oz~inen)
|
SON
|
WS-48A
|
Demagnetize
the
playback
head
with
a
head
Fast
Forward
50
—75g°cm
(3
kHz,
OdB)
CQ-201B
demagnetizer.
|
and
Rewind
(0.69
—
1.0
ozeinch)
,
|
1.5
—4.5
g¢cm
re
not
use
a
magnetized
screwdriver
for
the
ae
ener
CQ-102B
en
SEAMS
adjustments.
,
,
|
HEADPHONES
After
the
adjustments,
apply
suitable
locking
|
:
iis
i
2.
Turn
the
adjustment
screw
for
the
maximum
compound
to
the
parts
adjusted.
Tape
Tension
Measurement
|
J
|
output
levels.
If
these
levels
do
not
match,
turn
The
adjustments
should
be
performed
with
the
|
Meter
|
Meter
Reading
the
adjustment
screw
where
both
of
output
rated
power
supply
voltage
unless
otherwise
CQ-403
More
than
110g
(3.88
0z)
noted.
Specification:
levels match together within 1 dB.
Speed checker Digital frequency counter —
L-CH Frequency difference between the beginning
peak and the end of the tape should be within 1%
Head Height Adjustment (30 Hz).
1.
Prepare
an
adjustment
cassette
as
shown
below.
Rees
Location:
R-CH
Screw peak RV601
position adjustable resistor
L-CH R-CH |
peak peak
>
3. Phase Check
Mode: playback
C-90
test
tape
tape
cassette
Cut
out
hatched
P-4-A063
|
oscilloscope
portions.
(6.3 kHz,
-10 dB)
—
L-CH
322
2. In record mode and viewing from the front,
adjust the head heights to eliminate tape curl
and tape twist at arrowed portions.
HEADPHONES Adjustment Location:
| Screen pattern
in phase 45° 90° 135° 180°
—__—_y————_ 7
good wrong
Sees heey 4. After the adjustment, lock the screws with Head Azimuth adjustment screw
Shim, head height adjustment locking compound.

a a:
_
«
WM-11D/23.
WM-11D/23
SECTION
3
DIAGRAMS
1
ee:
3
4
2)
6
7
__
8
|
)
__10
1
12
13
14
15
3-1.
MOUNTING
DIAGRAM
|
@ Semiconductor Lead Layouts
[AUD BOARD)
BA3304F
BA5208AF
(CHASSIS)
me
p
HP9OI 1 8
Ut PB HEAD
— LA5523
WHT RED
= : ,
\_/
(GRY)
S301
[INPUT
|
PUT
|
TAPE
N
124945
|
GL-9PR22
, METAL
Cr02
cathode
MoO!
MOTOR
J30I
|
PHONES
|
a
e
|
RED
OUTPUT
|
BLK ©
Note:
@ Color code of sleeving over the end of the jacket.
(GROUNDED WITH SHIELD SHEET)
RED
(REDNIGR
UO |
U
:
:
DRY
BATTERY
:
«SIZE
“AA”
(IEC
DESIGNATION
R6)
|
2PCS.3V
!
@
O—
:
parts
extracted
from
the
component
side.
CN301
@
e—
:
parts
extracted
from
the
conductor
side.
DC
IN
3V
oo
|
©
ZZ
:
Printed
resistor
,
:
1m
;
©
ae
pe
-
signal
path
e-—
REW
:140mA
|
@-@-O
TOTAL
CURRENT
ee
(a
CH
sigiakpath
©
em=sseeem>
-
R-CH
signal
path
!
e
“2
:
B+
pattern
|
®
:
component-side
pattern.
(Printed
Jumper)
%
ae

1 _2 3 4
3-2. SCHEMATIC DIAGRAM |
IC301 BA3304F
[AUD BOARD] eo cee
HP9OI-| —= kb
PR227-3602J
PB HEAD
L-CH
HP9OI-2 -— {> |
PR227-3602U
PB HEAD
R-CH
Note:
_ @ All capacitors are in uF unless otherwise noted. pF: wuF
S5OWV or less are not indicated except for electrolytics
and tantalums. .
e All resistors are in $2 and 1/,W or less unless otherwise
specified.
e n> : signal path.
e@ fw : Printed resistor
ar : ClO5
50V 0.047 ne -1.25V
<<. MWA PAW ay >
RI09 + ‘ a
270
C106
x
530|-| 820p —©
lq «(TAPE ee caer
METAL RV30I~| we
, VOLUME 47
a
re C205
50V goa ReoB N.25V,
aoe PW a
e + -
R209 C206
S30I-2 270 820p
< |
lk ME TAL [SV
Cr02
Reads
n RV30I-2 620
|
[NORM] +] C207
VOLUME 47 C404
|
25V
0.001
Le C601 LAS523 Baas ;
MOTOR CONTROL moun ere en
VY $302
+ TH602 R602 , R301
C602
180 150
POWER
a i | ] 3900PPM | Bok fi .
By
PO
sues
[4
R302 :
ete 030! Y) E 820 0.001
(5)
21Vo
{2.15V)
: B+ bus.
@ Power voltage is 3 V and fed with DC IN 3 V jack from
voltage regulator. .
Voltages are dc with respect to ground in stop mode.
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark: PLAY
( ) : REW
< St FE
| WM-11D/23
WM-11D/23
IC302 BAS208AF
POWER AMP
CURRENT
PLAY:145mA
REW :140mA
FF :130mA
RV60I |
|Ok
rie
TH6O! pe
dk 12k
4000%
@
14 15
| J 30!
DRY BATTERY
w= SIZE“AA”
(IEC DESIGNATION R6)
2 PCS. 3V
M9OI .
DNR-6900A
MOTOR

SECTION 4
EXPLODED VIEWS AND PARTS LIST
WM-11D/23
WM-11D/23
NOTE:
- The mechanical parts with no reference
number in the exploded views are not
supplied.
* Items marked " *" are not stocked since
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
(1)
- The construction parts of an assembled
part are indicated with a collation
number in the remark column.
No. Part No. Description
1 3-318-202-01 SCREW (1.4X3), TAPPING
2 3-318-203-21 SCREW (1.7X8), TAPPING
3 3-318-204-31 SCREW (M1.7X6), TAPPING
4 3-318-209-01 TERMINAL BOARD, PLUS
5 3-318-210-01 SPRING
6 3-318-215-01 SPRING
7 3-321-022-01 LEVER, EJECT
8 3-319-013-01 BUTTON, PLAY
9 3-319-014-01 BUTTON, FF
10 3-319-015-01 BUTTON, REW
11 3-320-907-01 SCREW (+P2X201ZZ), TAPPING
12 3-320-901-01 SHAFT, CASSETTE
13. 3-321-001-01 KNOB, CONTROL
14 =3-321-002-01 SPRING
15 y¥-3321-014-1 (AEP,£;RED)...LID, BATTERY CASE
15 = x¥.-.3321-014-2 (AEP,E;BLUE)..LID, BATTERY CASE
15) “(Xe992 T0145. CUS) mores ces LID, BATTERY CASE
15 =X~3321-014-4 (AEP,E;WHITE).LID, BATTERY CASE
16 3-321-006-01 BUTTON, STOP
17 = 3-321-076-01 CABINET (FRONT)
REMARKS No.
Part No.
18 3-545-657-21
19 3-703-357-06
20 =. 33-- 703-502- 41
21 7-623-612-01
22 7-685-106-14
23. -9-911-863-XX
24 = X-3321-055-1
24 = X-3321-011-3
24 = X- 3321-012-3
24 = X-3321-013-3
25 = X-3321-051-1
25 = X-3327-303-1
25 = X-3327-302-1
Description
BUSH
PIN, PARALLEL (DIA. 1.6X14)
SCREW
EYELET, 1.5X4
SCREW +P 2X10 TYPE2 NON-SLIT
PLATE, BLIND
WS) coco soudet CABINET (REAR) ASSY
(AEP .E:RED)....CABINET (REAR) ASSY
(AEP ,E;BLUE)...CABINET (REAR) ASSY
(AEP ,E;WHITE)..CABINET (REAR) ASSY
(US)....LID ASSY, CASSETTE
(AEP ,E;RED)..... LID ASSY, CASSETTE
(AEP ,E;BLUE)....LID ASSY, CASSETTE
(
25 X=-3327-301-1 ,(AEP,E;WHITE)...LID ASSY, CASSETTE
26 =. 3- 321-041-001
27 =—3- 320-9 18-01
28 = 3-320-919-01
29 = 3-703-708-01
30 3-318-204-91
901 *A-3070-129-A
— 1 1 ——
SCREW +PWH 1.7X3.5
SPACER, STRAP
SCREW +B 2X18
STICKER, SONY SYMBOL
SCREW (M1.7X4). TAPPING
MOUNTED PCB, AU
REMARKS
(2)
- No. Part No.
301 3-319-014-11
302 3-319-015-11
303 3-321-006-01
304 3-319-013-11
305 3-565-927-00
306 *3-318-267-01
307 X-3318-222-1
308 3-318-287-01
309 7-627-552-07
310 3-318-238-01
311 3-318-252-01
312 3-570-615-00
313 3-318-309-01
314 3-578-138-01
— 3-578-138-11
Description
BUTTON, FF
BUTTON, REW
BUTTON, STOP
BUTTON, PLAY
SPRING, TENSION
LEVER, CR
CHASSIS ASSY, HEAD
GUIDE, TAPE
SCREW, PRECISION +P 1.7X2.5
SPRING, TENSION
ARM, DETECTION
POLY-WASHER (DIA.1.2)
SPACER, HEAD
SEAM (t=0.1)
SEAM (t=0.2)
REMARKS No
315
316
317
318
319
320
321
322
323
324
325
326
eo
Part No.
3-318-237-01
7-688-001-01
3-318-240-01
7-623-505-01
3-318-269-01
A-3110-010-A
3-318-275-01
3-318-254-01
*3-318-310-01
7-627-552-67
3-318-242-00
3-308-472-21
3-308-472-31
Description
REMARKS
SPRING, COMPRESSION
W 2, SMALL
SCREW (1.4), SPECIAL
LUG, 2
SPRING
PINCH LEVER ASSY
SPRING
CUSHION, MOTOR
COLLAR, MOTOR
SCREW, PRECISION +P 1.7X4.5
BELT
WASHER (C
WASHER (C
)(t=0.075)
)(t=0.125)

(3)
353
354
355
356
357
358
359
360
361
WM-11D/23
Part No.
3-827-323-11
3-318-324-01
X-3318-210-1.
X-3318-207-1
3-578-265-11
3-701-437-11
X-3318-211-1
X-3318-202-1
3-570-615-00
Description REMARKS | No.
362
363
WASHER (DIA. 3.1) 366
BUSHING, IDLER LEVER 364
LEVER ASSY, FWD IDLER 365
GEAR (A) ASSY, FR 367
WASHER, STOPPER 368
WASHER (t=0.25) 369
FLYWHEEL ASSY 370
CLUTCH. ASSY 371
POLY-WASHER (DIA.1.2) 372
373
ae 1 3—
Part No.
3-318-265-01
X-3318-204-1
3-318-288-01
3-701-437-21
X-3318-208-1
3-318-243-01
3-321-024-01
3-306-836-02
3-318-241-01
3-318-236-01
3-701-437-01
3-831-441-XX
Description
REMARKS
GEAR (B), FR
GEAR ASSY, REW
ARM, FF
WASHER (t=0.5)
LEVER ASSY, FR
SPRING, TENSION
SPRING, COMPRESSION
CAP, REEL, T
SPRING, COMPRESSION
WASHER, POLY, SLIT
WASHER (t=0.13)
CUSHION

WM-11D/23
(4)
No. Part No.
401 X-3327-304-1
402 = *3-318-290-01
403 3-318-246-01
404 3-318-292-04
405 3-318-277-01
406 3-318-251-01
407 3-318-291-01
408 3-318-250-01
409 3-318-276-01
410 3-321-007-01
411 3-318-300-01
412 3-318-296-01
413 7-624-101-01
414 = *3-318-293-01
415 3-547-669-00
416 3-318-248-01
417 3-318-351-01
Description REMARKS
CHASSIS ASSY, MECHANICAL
LEVER, PLAY |
SPRING, TENSION
LEVER, REW
SPRING, REW
SPRING, TENSION
LEVER, FR
SPRING, TENSION
SPRING
PLATE, LOCK
LEVER, SWITCH
LEVER, SHUT-OFF
RING, RETAINING E-1.2
LEVER, STOP
SPRING, TENSION
SPRING, TENSION
SPRING, TENSION
— 14—