Sony Walkman WM-EX511 User Manual

3-3. OPENING OF MAIN BOARD
@ Screw (M1.4)
@ Screw (M1.4x2.0) Screw (M1.7x4)
@ Screw (M1.4x2.0)
Remove the solder.
(Battery terminal board
(+) assembly)
—~@ Open the main board
@ Flexible board (Magnetic head)
Remove the solder.
(Terminal board)
3-4. BELT
Belt
Cc
in the arrow direction.
SECTION
4
SECTION
5.
ADJUSTMENTS
DIAGRAMS
4-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-
moistened swab :
playback head rubber belts
capstan idlers
pinch roller
. Demagnetize the playback head with a head demagnetizer.
Do not use a magnetized screwdriver for the adjustments.
After the adjustments, apply suitable locking compound to
the parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage (1.3V) unless otherwise noted.
Rw
Torque Measurement
EWD 21— 38 g*cm
(0.29 — 0.53 oz « inch)
CQ102C
FWD 0.5 —3 g°*cm
Back Tension (0.01 — 0.04 oz ¢ inch)
21 — 38 g*cm
REV
PREV CQ102RC (0.29 — 0.53 oz « inch)
0
F
EW
REV 5—3g°*cm
Back Tension (0.01 — 0.04 oz « inch)
CQ201B
Tape Pulling Force Measurement
Meter Reading
more than 60 g * cm
(more than 0.84 oz » inch)
more than 35 g
(more than 1.23 oz)
5-1. BLOCK DIAGRAM
4-2. ELECTRICAL ADJUSTMENTS
10301
EQ AMP, EX BBB, PW OUTPUT AMP
PRECAUTION
1. Power supply voltage : 1.3V. pi nvanek
2. Switch position HEAD _
DOLBY
NR
switch
:
OFF
Len
=
&
sy
EX
DBB
switch
:
NORM
J.
7
|
=
a
_—
Test
Tape
Ron
—=
|
(3)
>
Type
|
‘Signal
o—
——S
SS
* a
Len —~ & _
J301
'
!
! i
H
o| 4 | | REMOTE
0 1
t
ON ° i Q
§ $304 H
H
WS-48A 3 kHz, 0 dB Tape Speed Adjustment
FeV
wey
TAPE
SPEED
ADJUSTMENT
Ren
V
REF
5
ators
hn
NS
MUTE
Procedure
:
test
NORM
<—
MID
—<—~MAX
=
WS-48A
frequency
8303
F
(3
kHz,
0
dB)
18Q
counter
EX
OBB
:
PHONE
JACK
1.
Play
back
WS-48A
(tape
center
portion)
in
FWD
mode.
Adjust
the
RV601
so
that
the
frequency
counter
reads
3,000
Ww
+
30
Hz.
j
1701
2.
Play
back
WS-48A
(tape
center
portion)
in
REV
mode.
a
ae
Confirm
that the
reading
of
frequency
counter
is
within
2.5%
from
the
reading
in
step
1.
ls]
e708
so
|
YR
®
.
.
$710
$709
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Adjustment
Parts
Location
diagram
:
[=
|
BATT
LED
MAIN BOARD (SIDE B)
ry
§703
HOLO
aah.
IC701 Former type only.
5704
MODE) [BL_SKIP'
© ON
Pi,
res
ANS
:
|
1
foun:
[enol
\
RV601
I
rh
>
* Signal path,
Vaan
>> ‘PB Baal 10601 1.54 BRY BATTERY
. SIZE “AA™
QEC BESIGNATION Ré)
Q302, 303 a IP. 1.5V
10301 .
ui pc IN 1.5V
5 e oe}
09
T501
is)
1c301
CAMMIUM
# BATTERY
—~8— | —9— —10—
WM-EX511/EX618

Sony Walkman WM-EX511 Specifications

General

Brand	Sony
Model	Walkman WM-EX511
Category	Cassette Player
Language	English