Download Print this page

Sony WM-BF49 Service Manual page 7

Advertisement

3-2,
MIN
=
MAX
3. 3k
10
=|
17
12,
RI14
47k
R214
47k
Cit
2208 4V
L OUT
LORCIONE
(4/2)
POWER
AMP
C110
10002
RV301
l
VOLUME
RIV1 15k
th
"4
jaa
LIN,
R112
100
C109 330p
RV301-1
10K
Qo
xo
>
a
R212
100
tt
RV301-2
10K
C308 100p
C307
2200
74
0. 0068 #
RIPPLE
FILTER
CXA1249M
C602
D. 0228
Q301
2SC1623L5L6
0. 068
«
MEGA
BASS
V
Ea
OFF —»
ON
IC601
MOTOR DRIVE
R601
820
13
CNS
A SY
SS Se
ee Ge
Oe
ee
ee
wy ee
14
15
cas: |
1
$306
FUNCTION
TAPE | —» [RADIO]
:
(RADIO OFF)
|
:
a
J302
PHONES
—s
7
O
SMC)
d
af
1
tT
i]
'
,
I
&
'
-
O
Sree
en
ey
By ar
a e
x
a
'
ty
t
t
} ©
M601
aa
er
J304
[DC
IN 3V}
C603
108
/16
IC601
SCHEMATIC DIAGRAM
|
|
[,.
4
L2
L3
L4
1
(MA
IN
BOARD]
se
ee
es al
FM
RF
FM
OSC
AM
OSC
ee
Saneus
|
MODE
.
BAND
cvi
| MONO| «—
$302-1
ake
[AM] <—
|
:
|
5
| sca
[ea [cs ca
|
RERZOR |\ e2e| 29 op
E
| we _| Sp [27 | 30p] 130)
*s ue
3 | FE
a
|
a08
}
WG
MODEL
——
C7 O.47p
0.95
areff ark
|
FM/AM
FRONT
END
IF AMP, DET
g
|
2
a C4)
:
,
TAPE/RADIO SWITCH
|
Et
;
C16
ootes
|
prea lark
|
eaih
ie
ot
~
aie
©
R301
4.7
|
Te
1/2)
Q101, 201
PRE
AMP
°
EQ SWITCH
a
METAL/CrO8: 2.2
108
[(DBB UNIT]
al
ee
Eo
o n e
Se
'Leh
—™
:
8 '.
-
a é
1206
&/ss
38
=
:
O
O
PB MEAD
7
a
U
0
|
.
Reh
—_
>» |
-
'
.
HP301-2
| |
i
:!
pepe
'
'
LOW
i
=
aoe
;
8
8
|
'
|
jaa
4
$302-2
|
.
TAPE
i? y
y |
$303-2
gp
|Cr02/
CJ
l
$302-2
$303-2
:
.
;
:
e
IC BLOCK
DIAGRAMS
bakkie:
;
F
e
Voltages are taken with a VOM (input impedance 10 MQ).
e
.
or
Saas esau vere
Siar otherwise noted. pF: HBF
Voltage variations may be noted due to normal produc-
1c301
LA4570M
50
or
less are not indicated except for electrolytics
tion tolerances.
and tantalums:
@
Signal path.
|
e
All
resistors
are
in 2 and
!/,W or less unless
otherwise
">
:FM
SD
:PB
ecified.
;
-
@
Switch
e
Q
: internal component.
© -Ge} : printed resistor.
| RefNo. |
Switch
|
Position
e
Total current is measured with no cassette installed.
TC
POWER
OFF
e@
Power voltage is dc 3 V and fed with regurated dc power
MODE
FM
ST
supply from external power voltage jack.
TAPE
NORMAL
®
Voltage and waveforms are dc with respect to ground
'DOLBY
NR
ON
under no-signal (detuned) conditions.
no mark:
PB, FM
(
): AM
e
Ea:
B+
Line
AN6650
Bier
aa
DRY BATTERY
SIZE "AA*
(EC DESIGNATION R6)
2Pcs , 3V
TOTAL
CURRENT
TAPE
FWD:
90mA
FF:
@5mA
5mA
REW:
RADIO
FM: 25mA
AM: 18mA

Advertisement

loading