Sony MX-P21 - Page 18

MX-P21 MX-P21
4.3, SCHEMATIC DIAGRAM (1)
@® DC-DC Converter Board
e H I J oA B Cc
| MX-P21
ICI
MB3759
CONTROL
1
= aK ~ a
ay sor 5 SANIT shi
2SD1049. 2SC278 2SAll 23 )SEC 2SA1012
a6
INVERTER
°
——
DRIVER
eros
CHOPPER
|
2
28C2334
_
Ut
BV
p=P
RIPPLE
FILTER
b
02
RD7.5EB Ve
7.3V, 15H 150uH r4y Ql poo
1) QQ
SF.
C10 Cy,
i ot 0047/50
C -l-+
3
HE
|
se
ge
aa = 25V “b
a : lf
Dele Tandab
CH : SINS
Ty ,
4
nas
ESAB85-009
FLYWHEEL
(0 POWER TRANSFORMER a \ {
BHIELD. ' ' OY tv
5 03 04 a
-| 38ySEC
a
sh
ee
as
dake
1B3
AB pSEC
_ . 38ySEC
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TO
METER
&
PS
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a
at
iad
zee
SLE
Ly
L
fa
BOARD ; are
(INPUT
)
6
-15.3V
oan
PSY
35
Q7 Q8 D8 en s:) D3,4
28C2334 2SAl0i2 \neere ESAC31-02DN 1S1588
RIPPLE FILTER—— RECT RECT
|
| 7
Note:
e All capacitors are in uF unless otherwise noted. pF : uuF
D
ESAB85-009
RD5.6EB3
ERB44-02
SOWV
or
less
are
not
indicated
except
for
electrolytics
RD7.5EB3 8 and tantalums.
182348H
cathode '
th Ky cathode
2 3 nal tq |
a Ss
1
| anode mi 9
1 3
?
10 +26=
e All resistors are in ohms, %W unless otherwise noted.
kQ : 10002, MQ : 1000k2
© fw} : nonflammable resistor.
e ([.__] : adjustment for repair.
e@ Readings are taken under no-signal conditions with a
VOM (50 kQ/V).
e * :(US)...... Serial No. up to 820100
(Canadian). . . Serial No. up to 730000
(UK)... 2... Serial No. up to 660000
e** > (US) ...... Serial No. 820101 and later
(Canadian). . . Serial No, 730001 and later
(AEP) ..... All
(OK) oxen k Be Serial No, 660001 and later
16.5V QV O07
VOLTAGE
Ll
2.2mH
16.6V
INPUT
\ 23y SEC
VA AMEN a
23uSEC
JUL
Note: The components identified by shading and mar
A are critical for safety. Replace only with
ified
Note: Les composants identifies par un trame et une
marque /\sont critiques pour la sécurite. Ne les
remplacer que par une piece portant le numero
specifie.
Note: Voltages are measured with a VOM (50k22/V).