Sharp MD-S301MK, Service Manual, Page: 18 / 28

MD-S301MK
– 18 –
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to electro-
lytic capacitor, the expression “capacitance/withstand volt-
age” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
• The wiring diagram and the PWB drawing may be changed
to refect improvements in the design without prior notice.
They may differ a little the unit you have.
Figure 18 TYPES OF TRANSISTOR AND LED
POSITION
REF. NO
DESCRIPTION
SW401 HOLD OFF—ON
SW451 PLAY/FF OFF—ON
SW452 REW OFF—ON
SW453 STOP OFF—ON
SW454 VOLUME DOWN OFF—ON
SW455 VOLUME UP OFF—ON
SW901 DISC IN OFF—ON
CL200HRC
1SS372
015Z5.1Y
RB521S30
HZU2BLL 2SD1950 2SA17457
2SA1745
2SC4738 GR
2SJ305
DTC144 EE
NDS355 AN
NDS335 N
TOP
VIEW
TOP VIEW
TOP VIEW
RB491D
SB10015C
TOP VIEW
TOP VIEW
TOP VIEW
FRONT
VIEW
B
(G)
(3)
E
(S)
1
C
(D)
(2)
1SS361
1SS393
TOP VIEW
F1J2F
B E C