Notes On Schematic Diagram; Resistor; Capacitor - Sharp MD-R3 Service Manual

• 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
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
REF. NO DESCRIPTION
SW501 RESET
SW702 PICKUP IN
SW901 JOG
SW950 POWER
SW951 MD-PLAY
SW952 MD-STOP
SW953 MD-REC
SW954 CUE
SW955 MD-EJECT
SW956 ENTER
SW957 NAME
SW958 TIMER
SW959 DISP
SW960 REVIEW
SW961 AUX
SW962 UND
SW980 CD-PLAY
SW981 CD-STOP
SW982 DISC 1
SW983 DISC 2
FRONT
VIEW
E C B
(S)(G)(D)
(1)(2)(3)
KRC107 M
KTA1266 GR
2SA1015 GR
2SB562 C
2SC2878 B
2SD468 C
FRONT
VIEW
G D S
2SK1473

NOTES ON SCHEMATIC DIAGRAM

POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
FRONT
VIEW
B
(G)
(3)
E
(S)
E C B
(1)
KRA102 S
2SD2394 F
KRC102 S
KTC3875 GR
2SK2909
RN2404
RNC1404
FRONT
VIEW
B C E
2SA1314 C
Figure 33 TYPES OF TRANSISTOR AND LED
– 33 –
• The indicated voltage in each section is the one measured by
Digital Multimeter between such a section and the chassis
with no signal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with " " (
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
REF. NO DESCRIPTION
SW984 DISC 3
SW985 DISC 1 OPEN/CLOSE
SW986 DISC 2 OPEN/CLOSE
SW987 DISC 3 OPEN/CLOSE
SW988 START
SW989 TOC • EDIT
SW1952 DIRECT
SW1953 LEAD IN
SW1954 PLAY
SW1955 REC
SW1956 LOADING
SWB101 CAM 1
SWB102 CAM 2
SWB103 CAM 3
SWB104 CAM 4
SWB105 CD EJECT
SWB106 CD TRAY CLOSE
SWB107 CD IN
SWB108 CD SET
TOP VIEW
C
TOP
(D)
VIEW
(2)
RNC1407
DA118
SB0209 CP
RN1406
2SA1162G
2SC2412KR
KRA103 S
TOP VIEW
FRONT
VIEW
SLR325MG SB0209CP
1SS372
MD-R3
) are important for
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
TOP VIEW
ISS372