Service manual

MD-R3
– 33 –
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
(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.
Figure 33 TYPES OF TRANSISTOR AND LED
REF. NO DESCRIPTION
POSITION
SW501 RESET ON—OFF
SW702 PICKUP IN ON—OFF
SW901 JOG ON—OFF
SW950 POWER ON—OFF
SW951 MD-PLAY ON—OFF
SW952 MD-STOP ON—OFF
SW953 MD-REC ON—OFF
SW954 CUE ON—OFF
SW955 MD-EJECT ON—OFF
SW956 ENTER ON—OFF
SW957 NAME ON—OFF
SW958 TIMER ON—OFF
SW959 DISP ON—OFF
SW960 REVIEW ON—OFF
SW961 AUX ON—OFF
SW962 UND ON—OFF
SW980 CD-PLAY ON—OFF
SW981 CD-STOP ON—OFF
SW982 DISC 1 ON—OFF
SW983 DISC 2 ON—OFF
• 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 “ ” ( ) 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.
REF. NO DESCRIPTION
POSITION
SW984 DISC 3 ON—OFF
SW985 DISC 1 OPEN/CLOSE ON—OFF
SW986 DISC 2 OPEN/CLOSE ON—OFF
SW987 DISC 3 OPEN/CLOSE ON—OFF
SW988 START ON—OFF
SW989 TOC • EDIT ON—OFF
SW1952 DIRECT ON—OFF
SW1953 LEAD IN ON—OFF
SW1954 PLAY ON—OFF
SW1955 REC ON—OFF
SW1956 LOADING ON—OFF
SWB101 CAM 1 ON—OFF
SWB102 CAM 2 ON—OFF
SWB103 CAM 3 ON—OFF
SWB104 CAM 4 ON—OFF
SWB105 CD EJECT ON—OFF
SWB106 CD TRAY CLOSE ON—OFF
SWB107 CD IN ON—OFF
SWB108 CD SET ON—OFF
SB0209CP
1SS372
SLR325MG
FRONT
VIEW
FRONT
VIEW
FRONT
VIEW
FRONT
VIEW
TOP VIEW
FRONT
VIEW
2SK1473
DA118
SB0209 CP
E C B
(S)(G)(D)
(1)(2)(3)
G D S
B C E
2SA1314 C
KRC107 M
KTA1266 GR
2SA1015 GR
2SB562 C
2SC2878 B
2SD468 C
E C B
B
(G)
(3)
E
(S)
(1)
C
(D)
(2)
TOP VIEW
TOP
VIEW
2SD2394 F
KRA102 S
KRC102 S
KTC3875 GR
2SK2909
RN2404
RNC1404
TOP VIEW
ISS372
RNC1407
RN1406
2SA1162G
2SC2412KR
KRA103 S