Service manual

– 31 –
MD-MX30/MX30W
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 electrolytic capacitor, the expression
“capacitance/withstand voltage” 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.
• 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.
Figure 31 TYPES OF TRANSISTOR/DIODE AND LED
TYPE OF TRANSISTOR AND LED
REF.NO. DESCRIPTION POSITION
SW2 PICKUP-IN OFF
SW4 OPEN/CLOSE OFF
SW900 VOLTAGE SELECTOR 127V
SW1930 WRITE PRO OFF
SW1931 DISC MEDIA OFF
SW1932 LOADING OFF
SW1933 RECORD OFF
SW1934 PLAYBACK OFF
SW1936 LEAD IN OFF
SWD01 MULTI JOG OFF
SWD02 VOLUME OFF
SWD03 MEMORY/ENTER OFF
SWD04 TUNING UP OFF
SWD05 MD PLAY OFF
SWD06 MD STOP OFF
SWD07 TUNING OFF
SWD08 TIMER/DELETE OFF
REF.NO. DESCRIPTION POSITION
SWD09 NAME/TOC EDIT OFF
SWD10 ON/STAND-BY OFF
SWD11 DISPLAY(DEMO) OFF
SWD12 REC OFF
SWD13 CD MD EDIT,NORMAL OFF
SWD14 CD MD EDIT,HIGH OFF
SWD15 CD EJECT OFF
SWD16 CD STOP OFF
SWD17 CD PLAY OFF
SWD18 MD EJECT OFF
SWD20 VOLUME SELECT OFF
SWD21 AUX OFF
SWD22 TIMER(BAND) OFF
SWD23 X-BASS OFF
SWD24 EQUALIZER OFF
SWD25 SURROUND OFF
SWU01 SPAN SELECTOR 50/9
E
(S)
(1)
C
(G)
(2)
B
(D)
(3)
B
(3)
E
(1)
C
(2)
FRONT
VIEW
FRONT
VIEW
FRONT
VIEW
FRONT
VIEW
KTA1266 GR
KTA1268 GR
KTA1270 Y
KTC3200 GR
2SB562 C
2SC380 O
2SK246 GR
E
(S)
(1)
C
(G)
(2)
B
(D)
(3)
KRA107 M
KRC102 M
KRC104 M
KRC107 M
KTC3199 GR
ECB
KTA1023 Y
1N4004S
2A02M
1SS133
TOP
VIEW
FRONT
VIEW
B C E
2SA1314 C
TOP VIEW
SB00703Q
FRONT VIEW
SVC348S
2SA1162 G
2SD601 AR
UN2113
UN2213
UN2214
UN221N
SLI342UCBLNG901CF
TS4B03G
AC AC
VIEW
FRONT
SBE803
2SA1242 Y
TOP VIEW
543
21
1:Cathode
2:Cathode
3:Anode
4:No Contact
5:Anode
FRONT
VIEW
B
C
E