Notes On Schematic Diagram; Type Of Transistor And Led - Sharp MD-X8 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 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.
REF. NO DESCRIPTION
SW701 POWER
SW702 MD > MD EDIT
SW702A PICKUP IN
SW703 TRACK
SW704 CD > MD EDIT
SW705 MD RECORD
SW706 MD EJECT
SW707 COMPUTER NETWORK
SW721 DISPLAY
SW722 TIMER/DELETE
SW723 NAME/TOC EDIT
SW724 MESSAGE
SW725 TUNING/CURSOR DOWN
SW726 TUNING/CURSOR UP
SW727 AUX
SW728 TUNER (BAND)
SW729 CD DISC 1 OPEN/CLOSE
SW730 CD DISC 2 OPEN/CLOSE
SW731 CD DISC 3 OPEN/CLOSE
SW771 ENTER
SW772 CD PLAY/PAUSE
SW773 CD STOP
SW774 CD DISC 1 PLAY
3
TOP
2
VIEW
1
RN2404
RNC1407
RNC1404
RN1406
FRONT
VIEW
SLR325MG
R342VRC7
R342MGF7
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NOTES ON SCHEMATIC DIAGRAM

POSITION
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
B
(G)
C
TOP
(D)
VIEW
E
(S)
2SA1162 G
2SC2412 KR
2SK2909
2SA562 Y
2SC1740 SR
2SC380 O
2SD468 C
DTC363 TS
KRA107 M
KRC107 M
FRONT
KTA1266 GR
VIEW KTC3199 GR
KTC3203 Y
B C E
2SA1314 C
Figure 31 TYPES OF TRANSISTOR AND LED
– 31 –
• 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 "
" (
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
SW775 CD DISC 2 PLAY
SW776 CD DISC 3 PLAY
SW781 MULTI CONTROL DOWN
SW782 MULTI CONTROL RIGHT
SW783 MULTI CONTROL LEFT
SW784 MULTI CONTROL UP
SW785 EQUALIZER
SW786 X-BASS
SW787 3D SURROUND
SW788 MD STOP
SW789 MD PLAY/PAUSE
SW901 RESET
SW1952A/B WRITE PRO/DIRECT
SW1953 LEAD IN
SW1954 MD PLAY
SW1955 MD RECORD
SW1956 LOADING
SWB101, 102 CAM 1, 2
SWB103, 104 CAM 3, 4
SWB105 CD EJECT
SWB106 CD TRAY CLOSE
SWB107 CD IN
SWB108 CD SET
FRONT FRONT
VIEW VIEW
E C B B C E
(S) (G) (D) (D) (G) (S)
(1) (2) (3) (3) (2) (1)
2SD2012
FRONT
VIEW
G D S
2SK1473
MD-X8
) are important for maintaining
POSITION
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
FRONT
VIEW
E C B
2SB1238 R