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
VIEW
1
RN2404
RNC1407
RNC1404
RN1406
FRONT
VIEW
SLR325MG
R342VRC7
R342MGF7

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