Notes On Schematic Diagram; Types Of Transistor And Led - Sharp CD-BK300W 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 pico-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
SW1 OPEN/CLOSE
SW2 CLAMP
SW3 DISC NUMBER
SW4 PICKUP IN
SW601 SPAN SELECTOR
SW701 ON/STAND-BY
SW702 CLOCK
SW703 TIMER
SW709 DISC 1
SW710 DISC 2
SW711 DISC 3
SW712 DISC SKIP
SW713 OPEN/CLOSE
SW714 DIMMER
SW715 X-BASS
SW716 EQUALIZER
FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
KTA1266 GR KTC3203 Y
KRC102 M KTC3199 GR
KRC104 M KRA107 M
KTA1271 Y KRC107 M
KTA1274 Y KTC3194 Y
2SC1845 F 2SA1015 GR
KTA1273 Y

NOTES ON SCHEMATIC DIAGRAM

POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
9 kHz/50 kHz
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF

TYPES OF TRANSISTOR AND LED

• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis 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
SW717 REVERSE MODE
SW722 CD
SW723 TAPE
SW724 TUNING/DOWN
SW725 MEMORY SET
SW726 FAST REWIND
SW727 FAST FORWARD
SW728 PLAY
SW729 STOP
SW730 REVESE PLAY
SW731 REC/PAUSE
SW732 TUNING/UP
SW733 VIDEO
SW734 TUNER
SW801 VOLTAGE SELECTOR
FRONT
VIEW
B C E
KTC2026
– 39 –
CD-BK300W
" ( ) are important for
DESCRIPTION
FRONT
VIEW
4204SRT7
4204UYT7
4204UGT7
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
230-240 V