Notes On Schematic Diagram; Types Of Transistor And Led - Sharp CD-BK260V Service Manual

CD-BK260V/CD-BK2700V/CD-BK280V
• 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/SLEEP
SW704 KARAOKE MODE
SW705 P.B.C
SW706 OSD
SW707 DIGEST
SW712 DISC SKIP
SW713 OPEN/CLOSE
SW714 DIMMER
SW715 X-BASS/DEMO
SW716 EQUALIZER
(S) (G) (D)
(1) (2) (3)
KTA1266 GR
KRC102 M
KRC104 M
KRC102 S
KRC104 S
KTA1271 Y
KTA1274 Y
2SC1845 F

NOTES ON SCHEMATIC DIAGRAM

POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
9/50 Hz—10/100 Hz
ON—OFF
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

FRONT
VIEW
E C B
KTA1273 Y
KTC3203 Y
KTC3199 GR
KRA107 M
KRC107 M
KTC3194 Y
• 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 " 1 " (
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
SW717 VOLUME UP
SW718 VOLUME DOWN
SW719 REVERSE MODE
SW720 CD
SW721 TAPE
SW722 TUNING DOWN
SW723 MEMORY/SET
SW724 FAST REWIND
SW725 FAST FORWARD
SW726 PLAY
SW727 STOP
SW728 REVERSE PLAY
SW729 REC/PAUSE
SW730 TUNING UP
SW731 VIDEO/AUX
SW732 TUNER (BAND)
SW801 VOLTAGE SELECTOR
3
TOP
VIEW
2
1
KTA1504 GR
KTC3265 Y
KTC3875 GR
– 18 –
) are important for
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
ON—OFF
ON—OFF
110 V—127 V—
220 V—230-240 V
FRONT
VIEW
SLR342VCJ1